Greg Thelen [Sat, 6 Apr 2019 01:39:18 +0000 (18:39 -0700)]
mm: writeback: use exact memcg dirty counts
commit
0b3d6e6f2dd0a7b697b1aa8c167265908940624b upstream.
Since commit
a983b5ebee57 ("mm: memcontrol: fix excessive complexity in
memory.stat reporting") memcg dirty and writeback counters are managed
as:
1) per-memcg per-cpu values in range of [-32..32]
2) per-memcg atomic counter
When a per-cpu counter cannot fit in [-32..32] it's flushed to the
atomic. Stat readers only check the atomic. Thus readers such as
balance_dirty_pages() may see a nontrivial error margin: 32 pages per
cpu.
Assuming 100 cpus:
4k x86 page_size: 13 MiB error per memcg
64k ppc page_size: 200 MiB error per memcg
Considering that dirty+writeback are used together for some decisions the
errors double.
This inaccuracy can lead to undeserved oom kills. One nasty case is
when all per-cpu counters hold positive values offsetting an atomic
negative value (i.e. per_cpu[*]=32, atomic=n_cpu*-32).
balance_dirty_pages() only consults the atomic and does not consider
throttling the next n_cpu*32 dirty pages. If the file_lru is in the
13..200 MiB range then there's absolutely no dirty throttling, which
burdens vmscan with only dirty+writeback pages thus resorting to oom
kill.
It could be argued that tiny containers are not supported, but it's more
subtle. It's the amount the space available for file lru that matters.
If a container has memory.max-200MiB of non reclaimable memory, then it
will also suffer such oom kills on a 100 cpu machine.
The following test reliably ooms without this patch. This patch avoids
oom kills.
$ cat test
mount -t cgroup2 none /dev/cgroup
cd /dev/cgroup
echo +io +memory > cgroup.subtree_control
mkdir test
cd test
echo 10M > memory.max
(echo $BASHPID > cgroup.procs && exec /memcg-writeback-stress /foo)
(echo $BASHPID > cgroup.procs && exec dd if=/dev/zero of=/foo bs=2M count=100)
$ cat memcg-writeback-stress.c
/*
* Dirty pages from all but one cpu.
* Clean pages from the non dirtying cpu.
* This is to stress per cpu counter imbalance.
* On a 100 cpu machine:
* - per memcg per cpu dirty count is 32 pages for each of 99 cpus
* - per memcg atomic is -99*32 pages
* - thus the complete dirty limit: sum of all counters 0
* - balance_dirty_pages() only sees atomic count -99*32 pages, which
* it max()s to 0.
* - So a workload can dirty -99*32 pages before balance_dirty_pages()
* cares.
*/
#define _GNU_SOURCE
#include <err.h>
#include <fcntl.h>
#include <sched.h>
#include <stdlib.h>
#include <stdio.h>
#include <sys/stat.h>
#include <sys/sysinfo.h>
#include <sys/types.h>
#include <unistd.h>
static char *buf;
static int bufSize;
static void set_affinity(int cpu)
{
cpu_set_t affinity;
CPU_ZERO(&affinity);
CPU_SET(cpu, &affinity);
if (sched_setaffinity(0, sizeof(affinity), &affinity))
err(1, "sched_setaffinity");
}
static void dirty_on(int output_fd, int cpu)
{
int i, wrote;
set_affinity(cpu);
for (i = 0; i < 32; i++) {
for (wrote = 0; wrote < bufSize; ) {
int ret = write(output_fd, buf+wrote, bufSize-wrote);
if (ret == -1)
err(1, "write");
wrote += ret;
}
}
}
int main(int argc, char **argv)
{
int cpu, flush_cpu = 1, output_fd;
const char *output;
if (argc != 2)
errx(1, "usage: output_file");
output = argv[1];
bufSize = getpagesize();
buf = malloc(getpagesize());
if (buf == NULL)
errx(1, "malloc failed");
output_fd = open(output, O_CREAT|O_RDWR);
if (output_fd == -1)
err(1, "open(%s)", output);
for (cpu = 0; cpu < get_nprocs(); cpu++) {
if (cpu != flush_cpu)
dirty_on(output_fd, cpu);
}
set_affinity(flush_cpu);
if (fsync(output_fd))
err(1, "fsync(%s)", output);
if (close(output_fd))
err(1, "close(%s)", output);
free(buf);
}
Make balance_dirty_pages() and wb_over_bg_thresh() work harder to
collect exact per memcg counters. This avoids the aforementioned oom
kills.
This does not affect the overhead of memory.stat, which still reads the
single atomic counter.
Why not use percpu_counter? memcg already handles cpus going offline, so
no need for that overhead from percpu_counter. And the percpu_counter
spinlocks are more heavyweight than is required.
It probably also makes sense to use exact dirty and writeback counters
in memcg oom reports. But that is saved for later.
Link: http://lkml.kernel.org/r/20190329174609.164344-1-gthelen@google.com
Signed-off-by: Greg Thelen <gthelen@google.com>
Reviewed-by: Roman Gushchin <guro@fb.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: <stable@vger.kernel.org> [4.16+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Arnd Bergmann [Sat, 6 Apr 2019 01:38:53 +0000 (18:38 -0700)]
include/linux/bitrev.h: fix constant bitrev
commit
6147e136ff5071609b54f18982dea87706288e21 upstream.
clang points out with hundreds of warnings that the bitrev macros have a
problem with constant input:
drivers/hwmon/sht15.c:187:11: error: variable '__x' is uninitialized when used within its own initialization
[-Werror,-Wuninitialized]
u8 crc = bitrev8(data->val_status & 0x0F);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitrev.h:102:21: note: expanded from macro 'bitrev8'
__constant_bitrev8(__x) : \
~~~~~~~~~~~~~~~~~~~^~~~
include/linux/bitrev.h:67:11: note: expanded from macro '__constant_bitrev8'
u8 __x = x; \
~~~ ^
Both the bitrev and the __constant_bitrev macros use an internal
variable named __x, which goes horribly wrong when passing one to the
other.
The obvious fix is to rename one of the variables, so this adds an extra
'_'.
It seems we got away with this because
- there are only a few drivers using bitrev macros
- usually there are no constant arguments to those
- when they are constant, they tend to be either 0 or (unsigned)-1
(drivers/isdn/i4l/isdnhdlc.o, drivers/iio/amplifiers/ad8366.c) and
give the correct result by pure chance.
In fact, the only driver that I could find that gets different results
with this is drivers/net/wan/slic_ds26522.c, which in turn is a driver
for fairly rare hardware (adding the maintainer to Cc for testing).
Link: http://lkml.kernel.org/r/20190322140503.123580-1-arnd@arndb.de
Fixes:
556d2f055bf6 ("ARM: 8187/1: add CONFIG_HAVE_ARCH_BITREVERSE to support rbit instruction")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: Zhao Qiang <qiang.zhao@nxp.com>
Cc: Yalin Wang <yalin.wang@sonymobile.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David Rientjes [Tue, 19 Mar 2019 22:19:56 +0000 (15:19 -0700)]
kvm: svm: fix potential get_num_contig_pages overflow
commit
ede885ecb2cdf8a8dd5367702e3d964ec846a2d5 upstream.
get_num_contig_pages() could potentially overflow int so make its type
consistent with its usage.
Reported-by: Cfir Cohen <cfir@google.com>
Cc: stable@vger.kernel.org
Signed-off-by: David Rientjes <rientjes@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Dave Airlie [Fri, 5 Apr 2019 03:17:13 +0000 (13:17 +1000)]
drm/udl: add a release method and delay modeset teardown
commit
9b39b013037fbfa8d4b999345d9e904d8a336fc2 upstream.
If we unplug a udl device, the usb callback with deinit the
mode_config struct, however userspace will still have an open
file descriptor and a framebuffer on that device. When userspace
closes the fd, we'll oops because it'll try and look stuff up
in the object idr which we've destroyed.
This punts destroying the mode objects until release time instead.
Cc: stable@vger.kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190405031715.5959-2-airlied@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Yan Zhao [Wed, 27 Mar 2019 04:54:51 +0000 (00:54 -0400)]
drm/i915/gvt: do not deliver a workload if its creation fails
commit
dade58ed5af6365ac50ff4259c2a0bf31219e285 upstream.
in workload creation routine, if any failure occurs, do not queue this
workload for delivery. if this failure is fatal, enter into failsafe
mode.
Fixes:
6d76303553ba ("drm/i915/gvt: Move common vGPU workload creation into scheduler.c")
Cc: stable@vger.kernel.org #4.19+
Cc: zhenyuw@linux.intel.com
Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andrei Vagin [Mon, 8 Apr 2019 04:15:42 +0000 (21:15 -0700)]
alarmtimer: Return correct remaining time
commit
07d7e12091f4ab869cc6a4bb276399057e73b0b3 upstream.
To calculate a remaining time, it's required to subtract the current time
from the expiration time. In alarm_timer_remaining() the arguments of
ktime_sub are swapped.
Fixes:
d653d8457c76 ("alarmtimer: Implement remaining callback")
Signed-off-by: Andrei Vagin <avagin@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Mukesh Ojha <mojha@codeaurora.org>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/20190408041542.26338-1-avagin@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sven Schnelle [Thu, 4 Apr 2019 16:16:04 +0000 (18:16 +0200)]
parisc: also set iaoq_b in instruction_pointer_set()
commit
f324fa58327791b2696628b31480e7e21c745706 upstream.
When setting the instruction pointer on PA-RISC we also need
to set the back of the instruction queue to the new offset, otherwise
we will execute on instruction from the new location, and jumping
back to the old location stored in iaoq_b.
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Helge Deller <deller@gmx.de>
Fixes:
75ebedf1d263 ("parisc: Add HAVE_REGS_AND_STACK_ACCESS_API feature")
Cc: stable@vger.kernel.org # 4.19+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sven Schnelle [Thu, 4 Apr 2019 16:16:03 +0000 (18:16 +0200)]
parisc: regs_return_value() should return gpr28
commit
45efd871bf0a47648f119d1b41467f70484de5bc upstream.
While working on kretprobes for PA-RISC I was wondering while the
kprobes sanity test always fails on kretprobes. This is caused by
returning gpr20 instead of gpr28.
Signed-off-by: Sven Schnelle <svens@stackframe.org>
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # 4.14+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Helge Deller [Tue, 2 Apr 2019 10:13:27 +0000 (12:13 +0200)]
parisc: Detect QEMU earlier in boot process
commit
d006e95b5561f708d0385e9677ffe2c46f2ae345 upstream.
While adding LASI support to QEMU, I noticed that the QEMU detection in
the kernel happens much too late. For example, when a LASI chip is found
by the kernel, it registers the LASI LED driver as well. But when we
run on QEMU it makes sense to avoid spending unnecessary CPU cycles, so
we need to access the running_on_QEMU flag earlier than before.
This patch now makes the QEMU detection the fist task of the Linux
kernel by moving it to where the kernel enters the C-coding.
Fixes:
310d82784fb4 ("parisc: qemu idle sleep support")
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v4.14+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Peter Geis [Wed, 13 Mar 2019 19:02:30 +0000 (19:02 +0000)]
arm64: dts: rockchip: fix rk3328 sdmmc0 write errors
commit
09f91381fa5de1d44bc323d8bf345f5d57b3d9b5 upstream.
Various rk3328 based boards experience occasional sdmmc0 write errors.
This is due to the rk3328.dtsi tx drive levels being set to 4ma, vs
8ma per the rk3328 datasheet default settings.
Fix this by setting the tx signal pins to 8ma.
Inspiration from tonymac32's patch,
https://github.com/ayufan-rock64/linux-kernel/commit/
dc1212b347e0da17c5460bcc0a56b07d02bac3f8
Fixes issues on the rk3328-roc-cc and the rk3328-rock64 (as per the
above commit message).
Tested on the rk3328-roc-cc board.
Fixes:
52e02d377a72 ("arm64: dts: rockchip: add core dtsi file for RK3328 SoCs")
Cc: stable@vger.kernel.org
Signed-off-by: Peter Geis <pgwipeout@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Aneesh Kumar K.V [Sat, 6 Apr 2019 01:39:10 +0000 (18:39 -0700)]
mm/huge_memory.c: fix modifying of page protection by insert_pfn_pmd()
commit
c6f3c5ee40c10bb65725047a220570f718507001 upstream.
With some architectures like ppc64, set_pmd_at() cannot cope with a
situation where there is already some (different) valid entry present.
Use pmdp_set_access_flags() instead to modify the pfn which is built to
deal with modifying existing PMD entries.
This is similar to commit
cae85cb8add3 ("mm/memory.c: fix modifying of
page protection by insert_pfn()")
We also do similar update w.r.t insert_pfn_pud eventhough ppc64 don't
support pud pfn entries now.
Without this patch we also see the below message in kernel log "BUG:
non-zero pgtables_bytes on freeing mm:"
Link: http://lkml.kernel.org/r/20190402115125.18803-1-aneesh.kumar@linux.ibm.com
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Reported-by: Chandan Rajendra <chandan@linux.ibm.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Hui Wang [Mon, 8 Apr 2019 07:58:11 +0000 (15:58 +0800)]
ALSA: hda - Add two more machines to the power_save_blacklist
commit
cae30527901d9590db0e12ace994c1d58bea87fd upstream.
Recently we set CONFIG_SND_HDA_POWER_SAVE_DEFAULT to 1 when
configuring the kernel, then two machines were reported to have noise
after installing the new kernel. Put them in the blacklist, the
noise disappears.
https://bugs.launchpad.net/bugs/1821663
Cc: <stable@vger.kernel.org>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Richard Sailer [Tue, 2 Apr 2019 13:52:04 +0000 (15:52 +0200)]
ALSA: hda/realtek - Add quirk for Tuxedo XC 1509
commit
80690a276f444a68a332136d98bfea1c338bc263 upstream.
This adds a SND_PCI_QUIRK(...) line for the Tuxedo XC 1509.
The Tuxedo XC 1509 and the System76 oryp5 are the same barebone
notebooks manufactured by Clevo. To name the fixups both use after the
actual underlying hardware, this patch also changes System76_orpy5
to clevo_pb51ed in 2 enum symbols and one function name,
matching the other pci_quirk entries which are also named after the
device ODM.
Fixes:
7f665b1c3283 ("ALSA: hda/realtek - Headset microphone and internal speaker support for System76 oryp5")
Signed-off-by: Richard Sailer <rs@tuxedocomputers.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jian-Hong Pan [Mon, 1 Apr 2019 03:25:05 +0000 (11:25 +0800)]
ALSA: hda/realtek: Enable headset MIC of Acer TravelMate B114-21 with ALC233
commit
ea5c7eba216e832906e594799b8670f1954a588c upstream.
The Acer TravelMate B114-21 laptop cannot detect and record sound from
headset MIC. This patch adds the ALC233_FIXUP_ACER_HEADSET_MIC HDA verb
quirk chained with ALC233_FIXUP_ASUS_MIC_NO_PRESENCE pin quirk to fix
this issue.
[ fixed the missing brace and reordered the entry -- tiwai ]
Signed-off-by: Jian-Hong Pan <jian-hong@endlessm.com>
Signed-off-by: Daniel Drake <drake@endlessm.com>
Reviewed-by: Kailang Yang <kailang@realtek.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Zubin Mithra [Thu, 4 Apr 2019 21:33:55 +0000 (14:33 -0700)]
ALSA: seq: Fix OOB-reads from strlcpy
commit
212ac181c158c09038c474ba68068be49caecebb upstream.
When ioctl calls are made with non-null-terminated userspace strings,
strlcpy causes an OOB-read from within strlen. Fix by changing to use
strscpy instead.
Signed-off-by: Zubin Mithra <zsm@chromium.org>
Reviewed-by: Guenter Roeck <groeck@chromium.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Erik Schmauss [Mon, 8 Apr 2019 20:42:26 +0000 (13:42 -0700)]
ACPICA: Namespace: remove address node from global list after method termination
commit
c5781ffbbd4f742a58263458145fe7f0ac01d9e0 upstream.
ACPICA commit
b233720031a480abd438f2e9c643080929d144c3
ASL operation_regions declare a range of addresses that it uses. In a
perfect world, the range of addresses should be used exclusively by
the AML interpreter. The OS can use this information to decide which
drivers to load so that the AML interpreter and device drivers use
different regions of memory.
During table load, the address information is added to a global
address range list. Each node in this list contains an address range
as well as a namespace node of the operation_region. This list is
deleted at ACPI shutdown.
Unfortunately, ASL operation_regions can be declared inside of control
methods. Although this is not recommended, modern firmware contains
such code. New module level code changes unintentionally removed the
functionality of adding and removing nodes to the global address
range list.
A few months ago, support for adding addresses has been re-
implemented. However, the removal of the address range list was
missed and resulted in some systems to crash due to the address list
containing bogus namespace nodes from operation_regions declared in
control methods. In order to fix the crash, this change removes
dynamic operation_regions after control method termination.
Link: https://github.com/acpica/acpica/commit/b2337200
Link: https://bugzilla.kernel.org/show_bug.cgi?id=202475
Fixes:
4abb951b73ff ("ACPICA: AML interpreter: add region addresses in global list during initialization")
Reported-by: Michael J Gruber <mjg@fedoraproject.org>
Signed-off-by: Erik Schmauss <erik.schmauss@intel.com>
Signed-off-by: Bob Moore <robert.moore@intel.com>
Cc: 4.20+ <stable@vger.kernel.org> # 4.20+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Furquan Shaikh [Wed, 20 Mar 2019 22:28:44 +0000 (15:28 -0700)]
ACPICA: Clear status of GPEs before enabling them
commit
c8b1917c8987a6fa3695d479b4d60fbbbc3e537b upstream.
Commit
18996f2db918 ("ACPICA: Events: Stop unconditionally clearing
ACPI IRQs during suspend/resume") was added to stop clearing event
status bits unconditionally in the system-wide suspend and resume
paths. This was done because of an issue with a laptop lid appaering
to be closed even when it was used to wake up the system from suspend
(see https://bugzilla.kernel.org/show_bug.cgi?id=196249), which
happened because event status bits were cleared unconditionally on
system resume. Though this change fixed the issue in the resume path,
it introduced regressions in a few suspend paths.
First regression was reported and fixed in the S5 entry path by commit
fa85015c0d95 ("ACPICA: Clear status of all events when entering S5").
Next regression was reported and fixed for all legacy sleep paths by
commit
f317c7dc12b7 ("ACPICA: Clear status of all events when entering
sleep states"). However, there still is a suspend-to-idle regression,
since suspend-to-idle does not follow the legacy sleep paths.
In the suspend-to-idle case, wakeup is enabled as part of device
suspend. If the status bits of wakeup GPEs are set when they are
enabled, it causes a premature system wakeup to occur.
To address that problem, partially revert commit
18996f2db918 to
restore GPE status bits clearing before the GPE is enabled in
acpi_ev_enable_gpe().
Fixes:
18996f2db918 ("ACPICA: Events: Stop unconditionally clearing ACPI IRQs during suspend/resume")
Signed-off-by: Furquan Shaikh <furquan@google.com>
Cc: 4.17+ <stable@vger.kernel.org> # 4.17+
[ rjw: Subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Axel Lin [Mon, 11 Mar 2019 09:57:30 +0000 (17:57 +0800)]
hwmon: (w83773g) Select REGMAP_I2C to fix build error
commit
a165dcc923ada2ffdee1d4f41f12f81b66d04c55 upstream.
Select REGMAP_I2C to avoid below build error:
ERROR: "__devm_regmap_init_i2c" [drivers/hwmon/w83773g.ko] undefined!
Fixes:
ee249f271524 ("hwmon: Add W83773G driver")
Cc: stable@vger.kernel.org
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Mon, 21 Jan 2019 16:26:42 +0000 (17:26 +0100)]
tty: ldisc: add sysctl to prevent autoloading of ldiscs
commit
7c0cca7c847e6e019d67b7d793efbbe3b947d004 upstream.
By default, the kernel will automatically load the module of any line
dicipline that is asked for. As this sometimes isn't the safest thing
to do, provide a sysctl to disable this feature.
By default, we set this to 'y' as that is the historical way that Linux
has worked, and we do not want to break working systems. But in the
future, perhaps this can default to 'n' to prevent this functionality.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Fri, 5 Apr 2019 13:39:26 +0000 (15:39 +0200)]
tty: mark Siemens R3964 line discipline as BROKEN
commit
c7084edc3f6d67750f50d4183134c4fb5712a5c8 upstream.
The n_r3964 line discipline driver was written in a different time, when
SMP machines were rare, and users were trusted to do the right thing.
Since then, the world has moved on but not this code, it has stayed
rooted in the past with its lovely hand-crafted list structures and
loads of "interesting" race conditions all over the place.
After attempting to clean up most of the issues, I just gave up and am
now marking the driver as BROKEN so that hopefully someone who has this
hardware will show up out of the woodwork (I know you are out there!)
and will help with debugging a raft of changes that I had laying around
for the code, but was too afraid to commit as odds are they would break
things.
Many thanks to Jann and Linus for pointing out the initial problems in
this codebase, as well as many reviews of my attempts to fix the issues.
It was a case of whack-a-mole, and as you can see, the mole won.
Reported-by: Jann Horn <jannh@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Yueyi Li [Mon, 24 Dec 2018 07:40:07 +0000 (07:40 +0000)]
arm64: kaslr: Reserve size of ARM64_MEMSTART_ALIGN in linear region
[ Upstream commit
c8a43c18a97845e7f94ed7d181c11f41964976a2 ]
When KASLR is enabled (CONFIG_RANDOMIZE_BASE=y), the top 4K of kernel
virtual address space may be mapped to physical addresses despite being
reserved for ERR_PTR values.
Fix the randomization of the linear region so that we avoid mapping the
last page of the virtual address space.
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: liyueyi <liyueyi@live.com>
[will: rewrote commit message; merged in suggestion from Ard]
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
Florian Westphal [Fri, 12 Apr 2019 17:55:03 +0000 (10:55 -0700)]
netfilter: nfnetlink_cttimeout: fetch timeouts for udplite and gre, too
commit
89259088c1b7fecb43e8e245dc931909132a4e03 upstream
syzbot was able to trigger the WARN in cttimeout_default_get() by
passing UDPLITE as l4protocol. Alias UDPLITE to UDP, both use
same timeout values.
Furthermore, also fetch GRE timeouts. GRE is a bit more complicated,
as it still can be a module and its netns_proto_gre struct layout isn't
visible outside of the gre module. Can't move timeouts around, it
appears conntrack sysctl unregister assumes net_generic() returns
nf_proto_net, so we get crash. Expose layout of netns_proto_gre instead.
A followup nf-next patch could make gre tracker be built-in as well
if needed, its not that large.
Last, make the WARN() mention the missing protocol value in case
anything else is missing.
Reported-by: syzbot+2fae8fa157dd92618cae@syzkaller.appspotmail.com
Fixes:
8866df9264a3 ("netfilter: nfnetlink_cttimeout: pass default timeout policy to obj_to_nlattr")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Zubin Mithra <zsm@chromium.org>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
Pablo Neira Ayuso [Fri, 12 Apr 2019 17:55:02 +0000 (10:55 -0700)]
netfilter: nfnetlink_cttimeout: pass default timeout policy to obj_to_nlattr
commit
8866df9264a34e675b4ee8a151db819b87cce2d3 upstream
Otherwise, we hit a NULL pointer deference since handlers always assume
default timeout policy is passed.
netlink: 24 bytes leftover after parsing attributes in process `syz-executor2'.
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 9575 Comm: syz-executor1 Not tainted 4.19.0+ #312
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:icmp_timeout_obj_to_nlattr+0x77/0x170 net/netfilter/nf_conntrack_proto_icmp.c:297
Fixes:
c779e849608a ("netfilter: conntrack: remove get_timeout() indirection")
Reported-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Zubin Mithra <zsm@chromium.org>
Signed-off-by: Sasha Levin (Microsoft) <sashal@kernel.org>
Neil Armstrong [Thu, 11 Apr 2019 10:11:22 +0000 (12:11 +0200)]
Revert "clk: meson: clean-up clock registration"
This reverts commit
c8e4f8406842332fb55cd792016e5dac266f6354.
This patch was not initially a fix and is dependent on other
changes which are not fixes eithers.
With this change, multiple Amlogic based boards fails to boot,
as reported by kernelci.
Cc: stable@vger.kernel.org # 4.19.34
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Nick Desaulniers [Sat, 6 Apr 2019 01:38:45 +0000 (18:38 -0700)]
lib/string.c: implement a basic bcmp
[ Upstream commit
5f074f3e192f10c9fade898b9b3b8812e3d83342 ]
A recent optimization in Clang (r355672) lowers comparisons of the
return value of memcmp against zero to comparisons of the return value
of bcmp against zero. This helps some platforms that implement bcmp
more efficiently than memcmp. glibc simply aliases bcmp to memcmp, but
an optimized implementation is in the works.
This results in linkage failures for all targets with Clang due to the
undefined symbol. For now, just implement bcmp as a tailcail to memcmp
to unbreak the build. This routine can be further optimized in the
future.
Other ideas discussed:
* A weak alias was discussed, but breaks for architectures that define
their own implementations of memcmp since aliases to declarations are
not permitted (only definitions). Arch-specific memcmp
implementations typically declare memcmp in C headers, but implement
them in assembly.
* -ffreestanding also is used sporadically throughout the kernel.
* -fno-builtin-bcmp doesn't work when doing LTO.
Link: https://bugs.llvm.org/show_bug.cgi?id=41035
Link: https://code.woboq.org/userspace/glibc/string/memcmp.c.html#bcmp
Link: https://github.com/llvm/llvm-project/commit/8e16d73346f8091461319a7dfc4ddd18eedcff13
Link: https://github.com/ClangBuiltLinux/linux/issues/416
Link: http://lkml.kernel.org/r/20190313211335.165605-1-ndesaulniers@google.com
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Reported-by: Nathan Chancellor <natechancellor@gmail.com>
Reported-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: James Y Knight <jyknight@google.com>
Suggested-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
Suggested-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Nick Desaulniers [Thu, 6 Dec 2018 19:12:31 +0000 (11:12 -0800)]
x86/vdso: Drop implicit common-page-size linker flag
commit
ac3e233d29f7f77f28243af0132057d378d3ea58 upstream.
GNU linker's -z common-page-size's default value is based on the target
architecture. arch/x86/entry/vdso/Makefile sets it to the architecture
default, which is implicit and redundant. Drop it.
Fixes:
2aae950b21e4 ("x86_64: Add vDSO for x86-64 with gettimeofday/clock_gettime/getcpu")
Reported-by: Dmitry Golovin <dima@golovin.in>
Reported-by: Bill Wendling <morbo@google.com>
Suggested-by: Dmitry Golovin <dima@golovin.in>
Suggested-by: Rui Ueyama <ruiu@google.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Andy Lutomirski <luto@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Fangrui Song <maskray@google.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20181206191231.192355-1-ndesaulniers@google.com
Link: https://bugs.llvm.org/show_bug.cgi?id=38774
Link: https://github.com/ClangBuiltLinux/linux/issues/31
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Nick Desaulniers [Mon, 11 Feb 2019 19:30:04 +0000 (11:30 -0800)]
kbuild: clang: choose GCC_TOOLCHAIN_DIR not on LD
commit
ad15006cc78459d059af56729c4d9bed7c7fd860 upstream.
This causes an issue when trying to build with `make LD=ld.lld` if
ld.lld and the rest of your cross tools aren't in the same directory
(ex. /usr/local/bin) (as is the case for Android's build system), as the
GCC_TOOLCHAIN_DIR then gets set based on `which $(LD)` which will point
where LLVM tools are, not GCC/binutils tools are located.
Instead, select the GCC_TOOLCHAIN_DIR based on another tool provided by
binutils for which LLVM does not provide a substitute for, such as
elfedit.
Fixes:
785f11aa595b ("kbuild: Add better clang cross build support")
Link: https://github.com/ClangBuiltLinux/linux/issues/341
Suggested-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Masahiro Yamada [Mon, 5 Nov 2018 07:52:34 +0000 (16:52 +0900)]
kbuild: deb-pkg: fix bindeb-pkg breakage when O= is used
[ Upstream commit
02826a6ba301b72461c3706e1cc66d5571cd327e ]
Ard Biesheuvel reports bindeb-pkg with O= option is broken in the
following way:
...
LD [M] sound/soc/rockchip/snd-soc-rk3399-gru-sound.ko
LD [M] sound/soc/rockchip/snd-soc-rockchip-pcm.ko
LD [M] sound/soc/rockchip/snd-soc-rockchip-rt5645.ko
LD [M] sound/soc/rockchip/snd-soc-rockchip-spdif.ko
LD [M] sound/soc/sh/rcar/snd-soc-rcar.ko
fakeroot -u debian/rules binary
make KERNELRELEASE=4.19.0-12677-g19beffaf7a99-dirty ARCH=arm64 KBUILD_SRC= intdeb-pkg
/bin/bash /home/ard/linux/scripts/package/builddeb
Makefile:600: include/config/auto.conf: No such file or directory
***
*** Configuration file ".config" not found!
***
*** Please run some configurator (e.g. "make oldconfig" or
*** "make menuconfig" or "make xconfig").
***
make[12]: *** [syncconfig] Error 1
make[11]: *** [syncconfig] Error 2
make[10]: *** [include/config/auto.conf] Error 2
make[9]: *** [__sub-make] Error 2
...
Prior to commit
80463f1b7bf9 ("kbuild: add --include-dir flag only
for out-of-tree build"), both srctree and objtree were added to
--include-dir redundantly, and the wrong code '$MAKE image_name'
was working by relying on that. Now, the potential issue that had
previously been hidden just showed up.
'$MAKE image_name' recurses to the generated $(objtree)/Makefile and
ends up with running in srctree, which is incorrect. It should be
invoked with '-f $srctree/Makefile' (or KBUILD_SRC=) to be executed
in objtree.
Fixes:
80463f1b7bf9 ("kbuild: add --include-dir flag only for out-of-tree build")
Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Huy Nguyen [Thu, 7 Mar 2019 20:07:32 +0000 (14:07 -0600)]
net/mlx5e: Update xon formula
[ Upstream commit
e28408e98bced123038857b6e3c81fa12a2e3e68 ]
Set xon = xoff - netdev's max_mtu.
netdev's max_mtu will give enough time for the pause frame to
arrive at the sender.
Fixes:
0696d60853d5 ("net/mlx5e: Receive buffer configuration")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Huy Nguyen [Thu, 7 Mar 2019 20:49:50 +0000 (14:49 -0600)]
net/mlx5e: Update xoff formula
[ Upstream commit
5ec983e924c7978aaec3cf8679ece9436508bb20 ]
Set minimum speed in xoff threshold formula to 40Gbps
Fixes:
0696d60853d5 ("net/mlx5e: Receive buffer configuration")
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Aditya Pakki [Tue, 19 Mar 2019 21:42:40 +0000 (16:42 -0500)]
net: mlx5: Add a missing check on idr_find, free buf
[ Upstream commit
8e949363f017e2011464812a714fb29710fb95b4 ]
idr_find() can return a NULL value to 'flow' which is used without a
check. The patch adds a check to avoid potential NULL pointer dereference.
In case of mlx5_fpga_sbu_conn_sendmsg() failure, free buf allocated
using kzalloc.
Fixes:
ab412e1dd7db ("net/mlx5: Accel, add TLS rx offload routines")
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Heiner Kallweit [Sat, 30 Mar 2019 16:13:24 +0000 (17:13 +0100)]
r8169: disable default rx interrupt coalescing on RTL8168
[ Upstream commit
288ac524cf70a8e7ed851a61ed2a9744039dae8d ]
It was reported that re-introducing ASPM, in combination with RX
interrupt coalescing, results in significantly increased packet
latency, see [0]. Disabling ASPM or RX interrupt coalescing fixes
the issue. Therefore change the driver's default to disable RX
interrupt coalescing. Users still have the option to enable RX
coalescing via ethtool.
[0] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=925496
Fixes:
a99790bf5c7f ("r8169: Reinstate ASPM Support")
Reported-by: Mike Crowe <mac@mcrowe.com>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Alexander Lobakin [Thu, 28 Mar 2019 15:23:04 +0000 (18:23 +0300)]
net: core: netif_receive_skb_list: unlist skb before passing to pt->func
[ Upstream commit
9a5a90d167b0e5fe3d47af16b68fd09ce64085cd ]
__netif_receive_skb_list_ptype() leaves skb->next poisoned before passing
it to pt_prev->func handler, what may produce (in certain cases, e.g. DSA
setup) crashes like:
[ 88.606777] CPU 0 Unable to handle kernel paging request at virtual address
0000000e, epc ==
80687078, ra ==
8052cc7c
[ 88.618666] Oops[#1]:
[ 88.621196] CPU: 0 PID: 0 Comm: swapper Not tainted 5.1.0-rc2-dlink-00206-g4192a172-dirty #1473
[ 88.630885] $ 0 :
00000000 10000400 00000002 864d7850
[ 88.636709] $ 4 :
87c0ddf0 864d7800 87c0ddf0 00000000
[ 88.642526] $ 8 :
00000000 49600000 00000001 00000001
[ 88.648342] $12 :
00000000 c288617b dadbee27 25d17c41
[ 88.654159] $16 :
87c0ddf0 85cff080 80790000 fffffffd
[ 88.659975] $20 :
80797b20 ffffffff 00000001 864d7800
[ 88.665793] $24 :
00000000 8011e658
[ 88.671609] $28 :
80790000 87c0dbc0 87cabf00 8052cc7c
[ 88.677427] Hi :
00000003
[ 88.680622] Lo :
7b5b4220
[ 88.683840] epc :
80687078 vlan_dev_hard_start_xmit+0x1c/0x1a0
[ 88.690532] ra :
8052cc7c dev_hard_start_xmit+0xac/0x188
[ 88.696734] Status:
10000404 IEp
[ 88.700422] Cause :
50000008 (ExcCode 02)
[ 88.704874] BadVA :
0000000e
[ 88.708069] PrId :
0001a120 (MIPS interAptiv (multi))
[ 88.713005] Modules linked in:
[ 88.716407] Process swapper (pid: 0, threadinfo=(ptrval), task=(ptrval), tls=
00000000)
[ 88.725219] Stack :
85f61c28 00000000 0000000e 80780000 87c0ddf0 85cff080 80790000 8052cc7c
[ 88.734529]
87cabf00 00000000 00000001 85f5fb40 807b0000 864d7850 87cabf00 807d0000
[ 88.743839]
864d7800 8655f600 00000000 85cff080 87c1c000 0000006a 00000000 8052d96c
[ 88.753149]
807a0000 8057adb8 87c0dcc8 87c0dc50 85cfff08 00000558 87cabf00 85f58c50
[ 88.762460]
00000002 85f58c00 864d7800 80543308 fffffff4 00000001 85f58c00 864d7800
[ 88.771770] ...
[ 88.774483] Call Trace:
[ 88.777199] [<
80687078>] vlan_dev_hard_start_xmit+0x1c/0x1a0
[ 88.783504] [<
8052cc7c>] dev_hard_start_xmit+0xac/0x188
[ 88.789326] [<
8052d96c>] __dev_queue_xmit+0x6e8/0x7d4
[ 88.794955] [<
805a8640>] ip_finish_output2+0x238/0x4d0
[ 88.800677] [<
805ab6a0>] ip_output+0xc8/0x140
[ 88.805526] [<
805a68f4>] ip_forward+0x364/0x560
[ 88.810567] [<
805a4ff8>] ip_rcv+0x48/0xe4
[ 88.815030] [<
80528d44>] __netif_receive_skb_one_core+0x44/0x58
[ 88.821635] [<
8067f220>] dsa_switch_rcv+0x108/0x1ac
[ 88.827067] [<
80528f80>] __netif_receive_skb_list_core+0x228/0x26c
[ 88.833951] [<
8052ed84>] netif_receive_skb_list+0x1d4/0x394
[ 88.840160] [<
80355a88>] lunar_rx_poll+0x38c/0x828
[ 88.845496] [<
8052fa78>] net_rx_action+0x14c/0x3cc
[ 88.850835] [<
806ad300>] __do_softirq+0x178/0x338
[ 88.856077] [<
8012a2d4>] irq_exit+0xbc/0x100
[ 88.860846] [<
802f8b70>] plat_irq_dispatch+0xc0/0x144
[ 88.866477] [<
80105974>] handle_int+0x14c/0x158
[ 88.871516] [<
806acfb0>] r4k_wait+0x30/0x40
[ 88.876462] Code:
afb10014 8c8200a0 00803025 <
9443000c>
94a20468 00000000 10620042 00a08025 9605046a
[ 88.887332]
[ 88.888982] ---[ end trace
eb863d007da11cf1 ]---
[ 88.894122] Kernel panic - not syncing: Fatal exception in interrupt
[ 88.901202] ---[ end Kernel panic - not syncing: Fatal exception in interrupt ]---
Fix this by pulling skb off the sublist and zeroing skb->next pointer
before calling ptype callback.
Fixes:
88eb1944e18c ("net: core: propagate SKB lists through packet_type lookup")
Reviewed-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: Alexander Lobakin <alobakin@dlink.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Lorenzo Bianconi [Sat, 6 Apr 2019 15:16:53 +0000 (17:16 +0200)]
net: ip6_gre: fix possible use-after-free in ip6erspan_rcv
[ Upstream commit
2a3cabae4536edbcb21d344e7aa8be7a584d2afb ]
erspan_v6 tunnels run __iptunnel_pull_header on received skbs to remove
erspan header. This can determine a possible use-after-free accessing
pkt_md pointer in ip6erspan_rcv since the packet will be 'uncloned'
running pskb_expand_head if it is a cloned gso skb (e.g if the packet has
been sent though a veth device). Fix it resetting pkt_md pointer after
__iptunnel_pull_header
Fixes:
1d7e2ed22f8d ("net: erspan: refactor existing erspan code")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Lorenzo Bianconi [Sat, 6 Apr 2019 15:16:52 +0000 (17:16 +0200)]
net: ip_gre: fix possible use-after-free in erspan_rcv
[ Upstream commit
492b67e28ee5f2a2522fb72e3d3bcb990e461514 ]
erspan tunnels run __iptunnel_pull_header on received skbs to remove
gre and erspan headers. This can determine a possible use-after-free
accessing pkt_md pointer in erspan_rcv since the packet will be 'uncloned'
running pskb_expand_head if it is a cloned gso skb (e.g if the packet has
been sent though a veth device). Fix it resetting pkt_md pointer after
__iptunnel_pull_header
Fixes:
1d7e2ed22f8d ("net: erspan: refactor existing erspan code")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Michael Chan [Mon, 8 Apr 2019 21:39:55 +0000 (17:39 -0400)]
bnxt_en: Reset device on RX buffer errors.
[ Upstream commit
8e44e96c6c8e8fb80b84a2ca11798a8554f710f2 ]
If the RX completion indicates RX buffers errors, the RX ring will be
disabled by firmware and no packets will be received on that ring from
that point on. Recover by resetting the device.
Fixes:
c0c050c58d84 ("bnxt_en: New Broadcom ethernet driver.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Michael Chan [Mon, 8 Apr 2019 21:39:54 +0000 (17:39 -0400)]
bnxt_en: Improve RX consumer index validity check.
[ Upstream commit
a1b0e4e684e9c300b9e759b46cb7a0147e61ddff ]
There is logic to check that the RX/TPA consumer index is the expected
index to work around a hardware problem. However, the potentially bad
consumer index is first used to index into an array to reference an entry.
This can potentially crash if the bad consumer index is beyond legal
range. Improve the logic to use the consumer index for dereferencing
after the validity check and log an error message.
Fixes:
fa7e28127a5a ("bnxt_en: Add workaround to detect bad opaque in rx completion (part 2)")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Jakub Kicinski [Wed, 27 Mar 2019 18:38:39 +0000 (11:38 -0700)]
nfp: disable netpoll on representors
[ Upstream commit
c3e1f7fff69c78169c8ac40cc74ac4307f74e36d ]
NFP reprs are software device on top of the PF's vNIC.
The comment above __dev_queue_xmit() sayeth:
When calling this method, interrupts MUST be enabled. This is because
the BH enable code must have IRQs enabled so that it will not deadlock.
For netconsole we can't guarantee IRQ state, let's just
disable netpoll on representors to be on the safe side.
When the initial implementation of NFP reprs was added by the
commit
5de73ee46704 ("nfp: general representor implementation")
.ndo_poll_controller was required for netpoll to be enabled.
Fixes:
ac3d9dd034e5 ("netpoll: make ndo_poll_controller() optional")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Jakub Kicinski [Wed, 27 Mar 2019 18:38:38 +0000 (11:38 -0700)]
nfp: validate the return code from dev_queue_xmit()
[ Upstream commit
c8ba5b91a04e3e2643e48501c114108802f21cda ]
dev_queue_xmit() may return error codes as well as netdev_tx_t,
and it always consumes the skb. Make sure we always return a
correct netdev_tx_t value.
Fixes:
eadfa4c3be99 ("nfp: add stats and xmit helpers for representors")
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Yuval Avnery [Mon, 11 Mar 2019 04:18:24 +0000 (06:18 +0200)]
net/mlx5e: Add a lock on tir list
[ Upstream commit
80a2a9026b24c6bd34b8d58256973e22270bedec ]
Refresh tirs is looping over a global list of tirs while netdevs are
adding and removing tirs from that list. That is why a lock is
required.
Fixes:
724b2aa15126 ("net/mlx5e: TIRs management refactoring")
Signed-off-by: Yuval Avnery <yuvalav@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Gavi Teitz [Mon, 11 Mar 2019 09:56:34 +0000 (11:56 +0200)]
net/mlx5e: Fix error handling when refreshing TIRs
[ Upstream commit
bc87a0036826a37b43489b029af8143bd07c6cca ]
Previously, a false positive would be caught if the TIRs list is
empty, since the err value was initialized to -ENOMEM, and was only
updated if a TIR is refreshed. This is resolved by initializing the
err value to zero.
Fixes:
b676f653896a ("net/mlx5e: Refactor refresh TIRs")
Signed-off-by: Gavi Teitz <gavi@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Stephen Suryaputra [Mon, 1 Apr 2019 13:17:32 +0000 (09:17 -0400)]
vrf: check accept_source_route on the original netdevice
[ Upstream commit
8c83f2df9c6578ea4c5b940d8238ad8a41b87e9e ]
Configuration check to accept source route IP options should be made on
the incoming netdevice when the skb->dev is an l3mdev master. The route
lookup for the source route next hop also needs the incoming netdev.
v2->v3:
- Simplify by passing the original netdevice down the stack (per David
Ahern).
Signed-off-by: Stephen Suryaputra <ssuryaextr@gmail.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Dust Li [Mon, 1 Apr 2019 08:04:53 +0000 (16:04 +0800)]
tcp: fix a potential NULL pointer dereference in tcp_sk_exit
[ Upstream commit
b506bc975f60f06e13e74adb35e708a23dc4e87c ]
When tcp_sk_init() failed in inet_ctl_sock_create(),
'net->ipv4.tcp_congestion_control' will be left
uninitialized, but tcp_sk_exit() hasn't check for
that.
This patch add checking on 'net->ipv4.tcp_congestion_control'
in tcp_sk_exit() to prevent NULL-ptr dereference.
Fixes:
6670e1524477 ("tcp: Namespace-ify sysctl_tcp_default_congestion_control")
Signed-off-by: Dust Li <dust.li@linux.alibaba.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Koen De Schepper [Thu, 4 Apr 2019 12:24:02 +0000 (12:24 +0000)]
tcp: Ensure DCTCP reacts to losses
[ Upstream commit
aecfde23108b8e637d9f5c5e523b24fb97035dc3 ]
RFC8257 §3.5 explicitly states that "A DCTCP sender MUST react to
loss episodes in the same way as conventional TCP".
Currently, Linux DCTCP performs no cwnd reduction when losses
are encountered. Optionally, the dctcp_clamp_alpha_on_loss resets
alpha to its maximal value if a RTO happens. This behavior
is sub-optimal for at least two reasons: i) it ignores losses
triggering fast retransmissions; and ii) it causes unnecessary large
cwnd reduction in the future if the loss was isolated as it resets
the historical term of DCTCP's alpha EWMA to its maximal value (i.e.,
denoting a total congestion). The second reason has an especially
noticeable effect when using DCTCP in high BDP environments, where
alpha normally stays at low values.
This patch replace the clamping of alpha by setting ssthresh to
half of cwnd for both fast retransmissions and RTOs, at most once
per RTT. Consequently, the dctcp_clamp_alpha_on_loss module parameter
has been removed.
The table below shows experimental results where we measured the
drop probability of a PIE AQM (not applying ECN marks) at a
bottleneck in the presence of a single TCP flow with either the
alpha-clamping option enabled or the cwnd halving proposed by this
patch. Results using reno or cubic are given for comparison.
| Link | RTT | Drop
TCP CC | speed | base+AQM | probability
==================|=========|==========|============
CUBIC | 40Mbps | 7+20ms | 0.21%
RENO | | | 0.19%
DCTCP-CLAMP-ALPHA | | | 25.80%
DCTCP-HALVE-CWND | | | 0.22%
------------------|---------|----------|------------
CUBIC | 100Mbps | 7+20ms | 0.03%
RENO | | | 0.02%
DCTCP-CLAMP-ALPHA | | | 23.30%
DCTCP-HALVE-CWND | | | 0.04%
------------------|---------|----------|------------
CUBIC | 800Mbps | 1+1ms | 0.04%
RENO | | | 0.05%
DCTCP-CLAMP-ALPHA | | | 18.70%
DCTCP-HALVE-CWND | | | 0.06%
We see that, without halving its cwnd for all source of losses,
DCTCP drives the AQM to large drop probabilities in order to keep
the queue length under control (i.e., it repeatedly faces RTOs).
Instead, if DCTCP reacts to all source of losses, it can then be
controlled by the AQM using similar drop levels than cubic or reno.
Signed-off-by: Koen De Schepper <koen.de_schepper@nokia-bell-labs.com>
Signed-off-by: Olivier Tilmans <olivier.tilmans@nokia-bell-labs.com>
Cc: Bob Briscoe <research@bobbriscoe.net>
Cc: Lawrence Brakmo <brakmo@fb.com>
Cc: Florian Westphal <fw@strlen.de>
Cc: Daniel Borkmann <borkmann@iogearbox.net>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: Andrew Shewmaker <agshew@gmail.com>
Cc: Glenn Judd <glenn.judd@morganstanley.com>
Acked-by: Florian Westphal <fw@strlen.de>
Acked-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Xin Long [Sun, 31 Mar 2019 08:58:15 +0000 (16:58 +0800)]
sctp: initialize _pad of sockaddr_in before copying to user memory
[ Upstream commit
09279e615c81ce55e04835970601ae286e3facbe ]
Syzbot report a kernel-infoleak:
BUG: KMSAN: kernel-infoleak in _copy_to_user+0x16b/0x1f0 lib/usercopy.c:32
Call Trace:
_copy_to_user+0x16b/0x1f0 lib/usercopy.c:32
copy_to_user include/linux/uaccess.h:174 [inline]
sctp_getsockopt_peer_addrs net/sctp/socket.c:5911 [inline]
sctp_getsockopt+0x1668e/0x17f70 net/sctp/socket.c:7562
...
Uninit was stored to memory at:
sctp_transport_init net/sctp/transport.c:61 [inline]
sctp_transport_new+0x16d/0x9a0 net/sctp/transport.c:115
sctp_assoc_add_peer+0x532/0x1f70 net/sctp/associola.c:637
sctp_process_param net/sctp/sm_make_chunk.c:2548 [inline]
sctp_process_init+0x1a1b/0x3ed0 net/sctp/sm_make_chunk.c:2361
...
Bytes 8-15 of 16 are uninitialized
It was caused by that th _pad field (the 8-15 bytes) of a v4 addr (saved in
struct sockaddr_in) wasn't initialized, but directly copied to user memory
in sctp_getsockopt_peer_addrs().
So fix it by calling memset(addr->v4.sin_zero, 0, 8) to initialize _pad of
sockaddr_in before copying it to user memory in sctp_v4_addr_to_user(), as
sctp_v6_addr_to_user() does.
Reported-by: syzbot+86b5c7c236a22616a72f@syzkaller.appspotmail.com
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Tested-by: Alexander Potapenko <glider@google.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Heiner Kallweit [Fri, 5 Apr 2019 18:46:46 +0000 (20:46 +0200)]
r8169: disable ASPM again
[ Upstream commit
b75bb8a5b755d0c7bf1ac071e4df2349a7644a1e ]
There's a significant number of reports that re-enabling ASPM causes
different issues, ranging from decreased performance to system not
booting at all. This affects only a minority of users, but the number
of affected users is big enough that we better switch off ASPM again.
This will hurt notebook users who are not affected by the issues, they
may see decreased battery runtime w/o ASPM. With the PCI core folks is
being discussed to add generic sysfs attributes to control ASPM.
Once this is in place brave enough users can re-enable ASPM on their
system.
Fixes:
a99790bf5c7f ("r8169: Reinstate ASPM Support")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Bjørn Mork [Wed, 27 Mar 2019 14:26:01 +0000 (15:26 +0100)]
qmi_wwan: add Olicard 600
[ Upstream commit
6289d0facd9ebce4cc83e5da39e15643ee998dc5 ]
This is a Qualcomm based device with a QMI function on interface 4.
It is mode switched from 2020:2030 using a standard eject message.
T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 6 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=2020 ProdID=2031 Rev= 2.32
S: Manufacturer=Mobile Connect
S: Product=Mobile Connect
S: SerialNumber=
0123456789ABCDEF
C:* #Ifs= 6 Cfg#= 1 Atr=80 MxPwr=500mA
I:* If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=81(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=01(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
E: Ad=83(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
E: Ad=85(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=84(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=03(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=(none)
E: Ad=87(I) Atr=03(Int.) MxPS= 10 Ivl=32ms
E: Ad=86(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=04(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none)
E: Ad=89(I) Atr=03(Int.) MxPS= 8 Ivl=32ms
E: Ad=88(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=05(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 5 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=(none)
E: Ad=8a(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=06(O) Atr=02(Bulk) MxPS= 512 Ivl=125us
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Andrea Righi [Thu, 28 Mar 2019 06:36:00 +0000 (07:36 +0100)]
openvswitch: fix flow actions reallocation
[ Upstream commit
f28cd2af22a0c134e4aa1c64a70f70d815d473fb ]
The flow action buffer can be resized if it's not big enough to contain
all the requested flow actions. However, this resize doesn't take into
account the new requested size, the buffer is only increased by a factor
of 2x. This might be not enough to contain the new data, causing a
buffer overflow, for example:
[ 42.044472] =============================================================================
[ 42.045608] BUG kmalloc-96 (Not tainted): Redzone overwritten
[ 42.046415] -----------------------------------------------------------------------------
[ 42.047715] Disabling lock debugging due to kernel taint
[ 42.047716] INFO: 0x8bf2c4a5-0x720c0928. First byte 0x0 instead of 0xcc
[ 42.048677] INFO: Slab 0xbc6d2040 objects=29 used=18 fp=0xdc07dec4 flags=0x2808101
[ 42.049743] INFO: Object 0xd53a3464 @offset=2528 fp=0xccdcdebb
[ 42.050747] Redzone
76f1b237: cc cc cc cc cc cc cc cc ........
[ 42.051839] Object
d53a3464: 6b 6b 6b 6b 6b 6b 6b 6b 0c 00 00 00 6c 00 00 00 kkkkkkkk....l...
[ 42.053015] Object
f49a30cc: 6c 00 0c 00 00 00 00 00 00 00 00 03 78 a3 15 f6 l...........x...
[ 42.054203] Object
acfe4220: 20 00 02 00 ff ff ff ff 00 00 00 00 00 00 00 00 ...............
[ 42.055370] Object
21024e91: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
[ 42.056541] Object
070e04c3: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
[ 42.057797] Object
948a777a: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
[ 42.059061] Redzone
8bf2c4a5: 00 00 00 00 ....
[ 42.060189] Padding
a681b46e: 5a 5a 5a 5a 5a 5a 5a 5a ZZZZZZZZ
Fix by making sure the new buffer is properly resized to contain all the
requested data.
BugLink: https://bugs.launchpad.net/bugs/1813244
Signed-off-by: Andrea Righi <andrea.righi@canonical.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Nicolas Dichtel [Thu, 28 Mar 2019 09:35:06 +0000 (10:35 +0100)]
net/sched: fix ->get helper of the matchall cls
[ Upstream commit
0db6f8befc32c68bb13d7ffbb2e563c79e913e13 ]
It returned always NULL, thus it was never possible to get the filter.
Example:
$ ip link add foo type dummy
$ ip link add bar type dummy
$ tc qdisc add dev foo clsact
$ tc filter add dev foo protocol all pref 1 ingress handle 1234 \
matchall action mirred ingress mirror dev bar
Before the patch:
$ tc filter get dev foo protocol all pref 1 ingress handle 1234 matchall
Error: Specified filter handle not found.
We have an error talking to the kernel
After:
$ tc filter get dev foo protocol all pref 1 ingress handle 1234 matchall
filter ingress protocol all pref 1 matchall chain 0 handle 0x4d2
not_in_hw
action order 1: mirred (Ingress Mirror to device bar) pipe
index 1 ref 1 bind 1
CC: Yotam Gigi <yotamg@mellanox.com>
CC: Jiri Pirko <jiri@mellanox.com>
Fixes:
fd62d9f5c575 ("net/sched: matchall: Fix configuration race")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Davide Caratti [Thu, 4 Apr 2019 10:31:35 +0000 (12:31 +0200)]
net/sched: act_sample: fix divide by zero in the traffic path
[ Upstream commit
fae2708174ae95d98d19f194e03d6e8f688ae195 ]
the control path of 'sample' action does not validate the value of 'rate'
provided by the user, but then it uses it as divisor in the traffic path.
Validate it in tcf_sample_init(), and return -EINVAL with a proper extack
message in case that value is zero, to fix a splat with the script below:
# tc f a dev test0 egress matchall action sample rate 0 group 1 index 2
# tc -s a s action sample
total acts 1
action order 0: sample rate 1/0 group 1 pipe
index 2 ref 1 bind 1 installed 19 sec used 19 sec
Action statistics:
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
# ping 192.0.2.1 -I test0 -c1 -q
divide error: 0000 [#1] SMP PTI
CPU: 1 PID: 6192 Comm: ping Not tainted 5.1.0-rc2.diag2+ #591
Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2011
RIP: 0010:tcf_sample_act+0x9e/0x1e0 [act_sample]
Code: 6a f1 85 c0 74 0d 80 3d 83 1a 00 00 00 0f 84 9c 00 00 00 4d 85 e4 0f 84 85 00 00 00 e8 9b d7 9c f1 44 8b 8b e0 00 00 00 31 d2 <41> f7 f1 85 d2 75 70 f6 85 83 00 00 00 10 48 8b 45 10 8b 88 08 01
RSP: 0018:
ffffae320190ba30 EFLAGS:
00010246
RAX:
00000000b0677d21 RBX:
ffff8af1ed9ec000 RCX:
0000000059a9fe49
RDX:
0000000000000000 RSI:
000000000c7e33b7 RDI:
ffff8af23daa0af0
RBP:
ffff8af1ee11b200 R08:
0000000074fcaf7e R09:
0000000000000000
R10:
0000000000000050 R11:
ffffffffb3088680 R12:
ffff8af232307f80
R13:
0000000000000003 R14:
ffff8af1ed9ec000 R15:
0000000000000000
FS:
00007fe9c6d2f740(0000) GS:
ffff8af23da80000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
00007fff6772f000 CR3:
00000000746a2004 CR4:
00000000001606e0
Call Trace:
tcf_action_exec+0x7c/0x1c0
tcf_classify+0x57/0x160
__dev_queue_xmit+0x3dc/0xd10
ip_finish_output2+0x257/0x6d0
ip_output+0x75/0x280
ip_send_skb+0x15/0x40
raw_sendmsg+0xae3/0x1410
sock_sendmsg+0x36/0x40
__sys_sendto+0x10e/0x140
__x64_sys_sendto+0x24/0x30
do_syscall_64+0x60/0x210
entry_SYSCALL_64_after_hwframe+0x49/0xbe
[...]
Kernel panic - not syncing: Fatal exception in interrupt
Add a TDC selftest to document that 'rate' is now being validated.
Reported-by: Matteo Croce <mcroce@redhat.com>
Fixes:
5c5670fae430 ("net/sched: Introduce sample tc action")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Yotam Gigi <yotam.gi@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Mao Wenan [Thu, 28 Mar 2019 09:10:56 +0000 (17:10 +0800)]
net: rds: force to destroy connection if t_sock is NULL in rds_tcp_kill_sock().
[ Upstream commit
cb66ddd156203daefb8d71158036b27b0e2caf63 ]
When it is to cleanup net namespace, rds_tcp_exit_net() will call
rds_tcp_kill_sock(), if t_sock is NULL, it will not call
rds_conn_destroy(), rds_conn_path_destroy() and rds_tcp_conn_free() to free
connection, and the worker cp_conn_w is not stopped, afterwards the net is freed in
net_drop_ns(); While cp_conn_w rds_connect_worker() will call rds_tcp_conn_path_connect()
and reference 'net' which has already been freed.
In rds_tcp_conn_path_connect(), rds_tcp_set_callbacks() will set t_sock = sock before
sock->ops->connect, but if connect() is failed, it will call
rds_tcp_restore_callbacks() and set t_sock = NULL, if connect is always
failed, rds_connect_worker() will try to reconnect all the time, so
rds_tcp_kill_sock() will never to cancel worker cp_conn_w and free the
connections.
Therefore, the condition !tc->t_sock is not needed if it is going to do
cleanup_net->rds_tcp_exit_net->rds_tcp_kill_sock, because tc->t_sock is always
NULL, and there is on other path to cancel cp_conn_w and free
connection. So this patch is to fix this.
rds_tcp_kill_sock():
...
if (net != c_net || !tc->t_sock)
...
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
==================================================================
BUG: KASAN: use-after-free in inet_create+0xbcc/0xd28
net/ipv4/af_inet.c:340
Read of size 4 at addr
ffff8003496a4684 by task kworker/u8:4/3721
CPU: 3 PID: 3721 Comm: kworker/u8:4 Not tainted 5.1.0 #11
Hardware name: linux,dummy-virt (DT)
Workqueue: krdsd rds_connect_worker
Call trace:
dump_backtrace+0x0/0x3c0 arch/arm64/kernel/time.c:53
show_stack+0x28/0x38 arch/arm64/kernel/traps.c:152
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x120/0x188 lib/dump_stack.c:113
print_address_description+0x68/0x278 mm/kasan/report.c:253
kasan_report_error mm/kasan/report.c:351 [inline]
kasan_report+0x21c/0x348 mm/kasan/report.c:409
__asan_report_load4_noabort+0x30/0x40 mm/kasan/report.c:429
inet_create+0xbcc/0xd28 net/ipv4/af_inet.c:340
__sock_create+0x4f8/0x770 net/socket.c:1276
sock_create_kern+0x50/0x68 net/socket.c:1322
rds_tcp_conn_path_connect+0x2b4/0x690 net/rds/tcp_connect.c:114
rds_connect_worker+0x108/0x1d0 net/rds/threads.c:175
process_one_work+0x6e8/0x1700 kernel/workqueue.c:2153
worker_thread+0x3b0/0xdd0 kernel/workqueue.c:2296
kthread+0x2f0/0x378 kernel/kthread.c:255
ret_from_fork+0x10/0x18 arch/arm64/kernel/entry.S:1117
Allocated by task 687:
save_stack mm/kasan/kasan.c:448 [inline]
set_track mm/kasan/kasan.c:460 [inline]
kasan_kmalloc+0xd4/0x180 mm/kasan/kasan.c:553
kasan_slab_alloc+0x14/0x20 mm/kasan/kasan.c:490
slab_post_alloc_hook mm/slab.h:444 [inline]
slab_alloc_node mm/slub.c:2705 [inline]
slab_alloc mm/slub.c:2713 [inline]
kmem_cache_alloc+0x14c/0x388 mm/slub.c:2718
kmem_cache_zalloc include/linux/slab.h:697 [inline]
net_alloc net/core/net_namespace.c:384 [inline]
copy_net_ns+0xc4/0x2d0 net/core/net_namespace.c:424
create_new_namespaces+0x300/0x658 kernel/nsproxy.c:107
unshare_nsproxy_namespaces+0xa0/0x198 kernel/nsproxy.c:206
ksys_unshare+0x340/0x628 kernel/fork.c:2577
__do_sys_unshare kernel/fork.c:2645 [inline]
__se_sys_unshare kernel/fork.c:2643 [inline]
__arm64_sys_unshare+0x38/0x58 kernel/fork.c:2643
__invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
invoke_syscall arch/arm64/kernel/syscall.c:47 [inline]
el0_svc_common+0x168/0x390 arch/arm64/kernel/syscall.c:83
el0_svc_handler+0x60/0xd0 arch/arm64/kernel/syscall.c:129
el0_svc+0x8/0xc arch/arm64/kernel/entry.S:960
Freed by task 264:
save_stack mm/kasan/kasan.c:448 [inline]
set_track mm/kasan/kasan.c:460 [inline]
__kasan_slab_free+0x114/0x220 mm/kasan/kasan.c:521
kasan_slab_free+0x10/0x18 mm/kasan/kasan.c:528
slab_free_hook mm/slub.c:1370 [inline]
slab_free_freelist_hook mm/slub.c:1397 [inline]
slab_free mm/slub.c:2952 [inline]
kmem_cache_free+0xb8/0x3a8 mm/slub.c:2968
net_free net/core/net_namespace.c:400 [inline]
net_drop_ns.part.6+0x78/0x90 net/core/net_namespace.c:407
net_drop_ns net/core/net_namespace.c:406 [inline]
cleanup_net+0x53c/0x6d8 net/core/net_namespace.c:569
process_one_work+0x6e8/0x1700 kernel/workqueue.c:2153
worker_thread+0x3b0/0xdd0 kernel/workqueue.c:2296
kthread+0x2f0/0x378 kernel/kthread.c:255
ret_from_fork+0x10/0x18 arch/arm64/kernel/entry.S:1117
The buggy address belongs to the object at
ffff8003496a3f80
which belongs to the cache net_namespace of size 7872
The buggy address is located 1796 bytes inside of
7872-byte region [
ffff8003496a3f80,
ffff8003496a5e40)
The buggy address belongs to the page:
page:
ffff7e000d25a800 count:1 mapcount:0 mapping:
ffff80036ce4b000
index:0x0 compound_mapcount: 0
flags: 0xffffe0000008100(slab|head)
raw:
0ffffe0000008100 dead000000000100 dead000000000200 ffff80036ce4b000
raw:
0000000000000000 0000000080040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8003496a4580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8003496a4600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>
ffff8003496a4680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff8003496a4700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8003496a4780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
Fixes:
467fa15356ac("RDS-TCP: Support multiple RDS-TCP listen endpoints, one per netns.")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Eric Dumazet [Wed, 27 Mar 2019 15:21:30 +0000 (08:21 -0700)]
netns: provide pure entropy for net_hash_mix()
[ Upstream commit
355b98553789b646ed97ad801a619ff898471b92 ]
net_hash_mix() currently uses kernel address of a struct net,
and is used in many places that could be used to reveal this
address to a patient attacker, thus defeating KASLR, for
the typical case (initial net namespace, &init_net is
not dynamically allocated)
I believe the original implementation tried to avoid spending
too many cycles in this function, but security comes first.
Also provide entropy regardless of CONFIG_NET_NS.
Fixes:
0b4419162aa6 ("netns: introduce the net_hash_mix "salt" for hashes")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Amit Klein <aksecurity@gmail.com>
Reported-by: Benny Pinkas <benny@pinkas.net>
Cc: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Artemy Kovalyov [Tue, 19 Mar 2019 09:24:38 +0000 (11:24 +0200)]
net/mlx5: Decrease default mr cache size
[ Upstream commit
e8b26b2135dedc0284490bfeac06dfc4418d0105 ]
Delete initialization of high order entries in mr cache to decrease initial
memory footprint. When required, the administrator can populate the
entries with memory keys via the /sys interface.
This approach is very helpful to significantly reduce the per HW function
memory footprint in virtualization environments such as SRIOV.
Fixes:
9603b61de1ee ("mlx5: Move pci device handling from mlx5_ib to mlx5_core")
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reported-by: Shalom Toledo <shalomt@mellanox.com>
Acked-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Steffen Klassert [Tue, 2 Apr 2019 06:16:03 +0000 (08:16 +0200)]
net-gro: Fix GRO flush when receiving a GSO packet.
[ Upstream commit
0ab03f353d3613ea49d1f924faf98559003670a8 ]
Currently we may merge incorrectly a received GSO packet
or a packet with frag_list into a packet sitting in the
gro_hash list. skb_segment() may crash case because
the assumptions on the skb layout are not met.
The correct behaviour would be to flush the packet in the
gro_hash list and send the received GSO packet directly
afterwards. Commit
d61d072e87c8e ("net-gro: avoid reorders")
sets NAPI_GRO_CB(skb)->flush in this case, but this is not
checked before merging. This patch makes sure to check this
flag and to not merge in that case.
Fixes:
d61d072e87c8e ("net-gro: avoid reorders")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Li RongQing [Fri, 29 Mar 2019 01:18:02 +0000 (09:18 +0800)]
net: ethtool: not call vzalloc for zero sized memory request
[ Upstream commit
3d8830266ffc28c16032b859e38a0252e014b631 ]
NULL or ZERO_SIZE_PTR will be returned for zero sized memory
request, and derefencing them will lead to a segfault
so it is unnecessory to call vzalloc for zero sized memory
request and not call functions which maybe derefence the
NULL allocated memory
this also fixes a possible memory leak if phy_ethtool_get_stats
returns error, memory should be freed before exit
Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Wang Li <wangli39@baidu.com>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Jiri Slaby [Fri, 29 Mar 2019 11:19:46 +0000 (12:19 +0100)]
kcm: switch order of device registration to fix a crash
[ Upstream commit
3c446e6f96997f2a95bf0037ef463802162d2323 ]
When kcm is loaded while many processes try to create a KCM socket, a
crash occurs:
BUG: unable to handle kernel NULL pointer dereference at
000000000000000e
IP: mutex_lock+0x27/0x40 kernel/locking/mutex.c:240
PGD
8000000016ef2067 P4D
8000000016ef2067 PUD
3d6e9067 PMD 0
Oops: 0002 [#1] SMP KASAN PTI
CPU: 0 PID: 7005 Comm: syz-executor.5 Not tainted 4.12.14-396-default #1 SLE15-SP1 (unreleased)
RIP: 0010:mutex_lock+0x27/0x40 kernel/locking/mutex.c:240
RSP: 0018:
ffff88000d487a00 EFLAGS:
00010246
RAX:
0000000000000000 RBX:
000000000000000e RCX:
1ffff100082b0719
...
CR2:
000000000000000e CR3:
000000004b1bc003 CR4:
0000000000060ef0
Call Trace:
kcm_create+0x600/0xbf0 [kcm]
__sock_create+0x324/0x750 net/socket.c:1272
...
This is due to race between sock_create and unfinished
register_pernet_device. kcm_create tries to do "net_generic(net,
kcm_net_id)". but kcm_net_id is not initialized yet.
So switch the order of the two to close the race.
This can be reproduced with mutiple processes doing socket(PF_KCM, ...)
and one process doing module removal.
Fixes:
ab7ac4eb9832 ("kcm: Kernel Connection Multiplexor module")
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Lorenzo Bianconi [Thu, 4 Apr 2019 14:37:53 +0000 (16:37 +0200)]
ipv6: sit: reset ip header pointer in ipip6_rcv
[ Upstream commit
bb9bd814ebf04f579be466ba61fc922625508807 ]
ipip6 tunnels run iptunnel_pull_header on received skbs. This can
determine the following use-after-free accessing iph pointer since
the packet will be 'uncloned' running pskb_expand_head if it is a
cloned gso skb (e.g if the packet has been sent though a veth device)
[ 706.369655] BUG: KASAN: use-after-free in ipip6_rcv+0x1678/0x16e0 [sit]
[ 706.449056] Read of size 1 at addr
ffffe01b6bd855f5 by task ksoftirqd/1/=
[ 706.669494] Hardware name: HPE ProLiant m400 Server/ProLiant m400 Server, BIOS U02 08/19/2016
[ 706.771839] Call trace:
[ 706.801159] dump_backtrace+0x0/0x2f8
[ 706.845079] show_stack+0x24/0x30
[ 706.884833] dump_stack+0xe0/0x11c
[ 706.925629] print_address_description+0x68/0x260
[ 706.982070] kasan_report+0x178/0x340
[ 707.025995] __asan_report_load1_noabort+0x30/0x40
[ 707.083481] ipip6_rcv+0x1678/0x16e0 [sit]
[ 707.132623] tunnel64_rcv+0xd4/0x200 [tunnel4]
[ 707.185940] ip_local_deliver_finish+0x3b8/0x988
[ 707.241338] ip_local_deliver+0x144/0x470
[ 707.289436] ip_rcv_finish+0x43c/0x14b0
[ 707.335447] ip_rcv+0x628/0x1138
[ 707.374151] __netif_receive_skb_core+0x1670/0x2600
[ 707.432680] __netif_receive_skb+0x28/0x190
[ 707.482859] process_backlog+0x1d0/0x610
[ 707.529913] net_rx_action+0x37c/0xf68
[ 707.574882] __do_softirq+0x288/0x1018
[ 707.619852] run_ksoftirqd+0x70/0xa8
[ 707.662734] smpboot_thread_fn+0x3a4/0x9e8
[ 707.711875] kthread+0x2c8/0x350
[ 707.750583] ret_from_fork+0x10/0x18
[ 707.811302] Allocated by task 16982:
[ 707.854182] kasan_kmalloc.part.1+0x40/0x108
[ 707.905405] kasan_kmalloc+0xb4/0xc8
[ 707.948291] kasan_slab_alloc+0x14/0x20
[ 707.994309] __kmalloc_node_track_caller+0x158/0x5e0
[ 708.053902] __kmalloc_reserve.isra.8+0x54/0xe0
[ 708.108280] __alloc_skb+0xd8/0x400
[ 708.150139] sk_stream_alloc_skb+0xa4/0x638
[ 708.200346] tcp_sendmsg_locked+0x818/0x2b90
[ 708.251581] tcp_sendmsg+0x40/0x60
[ 708.292376] inet_sendmsg+0xf0/0x520
[ 708.335259] sock_sendmsg+0xac/0xf8
[ 708.377096] sock_write_iter+0x1c0/0x2c0
[ 708.424154] new_sync_write+0x358/0x4a8
[ 708.470162] __vfs_write+0xc4/0xf8
[ 708.510950] vfs_write+0x12c/0x3d0
[ 708.551739] ksys_write+0xcc/0x178
[ 708.592533] __arm64_sys_write+0x70/0xa0
[ 708.639593] el0_svc_handler+0x13c/0x298
[ 708.686646] el0_svc+0x8/0xc
[ 708.739019] Freed by task 17:
[ 708.774597] __kasan_slab_free+0x114/0x228
[ 708.823736] kasan_slab_free+0x10/0x18
[ 708.868703] kfree+0x100/0x3d8
[ 708.905320] skb_free_head+0x7c/0x98
[ 708.948204] skb_release_data+0x320/0x490
[ 708.996301] pskb_expand_head+0x60c/0x970
[ 709.044399] __iptunnel_pull_header+0x3b8/0x5d0
[ 709.098770] ipip6_rcv+0x41c/0x16e0 [sit]
[ 709.146873] tunnel64_rcv+0xd4/0x200 [tunnel4]
[ 709.200195] ip_local_deliver_finish+0x3b8/0x988
[ 709.255596] ip_local_deliver+0x144/0x470
[ 709.303692] ip_rcv_finish+0x43c/0x14b0
[ 709.349705] ip_rcv+0x628/0x1138
[ 709.388413] __netif_receive_skb_core+0x1670/0x2600
[ 709.446943] __netif_receive_skb+0x28/0x190
[ 709.497120] process_backlog+0x1d0/0x610
[ 709.544169] net_rx_action+0x37c/0xf68
[ 709.589131] __do_softirq+0x288/0x1018
[ 709.651938] The buggy address belongs to the object at
ffffe01b6bd85580
which belongs to the cache kmalloc-1024 of size 1024
[ 709.804356] The buggy address is located 117 bytes inside of
1024-byte region [
ffffe01b6bd85580,
ffffe01b6bd85980)
[ 709.946340] The buggy address belongs to the page:
[ 710.003824] page:
ffff7ff806daf600 count:1 mapcount:0 mapping:
ffffe01c4001f600 index:0x0
[ 710.099914] flags: 0xfffff8000000100(slab)
[ 710.149059] raw:
0fffff8000000100 dead000000000100 dead000000000200 ffffe01c4001f600
[ 710.242011] raw:
0000000000000000 0000000000380038 00000001ffffffff 0000000000000000
[ 710.334966] page dumped because: kasan: bad access detected
Fix it resetting iph pointer after iptunnel_pull_header
Fixes:
a09a4c8dd1ec ("tunnels: Remove encapsulation offloads on decap")
Tested-by: Jianlin Shi <jishi@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Junwei Hu [Tue, 2 Apr 2019 11:38:04 +0000 (19:38 +0800)]
ipv6: Fix dangling pointer when ipv6 fragment
[ Upstream commit
ef0efcd3bd3fd0589732b67fb586ffd3c8705806 ]
At the beginning of ip6_fragment func, the prevhdr pointer is
obtained in the ip6_find_1stfragopt func.
However, all the pointers pointing into skb header may change
when calling skb_checksum_help func with
skb->ip_summed = CHECKSUM_PARTIAL condition.
The prevhdr pointe will be dangling if it is not reloaded after
calling __skb_linearize func in skb_checksum_help func.
Here, I add a variable, nexthdr_offset, to evaluate the offset,
which does not changes even after calling __skb_linearize func.
Fixes:
405c92f7a541 ("ipv6: add defensive check for CHECKSUM_PARTIAL skbs in ip_fragment")
Signed-off-by: Junwei Hu <hujunwei4@huawei.com>
Reported-by: Wenhao Zhang <zhangwenhao8@huawei.com>
Reported-by: syzbot+e8ce541d095e486074fc@syzkaller.appspotmail.com
Reviewed-by: Zhiqiang Liu <liuzhiqiang26@huawei.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Sheena Mira-ato [Mon, 1 Apr 2019 00:04:42 +0000 (13:04 +1300)]
ip6_tunnel: Match to ARPHRD_TUNNEL6 for dev type
[ Upstream commit
b2e54b09a3d29c4db883b920274ca8dca4d9f04d ]
The device type for ip6 tunnels is set to
ARPHRD_TUNNEL6. However, the ip4ip6_err function
is expecting the device type of the tunnel to be
ARPHRD_TUNNEL. Since the device types do not
match, the function exits and the ICMP error
packet is not sent to the originating host. Note
that the device type for IPv4 tunnels is set to
ARPHRD_TUNNEL.
Fix is to expect a tunnel device type of
ARPHRD_TUNNEL6 instead. Now the tunnel device
type matches and the ICMP error packet is sent
to the originating host.
Signed-off-by: Sheena Mira-ato <sheena.mira-ato@alliedtelesis.co.nz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Thomas Falcon [Thu, 4 Apr 2019 23:58:26 +0000 (18:58 -0500)]
ibmvnic: Fix completion structure initialization
[ Upstream commit
bbd669a868bba591ffd38b7bc75a7b361bb54b04 ]
Fix device initialization completion handling for vNIC adapters.
Initialize the completion structure on probe and reinitialize when needed.
This also fixes a race condition during kdump where the driver can attempt
to access the completion struct before it is initialized:
Unable to handle kernel paging request for data at address 0x00000000
Faulting instruction address: 0xc0000000081acbe0
Oops: Kernel access of bad area, sig: 11 [#1]
LE SMP NR_CPUS=2048 NUMA pSeries
Modules linked in: ibmvnic(+) ibmveth sunrpc overlay squashfs loop
CPU: 19 PID: 301 Comm: systemd-udevd Not tainted 4.18.0-64.el8.ppc64le #1
NIP:
c0000000081acbe0 LR:
c0000000081ad964 CTR:
c0000000081ad900
REGS:
c000000027f3f990 TRAP: 0300 Not tainted (4.18.0-64.el8.ppc64le)
MSR:
800000010280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE,TM[E]> CR:
28228288 XER:
00000006
CFAR:
c000000008008934 DAR:
0000000000000000 DSISR:
40000000 IRQMASK: 1
GPR00:
c0000000081ad964 c000000027f3fc10 c0000000095b5800 c0000000221b4e58
GPR04:
0000000000000003 0000000000000001 000049a086918581 00000000000000d4
GPR08:
0000000000000007 0000000000000000 ffffffffffffffe8 d0000000014dde28
GPR12:
c0000000081ad900 c000000009a00c00 0000000000000001 0000000000000100
GPR16:
0000000000000038 0000000000000007 c0000000095e2230 0000000000000006
GPR20:
0000000000400140 0000000000000001 c00000000910c880 0000000000000000
GPR24:
0000000000000000 0000000000000006 0000000000000000 0000000000000003
GPR28:
0000000000000001 0000000000000001 c0000000221b4e60 c0000000221b4e58
NIP [
c0000000081acbe0] __wake_up_locked+0x50/0x100
LR [
c0000000081ad964] complete+0x64/0xa0
Call Trace:
[
c000000027f3fc10] [
c000000027f3fc60] 0xc000000027f3fc60 (unreliable)
[
c000000027f3fc60] [
c0000000081ad964] complete+0x64/0xa0
[
c000000027f3fca0] [
d0000000014dad58] ibmvnic_handle_crq+0xce0/0x1160 [ibmvnic]
[
c000000027f3fd50] [
d0000000014db270] ibmvnic_tasklet+0x98/0x130 [ibmvnic]
[
c000000027f3fda0] [
c00000000813f334] tasklet_action_common.isra.3+0xc4/0x1a0
[
c000000027f3fe00] [
c000000008cd13f4] __do_softirq+0x164/0x400
[
c000000027f3fef0] [
c00000000813ed64] irq_exit+0x184/0x1c0
[
c000000027f3ff20] [
c0000000080188e8] __do_irq+0xb8/0x210
[
c000000027f3ff90] [
c00000000802d0a4] call_do_irq+0x14/0x24
[
c000000026a5b010] [
c000000008018adc] do_IRQ+0x9c/0x130
[
c000000026a5b060] [
c000000008008ce4] hardware_interrupt_common+0x114/0x120
Signed-off-by: Thomas Falcon <tlfalcon@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Haiyang Zhang [Thu, 28 Mar 2019 19:40:36 +0000 (19:40 +0000)]
hv_netvsc: Fix unwanted wakeup after tx_disable
[ Upstream commit
1b704c4a1ba95574832e730f23817b651db2aa59 ]
After queue stopped, the wakeup mechanism may wake it up again
when ring buffer usage is lower than a threshold. This may cause
send path panic on NULL pointer when we stopped all tx queues in
netvsc_detach and start removing the netvsc device.
This patch fix it by adding a tx_disable flag to prevent unwanted
queue wakeup.
Fixes:
7b2ee50c0cd5 ("hv_netvsc: common detach logic")
Reported-by: Mohammed Gamal <mgamal@redhat.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Breno Leitao [Mon, 8 Apr 2019 06:32:38 +0000 (16:32 +1000)]
powerpc/tm: Limit TM code inside PPC_TRANSACTIONAL_MEM
commit
897bc3df8c5aebb54c32d831f917592e873d0559 upstream.
Commit
e1c3743e1a20 ("powerpc/tm: Set MSR[TS] just prior to recheckpoint")
moved a code block around and this block uses a 'msr' variable outside of
the CONFIG_PPC_TRANSACTIONAL_MEM, however the 'msr' variable is declared
inside a CONFIG_PPC_TRANSACTIONAL_MEM block, causing a possible error when
CONFIG_PPC_TRANSACTION_MEM is not defined.
error: 'msr' undeclared (first use in this function)
This is not causing a compilation error in the mainline kernel, because
'msr' is being used as an argument of MSR_TM_ACTIVE(), which is defined as
the following when CONFIG_PPC_TRANSACTIONAL_MEM is *not* set:
#define MSR_TM_ACTIVE(x) 0
This patch just fixes this issue avoiding the 'msr' variable usage outside
the CONFIG_PPC_TRANSACTIONAL_MEM block, avoiding trusting in the
MSR_TM_ACTIVE() definition.
Cc: stable@vger.kernel.org
Reported-by: Christoph Biedl <linux-kernel.bfrz@manchmal.in-ulm.de>
Fixes:
e1c3743e1a20 ("powerpc/tm: Set MSR[TS] just prior to recheckpoint")
Signed-off-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Yan Zhao [Wed, 27 Mar 2019 04:55:45 +0000 (00:55 -0400)]
drm/i915/gvt: do not let pin count of shadow mm go negative
[ Upstream commit
663a50ceac75c2208d2ad95365bc8382fd42f44d ]
shadow mm's pin count got increased in workload preparation phase, which
is after workload scanning.
it will get decreased in complete_current_workload() anyway after
workload completion.
Sometimes, if a workload meets a scanning error, its shadow mm pin count
will not get increased but will get decreased in the end.
This patch lets shadow mm's pin count not go below 0.
Fixes:
2707e4446688 ("drm/i915/gvt: vGPU graphics memory virtualization")
Cc: zhenyuw@linux.intel.com
Cc: stable@vger.kernel.org #4.14+
Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Jim Mattson [Mon, 26 Nov 2018 19:22:32 +0000 (11:22 -0800)]
kvm: nVMX: NMI-window and interrupt-window exiting should wake L2 from HLT
[ Upstream commit
9ebdfe5230f2e50e3ba05c57723a06e90946815a ]
According to the SDM, "NMI-window exiting" VM-exits wake a logical
processor from the same inactive states as would an NMI and
"interrupt-window exiting" VM-exits wake a logical processor from the
same inactive states as would an external interrupt. Specifically, they
wake a logical processor from the shutdown state and from the states
entered using the HLT and MWAIT instructions.
Fixes:
6dfacadd5858 ("KVM: nVMX: Add support for activity state HLT")
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Suggested-by: Sean Christopherson <sean.j.christopherson@intel.com>
[Squashed comments of two Jim's patches and used the simplified code
hunk provided by Sean. - Radim]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Greg Kroah-Hartman [Fri, 5 Apr 2019 20:33:17 +0000 (22:33 +0200)]
Linux 4.19.34
Andrea Righi [Thu, 6 Dec 2018 09:56:48 +0000 (10:56 +0100)]
kprobes/x86: Blacklist non-attachable interrupt functions
[ Upstream commit
a50480cb6d61d5c5fc13308479407b628b6bc1c5 ]
These interrupt functions are already non-attachable by kprobes.
Blacklist them explicitly so that they can show up in
/sys/kernel/debug/kprobes/blacklist and tools like BCC can use this
additional information.
Signed-off-by: Andrea Righi <righi.andrea@gmail.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: David S. Miller <davem@davemloft.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yonghong Song <yhs@fb.com>
Link: http://lkml.kernel.org/r/20181206095648.GA8249@Dell
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Coly Li [Sat, 9 Feb 2019 04:53:06 +0000 (12:53 +0800)]
bcache: fix potential div-zero error of writeback_rate_p_term_inverse
[ Upstream commit
5b5fd3c94eef69dcfaa8648198e54c92e5687d6d ]
Current code already uses d_strtoul_nonzero() to convert input string
to an unsigned integer, to make sure writeback_rate_p_term_inverse
won't be zero value. But overflow may happen when converting input
string to an unsigned integer value by d_strtoul_nonzero(), then
dc->writeback_rate_p_term_inverse can still be set to 0 even if the
sysfs file input value is not zero, e.g.
4294967296 (a.k.a UINT_MAX+1).
If dc->writeback_rate_p_term_inverse is set to 0, it might cause a
dev-zero error in following code from __update_writeback_rate(),
int64_t proportional_scaled =
div_s64(error, dc->writeback_rate_p_term_inverse);
This patch replaces d_strtoul_nonzero() by sysfs_strtoul_clamp() and
limit the value range in [1, UINT_MAX]. Then the unsigned integer
overflow and dev-zero error can be avoided.
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Hans de Goede [Mon, 7 Jan 2019 16:08:21 +0000 (17:08 +0100)]
ACPI / video: Extend chassis-type detection with a "Lunch Box" check
[ Upstream commit
d693c008e3ca04db5916ff72e68ce661888a913b ]
Commit
53fa1f6e8a59 ("ACPI / video: Only default only_lcd to true on
Win8-ready _desktops_") introduced chassis type detection, limiting the
lcd_only check for the backlight to devices where the chassis-type
indicates their is no builtin LCD panel.
The purpose of the lcd_only check is to avoid advertising a backlight
interface on desktops, since skylake and newer machines seem to always
have a backlight interface even if there is no LCD panel. The limiting
of this check to desktops only was done to avoid breaking backlight
support on some laptops which do not have the lcd flag set.
The Fujitsu ESPRIMO Q910 which is a compact (NUC like) desktop machine
has a chassis type of 0x10 aka "Lunch Box". Without the lcd_only check
we end up falsely advertising backlight/brightness control on this
device. This commit extend the dmi_is_desktop check to return true
for type 0x10 to fix this.
Fixes:
53fa1f6e8a59 ("ACPI / video: Only default only_lcd to true ...")
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Nathan Chancellor [Fri, 8 Mar 2019 04:02:39 +0000 (21:02 -0700)]
net: stmmac: Avoid one more sometimes uninitialized Clang warning
[ Upstream commit
1f5d861f7fefa971b2c6e766f77932c86419a319 ]
When building with -Wsometimes-uninitialized, Clang warns:
drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c:111:2: error: variable
'ns' is used uninitialized whenever 'if' condition is false
[-Werror,-Wsometimes-uninitialized]
drivers/net/ethernet/stmicro/stmmac/stmmac_ptp.c:111:2: error: variable
'ns' is used uninitialized whenever '&&' condition is false
[-Werror,-Wsometimes-uninitialized]
Clang is concerned with the use of stmmac_do_void_callback (which
stmmac_get_systime wraps), as it may fail to initialize these values if
the if condition was ever false (meaning the callback doesn't exist).
It's not wrong because the callback is what initializes ns. While it's
unlikely that the callback is going to disappear at some point and make
that condition false, we can easily avoid this warning by zero
initializing the variable.
Link: https://github.com/ClangBuiltLinux/linux/issues/384
Fixes:
df103170854e ("net: stmmac: Avoid sometimes uninitialized Clang warnings")
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Ville Syrjälä [Fri, 28 Sep 2018 18:03:59 +0000 (21:03 +0300)]
drm/dp/mst: Configure no_stop_bit correctly for remote i2c xfers
[ Upstream commit
c978ae9bde582e82a04c63a4071701691dd8b35c ]
We aren't supposed to force a stop+start between every i2c msg
when performing multi message transfers. This should eg. cause
the DDC segment address to be reset back to 0 between writing
the segment address and reading the actual EDID extension block.
To quote the E-DDC spec:
"... this standard requires that the segment pointer be
reset to 00h when a NO ACK or a STOP condition is received."
Since we're going to touch this might as well consult the
I2C_M_STOP flag to determine whether we want to force the stop
or not.
Cc: Brian Vincent <brainn@gmail.com>
References: https://bugs.freedesktop.org/show_bug.cgi?id=108081
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180928180403.22499-1-ville.syrjala@linux.intel.com
Reviewed-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Hans de Goede [Fri, 4 Jan 2019 02:10:45 +0000 (18:10 -0800)]
Input: soc_button_array - fix mapping of the 5th GPIO in a PNP0C40 device
[ Upstream commit
e9eb788f9442d1b5d93efdb30c3be071ce8a22b1 ]
The Microsoft documenation for the PNP0C40 device aka the
"Windows-compatible button array" describes the 5th GpioInt listed in
the resources as: '5. Interrupt corresponding to the "Rotation Lock"
button, if supported'.
Notice this describes the 5th entry as a button while we sofar have been
mapping it to EV_SW, SW_ROTATE_LOCK. On my Point of View TAB P1006W-232
which actually comes with a rotation-lock button, the button indeed is a
button and not a slider/switch. An image search for other Windows tablets
has found 2 more models with a rotation-lock button and on both of those
it too is a push-button and not a slider/switch.
Further evidence can be found in the HUT extension HUTRR52 from Microsoft
which adds rotation lock support to the HUT, which describes 2 different
usages: "0xC9 System Display Rotation Lock Button" and
"0xCA System Display Rotation Lock Slider Switch" note that switch is seen
as a separate thing here and the non switch wording is an exact match for
the "Windows-compatible button array" spec wording.
TL;DR: our current mapping of the 5th GPIO to SW_ROTATE_LOCK is wrong
because the 5th GPIO is for a push-button not a switch.
This commit fixes this by maping the 5th GPIO to KEY_ROTATE_LOCK_TOGGLE.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Ben Dooks [Wed, 21 Nov 2018 16:13:19 +0000 (16:13 +0000)]
dmaengine: tegra: avoid overflow of byte tracking
[ Upstream commit
e486df39305864604b7e25f2a95d51039517ac57 ]
The dma_desc->bytes_transferred counter tracks the number of bytes
moved by the DMA channel. This is then used to calculate the information
passed back in the in the tegra_dma_tx_status callback, which is usually
fine.
When the DMA channel is configured as continous, then the bytes_transferred
counter will increase over time and eventually overflow to become negative
so the residue count will become invalid and the ALSA sound-dma code will
report invalid hardware pointer values to the application. This results in
some users becoming confused about the playout position and putting audio
data in the wrong place.
To fix this issue, always ensure the bytes_transferred field is modulo the
size of the request. We only do this for the case of the cyclic transfer
done ISR as anyone attempting to move 2GiB of DMA data in one transfer
is unlikely.
Note, we don't fix the issue that we should /never/ transfer a negative
number of bytes so we could make those fields unsigned.
Reviewed-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Katsuhiro Suzuki [Sat, 22 Dec 2018 16:42:49 +0000 (01:42 +0900)]
clk: rockchip: fix frac settings of GPLL clock for rk3328
[ Upstream commit
a0e447b0c50240a90ab84b7126b3c06b0bab4adc ]
This patch fixes settings of GPLL frequency in fractional mode for
rk3328. In this mode, FOUTVCO is calcurated by following formula:
FOUTVCO = FREF * FBDIV / REFDIV + ((FREF * FRAC / REFDIV) >> 24)
The problem is in FREF * FRAC >> 24 term. This result always lacks
one from target value is specified by rate member. For example first
itme of rk3328_pll_frac_rate originally has
- rate :
1016064000
- refdiv: 3
- fbdiv : 127
- frac : 134217
- FREF * FBDIV / REFDIV =
1016000000
- (FREF * FRAC / REFDIV) >> 24 = 63999
Thus calculated rate is
1016063999. It seems wrong.
If frac has 134218 (it is increased 1 from original value), second
term is 64000. All other items have same situation. So this patch
adds 1 to frac member in all items of rk3328_pll_frac_rate.
Signed-off-by: Katsuhiro Suzuki <katsuhiro@katsuster.net>
Acked-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Jerome Brunet [Fri, 21 Dec 2018 16:02:36 +0000 (17:02 +0100)]
clk: meson: clean-up clock registration
[ Upstream commit
8d9981efbcab066d17af4d3c85c169200f6f78df ]
Order, ids and size between the table of regmap clocks and the onecell
data table could be different.
Set regmap pointer in all the regmap clocks before starting the
registration using the onecell data, to make sure we don't
get into an incoherent situation.
Signed-off-by: Jerome Brunet <jbrunet@baylibre.com>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Link: https://lkml.kernel.org/r/20181221160239.26265-3-jbrunet@baylibre.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Peter Wu [Sun, 23 Dec 2018 00:55:07 +0000 (01:55 +0100)]
drm/fb-helper: fix leaks in error path of drm_fb_helper_fbdev_setup
[ Upstream commit
00eb5b0da8d27b3c944bfc959c3344d665caae26 ]
After drm_fb_helper_fbdev_setup calls drm_fb_helper_init,
"dev->fb_helper" will be initialized (and thus drm_fb_helper_fini will
have some effect). After that, drm_fb_helper_initial_config is called
which may call the "fb_probe" driver callback.
This driver callback may call drm_fb_helper_defio_init (as is done by
drm_fb_helper_generic_probe) or set a framebuffer (as is done by bochs)
as documented. These are normally cleaned up on exit by
drm_fb_helper_fbdev_teardown which also calls drm_fb_helper_fini.
If an error occurs after "fb_probe", but before setup is complete, then
calling just drm_fb_helper_fini will leak resources. This was triggered
by
df2052cc922 ("bochs: convert to drm_fb_helper_fbdev_setup/teardown"):
[ 50.008030] bochsdrmfb: enable CONFIG_FB_LITTLE_ENDIAN to support this framebuffer
[ 50.009436] bochs-drm 0000:00:02.0: [drm:drm_fb_helper_fbdev_setup] *ERROR* fbdev: Failed to set configuration (ret=-38)
[ 50.011456] [drm] Initialized bochs-drm 1.0.0
20130925 for 0000:00:02.0 on minor 2
[ 50.013604] WARNING: CPU: 1 PID: 1 at drivers/gpu/drm/drm_mode_config.c:477 drm_mode_config_cleanup+0x280/0x2a0
[ 50.016175] CPU: 1 PID: 1 Comm: swapper/0 Tainted: G T 4.20.0-rc7 #1
[ 50.017732] EIP: drm_mode_config_cleanup+0x280/0x2a0
...
[ 50.023155] Call Trace:
[ 50.023155] ? bochs_kms_fini+0x1e/0x30
[ 50.023155] ? bochs_unload+0x18/0x40
This can be reproduced with QEMU and CONFIG_FB_LITTLE_ENDIAN=n.
Link: https://lkml.kernel.org/r/20181221083226.GI23332@shao2-debian
Link: https://lkml.kernel.org/r/20181223004315.GA11455@al
Fixes:
8741216396b2 ("drm/fb-helper: Add drm_fb_helper_fbdev_setup/teardown()")
Reported-by: kernel test robot <rong.a.chen@intel.com>
Cc: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Peter Wu <peter@lekensteyn.nl>
Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
Signed-off-by: Noralf Trønnes <noralf@tronnes.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20181223005507.28328-1-peter@lekensteyn.nl
Signed-off-by: Sasha Levin <sashal@kernel.org>
Rafael Ávila de Espíndola [Wed, 19 Dec 2018 19:01:43 +0000 (11:01 -0800)]
x86/build: Mark per-CPU symbols as absolute explicitly for LLD
[ Upstream commit
d071ae09a4a1414c1433d5ae9908959a7325b0ad ]
Accessing per-CPU variables is done by finding the offset of the
variable in the per-CPU block and adding it to the address of the
respective CPU's block.
Section 3.10.8 of ld.bfd's documentation states:
For expressions involving numbers, relative addresses and absolute
addresses, ld follows these rules to evaluate terms:
Other binary operations, that is, between two relative addresses
not in the same section, or between a relative address and an
absolute address, first convert any non-absolute term to an
absolute address before applying the operator."
Note that LLVM's linker does not adhere to the GNU ld's implementation
and as such requires implicitly-absolute terms to be explicitly marked
as absolute in the linker script. If not, it fails currently with:
ld.lld: error: ./arch/x86/kernel/vmlinux.lds:153: at least one side of the expression must be absolute
ld.lld: error: ./arch/x86/kernel/vmlinux.lds:154: at least one side of the expression must be absolute
Makefile:1040: recipe for target 'vmlinux' failed
This is not a functional change for ld.bfd which converts the term to an
absolute symbol anyways as specified above.
Based on a previous submission by Tri Vo <trong@android.com>.
Reported-by: Dmitry Golovin <dima@golovin.in>
Signed-off-by: Rafael Ávila de Espíndola <rafael@espindo.la>
[ Update commit message per Boris' and Michael's suggestions. ]
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
[ Massage commit message more, fix typos. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
Tested-by: Dmitry Golovin <dima@golovin.in>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Cao Jin <caoj.fnst@cn.fujitsu.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tri Vo <trong@android.com>
Cc: dima@golovin.in
Cc: morbo@google.com
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20181219190145.252035-1-ndesaulniers@google.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Zumeng Chen [Wed, 19 Dec 2018 07:50:29 +0000 (15:50 +0800)]
wlcore: Fix memory leak in case wl12xx_fetch_firmware failure
[ Upstream commit
ba2ffc96321c8433606ceeb85c9e722b8113e5a7 ]
Release fw_status, raw_fw_status, and tx_res_if when wl12xx_fetch_firmware
failed instead of meaningless goto out to avoid the following memory leak
reports(Only the last one listed):
unreferenced object 0xc28a9a00 (size 512):
comm "kworker/0:4", pid 31298, jiffies 2783204 (age 203.290s)
hex dump (first 32 bytes):
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
backtrace:
[<
6624adab>] kmemleak_alloc+0x40/0x74
[<
500ddb31>] kmem_cache_alloc_trace+0x1ac/0x270
[<
db4d731d>] wl12xx_chip_wakeup+0xc4/0x1fc [wlcore]
[<
76c5db53>] wl1271_op_add_interface+0x4a4/0x8f4 [wlcore]
[<
cbf30777>] drv_add_interface+0xa4/0x1a0 [mac80211]
[<
65bac325>] ieee80211_reconfig+0x9c0/0x1644 [mac80211]
[<
2817c80e>] ieee80211_restart_work+0x90/0xc8 [mac80211]
[<
7e1d425a>] process_one_work+0x284/0x42c
[<
55f9432e>] worker_thread+0x2fc/0x48c
[<
abb582c6>] kthread+0x148/0x160
[<
63144b13>] ret_from_fork+0x14/0x2c
[< (null)>] (null)
[<
1f6e7715>] 0xffffffff
Signed-off-by: Zumeng Chen <zumeng.chen@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Hans de Goede [Mon, 7 Jan 2019 13:33:27 +0000 (14:33 +0100)]
brcmfmac: Use firmware_request_nowarn for the clm_blob
[ Upstream commit
4ad0be160544ffbdafb7cec39bb8e6dd0a97317a ]
The linux-firmware brcmfmac firmware files contain an embedded table with
per country allowed channels and strength info.
For recent hardware these versions of the firmware are specially build for
linux-firmware, the firmware files directly available from Cypress rely on
a separate clm_blob file for this info.
For some unknown reason Cypress refuses to provide the standard firmware
files + clm_blob files it uses elsewhere for inclusion into linux-firmware,
instead relying on these special builds with the clm_blob info embedded.
This means that the linux-firmware firmware versions often lag behind,
but I digress.
The brcmfmac driver does support the separate clm_blob file and always
tries to load this. Currently we use request_firmware for this. This means
that on any standard install, using the standard combo of linux-kernel +
linux-firmware, we will get a warning:
"Direct firmware load for ... failed with error -2"
On top of this, brcmfmac itself prints: "no clm_blob available (err=-2),
device may have limited channels available".
This commit switches to firmware_request_nowarn, fixing almost any brcmfmac
device logging the warning (it leaves the brcmfmac info message in place).
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Ondrej Mosnacek [Fri, 21 Dec 2018 20:18:53 +0000 (21:18 +0100)]
selinux: do not override context on context mounts
[ Upstream commit
53e0c2aa9a59a48e3798ef193d573ade85aa80f5 ]
Ignore all selinux_inode_notifysecctx() calls on mounts with SBLABEL_MNT
flag unset. This is achived by returning -EOPNOTSUPP for this case in
selinux_inode_setsecurtity() (because that function should not be called
in such case anyway) and translating this error to 0 in
selinux_inode_notifysecctx().
This fixes behavior of kernfs-based filesystems when mounted with the
'context=' option. Before this patch, if a node's context had been
explicitly set to a non-default value and later the filesystem has been
remounted with the 'context=' option, then this node would show up as
having the manually-set context and not the mount-specified one.
Steps to reproduce:
# mount -t cgroup2 cgroup2 /sys/fs/cgroup/unified
# chcon unconfined_u:object_r:user_home_t:s0 /sys/fs/cgroup/unified/cgroup.stat
# ls -lZ /sys/fs/cgroup/unified
total 0
-r--r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Dec 13 10:41 cgroup.controllers
-rw-r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Dec 13 10:41 cgroup.max.depth
-rw-r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Dec 13 10:41 cgroup.max.descendants
-rw-r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Dec 13 10:41 cgroup.procs
-r--r--r--. 1 root root unconfined_u:object_r:user_home_t:s0 0 Dec 13 10:41 cgroup.stat
-rw-r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Dec 13 10:41 cgroup.subtree_control
-rw-r--r--. 1 root root system_u:object_r:cgroup_t:s0 0 Dec 13 10:41 cgroup.threads
# umount /sys/fs/cgroup/unified
# mount -o context=system_u:object_r:tmpfs_t:s0 -t cgroup2 cgroup2 /sys/fs/cgroup/unified
Result before:
# ls -lZ /sys/fs/cgroup/unified
total 0
-r--r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.controllers
-rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.max.depth
-rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.max.descendants
-rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.procs
-r--r--r--. 1 root root unconfined_u:object_r:user_home_t:s0 0 Dec 13 10:41 cgroup.stat
-rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.subtree_control
-rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.threads
Result after:
# ls -lZ /sys/fs/cgroup/unified
total 0
-r--r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.controllers
-rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.max.depth
-rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.max.descendants
-rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.procs
-r--r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.stat
-rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.subtree_control
-rw-r--r--. 1 root root system_u:object_r:tmpfs_t:s0 0 Dec 13 10:41 cgroup.threads
Signed-off-by: Ondrej Mosnacek <omosnace@redhat.com>
Reviewed-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
George Rimar [Fri, 11 Jan 2019 20:10:12 +0000 (12:10 -0800)]
x86/build: Specify elf_i386 linker emulation explicitly for i386 objects
[ Upstream commit
927185c124d62a9a4d35878d7f6d432a166b74e3 ]
The kernel uses the OUTPUT_FORMAT linker script command in it's linker
scripts. Most of the time, the -m option is passed to the linker with
correct architecture, but sometimes (at least for x86_64) the -m option
contradicts the OUTPUT_FORMAT directive.
Specifically, arch/x86/boot and arch/x86/realmode/rm produce i386 object
files, but are linked with the -m elf_x86_64 linker flag when building
for x86_64.
The GNU linker manpage doesn't explicitly state any tie-breakers between
-m and OUTPUT_FORMAT. But with BFD and Gold linkers, OUTPUT_FORMAT
overrides the emulation value specified with the -m option.
LLVM lld has a different behavior, however. When supplied with
contradicting -m and OUTPUT_FORMAT values it fails with the following
error message:
ld.lld: error: arch/x86/realmode/rm/header.o is incompatible with elf_x86_64
Therefore, just add the correct -m after the incorrect one (it overrides
it), so the linker invocation looks like this:
ld -m elf_x86_64 -z max-page-size=0x200000 -m elf_i386 --emit-relocs -T \
realmode.lds header.o trampoline_64.o stack.o reboot.o -o realmode.elf
This is not a functional change for GNU ld, because (although not
explicitly documented) OUTPUT_FORMAT overrides -m EMULATION.
Tested by building x86_64 kernel with GNU gcc/ld toolchain and booting
it in QEMU.
[ bp: massage and clarify text. ]
Suggested-by: Dmitry Golovin <dima@golovin.in>
Signed-off-by: George Rimar <grimar@accesssoftek.com>
Signed-off-by: Tri Vo <trong@android.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Tested-by: Tri Vo <trong@android.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Michael Matz <matz@suse.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: morbo@google.com
Cc: ndesaulniers@google.com
Cc: ruiu@google.com
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20190111201012.71210-1-trong@android.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Daniel Vetter [Mon, 17 Dec 2018 19:42:58 +0000 (20:42 +0100)]
drm/nouveau: Stop using drm_crtc_force_disable
[ Upstream commit
934c5b32a5e43d8de2ab4f1566f91d7c3bf8cb64 ]
The correct way for legacy drivers to update properties that need to
do a full modeset, is to do a full modeset.
Note that we don't need to call the drm_mode_config_internal helper
because we're not changing any of the refcounted paramters.
v2: Fixup error handling (Ville). Since the old code didn't bother
I decided to just delete it instead of adding even more code for just
error handling.
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com> (v1)
Cc: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20181217194303.14397-2-daniel.vetter@ffwll.ch
Signed-off-by: Sasha Levin <sashal@kernel.org>
Paul Kocialkowski [Fri, 4 Jan 2019 08:56:10 +0000 (09:56 +0100)]
drm: Auto-set allow_fb_modifiers when given modifiers at plane init
[ Upstream commit
890880ddfdbe256083170866e49c87618b706ac7 ]
When drivers pass non-empty lists of modifiers for initializing their
planes, we can infer that they allow framebuffer modifiers and set the
driver's allow_fb_modifiers mode config element.
In case the allow_fb_modifiers element was not set (some drivers tend
to set them after registering planes), the modifiers will still be
registered but won't be available to userspace unless the flag is set
later. However in that case, the IN_FORMATS blob won't be created.
In order to avoid this case and generally reduce the trouble associated
with the flag, always set allow_fb_modifiers when a non-empty list of
format modifiers is passed at plane init.
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190104085610.5829-1-paul.kocialkowski@bootlin.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
Martin Blumenstingl [Sat, 12 Jan 2019 12:59:13 +0000 (13:59 +0100)]
pinctrl: meson: meson8b: add the eth_rxd2 and eth_rxd3 pins
[ Upstream commit
6daae00243e622dd3feec7965bfe421ad6dd317e ]
Gigabit Ethernet requires the Ethernet TXD0..3 and RXD0..3 data lines.
Add the missing eth_rxd2 and eth_rxd3 definitions so we don't have to
rely on the bootloader to set them up correctly.
The vendor u-boot sources for Odroid-C1 use the following Ethernet
pinmux configuration:
SET_CBUS_REG_MASK(PERIPHS_PIN_MUX_6, 0x3f4f);
SET_CBUS_REG_MASK(PERIPHS_PIN_MUX_7, 0xf00000);
This translates to the following pin groups in the mainline kernel:
- register 6 bit 0: eth_rxd1 (DIF_0_P)
- register 6 bit 1: eth_rxd0 (DIF_0_N)
- register 6 bit 2: eth_rx_dv (DIF_1_P)
- register 6 bit 3: eth_rx_clk (DIF_1_N)
- register 6 bit 6: eth_tx_en (DIF_3_P)
- register 6 bit 8: eth_ref_clk (DIF_3_N)
- register 6 bit 9: eth_mdc (DIF_4_P)
- register 6 bit 10: eth_mdio_en (DIF_4_N)
- register 6 bit 11: eth_tx_clk (GPIOH_9)
- register 6 bit 12: eth_txd2 (GPIOH_8)
- register 6 bit 13: eth_txd3 (GPIOH_7)
- register 7 bit 20: eth_txd0_0 (GPIOH_6)
- register 7 bit 21: eth_txd1_0 (GPIOH_5)
- register 7 bit 22: eth_rxd3 (DIF_2_P)
- register 7 bit 23: eth_rxd2 (DIF_2_N)
All functions except eth_rxd2 and eth_rxd3 are already supported by the
pinctrl-meson8b driver.
Suggested-by: Jianxin Pan <jianxin.pan@amlogic.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Reviewed-by: Kevin Hilman <khilman@baylibre.com>
Tested-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
Reviewed-by: Emiliano Ingrassia <ingrassia@epigenesys.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Axel Lin [Thu, 10 Jan 2019 09:26:16 +0000 (17:26 +0800)]
regulator: act8865: Fix act8600_sudcdc_voltage_ranges setting
[ Upstream commit
f01a7beb6791f1c419424c1a6958b7d0a289c974 ]
The act8600_sudcdc_voltage_ranges setting does not match the datasheet.
The problems in below entry:
REGULATOR_LINEAR_RANGE(
19000000, 191, 255, 400000),
1. The off-by-one min_sel causes wrong volatage calculation.
The min_sel should be 192.
2. According to the datasheet[1] Table 7. (on page 43):
The selector 248 (
0b11111000) ~ 255 (
0b11111111) are 41.400V.
Also fix off-by-one for ACT8600_SUDCDC_VOLTAGE_NUM.
[1] https://active-semi.com/wp-content/uploads/ACT8600_Datasheet.pdf
Fixes:
df3a950e4e73 ("regulator: act8865: Add act8600 support")
Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Pawe? Chmiel [Sat, 29 Dec 2018 15:46:01 +0000 (10:46 -0500)]
media: s5p-jpeg: Check for fmt_ver_flag when doing fmt enumeration
[ Upstream commit
49710c32cd9d6626a77c9f5f978a5f58cb536b35 ]
Previously when doing format enumeration, it was returning all
formats supported by driver, even if they're not supported by hw.
Add missing check for fmt_ver_flag, so it'll be fixed and only those
supported by hw will be returned. Similar thing is already done
in s5p_jpeg_find_format.
It was found by using v4l2-compliance tool and checking result
of VIDIOC_ENUM_FMT/FRAMESIZES/FRAMEINTERVALS test
and using v4l2-ctl to get list of all supported formats.
Tested on s5pv210-galaxys (Samsung i9000 phone).
Fixes:
bb677f3ac434 ("[media] Exynos4 JPEG codec v4l2 driver")
Signed-off-by: Pawe? Chmiel <pawel.mikolaj.chmiel@gmail.com>
Reviewed-by: Jacek Anaszewski <jacek.anaszewski@gmail.com>
[hverkuil-cisco@xs4all.nl: fix a few alignment issues]
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Steve Longerbeam [Tue, 15 Jan 2019 01:10:19 +0000 (20:10 -0500)]
media: rcar-vin: Allow independent VIN link enablement
[ Upstream commit
c5ff0edb8e2270a75935c73217fb0de1abd2d910 ]
There is a block of code in rvin_group_link_notify() that prevents
enabling a link to a VIN node if any entity in the media graph is
in use. This prevents enabling a VIN link even if there is an in-use
entity somewhere in the graph that is independent of the link's
pipeline.
For example, the code block will prevent enabling a link from
the first rcar-csi2 receiver to a VIN node even if there is an
enabled link somewhere far upstream on the second independent
rcar-csi2 receiver pipeline.
If this code block is meant to prevent modifying a link if any entity
in the graph is actively involved in streaming (because modifying
the CHSEL register fields can disrupt any/all running streams), then
the entities stream counts should be checked rather than the use counts.
(There is already such a check in __media_entity_setup_link() that verifies
the stream_count of the link's source and sink entities are both zero,
but that is insufficient, since there should be no running streams in
the entire graph).
Modify the code block to check the entity stream_count instead of the
use_count (and elaborate on the comment). VIN node links can now be
enabled even if there are other independent in-use entities that are
not streaming.
Fixes:
c0cc5aef31 ("media: rcar-vin: add link notify for Gen3")
Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Florian Westphal [Fri, 11 Jan 2019 13:46:15 +0000 (14:46 +0100)]
netfilter: physdev: relax br_netfilter dependency
[ Upstream commit
8e2f311a68494a6677c1724bdcb10bada21af37c ]
Following command:
iptables -D FORWARD -m physdev ...
causes connectivity loss in some setups.
Reason is that iptables userspace will probe kernel for the module revision
of the physdev patch, and physdev has an artificial dependency on
br_netfilter (xt_physdev use makes no sense unless a br_netfilter module
is loaded).
This causes the "phydev" module to be loaded, which in turn enables the
"call-iptables" infrastructure.
bridged packets might then get dropped by the iptables ruleset.
The better fix would be to change the "call-iptables" defaults to 0 and
enforce explicit setting to 1, but that breaks backwards compatibility.
This does the next best thing: add a request_module call to checkentry.
This was a stray '-D ... -m physdev' won't activate br_netfilter
anymore.
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Shunyong Yang [Mon, 7 Jan 2019 01:32:14 +0000 (09:32 +0800)]
dmaengine: qcom_hidma: initialize tx flags in hidma_prep_dma_*
[ Upstream commit
875aac8a46424e5b73a9ff7f40b83311b609e407 ]
In async_tx_test_ack(), it uses flags in struct dma_async_tx_descriptor
to check the ACK status. As hidma reuses the descriptor in a free list
when hidma_prep_dma_*(memcpy/memset) is called, the flag will keep ACKed
if the descriptor has been used before. This will cause a BUG_ON in
async_tx_quiesce().
kernel BUG at crypto/async_tx/async_tx.c:282!
Internal error: Oops - BUG: 0 1 SMP
...
task:
ffff8017dd3ec000 task.stack:
ffff8017dd3e8000
PC is at async_tx_quiesce+0x54/0x78 [async_tx]
LR is at async_trigger_callback+0x98/0x110 [async_tx]
This patch initializes flags in dma_async_tx_descriptor by the flags
passed from the caller when hidma_prep_dma_*(memcpy/memset) is called.
Cc: Joey Zheng <yu.zheng@hxt-semitech.com>
Reviewed-by: Sinan Kaya <okaya@kernel.org>
Signed-off-by: Shunyong Yang <shunyong.yang@hxt-semitech.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Shunyong Yang [Mon, 7 Jan 2019 01:34:02 +0000 (09:34 +0800)]
dmaengine: qcom_hidma: assign channel cookie correctly
[ Upstream commit
546c0547555efca8ba8c120716c325435e29df1b ]
When dma_cookie_complete() is called in hidma_process_completed(),
dma_cookie_status() will return DMA_COMPLETE in hidma_tx_status(). Then,
hidma_txn_is_success() will be called to use channel cookie
mchan->last_success to do additional DMA status check. Current code
assigns mchan->last_success after dma_cookie_complete(). This causes
a race condition of dma_cookie_status() returns DMA_COMPLETE before
mchan->last_success is assigned correctly. The race will cause
hidma_tx_status() return DMA_ERROR but the transaction is actually a
success. Moreover, in async_tx case, it will cause a timeout panic
in async_tx_quiesce().
Kernel panic - not syncing: async_tx_quiesce: DMA error waiting for
transaction
...
Call trace:
[<
ffff000008089994>] dump_backtrace+0x0/0x1f4
[<
ffff000008089bac>] show_stack+0x24/0x2c
[<
ffff00000891e198>] dump_stack+0x84/0xa8
[<
ffff0000080da544>] panic+0x12c/0x29c
[<
ffff0000045d0334>] async_tx_quiesce+0xa4/0xc8 [async_tx]
[<
ffff0000045d03c8>] async_trigger_callback+0x70/0x1c0 [async_tx]
[<
ffff0000048b7d74>] raid_run_ops+0x86c/0x1540 [raid456]
[<
ffff0000048bd084>] handle_stripe+0x5e8/0x1c7c [raid456]
[<
ffff0000048be9ec>] handle_active_stripes.isra.45+0x2d4/0x550 [raid456]
[<
ffff0000048beff4>] raid5d+0x38c/0x5d0 [raid456]
[<
ffff000008736538>] md_thread+0x108/0x168
[<
ffff0000080fb1cc>] kthread+0x10c/0x138
[<
ffff000008084d34>] ret_from_fork+0x10/0x18
Cc: Joey Zheng <yu.zheng@hxt-semitech.com>
Reviewed-by: Sinan Kaya <okaya@kernel.org>
Signed-off-by: Shunyong Yang <shunyong.yang@hxt-semitech.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Anders Roxell [Thu, 10 Jan 2019 11:15:35 +0000 (12:15 +0100)]
dmaengine: imx-dma: fix warning comparison of distinct pointer types
[ Upstream commit
9227ab5643cb8350449502dd9e3168a873ab0e3b ]
The warning got introduced by commit
930507c18304 ("arm64: add basic
Kconfig symbols for i.MX8"). Since it got enabled for arm64. The warning
haven't been seen before since size_t was 'unsigned int' when built on
arm32.
../drivers/dma/imx-dma.c: In function ‘imxdma_sg_next’:
../include/linux/kernel.h:846:29: warning: comparison of distinct pointer types lacks a cast
(!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
^~
../include/linux/kernel.h:860:4: note: in expansion of macro ‘__typecheck’
(__typecheck(x, y) && __no_side_effects(x, y))
^~~~~~~~~~~
../include/linux/kernel.h:870:24: note: in expansion of macro ‘__safe_cmp’
__builtin_choose_expr(__safe_cmp(x, y), \
^~~~~~~~~~
../include/linux/kernel.h:879:19: note: in expansion of macro ‘__careful_cmp’
#define min(x, y) __careful_cmp(x, y, <)
^~~~~~~~~~~~~
../drivers/dma/imx-dma.c:288:8: note: in expansion of macro ‘min’
now = min(d->len, sg_dma_len(sg));
^~~
Rework so that we use min_t and pass in the size_t that returns the
minimum of two values, using the specified type.
Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
Acked-by: Olof Johansson <olof@lixom.net>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Valentin Schneider [Wed, 19 Dec 2018 18:23:15 +0000 (18:23 +0000)]
cpu/hotplug: Mute hotplug lockdep during init
[ Upstream commit
ce48c457b95316b9a01b5aa9d4456ce820df94b4 ]
Since we've had:
commit
cb538267ea1e ("jump_label/lockdep: Assert we hold the hotplug lock for _cpuslocked() operations")
we've been getting some lockdep warnings during init, such as on HiKey960:
[ 0.820495] WARNING: CPU: 4 PID: 0 at kernel/cpu.c:316 lockdep_assert_cpus_held+0x3c/0x48
[ 0.820498] Modules linked in:
[ 0.820509] CPU: 4 PID: 0 Comm: swapper/4 Tainted: G S 4.20.0-rc5-00051-g4cae42a #34
[ 0.820511] Hardware name: HiKey960 (DT)
[ 0.820516] pstate:
600001c5 (nZCv dAIF -PAN -UAO)
[ 0.820520] pc : lockdep_assert_cpus_held+0x3c/0x48
[ 0.820523] lr : lockdep_assert_cpus_held+0x38/0x48
[ 0.820526] sp :
ffff00000a9cbe50
[ 0.820528] x29:
ffff00000a9cbe50 x28:
0000000000000000
[ 0.820533] x27:
00008000b69e5000 x26:
ffff8000bff4cfe0
[ 0.820537] x25:
ffff000008ba69e0 x24:
0000000000000001
[ 0.820541] x23:
ffff000008fce000 x22:
ffff000008ba70c8
[ 0.820545] x21:
0000000000000001 x20:
0000000000000003
[ 0.820548] x19:
ffff00000a35d628 x18:
ffffffffffffffff
[ 0.820552] x17:
0000000000000000 x16:
0000000000000000
[ 0.820556] x15:
ffff00000958f848 x14:
455f3052464d4d34
[ 0.820559] x13:
00000000769dde98 x12:
ffff8000bf3f65a8
[ 0.820564] x11:
0000000000000000 x10:
ffff00000958f848
[ 0.820567] x9 :
ffff000009592000 x8 :
ffff00000958f848
[ 0.820571] x7 :
ffff00000818ffa0 x6 :
0000000000000000
[ 0.820574] x5 :
0000000000000000 x4 :
0000000000000001
[ 0.820578] x3 :
0000000000000000 x2 :
0000000000000001
[ 0.820582] x1 :
00000000ffffffff x0 :
0000000000000000
[ 0.820587] Call trace:
[ 0.820591] lockdep_assert_cpus_held+0x3c/0x48
[ 0.820598] static_key_enable_cpuslocked+0x28/0xd0
[ 0.820606] arch_timer_check_ool_workaround+0xe8/0x228
[ 0.820610] arch_timer_starting_cpu+0xe4/0x2d8
[ 0.820615] cpuhp_invoke_callback+0xe8/0xd08
[ 0.820619] notify_cpu_starting+0x80/0xb8
[ 0.820625] secondary_start_kernel+0x118/0x1d0
We've also had a similar warning in sched_init_smp() for every
asymmetric system that would enable the sched_asym_cpucapacity static
key, although that was singled out in:
commit
40fa3780bac2 ("sched/core: Take the hotplug lock in sched_init_smp()")
Those warnings are actually harmless, since we cannot have hotplug
operations at the time they appear. Instead of starting to sprinkle
useless hotplug lock operations in the init codepaths, mute the
warnings until they start warning about real problems.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: cai@gmx.us
Cc: daniel.lezcano@linaro.org
Cc: dietmar.eggemann@arm.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: longman@redhat.com
Cc: marc.zyngier@arm.com
Cc: mark.rutland@arm.com
Link: https://lkml.kernel.org/r/1545243796-23224-2-git-send-email-valentin.schneider@arm.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Buland Singh [Thu, 20 Dec 2018 12:05:24 +0000 (17:35 +0530)]
hpet: Fix missing '=' character in the __setup() code of hpet_mmap_enable
[ Upstream commit
24d48a61f2666630da130cc2ec2e526eacf229e3 ]
Commit '
3d035f580699 ("drivers/char/hpet.c: allow user controlled mmap for
user processes")' introduced a new kernel command line parameter hpet_mmap,
that is required to expose the memory map of the HPET registers to
user-space. Unfortunately the kernel command line parameter 'hpet_mmap' is
broken and never takes effect due to missing '=' character in the __setup()
code of hpet_mmap_enable.
Before this patch:
dmesg output with the kernel command line parameter hpet_mmap=1
[ 0.204152] HPET mmap disabled
dmesg output with the kernel command line parameter hpet_mmap=0
[ 0.204192] HPET mmap disabled
After this patch:
dmesg output with the kernel command line parameter hpet_mmap=1
[ 0.203945] HPET mmap enabled
dmesg output with the kernel command line parameter hpet_mmap=0
[ 0.204652] HPET mmap disabled
Fixes:
3d035f580699 ("drivers/char/hpet.c: allow user controlled mmap for user processes")
Signed-off-by: Buland Singh <bsingh@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Sheng Yong [Tue, 15 Jan 2019 20:02:15 +0000 (20:02 +0000)]
f2fs: UBSAN: set boolean value iostat_enable correctly
[ Upstream commit
ac92985864e187a1735502f6a02f54eaa655b2aa ]
When setting /sys/fs/f2fs/<DEV>/iostat_enable with non-bool value, UBSAN
reports the following warning.
[ 7562.295484] ================================================================================
[ 7562.296531] UBSAN: Undefined behaviour in fs/f2fs/f2fs.h:2776:10
[ 7562.297651] load of value 64 is not a valid value for type '_Bool'
[ 7562.298642] CPU: 1 PID: 7487 Comm: dd Not tainted 4.20.0-rc4+ #79
[ 7562.298653] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[ 7562.298662] Call Trace:
[ 7562.298760] dump_stack+0x46/0x5b
[ 7562.298811] ubsan_epilogue+0x9/0x40
[ 7562.298830] __ubsan_handle_load_invalid_value+0x72/0x90
[ 7562.298863] f2fs_file_write_iter+0x29f/0x3f0
[ 7562.298905] __vfs_write+0x115/0x160
[ 7562.298922] vfs_write+0xa7/0x190
[ 7562.298934] ksys_write+0x50/0xc0
[ 7562.298973] do_syscall_64+0x4a/0xe0
[ 7562.298992] entry_SYSCALL_64_after_hwframe+0x44/0xa9
[ 7562.299001] RIP: 0033:0x7fa45ec19c00
[ 7562.299004] Code: 73 01 c3 48 8b 0d 88 92 2c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d dd eb 2c 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 ce 8f 01 00 48 89 04 24
[ 7562.299044] RSP: 002b:
00007ffca52b49e8 EFLAGS:
00000246 ORIG_RAX:
0000000000000001
[ 7562.299052] RAX:
ffffffffffffffda RBX:
0000000000000000 RCX:
00007fa45ec19c00
[ 7562.299059] RDX:
0000000000000400 RSI:
000000000093f000 RDI:
0000000000000001
[ 7562.299065] RBP:
000000000093f000 R08:
0000000000000004 R09:
0000000000000000
[ 7562.299071] R10:
00007ffca52b47b0 R11:
0000000000000246 R12:
0000000000000400
[ 7562.299077] R13:
000000000093f000 R14:
000000000093f400 R15:
0000000000000000
[ 7562.299091] ================================================================================
So, if iostat_enable is enabled, set its value as true.
Signed-off-by: Sheng Yong <shengyong1@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Song Hongyan [Tue, 22 Jan 2019 01:06:26 +0000 (09:06 +0800)]
HID: intel-ish: ipc: handle PIMR before ish_wakeup also clear PISR busy_clear bit
[ Upstream commit
2edefc056e4f0e6ec9508dd1aca2c18fa320efef ]
Host driver should handle interrupt mask register earlier than wake up ish FW
else there will be conditions when FW interrupt comes, host PIMR register still
not set ready, so move the interrupt mask setting before ish_wakeup.
Clear PISR busy_clear bit in ish_irq_handler. If not clear, there will be
conditions host driver received a busy_clear interrupt (before the busy_clear
mask bit is ready), it will return IRQ_NONE after check_generated_interrupt,
the interrupt will never be cleared, causing the DEVICE not sending following
IRQ.
Since PISR clear should not be called for the CHV device we do this change.
After the change, both ISH2HOST interrupt and busy_clear interrupt will be
considered as interrupt from ISH, busy_clear interrupt will return IRQ_HANDLED
from IPC_IS_BUSY check.
Signed-off-by: Song Hongyan <hongyan.song@intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Timo Alho [Sun, 30 Dec 2018 15:58:08 +0000 (17:58 +0200)]
soc/tegra: fuse: Fix illegal free of IO base address
[ Upstream commit
51294bf6b9e897d595466dcda5a3f2751906a200 ]
On cases where device tree entries for fuse and clock provider are in
different order, fuse driver needs to defer probing. This leads to
freeing incorrect IO base address as the fuse->base variable gets
overwritten once during first probe invocation. This leads to the
following spew during boot:
[ 3.082285] Trying to vfree() nonexistent vm area (
00000000cfe8fd94)
[ 3.082308] WARNING: CPU: 5 PID: 126 at /hdd/l4t/kernel/stable/mm/vmalloc.c:1511 __vunmap+0xcc/0xd8
[ 3.082318] Modules linked in:
[ 3.082330] CPU: 5 PID: 126 Comm: kworker/5:1 Tainted: G S 4.19.7-tegra-gce119d3 #1
[ 3.082340] Hardware name: quill (DT)
[ 3.082353] Workqueue: events deferred_probe_work_func
[ 3.082364] pstate:
40000005 (nZcv daif -PAN -UAO)
[ 3.082372] pc : __vunmap+0xcc/0xd8
[ 3.082379] lr : __vunmap+0xcc/0xd8
[ 3.082385] sp :
ffff00000a1d3b60
[ 3.082391] x29:
ffff00000a1d3b60 x28:
0000000000000000
[ 3.082402] x27:
0000000000000000 x26:
ffff000008e8b610
[ 3.082413] x25:
0000000000000000 x24:
0000000000000009
[ 3.082423] x23:
ffff000009221a90 x22:
ffff000009f6d000
[ 3.082432] x21:
0000000000000000 x20:
0000000000000000
[ 3.082442] x19:
ffff000009f6d000 x18:
ffffffffffffffff
[ 3.082452] x17:
0000000000000000 x16:
0000000000000000
[ 3.082462] x15:
ffff0000091396c8 x14:
0720072007200720
[ 3.082471] x13:
0720072007200720 x12:
0720072907340739
[ 3.082481] x11:
0764076607380765 x10:
0766076307300730
[ 3.082491] x9 :
0730073007300730 x8 :
0730073007280720
[ 3.082501] x7 :
0761076507720761 x6 :
0000000000000102
[ 3.082510] x5 :
0000000000000000 x4 :
0000000000000000
[ 3.082519] x3 :
ffffffffffffffff x2 :
ffff000009150ff8
[ 3.082528] x1 :
3d95b1429fff5200 x0 :
0000000000000000
[ 3.082538] Call trace:
[ 3.082545] __vunmap+0xcc/0xd8
[ 3.082552] vunmap+0x24/0x30
[ 3.082561] __iounmap+0x2c/0x38
[ 3.082569] tegra_fuse_probe+0xc8/0x118
[ 3.082577] platform_drv_probe+0x50/0xa0
[ 3.082585] really_probe+0x1b0/0x288
[ 3.082593] driver_probe_device+0x58/0x100
[ 3.082601] __device_attach_driver+0x98/0xf0
[ 3.082609] bus_for_each_drv+0x64/0xc8
[ 3.082616] __device_attach+0xd8/0x130
[ 3.082624] device_initial_probe+0x10/0x18
[ 3.082631] bus_probe_device+0x90/0x98
[ 3.082638] deferred_probe_work_func+0x74/0xb0
[ 3.082649] process_one_work+0x1e0/0x318
[ 3.082656] worker_thread+0x228/0x450
[ 3.082664] kthread+0x128/0x130
[ 3.082672] ret_from_fork+0x10/0x18
[ 3.082678] ---[ end trace
0810fe6ba772c1c7 ]---
Fix this by retaining the value of fuse->base until driver has
successfully probed.
Signed-off-by: Timo Alho <talho@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
David Tolnay [Mon, 7 Jan 2019 22:36:11 +0000 (14:36 -0800)]
hwrng: virtio - Avoid repeated init of completion
[ Upstream commit
aef027db48da56b6f25d0e54c07c8401ada6ce21 ]
The virtio-rng driver uses a completion called have_data to wait for a
virtio read to be fulfilled by the hypervisor. The completion is reset
before placing a buffer on the virtio queue and completed by the virtio
callback once data has been written into the buffer.
Prior to this commit, the driver called init_completion on this
completion both during probe as well as when registering virtio buffers
as part of a hwrng read operation. The second of these init_completion
calls should instead be reinit_completion because the have_data
completion has already been inited by probe. As described in
Documentation/scheduler/completion.txt, "Calling init_completion() twice
on the same completion object is most likely a bug".
This bug was present in the initial implementation of virtio-rng in
f7f510ec1957 ("virtio: An entropy device, as suggested by hpa"). Back
then the have_data completion was a single static completion rather than
a member of one of potentially multiple virtrng_info structs as
implemented later by
08e53fbdb85c ("virtio-rng: support multiple
virtio-rng devices"). The original driver incorrectly used
init_completion rather than INIT_COMPLETION to reset have_data during
read.
Tested by running `head -c48 /dev/random | hexdump` within crosvm, the
Chrome OS virtual machine monitor, and confirming that the virtio-rng
driver successfully produces random bytes from the host.
Signed-off-by: David Tolnay <dtolnay@gmail.com>
Tested-by: David Tolnay <dtolnay@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Akinobu Mita [Tue, 15 Jan 2019 14:05:41 +0000 (12:05 -0200)]
media: mt9m111: set initial frame size other than 0x0
[ Upstream commit
29856308137de1c21eda89411695f4fc6e9780ff ]
This driver sets initial frame width and height to 0x0, which is invalid.
So set it to selection rectangle bounds instead.
This is detected by v4l2-compliance detected.
Cc: Enrico Scholz <enrico.scholz@sigma-chemnitz.de>
Cc: Michael Grzeschik <m.grzeschik@pengutronix.de>
Cc: Marco Felsch <m.felsch@pengutronix.de>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Tony Jones [Thu, 24 Jan 2019 00:52:24 +0000 (16:52 -0800)]
perf script python: Add trace_context extension module to sys.modules
[ Upstream commit
cc437642255224e4140fed1f3e3156fc8ad91903 ]
In Python3, the result of PyModule_Create (called from
scripts/python/Perf-Trace-Util/Context.c) is not automatically added to
sys.modules. See: https://bugs.python.org/issue4592
Below is the observed behavior without the fix:
# ldd /usr/bin/perf | grep -i python
libpython3.6m.so.1.0 => /usr/lib64/libpython3.6m.so.1.0 (0x00007f8e1dfb2000)
# perf record /bin/false
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.015 MB perf.data (17 samples) ]
# perf script -g python | cat
generated Python script: perf-script.py
# perf script -s ./perf-script.py
Traceback (most recent call last):
File "./perf-script.py", line 18, in <module>
from perf_trace_context import *
ModuleNotFoundError: No module named 'perf_trace_context'
Error running python script ./perf-script.py
#
Committer notes:
To build with python3 use:
$ make -C tools/perf PYTHON=python3
Use a non-const variable to pass the 'name' arg to
PyImport_AppendInittab(), as python2.6 has that as 'char *', which ends
up trowing this in some environments:
CC /tmp/build/perf/util/parse-branch-options.o
util/scripting-engines/trace-event-python.c: In function 'python_start_script':
util/scripting-engines/trace-event-python.c:1520:2: error: passing argument 1 of 'PyImport_AppendInittab' discards 'const' qualifier from pointer target type [-Werror]
PyImport_AppendInittab("perf_trace_context", initfunc);
^
In file included from /usr/include/python2.6/Python.h:130:0,
from util/scripting-engines/trace-event-python.c:22:
/usr/include/python2.6/import.h:54:17: note: expected 'char *' but argument is of type 'const char *'
PyAPI_FUNC(int) PyImport_AppendInittab(char *name, void (*initfunc)(void));
^
cc1: all warnings being treated as errors
Signed-off-by: Tony Jones <tonyj@suse.de>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jaroslav Škarvada <jskarvad@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com>
Fixes:
66dfdff03d19 ("perf tools: Add Python 3 support")
Link: http://lkml.kernel.org/r/20190124005229.16146-2-tonyj@suse.de
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Tony Jones [Thu, 24 Jan 2019 00:52:25 +0000 (16:52 -0800)]
perf script python: Use PyBytes for attr in trace-event-python
[ Upstream commit
72e0b15cb24a497d7d0d4707cf51ff40c185ae8c ]
With Python3. PyUnicode_FromStringAndSize is unsafe to call on attr and will
return NULL. Use _PyBytes_FromStringAndSize (as with raw_buf).
Below is the observed behavior without the fix. Note it is first necessary
to apply the prior fix (Add trace_context extension module to sys,modules):
# ldd /usr/bin/perf | grep -i python
libpython3.6m.so.1.0 => /usr/lib64/libpython3.6m.so.1.0 (0x00007f8e1dfb2000)
# perf record -e raw_syscalls:sys_enter /bin/false
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.018 MB perf.data (21 samples) ]
# perf script -g python | cat
generated Python script: perf-script.py
# perf script -s ./perf-script.py
in trace_begin
Segmentation fault (core dumped)
Signed-off-by: Tony Jones <tonyj@suse.de>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jaroslav Škarvada <jskarvad@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: Seeteena Thoufeek <s1seetee@linux.vnet.ibm.com>
Fixes:
66dfdff03d19 ("perf tools: Add Python 3 support")
Link: http://lkml.kernel.org/r/20190124005229.16146-3-tonyj@suse.de
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Jérôme de Bretagne [Sun, 6 Jan 2019 17:56:44 +0000 (18:56 +0100)]
platform/x86: intel-hid: Missing power button release on some Dell models
[ Upstream commit
e97a34563d18606ee5db93e495382a967f999cd4 ]
Power button suspend for some Dell models was added in:
commit
821b85366284 ("platform/x86: intel-hid: Power button suspend on Dell Latitude 7275")
by checking against the power button press notification (0xCE) to report
the power button press event. The corresponding power button release
notification (0xCF) was caught and ignored to stop it from being reported
as an "unknown event" in the logs.
The missing button release event is creating issues on Android-x86, as
reported on the project mailing list for a Dell Latitude 5175 model, since
the events are expected in down/up pairs.
Report the power button release event to fix this issue.
Link: https://groups.google.com/forum/#!topic/android-x86/aSwZK9Nf9Ro
Tested-by: Tristian Celestin <tristian.celestin@outlook.com>
Tested-by: Jérôme de Bretagne <jerome.debretagne@gmail.com>
Signed-off-by: Jérôme de Bretagne <jerome.debretagne@gmail.com>
Reviewed-by: Mario Limonciello <mario.limonciello@dell.com>
[dvhart: corrected commit reference format per checkpatch]
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
projects / platform / kernel / linux-rpi.git / log