Suravee Suthikulpanit [Thu, 24 Jan 2019 04:16:45 +0000 (04:16 +0000)]
iommu/amd: Fix IOMMU page flush when detach device from a domain
[ Upstream commit
9825bd94e3a2baae1f4874767ae3a7d4c049720e ]
When a VM is terminated, the VFIO driver detaches all pass-through
devices from VFIO domain by clearing domain id and page table root
pointer from each device table entry (DTE), and then invalidates
the DTE. Then, the VFIO driver unmap pages and invalidate IOMMU pages.
Currently, the IOMMU driver keeps track of which IOMMU and how many
devices are attached to the domain. When invalidate IOMMU pages,
the driver checks if the IOMMU is still attached to the domain before
issuing the invalidate page command.
However, since VFIO has already detached all devices from the domain,
the subsequent INVALIDATE_IOMMU_PAGES commands are being skipped as
there is no IOMMU attached to the domain. This results in data
corruption and could cause the PCI device to end up in indeterministic
state.
Fix this by invalidate IOMMU pages when detach a device, and
before decrementing the per-domain device reference counts.
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Suggested-by: Joerg Roedel <joro@8bytes.org>
Co-developed-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Fixes: 6de8ad9b9ee0 ('x86/amd-iommu: Make iommu_flush_pages aware of multiple IOMMUs')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
ZhangXiaoxu [Thu, 10 Jan 2019 08:39:06 +0000 (16:39 +0800)]
ipvs: Fix signed integer overflow when setsockopt timeout
[ Upstream commit
53ab60baa1ac4f20b080a22c13b77b6373922fd7 ]
There is a UBSAN bug report as below:
UBSAN: Undefined behaviour in net/netfilter/ipvs/ip_vs_ctl.c:2227:21
signed integer overflow:
-
2147483647 * 1000 cannot be represented in type 'int'
Reproduce program:
#include <stdio.h>
#include <sys/types.h>
#include <sys/socket.h>
#define IPPROTO_IP 0
#define IPPROTO_RAW 255
#define IP_VS_BASE_CTL (64+1024+64)
#define IP_VS_SO_SET_TIMEOUT (IP_VS_BASE_CTL+10)
/* The argument to IP_VS_SO_GET_TIMEOUT */
struct ipvs_timeout_t {
int tcp_timeout;
int tcp_fin_timeout;
int udp_timeout;
};
int main() {
int ret = -1;
int sockfd = -1;
struct ipvs_timeout_t to;
sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
if (sockfd == -1) {
printf("socket init error\n");
return -1;
}
to.tcp_timeout = -
2147483647;
to.tcp_fin_timeout = -
2147483647;
to.udp_timeout = -
2147483647;
ret = setsockopt(sockfd,
IPPROTO_IP,
IP_VS_SO_SET_TIMEOUT,
(char *)(&to),
sizeof(to));
printf("setsockopt return %d\n", ret);
return ret;
}
Return -EINVAL if the timeout value is negative or max than 'INT_MAX / HZ'.
Signed-off-by: ZhangXiaoxu <zhangxiaoxu5@huawei.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Jerry Snitselaar [Sat, 19 Jan 2019 17:38:05 +0000 (10:38 -0700)]
iommu/amd: Unmap all mapped pages in error path of map_sg
[ Upstream commit
f1724c0883bb0ce93b8dcb94b53dcca3b75ac9a7 ]
In the error path of map_sg there is an incorrect if condition
for breaking out of the loop that searches the scatterlist
for mapped pages to unmap. Instead of breaking out of the
loop once all the pages that were mapped have been unmapped,
it will break out of the loop after it has unmapped 1 page.
Fix the condition, so it breaks out of the loop only after
all the mapped pages have been unmapped.
Fixes: 80187fd39dcb ("iommu/amd: Optimize map_sg and unmap_sg")
Cc: Joerg Roedel <joro@8bytes.org>
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Jerry Snitselaar [Thu, 17 Jan 2019 19:29:02 +0000 (12:29 -0700)]
iommu/amd: Call free_iova_fast with pfn in map_sg
[ Upstream commit
51d8838d66d3249508940d8f59b07701f2129723 ]
In the error path of map_sg, free_iova_fast is being called with
address instead of the pfn. This results in a bad value getting into
the rcache, and can result in hitting a BUG_ON when
iova_magazine_free_pfns is called.
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Jerry Snitselaar <jsnitsel@redhat.com>
Fixes: 80187fd39dcb ("iommu/amd: Optimize map_sg and unmap_sg")
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Brian Welty [Thu, 17 Jan 2019 20:41:32 +0000 (12:41 -0800)]
IB/{hfi1, qib}: Fix WC.byte_len calculation for UD_SEND_WITH_IMM
[ Upstream commit
904bba211acc2112fdf866e5a2bc6cd9ecd0de1b ]
The work completion length for a receiving a UD send with immediate is
short by 4 bytes causing application using this opcode to fail.
The UD receive logic incorrectly subtracts 4 bytes for immediate
value. These bytes are already included in header length and are used to
calculate header/payload split, so the result is these 4 bytes are
subtracted twice, once when the header length subtracted from the overall
length and once again in the UD opcode specific path.
Remove the extra subtraction when handling the opcode.
Fixes: 7724105686e7 ("IB/hfi1: add driver files")
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Brian Welty <brian.welty@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Stephane Eranian [Sat, 19 Jan 2019 08:12:39 +0000 (00:12 -0800)]
perf tools: Handle TOPOLOGY headers with no CPU
[ Upstream commit
1497e804d1a6e2bd9107ddf64b0310449f4673eb ]
This patch fixes an issue in cpumap.c when used with the TOPOLOGY
header. In some configurations, some NUMA nodes may have no CPU (empty
cpulist). Yet a cpumap map must be created otherwise perf abort with an
error. This patch handles this case by creating a dummy map.
Before:
$ perf record -o - -e cycles noploop 2 | perf script -i -
0x6e8 [0x6c]: failed to process type: 80
After:
$ perf record -o - -e cycles noploop 2 | perf script -i -
noploop for 2 seconds
Signed-off-by: Stephane Eranian <eranian@google.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1547885559-1657-1-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Stephane Eranian [Fri, 11 Jan 2019 01:17:16 +0000 (17:17 -0800)]
perf core: Fix perf_proc_update_handler() bug
[ Upstream commit
1a51c5da5acc6c188c917ba572eebac5f8793432 ]
The perf_proc_update_handler() handles /proc/sys/kernel/perf_event_max_sample_rate
syctl variable. When the PMU IRQ handler timing monitoring is disabled, i.e,
when /proc/sys/kernel/perf_cpu_time_max_percent is equal to 0 or 100,
then no modification to sysctl_perf_event_sample_rate is allowed to prevent
possible hang from wrong values.
The problem is that the test to prevent modification is made after the
sysctl variable is modified in perf_proc_update_handler().
You get an error:
$ echo 10001 >/proc/sys/kernel/perf_event_max_sample_rate
echo: write error: invalid argument
But the value is still modified causing all sorts of inconsistencies:
$ cat /proc/sys/kernel/perf_event_max_sample_rate
10001
This patch fixes the problem by moving the parsing of the value after
the test.
Committer testing:
# echo 100 > /proc/sys/kernel/perf_cpu_time_max_percent
# echo 10001 > /proc/sys/kernel/perf_event_max_sample_rate
-bash: echo: write error: Invalid argument
# cat /proc/sys/kernel/perf_event_max_sample_rate
10001
#
Signed-off-by: Stephane Eranian <eranian@google.com>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@kernel.org>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1547169436-6266-1-git-send-email-eranian@google.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Su Yanjun [Mon, 7 Jan 2019 02:31:20 +0000 (21:31 -0500)]
vti4: Fix a ipip packet processing bug in 'IPCOMP' virtual tunnel
[ Upstream commit
dd9ee3444014e8f28c0eefc9fffc9ac9c5248c12 ]
Recently we run a network test over ipcomp virtual tunnel.We find that
if a ipv4 packet needs fragment, then the peer can't receive
it.
We deep into the code and find that when packet need fragment the smaller
fragment will be encapsulated by ipip not ipcomp. So when the ipip packet
goes into xfrm, it's skb->dev is not properly set. The ipv4 reassembly code
always set skb'dev to the last fragment's dev. After ipv4 defrag processing,
when the kernel rp_filter parameter is set, the skb will be drop by -EXDEV
error.
This patch adds compatible support for the ipip process in ipcomp virtual tunnel.
Signed-off-by: Su Yanjun <suyj.fnst@cn.fujitsu.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Alistair Strachan [Wed, 19 Dec 2018 01:32:48 +0000 (20:32 -0500)]
media: uvcvideo: Fix 'type' check leading to overflow
commit
47bb117911b051bbc90764a8bff96543cbd2005f upstream.
When initially testing the Camera Terminal Descriptor wTerminalType
field (buffer[4]), no mask is used. Later in the function, the MSB is
overloaded to store the descriptor subtype, and so a mask of 0x7fff
is used to check the type.
If a descriptor is specially crafted to set this overloaded bit in the
original wTerminalType field, the initial type check will fail (falling
through, without adjusting the buffer size), but the later type checks
will pass, assuming the buffer has been made suitably large, causing an
overflow.
Avoid this problem by checking for the MSB in the wTerminalType field.
If the bit is set, assume the descriptor is bad, and abort parsing it.
Originally reported here:
https://groups.google.com/forum/#!topic/syzkaller/Ot1fOE6v1d8
A similar (non-compiling) patch was provided at that time.
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Alistair Strachan <astrachan@google.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
YueHaibing [Tue, 19 Feb 2019 02:10:38 +0000 (10:10 +0800)]
exec: Fix mem leak in kernel_read_file
commit
f612acfae86af7ecad754ae6a46019be9da05b8e upstream.
syzkaller report this:
BUG: memory leak
unreferenced object 0xffffc9000488d000 (size
9195520):
comm "syz-executor.0", pid 2752, jiffies
4294787496 (age 18.757s)
hex dump (first 32 bytes):
ff ff ff ff ff ff ff ff a8 00 00 00 01 00 00 00 ................
02 00 00 00 00 00 00 00 80 a1 7a c1 ff ff ff ff ..........z.....
backtrace:
[<
000000000863775c>] __vmalloc_node mm/vmalloc.c:1795 [inline]
[<
000000000863775c>] __vmalloc_node_flags mm/vmalloc.c:1809 [inline]
[<
000000000863775c>] vmalloc+0x8c/0xb0 mm/vmalloc.c:1831
[<
000000003f668111>] kernel_read_file+0x58f/0x7d0 fs/exec.c:924
[<
000000002385813f>] kernel_read_file_from_fd+0x49/0x80 fs/exec.c:993
[<
0000000011953ff1>] __do_sys_finit_module+0x13b/0x2a0 kernel/module.c:3895
[<
000000006f58491f>] do_syscall_64+0x147/0x600 arch/x86/entry/common.c:290
[<
00000000ee78baf4>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<
00000000241f889b>] 0xffffffffffffffff
It should goto 'out_free' lable to free allocated buf while kernel_read
fails.
Fixes: 39d637af5aa7 ("vfs: forbid write access when reading a file into memory")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Thibaut Sautereau <thibaut@sautereau.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Mike Kravetz [Fri, 1 Mar 2019 00:22:02 +0000 (16:22 -0800)]
hugetlbfs: fix races and page leaks during migration
commit
cb6acd01e2e43fd8bad11155752b7699c3d0fb76 upstream.
hugetlb pages should only be migrated if they are 'active'. The
routines set/clear_page_huge_active() modify the active state of hugetlb
pages.
When a new hugetlb page is allocated at fault time, set_page_huge_active
is called before the page is locked. Therefore, another thread could
race and migrate the page while it is being added to page table by the
fault code. This race is somewhat hard to trigger, but can be seen by
strategically adding udelay to simulate worst case scheduling behavior.
Depending on 'how' the code races, various BUG()s could be triggered.
To address this issue, simply delay the set_page_huge_active call until
after the page is successfully added to the page table.
Hugetlb pages can also be leaked at migration time if the pages are
associated with a file in an explicitly mounted hugetlbfs filesystem.
For example, consider a two node system with 4GB worth of huge pages
available. A program mmaps a 2G file in a hugetlbfs filesystem. It
then migrates the pages associated with the file from one node to
another. When the program exits, huge page counts are as follows:
node0
1024 free_hugepages
1024 nr_hugepages
node1
0 free_hugepages
1024 nr_hugepages
Filesystem Size Used Avail Use% Mounted on
nodev 4.0G 2.0G 2.0G 50% /var/opt/hugepool
That is as expected. 2G of huge pages are taken from the free_hugepages
counts, and 2G is the size of the file in the explicitly mounted
filesystem. If the file is then removed, the counts become:
node0
1024 free_hugepages
1024 nr_hugepages
node1
1024 free_hugepages
1024 nr_hugepages
Filesystem Size Used Avail Use% Mounted on
nodev 4.0G 2.0G 2.0G 50% /var/opt/hugepool
Note that the filesystem still shows 2G of pages used, while there
actually are no huge pages in use. The only way to 'fix' the filesystem
accounting is to unmount the filesystem
If a hugetlb page is associated with an explicitly mounted filesystem,
this information in contained in the page_private field. At migration
time, this information is not preserved. To fix, simply transfer
page_private from old to new page at migration time if necessary.
There is a related race with removing a huge page from a file and
migration. When a huge page is removed from the pagecache, the
page_mapping() field is cleared, yet page_private remains set until the
page is actually freed by free_huge_page(). A page could be migrated
while in this state. However, since page_mapping() is not set the
hugetlbfs specific routine to transfer page_private is not called and we
leak the page count in the filesystem.
To fix that, check for this condition before migrating a huge page. If
the condition is detected, return EBUSY for the page.
Link: http://lkml.kernel.org/r/74510272-7319-7372-9ea6-ec914734c179@oracle.com
Link: http://lkml.kernel.org/r/20190212221400.3512-1-mike.kravetz@oracle.com
Fixes: bcc54222309c ("mm: hugetlb: introduce page_huge_active")
Signed-off-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Mel Gorman <mgorman@techsingularity.net>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: <stable@vger.kernel.org>
[mike.kravetz@oracle.com: v2]
Link: http://lkml.kernel.org/r/7534d322-d782-8ac6-1c8d-a8dc380eb3ab@oracle.com
[mike.kravetz@oracle.com: update comment and changelog]
Link: http://lkml.kernel.org/r/420bcfd6-158b-38e4-98da-26d0cd85bd01@oracle.com
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>
Liu Xiang [Sat, 16 Feb 2019 09:12:24 +0000 (17:12 +0800)]
MIPS: irq: Allocate accurate order pages for irq stack
commit
72faa7a773ca59336f3c889e878de81445c5a85c upstream.
The irq_pages is the number of pages for irq stack, but not the
order which is needed by __get_free_pages().
We can use get_order() to calculate the accurate order.
Signed-off-by: Liu Xiang <liu.xiang6@zte.com.cn>
Signed-off-by: Paul Burton <paul.burton@mips.com>
Fixes: fe8bd18ffea5 ("MIPS: Introduce irq_stack")
Cc: linux-mips@vger.kernel.org
Cc: stable@vger.kernel.org # v4.11+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gustavo A. R. Silva [Wed, 9 Jan 2019 22:05:10 +0000 (16:05 -0600)]
applicom: Fix potential Spectre v1 vulnerabilities
commit
d7ac3c6ef5d8ce14b6381d52eb7adafdd6c8bb3c upstream.
IndexCard is indirectly controlled by user-space, hence leading to
a potential exploitation of the Spectre variant 1 vulnerability.
This issue was detected with the help of Smatch:
drivers/char/applicom.c:418 ac_write() warn: potential spectre issue 'apbs' [r]
drivers/char/applicom.c:728 ac_ioctl() warn: potential spectre issue 'apbs' [r] (local cap)
Fix this by sanitizing IndexCard before using it to index apbs.
Notice that given that speculation windows are large, the policy is
to kill the speculation on the first load and not worry if it can be
completed with a dependent load/store [1].
[1] https://lore.kernel.org/lkml/
20180423164740.GY17484@dhcp22.suse.cz/
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jiaxun Yang [Tue, 20 Nov 2018 03:00:18 +0000 (11:00 +0800)]
x86/CPU/AMD: Set the CPB bit unconditionally on F17h
commit
0237199186e7a4aa5310741f0a6498a20c820fd7 upstream.
Some F17h models do not have CPB set in CPUID even though the CPU
supports it. Set the feature bit unconditionally on all F17h.
[ bp: Rewrite commit message and patch. ]
Signed-off-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Sherry Hurwitz <sherry.hurwitz@amd.com>
Cc: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: x86-ml <x86@kernel.org>
Link: https://lkml.kernel.org/r/20181120030018.5185-1-jiaxun.yang@flygoat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Rajasingh Thavamani [Wed, 27 Feb 2019 12:13:19 +0000 (17:43 +0530)]
net: phy: Micrel KSZ8061: link failure after cable connect
[ Upstream commit
232ba3a51cc224b339c7114888ed7f0d4d95695e ]
With Micrel KSZ8061 PHY, the link may occasionally not come up after
Ethernet cable connect. The vendor's (Microchip, former Micrel) errata
sheet
80000688A.pdf descripes the problem and possible workarounds in
detail, see below.
The batch implements workaround 1, which permanently fixes the issue.
DESCRIPTION
Link-up may not occur properly when the Ethernet cable is initially
connected. This issue occurs more commonly when the cable is connected
slowly, but it may occur any time a cable is connected. This issue occurs
in the auto-negotiation circuit, and will not occur if auto-negotiation
is disabled (which requires that the two link partners be set to the
same speed and duplex).
END USER IMPLICATIONS
When this issue occurs, link is not established. Subsequent cable
plug/unplaug cycle will not correct the issue.
WORk AROUND
There are four approaches to work around this issue:
1. This issue can be prevented by setting bit 15 in MMD device address 1,
register 2, prior to connecting the cable or prior to setting the
Restart Auto-negotiation bit in register 0h. The MMD registers are
accessed via the indirect access registers Dh and Eh, or via the Micrel
EthUtil utility as shown here:
. if using the EthUtil utility (usually with a Micrel KSZ8061
Evaluation Board), type the following commands:
> address 1
> mmd 1
> iw 2 b61a
. Alternatively, write the following registers to write to the
indirect MMD register:
Write register Dh, data 0001h
Write register Eh, data 0002h
Write register Dh, data 4001h
Write register Eh, data B61Ah
2. The issue can be avoided by disabling auto-negotiation in the KSZ8061,
either by the strapping option, or by clearing bit 12 in register 0h.
Care must be taken to ensure that the KSZ8061 and the link partner
will link with the same speed and duplex. Note that the KSZ8061
defaults to full-duplex when auto-negotiation is off, but other
devices may default to half-duplex in the event of failed
auto-negotiation.
3. The issue can be avoided by connecting the cable prior to powering-up
or resetting the KSZ8061, and leaving it plugged in thereafter.
4. If the above measures are not taken and the problem occurs, link can
be recovered by setting the Restart Auto-Negotiation bit in
register 0h, or by resetting or power cycling the device. Reset may
be either hardware reset or software reset (register 0h, bit 15).
PLAN
This errata will not be corrected in the future revision.
Fixes: 7ab59dc15e2f ("drivers/net/phy/micrel_phy: Add support for new PHYs")
Signed-off-by: Alexander Onnasch <alexander.onnasch@landisgyr.com>
Signed-off-by: Rajasingh Thavamani <T.Rajasingh@landisgyr.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Timur Celik [Mon, 25 Feb 2019 20:13:13 +0000 (21:13 +0100)]
tun: remove unnecessary memory barrier
[ Upstream commit
ecef67cb10db7b83b3b71c61dbb29aa070ab0112 ]
Replace set_current_state with __set_current_state since no memory
barrier is needed at this point.
Signed-off-by: Timur Celik <mail@timurcelik.de>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Timur Celik [Sat, 23 Feb 2019 11:53:13 +0000 (12:53 +0100)]
tun: fix blocking read
[ Upstream commit
71828b2240692cec0e68b8d867bc00e1745e7fae ]
This patch moves setting of the current state into the loop. Otherwise
the task may end up in a busy wait loop if none of the break conditions
are met.
Signed-off-by: Timur Celik <mail@timurcelik.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nazarov Sergey [Mon, 25 Feb 2019 16:27:15 +0000 (19:27 +0300)]
net: avoid use IPCB in cipso_v4_error
[ Upstream commit
3da1ed7ac398f34fff1694017a07054d69c5f5c5 ]
Extract IP options in cipso_v4_error and use __icmp_send.
Signed-off-by: Sergey Nazarov <s-nazarov@yandex.ru>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nazarov Sergey [Mon, 25 Feb 2019 16:24:15 +0000 (19:24 +0300)]
net: Add __icmp_send helper.
[ Upstream commit
9ef6b42ad6fd7929dd1b6092cb02014e382c6a91 ]
Add __icmp_send function having ip_options struct parameter
Signed-off-by: Sergey Nazarov <s-nazarov@yandex.ru>
Reviewed-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Igor Druzhinin [Thu, 28 Feb 2019 12:48:03 +0000 (12:48 +0000)]
xen-netback: fix occasional leak of grant ref mappings under memory pressure
[ Upstream commit
99e87f56b48f490fb16b6e0f74691c1e664dea95 ]
Zero-copy callback flag is not yet set on frag list skb at the moment
xenvif_handle_frag_list() returns -ENOMEM. This eventually results in
leaking grant ref mappings since xenvif_zerocopy_callback() is never
called for these fragments. Those eventually build up and cause Xen
to kill Dom0 as the slots get reused for new mappings:
"d0v0 Attempt to implicitly unmap a granted PTE
c010000329fce005"
That behavior is observed under certain workloads where sudden spikes
of page cache writes coexist with active atomic skb allocations from
network traffic. Additionally, rework the logic to deal with frag_list
deallocation in a single place.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
Acked-by: Wei Liu <wei.liu2@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Igor Druzhinin [Thu, 28 Feb 2019 14:11:26 +0000 (14:11 +0000)]
xen-netback: don't populate the hash cache on XenBus disconnect
[ Upstream commit
a2288d4e355992d369c50c45d017a85f6061ff71 ]
Occasionally, during the disconnection procedure on XenBus which
includes hash cache deinitialization there might be some packets
still in-flight on other processors. Handling of these packets includes
hashing and hash cache population that finally results in hash cache
data structure corruption.
In order to avoid this we prevent hashing of those packets if there
are no queues initialized. In that case RCU protection of queues guards
the hash cache as well.
Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
Reviewed-by: Paul Durrant <paul.durrant@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Mao Wenan [Fri, 1 Mar 2019 15:06:40 +0000 (23:06 +0800)]
net: sit: fix memory leak in sit_init_net()
[ Upstream commit
07f12b26e21ab359261bf75cfcb424fdc7daeb6d ]
If register_netdev() is failed to register sitn->fb_tunnel_dev,
it will go to err_reg_dev and forget to free netdev(sitn->fb_tunnel_dev).
BUG: memory leak
unreferenced object 0xffff888378daad00 (size 512):
comm "syz-executor.1", pid 4006, jiffies
4295121142 (age 16.115s)
hex dump (first 32 bytes):
00 e6 ed c0 83 88 ff ff 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:
[<
00000000d6dcb63e>] kvmalloc include/linux/mm.h:577 [inline]
[<
00000000d6dcb63e>] kvzalloc include/linux/mm.h:585 [inline]
[<
00000000d6dcb63e>] netif_alloc_netdev_queues net/core/dev.c:8380 [inline]
[<
00000000d6dcb63e>] alloc_netdev_mqs+0x600/0xcc0 net/core/dev.c:8970
[<
00000000867e172f>] sit_init_net+0x295/0xa40 net/ipv6/sit.c:1848
[<
00000000871019fa>] ops_init+0xad/0x3e0 net/core/net_namespace.c:129
[<
00000000319507f6>] setup_net+0x2ba/0x690 net/core/net_namespace.c:314
[<
0000000087db4f96>] copy_net_ns+0x1dc/0x330 net/core/net_namespace.c:437
[<
0000000057efc651>] create_new_namespaces+0x382/0x730 kernel/nsproxy.c:107
[<
00000000676f83de>] copy_namespaces+0x2ed/0x3d0 kernel/nsproxy.c:165
[<
0000000030b74bac>] copy_process.part.27+0x231e/0x6db0 kernel/fork.c:1919
[<
00000000fff78746>] copy_process kernel/fork.c:1713 [inline]
[<
00000000fff78746>] _do_fork+0x1bc/0xe90 kernel/fork.c:2224
[<
000000001c2e0d1c>] do_syscall_64+0xc8/0x580 arch/x86/entry/common.c:290
[<
00000000ec48bd44>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<
0000000039acff8a>] 0xffffffffffffffff
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
YueHaibing [Fri, 22 Feb 2019 07:37:58 +0000 (15:37 +0800)]
net: nfc: Fix NULL dereference on nfc_llcp_build_tlv fails
[ Upstream commit
58bdd544e2933a21a51eecf17c3f5f94038261b5 ]
KASAN report this:
BUG: KASAN: null-ptr-deref in nfc_llcp_build_gb+0x37f/0x540 [nfc]
Read of size 3 at addr
0000000000000000 by task syz-executor.0/5401
CPU: 0 PID: 5401 Comm: syz-executor.0 Not tainted 5.0.0-rc7+ #45
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1ubuntu1 04/01/2014
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xfa/0x1ce lib/dump_stack.c:113
kasan_report+0x171/0x18d mm/kasan/report.c:321
memcpy+0x1f/0x50 mm/kasan/common.c:130
nfc_llcp_build_gb+0x37f/0x540 [nfc]
nfc_llcp_register_device+0x6eb/0xb50 [nfc]
nfc_register_device+0x50/0x1d0 [nfc]
nfcsim_device_new+0x394/0x67d [nfcsim]
? 0xffffffffc1080000
nfcsim_init+0x6b/0x1000 [nfcsim]
do_one_initcall+0xfa/0x5ca init/main.c:887
do_init_module+0x204/0x5f6 kernel/module.c:3460
load_module+0x66b2/0x8570 kernel/module.c:3808
__do_sys_finit_module+0x238/0x2a0 kernel/module.c:3902
do_syscall_64+0x147/0x600 arch/x86/entry/common.c:290
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x462e99
Code: f7 d8 64 89 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:
00007f9cb79dcc58 EFLAGS:
00000246 ORIG_RAX:
0000000000000139
RAX:
ffffffffffffffda RBX:
000000000073bf00 RCX:
0000000000462e99
RDX:
0000000000000000 RSI:
0000000020000280 RDI:
0000000000000003
RBP:
00007f9cb79dcc70 R08:
0000000000000000 R09:
0000000000000000
R10:
0000000000000000 R11:
0000000000000246 R12:
00007f9cb79dd6bc
R13:
00000000004bcefb R14:
00000000006f7030 R15:
0000000000000004
nfc_llcp_build_tlv will return NULL on fails, caller should check it,
otherwise will trigger a NULL dereference.
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: eda21f16a5ed ("NFC: Set MIU and RW values from CONNECT and CC LLCP frames")
Fixes: d646960f7986 ("NFC: Initial LLCP support")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sheng Lan [Thu, 28 Feb 2019 10:47:58 +0000 (18:47 +0800)]
net: netem: fix skb length BUG_ON in __skb_to_sgvec
[ Upstream commit
5845f706388a4cde0f6b80f9e5d33527e942b7d9 ]
It can be reproduced by following steps:
1. virtio_net NIC is configured with gso/tso on
2. configure nginx as http server with an index file bigger than 1M bytes
3. use tc netem to produce duplicate packets and delay:
tc qdisc add dev eth0 root netem delay 100ms 10ms 30% duplicate 90%
4. continually curl the nginx http server to get index file on client
5. BUG_ON is seen quickly
[
10258690.371129] kernel BUG at net/core/skbuff.c:4028!
[
10258690.371748] invalid opcode: 0000 [#1] SMP PTI
[
10258690.372094] CPU: 5 PID: 0 Comm: swapper/5 Tainted: G W 5.0.0-rc6 #2
[
10258690.372094] RSP: 0018:
ffffa05797b43da0 EFLAGS:
00010202
[
10258690.372094] RBP:
00000000000005ea R08:
0000000000000000 R09:
00000000000005ea
[
10258690.372094] R10:
ffffa0579334d800 R11:
00000000000002c0 R12:
0000000000000002
[
10258690.372094] R13:
0000000000000000 R14:
ffffa05793122900 R15:
ffffa0578f7cb028
[
10258690.372094] FS:
0000000000000000(0000) GS:
ffffa05797b40000(0000) knlGS:
0000000000000000
[
10258690.372094] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[
10258690.372094] CR2:
00007f1a6dc00868 CR3:
000000001000e000 CR4:
00000000000006e0
[
10258690.372094] Call Trace:
[
10258690.372094] <IRQ>
[
10258690.372094] skb_to_sgvec+0x11/0x40
[
10258690.372094] start_xmit+0x38c/0x520 [virtio_net]
[
10258690.372094] dev_hard_start_xmit+0x9b/0x200
[
10258690.372094] sch_direct_xmit+0xff/0x260
[
10258690.372094] __qdisc_run+0x15e/0x4e0
[
10258690.372094] net_tx_action+0x137/0x210
[
10258690.372094] __do_softirq+0xd6/0x2a9
[
10258690.372094] irq_exit+0xde/0xf0
[
10258690.372094] smp_apic_timer_interrupt+0x74/0x140
[
10258690.372094] apic_timer_interrupt+0xf/0x20
[
10258690.372094] </IRQ>
In __skb_to_sgvec(), the skb->len is not equal to the sum of the skb's
linear data size and nonlinear data size, thus BUG_ON triggered.
Because the skb is cloned and a part of nonlinear data is split off.
Duplicate packet is cloned in netem_enqueue() and may be delayed
some time in qdisc. When qdisc len reached the limit and returns
NET_XMIT_DROP, the skb will be retransmit later in write queue.
the skb will be fragmented by tso_fragment(), the limit size
that depends on cwnd and mss decrease, the skb's nonlinear
data will be split off. The length of the skb cloned by netem
will not be updated. When we use virtio_net NIC and invoke skb_to_sgvec(),
the BUG_ON trigger.
To fix it, netem returns NET_XMIT_SUCCESS to upper stack
when it clones a duplicate packet.
Fixes: 35d889d1 ("sch_netem: fix skb leak in netem_enqueue()")
Signed-off-by: Sheng Lan <lansheng@huawei.com>
Reported-by: Qin Ji <jiqin.ji@huawei.com>
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Paul Moore [Tue, 26 Feb 2019 00:06:06 +0000 (19:06 -0500)]
netlabel: fix out-of-bounds memory accesses
[ Upstream commit
5578de4834fe0f2a34fedc7374be691443396d1f ]
There are two array out-of-bounds memory accesses, one in
cipso_v4_map_lvl_valid(), the other in netlbl_bitmap_walk(). Both
errors are embarassingly simple, and the fixes are straightforward.
As a FYI for anyone backporting this patch to kernels prior to v4.8,
you'll want to apply the netlbl_bitmap_walk() patch to
cipso_v4_bitmap_walk() as netlbl_bitmap_walk() doesn't exist before
Linux v4.8.
Reported-by: Jann Horn <jannh@google.com>
Fixes: 446fda4f2682 ("[NetLabel]: CIPSOv4 engine")
Fixes: 3faa8f982f95 ("netlabel: Move bitmap manipulation functions to the NetLabel core.")
Signed-off-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Andrew Lunn [Thu, 28 Feb 2019 17:14:03 +0000 (18:14 +0100)]
net: dsa: mv88e6xxx: Fix u64 statistics
[ Upstream commit
6e46e2d821bb22b285ae8187959096b65d063b0d ]
The switch maintains u64 counters for the number of octets sent and
received. These are kept as two u32's which need to be combined. Fix
the combing, which wrongly worked on u16's.
Fixes: 80c4627b2719 ("dsa: mv88x6xxx: Refactor getting a single statistic")
Reported-by: Chris Healy <Chris.Healy@zii.aero>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Haiyang Zhang [Fri, 22 Feb 2019 18:25:03 +0000 (18:25 +0000)]
hv_netvsc: Fix IP header checksum for coalesced packets
[ Upstream commit
bf48648d650db1146b75b9bd358502431e86cf4f ]
Incoming packets may have IP header checksum verified by the host.
They may not have IP header checksum computed after coalescing.
This patch re-compute the checksum when necessary, otherwise the
packets may be dropped, because Linux network stack always checks it.
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Michael Chan [Wed, 27 Feb 2019 08:58:53 +0000 (03:58 -0500)]
bnxt_en: Drop oversize TX packets to prevent errors.
[ Upstream commit
2b3c6885386020b1b9d92d45e8349637e27d1f66 ]
There have been reports of oversize UDP packets being sent to the
driver to be transmitted, causing error conditions. The issue is
likely caused by the dst of the SKB switching between 'lo' with
64K MTU and the hardware device with a smaller MTU. Patches are
being proposed by Mahesh Bandewar <maheshb@google.com> to fix the
issue.
In the meantime, add a quick length check in the driver to prevent
the error. The driver uses the TX packet size as index to look up an
array to setup the TX BD. The array is large enough to support all MTU
sizes supported by the driver. The oversize TX packet causes the
driver to index beyond the array and put garbage values into the
TX BD. Add a simple check to prevent this.
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ido Schimmel [Sun, 3 Mar 2019 07:35:51 +0000 (07:35 +0000)]
team: Free BPF filter when unregistering netdev
[ Upstream commit
692c31bd4054212312396b1d303bffab2c5b93a7 ]
When team is used in loadbalance mode a BPF filter can be used to
provide a hash which will determine the Tx port.
When the netdev is later unregistered the filter is not freed which
results in memory leaks [1].
Fix by freeing the program and the corresponding filter when
unregistering the netdev.
[1]
unreferenced object 0xffff8881dbc47cc8 (size 16):
comm "teamd", pid 3068, jiffies
4294997779 (age 438.247s)
hex dump (first 16 bytes):
a3 00 6b 6b 6b 6b 6b 6b 88 a5 82 e1 81 88 ff ff ..kkkkkk........
backtrace:
[<
000000008a3b47e3>] team_nl_cmd_options_set+0x88f/0x11b0
[<
00000000c4f4f27e>] genl_family_rcv_msg+0x78f/0x1080
[<
00000000610ef838>] genl_rcv_msg+0xca/0x170
[<
00000000a281df93>] netlink_rcv_skb+0x132/0x380
[<
000000004d9448a2>] genl_rcv+0x29/0x40
[<
000000000321b2f4>] netlink_unicast+0x4c0/0x690
[<
000000008c25dffb>] netlink_sendmsg+0x929/0xe10
[<
00000000068298c5>] sock_sendmsg+0xc8/0x110
[<
0000000082a61ff0>] ___sys_sendmsg+0x77a/0x8f0
[<
00000000663ae29d>] __sys_sendmsg+0xf7/0x250
[<
0000000027c5f11a>] do_syscall_64+0x14d/0x610
[<
000000006cfbc8d3>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<
00000000e23197e2>] 0xffffffffffffffff
unreferenced object 0xffff8881e182a588 (size 2048):
comm "teamd", pid 3068, jiffies
4294997780 (age 438.247s)
hex dump (first 32 bytes):
20 00 00 00 02 00 00 00 30 00 00 00 28 f0 ff ff .......0...(...
07 00 00 00 00 00 00 00 28 00 00 00 00 00 00 00 ........(.......
backtrace:
[<
000000002daf01fb>] lb_bpf_func_set+0x45c/0x6d0
[<
000000008a3b47e3>] team_nl_cmd_options_set+0x88f/0x11b0
[<
00000000c4f4f27e>] genl_family_rcv_msg+0x78f/0x1080
[<
00000000610ef838>] genl_rcv_msg+0xca/0x170
[<
00000000a281df93>] netlink_rcv_skb+0x132/0x380
[<
000000004d9448a2>] genl_rcv+0x29/0x40
[<
000000000321b2f4>] netlink_unicast+0x4c0/0x690
[<
000000008c25dffb>] netlink_sendmsg+0x929/0xe10
[<
00000000068298c5>] sock_sendmsg+0xc8/0x110
[<
0000000082a61ff0>] ___sys_sendmsg+0x77a/0x8f0
[<
00000000663ae29d>] __sys_sendmsg+0xf7/0x250
[<
0000000027c5f11a>] do_syscall_64+0x14d/0x610
[<
000000006cfbc8d3>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<
00000000e23197e2>] 0xffffffffffffffff
Fixes: 01d7f30a9f96 ("team: add loadbalance mode")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Amit Cohen <amitc@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Kai-Heng Feng [Mon, 4 Mar 2019 07:00:03 +0000 (15:00 +0800)]
sky2: Disable MSI on Dell Inspiron 1545 and Gateway P-79
[ Upstream commit
b33b7cd6fd86478dd2890a9abeb6f036aa01fdf7 ]
Some sky2 chips fire IRQ after S3, before the driver is fully resumed:
[ 686.804877] do_IRQ: 1.37 No irq handler for vector
This is likely a platform bug that device isn't fully quiesced during
S3. Use MSI-X, maskable MSI or INTx can prevent this issue from
happening.
Since MSI-X and maskable MSI are not supported by this device, fallback
to use INTx on affected platforms.
BugLink: https://bugs.launchpad.net/bugs/1807259
BugLink: https://bugs.launchpad.net/bugs/1809843
Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
YueHaibing [Sat, 2 Mar 2019 02:34:55 +0000 (10:34 +0800)]
net-sysfs: Fix mem leak in netdev_register_kobject
[ Upstream commit
895a5e96dbd6386c8e78e5b78e067dcc67b7f0ab ]
syzkaller report this:
BUG: memory leak
unreferenced object 0xffff88837a71a500 (size 256):
comm "syz-executor.2", pid 9770, jiffies
4297825125 (age 17.843s)
hex dump (first 32 bytes):
00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N..........
ff ff ff ff ff ff ff ff 20 c0 ef 86 ff ff ff ff ........ .......
backtrace:
[<
00000000db12624b>] netdev_register_kobject+0x124/0x2e0 net/core/net-sysfs.c:1751
[<
00000000dc49a994>] register_netdevice+0xcc1/0x1270 net/core/dev.c:8516
[<
00000000e5f3fea0>] tun_set_iff drivers/net/tun.c:2649 [inline]
[<
00000000e5f3fea0>] __tun_chr_ioctl+0x2218/0x3d20 drivers/net/tun.c:2883
[<
000000001b8ac127>] vfs_ioctl fs/ioctl.c:46 [inline]
[<
000000001b8ac127>] do_vfs_ioctl+0x1a5/0x10e0 fs/ioctl.c:690
[<
0000000079b269f8>] ksys_ioctl+0x89/0xa0 fs/ioctl.c:705
[<
00000000de649beb>] __do_sys_ioctl fs/ioctl.c:712 [inline]
[<
00000000de649beb>] __se_sys_ioctl fs/ioctl.c:710 [inline]
[<
00000000de649beb>] __x64_sys_ioctl+0x74/0xb0 fs/ioctl.c:710
[<
000000007ebded1e>] do_syscall_64+0xc8/0x580 arch/x86/entry/common.c:290
[<
00000000db315d36>] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[<
00000000115be9bb>] 0xffffffffffffffff
It should call kset_unregister to free 'dev->queues_kset'
in error path of register_queue_kobjects, otherwise will cause a mem leak.
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: 1d24eb4815d1 ("xps: Transmit Packet Steering")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ido Schimmel [Sun, 3 Mar 2019 07:34:57 +0000 (07:34 +0000)]
ip6mr: Do not call __IP6_INC_STATS() from preemptible context
[ Upstream commit
87c11f1ddbbad38ad8bad47af133a8208985fbdf ]
Similar to commit
44f49dd8b5a6 ("ipmr: fix possible race resulting from
improper usage of IP_INC_STATS_BH() in preemptible context."), we cannot
assume preemption is disabled when incrementing the counter and
accessing a per-CPU variable.
Preemption can be enabled when we add a route in process context that
corresponds to packets stored in the unresolved queue, which are then
forwarded using this route [1].
Fix this by using IP6_INC_STATS() which takes care of disabling
preemption on architectures where it is needed.
[1]
[ 157.451447] BUG: using __this_cpu_add() in preemptible [
00000000] code: smcrouted/2314
[ 157.460409] caller is ip6mr_forward2+0x73e/0x10e0
[ 157.460434] CPU: 3 PID: 2314 Comm: smcrouted Not tainted
5.0.0-rc7-custom-03635-g22f2712113f1 #1336
[ 157.460449] Hardware name: Mellanox Technologies Ltd. MSN2100-CB2FO/SA001017, BIOS 5.6.5 06/07/2016
[ 157.460461] Call Trace:
[ 157.460486] dump_stack+0xf9/0x1be
[ 157.460553] check_preemption_disabled+0x1d6/0x200
[ 157.460576] ip6mr_forward2+0x73e/0x10e0
[ 157.460705] ip6_mr_forward+0x9a0/0x1510
[ 157.460771] ip6mr_mfc_add+0x16b3/0x1e00
[ 157.461155] ip6_mroute_setsockopt+0x3cb/0x13c0
[ 157.461384] do_ipv6_setsockopt.isra.8+0x348/0x4060
[ 157.462013] ipv6_setsockopt+0x90/0x110
[ 157.462036] rawv6_setsockopt+0x4a/0x120
[ 157.462058] __sys_setsockopt+0x16b/0x340
[ 157.462198] __x64_sys_setsockopt+0xbf/0x160
[ 157.462220] do_syscall_64+0x14d/0x610
[ 157.462349] entry_SYSCALL_64_after_hwframe+0x49/0xbe
Fixes: 0912ea38de61 ("[IPV6] MROUTE: Add stats in multicast routing module method ip6_mr_forward().")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reported-by: Amit Cohen <amitc@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Qing Xia [Fri, 1 Feb 2019 06:59:46 +0000 (14:59 +0800)]
staging: android: ion: fix sys heap pool's gfp_flags
commit
9bcf065e28122588a6cbee08cf847826dacbb438 upstream.
In the first loop, gfp_flags will be modified to high_order_gfp_flags,
and there will be no chance to change back to low_order_gfp_flags.
Fixes: e7f63771b60e ("ION: Sys_heap: Add cached pool to spead up cached buffer alloc")
Signed-off-by: Qing Xia <saberlily.xia@hisilicon.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Jing Xia <jing.xia@unisoc.com>
Reviewed-by: Yuming Han <yuming.han@unisoc.com>
Reviewed-by: Zhaoyang Huang <zhaoyang.huang@unisoc.com>
Reviewed-by: Orson Zhai <orson.zhai@unisoc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ajay Singh [Thu, 7 Feb 2019 11:28:58 +0000 (11:28 +0000)]
staging: wilc1000: fix to set correct value for 'vif_num'
commit
dda037057a572f5c82ac2499eb4e6fb17600ba3e upstream.
Set correct value in '->vif_num' for the total number of interfaces and
set '->idx' value using 'i'.
Fixes: 735bb39ca3be ("staging: wilc1000: simplify vif[i]->ndev accesses")
Fixes: 0e490657c721 ("staging: wilc1000: Fix problem with wrong vif index")
Cc: <stable@vger.kernel.org>
Suggested-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Gustavo A. R. Silva [Tue, 12 Feb 2019 18:44:50 +0000 (12:44 -0600)]
staging: comedi: ni_660x: fix missing break in switch statement
commit
479826cc86118e0d87e5cefb3df5b748e0480924 upstream.
Add missing break statement in order to prevent the code from falling
through to the default case and return -EINVAL every time.
This bug was found thanks to the ongoing efforts to enable
-Wimplicit-fallthrough.
Fixes: aa94f2888825 ("staging: comedi: ni_660x: tidy up ni_660x_set_pfi_routing()")
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Thu, 7 Mar 2019 17:06:23 +0000 (18:06 +0100)]
isdn: isdn_tty: fix build warning of strncpy
Not upstream as isdn is long deleted.
Fix up a strncpy build warning for isdn_tty_suspend() using strscpy.
It's not like anyone uses this code anyway, and this gets rid of a build
warnings so that we can see real warnings as they pop up over time.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Thu, 7 Mar 2019 16:02:50 +0000 (17:02 +0100)]
ncpfs: fix build warning of strncpy
Not upstream as ncpfs is long deleted.
Fix up two strncpy build warnings in ncp_get_charsets() by using strscpy
and the max size of the array.
It's not like anyone uses this code anyway, and this gets rid of two
build warnings so that we can see real warnings as they pop up over
time.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Viresh Kumar [Fri, 25 Jan 2019 07:23:07 +0000 (12:53 +0530)]
cpufreq: Use struct kobj_attribute instead of struct global_attr
commit
625c85a62cb7d3c79f6e16de3cfa972033658250 upstream.
The cpufreq_global_kobject is created using kobject_create_and_add()
helper, which assigns the kobj_type as dynamic_kobj_ktype and show/store
routines are set to kobj_attr_show() and kobj_attr_store().
These routines pass struct kobj_attribute as an argument to the
show/store callbacks. But all the cpufreq files created using the
cpufreq_global_kobject expect the argument to be of type struct
attribute. Things work fine currently as no one accesses the "attr"
argument. We may not see issues even if the argument is used, as struct
kobj_attribute has struct attribute as its first element and so they
will both get same address.
But this is logically incorrect and we should rather use struct
kobj_attribute instead of struct global_attr in the cpufreq core and
drivers and the show/store callbacks should take struct kobj_attribute
as argument instead.
This bug is caught using CFI CLANG builds in android kernel which
catches mismatch in function prototypes for such callbacks.
Reported-by: Donghee Han <dh.han@samsung.com>
Reported-by: Sangkyu Kim <skwith.kim@samsung.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Mans Rullgard [Thu, 14 Feb 2019 19:45:33 +0000 (19:45 +0000)]
USB: serial: ftdi_sio: add ID for Hjelmslund Electronics USB485
commit
8d7fa3d4ea3f0ca69554215e87411494e6346fdc upstream.
This adds the USB ID of the Hjelmslund Electronics USB485 Iso stick.
Signed-off-by: Mans Rullgard <mans@mansr.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ivan Mironov [Wed, 6 Feb 2019 16:14:13 +0000 (21:14 +0500)]
USB: serial: cp210x: add ID for Ingenico 3070
commit
dd9d3d86b08d6a106830364879c42c78db85389c upstream.
Here is how this device appears in kernel log:
usb 3-1: new full-speed USB device number 18 using xhci_hcd
usb 3-1: New USB device found, idVendor=0b00, idProduct=3070
usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
usb 3-1: Product: Ingenico 3070
usb 3-1: Manufacturer: Silicon Labs
usb 3-1: SerialNumber: 0001
Apparently this is a POS terminal with embedded USB-to-Serial converter.
Cc: stable@vger.kernel.org
Signed-off-by: Ivan Mironov <mironov.ivan@gmail.com>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Daniele Palmas [Wed, 20 Feb 2019 10:43:17 +0000 (11:43 +0100)]
USB: serial: option: add Telit ME910 ECM composition
commit
6431866b6707d27151be381252d6eef13025cfce upstream.
This patch adds Telit ME910 family ECM composition 0x1102.
Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Tue, 5 Mar 2019 16:57:07 +0000 (17:57 +0100)]
Linux 4.9.162
Andy Lutomirski [Sat, 23 Feb 2019 01:17:04 +0000 (17:17 -0800)]
x86/uaccess: Don't leak the AC flag into __put_user() value evaluation
commit
2a418cf3f5f1caf911af288e978d61c9844b0695 upstream.
When calling __put_user(foo(), ptr), the __put_user() macro would call
foo() in between __uaccess_begin() and __uaccess_end(). If that code
were buggy, then those bugs would be run without SMAP protection.
Fortunately, there seem to be few instances of the problem in the
kernel. Nevertheless, __put_user() should be fixed to avoid doing this.
Therefore, evaluate __put_user()'s argument before setting AC.
This issue was noticed when an objtool hack by Peter Zijlstra complained
about genregs_get() and I compared the assembly output to the C source.
[ bp: Massage commit message and fixed up whitespace. ]
Fixes: 11f1a4b9755f ("x86: reorganize SMAP handling in user space accesses")
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/20190225125231.845656645@infradead.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jann Horn [Wed, 27 Feb 2019 20:29:52 +0000 (21:29 +0100)]
mm: enforce min addr even if capable() in expand_downwards()
commit
0a1d52994d440e21def1c2174932410b4f2a98a1 upstream.
security_mmap_addr() does a capability check with current_cred(), but
we can reach this code from contexts like a VFS write handler where
current_cred() must not be used.
This can be abused on systems without SMAP to make NULL pointer
dereferences exploitable again.
Fixes: 8869477a49c3 ("security: protect from stack expansion into low vm addresses")
Cc: stable@kernel.org
Signed-off-by: Jann Horn <jannh@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Jonathan Neuschäfer [Sun, 10 Feb 2019 17:31:07 +0000 (18:31 +0100)]
mmc: spi: Fix card detection during probe
commit
c9bd505dbd9d3dc80c496f88eafe70affdcf1ba6 upstream.
When using the mmc_spi driver with a card-detect pin, I noticed that the
card was not detected immediately after probe, but only after it was
unplugged and plugged back in (and the CD IRQ fired).
The call tree looks something like this:
mmc_spi_probe
mmc_add_host
mmc_start_host
_mmc_detect_change
mmc_schedule_delayed_work(&host->detect, 0)
mmc_rescan
host->bus_ops->detect(host)
mmc_detect
_mmc_detect_card_removed
host->ops->get_cd(host)
mmc_gpio_get_cd -> -ENOSYS (ctx->cd_gpio not set)
mmc_gpiod_request_cd
ctx->cd_gpio = desc
To fix this issue, call mmc_detect_change after the card-detect GPIO/IRQ
is registered.
Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Seth Forshee [Thu, 28 Sep 2017 13:33:39 +0000 (09:33 -0400)]
powerpc: Always initialize input array when calling epapr_hypercall()
commit
186b8f1587c79c2fa04bfa392fdf084443e398c1 upstream.
Several callers to epapr_hypercall() pass an uninitialized stack
allocated array for the input arguments, presumably because they
have no input arguments. However this can produce errors like
this one
arch/powerpc/include/asm/epapr_hcalls.h:470:42: error: 'in' may be used uninitialized in this function [-Werror=maybe-uninitialized]
unsigned long register r3 asm("r3") = in[0];
~~^~~
Fix callers to this function to always zero-initialize the input
arguments array to prevent this.
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: "A. Wilcox" <awilfox@adelielinux.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Vitaly Kuznetsov [Mon, 7 Jan 2019 18:44:51 +0000 (19:44 +0100)]
KVM: nSVM: clear events pending from svm_complete_interrupts() when exiting to L1
[ Upstream commit
619ad846fc3452adaf71ca246c5aa711e2055398 ]
kvm-unit-tests' eventinj "NMI failing on IDT" test results in NMI being
delivered to the host (L1) when it's running nested. The problem seems to
be: svm_complete_interrupts() raises 'nmi_injected' flag but later we
decide to reflect EXIT_NPF to L1. The flag remains pending and we do NMI
injection upon entry so it got delivered to L1 instead of L2.
It seems that VMX code solves the same issue in prepare_vmcs12(), this was
introduced with code refactoring in commit
5f3d5799974b ("KVM: nVMX: Rework
event injection and recovery").
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Suravee Suthikulpanit [Tue, 22 Jan 2019 10:25:13 +0000 (10:25 +0000)]
svm: Fix AVIC incomplete IPI emulation
[ Upstream commit
bb218fbcfaaa3b115d4cd7a43c0ca164f3a96e57 ]
In case of incomplete IPI with invalid interrupt type, the current
SVM driver does not properly emulate the IPI, and fails to boot
FreeBSD guests with multiple vcpus when enabling AVIC.
Fix this by update APIC ICR high/low registers, which also
emulate sending the IPI.
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Chaitanya Tata [Fri, 18 Jan 2019 21:47:47 +0000 (03:17 +0530)]
cfg80211: extend range deviation for DMG
[ Upstream commit
93183bdbe73bbdd03e9566c8dc37c9d06b0d0db6 ]
Recently, DMG frequency bands have been extended till 71GHz, so extend
the range check till 20GHz (45-71GHZ), else some channels will be marked
as disabled.
Signed-off-by: Chaitanya Tata <Chaitanya.Tata@bluwireless.co.uk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Mathieu Malaterre [Thu, 24 Jan 2019 18:19:57 +0000 (19:19 +0100)]
mac80211: Add attribute aligned(2) to struct 'action'
[ Upstream commit
7c53eb5d87bc21464da4268c3c0c47457b6d9c9b ]
During refactor in commit
9e478066eae4 ("mac80211: fix MU-MIMO
follow-MAC mode") a new struct 'action' was declared with packed
attribute as:
struct {
struct ieee80211_hdr_3addr hdr;
u8 category;
u8 action_code;
} __packed action;
But since struct 'ieee80211_hdr_3addr' is declared with an aligned
keyword as:
struct ieee80211_hdr {
__le16 frame_control;
__le16 duration_id;
u8 addr1[ETH_ALEN];
u8 addr2[ETH_ALEN];
u8 addr3[ETH_ALEN];
__le16 seq_ctrl;
u8 addr4[ETH_ALEN];
} __packed __aligned(2);
Solve the ambiguity of placing aligned structure in a packed one by
adding the aligned(2) attribute to struct 'action'.
This removes the following warning (W=1):
net/mac80211/rx.c:234:2: warning: alignment 1 of 'struct <anonymous>' is less than 2 [-Wpacked-not-aligned]
Cc: Johannes Berg <johannes.berg@intel.com>
Suggested-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Mathieu Malaterre <malat@debian.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Balaji Pothunoori [Mon, 21 Jan 2019 07:00:43 +0000 (12:30 +0530)]
mac80211: don't initiate TDLS connection if station is not associated to AP
[ Upstream commit
7ed5285396c257fd4070b1e29e7b2341aae2a1ce ]
Following call trace is observed while adding TDLS peer entry in driver
during TDLS setup.
Call Trace:
[<
c1301476>] dump_stack+0x47/0x61
[<
c10537d2>] __warn+0xe2/0x100
[<
fa22415f>] ? sta_apply_parameters+0x49f/0x550 [mac80211]
[<
c1053895>] warn_slowpath_null+0x25/0x30
[<
fa22415f>] sta_apply_parameters+0x49f/0x550 [mac80211]
[<
fa20ad42>] ? sta_info_alloc+0x1c2/0x450 [mac80211]
[<
fa224623>] ieee80211_add_station+0xe3/0x160 [mac80211]
[<
c1876fe3>] nl80211_new_station+0x273/0x420
[<
c170f6d9>] genl_rcv_msg+0x219/0x3c0
[<
c170f4c0>] ? genl_rcv+0x30/0x30
[<
c170ee7e>] netlink_rcv_skb+0x8e/0xb0
[<
c170f4ac>] genl_rcv+0x1c/0x30
[<
c170e8aa>] netlink_unicast+0x13a/0x1d0
[<
c170ec18>] netlink_sendmsg+0x2d8/0x390
[<
c16c5acd>] sock_sendmsg+0x2d/0x40
[<
c16c6369>] ___sys_sendmsg+0x1d9/0x1e0
Fixing this by allowing TDLS setup request only when we have completed
association.
Signed-off-by: Balaji Pothunoori <bpothuno@codeaurora.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Thomas Falcon [Thu, 24 Jan 2019 17:17:01 +0000 (11:17 -0600)]
ibmveth: Do not process frames after calling napi_reschedule
[ Upstream commit
e95d22c69b2c130ccce257b84daf283fd82d611e ]
The IBM virtual ethernet driver's polling function continues
to process frames after rescheduling NAPI, resulting in a warning
if it exhausted its budget. Do not restart polling after calling
napi_reschedule. Instead let frames be processed in the following
instance.
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>
Zhang Run [Thu, 24 Jan 2019 05:48:49 +0000 (13:48 +0800)]
net: usb: asix: ax88772_bind return error when hw_reset fail
[ Upstream commit
6eea3527e68acc22483f4763c8682f223eb90029 ]
The ax88772_bind() should return error code immediately when the PHY
was not reset properly through ax88772a_hw_reset().
Otherwise, The asix_get_phyid() will block when get the PHY
Identifier from the PHYSID1 MII registers through asix_mdio_read()
due to the PHY isn't ready. Furthermore, it will produce a lot of
error message cause system crash.As follows:
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to write
reg index 0x0000: -71
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to send
software reset:
ffffffb9
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to write
reg index 0x0000: -71
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to enable
software MII access
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read
reg index 0x0000: -71
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to write
reg index 0x0000: -71
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to enable
software MII access
asix 1-1:1.0 (unnamed net_device) (uninitialized): Failed to read
reg index 0x0000: -71
...
Signed-off-by: Zhang Run <zhang.run@zte.com.cn>
Reviewed-by: Yang Wei <yang.wei9@zte.com.cn>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Atsushi Nemoto [Mon, 21 Jan 2019 08:26:41 +0000 (17:26 +0900)]
net: altera_tse: fix connect_local_phy error path
[ Upstream commit
17b42a20d7ca59377788c6a2409e77569570cc10 ]
The connect_local_phy should return NULL (not negative errno) on
error, since its caller expects it.
Signed-off-by: Atsushi Nemoto <atsushi.nemoto@sord.co.jp>
Acked-by: Thor Thayer <thor.thayer@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Varun Prakash [Sat, 12 Jan 2019 16:44:30 +0000 (22:14 +0530)]
scsi: csiostor: fix NULL pointer dereference in csio_vport_set_state()
[ Upstream commit
fe35a40e675473eb65f2f5462b82770f324b5689 ]
Assign fc_vport to ln->fc_vport before calling csio_fcoe_alloc_vnp() to
avoid a NULL pointer dereference in csio_vport_set_state().
ln->fc_vport is dereferenced in csio_vport_set_state().
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Ernesto A. Fernández [Mon, 8 Oct 2018 23:58:23 +0000 (20:58 -0300)]
direct-io: allow direct writes to empty inodes
[ Upstream commit
8b9433eb4de3c26a9226c981c283f9f4896ae030 ]
On a DIO_SKIP_HOLES filesystem, the ->get_block() method is currently
not allowed to create blocks for an empty inode. This confusion comes
from trying to bit shift a negative number, so check the size of the
inode first.
The problem is most visible for hfsplus, because the fallback to
buffered I/O doesn't happen and the write fails with EIO. This is in
part the fault of the module, because it gives a wrong return value on
->get_block(); that will be fixed in a separate patch.
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Ernesto A. Fernández <ernesto.mnd.fernandez@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Tomonori Sakita [Mon, 21 Jan 2019 08:34:16 +0000 (17:34 +0900)]
serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling
[ Upstream commit
815d835b7ba46685c316b000013367dacb2b461b ]
Using over-sampling ratio, lpuart can accept baud rate upto uartclk / 4.
Signed-off-by: Tomonori Sakita <tomonori.sakita@sord.co.jp>
Signed-off-by: Atsushi Nemoto <atsushi.nemoto@sord.co.jp>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Xie Yongji [Thu, 29 Nov 2018 12:50:30 +0000 (20:50 +0800)]
locking/rwsem: Fix (possible) missed wakeup
[ Upstream commit
e158488be27b157802753a59b336142dc0eb0380 ]
Because wake_q_add() can imply an immediate wakeup (cmpxchg failure
case), we must not rely on the wakeup being delayed. However, commit:
e38513905eea ("locking/rwsem: Rework zeroing reader waiter->task")
relies on exactly that behaviour in that the wakeup must not happen
until after we clear waiter->task.
[ peterz: Added changelog. ]
Signed-off-by: Xie Yongji <xieyongji@baidu.com>
Signed-off-by: Zhang Yu <zhangyu31@baidu.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: e38513905eea ("locking/rwsem: Rework zeroing reader waiter->task")
Link: https://lkml.kernel.org/r/1543495830-2644-1-git-send-email-xieyongji@baidu.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Bob Copeland [Thu, 17 Jan 2019 21:32:42 +0000 (16:32 -0500)]
mac80211: fix miscounting of ttl-dropped frames
[ Upstream commit
a0dc02039a2ee54fb4ae400e0b755ed30e73e58c ]
In ieee80211_rx_h_mesh_fwding, we increment the 'dropped_frames_ttl'
counter when we decrement the ttl to zero. For unicast frames
destined for other hosts, we stop processing the frame at that point.
For multicast frames, we do not rebroadcast it in this case, but we
do pass the frame up the stack to process it on this STA. That
doesn't match the usual definition of "dropped," so don't count
those as such.
With this change, something like `ping6 -i0.2 ff02::1%mesh0` from a
peer in a ttl=1 network no longer increments the counter rapidly.
Signed-off-by: Bob Copeland <bobcopeland@fb.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Aaron Hill [Mon, 24 Dec 2018 19:23:36 +0000 (14:23 -0500)]
drivers: thermal: int340x_thermal: Fix sysfs race condition
[ Upstream commit
129699bb8c7572106b5bbb2407c2daee4727ccad ]
Changes since V1:
* Use dev_info instead of printk
* Use dev_warn instead of BUG_ON
Previously, sysfs_create_group was called before all initialization had
fully run - specifically, before pci_set_drvdata was called. Since the
sysctl group is visible to userspace as soon as sysfs_create_group
returns, a small window of time existed during which a process could read
from an uninitialized/partially-initialized device.
This commit moves the creation of the sysctl group to after all
initialized is completed. This ensures that it's impossible for
userspace to read from a sysctl file before initialization has fully
completed.
To catch any future regressions, I've added a check to ensure
that proc_thermal_emum_mode is never PROC_THERMAL_NONE when a process
tries to read from a sysctl file. Previously, the aforementioned race
condition could result in the 'else' branch
running while PROC_THERMAL_NONE was set,
leading to a null pointer deference.
Signed-off-by: Aaron Hill <aa1ronham@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Eugeniy Paltsev [Thu, 13 Dec 2018 15:42:57 +0000 (18:42 +0300)]
ARC: fix __ffs return value to avoid build warnings
[ Upstream commit
4e868f8419cb4cb558c5d428e7ab5629cef864c7 ]
| CC mm/nobootmem.o
|In file included from ./include/asm-generic/bug.h:18:0,
| from ./arch/arc/include/asm/bug.h:32,
| from ./include/linux/bug.h:5,
| from ./include/linux/mmdebug.h:5,
| from ./include/linux/gfp.h:5,
| from ./include/linux/slab.h:15,
| from mm/nobootmem.c:14:
|mm/nobootmem.c: In function '__free_pages_memory':
|./include/linux/kernel.h:845:29: warning: comparison of distinct pointer types lacks a cast
| (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
| ^
|./include/linux/kernel.h:859:4: note: in expansion of macro '__typecheck'
| (__typecheck(x, y) && __no_side_effects(x, y))
| ^~~~~~~~~~~
|./include/linux/kernel.h:869:24: note: in expansion of macro '__safe_cmp'
| __builtin_choose_expr(__safe_cmp(x, y), \
| ^~~~~~~~~~
|./include/linux/kernel.h:878:19: note: in expansion of macro '__careful_cmp'
| #define min(x, y) __careful_cmp(x, y, <)
| ^~~~~~~~~~~~~
|mm/nobootmem.c:104:11: note: in expansion of macro 'min'
| order = min(MAX_ORDER - 1UL, __ffs(start));
Change __ffs return value from 'int' to 'unsigned long' as it
is done in other implementations (like asm-generic, x86, etc...)
to avoid build-time warnings in places where type is strictly
checked.
As __ffs may return values in [0-31] interval changing return
type to unsigned is valid.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Silvio Cesare [Tue, 15 Jan 2019 03:27:27 +0000 (04:27 +0100)]
ASoC: imx-audmux: change snprintf to scnprintf for possible overflow
[ Upstream commit
c407cd008fd039320d147088b52d0fa34ed3ddcb ]
Change snprintf to scnprintf. There are generally two cases where using
snprintf causes problems.
1) Uses of size += snprintf(buf, SIZE - size, fmt, ...)
In this case, if snprintf would have written more characters than what the
buffer size (SIZE) is, then size will end up larger than SIZE. In later
uses of snprintf, SIZE - size will result in a negative number, leading
to problems. Note that size might already be too large by using
size = snprintf before the code reaches a case of size += snprintf.
2) If size is ultimately used as a length parameter for a copy back to user
space, then it will potentially allow for a buffer overflow and information
disclosure when size is greater than SIZE. When the size is used to index
the buffer directly, we can have memory corruption. This also means when
size = snprintf... is used, it may also cause problems since size may become
large. Copying to userspace is mitigated by the HARDENED_USERCOPY kernel
configuration.
The solution to these issues is to use scnprintf which returns the number of
characters actually written to the buffer, so the size variable will never
exceed SIZE.
Signed-off-by: Silvio Cesare <silvio.cesare@gmail.com>
Cc: Timur Tabi <timur@kernel.org>
Cc: Nicolin Chen <nicoleotsuka@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Xiubo Li <Xiubo.Lee@gmail.com>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Acked-by: Nicolin Chen <nicoleotsuka@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Silvio Cesare [Sat, 12 Jan 2019 15:28:43 +0000 (16:28 +0100)]
ASoC: dapm: change snprintf to scnprintf for possible overflow
[ Upstream commit
e581e151e965bf1f2815dd94620b638fec4d0a7e ]
Change snprintf to scnprintf. There are generally two cases where using
snprintf causes problems.
1) Uses of size += snprintf(buf, SIZE - size, fmt, ...)
In this case, if snprintf would have written more characters than what the
buffer size (SIZE) is, then size will end up larger than SIZE. In later
uses of snprintf, SIZE - size will result in a negative number, leading
to problems. Note that size might already be too large by using
size = snprintf before the code reaches a case of size += snprintf.
2) If size is ultimately used as a length parameter for a copy back to user
space, then it will potentially allow for a buffer overflow and information
disclosure when size is greater than SIZE. When the size is used to index
the buffer directly, we can have memory corruption. This also means when
size = snprintf... is used, it may also cause problems since size may become
large. Copying to userspace is mitigated by the HARDENED_USERCOPY kernel
configuration.
The solution to these issues is to use scnprintf which returns the number of
characters actually written to the buffer, so the size variable will never
exceed SIZE.
Signed-off-by: Silvio Cesare <silvio.cesare@gmail.com>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Dan Carpenter [Fri, 21 Dec 2018 20:42:52 +0000 (23:42 +0300)]
usb: gadget: Potential NULL dereference on allocation error
[ Upstream commit
df28169e1538e4a8bcd8b779b043e5aa6524545c ]
The source_sink_alloc_func() function is supposed to return error
pointers on error. The function is called from usb_get_function() which
doesn't check for NULL returns so it would result in an Oops.
Of course, in the current kernel, small allocations always succeed so
this doesn't affect runtime.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Zeng Tao [Wed, 26 Dec 2018 11:22:00 +0000 (19:22 +0800)]
usb: dwc3: gadget: Fix the uninitialized link_state when udc starts
[ Upstream commit
88b1bb1f3b88e0bf20b05d543a53a5b99bd7ceb6 ]
Currently the link_state is uninitialized and the default value is 0(U0)
before the first time we start the udc, and after we start the udc then
stop the udc, the link_state will be undefined.
We may have the following warnings if we start the udc again with
an undefined link_state:
WARNING: CPU: 0 PID: 327 at drivers/usb/dwc3/gadget.c:294 dwc3_send_gadget_ep_cmd+0x304/0x308
dwc3
100e0000.hidwc3_0: wakeup failed --> -22
[...]
Call Trace:
[<
c010f270>] (unwind_backtrace) from [<
c010b3d8>] (show_stack+0x10/0x14)
[<
c010b3d8>] (show_stack) from [<
c034a4dc>] (dump_stack+0x84/0x98)
[<
c034a4dc>] (dump_stack) from [<
c0118000>] (__warn+0xe8/0x100)
[<
c0118000>] (__warn) from [<
c0118050>](warn_slowpath_fmt+0x38/0x48)
[<
c0118050>] (warn_slowpath_fmt) from [<
c0442ec0>](dwc3_send_gadget_ep_cmd+0x304/0x308)
[<
c0442ec0>] (dwc3_send_gadget_ep_cmd) from [<
c0445e68>](dwc3_ep0_start_trans+0x48/0xf4)
[<
c0445e68>] (dwc3_ep0_start_trans) from [<
c0446750>](dwc3_ep0_out_start+0x64/0x80)
[<
c0446750>] (dwc3_ep0_out_start) from [<
c04451c0>](__dwc3_gadget_start+0x1e0/0x278)
[<
c04451c0>] (__dwc3_gadget_start) from [<
c04452e0>](dwc3_gadget_start+0x88/0x10c)
[<
c04452e0>] (dwc3_gadget_start) from [<
c045ee54>](udc_bind_to_driver+0x88/0xbc)
[<
c045ee54>] (udc_bind_to_driver) from [<
c045f29c>](usb_gadget_probe_driver+0xf8/0x140)
[<
c045f29c>] (usb_gadget_probe_driver) from [<
bf005424>](gadget_dev_desc_UDC_store+0xac/0xc4 [libcomposite])
[<
bf005424>] (gadget_dev_desc_UDC_store [libcomposite]) from[<
c023d8e0>] (configfs_write_file+0xd4/0x160)
[<
c023d8e0>] (configfs_write_file) from [<
c01d51e8>] (__vfs_write+0x1c/0x114)
[<
c01d51e8>] (__vfs_write) from [<
c01d5ff4>] (vfs_write+0xa4/0x168)
[<
c01d5ff4>] (vfs_write) from [<
c01d6d40>] (SyS_write+0x3c/0x90)
[<
c01d6d40>] (SyS_write) from [<
c0107400>] (ret_fast_syscall+0x0/0x3c)
Signed-off-by: Zeng Tao <prime.zeng@hisilicon.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Bo He [Mon, 14 Jan 2019 07:48:32 +0000 (09:48 +0200)]
usb: dwc3: gadget: synchronize_irq dwc irq in suspend
[ Upstream commit
01c10880d24291a96a4ab0da773e3c5ce4d12da8 ]
We see dwc3 endpoint stopped by unwanted irq during
suspend resume test, which is caused dwc3 ep can't be started
with error "No Resource".
Here, add synchronize_irq before suspend to sync the
pending IRQ handlers complete.
Signed-off-by: Bo He <bo.he@intel.com>
Signed-off-by: Yu Wang <yu.y.wang@intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Dan Carpenter [Mon, 17 Dec 2018 07:02:42 +0000 (10:02 +0300)]
thermal: int340x_thermal: Fix a NULL vs IS_ERR() check
[ Upstream commit
3fe931b31a4078395c1967f0495dcc9e5ec6b5e3 ]
The intel_soc_dts_iosf_init() function doesn't return NULL, it returns
error pointers.
Fixes: 4d0dd6c1576b ("Thermal/int340x/processor_thermal: Enable auxiliary DTS for Braswell")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Dan Carpenter [Fri, 21 Dec 2018 09:06:58 +0000 (12:06 +0300)]
ALSA: compress: prevent potential divide by zero bugs
[ Upstream commit
678e2b44c8e3fec3afc7202f1996a4500a50be93 ]
The problem is seen in the q6asm_dai_compr_set_params() function:
ret = q6asm_map_memory_regions(dir, prtd->audio_client, prtd->phys,
(prtd->pcm_size / prtd->periods),
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
prtd->periods);
In this code prtd->pcm_size is the buffer_size and prtd->periods comes
from params->buffer.fragments. If we allow the number of fragments to
be zero then it results in a divide by zero bug. One possible fix would
be to use prtd->pcm_count directly instead of using the division to
re-calculate it. But I decided that it doesn't really make sense to
allow zero fragments.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Rander Wang [Tue, 18 Dec 2018 08:24:54 +0000 (16:24 +0800)]
ASoC: Intel: Haswell/Broadwell: fix setting for .dynamic field
[ Upstream commit
906a9abc5de73c383af518f5a806f4be2993a0c7 ]
For some reason this field was set to zero when all other drivers use
.dynamic = 1 for front-ends. This change was tested on Dell XPS13 and
has no impact with the existing legacy driver. The SOF driver also works
with this change which enables it to override the fixed topology.
Signed-off-by: Rander Wang <rander.wang@linux.intel.com>
Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Kristian H. Kristensen [Wed, 19 Dec 2018 16:57:41 +0000 (08:57 -0800)]
drm/msm: Unblock writer if reader closes file
[ Upstream commit
99c66bc051e7407fe0bf0607b142ec0be1a1d1dd ]
Prevents deadlock when fifo is full and reader closes file.
Signed-off-by: Kristian H. Kristensen <hoegsberg@chromium.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
John Garry [Thu, 14 Feb 2019 16:37:57 +0000 (00:37 +0800)]
scsi: libsas: Fix rphy phy_identifier for PHYs with end devices attached
commit
ffeafdd2bf0b280d67ec1a47ea6287910d271f3f upstream.
The sysfs phy_identifier attribute for a sas_end_device comes from the rphy
phy_identifier value.
Currently this is not being set for rphys with an end device attached, so
we see incorrect symlinks from systemd disk/by-path:
root@localhost:~# ls -l /dev/disk/by-path/
total 0
lrwxrwxrwx 1 root root 9 Feb 13 12:26 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy0-lun-0 -> ../../sdb
lrwxrwxrwx 1 root root 10 Feb 13 12:26 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy0-lun-0-part1 -> ../../sdb1
lrwxrwxrwx 1 root root 10 Feb 13 12:26 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy0-lun-0-part2 -> ../../sdb2
lrwxrwxrwx 1 root root 10 Feb 13 12:26 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy0-lun-0-part3 -> ../../sdc3
Indeed, each sas_end_device phy_identifier value is 0:
root@localhost:/# more sys/class/sas_device/end_device-0\:0\:2/phy_identifier
0
root@localhost:/# more sys/class/sas_device/end_device-0\:0\:10/phy_identifier
0
This patch fixes the discovery code to set the phy_identifier. With this,
we now get proper symlinks:
root@localhost:~# ls -l /dev/disk/by-path/
total 0
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy10-lun-0 -> ../../sdg
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy11-lun-0 -> ../../sdh
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy2-lun-0 -> ../../sda
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy2-lun-0-part1 -> ../../sda1
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy3-lun-0 -> ../../sdb
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy3-lun-0-part1 -> ../../sdb1
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy3-lun-0-part2 -> ../../sdb2
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy4-lun-0 -> ../../sdc
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy4-lun-0-part1 -> ../../sdc1
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy4-lun-0-part2 -> ../../sdc2
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy4-lun-0-part3 -> ../../sdc3
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy5-lun-0 -> ../../sdd
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy7-lun-0 -> ../../sde
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy7-lun-0-part1 -> ../../sde1
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy7-lun-0-part2 -> ../../sde2
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy7-lun-0-part3 -> ../../sde3
lrwxrwxrwx 1 root root 9 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy8-lun-0 -> ../../sdf
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy8-lun-0-part1 -> ../../sdf1
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy8-lun-0-part2 -> ../../sdf2
lrwxrwxrwx 1 root root 10 Feb 13 11:53 platform-HISI0162:01-sas-exp0x500e004aaaaaaa1f-phy8-lun-0-part3 -> ../../sdf3
Fixes: 2908d778ab3e ("[SCSI] aic94xx: new driver")
Reported-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Reviewed-by: Jason Yan <yanaijie@huawei.com>
Tested-by: dann frazier <dann.frazier@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 27 Feb 2019 14:02:03 +0000 (15:02 +0100)]
Revert "loop: Fold __loop_release into loop_release"
This reverts commit
7d839c10b848aa66ca1290a21ee600bd17c2dcb4 which is
commit
967d1dc144b50ad005e5eecdfadfbcfb399ffff6 upstream.
It does not work properly in the 4.9.y tree and causes more problems
than it fixes, so revert it.
Reported-by: Thomas Lindroth <thomas.lindroth@gmail.com>
Reported-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 27 Feb 2019 14:00:55 +0000 (15:00 +0100)]
Revert "loop: Get rid of loop_index_mutex"
This reverts commit
6a8f1d8d701462937ce01a3f2219af5435372af7 which is
commit
0a42e99b58a208839626465af194cfe640ef9493 upstream.
It does not work properly in the 4.9.y tree and causes more problems
than it fixes, so revert it.
Reported-by: Thomas Lindroth <thomas.lindroth@gmail.com>
Reported-by: Jan Kara <jack@suse.cz>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 27 Feb 2019 13:58:58 +0000 (14:58 +0100)]
Revert "loop: Fix double mutex_unlock(&loop_ctl_mutex) in loop_control_ioctl()"
This reverts commit
5d3cf50105d007adc54949e0caeca1e944549723 which is
commit
628bd85947091830a8c4872adfd5ed1d515a9cf2 upstream.
It does not work properly in the 4.9.y tree and causes more problems
than it fixes, so revert it.
Reported-by: Thomas Lindroth <thomas.lindroth@gmail.com>
Reported-by: Jan Kara <jack@suse.cz>
Cc: syzbot <syzbot+c0138741c2290fc5e63f@syzkaller.appspotmail.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Cc: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Greg Kroah-Hartman [Wed, 27 Feb 2019 09:07:03 +0000 (10:07 +0100)]
Linux 4.9.161
Masahiro Yamada [Tue, 6 Nov 2018 03:04:55 +0000 (12:04 +0900)]
kbuild: consolidate Clang compiler flags
commit
238bcbc4e07fad2fff99c5b157d0c37ccd4d093c upstream.
Collect basic Clang options such as --target, --prefix, --gcc-toolchain,
-no-integrated-as into a single variable CLANG_FLAGS so that it can be
easily reused in other parts of Makefile.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Greg Hackmann <ghackmann@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Matthias Kaehlcke [Mon, 30 Oct 2017 18:08:16 +0000 (11:08 -0700)]
sched/sysctl: Fix attributes of some extern declarations
commit
a9903f04e0a4ea522d959c2f287cdf0ab029e324 upstream.
The definition of sysctl_sched_migration_cost, sysctl_sched_nr_migrate
and sysctl_sched_time_avg includes the attribute const_debug. This
attribute is not part of the extern declaration of these variables in
include/linux/sched/sysctl.h, while it is in kernel/sched/sched.h,
and as a result Clang generates warnings like this:
kernel/sched/sched.h:1618:33: warning: section attribute is specified on redeclared variable [-Wsection]
extern const_debug unsigned int sysctl_sched_time_avg;
^
./include/linux/sched/sysctl.h:42:21: note: previous declaration is here
extern unsigned int sysctl_sched_time_avg;
The header only declares the variables when CONFIG_SCHED_DEBUG is defined,
therefore it is not necessary to duplicate the definition of const_debug.
Instead we can use the attribute __read_mostly, which is the expansion of
const_debug when CONFIG_SCHED_DEBUG=y is set.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Nick Desaulniers <nick.desaulniers@gmail.com>
Cc: Douglas Anderson <dianders@chromium.org>
Cc: Guenter Roeck <groeck@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shile Zhang <shile.zhang@nokia.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20171030180816.170850-1-mka@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
[nc: Backport to 4.9]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Colin Ian King [Thu, 23 Nov 2017 11:10:47 +0000 (11:10 +0000)]
phy: tegra: remove redundant self assignment of 'map'
commit
a0dd6773038f3fd2bd1b4f7ec193887cffc49046 upstream.
The assignment of map to itself is redundant and can be removed.
Detected with Coccinelle.
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nathan Chancellor [Thu, 1 Nov 2018 00:50:21 +0000 (17:50 -0700)]
pinctrl: max77620: Use define directive for max77620_pinconf_param values
commit
1f60652dd586d1b3eee7c4602892a97a62fa937a upstream.
Clang warns when one enumerated type is implicitly converted to another:
drivers/pinctrl/pinctrl-max77620.c:56:12: warning: implicit conversion
from enumeration type 'enum max77620_pinconf_param' to different
enumeration type 'enum pin_config_param' [-Wenum-conversion]
.param = MAX77620_ACTIVE_FPS_SOURCE,
^~~~~~~~~~~~~~~~~~~~~~~~~~
It is expected that pinctrl drivers can extend pin_config_param because
of the gap between PIN_CONFIG_END and PIN_CONFIG_MAX so this conversion
isn't an issue. Most drivers that take advantage of this define the
PIN_CONFIG variables as constants, rather than enumerated values. Do the
same thing here so that Clang no longer warns.
Link: https://github.com/ClangBuiltLinux/linux/issues/139
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Pablo Neira Ayuso [Fri, 15 Feb 2019 11:50:24 +0000 (12:50 +0100)]
netfilter: nf_tables: fix flush after rule deletion in the same batch
commit
23b7ca4f745f21c2b9cfcb67fdd33733b3ae7e66 upstream.
Flush after rule deletion bogusly hits -ENOENT. Skip rules that have
been already from nft_delrule_by_chain() which is always called from the
flush path.
Fixes: cf9dc09d0949 ("netfilter: nf_tables: fix missing rules flushing per table")
Reported-by: Phil Sutter <phil@nwl.cc>
Acked-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Hangbin Liu [Fri, 22 Feb 2019 13:22:32 +0000 (21:22 +0800)]
Revert "bridge: do not add port to router list when receives query with source 0.0.0.0"
commit
278e2148c07559dd4ad8602f22366d61eb2ee7b7 upstream.
This reverts commit
5a2de63fd1a5 ("bridge: do not add port to router list
when receives query with source 0.0.0.0") and commit
0fe5119e267f ("net:
bridge: remove ipv6 zero address check in mcast queries")
The reason is RFC 4541 is not a standard but suggestive. Currently we
will elect 0.0.0.0 as Querier if there is no ip address configured on
bridge. If we do not add the port which recives query with source
0.0.0.0 to router list, the IGMP reports will not be about to forward
to Querier, IGMP data will also not be able to forward to dest.
As Nikolay suggested, revert this change first and add a boolopt api
to disable none-zero election in future if needed.
Reported-by: Linus Lüssing <linus.luessing@c0d3.blue>
Reported-by: Sebastian Gottschall <s.gottschall@newmedia-net.de>
Fixes: 5a2de63fd1a5 ("bridge: do not add port to router list when receives query with source 0.0.0.0")
Fixes: 0fe5119e267f ("net: bridge: remove ipv6 zero address check in mcast queries")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nick Desaulniers [Mon, 10 Jul 2017 22:47:26 +0000 (15:47 -0700)]
mm/zsmalloc.c: fix -Wunneeded-internal-declaration warning
commit
3457f4147675108aa83f9f33c136f06bb9f8518f upstream.
is_first_page() is only called from the macro VM_BUG_ON_PAGE() which is
only compiled in as a runtime check when CONFIG_DEBUG_VM is set,
otherwise is checked at compile time and not actually compiled in.
Fixes the following warning, found with Clang:
mm/zsmalloc.c:472:12: warning: function 'is_first_page' is not needed and will not be emitted [-Wunneeded-internal-declaration]
static int is_first_page(struct page *page)
^
Link: http://lkml.kernel.org/r/20170524053859.29059-1-nick.desaulniers@gmail.com
Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Matthias Kaehlcke [Fri, 8 Sep 2017 23:13:02 +0000 (16:13 -0700)]
mm/zsmalloc.c: change stat type parameter to int
commit
3eb95feac113d8ebad5b7b5189a65efcbd95a749 upstream.
zs_stat_inc/dec/get() uses enum zs_stat_type for the stat type, however
some callers pass an enum fullness_group value. Change the type to int to
reflect the actual use of the functions and get rid of 'enum-conversion'
warnings
Link: http://lkml.kernel.org/r/20170731175000.56538-1-mka@chromium.org
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Cc: Doug Anderson <dianders@chromium.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Will Deacon [Fri, 28 Oct 2016 11:23:57 +0000 (12:23 +0100)]
irqchip/gic-v3: Convert arm64 GIC accessors to {read,write}_sysreg_s
commit
d44ffa5ae70a15a15190aa9ffa6f6acdeae1d25c upstream.
The GIC system registers are accessed using open-coded wrappers around
the mrs_s/msr_s asm macros.
This patch moves the code over to the {read,wrote}_sysreg_s accessors
instead, reducing the amount of explicit asm blocks in the arch headers.
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
[nc: Also fix gic_write_bpr1, which was incidentally fixed in
0e9884fe63c6 ("arm64: sysreg: subsume GICv3 sysreg definitions")]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Masahiro Yamada [Tue, 6 Nov 2018 03:04:54 +0000 (12:04 +0900)]
kbuild: add -no-integrated-as Clang option unconditionally
commit
dbe27a002ef8573168cb64e181458ea23a74e2b6 upstream.
We are still a way off the Clang's integrated assembler support for
the kernel. Hence, -no-integrated-as is mandatory to build the kernel
with Clang. If you had an ancient version of Clang that does not
recognize this option, you would not be able to compile the kernel
anyway.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Stefan Agner [Mon, 19 Mar 2018 21:12:53 +0000 (22:12 +0100)]
kbuild: set no-integrated-as before incl. arch Makefile
commit
0f0e8de334c54c38818a4a5390a39aa09deff5bf upstream.
In order to make sure compiler flag detection for ARM works
correctly the no-integrated-as flags need to be set before
including the arch specific Makefile.
Fixes: cfe17c9bbe6a ("kbuild: move cc-option and cc-disable-warning after incl. arch Makefile")
Signed-off-by: Stefan Agner <stefan@agner.ch>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[nc: Backport to 4.9; adjust context due to a previous backport]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sodagudi Prasad [Tue, 6 Feb 2018 23:46:51 +0000 (15:46 -0800)]
kbuild: clang: disable unused variable warnings only when constant
commit
0a5f41767444cc3b4fc5573921ab914b4f78baaa upstream.
Currently, GCC disables -Wunused-const-variable, but not
-Wunused-variable, so warns unused variables if they are
non-constant.
While, Clang does not warn unused variables at all regardless of
the const qualifier because -Wno-unused-const-variable is implied
by the stronger option -Wno-unused-variable.
Disable -Wunused-const-variable instead of -Wunused-variable so that
GCC and Clang work in the same way.
Signed-off-by: Prasad Sodagudi <psodagud@codeaurora.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Nick Desaulniers [Sat, 7 Oct 2017 20:23:23 +0000 (13:23 -0700)]
kbuild: clang: remove crufty HOSTCFLAGS
commit
df16aaac26e92e97ab7234d3f93c953466adc4b5 upstream.
When compiling with `make CC=clang HOSTCC=clang`, I was seeing warnings
that clang did not recognize -fno-delete-null-pointer-checks for HOSTCC
targets. These were added in commit
61163efae020 ("kbuild: LLVMLinux:
Add Kbuild support for building kernel with Clang").
Clang does not support -fno-delete-null-pointer-checks, so adding it to
HOSTCFLAGS if HOSTCC is clang does not make sense.
It's not clear why the other warnings were disabled, and just for
HOSTCFLAGS, but I can remove them, add -Werror to HOSTCFLAGS and compile
with clang just fine.
Suggested-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Nick Desaulniers <nick.desaulniers@gmail.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[nc: Backport to 4.9; adjust context]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
David Lin [Fri, 20 Oct 2017 21:09:13 +0000 (14:09 -0700)]
kbuild: clang: fix build failures with sparse check
commit
bb3f38c3c5b759163e09b9152629cc789731de47 upstream.
We should avoid using the space character when passing arguments to
clang, because static code analysis check tool such as sparse may
misinterpret the arguments followed by spaces as build targets hence
cause the build to fail.
Signed-off-by: David Lin <dtwlin@google.com>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
[nc: Backport to 4.9; adjust context]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Masahiro Yamada [Mon, 27 Nov 2017 12:15:13 +0000 (21:15 +0900)]
kbuild: move cc-option and cc-disable-warning after incl. arch Makefile
commit
cfe17c9bbe6a673fdafdab179c32b355ed447f66 upstream.
Geert reported commit
ae6b289a3789 ("kbuild: Set KBUILD_CFLAGS before
incl. arch Makefile") broke cross-compilation using a cross-compiler
that supports less compiler options than the host compiler.
For example,
cc1: error: unrecognized command line option "-Wno-unused-but-set-variable"
This problem happens on architectures that setup CROSS_COMPILE in their
arch/*/Makefile.
Move the cc-option and cc-disable-warning back to the original position,
but keep the Clang target options untouched.
Fixes: ae6b289a3789 ("kbuild: Set KBUILD_CFLAGS before incl. arch Makefile")
Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
[nc: Backport to 4.9; adjust context due to a previous backport]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Ville Syrjälä [Fri, 1 Sep 2017 14:31:23 +0000 (17:31 +0300)]
drm/i915: Fix enum pipe vs. enum transcoder for the PCH transcoder
commit
41c32e5da3ff3922490341a988b2a3ae46d0b6a8 upstream.
Use enum pipe for PCH transcoders also in the FIFO underrun code.
Fixes the following new sparse warnings:
intel_fifo_underrun.c:340:49: warning: mixing different enum types
intel_fifo_underrun.c:340:49: int enum pipe versus
intel_fifo_underrun.c:340:49: int enum transcoder
intel_fifo_underrun.c:344:49: warning: mixing different enum types
intel_fifo_underrun.c:344:49: int enum pipe versus
intel_fifo_underrun.c:344:49: int enum transcoder
intel_fifo_underrun.c:397:57: warning: mixing different enum types
intel_fifo_underrun.c:397:57: int enum pipe versus
intel_fifo_underrun.c:397:57: int enum transcoder
intel_fifo_underrun.c:398:17: warning: mixing different enum types
intel_fifo_underrun.c:398:17: int enum pipe versus
intel_fifo_underrun.c:398:17: int enum transcoder
Cc: Matthias Kaehlcke <mka@chromium.org>
Fixes: a21960339c8c ("drm/i915: Consistently use enum pipe for PCH transcoders")
Signed-off-by: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20170901143123.7590-3-ville.syrjala@linux.intel.com
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
[nc: Backport to 4.9, drop unneeded hunks]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Matthias Kaehlcke [Mon, 17 Jul 2017 18:14:03 +0000 (11:14 -0700)]
drm/i915: Consistently use enum pipe for PCH transcoders
commit
a21960339c8c107eae99d68c85e6355189b22192 upstream.
The current code uses in some instances enum transcoder for PCH
transcoders and enum pipe in others. This is error prone and clang
raises warnings like this:
drivers/gpu/drm/i915/intel_dp.c:3546:51: warning: implicit conversion
from enumeration type 'enum pipe' to different enumeration type
'enum transcoder' [-Wenum-conversion]
intel_set_pch_fifo_underrun_reporting(dev_priv, PIPE_A, false);
Consistently use the type enum pipe for PCH transcoders.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20170717181403.57324-1-mka@chromium.org
[nc: Backport to 4.9; adjust context and drop unneeded hunks]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Matthias Kaehlcke [Tue, 25 Jul 2017 21:50:53 +0000 (14:50 -0700)]
x86/boot: Disable the address-of-packed-member compiler warning
commit
20c6c189045539d29f4854d92b7ea9c329e1edfc upstream.
The clang warning 'address-of-packed-member' is disabled for the general
kernel code, also disable it for the x86 boot code.
This suppresses a bunch of warnings like this when building with clang:
./arch/x86/include/asm/processor.h:535:30: warning: taking address of
packed member 'sp0' of class or structure 'x86_hw_tss' may result in an
unaligned pointer value [-Waddress-of-packed-member]
return this_cpu_read_stable(cpu_tss.x86_tss.sp0);
^~~~~~~~~~~~~~~~~~~
./arch/x86/include/asm/percpu.h:391:59: note: expanded from macro
'this_cpu_read_stable'
#define this_cpu_read_stable(var) percpu_stable_op("mov", var)
^~~
./arch/x86/include/asm/percpu.h:228:16: note: expanded from macro
'percpu_stable_op'
: "p" (&(var)));
^~~
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Cc: Doug Anderson <dianders@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170725215053.135586-1-mka@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Matthias Kaehlcke [Fri, 21 Apr 2017 23:41:10 +0000 (16:41 -0700)]
tracing: Use cpumask_available() to check if cpumask variable may be used
commit
4dbbe2d8e95c351157f292ece067f985c30c7b53 upstream.
This fixes the following clang warning:
kernel/trace/trace.c:3231:12: warning: address of array 'iter->started'
will always evaluate to 'true' [-Wpointer-bool-conversion]
if (iter->started)
Link: http://lkml.kernel.org/r/20170421234110.117075-1-mka@chromium.org
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Matthias Kaehlcke [Tue, 25 Jul 2017 18:36:25 +0000 (11:36 -0700)]
netpoll: Fix device name check in netpoll_setup()
commit
0c3a8f8b8fabff4f3ad2dd7b95ae0e90cdd1aebb upstream.
Apparently netpoll_setup() assumes that netpoll.dev_name is a pointer
when checking if the device name is set:
if (np->dev_name) {
...
However the field is a character array, therefore the condition always
yields true. Check instead whether the first byte of the array has a
non-zero value.
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Matthias Kaehlcke [Tue, 18 Apr 2017 23:30:37 +0000 (16:30 -0700)]
clocksource: Use GENMASK_ULL in definition of CLOCKSOURCE_MASK
commit
0773cea37470f8e080c510fe720fc356cf35df3a upstream
Besides reusing existing code this removes the special case handling
for 64-bit masks, which causes clang to raise a shift count overflow
warning due to https://bugs.llvm.org//show_bug.cgi?id=10030.
Suggested-by: Dmitry Torokhov <dtor@chromium.org>
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Cc: Grant Grundler <grundler@chromium.org>
Cc: Greg Hackmann <ghackmann@google.com>
Cc: Michael Davidson <md@google.com>
Cc: John Stultz <john.stultz@linaro.org>
Link: http://lkml.kernel.org/r/20170418233037.70990-1-mka@chromium.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[nc: cycle_t wasn't eliminated until commit
a5a1d1c2914b ("clocksource:
Use a plain u64 instead of cycle_t") in v4.10]
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Matthias Kaehlcke [Mon, 13 Mar 2017 18:57:25 +0000 (11:57 -0700)]
hpet: Make cmd parameter of hpet_ioctl_common() unsigned
commit
5cd5e6ad0ede862432e1e766bfe02a9ad447533e upstream.
The value passed by the two callers of the function is unsigned anyway.
Making the parameter unsigned fixes the following warning when building
with clang:
drivers/char/hpet.c:588:7: error: overflow converting case value to switch condition type (
2149083139 to
18446744071563667459) [-Werror,-Wswitch]
case HPET_INFO:
^
include/uapi/linux/hpet.h:18:19: note: expanded from macro 'HPET_INFO'
^
include/uapi/asm-generic/ioctl.h:77:28: note: expanded from macro '_IOR'
^
include/uapi/asm-generic/ioctl.h:66:2: note: expanded from macro '_IOC'
(((dir) << _IOC_DIRSHIFT) | \
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Acked-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Alexey Brodkin [Fri, 8 Feb 2019 10:55:19 +0000 (13:55 +0300)]
ARC: define ARCH_SLAB_MINALIGN = 8
commit
b6835ea77729e7faf4656ca637ba53f42b8ee3fd upstream.
The default value of ARCH_SLAB_MINALIGN in "include/linux/slab.h" is
"__alignof__(unsigned long long)" which for ARC unexpectedly turns out
to be 4. This is not a compiler bug, but as defined by ARC ABI [1]
Thus slab allocator would allocate a struct which is 32-bit aligned,
which is generally OK even if struct has long long members.
There was however potetial problem when it had any atomic64_t which
use LLOCKD/SCONDD instructions which are required by ISA to take
64-bit addresses. This is the problem we ran into
[ 4.015732] EXT4-fs (mmcblk0p2): re-mounted. Opts: (null)
[ 4.167881] Misaligned Access
[ 4.172356] Path: /bin/busybox.nosuid
[ 4.176004] CPU: 2 PID: 171 Comm: rm Not tainted 4.19.14-yocto-standard #1
[ 4.182851]
[ 4.182851] [ECR ]: 0x000d0000 => Check Programmer's Manual
[ 4.190061] [EFA ]: 0xbeaec3fc
[ 4.190061] [BLINK ]: ext4_delete_entry+0x210/0x234
[ 4.190061] [ERET ]: ext4_delete_entry+0x13e/0x234
[ 4.202985] [STAT32]: 0x80080002 : IE K
[ 4.207236] BTA: 0x9009329c SP: 0xbe5b1ec4 FP: 0x00000000
[ 4.212790] LPS: 0x9074b118 LPE: 0x9074b120 LPC: 0x00000000
[ 4.218348] r00: 0x00000040 r01: 0x00000021 r02: 0x00000001
...
...
[ 4.270510] Stack Trace:
[ 4.274510] ext4_delete_entry+0x13e/0x234
[ 4.278695] ext4_rmdir+0xe0/0x238
[ 4.282187] vfs_rmdir+0x50/0xf0
[ 4.285492] do_rmdir+0x9e/0x154
[ 4.288802] EV_Trap+0x110/0x114
The fix is to make sure slab allocations are 64-bit aligned.
Do note that atomic64_t is __attribute__((aligned(8)) which means gcc
does generate 64-bit aligned references, relative to beginning of
container struct. However the issue is if the container itself is not
64-bit aligned, atomic64_t ends up unaligned which is what this patch
ensures.
[1] https://github.com/foss-for-synopsys-dwc-arc-processors/toolchain/wiki/files/ARCv2_ABI.pdf
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: <stable@vger.kernel.org> # 4.8+
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
[vgupta: reworked changelog, added dependency on LL64+LLSC]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eugeniy Paltsev [Thu, 14 Feb 2019 15:07:44 +0000 (18:07 +0300)]
ARC: U-boot: check arguments paranoidly
commit
a66f2e57bd566240d8b3884eedf503928fbbe557 upstream.
Handle U-boot arguments paranoidly:
* don't allow to pass unknown tag.
* try to use external device tree blob only if corresponding tag
(TAG_DTB) is set.
* don't check uboot_tag if kernel build with no ARC_UBOOT_SUPPORT.
NOTE:
If U-boot args are invalid we skip them and try to use embedded device
tree blob. We can't panic on invalid U-boot args as we really pass
invalid args due to bug in U-boot code.
This happens if we don't provide external DTB to U-boot and
don't set 'bootargs' U-boot environment variable (which is default
case at least for HSDK board) In that case we will pass
{r0 = 1 (bootargs in r2); r1 = 0; r2 = 0;} to linux which is invalid.
While I'm at it refactor U-boot arguments handling code.
Cc: stable@vger.kernel.org
Tested-by: Corentin LABBE <clabbe@baylibre.com>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Eugeniy Paltsev [Wed, 16 Jan 2019 11:29:50 +0000 (14:29 +0300)]
ARCv2: Enable unaligned access in early ASM code
commit
252f6e8eae909bc075a1b1e3b9efb095ae4c0b56 upstream.
It is currently done in arc_init_IRQ() which might be too late
considering gcc 7.3.1 onwards (GNU 2018.03) generates unaligned
memory accesses by default
Cc: stable@vger.kernel.org #4.4+
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
[vgupta: rewrote changelog]
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
projects / platform / kernel / linux-amlogic.git / log