Ilya Dryomov [Thu, 17 May 2018 14:13:07 +0000 (16:13 +0200)]
libceph: don't warn if req->r_abort_on_full is set
The "FULL or reached pool quota" warning is there to explain paused
requests. No need to emit it if pausing isn't going to occur.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Ilya Dryomov [Wed, 16 May 2018 16:21:34 +0000 (18:21 +0200)]
libceph: use for_each_request() in ceph_osdc_abort_on_full()
Scanning the trees just to see if there is anything to abort is
unnecessary -- all that is needed here is to update the epoch barrier
first, before we start aborting. Simplify and do the update inside the
loop before calling abort_request() for the first time.
The switch to for_each_request() also fixes a bug: homeless requests
weren't even considered for aborting.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Ilya Dryomov [Mon, 21 May 2018 14:00:29 +0000 (16:00 +0200)]
libceph: defer __complete_request() to a workqueue
In the common case, req->r_callback is called by handle_reply() on the
ceph-msgr worker thread without any locks. If handle_reply() fails, it
is called with both osd->lock and osdc->lock. In the map check case,
it is called with just osdc->lock but held for write. Finally, if the
request is aborted because of -ENOSPC or by ceph_osdc_abort_requests(),
it is called directly on the submitter's thread, again with both locks.
req->r_callback on the submitter's thread is relatively new (introduced
in 4.12) and ripe for deadlocks -- e.g. writeback worker thread waiting
on itself:
inode_wait_for_writeback+0x26/0x40
evict+0xb5/0x1a0
iput+0x1d2/0x220
ceph_put_wrbuffer_cap_refs+0xe0/0x2c0 [ceph]
writepages_finish+0x2d3/0x410 [ceph]
__complete_request+0x26/0x60 [libceph]
complete_request+0x2e/0x70 [libceph]
__submit_request+0x256/0x330 [libceph]
submit_request+0x2b/0x30 [libceph]
ceph_osdc_start_request+0x25/0x40 [libceph]
ceph_writepages_start+0xdfe/0x1320 [ceph]
do_writepages+0x1f/0x70
__writeback_single_inode+0x45/0x330
writeback_sb_inodes+0x26a/0x600
__writeback_inodes_wb+0x92/0xc0
wb_writeback+0x274/0x330
wb_workfn+0x2d5/0x3b0
Defer __complete_request() to a workqueue in all failure cases so it's
never on the same thread as ceph_osdc_start_request() and always called
with no locks held.
Link: http://tracker.ceph.com/issues/23978
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Ilya Dryomov [Mon, 21 May 2018 13:33:48 +0000 (15:33 +0200)]
libceph: move more code into __complete_request()
Move req->r_completion wake up and req->r_kref decrement into
__complete_request().
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Ilya Dryomov [Fri, 18 May 2018 17:34:45 +0000 (19:34 +0200)]
libceph: no need to call flush_workqueue() before destruction
destroy_workqueue() drains the workqueue before proceeding with
destruction.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Yan, Zheng [Fri, 18 May 2018 08:05:51 +0000 (16:05 +0800)]
ceph: flush pending works before shutdown super
Pending works hold inode references, which cause "Busy inodes after
unmount" warning.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Yan, Zheng [Fri, 11 May 2018 09:12:02 +0000 (17:12 +0800)]
ceph: abort osd requests on force umount
This avoid force umount waiting on page writeback:
io_schedule+0xd/0x30
wait_on_page_bit_common+0xc6/0x130
__filemap_fdatawait_range+0xbd/0x100
filemap_fdatawait_keep_errors+0x15/0x40
sync_inodes_sb+0x1cf/0x240
sync_filesystem+0x52/0x90
generic_shutdown_super+0x1d/0x110
ceph_kill_sb+0x28/0x80 [ceph]
deactivate_locked_super+0x35/0x60
cleanup_mnt+0x36/0x70
task_work_run+0x79/0xa0
exit_to_usermode_loop+0x62/0x70
do_syscall_64+0xdb/0xf0
entry_SYSCALL_64_after_hwframe+0x44/0xa9
0xffffffffffffffff
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Ilya Dryomov [Tue, 15 May 2018 13:47:58 +0000 (15:47 +0200)]
libceph: introduce ceph_osdc_abort_requests()
This will be used by the filesystem for "umount -f".
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Luis Henriques [Mon, 21 May 2018 09:27:29 +0000 (10:27 +0100)]
ceph: fix st_nlink stat for directories
Currently, calling stat on a cephfs directory returns 1 for st_nlink.
This behaviour has recently changed in the fuse client, as some
applications seem to expect this value to be either 0 (if it's
unlinked) or 2 + number of subdirectories. This behaviour was changed
in the fuse client with commit
67c7e4619188 ("client: use common
interp of st_nlink for dirs").
This patch modifies the kernel client to have a similar behaviour.
Link: https://tracker.ceph.com/issues/23873
Signed-off-by: Luis Henriques <lhenriques@suse.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Yan, Zheng [Tue, 15 May 2018 03:30:43 +0000 (11:30 +0800)]
ceph: support file lock on directory
Link: http://tracker.ceph.com/issues/24028
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Ilya Dryomov [Thu, 3 May 2018 14:26:55 +0000 (16:26 +0200)]
ceph: show wsize only if non-default
This is how it was before commit
95cca2b44e54 ("ceph: limit osd write
size") went in.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Yan, Zheng [Fri, 27 Apr 2018 03:11:31 +0000 (11:11 +0800)]
ceph: handle the new nfiles/nsubdirs fields in cap message
Without these new fields, stale st_size is returned in following
case.
1. MDS modifies a directory
2. MDS issues CEPH_CAP_ANY_SHARED to client
3. The client satifies stat(2) by its cached metadata. set st_size
to "i_files + i_subdirs".
Link: http://tracker.ceph.com/issues/23855
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Yan, Zheng [Fri, 27 Apr 2018 02:29:44 +0000 (10:29 +0800)]
ceph: define argument structure for handle_cap_grant
The data structure includes the versioned feilds of cap message.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Yan, Zheng [Fri, 27 Apr 2018 03:14:39 +0000 (11:14 +0800)]
ceph: update i_files/i_subdirs only when Fs cap is issued
In MDS, file/subdir counts of a directory inode are protected by
filelock. In request reply without Fs cap, nfiles/nsubdirs can be
stale.
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Yan, Zheng [Wed, 25 Apr 2018 09:30:23 +0000 (17:30 +0800)]
ceph: always get rstat from auth mds
rstat is not tracked by capability. client can't know if rstat from
non-auth mds is uptodate or not.
Link: http://tracker.ceph.com/issues/23538
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Yan, Zheng [Wed, 25 Apr 2018 09:14:05 +0000 (17:14 +0800)]
ceph: use bit flags to define vxattr attributes
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Ilya Dryomov [Fri, 27 Apr 2018 16:58:47 +0000 (18:58 +0200)]
libceph: use MSG_TRUNC for discarding received bytes
Avoid a copy into the "skip buffer".
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Ilya Dryomov [Wed, 25 Apr 2018 10:17:13 +0000 (12:17 +0200)]
libceph: get rid of more_kvec in try_write()
All gotos to "more" are conditioned on con->state == OPEN, but the only
thing "more" does is opening the socket if con->state == PREOPEN. Kill
that label and rename "more_kvec" to "more".
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
Chengguang Xu [Thu, 12 Apr 2018 04:04:55 +0000 (12:04 +0800)]
libceph, rbd: add error handling for osd_req_op_cls_init()
Add proper error handling for osd_req_op_cls_init() to replace
BUG_ON statement when failing from memory allocation.
Signed-off-by: Chengguang Xu <cgxu519@gmx.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Linus Torvalds [Sun, 3 Jun 2018 21:15:21 +0000 (14:15 -0700)]
Linux 4.17
Linus Torvalds [Sun, 3 Jun 2018 18:01:28 +0000 (11:01 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro.
- fix io_destroy()/aio_complete() race
- the vfs_open() change to get rid of open_check_o_direct() boilerplate
was nice, but buggy. Al has a patch avoiding a revert, but that's
definitely not a last-day fodder, so for now revert it is...
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
Revert "fs: fold open_check_o_direct into do_dentry_open"
fix io_destroy()/aio_complete() race
Al Viro [Sat, 2 Jun 2018 05:31:02 +0000 (01:31 -0400)]
Revert "fs: fold open_check_o_direct into do_dentry_open"
This reverts commit
cab64df194667dc5d9d786f0a895f647f5501c0d.
Having vfs_open() in some cases drop the reference to
struct file combined with
error = vfs_open(path, f, cred);
if (error) {
put_filp(f);
return ERR_PTR(error);
}
return f;
is flat-out wrong. It used to be
error = vfs_open(path, f, cred);
if (!error) {
/* from now on we need fput() to dispose of f */
error = open_check_o_direct(f);
if (error) {
fput(f);
f = ERR_PTR(error);
}
} else {
put_filp(f);
f = ERR_PTR(error);
}
and sure, having that open_check_o_direct() boilerplate gotten rid of is
nice, but not that way...
Worse, another call chain (via finish_open()) is FUBAR now wrt
FILE_OPENED handling - in that case we get error returned, with file
already hit by fput() *AND* FILE_OPENED not set. Guess what happens in
path_openat(), when it hits
if (!(opened & FILE_OPENED)) {
BUG_ON(!error);
put_filp(file);
}
The root cause of all that crap is that the callers of do_dentry_open()
have no way to tell which way did it fail; while that could be fixed up
(by passing something like int *opened to do_dentry_open() and have it
marked if we'd called ->open()), it's probably much too late in the
cycle to do so right now.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sun, 3 Jun 2018 16:01:41 +0000 (09:01 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:
- two patches addressing the problem that the scheduler allows under
certain conditions user space tasks to be scheduled on CPUs which are
not yet fully booted which causes a few subtle and hard to debug
issue
- add a missing runqueue clock update in the deadline scheduler which
triggers a warning under certain circumstances
- fix a silly typo in the scheduler header file
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/headers: Fix typo
sched/deadline: Fix missing clock update
sched/core: Require cpu_active() in select_task_rq(), for user tasks
sched/core: Fix rules for running on online && !active CPUs
Linus Torvalds [Sun, 3 Jun 2018 15:58:59 +0000 (08:58 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull perf tooling fixes from Thomas Gleixner:
- fix 'perf test Session topology' segfault on s390 (Thomas Richter)
- fix NULL return handling in bpf__prepare_load() (YueHaibing)
- fix indexing on Coresight ETM packet queue decoder (Mathieu Poirier)
- fix perf.data format description of NRCPUS header (Arnaldo Carvalho
de Melo)
- update perf.data documentation section on cpu topology
- handle uncore event aliases in small groups properly (Kan Liang)
- add missing perf_sample.addr into python sample dictionary (Leo Yan)
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Fix perf.data format description of NRCPUS header
perf script python: Add addr into perf sample dict
perf data: Update documentation section on cpu topology
perf cs-etm: Fix indexing for decoder packet queue
perf bpf: Fix NULL return handling in bpf__prepare_load()
perf test: "Session topology" dumps core on s390
perf parse-events: Handle uncore event aliases in small groups properly
Linus Torvalds [Sun, 3 Jun 2018 00:35:53 +0000 (17:35 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) Infinite loop in _decode_session6(), from Eric Dumazet.
2) Pass correct argument to nla_strlcpy() in netfilter, also from Eric
Dumazet.
3) Out of bounds memory access in ipv6 srh code, from Mathieu Xhonneux.
4) NULL deref in XDP_REDIRECT handling of tun driver, from Toshiaki
Makita.
5) Incorrect idr release in cls_flower, from Paul Blakey.
6) Probe error handling fix in davinci_emac, from Dan Carpenter.
7) Memory leak in XPS configuration, from Alexander Duyck.
8) Use after free with cloned sockets in kcm, from Kirill Tkhai.
9) MTU handling fixes fo ip_tunnel and ip6_tunnel, from Nicolas
Dichtel.
10) Fix UAPI hole in bpf data structure for 32-bit compat applications,
from Daniel Borkmann.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (33 commits)
bpf: fix uapi hole for 32 bit compat applications
net: usb: cdc_mbim: add flag FLAG_SEND_ZLP
ip6_tunnel: remove magic mtu value 0xFFF8
ip_tunnel: restore binding to ifaces with a large mtu
net: dsa: b53: Add BCM5389 support
kcm: Fix use-after-free caused by clonned sockets
net-sysfs: Fix memory leak in XPS configuration
ixgbe: fix parsing of TC actions for HW offload
net: ethernet: davinci_emac: fix error handling in probe()
net/ncsi: Fix array size in dumpit handler
cls_flower: Fix incorrect idr release when failing to modify rule
net/sonic: Use dma_mapping_error()
xfrm Fix potential error pointer dereference in xfrm_bundle_create.
vhost_net: flush batched heads before trying to busy polling
tun: Fix NULL pointer dereference in XDP redirect
be2net: Fix error detection logic for BE3
net: qmi_wwan: Add Netgear Aircard 779S
mlxsw: spectrum: Forbid creation of VLAN 1 over port/LAG
atm: zatm: fix memcmp casting
iwlwifi: pcie: compare with number of IRQs requested for, not number of CPUs
...
Linus Torvalds [Sat, 2 Jun 2018 22:54:49 +0000 (15:54 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fix from James Bottomley:
"Eve of merge window fix: The original code was so bogus as to be
casting the wrong generic device to an rport and proceeding to take
actions based on the bogus values it found.
Fortunately it seems the location that is dereferenced always exists,
so the code hasn't oopsed yet, but it certainly annoys the memory
checkers"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: scsi_transport_srp: Fix shost to rport translation
Linus Torvalds [Sat, 2 Jun 2018 22:24:45 +0000 (15:24 -0700)]
Merge tag 'drm-fixes-for-v4.17-rc8' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"A few final fixes:
i915:
- fix for potential Spectre vector in the new query uAPI
- fix NULL pointer deref (FDO #106559)
- DMI fix to hide LVDS for Radiant P845 (FDO #105468)
amdgpu:
- suspend/resume DC regression fix
- underscan flicker fix on fiji
- gamma setting fix after dpms
omap:
- fix oops regression
core:
- fix PSR timing
dw-hdmi:
- fix oops regression"
* tag 'drm-fixes-for-v4.17-rc8' of git://people.freedesktop.org/~airlied/linux:
drm/amd/display: Update color props when modeset is required
drm/amd/display: Make atomic-check validate underscan changes
drm/bridge/synopsys: dw-hdmi: fix dw_hdmi_setup_rx_sense
drm/amd/display: Fix BUG_ON during CRTC atomic check update
drm/i915/query: nospec expects no more than an unsigned long
drm/i915/query: Protect tainted function pointer lookup
drm/i915/lvds: Move acpi lid notification registration to registration phase
drm/i915: Disable LVDS on Radiant P845
drm/omap: fix NULL deref crash with SDI displays
drm/psr: Fix missed entry in PSR setup time table.
Dave Airlie [Sat, 2 Jun 2018 20:13:57 +0000 (06:13 +1000)]
Merge branch 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
Two last minute DC fixes for 4.17. A fix for underscan on fiji and
a fix for gamma settings getting after dpms.
* 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux:
drm/amd/display: Update color props when modeset is required
drm/amd/display: Make atomic-check validate underscan changes
Linus Torvalds [Sat, 2 Jun 2018 17:12:23 +0000 (10:12 -0700)]
Merge tag 'mips_fixes_4.17_3' of git://git./linux/kernel/git/mips/linux
Pull MIPS fixes from James Hogan:
"A final few MIPS fixes for 4.17:
- drop Lantiq gphy reboot/remove reset (4.14)
- prctl(PR_SET_FP_MODE): Disallow PRE without FR (4.0)
- ptrace(PTRACE_PEEKUSR): Fix 64-bit FGRs (3.15)"
* tag 'mips_fixes_4.17_3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: ptrace: Fix PTRACE_PEEKUSR requests for 64-bit FGRs
MIPS: prctl: Disallow FRE without FR with PR_SET_FP_MODE requests
MIPS: lantiq: gphy: Drop reboot/remove reset asserts
Linus Torvalds [Sat, 2 Jun 2018 17:08:45 +0000 (10:08 -0700)]
Merge tag 'vfio-v4.17' of git://github.com/awilliam/linux-vfio
Pull VFIO fix from Alex Williamson:
"Revert a pfn page mapping optimization identified as introducing a bad
page state regression (Alex Williamson)"
* tag 'vfio-v4.17' of git://github.com/awilliam/linux-vfio:
Revert "vfio/type1: Improve memory pinning process for raw PFN mapping"
Linus Torvalds [Sat, 2 Jun 2018 17:05:45 +0000 (10:05 -0700)]
Merge tag 'char-misc-4.17-rc8' of git://git./linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are four small bugfixes for some char/misc drivers. Well, really
three fixes and one fix for one of those fixes due to problems found
by 0-day.
This resolves some reported issues with the hwtracing drivers, and a
reported regression for the thunderbolt subsystem. All of these have
been in linux-next for a while now with no reported problems"
* tag 'char-misc-4.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
hwtracing: stm: fix build error on some arches
intel_th: Use correct device when freeing buffers
stm class: Use vmalloc for the master map
thunderbolt: Handle NULL boot ACL entries properly
Linus Torvalds [Sat, 2 Jun 2018 17:02:14 +0000 (10:02 -0700)]
Merge tag 'staging-4.17-rc8' of git://git./linux/kernel/git/gregkh/staging
Pull IIO driver fixes from Greg KH:
"Here are some old IIO driver fixes that were sitting in my tree for a
few weeks. Sorry about not getting them to you sooner. They fix a
number of small IIO driver issues that have been reported.
All of these have been in linux-next for a while with no reported
problems"
* tag 'staging-4.17-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
iio: adc: select buffer for at91-sama5d2_adc
iio: hid-sensor-trigger: Fix sometimes not powering up the sensor after resume
iio: adc: at91-sama5d2_adc: fix channel configuration for differential channels
iio:kfifo_buf: check for uint overflow
iio:buffer: make length types match kfifo types
iio: adc: stm32-dfsdm: fix sample rate for div2 spi clock
iio: adc: stm32-dfsdm: fix successive oversampling settings
iio: ad7793: implement IIO_CHAN_INFO_SAMP_FREQ
Linus Torvalds [Sat, 2 Jun 2018 16:55:44 +0000 (09:55 -0700)]
Merge tag 'for-linus' of git://git./linux/kernel/git/rdma/rdma
Pull rdma fixes from Jason Gunthorpe:
"Just three small last minute regressions that were found in the last
week. The Broadcom fix is a bit big for rc7, but since it is fixing
driver crash regressions that were merged via netdev into rc1, I am
sending it.
- bnxt netdev changes merged this cycle caused the bnxt RDMA driver
to crash under certain situations
- Arnd found (several, unfortunately) kconfig problems with the
patches adding INFINIBAND_ADDR_TRANS. Reverting this last part,
will fix it more fully outside -rc.
- Subtle change in error code for a uapi function caused breakage in
userspace. This was bug was subtly introduced cycle"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
IB/core: Fix error code for invalid GID entry
IB: Revert "remove redundant INFINIBAND kconfig dependencies"
RDMA/bnxt_re: Fix broken RoCE driver due to recent L2 driver changes
Linus Torvalds [Sat, 2 Jun 2018 16:52:22 +0000 (09:52 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"A documentation bugfix and a MAINTAINERS addition"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: ocores: update HDL sources URL
i2c: xlp9xx: Add MAINTAINERS entry
Linus Torvalds [Sat, 2 Jun 2018 16:44:15 +0000 (09:44 -0700)]
Merge branch 'akpm' (patches from Andrew)
Merge two fixes from Andrew Morton.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
mm: fix the NULL mapping case in __isolate_lru_page()
mm/huge_memory.c: __split_huge_page() use atomic ClearPageDirty()
Hugh Dickins [Fri, 1 Jun 2018 23:50:50 +0000 (16:50 -0700)]
mm: fix the NULL mapping case in __isolate_lru_page()
George Boole would have noticed a slight error in 4.16 commit
69d763fc6d3a ("mm: pin address_space before dereferencing it while
isolating an LRU page"). Fix it, to match both the comment above it,
and the original behaviour.
Although anonymous pages are not marked PageDirty at first, we have an
old habit of calling SetPageDirty when a page is removed from swap
cache: so there's a category of ex-swap pages that are easily
migratable, but were inadvertently excluded from compaction's async
migration in 4.16.
Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1805302014001.12558@eggly.anvils
Fixes:
69d763fc6d3a ("mm: pin address_space before dereferencing it while isolating an LRU page")
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: Mel Gorman <mgorman@techsingularity.net>
Reported-by: Ivan Kalvachev <ikalvachev@gmail.com>
Cc: "Huang, Ying" <ying.huang@intel.com>
Cc: Jan Kara <jack@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Hugh Dickins [Fri, 1 Jun 2018 23:50:45 +0000 (16:50 -0700)]
mm/huge_memory.c: __split_huge_page() use atomic ClearPageDirty()
Swapping load on huge=always tmpfs (with khugepaged tuned up to be very
eager, but I'm not sure that is relevant) soon hung uninterruptibly,
waiting for page lock in shmem_getpage_gfp()'s find_lock_entry(), most
often when "cp -a" was trying to write to a smallish file. Debug showed
that the page in question was not locked, and page->mapping NULL by now,
but page->index consistent with having been in a huge page before.
Reproduced in minutes on a 4.15 kernel, even with 4.17's
605ca5ede764
("mm/huge_memory.c: reorder operations in __split_huge_page_tail()") added
in; but took hours to reproduce on a 4.17 kernel (no idea why).
The culprit proved to be the __ClearPageDirty() on tails beyond i_size in
__split_huge_page(): the non-atomic __bitoperation may have been safe when
4.8's
baa355fd3314 ("thp: file pages support for split_huge_page()")
introduced it, but liable to erase PageWaiters after 4.10's
62906027091f
("mm: add PageWaiters indicating tasks are waiting for a page bit").
Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1805291841070.3197@eggly.anvils
Fixes:
62906027091f ("mm: add PageWaiters indicating tasks are waiting for a page bit")
Signed-off-by: Hugh Dickins <hughd@google.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Alex Williamson [Sat, 2 Jun 2018 14:41:44 +0000 (08:41 -0600)]
Revert "vfio/type1: Improve memory pinning process for raw PFN mapping"
Bisection by Amadeusz Sławiński implicates this commit leading to bad
page state issues after VM shutdown, likely due to unbalanced page
references. The original commit was intended only as a performance
improvement, therefore revert for offline rework.
Link: https://lkml.org/lkml/2018/6/2/97
Fixes:
356e88ebe447 ("vfio/type1: Improve memory pinning process for raw PFN mapping")
Cc: Jason Cai (Xiang Feng) <jason.cai@linux.alibaba.com>
Reported-by: Amadeusz Sławiński <amade@asmblr.net>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
David S. Miller [Sat, 2 Jun 2018 12:07:52 +0000 (08:07 -0400)]
Merge git://git./pub/scm/linux/kernel/git/bpf/bpf
Daniel Borkmann says:
====================
pull-request: bpf 2018-06-02
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) BPF uapi fix in struct bpf_prog_info and struct bpf_map_info in
order to fix offsets on 32 bit archs.
This will have a minor merge conflict with net-next which has the
__u32 gpl_compatible:1 bitfield in struct bpf_prog_info at this
location. Resolution is to use the gpl_compatible member.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann [Sat, 2 Jun 2018 03:21:59 +0000 (05:21 +0200)]
bpf: fix uapi hole for 32 bit compat applications
In 64 bit, we have a 4 byte hole between ifindex and netns_dev in the
case of struct bpf_map_info but also struct bpf_prog_info. In net-next
commit
b85fab0e67b ("bpf: Add gpl_compatible flag to struct bpf_prog_info")
added a bitfield into it to expose some flags related to programs. Thus,
add an unnamed __u32 bitfield for both so that alignment keeps the same
in both 32 and 64 bit cases, and can be naturally extended from there
as in
b85fab0e67b.
Before:
# file test.o
test.o: ELF 32-bit LSB relocatable, Intel 80386, version 1 (SYSV), not stripped
# pahole test.o
struct bpf_map_info {
__u32 type; /* 0 4 */
__u32 id; /* 4 4 */
__u32 key_size; /* 8 4 */
__u32 value_size; /* 12 4 */
__u32 max_entries; /* 16 4 */
__u32 map_flags; /* 20 4 */
char name[16]; /* 24 16 */
__u32 ifindex; /* 40 4 */
__u64 netns_dev; /* 44 8 */
__u64 netns_ino; /* 52 8 */
/* size: 64, cachelines: 1, members: 10 */
/* padding: 4 */
};
After (same as on 64 bit):
# file test.o
test.o: ELF 32-bit LSB relocatable, Intel 80386, version 1 (SYSV), not stripped
# pahole test.o
struct bpf_map_info {
__u32 type; /* 0 4 */
__u32 id; /* 4 4 */
__u32 key_size; /* 8 4 */
__u32 value_size; /* 12 4 */
__u32 max_entries; /* 16 4 */
__u32 map_flags; /* 20 4 */
char name[16]; /* 24 16 */
__u32 ifindex; /* 40 4 */
/* XXX 4 bytes hole, try to pack */
__u64 netns_dev; /* 48 8 */
__u64 netns_ino; /* 56 8 */
/* --- cacheline 1 boundary (64 bytes) --- */
/* size: 64, cachelines: 1, members: 10 */
/* sum members: 60, holes: 1, sum holes: 4 */
};
Reported-by: Dmitry V. Levin <ldv@altlinux.org>
Reported-by: Eugene Syromiatnikov <esyr@redhat.com>
Fixes:
52775b33bb507 ("bpf: offload: report device information about offloaded maps")
Fixes:
675fc275a3a2d ("bpf: offload: report device information for offloaded programs")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Daniele Palmas [Thu, 31 May 2018 09:18:29 +0000 (11:18 +0200)]
net: usb: cdc_mbim: add flag FLAG_SEND_ZLP
Testing Telit LM940 with ICMP packets > 14552 bytes revealed that
the modem needs FLAG_SEND_ZLP to properly work, otherwise the cdc
mbim data interface won't be anymore responsive.
Signed-off-by: Daniele Palmas <dnlplm@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 1 Jun 2018 17:56:31 +0000 (13:56 -0400)]
Merge branch 'tunnel-mtus'
Nicolas Dichtel says:
====================
ip[6] tunnels: fix mtu calculations
The first patch restores the possibility to bind an ip4 tunnel to an
interface whith a large mtu.
The second patch was spotted after the first fix. I also target it to net
because it fixes the max mtu value that can be used for ipv6 tunnels.
v2: remove the 0xfff8 in ip_tunnel_newlink()
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Nicolas Dichtel [Thu, 31 May 2018 08:59:33 +0000 (10:59 +0200)]
ip6_tunnel: remove magic mtu value 0xFFF8
I don't know where this value comes from (probably a copy and paste and
paste and paste ...).
Let's use standard values which are a bit greater.
Link: https://git.kernel.org/pub/scm/linux/kernel/git/davem/netdev-vger-cvs.git/commit/?id=e5afd356a411a
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Nicolas Dichtel [Thu, 31 May 2018 08:59:32 +0000 (10:59 +0200)]
ip_tunnel: restore binding to ifaces with a large mtu
After commit
f6cc9c054e77, the following conf is broken (note that the
default loopback mtu is 65536, ie IP_MAX_MTU + 1):
$ ip tunnel add gre1 mode gre local 10.125.0.1 remote 10.125.0.2 dev lo
add tunnel "gre0" failed: Invalid argument
$ ip l a type dummy
$ ip l s dummy1 up
$ ip l s dummy1 mtu 65535
$ ip tunnel add gre1 mode gre local 10.125.0.1 remote 10.125.0.2 dev dummy1
add tunnel "gre0" failed: Invalid argument
dev_set_mtu() doesn't allow to set a mtu which is too large.
First, let's cap the mtu returned by ip_tunnel_bind_dev(). Second, remove
the magic value 0xFFF8 and use IP_MAX_MTU instead.
0xFFF8 seems to be there for ages, I don't know why this value was used.
With a recent kernel, it's also possible to set a mtu > IP_MAX_MTU:
$ ip l s dummy1 mtu 66000
After that patch, it's also possible to bind an ip tunnel on that kind of
interface.
CC: Petr Machata <petrm@mellanox.com>
CC: Ido Schimmel <idosch@mellanox.com>
Link: https://git.kernel.org/pub/scm/linux/kernel/git/davem/netdev-vger-cvs.git/commit/?id=e5afd356a411a
Fixes:
f6cc9c054e77 ("ip_tunnel: Emit events for post-register MTU changes")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Fri, 1 Jun 2018 17:25:41 +0000 (13:25 -0400)]
Merge branch 'master' of git://git./linux/kernel/git/klassert/ipsec
Steffen Klassert says:
====================
pull request (net): ipsec 2018-05-31
1) Avoid possible overflow of the offset variable
in _decode_session6(), this fixes an infinite
lookp there. From Eric Dumazet.
2) We may use an error pointer in the error path of
xfrm_bundle_create(). Fix this by returning this
pointer directly to the caller.
Please pull or let me know if there are problems.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Damien Thébault [Thu, 31 May 2018 07:04:01 +0000 (07:04 +0000)]
net: dsa: b53: Add BCM5389 support
This patch adds support for the BCM5389 switch connected through MDIO.
Signed-off-by: Damien Thébault <damien.thebault@vitec.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Kirill Tkhai [Fri, 1 Jun 2018 11:30:38 +0000 (14:30 +0300)]
kcm: Fix use-after-free caused by clonned sockets
(resend for properly queueing in patchwork)
kcm_clone() creates kernel socket, which does not take net counter.
Thus, the net may die before the socket is completely destructed,
i.e. kcm_exit_net() is executed before kcm_done().
Reported-by: syzbot+5f1a04e374a635efc426@syzkaller.appspotmail.com
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Alexander Duyck [Thu, 31 May 2018 19:59:46 +0000 (15:59 -0400)]
net-sysfs: Fix memory leak in XPS configuration
This patch reorders the error cases in showing the XPS configuration so
that we hold off on memory allocation until after we have verified that we
can support XPS on a given ring.
Fixes:
184c449f91fe ("net: Add support for XPS with QoS via traffic classes")
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ondřej Hlavatý [Thu, 31 May 2018 21:21:04 +0000 (23:21 +0200)]
ixgbe: fix parsing of TC actions for HW offload
The previous code was optimistic, accepting the offload of whole action
chain when there was a single known action (drop/redirect). This results
in offloading a rule which should not be offloaded, because its behavior
cannot be reproduced in the hardware.
For example:
$ tc filter add dev eno1 parent ffff: protocol ip \
u32 ht 800: order 1 match tcp src 42 FFFF \
action mirred egress mirror dev enp1s16 pipe \
drop
The controller is unable to mirror the packet to a VF, but still
offloads the rule by dropping the packet.
Change the approach of the function to a pessimistic one, rejecting the
chain when an unknown action is found. This is better suited for future
extensions.
Note that both recognized actions always return TC_ACT_SHOT, therefore
it is safe to ignore actions behind them.
Signed-off-by: Ondřej Hlavatý <ohlavaty@redhat.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Thu, 31 May 2018 21:23:07 +0000 (16:23 -0500)]
Merge tag 'xfs-4.17-fixes-3' of git://git./fs/xfs/xfs-linux
Pull xfs fix from Darrick Wong:
"Clear out i_mapping error state when we're reinitializing inodes.
This last minute fix prevents writeback error state from persisting
past the end of the in-core inode lifecycle and causing EIO errors to
be reported to userspace when no error has occurred.
This fix for the behavioral regression has been soaking in for-next
for a while, but various fs developers persuaded me to try to get it
upstream for 4.17 because the patch that broke things was introduced
in 4.17-rc4"
* tag 'xfs-4.17-fixes-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
fs: clear writeback errors in inode_init_always
Dan Carpenter [Thu, 31 May 2018 06:44:49 +0000 (09:44 +0300)]
net: ethernet: davinci_emac: fix error handling in probe()
The current error handling code has an issue where it does:
if (priv->txchan)
cpdma_chan_destroy(priv->txchan);
The problem is that ->txchan is either valid or an error pointer (which
would lead to an Oops). I've changed it to use multiple error labels so
that the test can be removed.
Also there were some missing calls to netif_napi_del().
Fixes:
3ef0fdb2342c ("net: davinci_emac: switch to new cpdma layer")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Samuel Mendoza-Jonas [Thu, 31 May 2018 04:10:04 +0000 (14:10 +1000)]
net/ncsi: Fix array size in dumpit handler
With CONFIG_CC_STACKPROTECTOR enabled the kernel panics as below when
parsing a NCSI_CMD_PKG_INFO command:
[ 150.149711] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in:
805cff08
[ 150.149711]
[ 150.159919] CPU: 0 PID: 1301 Comm: ncsi-netlink Not tainted 4.13.16-
468cbec6d2c91239332cb91b1f0a73aafcb6f0c6 #1
[ 150.170004] Hardware name: Generic DT based system
[ 150.174852] [<
80109930>] (unwind_backtrace) from [<
80106bc4>] (show_stack+0x20/0x24)
[ 150.182641] [<
80106bc4>] (show_stack) from [<
805d36e4>] (dump_stack+0x20/0x28)
[ 150.189888] [<
805d36e4>] (dump_stack) from [<
801163ac>] (panic+0xdc/0x278)
[ 150.196780] [<
801163ac>] (panic) from [<
801162cc>] (__stack_chk_fail+0x20/0x24)
[ 150.204111] [<
801162cc>] (__stack_chk_fail) from [<
805cff08>] (ncsi_pkg_info_all_nl+0x244/0x258)
[ 150.212912] [<
805cff08>] (ncsi_pkg_info_all_nl) from [<
804f939c>] (genl_lock_dumpit+0x3c/0x54)
[ 150.221535] [<
804f939c>] (genl_lock_dumpit) from [<
804f873c>] (netlink_dump+0xf8/0x284)
[ 150.229550] [<
804f873c>] (netlink_dump) from [<
804f8d44>] (__netlink_dump_start+0x124/0x17c)
[ 150.237992] [<
804f8d44>] (__netlink_dump_start) from [<
804f9880>] (genl_rcv_msg+0x1c8/0x3d4)
[ 150.246440] [<
804f9880>] (genl_rcv_msg) from [<
804f9174>] (netlink_rcv_skb+0xd8/0x134)
[ 150.254361] [<
804f9174>] (netlink_rcv_skb) from [<
804f96a4>] (genl_rcv+0x30/0x44)
[ 150.261850] [<
804f96a4>] (genl_rcv) from [<
804f7790>] (netlink_unicast+0x198/0x234)
[ 150.269511] [<
804f7790>] (netlink_unicast) from [<
804f7ffc>] (netlink_sendmsg+0x368/0x3b0)
[ 150.277783] [<
804f7ffc>] (netlink_sendmsg) from [<
804abea4>] (sock_sendmsg+0x24/0x34)
[ 150.285625] [<
804abea4>] (sock_sendmsg) from [<
804ac1dc>] (___sys_sendmsg+0x244/0x260)
[ 150.293556] [<
804ac1dc>] (___sys_sendmsg) from [<
804ad98c>] (__sys_sendmsg+0x5c/0x9c)
[ 150.301400] [<
804ad98c>] (__sys_sendmsg) from [<
804ad9e4>] (SyS_sendmsg+0x18/0x1c)
[ 150.308984] [<
804ad9e4>] (SyS_sendmsg) from [<
80102640>] (ret_fast_syscall+0x0/0x3c)
[ 150.316743] ---[ end Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in:
805cff08
This turns out to be because the attrs array in ncsi_pkg_info_all_nl()
is initialised to a length of NCSI_ATTR_MAX which is the maximum
attribute number, not the number of attributes.
Fixes:
955dc68cb9b2 ("net/ncsi: Add generic netlink family")
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Thu, 31 May 2018 19:27:39 +0000 (15:27 -0400)]
Merge tag 'wireless-drivers-for-davem-2018-05-30' of git://git./linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
wireless-drivers fixes for 4.17
Two last minute fixes, hopefully they make it to 4.17 still.
rt2x00
* revert a fix which caused even more problems
iwlwifi
* fix a crash when there are 16 or more logical CPUs
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Paul Blakey [Wed, 30 May 2018 08:29:15 +0000 (11:29 +0300)]
cls_flower: Fix incorrect idr release when failing to modify rule
When we fail to modify a rule, we incorrectly release the idr handle
of the unmodified old rule.
Fix that by checking if we need to release it.
Fixes:
fe2502e49b58 ("net_sched: remove cls_flower idr on failure")
Reported-by: Vlad Buslov <vladbu@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Finn Thain [Wed, 30 May 2018 03:03:51 +0000 (13:03 +1000)]
net/sonic: Use dma_mapping_error()
With CONFIG_DMA_API_DEBUG=y, calling sonic_open() produces the
message, "DMA-API: device driver failed to check map error".
Add the missing dma_mapping_error() call.
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Finn Thain <fthain@telegraphics.com.au>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Leo (Sunpeng) Li [Thu, 31 May 2018 14:23:37 +0000 (10:23 -0400)]
drm/amd/display: Update color props when modeset is required
This fixes issues where color management properties don't persist
over DPMS on/off, or when the CRTC is moved across connectors.
Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
David Francis [Thu, 31 May 2018 17:48:31 +0000 (13:48 -0400)]
drm/amd/display: Make atomic-check validate underscan changes
When the underscan state was changed, atomic-check was triggering a
validation but passing the old underscan values. This change adds a
somewhat hacky check in dm_update_crtcs_state that will update the
stream if old and newunderscan values are different.
This was causing 4k on Fiji to allow underscan when it wasn't permitted.
Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: David Francis <David.Francis@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Linus Torvalds [Thu, 31 May 2018 14:39:57 +0000 (09:39 -0500)]
Merge tag 'platform-drivers-x86-v4.17-4' of git://git.infradead.org/linux-platform-drivers-x86
Pull x86 platform driver fix from Andy Shevchenko:
"Fix NULL pointer dereference in asus-wmi on rfkill cleanup.
The effective change is just one new condition - two lines of code.
But it required moving one static helper function, which is why the
diff looks a bit bigger"
* tag 'platform-drivers-x86-v4.17-4' of git://git.infradead.org/linux-platform-drivers-x86:
platform/x86: asus-wmi: Fix NULL pointer dereference
João Paulo Rechi Vita [Tue, 22 May 2018 21:30:15 +0000 (14:30 -0700)]
platform/x86: asus-wmi: Fix NULL pointer dereference
Do not perform the rfkill cleanup routine when
(asus->driver->wlan_ctrl_by_user && ashs_present()) is true, since
nothing is registered with the rfkill subsystem in that case. Doing so
leads to the following kernel NULL pointer dereference:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<
ffffffff816c7348>] __mutex_lock_slowpath+0x98/0x120
PGD
1a3aa8067
PUD
1a3b3d067
PMD 0
Oops: 0002 [#1] PREEMPT SMP
Modules linked in: bnep ccm binfmt_misc uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core hid_a4tech videodev x86_pkg_temp_thermal intel_powerclamp coretemp ath3k btusb btrtl btintel bluetooth kvm_intel snd_hda_codec_hdmi kvm snd_hda_codec_realtek snd_hda_codec_generic irqbypass crc32c_intel arc4 i915 snd_hda_intel snd_hda_codec ath9k ath9k_common ath9k_hw ath i2c_algo_bit snd_hwdep mac80211 ghash_clmulni_intel snd_hda_core snd_pcm snd_timer cfg80211 ehci_pci xhci_pci drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm xhci_hcd ehci_hcd asus_nb_wmi(-) asus_wmi sparse_keymap r8169 rfkill mxm_wmi serio_raw snd mii mei_me lpc_ich i2c_i801 video soundcore mei i2c_smbus wmi i2c_core mfd_core
CPU: 3 PID: 3275 Comm: modprobe Not tainted 4.9.34-gentoo #34
Hardware name: ASUSTeK COMPUTER INC. K56CM/K56CM, BIOS K56CM.206 08/21/2012
task:
ffff8801a639ba00 task.stack:
ffffc900014cc000
RIP: 0010:[<
ffffffff816c7348>] [<
ffffffff816c7348>] __mutex_lock_slowpath+0x98/0x120
RSP: 0018:
ffffc900014cfce0 EFLAGS:
00010282
RAX:
0000000000000000 RBX:
ffff8801a54315b0 RCX:
00000000c0000100
RDX:
0000000000000001 RSI:
0000000000000000 RDI:
ffff8801a54315b4
RBP:
ffffc900014cfd30 R08:
0000000000000000 R09:
0000000000000002
R10:
0000000000000000 R11:
0000000000000000 R12:
ffff8801a54315b4
R13:
ffff8801a639ba00 R14:
00000000ffffffff R15:
ffff8801a54315b8
FS:
00007faa254fb700(0000) GS:
ffff8801aef80000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
0000000000000000 CR3:
00000001a3b1b000 CR4:
00000000001406e0
Stack:
ffff8801a54315b8 0000000000000000 ffffffff814733ae ffffc900014cfd28
ffffffff8146a28c ffff8801a54315b0 0000000000000000 ffff8801a54315b0
ffff8801a66f3820 0000000000000000 ffffc900014cfd48 ffffffff816c73e7
Call Trace:
[<
ffffffff814733ae>] ? acpi_ut_release_mutex+0x5d/0x61
[<
ffffffff8146a28c>] ? acpi_ns_get_node+0x49/0x52
[<
ffffffff816c73e7>] mutex_lock+0x17/0x30
[<
ffffffffa00a3bb4>] asus_rfkill_hotplug+0x24/0x1a0 [asus_wmi]
[<
ffffffffa00a4421>] asus_wmi_rfkill_exit+0x61/0x150 [asus_wmi]
[<
ffffffffa00a49f1>] asus_wmi_remove+0x61/0xb0 [asus_wmi]
[<
ffffffff814a5128>] platform_drv_remove+0x28/0x40
[<
ffffffff814a2901>] __device_release_driver+0xa1/0x160
[<
ffffffff814a29e3>] device_release_driver+0x23/0x30
[<
ffffffff814a1ffd>] bus_remove_device+0xfd/0x170
[<
ffffffff8149e5a9>] device_del+0x139/0x270
[<
ffffffff814a5028>] platform_device_del+0x28/0x90
[<
ffffffff814a50a2>] platform_device_unregister+0x12/0x30
[<
ffffffffa00a4209>] asus_wmi_unregister_driver+0x19/0x30 [asus_wmi]
[<
ffffffffa00da0ea>] asus_nb_wmi_exit+0x10/0xf26 [asus_nb_wmi]
[<
ffffffff8110c692>] SyS_delete_module+0x192/0x270
[<
ffffffff810022b2>] ? exit_to_usermode_loop+0x92/0xa0
[<
ffffffff816ca560>] entry_SYSCALL_64_fastpath+0x13/0x94
Code: e8 5e 30 00 00 8b 03 83 f8 01 0f 84 93 00 00 00 48 8b 43 10 4c 8d 7b 08 48 89 63 10 41 be ff ff ff ff 4c 89 3c 24 48 89 44 24 08 <48> 89 20 4c 89 6c 24 10 eb 1d 4c 89 e7 49 c7 45 08 02 00 00 00
RIP [<
ffffffff816c7348>] __mutex_lock_slowpath+0x98/0x120
RSP <
ffffc900014cfce0>
CR2:
0000000000000000
---[ end trace
8d484233fa7cb512 ]---
note: modprobe[3275] exited with preempt_count 2
https://bugzilla.kernel.org/show_bug.cgi?id=196467
Reported-by: red.f0xyz@gmail.com
Signed-off-by: João Paulo Rechi Vita <jprvita@endlessm.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Ingo Molnar [Thu, 31 May 2018 10:37:07 +0000 (12:37 +0200)]
Merge tag 'perf-urgent-for-mingo-4.17-
20180531' of git://git./linux/kernel/git/acme/linux into perf/urgent
Pull perf/urgent fixes from Arnaldo Carvalho de Melo:
- Fix 'perf test Session topology' segfault on s390 (Thomas Richter)
- Fix NULL return handling in bpf__prepare_load() (YueHaibing)
- Fix indexing on Coresight ETM packet queue decoder (Mathieu Poirier)
- Fix perf.data format description of NRCPUS header (Arnaldo Carvalho de Melo)
- Update perf.data documentation section on cpu topology
- Handle uncore event aliases in small groups properly (Kan Liang)
- Add missing perf_sample.addr into python sample dictionary (Leo Yan)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Davidlohr Bueso [Wed, 30 May 2018 22:49:40 +0000 (15:49 -0700)]
sched/headers: Fix typo
I cannot spell 'throttling'.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180530224940.17839-1-dave@stgolabs.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Juri Lelli [Wed, 30 May 2018 16:08:09 +0000 (18:08 +0200)]
sched/deadline: Fix missing clock update
A missing clock update is causing the following warning:
rq->clock_update_flags < RQCF_ACT_SKIP
WARNING: CPU: 10 PID: 0 at kernel/sched/sched.h:963 inactive_task_timer+0x5d6/0x720
Call Trace:
<IRQ>
__hrtimer_run_queues+0x10f/0x530
hrtimer_interrupt+0xe5/0x240
smp_apic_timer_interrupt+0x79/0x2b0
apic_timer_interrupt+0xf/0x20
</IRQ>
do_idle+0x203/0x280
cpu_startup_entry+0x6f/0x80
start_secondary+0x1b0/0x200
secondary_startup_64+0xa5/0xb0
hardirqs last enabled at (793919): [<
ffffffffa27c5f6e>] cpuidle_enter_state+0x9e/0x360
hardirqs last disabled at (793920): [<
ffffffffa2a0096e>] interrupt_entry+0xce/0xe0
softirqs last enabled at (793922): [<
ffffffffa20bef78>] irq_enter+0x68/0x70
softirqs last disabled at (793921): [<
ffffffffa20bef5d>] irq_enter+0x4d/0x70
This happens because inactive_task_timer() calls sub_running_bw() (if
TASK_DEAD and non_contending) that might trigger a schedutil update,
which might access the clock. Clock is however currently updated only
later in inactive_task_timer() function.
Fix the problem by updating the clock right after task_rq_lock().
Reported-by: kernel test robot <xiaolong.ye@intel.com>
Signed-off-by: Juri Lelli <juri.lelli@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Claudio Scordino <claudio@evidence.eu.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Luca Abeni <luca.abeni@santannapisa.it>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20180530160809.9074-1-juri.lelli@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Paul Burton [Sat, 26 May 2018 15:46:47 +0000 (08:46 -0700)]
sched/core: Require cpu_active() in select_task_rq(), for user tasks
select_task_rq() is used in a few paths to select the CPU upon which a
thread should be run - for example it is used by try_to_wake_up() & by
fork or exec balancing. As-is it allows use of any online CPU that is
present in the task's cpus_allowed mask.
This presents a problem because there is a period whilst CPUs are
brought online where a CPU is marked online, but is not yet fully
initialized - ie. the period where CPUHP_AP_ONLINE_IDLE <= state <
CPUHP_ONLINE. Usually we don't run any user tasks during this window,
but there are corner cases where this can happen. An example observed
is:
- Some user task A, running on CPU X, forks to create task B.
- sched_fork() calls __set_task_cpu() with cpu=X, setting task B's
task_struct::cpu field to X.
- CPU X is offlined.
- Task A, currently somewhere between the __set_task_cpu() in
copy_process() and the call to wake_up_new_task(), is migrated to
CPU Y by migrate_tasks() when CPU X is offlined.
- CPU X is onlined, but still in the CPUHP_AP_ONLINE_IDLE state. The
scheduler is now active on CPU X, but there are no user tasks on
the runqueue.
- Task A runs on CPU Y & reaches wake_up_new_task(). This calls
select_task_rq() with cpu=X, taken from task B's task_struct,
and select_task_rq() allows CPU X to be returned.
- Task A enqueues task B on CPU X's runqueue, via activate_task() &
enqueue_task().
- CPU X now has a user task on its runqueue before it has reached the
CPUHP_ONLINE state.
In most cases, the user tasks that schedule on the newly onlined CPU
have no idea that anything went wrong, but one case observed to be
problematic is if the task goes on to invoke the sched_setaffinity
syscall. The newly onlined CPU reaches the CPUHP_AP_ONLINE_IDLE state
before the CPU that brought it online calls stop_machine_unpark(). This
means that for a portion of the window of time between
CPUHP_AP_ONLINE_IDLE & CPUHP_ONLINE the newly onlined CPU's struct
cpu_stopper has its enabled field set to false. If a user thread is
executed on the CPU during this window and it invokes sched_setaffinity
with a CPU mask that does not include the CPU it's running on, then when
__set_cpus_allowed_ptr() calls stop_one_cpu() intending to invoke
migration_cpu_stop() and perform the actual migration away from the CPU
it will simply return -ENOENT rather than calling migration_cpu_stop().
We then return from the sched_setaffinity syscall back to the user task
that is now running on a CPU which it just asked not to run on, and
which is not present in its cpus_allowed mask.
This patch resolves the problem by having select_task_rq() enforce that
user tasks run on CPUs that are active - the same requirement that
select_fallback_rq() already enforces. This should ensure that newly
onlined CPUs reach the CPUHP_AP_ACTIVE state before being able to
schedule user tasks, and also implies that bringup_wait_for_ap() will
have called stop_machine_unpark() which resolves the sched_setaffinity
issue above.
I haven't yet investigated them, but it may be of interest to review
whether any of the actions performed by hotplug states between
CPUHP_AP_ONLINE_IDLE & CPUHP_AP_ACTIVE could have similar unintended
effects on user tasks that might schedule before they are reached, which
might widen the scope of the problem from just affecting the behaviour
of sched_setaffinity.
Signed-off-by: Paul Burton <paul.burton@mips.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>
Link: http://lkml.kernel.org/r/20180526154648.11635-2-paul.burton@mips.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Peter Zijlstra [Tue, 25 Jul 2017 16:58:21 +0000 (18:58 +0200)]
sched/core: Fix rules for running on online && !active CPUs
As already enforced by the WARN() in __set_cpus_allowed_ptr(), the rules
for running on an online && !active CPU are stricter than just being a
kthread, you need to be a per-cpu kthread.
If you're not strictly per-CPU, you have better CPUs to run on and
don't need the partially booted one to get your work done.
The exception is to allow smpboot threads to bootstrap the CPU itself
and get kernel 'services' initialized before we allow userspace on it.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes:
955dbdf4ce87 ("sched: Allow migrating kthreads into online but inactive CPUs")
Link: http://lkml.kernel.org/r/20170725165821.cejhb7v2s3kecems@hirez.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Steffen Klassert [Thu, 31 May 2018 07:45:18 +0000 (09:45 +0200)]
xfrm Fix potential error pointer dereference in xfrm_bundle_create.
We may derference an invalid pointer in the error path of
xfrm_bundle_create(). Fix this by returning this error
pointer directly instead of assigning it to xdst0.
Fixes:
45b018beddb6 ("ipsec: Create and use new helpers for dst child access.")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Darrick J. Wong [Thu, 31 May 2018 02:43:53 +0000 (19:43 -0700)]
fs: clear writeback errors in inode_init_always
In inode_init_always(), we clear the inode mapping flags, which clears
any retained error (AS_EIO, AS_ENOSPC) bits. Unfortunately, we do not
also clear wb_err, which means that old mapping errors can leak through
to new inodes.
This is crucial for the XFS inode allocation path because we recycle old
in-core inodes and we do not want error state from an old file to leak
into the new file. This bug was discovered by running generic/036 and
generic/047 in a loop and noticing that the EIOs generated by the
collision of direct and buffered writes in generic/036 would survive the
remount between 036 and 047, and get reported to the fsyncs (on
different files!) in generic/047.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Dave Airlie [Wed, 30 May 2018 22:35:47 +0000 (08:35 +1000)]
Merge tag 'drm-misc-fixes-2018-05-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
dw-hdmi: Fix Oops regression from rc1 (Neil)
Cc: Neil Armstrong <narmstrong@baylibre.com>
* tag 'drm-misc-fixes-2018-05-30' of git://anongit.freedesktop.org/drm/drm-misc:
drm/bridge/synopsys: dw-hdmi: fix dw_hdmi_setup_rx_sense
Linus Torvalds [Wed, 30 May 2018 21:37:59 +0000 (16:37 -0500)]
Merge tag 'for-linus-
20180530' of git://git.kernel.dk/linux-block
Pull block fix from Jens Axboe:
"Just a single fix that should make it into this release, fixing a
regression with T10-DIF on NVMe"
* tag 'for-linus-
20180530' of git://git.kernel.dk/linux-block:
nvme: fix extended data LBA supported setting
Linus Torvalds [Wed, 30 May 2018 21:35:07 +0000 (16:35 -0500)]
Merge tag 'selinux-pr-
20180530' of git://git./linux/kernel/git/pcmoore/selinux
Pull SELinux fix from Paul Moore:
"One more small fix for SELinux: a small string length fix found by
KASAN.
I dislike sending patches this late in the release cycle, but this
patch fixes a legitimate problem, is very small, limited in scope, and
well understood.
There are two threads with more information on the problem, the latest
is linked below:
https://marc.info/?t=
152723737400001&r=1&w=2
Stephen points out in the thread linked above:
'Such a setxattr() call can only be performed by a process with
CAP_MAC_ADMIN that is also allowed mac_admin permission in SELinux
policy. Consequently, this is never possible on Android (no process
is allowed mac_admin permission, always enforcing) and is only
possible in Fedora/RHEL for a few domains (if enforcing)'"
* tag 'selinux-pr-
20180530' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: KASAN: slab-out-of-bounds in xattr_getsecurity
Linus Torvalds [Wed, 30 May 2018 21:33:22 +0000 (16:33 -0500)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6
Pull crypto fix from Herbert Xu:
"This fixes a potential kernel panic in the inside-secure driver"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: inside-secure - do not use memset on MMIO
Arnaldo Carvalho de Melo [Fri, 25 May 2018 19:37:36 +0000 (16:37 -0300)]
perf tools: Fix perf.data format description of NRCPUS header
In the perf.data HEADER_CPUDESC feadure header we store first the number
of available CPUs in the system, then the number of CPUs at the time of
writing the header, not the other way around.
Reported-by: Thomas-Mich Richter <tmricht@linux.ibm.com>
Acked-by: Andi Kleen <ak@linux.intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: He Kuang <hekuang@huawei.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kim Phillips <kim.phillips@arm.com>
Cc: Lakshman Annadorai <lakshmana@google.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Simon Que <sque@chromium.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-j7o92acm2vnxjv70y4o3swoc@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Leo Yan [Mon, 28 May 2018 08:45:01 +0000 (16:45 +0800)]
perf script python: Add addr into perf sample dict
ARM CoreSight auxtrace uses 'sample->addr' to record the target address
for branch instructions, so the data of 'sample->addr' is required for
tracing data analysis.
This commit collects data of 'sample->addr' into perf sample dict,
finally can be used for python script for parsing event.
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: Mike Leach <mike.leach@linaro.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Walker <robert.walker@arm.com>
Cc: Tor Jeremiassen <tor@ti.com>
Cc: coresight@lists.linaro.org
Cc: kim.phillips@arm.co
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-doc@vger.kernel.org
Link: http://lkml.kernel.org/r/1527497103-3593-3-git-send-email-leo.yan@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Thomas Richter [Mon, 28 May 2018 07:44:33 +0000 (09:44 +0200)]
perf data: Update documentation section on cpu topology
Add an explanation of each cpu's core and socket identifier to the
perf.data file format documentation.
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/20180528074433.16652-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Mathieu Poirier [Fri, 25 May 2018 23:10:54 +0000 (17:10 -0600)]
perf cs-etm: Fix indexing for decoder packet queue
The tail of a queue is supposed to be pointing to the next available
slot in a queue. In this implementation the tail is incremented before
it is used and as such points to the last used element, something that
has the immense advantage of centralizing tail management at a single
location and eliminating a lot of redundant code.
But this needs to be taken into consideration on the dequeueing side
where the head also needs to be incremented before it is used, or the
first available element of the queue will be skipped.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Tested-by: Leo Yan <leo.yan@linaro.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robert Walker <robert.walker@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Link: http://lkml.kernel.org/r/1527289854-10755-1-git-send-email-mathieu.poirier@linaro.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
YueHaibing [Fri, 11 May 2018 11:21:42 +0000 (19:21 +0800)]
perf bpf: Fix NULL return handling in bpf__prepare_load()
bpf_object__open()/bpf_object__open_buffer can return error pointer or
NULL, check the return values with IS_ERR_OR_NULL() in bpf__prepare_load
and bpf__prepare_load_buffer
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: netdev@vger.kernel.org
Link: https://lkml.kernel.org/n/tip-psf4xwc09n62al2cb9s33v9h@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Neil Armstrong [Wed, 30 May 2018 09:43:58 +0000 (11:43 +0200)]
drm/bridge/synopsys: dw-hdmi: fix dw_hdmi_setup_rx_sense
The dw_hdmi_setup_rx_sense exported function should not use struct device
to recover the dw-hdmi context using drvdata, but take struct dw_hdmi
directly like other exported functions.
This caused a regression using Meson DRM on S905X since v4.17-rc1 :
Internal error: Oops:
96000007 [#1] PREEMPT SMP
[...]
CPU: 0 PID: 124 Comm: irq/32-dw_hdmi_ Not tainted 4.17.0-rc7 #2
Hardware name: Libre Technology CC (DT)
[...]
pc : osq_lock+0x54/0x188
lr : __mutex_lock.isra.0+0x74/0x530
[...]
Process irq/32-dw_hdmi_ (pid: 124, stack limit = 0x00000000adf418cb)
Call trace:
osq_lock+0x54/0x188
__mutex_lock_slowpath+0x10/0x18
mutex_lock+0x30/0x38
__dw_hdmi_setup_rx_sense+0x28/0x98
dw_hdmi_setup_rx_sense+0x10/0x18
dw_hdmi_top_thread_irq+0x2c/0x50
irq_thread_fn+0x28/0x68
irq_thread+0x10c/0x1a0
kthread+0x128/0x130
ret_from_fork+0x10/0x18
Code:
34000964 d00050a2 51000484 9135c042 (
f864d844)
---[ end trace
945641e1fbbc07da ]---
note: irq/32-dw_hdmi_[124] exited with preempt_count 1
genirq: exiting task "irq/32-dw_hdmi_" (124) is an active IRQ thread (irq 32)
Fixes:
eea034af90c6 ("drm/bridge/synopsys: dw-hdmi: don't clobber drvdata")
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Tested-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1527673438-20643-1-git-send-email-narmstrong@baylibre.com
Jason Wang [Tue, 29 May 2018 06:18:19 +0000 (14:18 +0800)]
vhost_net: flush batched heads before trying to busy polling
After commit
e2b3b35eb989 ("vhost_net: batch used ring update in rx"),
we tend to batch updating used heads. But it doesn't flush batched
heads before trying to do busy polling, this will cause vhost to wait
for guest TX which waits for the used RX. Fixing by flush batched
heads before busy loop.
1 byte TCP_RR performance recovers from 13107.83 to 50402.65.
Fixes:
e2b3b35eb989 ("vhost_net: batch used ring update in rx")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Wed, 30 May 2018 15:30:30 +0000 (10:30 -0500)]
Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux
Pull s390 fixes from Martin Schwidefsky:
- a missing -msoft-float for the compile of the kexec purgatory
- a fix for the dasd driver to avoid the double use of a field in the
'struct request'
[ That latter one is being discussed, and Christoph asked for something
cleaner, but for now it's a fix ]
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390/dasd: use blk_mq_rq_from_pdu for per request data
s390/purgatory: Fix endless interrupt loop
Thomas Richter [Mon, 28 May 2018 07:36:57 +0000 (09:36 +0200)]
perf test: "Session topology" dumps core on s390
The "perf test Session topology" entry fails with core dump on s390. The root
cause is a NULL pointer dereference in function check_cpu_topology() line 76
(or line 82 without -v).
The session->header.env.cpu variable is NULL because on s390 function
process_cpu_topology() returns with error:
socket_id number is too big.
You may need to upgrade the perf tool.
and releases the env.cpu variable via zfree() and sets it to NULL.
Here is the gdb output:
(gdb) n
76 pr_debug("CPU %d, core %d, socket %d\n", i,
(gdb) n
Program received signal SIGSEGV, Segmentation fault.
0x00000000010f4d9e in check_cpu_topology (path=0x3ffffffd6c8
"/tmp/perf-test-J6CHMa", map=0x14a1740) at tests/topology.c:76
76 pr_debug("CPU %d, core %d, socket %d\n", i,
(gdb)
Make sure the env.cpu variable is not used when its NULL.
Test for NULL pointer and return TEST_SKIP if so.
Output before:
[root@p23lp27 perf]# ./perf test -F 39
39: Session topology :Segmentation fault (core dumped)
[root@p23lp27 perf]#
Output after:
[root@p23lp27 perf]# ./perf test -vF 39
39: Session topology :
--- start ---
templ file: /tmp/perf-test-Ajx59D
socket_id number is too big.You may need to upgrade the perf tool.
---- end ----
Session topology: Skip
[root@p23lp27 perf]#
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/20180528073657.11743-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Kan Liang [Mon, 7 May 2018 21:13:43 +0000 (14:13 -0700)]
perf parse-events: Handle uncore event aliases in small groups properly
Perf stat doesn't count the uncore event aliases from the same uncore
block in a group, for example:
perf stat -e '{unc_m_cas_count.all,unc_m_clockticks}' -a -I 1000
# time counts unit events
1.
000447342 <not counted> unc_m_cas_count.all
1.
000447342 <not counted> unc_m_clockticks
2.
000740654 <not counted> unc_m_cas_count.all
2.
000740654 <not counted> unc_m_clockticks
The output is very misleading. It gives a wrong impression that the
uncore event doesn't work.
An uncore block could be composed by several PMUs. An uncore event alias
is a joint name which means the same event runs on all PMUs of a block.
Perf doesn't support mixed events from different PMUs in the same group.
It is wrong to put uncore event aliases in a big group.
The right way is to split the big group into multiple small groups which
only include the events from the same PMU.
Only uncore event aliases from the same uncore block should be specially
handled here. It doesn't make sense to mix the uncore events with other
uncore events from different blocks or even core events in a group.
With the patch:
# time counts unit events
1.
001557653 140,833 unc_m_cas_count.all
1.
001557653 1,330,231,332 unc_m_clockticks
2.
002709483 85,007 unc_m_cas_count.all
2.
002709483 1,429,494,563 unc_m_clockticks
Reported-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Agustin Vega-Frias <agustinv@codeaurora.org>
Cc: Ganapatrao Kulkarni <ganapatrao.kulkarni@cavium.com>
Cc: Jin Yao <yao.jin@linux.intel.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Will Deacon <will.deacon@arm.com>
Link: http://lkml.kernel.org/r/1525727623-19768-1-git-send-email-kan.liang@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Linus Torvalds [Wed, 30 May 2018 03:22:15 +0000 (22:22 -0500)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
Pull input fixes from Dmitry Torokhov:
"We are switching a bunch of Lenovo devices with Synaptics touchpads
from PS/2 emulation over to native RMI/SMbus.
Given that all commits are marked for stable there is no point
delaying them till next release"
[ Also fix a too-small stack array for i2c communication in elan driver ]
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: elan_i2c_smbus - fix corrupted stack
Input: synaptics - add Lenovo 80 series ids to SMBus
Input: synaptics - add Intertouch support on X1 Carbon 6th and X280
Input: synaptics - Lenovo Thinkpad X1 Carbon G5 (2017) with Elantech trackpoints should use RMI
Input: synaptics - Lenovo Carbon X1 Gen5 (2017) devices should use RMI
Dave Airlie [Wed, 30 May 2018 00:58:31 +0000 (10:58 +1000)]
Merge branch 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
One last fix for 4.17. Fix a suspend regression in DC.
* 'drm-fixes-4.17' of git://people.freedesktop.org/~agd5f/linux:
drm/amd/display: Fix BUG_ON during CRTC atomic check update
Dave Airlie [Wed, 30 May 2018 00:57:57 +0000 (10:57 +1000)]
Merge tag 'drm-misc-fixes-2018-05-29' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
core: Add 220us psr setup time (Dhinakaran)
omap: Fix NULL deref (Tomi)
Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
* tag 'drm-misc-fixes-2018-05-29' of git://anongit.freedesktop.org/drm/drm-misc:
drm/omap: fix NULL deref crash with SDI displays
drm/psr: Fix missed entry in PSR setup time table.
Sachin Grover [Fri, 25 May 2018 08:31:39 +0000 (14:01 +0530)]
selinux: KASAN: slab-out-of-bounds in xattr_getsecurity
Call trace:
[<
ffffff9203a8d7a8>] dump_backtrace+0x0/0x428
[<
ffffff9203a8dbf8>] show_stack+0x28/0x38
[<
ffffff920409bfb8>] dump_stack+0xd4/0x124
[<
ffffff9203d187e8>] print_address_description+0x68/0x258
[<
ffffff9203d18c00>] kasan_report.part.2+0x228/0x2f0
[<
ffffff9203d1927c>] kasan_report+0x5c/0x70
[<
ffffff9203d1776c>] check_memory_region+0x12c/0x1c0
[<
ffffff9203d17cdc>] memcpy+0x34/0x68
[<
ffffff9203d75348>] xattr_getsecurity+0xe0/0x160
[<
ffffff9203d75490>] vfs_getxattr+0xc8/0x120
[<
ffffff9203d75d68>] getxattr+0x100/0x2c8
[<
ffffff9203d76fb4>] SyS_fgetxattr+0x64/0xa0
[<
ffffff9203a83f70>] el0_svc_naked+0x24/0x28
If user get root access and calls security.selinux setxattr() with an
embedded NUL on a file and then if some process performs a getxattr()
on that file with a length greater than the actual length of the string,
it would result in a panic.
To fix this, add the actual length of the string to the security context
instead of the length passed by the userspace process.
Signed-off-by: Sachin Grover <sgrover@codeaurora.org>
Cc: stable@vger.kernel.org
Signed-off-by: Paul Moore <paul@paul-moore.com>
Dave Airlie [Wed, 30 May 2018 00:00:01 +0000 (10:00 +1000)]
Merge tag 'drm-intel-fixes-2018-05-29' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
- Fix for potential Spectre vector in the new query uAPI
- Fix NULL pointer deref (FDO #106559)
- DMI fix to hide LVDS for Radiant P845 (FDO #105468)
* tag 'drm-intel-fixes-2018-05-29' of git://anongit.freedesktop.org/drm/drm-intel:
drm/i915/query: nospec expects no more than an unsigned long
drm/i915/query: Protect tainted function pointer lookup
drm/i915/lvds: Move acpi lid notification registration to registration phase
drm/i915: Disable LVDS on Radiant P845
Linus Torvalds [Tue, 29 May 2018 20:30:16 +0000 (15:30 -0500)]
Merge tag 'afs-fixes-
20180529' of git://git./linux/kernel/git/dhowells/linux-fs
Pull AFS fixes from David Howells:
- fix a BUG triggerable from faccessat()
- fix the mounting of backup volumes
* tag 'afs-fixes-
20180529' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
afs: Fix mounting of backup volumes
afs: Fix directory permissions check
Leo (Sunpeng) Li [Tue, 29 May 2018 13:51:51 +0000 (09:51 -0400)]
drm/amd/display: Fix BUG_ON during CRTC atomic check update
For cases where the CRTC is inactive (DPMS off), where a modeset is not
required, yet the CRTC is still in the atomic state, we should not
attempt to update anything on it.
Previously, we were relying on the modereset_required() helper to check
the above condition. However, the function returns false immediately if
a modeset is not required, ignoring the CRTC's enable/active state
flags. The correct way to filter is by looking at these flags instead.
Fixes:
e277adc5a06c "drm/amd/display: Hookup color management functions"
Bugzilla: https://bugs.freedesktop.org/106194
Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Tested-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Jens Axboe [Tue, 29 May 2018 18:54:12 +0000 (12:54 -0600)]
Merge branch 'nvme-4.17' of git://git.infradead.org/nvme into for-linus
Pull NVMe fix from Christoph:
"Below is a one-liner fix from Max that unbreaks T10-DIF support, which
got broken in 4.15."
* 'nvme-4.17' of git://git.infradead.org/nvme:
nvme: fix extended data LBA supported setting
Max Gurtovoy [Sun, 27 May 2018 15:50:10 +0000 (18:50 +0300)]
nvme: fix extended data LBA supported setting
This value depands on the metadata support value, so reorder the
initialization to fit.
Fixes:
b5be3b392 ("nvme: always unregister the integrity profile in __nvme_revalidate_disk")
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Federico Vaga [Mon, 28 May 2018 08:59:14 +0000 (10:59 +0200)]
i2c: ocores: update HDL sources URL
The URL is broken. This patch fixes it.
Signed-off-by: Federico Vaga <federico.vaga@vaga.pv.it>
[wsa: shortened the URL a bit]
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Parav Pandit [Sun, 27 May 2018 11:49:16 +0000 (14:49 +0300)]
IB/core: Fix error code for invalid GID entry
When a GID entry is invalid EAGAIN is returned. This is an incorrect error
code, there is nothing that will make this GID entry valid again in
bounded time.
Some user space tools fail incorrectly if EAGAIN is returned here, and
this represents a small ABI change from earlier kernels.
The first patch in the Fixes list makes entries that were valid before
to become invalid, allowing this code to trigger, while the second patch
in the Fixes list introduced the wrong EAGAIN.
Therefore revert the return result to EINVAL which matches the historical
expectations of the ibv_query_gid_type() API of the libibverbs user space
library.
Cc: <stable@vger.kernel.org>
Fixes:
598ff6bae689 ("IB/core: Refactor GID modify code for RoCE")
Fixes:
03db3a2d81e6 ("IB/core: Add RoCE GID table management")
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Toshiaki Makita [Mon, 28 May 2018 10:37:49 +0000 (19:37 +0900)]
tun: Fix NULL pointer dereference in XDP redirect
Calling XDP redirection requires bh disabled. Softirq can call another
XDP function and redirection functions, then the percpu static variable
ri->map can be overwritten to NULL.
This is a generic XDP case called from tun.
[ 3535.736058] BUG: unable to handle kernel NULL pointer dereference at
0000000000000018
[ 3535.743974] PGD 0 P4D 0
[ 3535.746530] Oops: 0000 [#1] SMP PTI
[ 3535.750049] Modules linked in: vhost_net vhost tap tun bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc vfat fat ext4 mbcache jbd2 intel_rapl skx_edac nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm ipmi_ssif irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc ses aesni_intel crypto_simd cryptd enclosure hpwdt hpilo glue_helper ipmi_si pcspkr wmi mei_me ioatdma mei ipmi_devintf shpchp dca ipmi_msghandler lpc_ich acpi_power_meter sch_fq_codel ip_tables xfs libcrc32c sd_mod mgag200 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm smartpqi i40e crc32c_intel scsi_transport_sas tg3 i2c_core ptp pps_core
[ 3535.813456] CPU: 5 PID: 1630 Comm: vhost-1614 Not tainted 4.17.0-rc4 #2
[ 3535.820127] Hardware name: HPE ProLiant DL360 Gen10/ProLiant DL360 Gen10, BIOS U32 11/14/2017
[ 3535.828732] RIP: 0010:__xdp_map_lookup_elem+0x5/0x30
[ 3535.833740] RSP: 0018:
ffffb4bc47bf7c58 EFLAGS:
00010246
[ 3535.839009] RAX:
ffff9fdfcfea1c40 RBX:
0000000000000000 RCX:
ffff9fdf27fe3100
[ 3535.846205] RDX:
ffff9fdfca769200 RSI:
0000000000000000 RDI:
0000000000000000
[ 3535.853402] RBP:
ffffb4bc491d9000 R08:
00000000000045ad R09:
0000000000000ec0
[ 3535.860597] R10:
0000000000000001 R11:
ffff9fdf26c3ce4e R12:
ffff9fdf9e72c000
[ 3535.867794] R13:
0000000000000000 R14:
fffffffffffffff2 R15:
ffff9fdfc82cdd00
[ 3535.874990] FS:
0000000000000000(0000) GS:
ffff9fdfcfe80000(0000) knlGS:
0000000000000000
[ 3535.883152] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 3535.888948] CR2:
0000000000000018 CR3:
0000000bde724004 CR4:
00000000007626e0
[ 3535.896145] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
[ 3535.903342] DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
[ 3535.910538] PKRU:
55555554
[ 3535.913267] Call Trace:
[ 3535.915736] xdp_do_generic_redirect+0x7a/0x310
[ 3535.920310] do_xdp_generic.part.117+0x285/0x370
[ 3535.924970] tun_get_user+0x5b9/0x1260 [tun]
[ 3535.929279] tun_sendmsg+0x52/0x70 [tun]
[ 3535.933237] handle_tx+0x2ad/0x5f0 [vhost_net]
[ 3535.937721] vhost_worker+0xa5/0x100 [vhost]
[ 3535.942030] kthread+0xf5/0x130
[ 3535.945198] ? vhost_dev_ioctl+0x3b0/0x3b0 [vhost]
[ 3535.950031] ? kthread_bind+0x10/0x10
[ 3535.953727] ret_from_fork+0x35/0x40
[ 3535.957334] Code: 0e 74 15 83 f8 10 75 05 e9 49 aa b3 ff f3 c3 0f 1f 80 00 00 00 00 f3 c3 e9 29 9d b3 ff 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <8b> 47 18 83 f8 0e 74 0d 83 f8 10 75 05 e9 49 a9 b3 ff 31 c0 c3
[ 3535.976387] RIP: __xdp_map_lookup_elem+0x5/0x30 RSP:
ffffb4bc47bf7c58
[ 3535.982883] CR2:
0000000000000018
[ 3535.987096] ---[ end trace
383b299dd1430240 ]---
[ 3536.131325] Kernel panic - not syncing: Fatal exception
[ 3536.137484] Kernel Offset: 0x26a00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 3536.281406] ---[ end Kernel panic - not syncing: Fatal exception ]---
And a kernel with generic case fixed still panics in tun driver XDP
redirect, because it disabled only preemption, but not bh.
[ 2055.128746] BUG: unable to handle kernel NULL pointer dereference at
0000000000000018
[ 2055.136662] PGD 0 P4D 0
[ 2055.139219] Oops: 0000 [#1] SMP PTI
[ 2055.142736] Modules linked in: vhost_net vhost tap tun bridge stp llc ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter sunrpc vfat fat ext4 mbcache jbd2 intel_rapl skx_edac nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc ses aesni_intel ipmi_ssif crypto_simd enclosure cryptd hpwdt glue_helper ioatdma hpilo wmi dca pcspkr ipmi_si acpi_power_meter ipmi_devintf shpchp mei_me ipmi_msghandler mei lpc_ich sch_fq_codel ip_tables xfs libcrc32c sd_mod mgag200 i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm drm i40e smartpqi tg3 scsi_transport_sas crc32c_intel i2c_core ptp pps_core
[ 2055.206142] CPU: 6 PID: 1693 Comm: vhost-1683 Tainted: G W 4.17.0-rc5-fix-tun+ #1
[ 2055.215011] Hardware name: HPE ProLiant DL360 Gen10/ProLiant DL360 Gen10, BIOS U32 11/14/2017
[ 2055.223617] RIP: 0010:__xdp_map_lookup_elem+0x5/0x30
[ 2055.228624] RSP: 0018:
ffff998b07607cc0 EFLAGS:
00010246
[ 2055.233892] RAX:
ffff8dbd8e235700 RBX:
ffff8dbd8ff21c40 RCX:
0000000000000004
[ 2055.241089] RDX:
ffff998b097a9000 RSI:
0000000000000000 RDI:
0000000000000000
[ 2055.248286] RBP:
0000000000000000 R08:
00000000000065a8 R09:
0000000000005d80
[ 2055.255483] R10:
0000000000000040 R11:
ffff8dbcf0100000 R12:
ffff998b097a9000
[ 2055.262681] R13:
ffff8dbd8c98c000 R14:
0000000000000000 R15:
ffff998b07607d78
[ 2055.269879] FS:
0000000000000000(0000) GS:
ffff8dbd8ff00000(0000) knlGS:
0000000000000000
[ 2055.278039] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 2055.283834] CR2:
0000000000000018 CR3:
0000000c0c8cc005 CR4:
00000000007626e0
[ 2055.291030] DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
[ 2055.298227] DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
[ 2055.305424] PKRU:
55555554
[ 2055.308153] Call Trace:
[ 2055.310624] xdp_do_redirect+0x7b/0x380
[ 2055.314499] tun_get_user+0x10fe/0x12a0 [tun]
[ 2055.318895] tun_sendmsg+0x52/0x70 [tun]
[ 2055.322852] handle_tx+0x2ad/0x5f0 [vhost_net]
[ 2055.327337] vhost_worker+0xa5/0x100 [vhost]
[ 2055.331646] kthread+0xf5/0x130
[ 2055.334813] ? vhost_dev_ioctl+0x3b0/0x3b0 [vhost]
[ 2055.339646] ? kthread_bind+0x10/0x10
[ 2055.343343] ret_from_fork+0x35/0x40
[ 2055.346950] Code: 0e 74 15 83 f8 10 75 05 e9 e9 aa b3 ff f3 c3 0f 1f 80 00 00 00 00 f3 c3 e9 c9 9d b3 ff 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 <8b> 47 18 83 f8 0e 74 0d 83 f8 10 75 05 e9 e9 a9 b3 ff 31 c0 c3
[ 2055.366004] RIP: __xdp_map_lookup_elem+0x5/0x30 RSP:
ffff998b07607cc0
[ 2055.372500] CR2:
0000000000000018
[ 2055.375856] ---[ end trace
2a2dcc5e9e174268 ]---
[ 2055.523626] Kernel panic - not syncing: Fatal exception
[ 2055.529796] Kernel Offset: 0x2e000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[ 2055.677539] ---[ end Kernel panic - not syncing: Fatal exception ]---
v2:
- Removed preempt_disable/enable since local_bh_disable will prevent
preemption as well, feedback from Jason Wang.
Fixes:
761876c857cb ("tap: XDP support")
Signed-off-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Suresh Reddy [Mon, 28 May 2018 05:26:06 +0000 (01:26 -0400)]
be2net: Fix error detection logic for BE3
Check for 0xE00 (RECOVERABLE_ERR) along with ARMFW UE (0x0)
in be_detect_error() to know whether the error is valid error or not
Fixes:
673c96e5a ("be2net: Fix UE detection logic for BE3")
Signed-off-by: Suresh Reddy <suresh.reddy@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Josh Hill [Mon, 28 May 2018 00:10:41 +0000 (20:10 -0400)]
net: qmi_wwan: Add Netgear Aircard 779S
Add support for Netgear Aircard 779S
Signed-off-by: Josh Hill <josh@joshuajhill.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
Petr Machata [Sun, 27 May 2018 06:48:41 +0000 (09:48 +0300)]
mlxsw: spectrum: Forbid creation of VLAN 1 over port/LAG
VLAN 1 is internally used for untagged traffic. Prevent creation of
explicit netdevice for that VLAN, because that currently isn't supported
and leads to the NULL pointer dereference cited below.
Fix by preventing creation of VLAN devices with VID of 1 over mlxsw
devices or LAG devices that involve mlxsw devices.
[ 327.175816] ================================================================================
[ 327.184544] UBSAN: Undefined behaviour in drivers/net/ethernet/mellanox/mlxsw/spectrum_fid.c:200:12
[ 327.193667] member access within null pointer of type 'const struct mlxsw_sp_fid'
[ 327.201226] CPU: 0 PID: 8983 Comm: ip Not tainted 4.17.0-rc4-petrm_net_ip6gre_headroom-custom-140 #11
[ 327.210496] Hardware name: Mellanox Technologies Ltd. "MSN2410-CB2F"/"SA000874", BIOS 4.6.5 03/08/2016
[ 327.219872] Call Trace:
[ 327.222384] dump_stack+0xc3/0x12b
[ 327.234007] ubsan_epilogue+0x9/0x49
[ 327.237638] ubsan_type_mismatch_common+0x1f9/0x2d0
[ 327.255769] __ubsan_handle_type_mismatch+0x90/0xa7
[ 327.264716] mlxsw_sp_fid_type+0x35/0x50 [mlxsw_spectrum]
[ 327.270255] mlxsw_sp_port_vlan_router_leave+0x46/0xc0 [mlxsw_spectrum]
[ 327.277019] mlxsw_sp_inetaddr_port_vlan_event+0xe1/0x340 [mlxsw_spectrum]
[ 327.315031] mlxsw_sp_netdevice_vrf_event+0xa8/0x100 [mlxsw_spectrum]
[ 327.321626] mlxsw_sp_netdevice_event+0x276/0x430 [mlxsw_spectrum]
[ 327.367863] notifier_call_chain+0x4c/0x150
[ 327.372128] __netdev_upper_dev_link+0x1b3/0x260
[ 327.399450] vrf_add_slave+0xce/0x170 [vrf]
[ 327.403703] do_setlink+0x658/0x1d70
[ 327.508998] rtnl_newlink+0x908/0xf20
[ 327.559128] rtnetlink_rcv_msg+0x50c/0x720
[ 327.571720] netlink_rcv_skb+0x16a/0x1f0
[ 327.583450] netlink_unicast+0x2ca/0x3e0
[ 327.599305] netlink_sendmsg+0x3e2/0x7f0
[ 327.616655] sock_sendmsg+0x76/0xc0
[ 327.620207] ___sys_sendmsg+0x494/0x5d0
[ 327.666117] __sys_sendmsg+0xc2/0x130
[ 327.690953] do_syscall_64+0x66/0x370
[ 327.694677] entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 327.699782] RIP: 0033:0x7f4c2f3f8037
[ 327.703393] RSP: 002b:
00007ffe8c389708 EFLAGS:
00000246 ORIG_RAX:
000000000000002e
[ 327.711035] RAX:
ffffffffffffffda RBX:
000000005b03f53e RCX:
00007f4c2f3f8037
[ 327.718229] RDX:
0000000000000000 RSI:
00007ffe8c389760 RDI:
0000000000000003
[ 327.725431] RBP:
00007ffe8c389760 R08:
0000000000000000 R09:
00007f4c2f443630
[ 327.732632] R10:
00000000000005eb R11:
0000000000000246 R12:
0000000000000000
[ 327.739833] R13:
00000000006774e0 R14:
00007ffe8c3897e8 R15:
0000000000000000
[ 327.747096] ================================================================================
Fixes:
9589a7b5d7d9 ("mlxsw: spectrum: Handle VLAN devices linking / unlinking")
Suggested-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ivan Bornyakov [Fri, 25 May 2018 17:49:52 +0000 (20:49 +0300)]
atm: zatm: fix memcmp casting
memcmp() returns int, but eprom_try_esi() cast it to unsigned char. One
can lose significant bits and get 0 from non-0 value returned by the
memcmp().
Signed-off-by: Ivan Bornyakov <brnkv.i1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Tue, 29 May 2018 12:28:48 +0000 (07:28 -0500)]
Merge tag 'trace-v4.17-rc4-3' of git://git./linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"While writing selftests for a new feature, I triggered two existing
bugs that deal with triggers and instances.
- a generic trigger bug where the triggers are not removed from a
linked list properly when deleting an instance.
- a bug specific to snapshots, where the snapshot is done in the top
level buffer, when it is supposed to snapshot the buffer associated
to the instance the snapshot trigger exists in"
* tag 'trace-v4.17-rc4-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Make the snapshot trigger work with instances
tracing: Fix crash when freeing instances with event triggers
Chris Wilson [Tue, 22 May 2018 12:10:18 +0000 (13:10 +0100)]
drm/i915/query: nospec expects no more than an unsigned long
nospec quite reasonably asserts that it will never be used with an index
larger than unsigned long (that being the largest possibly index into an
C array). However, our ubi uses the convention of u64 for any large
integer, running afoul of the assertion on 32b. Reduce our index to an
unsigned long, checking for type overflow first.
drivers/gpu/drm/i915/i915_query.c: In function 'i915_query_ioctl':
include/linux/compiler.h:339:38: error: call to '__compiletime_assert_119' declared with attribute error: BUILD_BUG_ON failed: sizeof(_s) > sizeof(long)
Reported-by: kbuild-all@01.org
Fixes:
84b510e22da7 ("drm/i915/query: Protect tainted function pointer lookup")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180522121018.15199-1-chris@chris-wilson.co.uk
(cherry picked from commit
a33b1dc8a732144e11cb4bf067d24ba51e6b8ab0)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Hao Wei Tee [Tue, 29 May 2018 07:25:17 +0000 (10:25 +0300)]
iwlwifi: pcie: compare with number of IRQs requested for, not number of CPUs
When there are 16 or more logical CPUs, we request for
`IWL_MAX_RX_HW_QUEUES` (16) IRQs only as we limit to that number of
IRQs, but later on we compare the number of IRQs returned to
nr_online_cpus+2 instead of max_irqs, the latter being what we
actually asked for. This ends up setting num_rx_queues to 17 which
causes lots of out-of-bounds array accesses later on.
Compare to max_irqs instead, and also add an assertion in case
num_rx_queues > IWM_MAX_RX_HW_QUEUES.
This fixes https://bugzilla.kernel.org/show_bug.cgi?id=199551
Fixes:
2e5d4a8f61dc ("iwlwifi: pcie: Add new configuration to enable MSIX")
Signed-off-by: Hao Wei Tee <angelsl@in04.sg>
Tested-by: Sara Sharon <sara.sharon@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Stanislaw Gruszka [Mon, 28 May 2018 11:25:06 +0000 (13:25 +0200)]
Revert "rt2800: use TXOP_BACKOFF for probe frames"
This reverts commit
fb47ada8dc3c30c8e7b415da155742b49536c61e.
In some situations when we set TXOP_BACKOFF, the probe frame is
not sent at all. What it worse then sending probe frame as part
of AMPDU and can degrade 11n performance to 11g rates.
Cc: stable@vger.kernel.org
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
projects / platform / kernel / linux-starfive.git / log