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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.
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
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)
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Merge tag 'mips_fixes_4.17_3' of git://git.kernel.org/pub/scm/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
- Revert a pfn page mapping optimization identified as introducing
a bad page state regression (Alex Williamson)
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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"
Here are 4 small bugfixes for some char/misc drivers. Well, really 3
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.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-4.17-rc8' of git://git.kernel.org/pub/scm/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
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.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'staging-4.17-rc8' of git://git.kernel.org/pub/scm/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
- 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
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/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
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()
George Boole would have noticed a slight error in 4.16 commit
69d763fc6d ("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: 69d763fc6d ("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>
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 605ca5ede7
("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 baa355fd33 ("thp: file pages support for split_huge_page()")
introduced it, but liable to erase PageWaiters after 4.10's 6290602709
("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: 6290602709 ("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>
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: 356e88ebe4 ("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>
- Clear out i_mapping error state when we're reinitializing inodes.
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Merge tag 'xfs-4.17-fixes-3' of git://git.kernel.org/pub/scm/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
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>
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>
Fix NULL pointer dereference in asus-wmi on rfkill cleanup.
The following is an automated git shortlog grouped by driver:
asus-wmi:
- Fix NULL pointer dereference
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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
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>
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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
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Merge tag 'selinux-pr-20180530' of git://git.kernel.org/pub/scm/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
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
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: eea034af90 ("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
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
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
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
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>
- 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
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
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: e277adc5a0 "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>
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
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
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>
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: 598ff6bae6 ("IB/core: Refactor GID modify code for RoCE")
Fixes: 03db3a2d81 ("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>
bugs that deal with triggers and instances.
The first is a generic trigger bug where the triggers are not removed
from a link list properly when deleting an instance.
The second is specific to snapshots, where the snapshot is does the
snapshot to the top level buffer, when it is suppose to snapshot the
buffer associated to the instance the snapshot trigger exists in.
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Merge tag 'trace-v4.17-rc4-3' of git://git.kernel.org/pub/scm/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
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: 84b510e22d ("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 a33b1dc8a7)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
The snapshot trigger currently only affects the main ring buffer, even when
it is used by the instances. This can be confusing as the snapshot trigger
is listed in the instance.
> # cd /sys/kernel/tracing
> # mkdir instances/foo
> # echo snapshot > instances/foo/events/syscalls/sys_enter_fchownat/trigger
> # echo top buffer > trace_marker
> # echo foo buffer > instances/foo/trace_marker
> # touch /tmp/bar
> # chown rostedt /tmp/bar
> # cat instances/foo/snapshot
# tracer: nop
#
#
# * Snapshot is freed *
#
# Snapshot commands:
# echo 0 > snapshot : Clears and frees snapshot buffer
# echo 1 > snapshot : Allocates snapshot buffer, if not already allocated.
# Takes a snapshot of the main buffer.
# echo 2 > snapshot : Clears snapshot buffer (but does not allocate or free)
# (Doesn't have to be '2' works with any number that
# is not a '0' or '1')
> # cat snapshot
# tracer: nop
#
# _-----=> irqs-off
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / delay
# TASK-PID CPU# |||| TIMESTAMP FUNCTION
# | | | |||| | |
bash-1189 [000] .... 111.488323: tracing_mark_write: top buffer
Not only did the snapshot occur in the top level buffer, but the instance
snapshot buffer should have been allocated, and it is still free.
Cc: stable@vger.kernel.org
Fixes: 85f2b08268 ("tracing: Add basic event trigger framework")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Several subsystems depend on INFINIBAND_ADDR_TRANS, which in turn depends
on INFINIBAND. However, when with CONFIG_INIFIBAND=m, this leads to a
link error when another driver using it is built-in. The
INFINIBAND_ADDR_TRANS dependency is insufficient here as this is
a 'bool' symbol that does not force anything to be a module in turn.
fs/cifs/smbdirect.o: In function `smbd_disconnect_rdma_work':
smbdirect.c:(.text+0x1e4): undefined reference to `rdma_disconnect'
net/9p/trans_rdma.o: In function `rdma_request':
trans_rdma.c:(.text+0x7bc): undefined reference to `rdma_disconnect'
net/9p/trans_rdma.o: In function `rdma_destroy_trans':
trans_rdma.c:(.text+0x830): undefined reference to `ib_destroy_qp'
trans_rdma.c:(.text+0x858): undefined reference to `ib_dealloc_pd'
Fixes: 9533b292a7 ("IB: remove redundant INFINIBAND kconfig dependencies")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Greg Thelen <gthelen@google.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Here is the nds32 patch set based on 4.17-rc6.
Contained in here are the bug fixes and building error fixes for nds32.
These are the LTP20170427 testing results. hackbench01 may fail sometimes.
We are still investigating this issue.
Total Tests: 1902
Total Skipped Tests: 593
Total Failures: 420
Kernel Version: 4.17.0-rc6-00018-ga30e7d1e37e8
Machine Architecture: nds32
Total Tests: 1902
Total Skipped Tests: 593
Total Failures: 419
Kernel Version: 4.17.0-rc5-00018-g27288975a735
Machine Architecture: nds32
Signed-off-by: Greentime Hu <greentime@andestech.com>
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Merge tag 'nds32-for-linus-4.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux
Pull nds32 fixes from Greentime Hu:
"Bug fixes and build error fixes for nds32"
* tag 'nds32-for-linus-4.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/greentime/linux:
nds32: Fix compiler warning, Wstringop-overflow, in vdso.c
nds32: Disable local irq before calling cpu_dcache_wb_page in copy_user_highpage
nds32: Flush the cache of the page at vmaddr instead of kaddr in flush_anon_page
nds32: Correct flush_dcache_page function
nds32: Fix the unaligned access handler
nds32: Renaming the file for unaligned access
nds32: To fix a cache inconsistency issue by setting correct cacheability of NTC
nds32: To refine readability of INT_MASK_INITAIAL_VAL
nds32: Fix the virtual address may map too much range by tlbop issue.
nds32: Fix the allmodconfig build. To make sure CONFIG_CPU_LITTLE_ENDIAN is default y
nds32: Fix build failed because arch_trace_hardirqs_off is changed to trace_hardirqs_off.
nds32: Fix the unknown type u8 issue.
nds32: Fix the symbols undefined issue by exporting them.
nds32: Fix xfs_buf built failed by export invalidate_kernel_vmap_range and flush_kernel_vmap_range
nds32: Fix drivers/gpu/drm/udl/udl_fb.c building error by defining PAGE_SHARED
nds32: Fix building error of crypto/xor.c by adding xor.h
nds32: Fix building error when CONFIG_FREEZE is enabled.
nds32: lib: To use generic lib instead of libgcc to prevent the symbol undefined issue.
Smatch identifies i915_query_ioctl() as being a potential victim of
Spectre due to its use of a tainted user index into a function pointer
array. Use array_index_nospec() to defang the user index before using it
to lookup the function pointer.
Fixes: a446ae2c6e ("drm/i915: add query uAPI")
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/20180521210530.26008-1-chris@chris-wilson.co.uk
(cherry picked from commit 84b510e22d)
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
If a instance has an event trigger enabled when it is freed, it could cause
an access of free memory. Here's the case that crashes:
# cd /sys/kernel/tracing
# mkdir instances/foo
# echo snapshot > instances/foo/events/initcall/initcall_start/trigger
# rmdir instances/foo
Would produce:
general protection fault: 0000 [#1] PREEMPT SMP PTI
Modules linked in: tun bridge ...
CPU: 5 PID: 6203 Comm: rmdir Tainted: G W 4.17.0-rc4-test+ #933
Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01 v03.03 07/14/2016
RIP: 0010:clear_event_triggers+0x3b/0x70
RSP: 0018:ffffc90003783de0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 6b6b6b6b6b6b6b2b RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8800c7130ba0
RBP: ffffc90003783e00 R08: ffff8801131993f8 R09: 0000000100230016
R10: ffffc90003783d80 R11: 0000000000000000 R12: ffff8800c7130ba0
R13: ffff8800c7130bd8 R14: ffff8800cc093768 R15: 00000000ffffff9c
FS: 00007f6f4aa86700(0000) GS:ffff88011eb40000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6f4a5aed60 CR3: 00000000cd552001 CR4: 00000000001606e0
Call Trace:
event_trace_del_tracer+0x2a/0xc5
instance_rmdir+0x15c/0x200
tracefs_syscall_rmdir+0x52/0x90
vfs_rmdir+0xdb/0x160
do_rmdir+0x16d/0x1c0
__x64_sys_rmdir+0x17/0x20
do_syscall_64+0x55/0x1a0
entry_SYSCALL_64_after_hwframe+0x49/0xbe
This was due to the call the clears out the triggers when an instance is
being deleted not removing the trigger from the link list.
Cc: stable@vger.kernel.org
Fixes: 85f2b08268 ("tracing: Add basic event trigger framework")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
- enable -fno-tree-loop-im only when supported
- add -fno-PIE option before the asm-goto test
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Merge tag 'kbuild-fixes-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild
Pull more Kbuild fixes from Masahiro Yamada:
- enable '-fno-tree-loop-im' only when supported
- add '-fno-PIE' option before the asm-goto test
* tag 'kbuild-fixes-v4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
Makefile: disable PIE before testing asm goto
kbuild: gcov: enable -fno-tree-loop-im if supported
A few more fixes for v4.17:
- A fix for a crash in scm_call_atomic on qcom platforms
- Display fix for Allwinner A10
- A fix that re-enables ethernet on Allwinner H3 (C.H.I.P et al)
- A fix for eMMC corruption on hikey
- i2c-gpio descriptor tables for ixp4xx
+ a small typo fix
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"A few more fixes for v4.17:
- a fix for a crash in scm_call_atomic on qcom platforms
- display fix for Allwinner A10
- a fix that re-enables ethernet on Allwinner H3 (C.H.I.P et al)
- a fix for eMMC corruption on hikey
- i2c-gpio descriptor tables for ixp4xx
... plus a small typo fix"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: Fix i2c-gpio GPIO descriptor tables
arm64: dts: hikey: Fix eMMC corruption regression
firmware: qcom: scm: Fix crash in qcom_scm_call_atomic1()
ARM: sun8i: v3s: fix spelling mistake: "disbaled" -> "disabled"
ARM: dts: sun4i: Fix incorrect clocks for displays
ARM: dts: sun8i: h3: Re-enable EMAC on Orange Pi One
Pull x86 store buffer fixes from Thomas Gleixner:
"Two fixes for the SSBD mitigation code:
- expose SSBD properly to guests. This got broken when the CPU
feature flags got reshuffled.
- simplify the CPU detection logic to avoid duplicate entries in the
tables"
* 'x86-pti-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/speculation: Simplify the CPU bug detection logic
KVM/VMX: Expose SSBD properly to guests
Pull scheduler fixes from Thomas Gleixner:
"Three fixes for scheduler and kthread code:
- allow calling kthread_park() on an already parked thread
- restore the sched_pi_setprio() tracepoint behaviour
- clarify the unclear string for the scheduling domain debug output"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched, tracing: Fix trace_sched_pi_setprio() for deboosting
kthread: Allow kthread_park() on a parked kthread
sched/topology: Clarify root domain(s) debug string
