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From David Howells:
"There are two sets of patches here:
(1) A bunch of core keyrings bug fixes from Eric Biggers.
(2) Fixing big_key to use safe crypto from Jason A. Donenfeld."
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This patch fixes the starting offset used when scanning chunks to
compute the chunk statistics. The value start_offset (and end_offset)
are managed in bytes while the traversal occurs over bits. Thus for the
reserved and dynamic chunk, it may incorrectly skip over the initial
allocations.
Signed-off-by: Dennis Zhou <dennisszhou@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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Currently we acknowledge errors before clearing the error status.
This could cause a new error to be populated by firmware in-between
the error acknowledgment and the error status clearing which would
cause the second error's status to be cleared without being handled.
So, clear the error status before acknowledging the errors.
Also, make sure to acknowledge the error if the error status read
fails.
Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org>
Reviewed-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Commit 09b3efec ("bcache: Don't reinvent the wheel but use existing llist
API") replaces the following while loop by llist_for_each_entry(),
-
- while (reverse) {
- cl = container_of(reverse, struct closure, list);
- reverse = llist_next(reverse);
-
+ llist_for_each_entry(cl, reverse, list) {
closure_set_waiting(cl, 0);
closure_sub(cl, CLOSURE_WAITING + 1);
}
This modification introduces a potential race by iterating a corrupted
list. Here is how it happens.
In the above modification, closure_sub() may wake up a process which is
waiting on reverse list. If this process decides to wait again by calling
closure_wait(), its cl->list will be added to another wait list. Then
when llist_for_each_entry() continues to iterate next node, it will travel
on another new wait list which is added in closure_wait(), not the
original reverse list in __closure_wake_up(). It is more probably to
happen on UP machine because the waked up process may preempt the process
which wakes up it.
Use llist_for_each_entry_safe() will fix the issue, the safe version fetch
next node before waking up a process. Then the copy of next node will make
sure list iteration stays on original reverse list.
Fixes: 09b3efec81de ("bcache: Don't reinvent the wheel but use existing llist API")
Signed-off-by: Coly Li <colyli@suse.de>
Reported-by: Michael Lyle <mlyle@lyle.org>
Reviewed-by: Byungchul Park <byungchul.park@lge.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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into drm-fixes
A few fixes for 4.14. Nothing too major.
* 'drm-fixes-4.14' of git://people.freedesktop.org/~agd5f/linux:
drm/radeon: disable hard reset in hibernate for APUs
drm/amdgpu: revert tile table update for oland
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into drm-fixes
Just two small etnaviv fixes, one fixing a list corruption, the other
fixing a NULL ptr deref in an error path.
* 'etnaviv/fixes' of https://git.pengutronix.de/git/lst/linux:
etnaviv: fix gem object list corruption
etnaviv: fix submit error path
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git://people.freedesktop.org/~gabbayo/linux into drm-fixes
It contains the following fixes:
- correct checking of return value
- send correct parameter to function (According to the parameter type)
- avoid spamming of dmesg log
- fix queue wrapping calculations
* tag 'drm-amdkfd-fixes-2017-09-24' of git://people.freedesktop.org/~gabbayo/linux:
drm/amdkfd: Print event limit messages only once per process
drm/amdkfd: Fix kernel-queue wrapping bugs
drm/amdkfd: Fix incorrect destroy_mqd parameter
drm/amdkfd: check for null dev to avoid a null pointer dereference
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull quota and isofs fixes from Jan Kara:
"Two quota fixes (fallout of the quota locking changes) and an isofs
build fix"
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
quota: Fix quota corruption with generic/232 test
isofs: fix build regression
quota: add missing lock into __dquot_transfer()
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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull kselftest fixes from Shuah Khan:
"This update consists of:
- fixes to several existing tests
- a test for regression introduced by b9470c27607b ("inet: kill
smallest_size and smallest_port")
- seccomp support for glibc 2.26 siginfo_t.h
- fixes to kselftest framework and tests to run make O=dir use-case
- fixes to silence unnecessary test output to de-clutter test results"
* tag 'linux-kselftest-4.14-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: (28 commits)
selftests: timers: set-timer-lat: Fix hang when testing unsupported alarms
selftests: timers: set-timer-lat: fix hang when std out/err are redirected
selftests/memfd: correct run_tests.sh permission
selftests/seccomp: Support glibc 2.26 siginfo_t.h
selftests: futex: Makefile: fix for loops in targets to run silently
selftests: Makefile: fix for loops in targets to run silently
selftests: mqueue: Use full path to run tests from Makefile
selftests: futex: copy sub-dir test scripts for make O=dir run
selftests: lib.mk: copy test scripts and test files for make O=dir run
selftests: sync: kselftest and kselftest-clean fail for make O=dir case
selftests: sync: use TEST_CUSTOM_PROGS instead of TEST_PROGS
selftests: lib.mk: add TEST_CUSTOM_PROGS to allow custom test run/install
selftests: watchdog: fix to use TEST_GEN_PROGS and remove clean
selftests: lib.mk: fix test executable status check to use full path
selftests: Makefile: clear LDFLAGS for make O=dir use-case
selftests: lib.mk: kselftest and kselftest-clean fail for make O=dir case
Makefile: kselftest and kselftest-clean fail for make O=dir case
selftests/net: msg_zerocopy enable build with older kernel headers
selftests: actually run the various net selftests
selftest: add a reuseaddr test
...
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This is a straight forward addition of runtime and system sleep pm operations
that handle clk and pinctrl (for runtime pm) and spi_master_{suspend,resume}
(for system sleep).
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
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The memory controller on ThunderX/OcteonTX systems does not support
power management. Therefore remove the suspend/resume callbacks.
Signed-off-by: Jan Glauber <jglauber@cavium.com>
Cc: David Daney <david.daney@cavium.com>
Cc: Jan Glauber <jglauber@cavium.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Suzuki K Poulose <Suzuki.Poulose@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Cc: Zhangshaokun <zhangshaokun@hisilicon.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-edac <linux-edac@vger.kernel.org>
Cc: linux-mips@linux-mips.org
Link: http://lkml.kernel.org/r/20170925123502.17289-2-jglauber@cavium.com
Signed-off-by: Borislav Petkov <bp@suse.de>
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When calculating the size needed by struct atmel_pmecc_user *user,
the dmu and delta buffer sizes were forgotten.
This lead to a memory corruption (especially with a large ecc_strength).
Link: http://lkml.kernel.org/r/1506503157.3016.5.camel@gmail.com
Fixes: f88fc122cc34 ("mtd: nand: Cleanup/rework the atmel_nand driver")
Cc: stable@vger.kernel.org
Reported-by: Richard Genoud <richard.genoud@gmail.com>
Pointed-at-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Richard Genoud <richard.genoud@gmail.com>
Reviewed-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fpu fixes and cleanups from Ingo Molnar:
"This is _way_ more cleanups than fixes, but the bugs were subtle and
hard to hit, and the primary reason for them existing was the
unnecessary historical complexity of some of the x86/fpu interfaces.
The first bunch of commits clean up and simplify the xstate user copy
handling functions, in reaction to the collective head-scratching
about the xstate user-copy handling code that leads up to the fix for
this SkyLake xstate handling bug:
0852b374173b: x86/fpu: Add FPU state copying quirk to handle XRSTOR failure on Intel Skylake CPUs
The cleanups don't change any functionality, they just (hopefully)
make it all clearer, more consistent, more debuggable and more robust.
Note that most of the linecount increase comes from these commits,
where we better split the user/kernel copy logic by having more
variants, instead repeated fragile patterns of:
if (kbuf) {
memcpy(kbuf + pos, data, copy);
} else {
if (__copy_to_user(ubuf + pos, data, copy))
return -EFAULT;
}
The next bunch of commits simplify the FPU state-machine to get rid of
old lazy-FPU idiosyncrasies - a defensive simplification to make all
the code easier to review and fix. No change in functionality.
Then there's a couple of additional debugging tweaks: static checker
warning fix and move an FPU related warning to under WARN_ON_FPU(),
followed by another bunch of commits that represent a finegrained
split-up of the fixes from Eric Biggers to handle weird xstate bits
properly.
I did this finegrained split-up because some of these fixes also
impact the ABI for weird xstate handling, for which we'd like to have
good bisection results, should they cause any problems. (We also had
one regression with the more monolithic fixes, so splitting it all up
sounded prudent for robustness reasons as well.)
About the whole series: the commits up to 03eaec81ac09 have been in
-next for months - but I've recently rebased them to remove a state
machine clean-up commit that was objected to, and to make it more
bisectable - so technically it's a new, rebased tree.
Robustness history: this series had some regressions along the way,
and all reported regressions have been fixed. All but one of the
regressions manifested itself as easy to report warnings. The previous
version of this latest series was also in linux-next, with one
(warning-only) regression reported which is fixed in the latest
version.
Barring last minute brown paper bag bugs (and the commits are now
older by a day which I'd hope helps paperbag reduction), I'm
reasonably confident about its general robustness.
Famous last words ..."
* 'x86-fpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (42 commits)
x86/fpu: Use using_compacted_format() instead of open coded X86_FEATURE_XSAVES
x86/fpu: Use validate_xstate_header() to validate the xstate_header in copy_user_to_xstate()
x86/fpu: Eliminate the 'xfeatures' local variable in copy_user_to_xstate()
x86/fpu: Copy the full header in copy_user_to_xstate()
x86/fpu: Use validate_xstate_header() to validate the xstate_header in copy_kernel_to_xstate()
x86/fpu: Eliminate the 'xfeatures' local variable in copy_kernel_to_xstate()
x86/fpu: Copy the full state_header in copy_kernel_to_xstate()
x86/fpu: Use validate_xstate_header() to validate the xstate_header in __fpu__restore_sig()
x86/fpu: Use validate_xstate_header() to validate the xstate_header in xstateregs_set()
x86/fpu: Introduce validate_xstate_header()
x86/fpu: Rename fpu__activate_fpstate_read/write() to fpu__prepare_[read|write]()
x86/fpu: Rename fpu__activate_curr() to fpu__initialize()
x86/fpu: Simplify and speed up fpu__copy()
x86/fpu: Fix stale comments about lazy FPU logic
x86/fpu: Rename fpu::fpstate_active to fpu::initialized
x86/fpu: Remove fpu__current_fpstate_write_begin/end()
x86/fpu: Fix fpu__activate_fpstate_read() and update comments
x86/fpu: Reinitialize FPU registers if restoring FPU state fails
x86/fpu: Don't let userspace set bogus xcomp_bv
x86/fpu: Turn WARN_ON() in context switch into WARN_ON_FPU()
...
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Single-rank DIMMs did not get detected on Skylake/Kabylake systems due
to wrong limit check. The single rank DIMM check is a simple typo. "0"
is a legal value in this field meaning single rank.
Signed-off-by: Charles Rose <charles.rose@dell.com>
Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Link: http://lkml.kernel.org/r/66df72d327c265fbf92fe25df96daa228a35f076.1506358467.git.tony.luck@intel.com
[ Also fix debug message to print number of ranks. ]
Signed-off-by: Tony Luck <tony.luck@intel.com>
[ Expand commit message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
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Failure to tune PCIe capabilities should not fail driver load. This can
cause the driver load to fail on systems with any of the following:
1. HFI's parent is not root. Example: HFI card is behind a PCIe bridge.
2. HFI's parent is not PCI Express capable.
In these situations, failure to tune PCIe capabilities should be logged
in the system message logs but not cause the driver load to fail.
This patch also ensures pcie capability word DevCtl is written only
after a successful read and the capability tuning process continues
even if read/write of the pcie capability word DevCtl fails.
Fixes: c53df62c7a9a ("IB/hfi1: Check return values from PCI config API calls")
Fixes: bf70a7757736 ("staging/rdma/hfi1: Enable WFR PCIe extended tags from the driver")
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Jakub Byczkowski <jakub.byczkowski@intel.com>
Signed-off-by: Harish Chegondi <harish.chegondi@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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During base context setup, if setup_base_ctxt() fails, the context is
deallocated. This is incorrect because the context is referenced on
return, to notify any waiting subcontext. If there are no subcontexts
the pointer will be invalid.
Reorganize the error path so that deallocate_ctxt() is called after all
the possible subcontexts have been notified.
Reviewed-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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commit 9a9b8112699d will cause core to fail UD QP from being destroyed
on ipoib unload, therefore cause resources leakage.
On pkey change event above patch modifies mgid before calling underlying
driver to detach it from QP. Drivers' detach_mcast() will fail to find
modified mgid it was never given to attach in a first place.
Core qp->usecnt will never go down, so ib_destroy_qp() will fail.
IPoIB driver actually does take care of new broadcast mgid based on new
pkey by destroying an old mcast object in ipoib_mcast_dev_flush())
....
if (priv->broadcast) {
rb_erase(&priv->broadcast->rb_node, &priv->multicast_tree);
list_add_tail(&priv->broadcast->list, &remove_list);
priv->broadcast = NULL;
}
...
then in restarted ipoib_macst_join_task() creating a new broadcast mcast
object, sending join request and on completion tells the driver to attach
to reinitialized QP:
...
if (!priv->broadcast) {
...
broadcast = ipoib_mcast_alloc(dev, 0);
...
memcpy(broadcast->mcmember.mgid.raw, priv->dev->broadcast + 4,
sizeof (union ib_gid));
priv->broadcast = broadcast;
...
Fixes: 9a9b8112699d ("IB/ipoib: Update broadcast object if PKey value was changed in index 0")
Cc: stable@vger.kernel.org
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Alex Estrin <alex.estrin@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Feras Daoud <ferasda@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The general interrupt handler returns IRQ_HANDLED whether an IRQ
was handled or not.
Determine if an IRQ was handled and return the correct value.
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Kamenee Arumugam <kamenee.arumugam@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Relying on a trailing magic value is incorrect. There are instances where
this is not present as trailing magic value has a specific purpose which is
not partition validation. Instead use the header magic value which is
present in all variants of the platform configuration and is intended for
validation. This is also used in other locations in the driver.
Fixes: bc5214ee2922 (IB/hfi1: Handle missing magic values in config file)
Reviewed-by: Jakub Byczkowski <jakub.byczkowski@intel.com>
Signed-off-by: Jan Sokolowski <jan.sokolowski@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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QSFP reset enables AOC transmitters by default. They should be off
before moving to high power mode to complete the setup. There is no
need to reset the QSFP during LNI failure as it was reset at link down.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Jakub Byczkowski <jakub.byczkowski@intel.com>
Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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Offline.quietDuration was added in the 8051 firmware, and the driver
only turns off the AOC transmitters when offline.quiet is reached.
However, the AOC transmitters need to be turned off at the new state.
Therefore, turn off the AOC transmitters at any offline substates
including offline.quiet and offline.quietDuration, then recheck we
reached offline.quiet to support backwards compatibility.
Reviewed-by: Jakub Byczkowski <jakub.byczkowski@intel.com>
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Sebastian Sanchez <sebastian.sanchez@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
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The definition of map_sg was split during a recent addition to iommu_ops.
Put it back together.
Fixes: add02cfdc9bc ("iommu: Introduce Interface for IOMMU TLB Flushing")
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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pr_err() messages should end with a new-line to avoid other messages
being concatenated. So replace '/n' with '\n'.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Fixes: 45a01c42933b ('iommu/amd: Add function copy_dev_tables()')
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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The ARM short descriptor has already limited the physical address
to 32bit after the commit <76557391433c> ("iommu/io-pgtable: Sanitise
map/unmap addresses"). But in MediaTek 4GB mode, the physical address
is from 0x1_0000_0000 to 0x1_ffff_ffff. this will cause:
WARNING: CPU: 4 PID: 3900 at
xxx/drivers/iommu/io-pgtable-arm-v7s.c:482 arm_v7s_map+0x40/0xf8
Modules linked in:
CPU: 4 PID: 3900 Comm: weston Tainted: G S W 4.9.44 #1
Hardware name: MediaTek MT2712m1v1 board (DT)
task: ffffffc0eaa5b280 task.stack: ffffffc0e9858000
PC is at arm_v7s_map+0x40/0xf8
LR is at mtk_iommu_map+0x64/0x90
pc : [<ffffff80085b09e8>] lr : [<ffffff80085b29fc>] pstate: 000001c5
sp : ffffffc0e985b920
x29: ffffffc0e985b920 x28: 0000000127d00000
x27: 0000000000100000 x26: ffffff8008f9e000
x25: 0000000000000003 x24: 0000000000100000
x23: 0000000127d00000 x22: 00000000ff800000
x21: ffffffc0f7ec8ce0 x20: 0000000000000003
x19: 0000000000000003 x18: 0000000000000002
x17: 0000007f7e5d72c0 x16: ffffff80082b0f08
x15: 0000000000000001 x14: 000000000000003f
x13: 0000000000000000 x12: 0000000000000028
x11: 0088000000000000 x10: 0000000000000000
x9 : ffffff80092fa000 x8 : ffffffc0e9858000
x7 : ffffff80085b29d8 x6 : 0000000000000000
x5 : ffffff80085b09a8 x4 : 0000000000000003
x3 : 0000000000100000 x2 : 0000000127d00000
x1 : 00000000ff800000 x0 : 0000000000000001
...
Call trace:
[<ffffff80085b09e8>] arm_v7s_map+0x40/0xf8
[<ffffff80085b29fc>] mtk_iommu_map+0x64/0x90
[<ffffff80085ab5f8>] iommu_map+0x100/0x3a0
[<ffffff80085ab99c>] default_iommu_map_sg+0x104/0x168
[<ffffff80085aead8>] iommu_dma_alloc+0x238/0x3f8
[<ffffff8008098b30>] __iommu_alloc_attrs+0xa8/0x260
[<ffffff80085f364c>] mtk_drm_gem_create+0xac/0x180
[<ffffff80085f3894>] mtk_drm_gem_dumb_create+0x54/0xc8
[<ffffff80085d576c>] drm_mode_create_dumb_ioctl+0xa4/0xd8
[<ffffff80085cb2a0>] drm_ioctl+0x1c0/0x490
In order to satify this, Limit the physical address to 32bit.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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Fix the commit 81b3c2521844 ("iommu/io-pgtable: Introduce explicit
coherency"). If there is no IO_PGTABLE_QUIRK_NO_DMA, we should call
dma_sync_single_for_device for cache synchronization.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Fixes: 81b3c2521844 ('iommu/io-pgtable: Introduce explicit coherency')
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
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The commit 79d2c8bede2c93f943 ("pinctrl/amd: save pin registers over
suspend/resume") caused the following compilation errors:
drivers/pinctrl/pinctrl-amd.c: In function ‘amd_gpio_should_save’:
drivers/pinctrl/pinctrl-amd.c:741:8: error: ‘const struct pin_desc’ has no member named ‘mux_owner’
if (pd->mux_owner || pd->gpio_owner ||
^
drivers/pinctrl/pinctrl-amd.c:741:25: error: ‘const struct pin_desc’ has no member named ‘gpio_owner’
if (pd->mux_owner || pd->gpio_owner ||
We need to enable CONFIG_PINMUX for this driver as well.
Cc: stable@vger.kernel.org
Fixes: 79d2c8bede2c93f943 ("pinctrl/amd: save pin registers over suspend/resume")
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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Commit 1eeef2d7483a ("mtd: handle partitioning on devices with 0
erasesize") introduced a regression on heterogeneous erase region
devices. Alignment of the partition was tested against the master
eraseblock size which can be bigger than the slave one, thus leading
to some partitions being marked as read-only.
Update wr_alignment to match this slave erasesize after this erasesize
has been determined by picking the biggest erasesize of all the regions
embedded in the MTD partition.
Reported-by: Mathias Thore <Mathias.Thore@infinera.com>
Fixes: 1eeef2d7483a ("mtd: handle partitioning on devices with 0 erasesize")
Cc: <stable@vger.kernel.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Tested-by: Mathias Thore <Mathias.Thore@infinera.com>
Reviewed-by: Mathias Thore <Mathias.Thore@infinera.com>
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The simplify part: do not touch pi_desc.nv, we can set it when the
VCPU is first created. Likewise, pi_desc.sn is only handled by
vmx_vcpu_pi_load, do not touch it in __pi_post_block.
The fix part: do not check kvm_arch_has_assigned_device, instead
check the SN bit to figure out whether vmx_vcpu_pi_put ran before.
This matches what the previous patch did in pi_post_block.
Cc: Huangweidong <weidong.huang@huawei.com>
Cc: Gonglei <arei.gonglei@huawei.com>
Cc: wangxin <wangxinxin.wang@huawei.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Tested-by: Longpeng (Mike) <longpeng2@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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In some cases, for example involving hot-unplug of assigned
devices, pi_post_block can forget to remove the vCPU from the
blocked_vcpu_list. When this happens, the next call to
pi_pre_block corrupts the list.
Fix this in two ways. First, check vcpu->pre_pcpu in pi_pre_block
and WARN instead of adding the element twice in the list. Second,
always do the list removal in pi_post_block if vcpu->pre_pcpu is
set (not -1).
The new code keeps interrupts disabled for the whole duration of
pi_pre_block/pi_post_block. This is not strictly necessary, but
easier to follow. For the same reason, PI.ON is checked only
after the cmpxchg, and to handle it we just call the post-block
code. This removes duplication of the list removal code.
Cc: Huangweidong <weidong.huang@huawei.com>
Cc: Gonglei <arei.gonglei@huawei.com>
Cc: wangxin <wangxinxin.wang@huawei.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Tested-by: Longpeng (Mike) <longpeng2@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Simple code movement patch, preparing for the next one.
Cc: Huangweidong <weidong.huang@huawei.com>
Cc: Gonglei <arei.gonglei@huawei.com>
Cc: wangxin <wangxinxin.wang@huawei.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Tested-by: Longpeng (Mike) <longpeng2@huawei.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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When the kernel is entered at EL2 on an ARMv8.0 system, we construct
the EL1 pstate and make sure this uses the the EL1 stack pointer
(we perform an exception return to EL1h).
But if the kernel is either entered at EL1 or stays at EL2 (because
we're on a VHE-capable system), we fail to set SPsel, and use whatever
stack selection the higher exception level has choosen for us.
Let's not take any chance, and make sure that SPsel is set to one
before we decide the mode we're going to run in.
Cc: <stable@vger.kernel.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Yi Zhang reported the following failure on a 2-socket Haswell (E5-2603v3)
server (DELL PowerEdge 730xd):
EDAC sbridge: Some needed devices are missing
EDAC MC: Removed device 0 for sb_edac.c Haswell SrcID#0_Ha#0: DEV 0000:7f:12.0
EDAC MC: Removed device 1 for sb_edac.c Haswell SrcID#1_Ha#0: DEV 0000:ff:12.0
EDAC sbridge: Couldn't find mci handler
EDAC sbridge: Couldn't find mci handler
EDAC sbridge: Failed to register device with error -19.
The refactored sb_edac driver creates the IMC1 (the 2nd memory
controller) if any IMC1 device is present. In this case only
HA1_TA of IMC1 was present, but the driver expected to find
HA1/HA1_TM/HA1_TAD[0-3] devices too, leading to the above failure.
The document [1] says the 'E5-2603 v3' CPU has 4 memory channels max. Yi
Zhang inserted one DIMM per channel for each CPU, and did random error
address injection test with this patch:
4024 addresses fell in TOLM hole area
12715 addresses fell in CPU_SrcID#0_Ha#0_Chan#0_DIMM#0
12774 addresses fell in CPU_SrcID#0_Ha#0_Chan#1_DIMM#0
12798 addresses fell in CPU_SrcID#0_Ha#0_Chan#2_DIMM#0
12913 addresses fell in CPU_SrcID#0_Ha#0_Chan#3_DIMM#0
12674 addresses fell in CPU_SrcID#1_Ha#0_Chan#0_DIMM#0
12686 addresses fell in CPU_SrcID#1_Ha#0_Chan#1_DIMM#0
12882 addresses fell in CPU_SrcID#1_Ha#0_Chan#2_DIMM#0
12934 addresses fell in CPU_SrcID#1_Ha#0_Chan#3_DIMM#0
106400 addresses were injected totally.
The test result shows that all the 4 channels belong to IMC0 per CPU, so
the server really only has one IMC per CPU.
In the 1st page of chapter 2 in datasheet [2], it also says 'E5-2600 v3'
implements either one or two IMCs. For CPUs with one IMC, IMC1 is not
used and should be ignored.
Thus, do not create a second memory controller if the key HA1 is absent.
[1] http://ark.intel.com/products/83349/Intel-Xeon-Processor-E5-2603-v3-15M-Cache-1_60-GHz
[2] https://www.intel.com/content/dam/www/public/us/en/documents/datasheets/xeon-e5-v3-datasheet-vol-2.pdf
Reported-and-tested-by: Yi Zhang <yizhan@redhat.com>
Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-edac <linux-edac@vger.kernel.org>
Fixes: e2f747b1f42a ("EDAC, sb_edac: Assign EDAC memory controller per h/w controller")
Link: http://lkml.kernel.org/r/20170913104214.7325-1-qiuxu.zhuo@intel.com
[ Massage commit message. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
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New file in the "info" directory helps diagnose what went wrong
when using the /sys/fs/resctrl file system
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Vikas Shivappa <vikas.shivappa@intel.com>
Cc: Boris Petkov <bp@suse.de>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lkml.kernel.org/r/387e78e444582403c2454479e576caf5721a363f.1506382469.git.tony.luck@intel.com
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Mostly this is about running out of RMIDs or CLOSIDs. Other
errors are various internal errors.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Vikas Shivappa <vikas.shivappa@intel.com>
Cc: Boris Petkov <bp@suse.de>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lkml.kernel.org/r/027cf1ffb3a3695f2d54525813a1d644887353cf.1506382469.git.tony.luck@intel.com
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Can't add a cpu to a monitor group unless it belongs to parent
group. Can't delete cpus from the default group.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Vikas Shivappa <vikas.shivappa@intel.com>
Cc: Boris Petkov <bp@suse.de>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lkml.kernel.org/r/757a869a25e9fc1b7a2e9bc43e1159455c1964a0.1506382469.git.tony.luck@intel.com
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About the only tricky case is trying to move a task into a monitor
group that is a subdirectory of a different control group. But cover
the simple cases too.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Vikas Shivappa <vikas.shivappa@intel.com>
Cc: Boris Petkov <bp@suse.de>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lkml.kernel.org/r/f1841cce6a242aed37cb926dee8942727331bf78.1506382469.git.tony.luck@intel.com
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Save helpful descriptions of what went wrong when writing a
schemata file.
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Vikas Shivappa <vikas.shivappa@intel.com>
Cc: Boris Petkov <bp@suse.de>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lkml.kernel.org/r/9d6cef757dc88639c8ab47f1e7bc1b081a84bb88.1506382469.git.tony.luck@intel.com
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Commands are given to the resctrl file system by making/removing
directories, or by writing to files. When something goes wrong
the user is generally left wondering why they got:
bash: echo: write error: Invalid argument
Add a new file "last_cmd_status" to the "info" directory that
will give the user some better clues on what went wrong.
Provide functions to clear and update last_cmd_status which
check that we hold the rdtgroup_mutex.
[ tglx: Made last_cmd_status static and folded back the hunk from patch 3
which replaces the open coded access to last_cmd_status with the
accessor function ]
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Vikas Shivappa <vikas.shivappa@intel.com>
Cc: Boris Petkov <bp@suse.de>
Cc: Reinette Chatre <reinette.chatre@intel.com>
Link: https://lkml.kernel.org/r/edc4e0e9741eee89bba569f0021b1b2662fd9508.1506382469.git.tony.luck@intel.com
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Eric has reported that since commit d2faa415166b "quota: Do not acquire
dqio_sem for dquot overwrites in v2 format" test generic/232
occasionally fails due to quota information being incorrect. Indeed that
commit was too eager to remove dqio_sem completely from the path that
just overwrites quota structure with updated information. Although that
is innocent on its own, another process that inserts new quota structure
to the same block can perform read-modify-write cycle of that block thus
effectively discarding quota information update if they race in a wrong
way.
Fix the problem by acquiring dqio_sem for reading for overwrites of
quota structure. Note that it *is* possible to completely avoid taking
dqio_sem in the overwrite path however that will require modifying path
inserting / deleting quota structures to avoid RMW cycles of the full
block and for now it is not clear whether it is worth the hassle.
Fixes: d2faa415166b2883428efa92f451774ef44373ac
Reported-and-tested-by: Eric Whitney <enwlinux@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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x2apic_dead_cpu() cleans up the leftovers of a CPU which got unplugged, but
instead of clearing the dead cpu bit in the cluster mask it clears the
current (alive) cpu bit. Noticed because smp_processor_id() is called in
preemptible code and triggers a debug warning.
[ tglx: Rewrote changelog ]
Fixes: 023a611748fd ("x86/apic/x2apic: Simplify cluster management")
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lkml.kernel.org/r/20170926170845.13955-1-bp@alien8.de
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acpi_early_init() unmaps the temporary ACPI Table mappings which are used
in the early startup code and prepares for permanent table mappings.
Before the consolidation of the x86 APIC setup code the invocation of
acpi_early_init() happened before the interrupt remapping unit was
initialized. With the rework the remapping unit initialization moved in
front of acpi_early_init() which causes an ACPI warning when the ACPI root
tables get reallocated afterwards.
Invoke acpi_early_init() before late_time_init() which is before the access
to the DMAR tables happens.
Fixes: 935356cecda8 ("x86/apic: Initialize interrupt mode after timer init")
Reported-by: Xiaolong Ye <xiaolong.ye@intel.com>
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: linux-ia64@vger.kernel.org
Cc: bhe@redhat.com
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: Will Deacon <will.deacon@arm.com>
Cc: linux-acpi@vger.kernel.org
Cc: bp@alien8.de
Cc: Lv" <lv.zheng@intel.com>
Cc: yinghai@kernel.org
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lkml.kernel.org/r/1505294274-441-1-git-send-email-douly.fnst@cn.fujitsu.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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My Fujitsu-Siemens Lifebook S6120 doesn't have the FUJ02E3 device,
but it does have FUJ02B1. That means we do register the backlight
device (and it even seems to work), but the code will oops as soon
as we try to set the backlight brightness because it's trying to
call call_fext_func() with a NULL device. Let's just skip those
function calls when the FUJ02E3 device is not present.
Cc: Jonathan Woithe <jwoithe@just42.net>
Cc: Andy Shevchenko <andy@infradead.org>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: <stable@vger.kernel.org> # 4.13.x
Signed-off-by: Darren Hart (VMware) <dvhart@infradead.org>
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The sctp_for_each_transport() function takes an pointer to int. The
cb->args[] array holds longs so it's only using the high 32 bits. It
works on little endian system but will break on big endian 64 bit
machines.
Fixes: d25adbeb0cdb ("sctp: fix an use-after-free issue in sctp_sock_dump")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers
Kalle Valo says:
====================
wireless-drivers fixes for 4.14
Quite a lot of fixes this time. Most notable is the brcmfmac fix for a
CVE issue.
iwlwifi
* a couple of bugzilla bugs related to multicast handling
* two fixes for WoWLAN bugs that were causing queue hangs and
re-initialization problems
* two fixes for potential uninitialized variable use reported by Dan
Carpenter in relation to a recently introduced patch
* a fix for buffer reordering in the newly supported 9000 device
family
* fix a race when starting aggregation
* small fix for a recent patch to wake mac80211 queues
* send non-bufferable management frames in the generic queue so they
are not sent on queues that are under power-save
ath10k
* fix a PCI PM related gcc warning
brcmfmac
* CVE-2017-0786: add length check scan results from firmware
* respect passive scan requests from user space
qtnfmac
* fix race in tx path when using multiple interfaces
* cancel ongoing scan when removing the wireless interface
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
- sdhci-pci: Fix voltage switch for some Intel host controllers
- tmio: remove broken and noisy debug macro
* tag 'mmc-v4.14-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: sdhci-pci: Fix voltage switch for some Intel host controllers
mmc: tmio: remove broken and noisy debug macro
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The existing message
"Excess struct/union/enum/typedef member [...]"
made it sound like this would already be done, but the
code is never invoked for enums or typedefs (and really
can't be).
Add some code to the enum dumper to handle this there
instead.
While at it, also make the above message more accurate
by simply dumping the type that was passed in, and pass
the struct/union differentiation in.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Add the rest of the CRC library functions to kernel-api.
- try to clarify crc32() by adding '@' to a function parameter
- reorder kernel-api CRC functions to be less random
- add more CRC functions to kernel-api
- correct the function parameter names in several places
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Some urls is invalid. I find alternative urls.
Signed-off-by: stephen lu <lumotuwe@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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Devils in the details are found only when the high level design is
refined and gets more detailed, and the appropriate phrase to use to
describe this is "problems are revealed", not "problems are
reviewed".
Reviews may reveal these problems, though ;-)
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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There shouldn't be a blank line at the beginning, if there is no
optional in-body "From" line. There must be a blank line between
the body of the explanation and the beginning of the S-o-b lines.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
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