Linus Torvalds [Sun, 1 Oct 2017 19:34:42 +0000 (12:34 -0700)]
Merge branch 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull smp/hotplug fixes from Thomas Gleixner:
"This addresses the fallout of the new lockdep mechanism which covers
completions in the CPU hotplug code.
The lockdep splats are false positives, but there is no way to
annotate that reliably. The solution is to split the completions for
CPU up and down, which requires some reshuffling of the failure
rollback handling as well"
* 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
smp/hotplug: Hotplug state fail injection
smp/hotplug: Differentiate the AP completion between up and down
smp/hotplug: Differentiate the AP-work lockdep class between up and down
smp/hotplug: Callback vs state-machine consistency
smp/hotplug: Rewrite AP state machine core
smp/hotplug: Allow external multi-instance rollback
smp/hotplug: Add state diagram
Linus Torvalds [Sun, 1 Oct 2017 19:10:02 +0000 (12:10 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Thomas Gleixner:
"The scheduler pull request comes with the following updates:
- Prevent a divide by zero issue by validating the input value of
sysctl_sched_time_avg
- Make task state printing consistent all over the place and have
explicit state characters for IDLE and PARKED so they wont be
displayed as 'D' state which confuses tools"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/sysctl: Check user input value of sysctl_sched_time_avg
sched/debug: Add explicit TASK_PARKED printing
sched/debug: Ignore TASK_IDLE for SysRq-W
sched/debug: Add explicit TASK_IDLE printing
sched/tracing: Use common task-state helpers
sched/tracing: Fix trace_sched_switch task-state printing
sched/debug: Remove unused variable
sched/debug: Convert TASK_state to hex
sched/debug: Implement consistent task-state printing
Linus Torvalds [Sun, 1 Oct 2017 19:06:31 +0000 (12:06 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Thomas Gleixner:
- Prevent a division by zero in the perf aux buffer handling
- Sync kernel headers with perf tool headers
- Fix a build failure in the syscalltbl code
- Make the debug messages of perf report --call-graph work correctly
- Make sure that all required perf files are in the MANIFEST for
container builds
- Fix the atrr.exclude kernel handling so it respects the
perf_event_paranoid and the user permissions
- Make perf test on s390x work correctly
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/aux: Only update ->aux_wakeup in non-overwrite mode
perf test: Fix vmlinux failure on s390x part 2
perf test: Fix vmlinux failure on s390x
perf tools: Fix syscalltbl build failure
perf report: Fix debug messages with --call-graph option
perf evsel: Fix attr.exclude_kernel setting for default cycles:p
tools include: Sync kernel ABI headers with tooling headers
perf tools: Get all of tools/{arch,include}/ in the MANIFEST
Linus Torvalds [Sun, 1 Oct 2017 19:02:47 +0000 (12:02 -0700)]
Merge branch 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Thomas Gleixner:
"Two fixes for locking:
- Plug a hole the pi_stat->owner serialization which was changed
recently and failed to fixup two usage sites.
- Prevent reordering of the rwsem_has_spinner() check vs the
decrement of rwsem count in up_write() which causes a missed
wakeup"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rwsem-xadd: Fix missed wakeup due to reordering of load
futex: Fix pi_state->owner serialization
Linus Torvalds [Sun, 1 Oct 2017 19:00:56 +0000 (12:00 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
- Add a missing NULL pointer check in free_irq()
- Fix a memory leak/memory corruption in the generic irq chip
- Add missing rcu annotations for radix tree access
- Use ffs instead of fls when extracting data from a chip register in
the MIPS GIC irq driver
- Fix the unmasking of IPI interrupts in the MIPS GIC driver so they
end up at the target CPU and not at CPU0
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irq/generic-chip: Don't replace domain's name
irqdomain: Add __rcu annotations to radix tree accessors
irqchip/mips-gic: Use effective affinity to unmask
irqchip/mips-gic: Fix shifts to extract register fields
genirq: Check __free_irq() return value for NULL
Linus Torvalds [Sun, 1 Oct 2017 18:12:29 +0000 (11:12 -0700)]
Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fixes from Thomas Gleixner:
"Two small fixes for objtool:
- Support frame pointer setup via 'lea (%rsp), %rbp' which was not
yet supported and caused build warnings
- Disable unreacahble warnings for GCC4.4 and older to avoid false
positives caused by the compiler itself"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Support unoptimized frame pointer setup
objtool: Skip unreachable warnings for GCC 4.4 and older
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Eight mostly minor fixes for recently discovered issues in drivers"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: ILLEGAL REQUEST + ASC==27 => target failure
scsi: aacraid: Add a small delay after IOP reset
scsi: scsi_transport_fc: Also check for NOTPRESENT in fc_remote_port_add()
scsi: scsi_transport_fc: set scsi_target_id upon rescan
scsi: scsi_transport_iscsi: fix the issue that iscsi_if_rx doesn't parse nlmsg properly
scsi: aacraid: error: testing array offset 'bus' after use
scsi: lpfc: Don't return internal MBXERR_ERROR code from probe function
scsi: aacraid: Fix 2T+ drives on SmartIOC-2000
Merge tag 'platform-drivers-x86-v4.14-2' of git://git.infradead.org/linux-platform-drivers-x86
Pull x86 platform drivers fix from Darren Hart:
"Newly discovered species of fujitsu laptops break some assumptions
about ACPI device pairings.
fujitsu-laptop: Don't oops when FUJ02E3 is not present"
* tag 'platform-drivers-x86-v4.14-2' of git://git.infradead.org/linux-platform-drivers-x86:
platform/x86: fujitsu-laptop: Don't oops when FUJ02E3 is not presnt
Merge tag 'led_fixes-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds
Pull LED fixes from Jacek Anaszewski:
"Four fixes for the as3645a LED flash controller and one update to
MAINTAINERS"
* tag 'led_fixes-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
MAINTAINERS: Add entry for MediaTek PMIC LED driver
as3645a: Unregister indicator LED on device unbind
as3645a: Use integer numbers for parsing LEDs
dt: bindings: as3645a: Use LED number to refer to LEDs
as3645a: Use ams,input-max-microamp as documented in DT bindings
Merge branch 'for-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"We've collected a bunch of isolated fixes, for crashes, user-visible
behaviour or missing bits from other subsystem cleanups from the past.
The overall number is not small but I was not able to make it
significantly smaller. Most of the patches are supposed to go to
stable"
* 'for-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: log csums for all modified extents
Btrfs: fix unexpected result when dio reading corrupted blocks
btrfs: Report error on removing qgroup if del_qgroup_item fails
Btrfs: skip checksum when reading compressed data if some IO have failed
Btrfs: fix kernel oops while reading compressed data
Btrfs: use btrfs_op instead of bio_op in __btrfs_map_block
Btrfs: do not backup tree roots when fsync
btrfs: remove BTRFS_FS_QUOTA_DISABLING flag
btrfs: propagate error to btrfs_cmp_data_prepare caller
btrfs: prevent to set invalid default subvolid
Btrfs: send: fix error number for unknown inode types
btrfs: fix NULL pointer dereference from free_reloc_roots()
btrfs: finish ordered extent cleaning if no progress is found
btrfs: clear ordered flag on cleaning up ordered extents
Btrfs: fix incorrect {node,sector}size endianness from BTRFS_IOC_FS_INFO
Btrfs: do not reset bio->bi_ops while writing bio
Btrfs: use the new helper wbc_to_write_flags
Merge tag 'md/4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md
Pull MD fixes from Shaohua Li:
"A few fixes for MD. Mainly fix a problem introduced in 4.13, which we
retry bio for some code paths but not all in some situations"
* tag 'md/4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md:
md/raid5: cap worker count
dm-raid: fix a race condition in request handling
md: fix a race condition for flush request handling
md: separate request handling
Merge tag 'pci-v4.14-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
- fix CONFIG_PCI=n build error (introduced in v4.14-rc1) (Geert
Uytterhoeven)
- fix a race in sysfs driver_override store/show (Nicolai Stange)
* tag 'pci-v4.14-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
PCI: Fix race condition with driver_override
PCI: Add dummy pci_acs_enabled() for CONFIG_PCI=n build
Merge tag 'drm-fixes-for-v4.14-rc3' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Regular fixes pull, some amdkfd, amdgpu, etnaviv, sun4i, qxl, tegra
fixes.
I've got an outstanding pull for i915 but it wasn't on an rc2 base so
I wanted to ship these out first, I might get to it before rc3 or I
might not"
* tag 'drm-fixes-for-v4.14-rc3' of git://people.freedesktop.org/~airlied/linux:
drm/tegra: trace: Fix path to include
qxl: fix framebuffer unpinning
drm/sun4i: cec: Enable back CEC-pin framework
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/radeon: disable hard reset in hibernate for APUs
drm/amdgpu: revert tile table update for oland
etnaviv: fix gem object list corruption
etnaviv: fix submit error path
qxl: fix primary surface handling
drm/amdkfd: check for null dev to avoid a null pointer dereference
Merge tag 'iommu-fixes-v4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
- A comment fix for 'struct iommu_ops'
- Format string fixes for AMD IOMMU, unfortunatly I missed that during
review.
- Limit mediatek physical addresses to 32 bit for v7s to fix a warning
triggered in io-page-table code.
- Fix dma-sync in io-pgtable-arm-v7s code
* tag 'iommu-fixes-v4.14-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu: Fix comment for iommu_ops.map_sg
iommu/amd: pr_err() strings should end with newlines
iommu/mediatek: Limit the physical address in 32bit for v7s
iommu/io-pgtable-arm-v7s: Need dma-sync while there is no QUIRK_NO_DMA
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- SPsel register initialisation on reset as the architecture defines
its state as unknown
- Use READ_ONCE when dereferencing pmd_t pointers to avoid race
conditions in page_vma_mapped_walk() (or fast GUP) with concurrent
modifications of the page table
- Avoid invoking the mm fault handling code for kernel addresses (check
against TASK_SIZE) which would otherwise result in calling
might_sleep() in atomic context
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: fault: Route pte translation faults via do_translation_fault
arm64: mm: Use READ_ONCE when dereferencing pointer to pte table
arm64: Make sure SPsel is always set
Merge tag 'for-linus-4.14c-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- avoid a warning when compiling with clang
- consider read-only bits in xen-pciback when writing to a BAR
- fix a boot crash of pv-domains
* tag 'for-linus-4.14c-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/mmu: Call xen_cleanhighmap() with 4MB aligned for page tables mapping
xen-pciback: relax BAR sizing write value check
x86/xen: clean up clang build warning
Al Viro [Fri, 29 Sep 2017 17:43:15 +0000 (13:43 -0400)]
fix infoleak in waitid(2)
kernel_waitid() can return a PID, an error or 0. rusage is filled in the first
case and waitid(2) rusage should've been copied out exactly in that case, *not*
whenever kernel_waitid() has not returned an error. Compat variant shares that
braino; none of kernel_wait4() callers do, so the below ought to fix it.
Reported-and-tested-by: Alexander Potapenko <glider@google.com> Fixes: ce72a16fa705 ("wait4(2)/waitid(2): separate copying rusage to userland") Cc: stable@vger.kernel.org # v4.13 Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Merge branch 'fixes-v4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull keys fixes from James Morris:
"Notable here is a rewrite of big_key crypto by Jason Donenfeld to
address some issues in the original code.
From Jason's commit log:
"This started out as just replacing the use of crypto/rng with
get_random_bytes_wait, so that we wouldn't use bad randomness at
boot time. But, upon looking further, it appears that there were
even deeper underlying cryptographic problems, and that this seems
to have been committed with very little crypto review. So, I rewrote
the whole thing, trying to keep to the conventions introduced by the
previous author, to fix these cryptographic flaws."
There has been positive review of the new code by Eric Biggers and
Herbert Xu, and it passes basic testing via the keyutils test suite.
Eric also manually tested it.
Generally speaking, we likely need to improve the amount of crypto
review for kernel crypto users including keys (I'll post a note
separately to ksummit-discuss)"
* 'fixes-v4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
security/keys: rewrite all of big_key crypto
security/keys: properly zero out sensitive key material in big_key
KEYS: use kmemdup() in request_key_auth_new()
KEYS: restrict /proc/keys by credentials at open time
KEYS: reset parent each time before searching key_user_tree
KEYS: prevent KEYCTL_READ on negative key
KEYS: prevent creating a different user's keyrings
KEYS: fix writing past end of user-supplied buffer in keyring_read()
KEYS: fix key refcount leak in keyctl_read_key()
KEYS: fix key refcount leak in keyctl_assume_authority()
KEYS: don't revoke uninstantiated key in request_key_auth_new()
KEYS: fix cred refcount leak in request_key_auth_new()
Will Deacon [Fri, 29 Sep 2017 11:27:41 +0000 (12:27 +0100)]
arm64: fault: Route pte translation faults via do_translation_fault
We currently route pte translation faults via do_page_fault, which elides
the address check against TASK_SIZE before invoking the mm fault handling
code. However, this can cause issues with the path walking code in
conjunction with our word-at-a-time implementation because
load_unaligned_zeropad can end up faulting in kernel space if it reads
across a page boundary and runs into a page fault (e.g. by attempting to
read from a guard region).
In the case of such a fault, load_unaligned_zeropad has registered a
fixup to shift the valid data and pad with zeroes, however the abort is
reported as a level 3 translation fault and we dispatch it straight to
do_page_fault, despite it being a kernel address. This results in calling
a sleeping function from atomic context:
Will Deacon [Fri, 29 Sep 2017 10:29:55 +0000 (11:29 +0100)]
arm64: mm: Use READ_ONCE when dereferencing pointer to pte table
On kernels built with support for transparent huge pages, different CPUs
can access the PMD concurrently due to e.g. fast GUP or page_vma_mapped_walk
and they must take care to use READ_ONCE to avoid value tearing or caching
of stale values by the compiler. Unfortunately, these functions call into
our pgtable macros, which don't use READ_ONCE, and compiler caching has
been observed to cause the following crash during ext4 writeback:
This is because page_vma_mapped_walk loads the PMD twice before calling
pte_offset_map: the first time without READ_ONCE (where it gets all zeroes
due to a concurrent pmdp_invalidate) and the second time with READ_ONCE
(where it sees a valid table pointer due to a concurrent pmd_populate).
However, the compiler inlines everything and caches the first value in
a register, which is subsequently used in pte_offset_phys which returns
a junk pointer that is later dereferenced when attempting to access the
relevant pte.
This patch fixes the issue by using READ_ONCE in pte_offset_phys to ensure
that a stale value is not used. Whilst this is a point fix for a known
failure (and simple to backport), a full fix moving all of our page table
accessors over to {READ,WRITE}_ONCE and consistently using READ_ONCE in
page_vma_mapped_walk is in the works for a future kernel release.
Cc: Jon Masters <jcm@redhat.com> Cc: Timur Tabi <timur@codeaurora.org> Cc: <stable@vger.kernel.org> Fixes: f27176cfc363 ("mm: convert page_mkclean_one() to use page_vma_mapped_walk()") Tested-by: Richard Ruigrok <rruigrok@codeaurora.org> Signed-off-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This happened when the host hit a page fault, and delivered it as in an
async page fault, while the guest was in an RCU read-side critical
section. The guest then tries to reschedule in kvm_async_pf_task_wait(),
but rcu_preempt_note_context_switch() would treat the reschedule as a
sleep in RCU read-side critical section, which is not allowed (even in
preemptible RCU). Thus the WARN.
To cure this, make kvm_async_pf_task_wait() go to the halt path if the
PF happens in a RCU read-side critical section.
Reported-by: Sasha Levin <levinsasha928@gmail.com> Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: stable@vger.kernel.org Signed-off-by: Boqun Feng <boqun.feng@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
A nested #PF is triggered during L0 emulating instruction for L2. However, it
doesn't consider we should not break L1's vmlauch/vmresme. This patch fixes
it by queuing the #PF exception instead ,requesting an immediate VM exit from
L2 and keeping the exception for L1 pending for a subsequent nested VM exit.
This should actually work all the time, making vmx_inject_page_fault_nested
totally unnecessary. However, that's not working yet, so this patch can work
around the issue in the meanwhile.
Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
update_group_capacity()
update_cpu_capacity()
scale_rt_capacity()
{
...
total = sched_avg_period() + delta;
used = div_u64(avg, total);
...
}
To fix this issue, check user input value of sysctl_sched_time_avg, keep
it unchanged when hitting invalid input, and set the minimum limit of
sysctl_sched_time_avg to 1 ms.
Peter Zijlstra [Fri, 22 Sep 2017 16:37:28 +0000 (18:37 +0200)]
sched/debug: Add explicit TASK_PARKED printing
Currently TASK_PARKED is masqueraded as TASK_INTERRUPTIBLE, give it
its own print state because it will not in fact get woken by regular
wakeups and is a long-term state.
This requires moving TASK_PARKED into the TASK_REPORT mask, and since
that latter needs to be a contiguous bitmask, we need to shuffle the
bits around a bit.
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> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
Peter Zijlstra [Fri, 22 Sep 2017 16:30:40 +0000 (18:30 +0200)]
sched/debug: Add explicit TASK_IDLE printing
Markus reported that kthreads that idle using TASK_IDLE instead of
TASK_INTERRUPTIBLE are reported in as TASK_UNINTERRUPTIBLE and things
like htop mark those red.
This is undesirable, so add an explicit state for TASK_IDLE.
Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de> 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> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
locking/rwsem-xadd: Fix missed wakeup due to reordering of load
If a spinner is present, there is a chance that the load of
rwsem_has_spinner() in rwsem_wake() can be reordered with
respect to decrement of rwsem count in __up_write() leading
to wakeup being missed:
Reordering of atomic_long_sub_return_release() in __up_write()
and rwsem_has_spinner() in rwsem_wake() can cause missing of
wakeup in up_write() context. In spinning writer, sem->count
and local variable count is 0XFFFFFFFE00000001. It would result
in rwsem_try_write_lock() failing to acquire rwsem and spinning
writer going to sleep in rwsem_down_write_failed().
The smp_rmb() will make sure that the spinner state is
consulted after sem->count is updated in up_write context.
Convert trace_sched_switch to use the common task-state helpers and
fix the "X" and "Z" order, possibly they ended up in the wrong order
because TASK_REPORT has them in the wrong order too.
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> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
perf/aux: Only update ->aux_wakeup in non-overwrite mode
The following commit:
d9a50b0256 ("perf/aux: Ensure aux_wakeup represents most recent wakeup index")
changed the AUX wakeup position calculation to rounddown(), which causes
a division-by-zero in AUX overwrite mode (aka "snapshot mode").
The zero denominator results from the fact that perf record doesn't set
aux_watermark to anything, in which case the kernel will set it to half
the AUX buffer size, but only for non-overwrite mode. In the overwrite
mode aux_watermark stays zero.
The good news is that, AUX overwrite mode, wakeups don't happen and
related bookkeeping is not relevant, so we can simply forego the whole
wakeup updates.
Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.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> Cc: will.deacon@arm.com Link: http://lkml.kernel.org/r/20170906160811.16510-1-alexander.shishkin@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
Dave Airlie [Fri, 29 Sep 2017 07:11:04 +0000 (17:11 +1000)]
Merge tag 'drm-misc-fixes-2017-09-28-1' of git://anongit.freedesktop.org/git/drm-misc into drm-fixes
Driver Changes:
- qxl: fix primary surface and fb unpinning (Gerd)
- sun41: fix CEC_PIN config gate now that media has been merged (Hans)
- tegra: fix TRACE_INCLUDE_PATH (Thierry)
Cc: Thierry Reding <treding@nvidia.com> Cc: Hans Verkuil <hverkuil@xs4all.nl> Cc: Gerd Hoffmann <kraxel@redhat.com>
* tag 'drm-misc-fixes-2017-09-28-1' of git://anongit.freedesktop.org/git/drm-misc:
drm/tegra: trace: Fix path to include
qxl: fix framebuffer unpinning
drm/sun4i: cec: Enable back CEC-pin framework
qxl: fix primary surface handling
Merge tag 'pm-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix a deadlock in the operating performance points (OPP)
framework introduced during the 4.11 cycle, more issues with duplicate
device objects for cpufreq-dt and cpufreq documentation.
Specifics:
- Fix a deadlock in the operating performance points (OPP) framework
caused by a notifier callback taking a lock that's already held by
its caller (Viresh Kumar).
- Prevent the ti-cpufreq and cpufreq-dt-platdev drivers from
attempting to register conflicting device objects which triggers a
warning from sysfs (Suniel Mahesh).
- Drop a stale reference to a piece of intel_pstate documentation
that's not in the tree any more (Rafael Wysocki)"
* tag 'pm-4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: docs: Drop intel-pstate.txt from index.txt
cpufreq: dt: Fix sysfs duplicate filename creation for platform-device
PM / OPP: Call notifier without holding opp_table->lock
Merge tag 'xfs-4.14-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
- fix various problems with the copy-on-write extent maps getting freed
at the wrong time
- fix printk format specifier problems
- report zeroing operation outcomes instead of dropping them on the
floor
- fix some crashes when dio operations partially fail
- fix a race condition between unwritten extent conversion & dio read
- fix some incorrect tests in the inode log item processing
- correct the delayed allocation space reservations on rmap filesystems
- fix some problems checking for dax support
* tag 'xfs-4.14-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: revert "xfs: factor rmap btree size into the indlen calculations"
xfs: Capture state of the right inode in xfs_iflush_done
xfs: perag initialization should only touch m_ag_max_usable for AG 0
xfs: update i_size after unwritten conversion in dio completion
iomap_dio_rw: Allocate AIO completion queue before submitting dio
xfs: validate bdev support for DAX inode flag
xfs: remove redundant re-initialization of total_nr_pages
xfs: Output warning message when discard option was enabled even though the device does not support discard
xfs: report zeroed or not correctly in xfs_zero_range()
xfs: kill meaningless variable 'zero'
fs/xfs: Use %pS printk format for direct addresses
xfs: evict CoW fork extents when performing finsert/fcollapse
xfs: don't unconditionally clear the reflink flag on zero-block files
It turns out that the "legacy" users aren't so legacy at all, and that
turning off the legacy ioctl will break the current Qt bluetooth stack
for bluetooth LE devices that were released just a couple of months ago.
So it's simply not true that this was a legacy interface that hasn't
been needed and is only limited to old legacy BT devices. Because I
actually read Kconfig help messages, and actively try to turn off
features that I don't need, I turned the option off.
Then I spent _way_ too much time debugging BLE issues until I realized
that it wasn't the Qt and subsurface development that had broken one of
my dive computer BLE downloads, but simply my broken kernel config.
Maybe in a decade it will be true that this is a legacy interface. And
maybe with a better help-text and correct dependencies, this kind of
legacy removal might be acceptable. But as things are right now both
the commit message and the Kconfig help text were misleading, and the
Kconfig option had the wrong dependenencies.
There's no reason to keep that broken Kconfig option in the tree.
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma
Pull rdma fixes from Doug Ledford:
"Second -rc update for 4.14.
Both Mellanox and Intel had a series of -rc fixes that landed this
week. The Mellanox bunch is spread throughout the stack and not just
in their driver, where as the Intel bunch was mostly in the hfi1
driver. And, several of the fixes in the hfi1 driver were more than
just simple 5 line fixes. As a result, the hfi1 driver fixes has a
sizable LOC count.
Everything else is as one would expect in an RC cycle in terms of LOC
count. One item that might jump out and make you think "That's not an
rc item" is the fix that corrects a typo. But, that change fixes a
typo in a user visible API that was just added in this merge window,
so if we fix it now, we can fix it. If we don't, the typo is in the
API forever. Another that might not appear to be a fix at first glance
is the Simplify mlx5_ib_cont_pages patch, but the simplification
allows them to fix a bug in the existing function whenever the length
of an SGE exceeded page size. We also had to revert one patch from the
merge window that was wrong.
Summary:
- a few core fixes
- a few ipoib fixes
- a few mlx5 fixes
- a 7-patch hfi1 related series"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
IB/hfi1: Unsuccessful PCIe caps tuning should not fail driver load
IB/hfi1: On error, fix use after free during user context setup
Revert "IB/ipoib: Update broadcast object if PKey value was changed in index 0"
IB/hfi1: Return correct value in general interrupt handler
IB/hfi1: Check eeprom config partition validity
IB/hfi1: Only reset QSFP after link up and turn off AOC TX
IB/hfi1: Turn off AOC TX after offline substates
IB/mlx5: Fix NULL deference on mlx5_ib_update_xlt failure
IB/mlx5: Simplify mlx5_ib_cont_pages
IB/ipoib: Fix inconsistency with free_netdev and free_rdma_netdev
IB/ipoib: Fix sysfs Pkey create<->remove possible deadlock
IB: Correct MR length field to be 64-bit
IB/core: Fix qp_sec use after free access
IB/core: Fix typo in the name of the tag-matching cap struct
Merge tag 'seccomp-v4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull seccomp fix from Kees Cook:
"Fix refcounting bug in CRIU interface, noticed by Chris Salls (Oleg &
Tycho)"
* tag 'seccomp-v4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
seccomp: fix the usage of get/put_seccomp_filter() in seccomp_get_filter()
Thomas Richter [Fri, 15 Sep 2017 07:14:03 +0000 (09:14 +0200)]
perf test: Fix vmlinux failure on s390x
On s390x perf test 1 failed. It turned out that commit 4a084ecfc821
("perf report: Fix module symbol adjustment for s390x") was incorrect.
The previous implementation in dso__load_sym() is also suitable for
s390x.
xen/mmu: Call xen_cleanhighmap() with 4MB aligned for page tables mapping
When bootup a PVM guest with large memory(Ex.240GB), XEN provided initial
mapping overlaps with kernel module virtual space. When mapping in this space
is cleared by xen_cleanhighmap(), in certain case there could be an 2MB mapping
left. This is due to XEN initialize 4MB aligned mapping but xen_cleanhighmap()
finish at 2MB boundary.
When module loading is just on top of the 2MB space, got below warning:
Jan Beulich [Mon, 25 Sep 2017 08:01:01 +0000 (02:01 -0600)]
xen-pciback: relax BAR sizing write value check
Just like done in d2bd05d88d ("xen-pciback: return proper values during
BAR sizing") for the ROM BAR, ordinary ones also shouldn't compare the
written value directly against ~0, but consider the r/o bits at the
bottom (if any).
Signed-off-by: Jan Beulich <jbeulich@suse.com> Reviewed-by: Juergen Gross <jgross@suse.com> Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
When generic irq chips are allocated for an irq domain the domain name is
set to the irq chip name. That was done to have named domains before the
recent changes which enforce domain naming were done.
Since then the overwrite causes a memory leak when the domain name is
dynamically allocated and even worse it would cause the domain free code to
free the wrong name pointer, which might point to a constant.
seccomp: fix the usage of get/put_seccomp_filter() in seccomp_get_filter()
As Chris explains, get_seccomp_filter() and put_seccomp_filter() can end
up using different filters. Once we drop ->siglock it is possible for
task->seccomp.filter to have been replaced by SECCOMP_FILTER_FLAG_TSYNC.
Fixes: f8e529ed941b ("seccomp, ptrace: add support for dumping seccomp filters") Reported-by: Chris Salls <chrissalls5@gmail.com> Cc: stable@vger.kernel.org # needs s/refcount_/atomic_/ for v4.12 and earlier Signed-off-by: Oleg Nesterov <oleg@redhat.com>
[tycho: add __get_seccomp_filter vs. open coding refcount_inc()] Signed-off-by: Tycho Andersen <tycho@docker.com>
[kees: tweak commit log] Signed-off-by: Kees Cook <keescook@chromium.org>
crypto/jitterentropy.o: warning: objtool: jent_fold_time()+0x3b: call without frame pointer save/setup
crypto/jitterentropy.o: warning: objtool: jent_stuck()+0x1d: call without frame pointer save/setup
crypto/jitterentropy.o: warning: objtool: jent_unbiased_bit()+0x15: call without frame pointer save/setup
crypto/jitterentropy.o: warning: objtool: jent_read_entropy()+0x32: call without frame pointer save/setup
crypto/jitterentropy.o: warning: objtool: jent_entropy_collector_free()+0x19: call without frame pointer save/setup
and
arch/x86/events/core.o: warning: objtool: collect_events uses BP as a scratch register
arch/x86/events/core.o: warning: objtool: events_ht_sysfs_show()+0x22: call without frame pointer save/setup
With certain rare configurations, GCC sometimes sets up the frame
pointer with:
lea (%rsp),%rbp
instead of:
mov %rsp,%rbp
The instructions are equivalent, so treat the former like the latter.
Shaohua Li [Thu, 21 Sep 2017 17:23:35 +0000 (10:23 -0700)]
md: separate request handling
With commit cc27b0c78c79, pers->make_request could bail out without handling
the bio. If that happens, we should retry. The commit fixes md_make_request
but not other call sites. Separate the request handling part, so other call
sites can use it.
Reported-by: Nate Dailey <nate.dailey@stratus.com>
Fix: cc27b0c78c79(md: fix deadlock between mddev_suspend() and md_write_start()) Cc: stable@vger.kernel.org Reviewed-by: NeilBrown <neilb@suse.com> Signed-off-by: Shaohua Li <shli@fb.com>
Martin Wilck [Wed, 27 Sep 2017 12:44:19 +0000 (14:44 +0200)]
scsi: ILLEGAL REQUEST + ASC==27 => target failure
ASC 0x27 is "WRITE PROTECTED". This error code is returned e.g. by
Fujitsu ETERNUS systems under certain conditions for WRITE SAME 16
commands with UNMAP bit set. It should not be treated as a path
error. In general, it makes sense to assume that being write protected
is a target rather than a path property.
Signed-off-by: Martin Wilck <mwilck@suse.com> Acked-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Commit 0e9973ed3382 ("scsi: aacraid: Add periodic checks to see IOP reset
status") changed the way driver checks if a reset succeeded. Now, after an
IOP reset, aacraid immediately start polling a register to verify the reset
is complete.
This behavior cause regressions on the reset path in PowerPC (at least).
Since the delay after the IOP reset was removed by the aforementioned patch,
the fact driver just starts to read a register instantly after the reset
was issued (by writing in another register) "corrupts" the reset procedure,
which ends up failing all the time.
The issue highly impacted kdump on PowerPC, since on kdump path we
proactively issue a reset in adapter (through the reset_devices kernel
parameter).
This patch (re-)adds a delay right after IOP reset is issued. Empirically
we measured that 3 seconds is enough, but for safety reasons we delay
for 5s (and since it was 30s before, 5s is still a small amount).
For reference, without this patch we observe the following messages
on kdump kernel boot process:
Fixes: 0e9973ed3382 ("scsi: aacraid: Add periodic checks to see IOP reset status") Cc: stable@vger.kernel.org # v4.13+ Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com> Acked-by: Dave Carroll <david.carroll@microsemi.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
cpufreq: docs: Drop intel-pstate.txt from index.txt
Commit 33fc30b47098 (cpufreq: intel_pstate: Document the current
behavior and user interface) dropped the intel-pstate.txt file
from Documentation/cpu-freq/, but it did not update the index.txt
file in there accordingly, so do that now.
Fixes: 33fc30b47098 (cpufreq: intel_pstate: Document the current behavior and user interface) Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tyler Baicar [Mon, 28 Aug 2017 16:53:41 +0000 (10:53 -0600)]
ACPI / APEI: clear error status before acknowledging the error
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>
Dave Airlie [Wed, 27 Sep 2017 19:49:38 +0000 (05:49 +1000)]
Merge branch 'drm-fixes-4.14' of git://people.freedesktop.org/~agd5f/linux 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
Dave Airlie [Wed, 27 Sep 2017 19:47:39 +0000 (05:47 +1000)]
Merge tag 'drm-amdkfd-fixes-2017-09-24' of 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
Merge tag 'linux-kselftest-4.14-rc3-fixes' of 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
...
Richard Genoud [Wed, 27 Sep 2017 12:49:17 +0000 (14:49 +0200)]
mtd: nand: atmel: fix buffer overflow in atmel_pmecc_user
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>
Merge branch 'x86-fpu-for-linus' of 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()
...
IB/hfi1: Unsuccessful PCIe caps tuning should not fail driver load
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>
Michael J. Ruhl [Tue, 26 Sep 2017 13:06:28 +0000 (06:06 -0700)]
IB/hfi1: On error, fix use after free during user context setup
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>
Alex Estrin [Tue, 26 Sep 2017 13:06:22 +0000 (06:06 -0700)]
Revert "IB/ipoib: Update broadcast object if PKey value was changed in index 0"
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>
Jan Sokolowski [Tue, 26 Sep 2017 13:06:09 +0000 (06:06 -0700)]
IB/hfi1: Check eeprom config partition validity
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>
IB/hfi1: Only reset QSFP after link up and turn off AOC TX
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>
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>
iommu/mediatek: Limit the physical address in 32bit for v7s
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:
iommu/io-pgtable-arm-v7s: Need dma-sync while there is no QUIRK_NO_DMA
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.
Boris Brezillon [Mon, 25 Sep 2017 08:19:57 +0000 (10:19 +0200)]
mtd: Fix partition alignment check on multi-erasesize devices
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>
Paolo Bonzini [Tue, 6 Jun 2017 10:57:06 +0000 (12:57 +0200)]
KVM: VMX: simplify and fix vmx_vcpu_pi_load
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.
Paolo Bonzini [Tue, 6 Jun 2017 10:57:05 +0000 (12:57 +0200)]
KVM: VMX: avoid double list add with VT-d posted interrupts
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.
Marc Zyngier [Tue, 26 Sep 2017 14:57:16 +0000 (15:57 +0100)]
arm64: Make sure SPsel is always set
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>
Jan Kara [Tue, 26 Sep 2017 08:36:05 +0000 (10:36 +0200)]
quota: Fix quota corruption with generic/232 test
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>
Ville Syrjälä [Mon, 18 Sep 2017 20:00:59 +0000 (23:00 +0300)]
platform/x86: fujitsu-laptop: Don't oops when FUJ02E3 is not presnt
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>
Merge tag 'mmc-v4.14-rc1' of 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
vfs: Return -ENXIO for negative SEEK_HOLE / SEEK_DATA offsets
In generic_file_llseek_size, return -ENXIO for negative offsets as well
as offsets beyond EOF. This affects filesystems which don't implement
SEEK_HOLE / SEEK_DATA internally, possibly because they don't support
holes.
Fixes xfstest generic/448.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Darrick J. Wong [Mon, 18 Sep 2017 16:41:17 +0000 (09:41 -0700)]
xfs: revert "xfs: factor rmap btree size into the indlen calculations"
In commit fd26a88093ba we added a worst case estimate for rmapbt blocks
needed to satisfy the block mapping request. Since then, we added the
ability to reserve enough space in each AG such that we should never run
out of blocks to grow the rmapbt, which makes this calculation
unnecessary. Revert the commit because it makes the extra delalloc
indlen accounting unnecessary and incorrect.
Reported-by: Eryu Guan <eguan@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
In the loop scanning other inodes being completed, it should check the
current item for the XFS_LI_FAILED, and not the initial one.
The state of the initial inode is checked after the loop ends
Kudos to Eric for catching this.
Signed-off-by: Carlos Maiolino <cmaiolino@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Darrick J. Wong [Mon, 18 Sep 2017 16:42:09 +0000 (09:42 -0700)]
xfs: perag initialization should only touch m_ag_max_usable for AG 0
We call __xfs_ag_resv_init to make a per-AG reservation for each AG.
This makes the reservation per-AG, not per-filesystem. Therefore, it
is incorrect to adjust m_ag_max_usable for each AG. Adjust it only
when we're reserving AG 0's blocks so that we only do it once per fs.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Brian Foster <bfoster@redhat.com>
xfs: update i_size after unwritten conversion in dio completion
Since commit d531d91d6990 ("xfs: always use unwritten extents for
direct I/O writes"), we start allocating unwritten extents for all
direct writes to allow appending aio in XFS.
But for dio writes that could extend file size we update the in-core
inode size first, then convert the unwritten extents to real
allocations at dio completion time in xfs_dio_write_end_io(). Thus a
racing direct read could see the new i_size and find the unwritten
extents first and read zeros instead of actual data, if the direct
writer also takes a shared iolock.
Fix it by updating the in-core inode size after the unwritten extent
conversion. To do this, introduce a new boolean argument to
xfs_iomap_write_unwritten() to tell if we want to update in-core
i_size or not.
Suggested-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Brian Foster <bfoster@redhat.com> Signed-off-by: Eryu Guan <eguan@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
This occurs due to the following sequence of events,
1. Allocate dio for Direct I/O write.
2. Invoke iomap_apply() until iov_iter_count() bytes have been submitted.
- Assume that we have submitted atleast one bio. Hence iomap_dio->ref value
will be >= 2.
- If during the second iteration, iomap_apply() ends up returning -ENOSPC, we would
break out of the loop and since the 'ret' value is a negative number we
end up not allocating memory for super_block->s_dio_done_wq.
3. Meanwhile, iomap_dio_bio_end_io() is invoked for bios that have been
submitted and here the code ends up dereferencing the NULL pointer stored
at super_block->s_dio_done_wq.
This commit fixes the bug by allocating memory for
super_block->s_dio_done_wq before iomap_apply() is invoked.
Reported-by: Eryu Guan <eguan@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Tested-by: Eryu Guan <eguan@redhat.com> Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Ross Zwisler [Mon, 18 Sep 2017 21:46:03 +0000 (14:46 -0700)]
xfs: validate bdev support for DAX inode flag
Currently only the blocksize is checked, but we should really be calling
bdev_dax_supported() which also tests to make sure we can get a
struct dax_device and that the dax_direct_access() path is working.
This is the same check that we do for the "-o dax" mount option in
xfs_fs_fill_super().
This does not fix the race issues that caused the XFS DAX inode option to
be disabled, so that option will still be disabled. If/when we re-enable
it, though, I think we will want this issue to have been fixed. I also do
think that we want to fix this in stable kernels.
Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com> CC: stable@vger.kernel.org Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Josef Bacik [Tue, 29 Aug 2017 14:11:39 +0000 (10:11 -0400)]
btrfs: log csums for all modified extents
Amir reported a bug discovered by his cleaned up version of my
dm-log-writes xfstests where we were missing csums at certain replay
points. This is because fsx was doing an msync(), which essentially
fsync()'s a specific range of a file. We will log all modified extents,
but only search for the checksums in the range we are being asked to
sync. We cannot simply log the extents in the range we're being asked
because we are logging the inode item as it is currently, which if it
has had a i_size update before the msync means we will miss extents when
replaying. We could possibly get around this by marking the inode with
the transaction that extended the i_size to see if we have this case,
but this would be racy and we'd have to lock the whole range of the
inode to make sure we didn't have an ordered extent outside of our range
that was in the middle of completing.
Fix this simply by keeping track of the modified extents range and
logging the csums for the entire range of extents that we are logging.
This makes the xfstest pass.
Reported-by: Amir Goldstein <amir73il@gmail.com> Signed-off-by: Josef Bacik <jbacik@fb.com> Signed-off-by: David Sterba <dsterba@suse.com>
Liu Bo [Fri, 15 Sep 2017 21:06:51 +0000 (15:06 -0600)]
Btrfs: fix unexpected result when dio reading corrupted blocks
commit 4246a0b63bd8 ("block: add a bi_error field to struct bio")
changed the logic of how dio read endio reports errors.
For single stripe dio read, %bio->bi_status reflects the error before
verifying checksum, and now we're updating it when data block matches
with its checksum, while in the mismatching case, %bio->bi_status is
not updated to relfect that.
When some blocks in a file have been corrupted on disk, reading such a
file ends up with
1) checksum errors are reported in kernel log
2) read(2) returns successfully with some content being 0x01.
In order to fix it, we need to report its checksum mismatch error to
the upper layer (dio layer in this case) as well.
Fixes: 4246a0b63bd8 ("block: add a bi_error field to struct bio") Signed-off-by: Liu Bo <bo.li.liu@oracle.com> Reported-by: Goffredo Baroncelli <kreijack@inwind.it> Tested-by: Goffredo Baroncelli <kreijack@inwind.it> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
btrfs: Report error on removing qgroup if del_qgroup_item fails
Previously, we were calling del_qgroup_item, and ignoring the return code
resulting in a potential to have divergent in-memory state without an
error. Perhaps, it makes sense to handle this error code, and put the
filesystem into a read only, or similar state.
This patch only adds reporting of the error if the error is fatal,
(any error other than qgroup not found).
projects / mirror_ubuntu-kernels.git / log