- 21 Aug, 2016 2 commits
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Brian Norris authored
When using CONFIG_DEBUG_ATOMIC_SLEEP, the scheduler nicely points out that we're calling sleeping primitives within the wait_event loop, which means we might clobber the task state: [ 10.831289] do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffc00026b610>] [ 10.845531] ------------[ cut here ]------------ [ 10.850161] WARNING: at kernel/sched/core.c:7630 ... [ 12.164333] ---[ end trace 45409966a9a76438 ]--- [ 12.168942] Call trace: [ 12.171391] [<ffffffc00024ed44>] __might_sleep+0x64/0x90 [ 12.176699] [<ffffffc000954774>] mutex_lock_nested+0x50/0x3fc [ 12.182440] [<ffffffc0007b9424>] iio_kfifo_buf_data_available+0x28/0x4c [ 12.189043] [<ffffffc0007b76ac>] iio_buffer_ready+0x60/0xe0 [ 12.194608] [<ffffffc0007b7834>] iio_buffer_read_first_n_outer+0x108/0x1a8 [ 12.201474] [<ffffffc000370d48>] __vfs_read+0x58/0x114 [ 12.206606] [<ffffffc000371740>] vfs_read+0x94/0x118 [ 12.211564] [<ffffffc0003720f8>] SyS_read+0x64/0xb4 [ 12.216436] [<ffffffc000203cb4>] el0_svc_naked+0x24/0x28 To avoid this, we should (a la https://lwn.net/Articles/628628/) use the wait_woken() function, which avoids the nested sleeping while still handling races between waiting / wake-events. Signed-off-by: Brian Norris <briannorris@chromium.org> Reviewed-by: Lars-Peter Clausen <lars@metafoo.de> Cc: <Stable@vger.kernel.org> # 3.19+ for introduction of wake_woken Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Giorgio Dal Molin authored
The call to i2c_get_clientdata(client) returns a struct iio_dev*, not the needed struct ads1015_data*. We need here an intermediate step as in the function: void ads1015_get_channels_config(struct i2c_client *client). Signed-off-by: Giorgio Dal Molin <giorgio.nicole@arcor.de> Fixes: ecc24e72 ("iio: adc: Add TI ADS1015 ADC driver support") Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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- 15 Aug, 2016 16 commits
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Anders Darander authored
The driver always assumes that an input device has been created when reading channel 3. This causes a kernel panic when dereferencing st->ts_input. The change was introduced in commit 84882b06 ("iio: adc: at91_adc: Add support for touchscreens without TSMR"). Earlier versions only entered that part of the if-else statement if only the following flags are set: AT91_ADC_IER_XRDY | AT91_ADC_IER_YRDY | AT91_ADC_IER_PRDY Signed-off-by: Anders Darander <anders@chargestorm.se> Acked-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Alison Schofield authored
Uninitialized channel pointer causes segmentation fault when we call free(channel) during cleanup() with no channels initialized. This happens when you exit early for usage errors. Initialize the pointer to NULL when it is declared. Signed-off-by: Alison Schofield <amsfield22@gmail.com> Cc: Daniel Baluta <daniel.baluta@gmail.com> Tested-by: Gregor Boirie <gregor.boirie@parrot.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Alison Schofield authored
Replace the i2c_smbus_read_byte commmands used to retrieve the sensor data with an i2c_master_recv command. The smbus read byte method fails because the device does not expect a stop condition after sending the first byte. When we issue the second read, we are getting the first byte again. Net effect is that of the 14 bits used for the measurement, the 8 most significant bits are correct, the lower 6 are not. None of the smbus read protocols follow the pattern this device requires (S Addr Rd [A] Data [A] Data NA P), hence the switch to an i2c receive transaction. Applicable from original introduction of this driver, but will require backporting due to churn in the code. Signed-off-by: Alison Schofield <amsfield22@gmail.com> Cc: Daniel Baluta <daniel.baluta@gmail.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Linus Walleij authored
In commit 3d838118 ("iio: pressure: bmp280: add power management") For some reason the code in the runtime suspend/resume hooks got wrong (I suspect in the ambition to cut down boilerplate) and it seems it was tested without CONFIG_PM and crashes like so for me: Unable to handle kernel NULL pointer dereference at virtual address 0000000c pgd = c0204000 [0000000c] *pgd=00000000 Internal error: Oops: 5 [#1] PREEMPT SMP ARM Modules linked in: CPU: 1 PID: 89 Comm: kworker/1:2 Not tainted 4.7.0-03348-g90dc3680458a-dirty #99 Hardware name: Generic DT based system Workqueue: pm pm_runtime_work task: df3c6300 ti: dec8a000 task.ti: dec8a000 PC is at regulator_disable+0x0/0x6c LR is at bmp280_runtime_suspend+0x3c/0xa4 Dereferencing the BMP280 state container properly fixes the problem, sorry for screwing up. Fixes: 3d838118 ("iio: pressure: bmp280: add power management") Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Alison Schofield authored
Select IIO_BUFFER and IIO_TRIGGERED_BUFFER to compile. Remove IIO_TRIGGER if present since IIO_BUFFER selects it. Signed-off-by: Alison Schofield <amsfield22@gmail.com> Cc: Daniel Baluta <daniel.baluta@gmail.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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William Breathitt Gray authored
The devm_iio_device_register function should not be used if custom operations must be performed in the remove callback. This patch replaces the dem_iio_device_register call with a iio_device_register call and respective iio_device_unregister call in the remove callback. Fixes: 765550e4 ("iio: stx104: Add GPIO support for the Apex Embedded Systems STX104") Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Alison Schofield authored
Use the iio_pollfunc_store_time parameter during triggered buffer set-up to get valid timestamps. Signed-off-by: Alison Schofield <amsfield22@gmail.com> Cc: Daniel Baluta <daniel.baluta@gmail.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Alison Schofield authored
Use the iio_pollfunc_store_time parameter during triggered buffer set-up to get valid timestamps. Signed-off-by: Alison Schofield <amsfield22@gmail.com> Cc: Daniel Baluta <daniel.baluta@gmail.com> Reviewed-By: Tiberiu Breana <tiberiu.a.breana@intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Alison Schofield authored
Use the iio_pollfunc_store_time parameter during triggered buffer set-up to get valid timestamps. Signed-off-by: Alison Schofield <amsfield22@gmail.com> Cc: Daniel Baluta <daniel.baluta@gmail.com> Reviewed-By: Tiberiu Breana <tiberiu.a.breana@intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Lars-Peter Clausen authored
The data buffer for captured mode for the ad799x driver is allocated in the update_scan_mode() callback. This callback is not set in the iio_info struct for the ad7791/ad7995/ad7999, which means that the data buffer is not allocated when a captured transfer is started. As a result the driver crashes when the first sample is received. To fix this properly set the update_scan_mode() callback. Fixes: d8dca330 ("staging:iio:ad799x: Preallocate sample buffer") Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Lars-Peter Clausen authored
Use the IS_ENABLED() helper macro to ensure that the configfs group is initialized either when configfs is built-in or when configfs is built as a module. Otherwise software trigger creation will result in undefined behaviour when configfs is built as a mdoule since the configfs group for the trigger is not properly initialized. Fixes: b662f809 ("iio: core: Introduce IIO software triggers") Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Daniel Baluta <daniel.baluta@intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Phil Turnbull authored
The 'break' statement after calling ad5933_cmd only breaks out of the 'for' loop, which then unconditionally sets the return value to -EINVAL. Move the initialisation of 'ret' so we return the correct value. Signed-off-by: Phil Turnbull <phil.turnbull@oracle.com> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Wei Yongjun authored
PTR_ERR should access the value just tested by IS_ERR, otherwise the wrong error code will be returned. Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Jonathan Cameron <jic23@kernel.org>
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linuxLinus Torvalds authored
Pull thermal updates from Zhang Rui: - Fix a race condition when updating cooling device, which may lead to a situation where a thermal governor never updates the cooling device. From Michele Di Giorgio. - Fix a zero division error when disabling the forced idle injection from the intel powerclamp. From Petr Mladek. - Add suspend/resume callback for intel_pch_thermal thermal driver. From Srinivas Pandruvada. - Another two fixes for clocking cooling driver and hwmon sysfs I/F. From Michele Di Giorgio and Kuninori Morimoto. [ Hmm. That suspend/resume callback for intel_pch_thermal doesn't look like a fix, but I'm letting it slide.. - Linus ] * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: thermal: clock_cooling: Fix missing mutex_init() thermal: hwmon: EXPORT_SYMBOL_GPL for thermal hwmon sysfs thermal: fix race condition when updating cooling device thermal/powerclamp: Prevent division by zero when counting interval thermal: intel_pch_thermal: Add suspend/resume callback
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git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommuLinus Torvalds authored
Pull m68knommu fix from Greg Ungerer: "This contains only a single fix for a register corruption problem on certain types of m68k flat format binaries" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu: m68knommu: fix user a5 register being overwritten
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- 14 Aug, 2016 2 commits
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Linus Torvalds authored
Merge tag 'fixes-for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging Pull h8300 and unicore32 architecture fixes from Guenter Roeck: "Two patches to fix h8300 and unicore32 builds. unicore32 builds have been broken since v4.6. The fix has been available in -next since March of this year. h8300 builds have been broken since the last commit window. The fix has been available in -next since June of this year" * tag 'fixes-for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: h8300: Add missing include file to asm/io.h unicore32: mm: Add missing parameter to arch_vma_access_permitted
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git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxLinus Torvalds authored
Pull arm64 fixes from Catalin Marinas: - support for nr_cpus= command line argument (maxcpus was previously changed to allow secondary CPUs to be hot-plugged) - ARM PMU interrupt handling fix - fix potential TLB conflict in the hibernate code - improved handling of EL1 instruction aborts (better error reporting) - removal of useless jprobes code for stack saving/restoring - defconfig updates * tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: arm64: defconfig: enable CONFIG_LOCALVERSION_AUTO arm64: defconfig: add options for virtualization and containers arm64: hibernate: handle allocation failures arm64: hibernate: avoid potential TLB conflict arm64: Handle el1 synchronous instruction aborts cleanly arm64: Remove stack duplicating code from jprobes drivers/perf: arm-pmu: Fix handling of SPI lacking "interrupt-affinity" property drivers/perf: arm-pmu: convert arm_pmu_mutex to spinlock arm64: Support hard limit of cpu count by nr_cpus
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- 13 Aug, 2016 4 commits
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull KVM fixes from Radim Krčmář: "KVM: - lock kvm_device list to prevent corruption on device creation. PPC: - split debugfs initialization from creation of the xics device to unlock the newly taken kvm lock earlier. s390: - prevent userspace from triggering two WARN_ON_ONCE. MIPS: - fix several issues in the management of TLB faults (Cc: stable)" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: MIPS: KVM: Propagate kseg0/mapped tlb fault errors MIPS: KVM: Fix gfn range check in kseg0 tlb faults MIPS: KVM: Add missing gfn range check MIPS: KVM: Fix mapped fault broken commpage handling KVM: Protect device ops->create and list_add with kvm->lock KVM: PPC: Move xics_debugfs_init out of create KVM: s390: reset KVM_REQ_MMU_RELOAD if mapping the prefix failed KVM: s390: set the prefix initially properly
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git://git.kernel.dk/linux-blockLinus Torvalds authored
Pull block fixes from Jens Axboe: - an NVMe fix from Gabriel, fixing a suspend/resume issue on some setups - addition of a few missing entries in the block queue sysfs documentation, from Joe - a fix for a sparse shadow warning for the bvec iterator, from Johannes - a writeback deadlock involving raid issuing barriers, and not flushing the plug when we wakeup the flusher threads. From Konstantin - a set of patches for the NVMe target/loop/rdma code, from Roland and Sagi * 'for-linus' of git://git.kernel.dk/linux-block: bvec: avoid variable shadowing warning doc: update block/queue-sysfs.txt entries nvme: Suspend all queues before deletion mm, writeback: flush plugged IO in wakeup_flusher_threads() nvme-rdma: Remove unused includes nvme-rdma: start async event handler after reconnecting to a controller nvmet: Fix controller serial number inconsistency nvmet-rdma: Don't use the inline buffer in order to avoid allocation for small reads nvmet-rdma: Correctly handle RDMA device hot removal nvme-rdma: Make sure to shutdown the controller if we can nvme-loop: Remove duplicate call to nvme_remove_namespaces nvme-rdma: Free the I/O tags when we delete the controller nvme-rdma: Remove duplicate call to nvme_remove_namespaces nvme-rdma: Fix device removal handling nvme-rdma: Queue ns scanning after a sucessful reconnection nvme-rdma: Don't leak uninitialized memory in connect request private data
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Guenter Roeck authored
h8300 builds fail with arch/h8300/include/asm/io.h:9:15: error: unknown type name ‘u8’ arch/h8300/include/asm/io.h:15:15: error: unknown type name ‘u16’ arch/h8300/include/asm/io.h:21:15: error: unknown type name ‘u32’ and many related errors. Fixes: 23c82d41bdf4 ("kexec-allow-architectures-to-override-boot-mapping-fix") Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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Guenter Roeck authored
unicore32 fails to compile with the following errors. mm/memory.c: In function ‘__handle_mm_fault’: mm/memory.c:3381: error: too many arguments to function ‘arch_vma_access_permitted’ mm/gup.c: In function ‘check_vma_flags’: mm/gup.c:456: error: too many arguments to function ‘arch_vma_access_permitted’ mm/gup.c: In function ‘vma_permits_fault’: mm/gup.c:640: error: too many arguments to function ‘arch_vma_access_permitted’ Fixes: d61172b4 ("mm/core, x86/mm/pkeys: Differentiate instruction fetches") Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@kernel.org> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
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- 12 Aug, 2016 16 commits
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git://github.com/awilliam/linux-vfioLinus Torvalds authored
Pull VFIO fix from Alex Williamson: "Fix oops when dereferencing empty data (Alex Williamson)" * tag 'vfio-v4.8-rc2' of git://github.com/awilliam/linux-vfio: vfio/pci: Fix NULL pointer oops in error interrupt setup handling
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git://linux-nfs.org/~bfields/linuxLinus Torvalds authored
Pull nfsd fixes from Bruce Fields: "Fixes for the dentry refcounting leak I introduced in 4.8-rc1, and for races in the LOCK code which appear to go back to the big nfsd state lock removal from 3.17" * tag 'nfsd-4.8-1' of git://linux-nfs.org/~bfields/linux: nfsd: don't return an unhashed lock stateid after taking mutex nfsd: Fix race between FREE_STATEID and LOCK nfsd: fix dentry refcounting on create
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git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds authored
Pull power management fixes from Rafael Wysocki: "Two hibernation fixes allowing it to work with the recently added randomization of the kernel identity mapping base on x86-64 and one cpufreq driver regression fix. Specifics: - Fix the x86 identity mapping creation helpers to avoid the assumption that the base address of the mapping will always be aligned at the PGD level, as it may be aligned at the PUD level if address space randomization is enabled (Rafael Wysocki). - Fix the hibernation core to avoid executing tracing functions before restoring the processor state completely during resume (Thomas Garnier). - Fix a recently introduced regression in the powernv cpufreq driver that causes it to crash due to an out-of-bounds array access (Akshay Adiga)" * tag 'pm-4.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM / hibernate: Restore processor state before using per-CPU variables x86/power/64: Always create temporary identity mapping correctly cpufreq: powernv: Fix crash in gpstate_timer_handler()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "This is bigger than usual - the reason is partly a pent-up stream of fixes after the merge window and partly accidental. The fixes are: - five patches to fix a boot failure on Andy Lutomirsky's laptop - four SGI UV platform fixes - KASAN fix - warning fix - documentation update - swap entry definition fix - pkeys fix - irq stats fix" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apic/x2apic, smp/hotplug: Don't use before alloc in x2apic_cluster_probe() x86/efi: Allocate a trampoline if needed in efi_free_boot_services() x86/boot: Rework reserve_real_mode() to allow multiple tries x86/boot: Defer setup_real_mode() to early_initcall time x86/boot: Synchronize trampoline_cr4_features and mmu_cr4_features directly x86/boot: Run reserve_bios_regions() after we initialize the memory map x86/irq: Do not substract irq_tlb_count from irq_call_count x86/mm: Fix swap entry comment and macro x86/mm/kaslr: Fix -Wformat-security warning x86/mm/pkeys: Fix compact mode by removing protection keys' XSAVE buffer manipulation x86/build: Reduce the W=1 warnings noise when compiling x86 syscall tables x86/platform/UV: Fix kernel panic running RHEL kdump kernel on UV systems x86/platform/UV: Fix problem with UV4 BIOS providing incorrect PXM values x86/platform/UV: Fix bug with iounmap() of the UV4 EFI System Table causing a crash x86/platform/UV: Fix problem with UV4 Socket IDs not being contiguous x86/entry: Clarify the RF saving/restoring situation with SYSCALL/SYSRET x86/mm: Disable preemption during CR3 read+write x86/mm/KASLR: Increase BRK pages for KASLR memory randomization x86/mm/KASLR: Fix physical memory calculation on KASLR memory randomization x86, kasan, ftrace: Put APIC interrupt handlers into .irqentry.text
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fixes from Ingo Molnar: "Misc fixes: a /dev/rtc regression fix, two APIC timer period calibration fixes, an ARM clocksource driver fix and a NOHZ power use regression fix" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/hpet: Fix /dev/rtc breakage caused by RTC cleanup x86/timers/apic: Inform TSC deadline clockevent device about recalibration x86/timers/apic: Fix imprecise timer interrupts by eliminating TSC clockevents frequency roundoff error timers: Fix get_next_timer_interrupt() computation clocksource/arm_arch_timer: Force per-CPU interrupt to be level-triggered
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Rafael J. Wysocki authored
* pm-sleep: PM / hibernate: Restore processor state before using per-CPU variables x86/power/64: Always create temporary identity mapping correctly * pm-cpufreq: cpufreq: powernv: Fix crash in gpstate_timer_handler()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes from Ingo Molnar: "Misc fixes: cputime fixes, two deadline scheduler fixes and a cgroups scheduling fix" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/cputime: Fix omitted ticks passed in parameter sched/cputime: Fix steal time accounting sched/deadline: Fix lock pinning warning during CPU hotplug sched/cputime: Mitigate performance regression in times()/clock_gettime() sched/fair: Fix typo in sync_throttle() sched/deadline: Fix wrap-around in DL heap
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Thomas Garnier authored
Restore the processor state before calling any other functions to ensure per-CPU variables can be used with KASLR memory randomization. Tracing functions use per-CPU variables (GS based on x86) and one was called just before restoring the processor state fully. It resulted in a double fault when both the tracing & the exception handler functions tried to use a per-CPU variable. Fixes: bb3632c6 (PM / sleep: trace events for suspend/resume) Reported-and-tested-by: Borislav Petkov <bp@suse.de> Reported-by: Jiri Kosina <jikos@kernel.org> Tested-by: Rafael J. Wysocki <rafael@kernel.org> Tested-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Thomas Garnier <thgarnie@google.com> Acked-by: Pavel Machek <pavel@ucw.cz> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: "Mostly tooling fixes, plus two uncore-PMU fixes, an uprobes fix, a perf-cgroups fix and an AUX events fix" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel/uncore: Add enable_box for client MSR uncore perf/x86/intel/uncore: Fix uncore num_counters uprobes/x86: Fix RIP-relative handling of EVEX-encoded instructions perf/core: Set cgroup in CPU contexts for new cgroup events perf/core: Fix sideband list-iteration vs. event ordering NULL pointer deference crash perf probe ppc64le: Fix probe location when using DWARF perf probe: Add function to post process kernel trace events tools: Sync cpufeatures headers with the kernel toops: Sync tools/include/uapi/linux/bpf.h with the kernel tools: Sync cpufeatures.h and vmx.h with the kernel perf probe: Support signedness casting perf stat: Avoid skew when reading events perf probe: Fix module name matching perf probe: Adjust map->reloc offset when finding kernel symbol from map perf hists: Trim libtraceevent trace_seq buffers perf script: Add 'bpf-output' field to usage message
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Jeff Layton authored
nfsd4_lock will take the st_mutex before working with the stateid it gets, but between the time when we drop the cl_lock and take the mutex, the stateid could become unhashed (a'la FREE_STATEID). If that happens the lock stateid returned to the client will be forgotten. Fix this by first moving the st_mutex acquisition into lookup_or_create_lock_state. Then, have it check to see if the lock stateid is still hashed after taking the mutex. If it's not, then put the stateid and try the find/create again. Signed-off-by: Jeff Layton <jlayton@redhat.com> Tested-by: Alexey Kodanev <alexey.kodanev@oracle.com> Cc: stable@vger.kernel.org # feb9dad5 nfsd: Always lock state exclusively. Cc: stable@vger.kernel.org Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking fixes from Ingo Molnar: "Misc fixes: lockstat fix, futex fix on !MMU systems, big endian fix for qrwlocks and a race fix for pvqspinlocks" * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/pvqspinlock: Fix a bug in qstat_read() locking/pvqspinlock: Fix double hash race locking/qrwlock: Fix write unlock bug on big endian systems futex: Assume all mappings are private on !MMU systems
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fix from Ingo Molnar: "A fix for an MSI regression" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq/msi: Make sure PCI MSIs are activated early
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull EFI fixes from Ingo Molnar: "A fix for EFI capsules and an SGI UV platform fix" * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: efi/capsule: Allocate whole capsule into virtual memory x86/platform/uv: Skip UV runtime services mapping in the efi_runtime_disabled case
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git://git.linux-nfs.org/projects/trondmy/linux-nfsLinus Torvalds authored
Pull NFS client bugfixes from Trond Myklebust: "Highlights include: - Stable patch from Olga to fix RPCSEC_GSS upcalls when the same user needs multiple different security services (e.g. krb5i and krb5p). - Stable patch to fix a regression introduced by the use of SO_REUSEPORT, and that prevented the use of multiple different NFS versions to the same server. - TCP socket reconnection timer fixes. - Patch from Neil to disable the use of IPv6 temporary addresses" * tag 'nfs-for-4.8-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: NFSv4: Cap the transport reconnection timer at 1/2 lease period NFSv4: Cleanup the setting of the nfs4 lease period SUNRPC: Limit the reconnect backoff timer to the max RPC message timeout SUNRPC: Fix reconnection timeouts NFSv4.2: LAYOUTSTATS may return NFS4ERR_ADMIN/DELEG_REVOKED SUNRPC: disable the use of IPv6 temporary addresses. SUNRPC: allow for upcalls for same uid but different gss service SUNRPC: Fix up socket autodisconnect SUNRPC: Handle EADDRNOTAVAIL on connection failures
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git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimmLinus Torvalds authored
Pull libnvdimm fixes from Dan Williams: - Fix for the nd_blk (NVDIMM Block Window Aperture) driver. A spec clarification requires the driver to mask off reserved bits in status register. This is tagged for -stable back to the v4.2 kernel. - Fix for a kernel crash in the nvdimm unit tests when module loading is interrupted with SIGTERM. Tagged for -stable since validation efforts external to Intel use the unit tests for qualifying backports. - Add a new 'size' sysfs attribute for the BTT (NVDIMM Block Translation Table) driver to make it symmetric with the other namespace personality drivers (PFN and DAX) that provide a size attribute for indicating how much namespace capacity is lost to metadata. The BTT change arrived at the start of the merge window and has appeared in a -next release. It can technically wait for 4.9, but it is small, fixes asymmetry in the libnvdimm-sysfs interface, and something I would have squeezed into the v4.8 pull request had it arrived a few days earlier. * 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: tools/testing/nvdimm: fix SIGTERM vs hotplug crash nvdimm, btt: add a size attribute for BTTs libnvdimm, nd_blk: mask off reserved status bits
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound fixes from Takashi Iwai: "A regression fix of HD-audio runtime PM and two USB quirks" * tag 'sound-4.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda - Manage power well properly for resume ALSA: usb-audio: Add quirk for ELP HD USB Camera ALSA: usb-audio: Add a sample rate quirk for Creative Live! Cam Socialize HD (VF0610)
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