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Linus Torvalds ea8ea737c4 NFS client updates for Linux 4.7
Highlights include:
 
 Features:
 - Add support for the NFS v4.2 COPY operation
 - Add support for NFS/RDMA over IPv6
 
 Bugfixes and cleanups:
 - Avoid race that crashes nfs_init_commit()
 - Fix oops in callback path
 - Fix LOCK/OPEN race when unlinking an open file
 - Choose correct stateids when using delegations in setattr, read and write
 - Don't send empty SETATTR after OPEN_CREATE
 - xprtrdma: Prevent server from writing a reply into memory client has released
 - xprtrdma: Support using Read list and Reply chunk in one RPC call
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Merge tag 'nfs-for-4.7-1' of git://git.linux-nfs.org/projects/anna/linux-nfs

Pull NFS client updates from Anna Schumaker:
 "Highlights include:

  Features:
   - Add support for the NFS v4.2 COPY operation
   - Add support for NFS/RDMA over IPv6

  Bugfixes and cleanups:
   - Avoid race that crashes nfs_init_commit()
   - Fix oops in callback path
   - Fix LOCK/OPEN race when unlinking an open file
   - Choose correct stateids when using delegations in setattr, read and
     write
   - Don't send empty SETATTR after OPEN_CREATE
   - xprtrdma: Prevent server from writing a reply into memory client
     has released
   - xprtrdma: Support using Read list and Reply chunk in one RPC call"

* tag 'nfs-for-4.7-1' of git://git.linux-nfs.org/projects/anna/linux-nfs: (61 commits)
  pnfs: pnfs_update_layout needs to consider if strict iomode checking is on
  nfs/flexfiles: Use the layout segment for reading unless it a IOMODE_RW and reading is disabled
  nfs/flexfiles: Helper function to detect FF_FLAGS_NO_READ_IO
  nfs: avoid race that crashes nfs_init_commit
  NFS: checking for NULL instead of IS_ERR() in nfs_commit_file()
  pnfs: make pnfs_layout_process more robust
  pnfs: rework LAYOUTGET retry handling
  pnfs: lift retry logic from send_layoutget to pnfs_update_layout
  pnfs: fix bad error handling in send_layoutget
  flexfiles: add kerneldoc header to nfs4_ff_layout_prepare_ds
  flexfiles: remove pointless setting of NFS_LAYOUT_RETURN_REQUESTED
  pnfs: only tear down lsegs that precede seqid in LAYOUTRETURN args
  pnfs: keep track of the return sequence number in pnfs_layout_hdr
  pnfs: record sequence in pnfs_layout_segment when it's created
  pnfs: don't merge new ff lsegs with ones that have LAYOUTRETURN bit set
  pNFS/flexfiles: When initing reads or writes, we might have to retry connecting to DSes
  pNFS/flexfiles: When checking for available DSes, conditionally check for MDS io
  pNFS/flexfile: Fix erroneous fall back to read/write through the MDS
  NFS: Reclaim writes via writepage are opportunistic
  NFSv4: Use the right stateid for delegations in setattr, read and write
  ...
2016-05-26 10:33:33 -07:00
Linus Torvalds 0b9210c9c8 xfs: update for 4.7-rc1
Changes in this update:
 o fixes for mount line parsing, sparse warnings, read-only compat
   feature remount behaviour
 o allow fast path symlink lookups for inline symlinks.
 o attribute listing cleanups
 o writeback goes direct to bios rather than indirecting through
   bufferheads
 o transaction allocation cleanup
 o optimised kmem_realloc
 o added configurable error handling for metadata write errors,
   changed default error handling behaviour from "retry forever" to
   "retry until unmount then fail"
 o fixed several inode cluster writeback lookup vs reclaim race
   conditions
 o fixed inode cluster writeback checking wrong inode after lookup
 o fixed bugs where struct xfs_inode freeing wasn't actually RCU safe
 o cleaned up inode reclaim tagging
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Merge tag 'xfs-for-linus-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs

Pull xfs updates from Dave Chinner:
 "A pretty average collection of fixes, cleanups and improvements in
  this request.

  Summary:
   - fixes for mount line parsing, sparse warnings, read-only compat
     feature remount behaviour
   - allow fast path symlink lookups for inline symlinks.
   - attribute listing cleanups
   - writeback goes direct to bios rather than indirecting through
     bufferheads
   - transaction allocation cleanup
   - optimised kmem_realloc
   - added configurable error handling for metadata write errors,
     changed default error handling behaviour from "retry forever" to
     "retry until unmount then fail"
   - fixed several inode cluster writeback lookup vs reclaim race
     conditions
   - fixed inode cluster writeback checking wrong inode after lookup
   - fixed bugs where struct xfs_inode freeing wasn't actually RCU safe
   - cleaned up inode reclaim tagging"

* tag 'xfs-for-linus-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs: (39 commits)
  xfs: fix warning in xfs_finish_page_writeback for non-debug builds
  xfs: move reclaim tagging functions
  xfs: simplify inode reclaim tagging interfaces
  xfs: rename variables in xfs_iflush_cluster for clarity
  xfs: xfs_iflush_cluster has range issues
  xfs: mark reclaimed inodes invalid earlier
  xfs: xfs_inode_free() isn't RCU safe
  xfs: optimise xfs_iext_destroy
  xfs: skip stale inodes in xfs_iflush_cluster
  xfs: fix inode validity check in xfs_iflush_cluster
  xfs: xfs_iflush_cluster fails to abort on error
  xfs: remove xfs_fs_evict_inode()
  xfs: add "fail at unmount" error handling configuration
  xfs: add configuration handlers for specific errors
  xfs: add configuration of error failure speed
  xfs: introduce table-based init for error behaviors
  xfs: add configurable error support to metadata buffers
  xfs: introduce metadata IO error class
  xfs: configurable error behavior via sysfs
  xfs: buffer ->bi_end_io function requires irq-safe lock
  ...
2016-05-26 10:13:40 -07:00
Linus Torvalds c5436731de Merge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging
Pull hwmon fixlets from Jean Delvare.

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  Documentation/hwmon: Update links in max34440
  hwmon: (emc2103) Fix typo in MODULE_PARM_DESC
2016-05-26 09:48:23 -07:00
Linus Torvalds 0e77816e09 MMC core:
- Prevent re-tuning while serving requests for RPMB partitions
  - Extend timeout for long read time quirk to support more eMMCs
 
 MMC host:
  - sdhci-acpi: Ensure connected devices are powered when probing
  - sdhci-pci|acpi: Remove unreliable MMC_CAP_BUS_WIDTH_TEST for Intel HWs
  - dw_mmc: Correct the assigning of max_blk_size
  - dw_mmc-rockchip: Allow RPMB partitions to be created
  - dw_mmc-rockchip: Set the drive phase properly
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Merge tag 'mmc-v4.7-rc1' of git://git.linaro.org/people/ulf.hansson/mmc

Pull MMC fixes from Ulf Hansson:
 "Here are some mmc fixes intended for v4.7 rc1.  They are based on a
  commit earlier in the merge window and have been tested in linux-next
  for a while.

  MMC core:
   - Prevent re-tuning while serving requests for RPMB partitions
   - Extend timeout for long read time quirk to support more eMMCs

  MMC host:
   - sdhci-acpi: Ensure connected devices are powered when probing
   - sdhci-pci|acpi: Remove unreliable MMC_CAP_BUS_WIDTH_TEST for Intel HWs
   - dw_mmc: Correct the assigning of max_blk_size
   - dw_mmc-rockchip: Allow RPMB partitions to be created
   - dw_mmc-rockchip: Set the drive phase properly"

* tag 'mmc-v4.7-rc1' of git://git.linaro.org/people/ulf.hansson/mmc:
  mmc: sdhci-acpi: Remove MMC_CAP_BUS_WIDTH_TEST for Intel controllers
  mmc: sdhci-pci: Remove MMC_CAP_BUS_WIDTH_TEST for Intel controllers
  mmc: longer timeout for long read time quirk
  mmc: dw_mmc: rockchip: Set the drive phase properly
  mmc: dw_mmc: fix the wrong max_blk_size
  mmc: dw_mmc-rockchip: add MMC_CAP_CMD23 capabilities
  mmc: sdhci-acpi: Ensure connected devices are powered when probing
  ACPI / PM: Export acpi_device_fix_up_power()
  mmc: block: Pause re-tuning while switched to the RPMB partition
  mmc: block: Always switch back to main area after RPMB access
  mmc: core: Add a facility to "pause" re-tuning
2016-05-26 09:36:10 -07:00
Linus Torvalds bfb764440d Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux
Pull thermal management updates from Zhang Rui:

 - Introduce generic ADC thermal driver, based on OF thermal (Laxman
   Dewangan)

 - Introduce new thermal driver for Tango chips (Marc Gonzalez)

 - Rockchip driver support for RK3399, RK3366, and some fixes (Caesar
   Wang, Elaine Zhang and Shawn Lin)

 - Add CPU power cooling model to Mediatek thermal driver (Dawei Chien)

 - Wider usage of dev_thermal_zone_of_sensor_register (Eduardo Valentin)

 - TI thermal driver gained a new maintainer (Keerthy).

 - Enabled powerclamp driver by checking CPU feature and package cstate
   counter instead of CPU whitelist (Jacob Pan)

 - Various fixes on thermal governor, OF thermal, Tegra, and RCAR

* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux: (50 commits)
  thermal: tango: initialize TEMPSI_CFG
  thermal: rockchip: use the usleep_range instead of udelay
  thermal: rockchip: add the notes for better reading
  thermal: rockchip: Support RK3366 SoCs in the thermal driver
  thermal: rockchip: handle the power sequence for tsadc controller
  thermal: rockchip: update the tsadc table for rk3399
  thermal: rockchip: fixes the code_to_temp for tsadc driver
  thermal: rockchip: disable thermal->clk in err case
  thermal: tegra: add Tegra132 specific SOC_THERM driver
  thermal: fix ptr_ret.cocci warnings
  thermal: mediatek: Add cpu dynamic power cooling model.
  thermal: generic-adc: Add ADC based thermal sensor driver
  thermal: generic-adc: Add DT binding for ADC based thermal sensor
  thermal: tegra: fix static checker warning
  thermal: tegra: mark PM functions __maybe_unused
  thermal: add temperature sensor support for tango SoC
  thermal: hisilicon: fix IRQ imbalance enabling
  thermal: hisilicon: support to use any sensor
  thermal: rcar: Remove binding docs for r8a7794
  thermal: tegra: add PM support
  ...
2016-05-26 09:23:43 -07:00
Linus Torvalds 159d08f4b8 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull Yama locking fix from James Morris:
 "Fix for the Yama LSM"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  Yama: fix double-spinlock and user access in atomic context
2016-05-26 09:15:19 -07:00
Tom Haynes c7d73af2d2 pnfs: pnfs_update_layout needs to consider if strict iomode checking is on
As flexfiles has FF_FLAGS_NO_READ_IO, there is a need to generically
support enforcing that a IOMODE_RW segment will not allow READ I/O.

Signed-off-by: Tom Haynes <loghyr@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-05-26 08:40:56 -04:00
Tom Haynes 602c4cd452 nfs/flexfiles: Use the layout segment for reading unless it a IOMODE_RW and reading is disabled
Signed-off-by: Tom Haynes <loghyr@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-05-26 08:40:51 -04:00
Glenn Dayton 1dc2c9f54b Documentation/hwmon: Update links in max34440
It appears the website for maxim-ic.com changed to
maximintegrated.com.

Signed-off-by: Glenn Dayton <glenn.dayton24@gmail.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
2016-05-26 11:06:53 +02:00
Dan Carpenter 54f0ffc4e2 hwmon: (emc2103) Fix typo in MODULE_PARM_DESC
"apd" was intended here instead of "init".

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
2016-05-26 11:06:53 +02:00
Linus Torvalds 2f7c3a18a2 Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
 "Misc fixes: EFI, entry code, pkeys and MPX fixes, TASK_SIZE cleanups
  and a tsc frequency table fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm: Switch from TASK_SIZE to TASK_SIZE_MAX in the page fault code
  x86/fsgsbase/64: Use TASK_SIZE_MAX for FSBASE/GSBASE upper limits
  x86/mm/mpx: Work around MPX erratum SKD046
  x86/entry/64: Fix stack return address retrieval in thunk
  x86/efi: Fix 7-parameter efi_call()s
  x86/cpufeature, x86/mm/pkeys: Fix broken compile-time disabling of pkeys
  x86/tsc: Add missing Cherrytrail frequency to the table
2016-05-25 17:37:33 -07:00
Linus Torvalds f89eae4ee7 Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
 "Two fixes: one for a lost wakeup, the other to fix the compiler
  optimizing out preempt operations on ARM64 (and possibly other non-x86
  architectures)"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/core: Fix remote wakeups
  sched/preempt: Fix preempt_count manipulations
2016-05-25 17:11:43 -07:00
Linus Torvalds bdc6b758e4 Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf updates from Ingo Molnar:
 "Mostly tooling and PMU driver fixes, but also a number of late updates
  such as the reworking of the call-chain size limiting logic to make
  call-graph recording more robust, plus tooling side changes for the
  new 'backwards ring-buffer' extension to the perf ring-buffer"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (34 commits)
  perf record: Read from backward ring buffer
  perf record: Rename variable to make code clear
  perf record: Prevent reading invalid data in record__mmap_read
  perf evlist: Add API to pause/resume
  perf trace: Use the ptr->name beautifier as default for "filename" args
  perf trace: Use the fd->name beautifier as default for "fd" args
  perf report: Add srcline_from/to branch sort keys
  perf evsel: Record fd into perf_mmap
  perf evsel: Add overwrite attribute and check write_backward
  perf tools: Set buildid dir under symfs when --symfs is provided
  perf trace: Only auto set call-graph to "dwarf" when syscalls are being traced
  perf annotate: Sort list of recognised instructions
  perf annotate: Fix identification of ARM blt and bls instructions
  perf tools: Fix usage of max_stack sysctl
  perf callchain: Stop validating callchains by the max_stack sysctl
  perf trace: Fix exit_group() formatting
  perf top: Use machine->kptr_restrict_warned
  perf trace: Warn when trying to resolve kernel addresses with kptr_restrict=1
  perf machine: Do not bail out if not managing to read ref reloc symbol
  perf/x86/intel/p4: Trival indentation fix, remove space
  ...
2016-05-25 17:05:40 -07:00
Jann Horn dca6b41491 Yama: fix double-spinlock and user access in atomic context
Commit 8a56038c2a ("Yama: consolidate error reporting") causes lockups
when someone hits a Yama denial. Call chain:

process_vm_readv -> process_vm_rw -> process_vm_rw_core -> mm_access
-> ptrace_may_access
task_lock(...) is taken
__ptrace_may_access -> security_ptrace_access_check
-> yama_ptrace_access_check -> report_access -> kstrdup_quotable_cmdline
-> get_cmdline -> access_process_vm -> get_task_mm
task_lock(...) is taken again

task_lock(p) just calls spin_lock(&p->alloc_lock), so at this point,
spin_lock() is called on a lock that is already held by the current
process.

Also: Since the alloc_lock is a spinlock, sleeping inside
security_ptrace_access_check hooks is probably not allowed at all? So it's
not even possible to print the cmdline from in there because that might
involve paging in userspace memory.

It would be tempting to rewrite ptrace_may_access() to drop the alloc_lock
before calling the LSM, but even then, ptrace_may_access() itself might be
called from various contexts in which you're not allowed to sleep; for
example, as far as I understand, to be able to hold a reference to another
task, usually an RCU read lock will be taken (see e.g. kcmp() and
get_robust_list()), so that also prohibits sleeping. (And using e.g. FUSE,
a user can cause pagefault handling to take arbitrary amounts of time -
see https://bugs.chromium.org/p/project-zero/issues/detail?id=808.)

Therefore, AFAIK, in order to print the name of a process below
security_ptrace_access_check(), you'd have to either grab a reference to
the mm_struct and defer the access violation reporting or just use the
"comm" value that's stored in kernelspace and accessible without big
complications. (Or you could try to use some kind of atomic remote VM
access that fails if the memory isn't paged in, similar to
copy_from_user_inatomic(), and if necessary fall back to comm, but
that'd be kind of ugly because the comm/cmdline choice would look
pretty random to the user.)

Fix it by deferring reporting of the access violation until current
exits kernelspace the next time.

v2: Don't oops on PTRACE_TRACEME, call report_access under
task_lock(current). Also fix nonsensical comment. And don't use
GPF_ATOMIC for memory allocation with no locks held.
This patch is tested both for ptrace attach and ptrace traceme.

Fixes: 8a56038c2a ("Yama: consolidate error reporting")
Signed-off-by: Jann Horn <jann@thejh.net>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <james.l.morris@oracle.com>
2016-05-26 09:56:18 +10:00
Linus Torvalds c4a346002b Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool build fix from Ingo Molnar:
 "An libtool fix for older libelf versions"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Allow building with older libelf
2016-05-25 16:52:19 -07:00
Linus Torvalds 0985b65d3b Merge branch 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs iov_iter regression fix from Al Viro:
 "Fix for braino in 'fold checks into iterate_and_advance()'"

* 'work.iov_iter' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  do "fold checks into iterate_and_advance()" right
2016-05-25 15:59:09 -07:00
Linus Torvalds 55c1c7b2b6 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs xattr regression fixes from Al Viro.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  make xattr_resolve_handlers() safe to use with NULL ->s_xattr
  xattr: Fail with -EINVAL for NULL attribute names
2016-05-25 15:54:35 -07:00
Linus Torvalds e92677dfce Additional ACPI update for v4.7-rc1
Just one fix for incorrect async_synchronize_cookie() usage in the
 ACPI battery driver (Chris Wilson).
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Merge tag 'acpi-4.7-rc1-more' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fix from Rafael Wysocki:
 "Additional ACPI update for v4.7-rc1

  Just one fix for incorrect async_synchronize_cookie() usage in the
  ACPI battery driver (Chris Wilson)"

* tag 'acpi-4.7-rc1-more' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / battery: Correctly serialise with the pending async probe
2016-05-25 15:38:56 -07:00
Linus Torvalds 877c057d2b More power management updates for v4.7-rc1
- Stable-candidate cpuidle fix to make it check the right variable
    when deciding whether or not to enable interrupts on the local CPU
    so as to avoid enabling iterrupts too early in some cases if the
    system has both coupled and per-core idle states (Daniel Lezcano).
 
  - Stable-candidate PM core fix to make it handle failures at the
    "late suspend" stage of device suspend consistently for all
    devices regardless of whether or not async suspend/resume is
    enabled for them (Rafael Wysocki).
 
  - Cleanups in the cpufreq core, the schedutil governor and the
    intel_pstate driver (Rafael Wysocki, Pankaj Gupta, Viresh Kumar).
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Merge tag 'pm-4.7-rc1-more' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull more power management updates from Rafael Wysocki:
 "These are two stable-candidate fixes (PM core, cpuidle) and a bunch of
  cpufreq cleanups.

  Specifics:

   - Stable-candidate cpuidle fix to make it check the right variable
     when deciding whether or not to enable interrupts on the local CPU
     so as to avoid enabling iterrupts too early in some cases if the
     system has both coupled and per-core idle states (Daniel Lezcano).

   - Stable-candidate PM core fix to make it handle failures at the
     "late suspend" stage of device suspend consistently for all devices
     regardless of whether or not async suspend/resume is enabled for
     them (Rafael Wysocki).

   - Cleanups in the cpufreq core, the schedutil governor and the
     intel_pstate driver (Rafael Wysocki, Pankaj Gupta, Viresh Kumar)"

* tag 'pm-4.7-rc1-more' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / sleep: Handle failures in device_suspend_late() consistently
  cpufreq: schedutil: Improve prints messages with pr_fmt
  cpuidle: Fix cpuidle_state_is_coupled() argument in cpuidle_enter()
  cpufreq: simplified goto out in cpufreq_register_driver()
  cpufreq: governor: CPUFREQ_GOV_STOP never fails
  cpufreq: governor: CPUFREQ_GOV_POLICY_EXIT never fails
  intel_pstate: Simplify conditional in intel_pstate_set_policy()
2016-05-25 15:29:21 -07:00
Al Viro 19f1845933 do "fold checks into iterate_and_advance()" right
the only case when we should skip the iterate_and_advance() guts
is when nothing's left in the iterator, _not_ just when requested
amount is 0.  Said guts will do nothing in the latter case anyway;
the problem we tried to deal with in the aforementioned commit is
that when there's nothing left *and* the amount requested is 0,
we might end up deferencing one iovec too many; the value we fetch
from there is discarded in that case, but theoretically it might
oops if the iovec array ends exactly at the end of page with the
next page not mapped.

Bailing out on zero size requested had an unexpected side effect -
zero-length segment in the beginning of iovec array ended up
throwing do_loop_readv_writev() into infinite spin; we do not
advance past the empty segment at all.  Reproducer is trivial:
echo '#include <sys/uio.h>' >a.c
echo 'main() {char c; struct iovec v[] = {{&c,0},{&c,1}}; readv(0,v,2);}' >>a.c
cc a.c && ./a.out </proc/uptime

which should end up with the process not hanging.  Probably ought to
go into LTP or xfstests...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-25 18:16:02 -04:00
Al Viro 0040773bff make xattr_resolve_handlers() safe to use with NULL ->s_xattr
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-25 17:34:41 -04:00
Andreas Gruenbacher aaf431b4f9 xattr: Fail with -EINVAL for NULL attribute names
Commit 98e9cb57 improved the xattr name checks in xattr_resolve_name but
didn't update the NULL attribute name check appropriately, so NULL
attribute names lead to NULL pointer dereferences.  Turn that into
-EINVAL results instead.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
  fs/xattr.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-25 17:33:47 -04:00
Rafael J. Wysocki 0cc4b48149 Merge branch 'acpi-battery'
* acpi-battery:
  ACPI / battery: Correctly serialise with the pending async probe
2016-05-25 22:11:28 +02:00
Rafael J. Wysocki 4c2628cd75 Merge branches 'pm-cpufreq', 'pm-cpuidle' and 'pm-core'
* pm-cpufreq:
  cpufreq: schedutil: Improve prints messages with pr_fmt
  cpufreq: simplified goto out in cpufreq_register_driver()
  cpufreq: governor: CPUFREQ_GOV_STOP never fails
  cpufreq: governor: CPUFREQ_GOV_POLICY_EXIT never fails
  intel_pstate: Simplify conditional in intel_pstate_set_policy()

* pm-cpuidle:
  cpuidle: Fix cpuidle_state_is_coupled() argument in cpuidle_enter()

* pm-core:
  PM / sleep: Handle failures in device_suspend_late() consistently
2016-05-25 21:54:45 +02:00
Linus Torvalds ecc5fbd5ef pwm: Changes for v4.7-rc1
This set of changes introduces an atomic API to the PWM subsystem. This
 is influenced by the DRM atomic API that was introduced a while back,
 though it is obviously a lot simpler. The fundamental idea remains the
 same, though: drivers provide a single callback to implement the atomic
 configuration of a PWM channel.
 
 As a side-effect the PWM subsystem gains the ability for initial state
 retrieval, so that the logical state mirrors that of the hardware. Many
 use-cases don't care about this, but for others it is essential.
 
 These new features require changes in all users, which these patches
 take care of. The core is transitioned to use the atomic callback if
 available and provides a fallback mechanism for other drivers.
 
 Changes to transition users and drivers to the atomic API are postponed
 to v4.8.
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Merge tag 'pwm/for-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "This set of changes introduces an atomic API to the PWM subsystem.
  This is influenced by the DRM atomic API that was introduced a while
  back, though it is obviously a lot simpler.  The fundamental idea
  remains the same, though: drivers provide a single callback to
  implement the atomic configuration of a PWM channel.

  As a side-effect the PWM subsystem gains the ability for initial state
  retrieval, so that the logical state mirrors that of the hardware.
  Many use-cases don't care about this, but for others it is essential.

  These new features require changes in all users, which these patches
  take care of.  The core is transitioned to use the atomic callback if
  available and provides a fallback mechanism for other drivers.

  Changes to transition users and drivers to the atomic API are
  postponed to v4.8"

* tag 'pwm/for-4.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm: (30 commits)
  pwm: Add information about polarity, duty cycle and period to debugfs
  pwm: Switch to the atomic API
  pwm: Update documentation
  pwm: Add core infrastructure to allow atomic updates
  pwm: Add hardware readout infrastructure
  pwm: Move the enabled/disabled info into pwm_state
  pwm: Introduce the pwm_state concept
  pwm: Keep PWM state in sync with hardware state
  ARM: Explicitly apply PWM config extracted from pwm_args
  drm: i915: Explicitly apply PWM config extracted from pwm_args
  input: misc: pwm-beeper: Explicitly apply PWM config extracted from pwm_args
  input: misc: max8997: Explicitly apply PWM config extracted from pwm_args
  backlight: lm3630a: explicitly apply PWM config extracted from pwm_args
  backlight: lp855x: Explicitly apply PWM config extracted from pwm_args
  backlight: lp8788: Explicitly apply PWM config extracted from pwm_args
  backlight: pwm_bl: Use pwm_get_args() where appropriate
  fbdev: ssd1307fb: Use pwm_get_args() where appropriate
  regulator: pwm: Use pwm_get_args() where appropriate
  leds: pwm: Use pwm_get_args() where appropriate
  input: misc: max77693: Use pwm_get_args() where appropriate
  ...
2016-05-25 10:40:15 -07:00
Tom Haynes fb1084e332 nfs/flexfiles: Helper function to detect FF_FLAGS_NO_READ_IO
The mds can inform the client not to use the IOMODE_RW layout
segment for doing READs. I.e., it is basically a
IOMODE_WRITE layout segment.

It would do this to not interfere with the WRITEs.

Signed-off-by: Tom Haynes <loghyr@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-05-25 13:35:20 -04:00
Linus Torvalds 1f93d2abf4 Merge git://www.linux-watchdog.org/linux-watchdog
Pull watchdog updates from Wim Van Sebroeck:

 - add support for Fintek F81865 Super-IO chip

 - add support for watchdogs (RWDT and SWDT) found on RCar Gen3 based
   SoCs from Renesas

 - octeon: Handle the FROZEN hot plug notifier actions

 - f71808e_wdt fixes and cleanups

 - some small improvements in code and documentation

* git://www.linux-watchdog.org/linux-watchdog:
  MAINTAINERS: Add file patterns for watchdog device tree bindings
  Documentation: Add ebc-c384_wdt watchdog-parameters.txt entry
  watchdog: shwdt: Use setup_timer()
  watchdog: cpwd: Use setup_timer()
  arm64: defconfig: enable Renesas Watchdog Timer
  watchdog: renesas-wdt: add driver
  watchdog: remove error message when unable to allocate watchdog device
  watchdog: f71808e_wdt: Fix WDTMOUT_STS register read
  watchdog: f71808e_wdt: Fix typo
  watchdog: f71808e_wdt: Add F81865 support
  watchdog: sp5100_tco: properly check for new register layouts
  watchdog: core: Fix circular locking dependency
  watchdog: core: fix trivial typo in a comment
  watchdog: hpwdt: Adjust documentation to match latest kernel module parameters.
  watchdog: imx2_wdt: add external reset support via dt prop
  watchdog: octeon: Handle the FROZEN hot plug notifier actions.
  watchdog: qcom: Report reboot reason
2016-05-25 10:19:17 -07:00
Weston Andros Adamson ade8febde0 nfs: avoid race that crashes nfs_init_commit
Since the patch "NFS: Allow multiple commit requests in flight per file"
we can run multiple simultaneous commits on the same inode.  This
introduced a race over collecting pages to commit that made it possible
to call nfs_init_commit() with an empty list - which causes crashes like
the one below.

The fix is to catch this race and avoid calling nfs_init_commit and
initiate_commit when there is no work to do.

Here is the crash:

[600522.076832] BUG: unable to handle kernel NULL pointer dereference at 0000000000000040
[600522.078475] IP: [<ffffffffa0479e72>] nfs_init_commit+0x22/0x130 [nfs]
[600522.078745] PGD 4272b1067 PUD 4272cb067 PMD 0
[600522.078972] Oops: 0000 [#1] SMP
[600522.079204] Modules linked in: nfsv3 nfs_layout_flexfiles rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache dcdbas ip6t_rpfilter ip6t_REJECT nf_reject_ipv6 xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_nat nf_conntrack_ipv6 nf_defrag_ipv6 nf_nat_ipv6 ip6table_mangle ip6table_security ip6table_raw ip6table_filter ip6_tables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_mangle iptable_security iptable_raw vmw_vsock_vmci_transport vsock bonding ipmi_devintf ipmi_msghandler coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel ppdev vmw_balloon parport_pc parport acpi_cpufreq vmw_vmci i2c_piix4 shpchp nfsd auth_rpcgss nfs_acl lockd grace sunrpc xfs libcrc32c vmwgfx drm_kms_helper ttm drm crc32c_intel serio_raw vmxnet3
[600522.081380]  vmw_pvscsi ata_generic pata_acpi
[600522.081809] CPU: 3 PID: 15667 Comm: /usr/bin/python Not tainted 4.1.9-100.pd.88.el7.x86_64 #1
[600522.082281] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 09/30/2014
[600522.082814] task: ffff8800bbbfa780 ti: ffff88042ae84000 task.ti: ffff88042ae84000
[600522.083378] RIP: 0010:[<ffffffffa0479e72>]  [<ffffffffa0479e72>] nfs_init_commit+0x22/0x130 [nfs]
[600522.083973] RSP: 0018:ffff88042ae87438  EFLAGS: 00010246
[600522.084571] RAX: 0000000000000000 RBX: ffff880003485e40 RCX: ffff88042ae87588
[600522.085188] RDX: 0000000000000000 RSI: ffff88042ae874b0 RDI: ffff880003485e40
[600522.085756] RBP: ffff88042ae87448 R08: ffff880003486010 R09: ffff88042ae874b0
[600522.086332] R10: 0000000000000000 R11: 0000000000000005 R12: ffff88042ae872d0
[600522.086905] R13: ffff88042ae874b0 R14: ffff880003485e40 R15: ffff88042704c840
[600522.087484] FS:  00007f4728ff2740(0000) GS:ffff88043fd80000(0000) knlGS:0000000000000000
[600522.088070] CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[600522.088663] CR2: 0000000000000040 CR3: 000000042b6aa000 CR4: 00000000001406e0
[600522.089327] Stack:
[600522.089926]  0000000000000001 ffff88042ae87588 ffff88042ae874f8 ffffffffa04f09fa
[600522.090549]  0000000000017840 0000000000017840 ffff88042ae87588 ffff8803258d9930
[600522.091169]  ffff88042ae87578 ffffffffa0563d80 0000000000000000 ffff88042704c840
[600522.091789] Call Trace:
[600522.092420]  [<ffffffffa04f09fa>] pnfs_generic_commit_pagelist+0x1da/0x320 [nfsv4]
[600522.093052]  [<ffffffffa0563d80>] ? ff_layout_commit_prepare_v3+0x30/0x30 [nfs_layout_flexfiles]
[600522.093696]  [<ffffffffa0562645>] ff_layout_commit_pagelist+0x15/0x20 [nfs_layout_flexfiles]
[600522.094359]  [<ffffffffa047bc78>] nfs_generic_commit_list+0xe8/0x120 [nfs]
[600522.095032]  [<ffffffffa047bd6a>] nfs_commit_inode+0xba/0x110 [nfs]
[600522.095719]  [<ffffffffa046ac54>] nfs_release_page+0x44/0xd0 [nfs]
[600522.096410]  [<ffffffff811a8122>] try_to_release_page+0x32/0x50
[600522.097109]  [<ffffffff811bd4f1>] shrink_page_list+0x961/0xb30
[600522.097812]  [<ffffffff811bdced>] shrink_inactive_list+0x1cd/0x550
[600522.098530]  [<ffffffff811bea65>] shrink_lruvec+0x635/0x840
[600522.099250]  [<ffffffff811bed60>] shrink_zone+0xf0/0x2f0
[600522.099974]  [<ffffffff811bf312>] do_try_to_free_pages+0x192/0x470
[600522.100709]  [<ffffffff811bf6ca>] try_to_free_pages+0xda/0x170
[600522.101464]  [<ffffffff811b2198>] __alloc_pages_nodemask+0x588/0x970
[600522.102235]  [<ffffffff811fbbd5>] alloc_pages_vma+0xb5/0x230
[600522.103000]  [<ffffffff813a1589>] ? cpumask_any_but+0x39/0x50
[600522.103774]  [<ffffffff811d6115>] wp_page_copy.isra.55+0x95/0x490
[600522.104558]  [<ffffffff810e3438>] ? __wake_up+0x48/0x60
[600522.105357]  [<ffffffff811d7d3b>] do_wp_page+0xab/0x4f0
[600522.106137]  [<ffffffff810a1bbb>] ? release_task+0x36b/0x470
[600522.106902]  [<ffffffff8126dbd7>] ? eventfd_ctx_read+0x67/0x1c0
[600522.107659]  [<ffffffff811da2a8>] handle_mm_fault+0xc78/0x1900
[600522.108431]  [<ffffffff81067ef1>] __do_page_fault+0x181/0x420
[600522.109173]  [<ffffffff811446a6>] ? __audit_syscall_exit+0x1e6/0x280
[600522.109893]  [<ffffffff810681c0>] do_page_fault+0x30/0x80
[600522.110594]  [<ffffffff81024f36>] ? syscall_trace_leave+0xc6/0x120
[600522.111288]  [<ffffffff81790a58>] page_fault+0x28/0x30
[600522.111947] Code: 5d c3 0f 1f 80 00 00 00 00 0f 1f 44 00 00 55 4c 8d 87 d0 01 00 00 48 89 e5 53 48 89 fb 48 83 ec 08 4c 8b 0e 49 8b 41 18 4c 39 ce <48> 8b 40 40 4c 8b 50 30 74 24 48 8b 87 d0 01 00 00 48 8b 7e 08
[600522.113343] RIP  [<ffffffffa0479e72>] nfs_init_commit+0x22/0x130 [nfs]
[600522.114003]  RSP <ffff88042ae87438>
[600522.114636] CR2: 0000000000000040

Fixes: af7cf057 (NFS: Allow multiple commit requests in flight per file)
CC: stable@vger.kernel.org
Signed-off-by: Weston Andros Adamson <dros@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-05-25 12:59:01 -04:00
Linus Torvalds 48dd7cefa0 VFIO updates for v4.7-rc1
- Hide INTx on certain known broken devices (Alex Williamson)
  - Additional backdoor reset detection (Alex Williamson)
  - Remove unused iommudata reference (Alexey Kardashevskiy)
  - Use cfg_size to avoid probing extended config space (Alexey Kardashevskiy)
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Merge tag 'vfio-v4.7-rc1' of git://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - Hide INTx on certain known broken devices (Alex Williamson)

 - Additional backdoor reset detection (Alex Williamson)

 - Remove unused iommudata reference (Alexey Kardashevskiy)

 - Use cfg_size to avoid probing extended config space (Alexey
   Kardashevskiy)

* tag 'vfio-v4.7-rc1' of git://github.com/awilliam/linux-vfio:
  vfio_pci: Test for extended capabilities if config space > 256 bytes
  vfio_iommu_spapr_tce: Remove unneeded iommu_group_get_iommudata
  vfio/pci: Add test for BAR restore
  vfio/pci: Hide broken INTx support from user
2016-05-25 09:47:26 -07:00
Linus Torvalds b462b37b08 Merge tag 'drm-4.7-rc1-headers-fix' of git://people.freedesktop.org/~airlied/linux
Pull header warning fix from Dave Airlie:
 "Here is the C++ guards warning fix from Arnd"

[ Background: there are 'extern "C" { }' guards in include/uapi for the
  GPU headers.

  They should arguably be wrapped somehow, but as it is they caused
  checkpatch to warn because it would trigger on the 'extern' and think
  it's exporting a function or variable from the kernel to user space.

  This just fixes checkpatch.  Whether we wrap the C++ guards some way
  in the future will be an independent issue. ]

* tag 'drm-4.7-rc1-headers-fix' of git://people.freedesktop.org/~airlied/linux:
  headers_check: don't warn about c++ guards
2016-05-25 09:37:50 -07:00
Linus Torvalds 24c82fbb86 Merge branch 'parisc-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:

 - Add native high-resolution timing code for sched_clock() and other
   timing functions based on the processor internal cr16 cycle counters

 - Add syscall tracepoint support

 - Add regset support

 - Speed up get_user() and put_user() functions

 - Updated futex.h to match generic implementation (John David Anglin)

 - A few smaller ftrace build fixes

 - Fixed thuge-gen kernel self test to utilize architectured MAP_HUGETLB
   value

 - Added parisc architecture to seccomp_bpf kernel self test

 - Various typo fixes (Andrea Gelmini)

* 'parisc-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Whitespace cleanups in unistd.h
  parisc: Use long jump to reach ftrace_return_to_handler()
  parisc: Fix typo in fpudispatch.c
  parisc: Fix typos in eisa_eeprom.h
  parisc: Fix typo in ldcw.h
  parisc: Fix typo in pdc.h
  parisc: Update futex.h to match generic implementation
  parisc: Merge ftrace C-helper and assembler functions into .text.hot section
  selftests/thuge-gen: Use platform specific MAP_HUGETLB value
  parisc: Add native high-resolution sched_clock() implementation
  parisc: Add ARCH_TRACEHOOK and regset support
  parisc: Add 64bit get_user() and put_user() for 32bit kernel
  parisc: Simplify and speed up get_user() and put_user()
  parisc: Add syscall tracepoint support
2016-05-25 09:27:52 -07:00
Dan Carpenter 2997bfd049 NFS: checking for NULL instead of IS_ERR() in nfs_commit_file()
nfs_create_request() doesn't return NULL, it returns error pointers.

Fixes: 67911c8f18 ('NFS: Add nfs_commit_file()')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
2016-05-25 12:11:58 -04:00
Helge Deller 784c2213e7 parisc: Whitespace cleanups in unistd.h
Clean up whitespaces and mark unused syscalls as such.

Signed-off-by: Helge Deller <deller@gmx.de>
2016-05-25 15:40:49 +02:00
Peter Zijlstra b7e7ade34e sched/core: Fix remote wakeups
Commit:

  b5179ac70d ("sched/fair: Prepare to fix fairness problems on migration")

... introduced a bug: Mike Galbraith found that it introduced a
performance regression, while Paul E. McKenney reported lost
wakeups and bisected it to this commit.

The reason is that I mis-read ttwu_queue() such that I assumed any
wakeup that got a remote queue must have had the task migrated.

Since this is not so; we need to transfer this information between
queueing the wakeup and actually doing the wakeup. Use a new
task_struct::sched_flag for this, we already write to
sched_contributes_to_load in the wakeup path so this is a hot and
modified cacheline.

Reported-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Reported-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Tested-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Hunter <ahh@google.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Ben Segall <bsegall@google.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Fenghua Yu <fenghua.yu@intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Morten Rasmussen <morten.rasmussen@arm.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Paul Turner <pjt@google.com>
Cc: Pavan Kondeti <pkondeti@codeaurora.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Quentin Casasnovas <quentin.casasnovas@oracle.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: byungchul.park@lge.com
Fixes: b5179ac70d ("sched/fair: Prepare to fix fairness problems on migration")
Link: http://lkml.kernel.org/r/20160523091907.GD15728@worktop.ger.corp.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-05-25 08:35:18 +02:00
Linus Torvalds 28165ec7a9 ARM: SoC fixes for 4.7
This is a first set of bug fixes on top of what was merged for 4.7.
 Two patches for lpc32xx address a harmless build warning that was
 just introduced, one patch for the mediatek soc driver fixes a warning
 for arm64, and the pxa changes are minor cleanups that should have
 been part of the original pull requests but that I forgot to apply
 to the cleanup-fixes branch earlier.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Arnd Bergmann:
 "This is a first set of bug fixes on top of what was merged for 4.7.

  Two patches for lpc32xx address a harmless build warning that was just
  introduced, one patch for the mediatek soc driver fixes a warning for
  arm64, and the pxa changes are minor cleanups that should have been
  part of the original pull requests but that I forgot to apply to the
  cleanup-fixes branch earlier"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: lpc32xx: fix NR_IRQS confict
  ARM: lpc32xx: remove legacy irq controller driver
  soc: mtk-pmic-wrap: avoid integer overflow warning
  ARM: pxa: Remove CLK_IS_ROOT
  ARM: pxa: activate pinctrl for device-tree machines
2016-05-24 15:50:58 -07:00
Linus Torvalds 08344f3b43 ARM: SoC: late DT updates for v4.7
This is a collection of a few late fixes and other misc. stuff that
 had dependencies on things being merged from other trees.
 
 The Renesas R-Car power domain handling, and the Nvidia Tegra USB
 support both hand notable changes that required changing the DT binding
 in a way that only provides compatibility with old DT blobs on new
 kernels but not vice versa. As a consequence, the DT changes
 are based on top of the driver changes and are now in this branch.
 
 For NXP i.MX and Samsung Exynos, the changes in here depend on
 other changes that got merged through the clk maintainer tree.
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Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC late DT updates from Arnd Bergmann:
 "This is a collection of a few late fixes and other misc stuff that had
  dependencies on things being merged from other trees.

  The Renesas R-Car power domain handling, and the Nvidia Tegra USB
  support both hand notable changes that required changing the DT
  binding in a way that only provides compatibility with old DT blobs on
  new kernels but not vice versa.  As a consequence, the DT changes are
  based on top of the driver changes and are now in this branch.

  For NXP i.MX and Samsung Exynos, the changes in here depend on other
  changes that got merged through the clk maintainer tree"

* tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (35 commits)
  ARM: dts: exynos: Add support of Bus frequency using VDD_INT for exynos5422-odroidxu3
  ARM: dts: exynos: Add bus nodes using VDD_INT for Exynos542x SoC
  ARM: dts: exynos: Add NoC Probe dt node for Exynos542x SoC
  ARM: dts: exynos: Add support of bus frequency for exynos4412-trats/odroidu3
  ARM: dts: exynos: Expand the voltage range of buck1/3 regulator for exynos4412-odroidu3
  ARM: dts: exynos: Add support of bus frequency using VDD_INT for exynos3250-rinato
  ARM: dts: exynos: Add exynos4412-ppmu-common dtsi to delete duplicate PPMU nodes
  ARM: dts: exynos: Add bus nodes using VDD_MIF for Exynos4210
  ARM: dts: exynos: Add bus nodes using VDD_INT for Exynos4x12
  ARM: dts: exynos: Add bus nodes using VDD_MIF for Exynos4x12
  ARM: dts: exynos: Add bus nodes using VDD_INT for Exynos3250
  ARM: dts: exynos: Add DMC bus frequency for exynos3250-rinato/monk
  ARM: dts: exynos: Add DMC bus node for Exynos3250
  ARM: tegra: Enable XUSB on Nyan
  ARM: tegra: Enable XUSB on Jetson TK1
  ARM: tegra: Enable XUSB on Venice2
  ARM: tegra: Add Tegra124 XUSB controller
  ARM: tegra: Move Tegra124 to the new XUSB pad controller binding
  ARM: dts: r8a7794: Use SYSC "always-on" PM Domain
  ARM: dts: r8a7793: Use SYSC "always-on" PM Domain
  ...
2016-05-24 15:46:06 -07:00
Linus Torvalds d04f90ffec asm-generic patch for 4.7
I have only one patch for asm-generic in this release, this one is from
 James Hogan and updates the generic system call table for renameat2
 so we don't need to provide both renameat and renameat2 in newly
 added architectures.
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Merge tag 'asm-generic-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic cleanup from Arnd Bergmann:
 "I have only one patch for asm-generic in this release, this one is
  from James Hogan and updates the generic system call table for
  renameat2 so we don't need to provide both renameat and renameat2 in
  newly added architectures"

* tag 'asm-generic-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic: Drop renameat syscall from default list
2016-05-24 15:24:37 -07:00
Linus Torvalds 5d22c5ab85 A very quiet cycle for nfsd, mainly just an RDMA update from Chuck Lever.
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Merge tag 'nfsd-4.7' of git://linux-nfs.org/~bfields/linux

Pull nfsd updates from Bruce Fields:
 "A very quiet cycle for nfsd, mainly just an RDMA update from Chuck
  Lever"

* tag 'nfsd-4.7' of git://linux-nfs.org/~bfields/linux:
  sunrpc: fix stripping of padded MIC tokens
  svcrpc: autoload rdma module
  svcrdma: Generalize svc_rdma_xdr_decode_req()
  svcrdma: Eliminate code duplication in svc_rdma_recvfrom()
  svcrdma: Drain QP before freeing svcrdma_xprt
  svcrdma: Post Receives only for forward channel requests
  svcrdma: Remove superfluous line from rdma_read_chunks()
  svcrdma: svc_rdma_put_context() is invoked twice in Send error path
  svcrdma: Do not add XDR padding to xdr_buf page vector
  svcrdma: Support IPv6 with NFS/RDMA
  nfsd: handle seqid wraparound in nfsd4_preprocess_layout_stateid
  Remove unnecessary allocation
2016-05-24 14:39:20 -07:00
Linus Torvalds 0e01df100b Fix a number of bugs, most notably a potential stale data exposure
after a crash and a potential BUG_ON crash if a file has the data
 journalling flag enabled while it has dirty delayed allocation blocks
 that haven't been written yet.  Also fix a potential crash in the new
 project quota code and a maliciously corrupted file system.
 
 In addition, fix some DAX-specific bugs, including when there is a
 transient ENOSPC situation and races between writes via direct I/O and
 an mmap'ed segment that could lead to lost I/O.
 
 Finally the usual set of miscellaneous cleanups.
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Merge tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4

Pull ext4 updates from Ted Ts'o:
 "Fix a number of bugs, most notably a potential stale data exposure
  after a crash and a potential BUG_ON crash if a file has the data
  journalling flag enabled while it has dirty delayed allocation blocks
  that haven't been written yet.  Also fix a potential crash in the new
  project quota code and a maliciously corrupted file system.

  In addition, fix some DAX-specific bugs, including when there is a
  transient ENOSPC situation and races between writes via direct I/O and
  an mmap'ed segment that could lead to lost I/O.

  Finally the usual set of miscellaneous cleanups"

* tag 'ext4_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (23 commits)
  ext4: pre-zero allocated blocks for DAX IO
  ext4: refactor direct IO code
  ext4: fix race in transient ENOSPC detection
  ext4: handle transient ENOSPC properly for DAX
  dax: call get_blocks() with create == 1 for write faults to unwritten extents
  ext4: remove unmeetable inconsisteny check from ext4_find_extent()
  jbd2: remove excess descriptions for handle_s
  ext4: remove unnecessary bio get/put
  ext4: silence UBSAN in ext4_mb_init()
  ext4: address UBSAN warning in mb_find_order_for_block()
  ext4: fix oops on corrupted filesystem
  ext4: fix check of dqget() return value in ext4_ioctl_setproject()
  ext4: clean up error handling when orphan list is corrupted
  ext4: fix hang when processing corrupted orphaned inode list
  ext4: remove trailing \n from ext4_warning/ext4_error calls
  ext4: fix races between changing inode journal mode and ext4_writepages
  ext4: handle unwritten or delalloc buffers before enabling data journaling
  ext4: fix jbd2 handle extension in ext4_ext_truncate_extend_restart()
  ext4: do not ask jbd2 to write data for delalloc buffers
  jbd2: add support for avoiding data writes during transaction commits
  ...
2016-05-24 12:55:26 -07:00
Arnd Bergmann 09564b7d84 ARM: lpc32xx: fix NR_IRQS confict
With the change to sparse IRQs, the lpc32xx platform gets a warning about
conflicting macros:

In file included from arch/arm/mach-lpc32xx/irq.c:31:0:
arch/arm/mach-lpc32xx/include/mach/irqs.h:115:0: warning: "NR_IRQS" redefined
 #define NR_IRQS    96
arch/arm/include/asm/irq.h:9:0: note: this is the location of the previous definition
 #define NR_IRQS NR_IRQS_LEGACY

One such instance was in the old irq driver that is now removed by
the previous patch, but any other file including mach/irqs.h still
has the issue. Since none of them use this constant, we can just
remove the old definition.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: 8cb17b5ed0 ("irqchip: Add LPC32xx interrupt controller driver")
2016-05-24 19:32:46 +00:00
Vladimir Zapolskiy 342f3f9bf6 ARM: lpc32xx: remove legacy irq controller driver
New NXP LPC32xx irq chip driver is used instead of a legacy one.

[this also fixes a harmless build warning about the NR_IRQS redefinition]

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Sylvain Lemieux <slemieux.tyco@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2016-05-24 19:32:45 +00:00
Linus Torvalds a56f489502 spi: Updates for v4.7
Another quiet release for SPI, almost entirely driver specific changes
 with the diffstat dominated by two new drivers which are about two
 thirds of it in terms of lines of code:
 
  - New drivers for PIC32 standard and SQI controllers.
  - The Cadence driver has had runtime PM support added and quite a few
    fixes and cleanups.
  - The flash-specific accelerated path support now has a feature query
    interface.
  - The pxa2xx driver has been moved to use the core DMA mapping support.
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Merge tag 'spi-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi updates from Mark Brown:
 "Another quiet release for SPI, almost entirely driver specific changes
  with the diffstat dominated by two new drivers which are about two
  thirds of it in terms of lines of code:

   - new drivers for PIC32 standard and SQI controllers
   - the Cadence driver has had runtime PM support added and quite a few
     fixes and cleanups
   - flash-specific accelerated path support now has a feature query
     interface
   - the pxa2xx driver has been moved to use the core DMA mapping support"

* tag 'spi-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi: (48 commits)
  spi: pic32-sqi: Fix linker error, undefined reference to `bad_dma_ops'
  spi: dw-pci: Spelling s/paltforms/platforms/g
  spi: pic32-sqi: Remove pic32_sqi_setup and pic32_sqi_cleanup
  spi: Fix simple typo s/impelment/implement
  spi: rockchip: potential NULL dereference on error
  spi: zynqmp: disable clocks in error paths
  spi: Drop unnecessary dependencies on relaxed I/O accessors
  spi: qup: Add spi_master_put in remove function
  spi: qup: Handle clocks in pm_runtime suspend and resume
  spi: st-ssc4: Fix missing spi_master_put in spi_st_probe error paths
  spi: st-ssc4: Allow compile test build
  spi: omap2-mcspi: Use dma_request_chan() for requesting DMA channel
  spi: davinci: Use dma_request_chan() for requesting DMA channel
  spi: pic32: Fix checking return value of devm_ioremap_resource
  spi: spi-fsl-dspi: Update DT binding documentation
  spi: Drop duplicate code to set master->dev.parent
  spi: pic32: Set proper bits_per_word_mask
  spi: return error if kmap'd buffers passed to spi_map_buf()
  spi: core: add hook flash_read_supported to spi_master
  spi: pic32-sqi: silence array overflow warning
  ...
2016-05-24 11:12:32 -07:00
Linus Torvalds 8bc4d5f394 MTD updates for v4.7:
First cycle with Boris as NAND maintainer! Many (most) bullets stolen from him.
 
 Generic:
 
  * Migrated NAND LED trigger to be a generic MTD trigger
 
 NAND:
 
  * Introduction of the "ECC algorithm" concept, to avoid overloading the ECC
    mode field too much more
  * Replaced the nand_ecclayout infrastructure with something a little more
    flexible (finally!) and future proof
  * Rework of the OMAP GPMC and NAND drivers; the TI folks pulled some of
    this into their own tree as well
  * Prepare the sunxi NAND driver to receive DMA support
  * Handle bitflips in erased pages on GPMI revisions that do not support
    this in hardware.
 
 SPI NOR:
 
  * Start using the spi_flash_read() API for SPI drivers that support it (i.e.,
    SPI drivers with special memory-mapped flash modes)
 
 And other small scattered improvments.
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Merge tag 'for-linus-20160523' of git://git.infradead.org/linux-mtd

Pull MTD updates from Brian Norris:
 "First cycle with Boris as NAND maintainer! Many (most) bullets stolen
  from him.

  Generic:
   - Migrated NAND LED trigger to be a generic MTD trigger

  NAND:
   - Introduction of the "ECC algorithm" concept, to avoid overloading
     the ECC mode field too much more
   - Replaced the nand_ecclayout infrastructure with something a little
     more flexible (finally!) and future proof
   - Rework of the OMAP GPMC and NAND drivers; the TI folks pulled some
     of this into their own tree as well
   - Prepare the sunxi NAND driver to receive DMA support
   - Handle bitflips in erased pages on GPMI revisions that do not
     support this in hardware.

  SPI NOR:
   - Start using the spi_flash_read() API for SPI drivers that support
     it (i.e., SPI drivers with special memory-mapped flash modes)

  And other small scattered improvments"

* tag 'for-linus-20160523' of git://git.infradead.org/linux-mtd: (155 commits)
  mtd: spi-nor: support GigaDevice gd25lq64c
  mtd: nand_bch: fix spelling of "probably"
  mtd: brcmnand: respect ECC algorithm set by NAND subsystem
  gpmi-nand: Handle ECC Errors in erased pages
  Documentation: devicetree: deprecate "soft_bch" nand-ecc-mode value
  mtd: nand: add support for "nand-ecc-algo" DT property
  mtd: mtd: drop NAND_ECC_SOFT_BCH enum value
  mtd: drop support for NAND_ECC_SOFT_BCH as "soft_bch" mapping
  mtd: nand: read ECC algorithm from the new field
  mtd: nand: fsmc: validate ECC setup by checking algorithm directly
  mtd: nand: set ECC algorithm to Hamming on fallback
  staging: mt29f_spinand: set ECC algorithm explicitly
  CRIS v32: nand: set ECC algorithm explicitly
  mtd: nand: atmel: set ECC algorithm explicitly
  mtd: nand: davinci: set ECC algorithm explicitly
  mtd: nand: bf5xx: set ECC algorithm explicitly
  mtd: nand: omap2: Fix high memory dma prefetch transfer
  mtd: nand: omap2: Start dma request before enabling prefetch
  mtd: nandsim: add __init attribute
  mtd: nand: move of_get_nand_xxx() helpers into nand_base.c
  ...
2016-05-24 11:00:20 -07:00
Linus Torvalds 29567292c0 xen: bug fixes for 4.7-rc0
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Merge tag 'for-linus-4.7-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen bug fixes from David Vrabel.

* tag 'for-linus-4.7-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen: use same main loop for counting and remapping pages
  xen/events: Don't move disabled irqs
  xen/x86: actually allocate legacy interrupts on PV guests
  Xen: don't warn about 2-byte wchar_t in efi
  xen/gntdev: reduce copy batch size to 16
  xen/x86: don't lose event interrupts
2016-05-24 10:22:34 -07:00
Linus Torvalds ecaba71858 virtio: patches for 4.7
Looks like a quiet cycle for virtio.  There's a new inorder option for the
 ringtest tool, and a bugfix for balloon for ppc platforms when using virtio 1
 mode.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost

Pull virtio updates from Michael Tsirkin:
 "Looks like a quiet cycle for virtio.  There's a new inorder option for
  the ringtest tool, and a bugfix for balloon for ppc platforms when
  using virtio 1 mode"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  ringtest: pass buf != NULL
  virtio_balloon: fix PFN format for virtio-1
  virtio: add inorder option
2016-05-24 09:46:45 -07:00
Linus Torvalds e989cc5646 nios2 update for v4.7
nios2: Add order-only DTC dependency to %.dtb target
 nios2: Fix libgcc location detection
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Merge tag 'nios2-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2

Pull nios2 update from Ley Foon Tan:
 - add order-only DTC dependency to %.dtb target
 - fix libgcc location detection

* tag 'nios2-v4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
  nios2: Add order-only DTC dependency to %.dtb target
  nios2: Fix libgcc location detection
2016-05-24 09:41:46 -07:00
Linus Torvalds 36b150bbcc Microblaze patches for 4.7-rc1
- Wire-up new syscalls
 - Fix link error
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Merge tag 'microblaze-4.7-rc1' of git://git.monstr.eu/linux-2.6-microblaze

Pull Microblaze updates from Michal Simek:

 - Wire-up new syscalls

 - Fix link error

* tag 'microblaze-4.7-rc1' of git://git.monstr.eu/linux-2.6-microblaze:
  microblaze: pci: export isa_io_base to fix link errors
  microblaze: Wire up userfaultfd, membarrier, mlock2 syscalls
2016-05-24 09:19:38 -07:00
Juergen Gross dd14be92fb xen: use same main loop for counting and remapping pages
Instead of having two functions for cycling through the E820 map in
order to count to be remapped pages and remap them later, just use one
function with a caller supplied sub-function called for each region to
be processed. This eliminates the possibility of a mismatch between
both loops which showed up in certain configurations.

Suggested-by: Ed Swierk <eswierk@skyportsystems.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-05-24 12:59:04 +01:00
Ross Lagerwall f0f393877c xen/events: Don't move disabled irqs
Commit ff1e22e7a6 ("xen/events: Mask a moving irq") open-coded
irq_move_irq() but left out checking if the IRQ is disabled. This broke
resuming from suspend since it tries to move a (disabled) irq without
holding the IRQ's desc->lock. Fix it by adding in a check for disabled
IRQs.

The resulting stacktrace was:
kernel BUG at /build/linux-UbQGH5/linux-4.4.0/kernel/irq/migration.c:31!
invalid opcode: 0000 [#1] SMP
Modules linked in: xenfs xen_privcmd ...
CPU: 0 PID: 9 Comm: migration/0 Not tainted 4.4.0-22-generic #39-Ubuntu
Hardware name: Xen HVM domU, BIOS 4.6.1-xs125180 05/04/2016
task: ffff88003d75ee00 ti: ffff88003d7bc000 task.ti: ffff88003d7bc000
RIP: 0010:[<ffffffff810e26e2>]  [<ffffffff810e26e2>] irq_move_masked_irq+0xd2/0xe0
RSP: 0018:ffff88003d7bfc50  EFLAGS: 00010046
RAX: 0000000000000000 RBX: ffff88003d40ba00 RCX: 0000000000000001
RDX: 0000000000000001 RSI: 0000000000000100 RDI: ffff88003d40bad8
RBP: ffff88003d7bfc68 R08: 0000000000000000 R09: ffff88003d000000
R10: 0000000000000000 R11: 000000000000023c R12: ffff88003d40bad0
R13: ffffffff81f3a4a0 R14: 0000000000000010 R15: 00000000ffffffff
FS:  0000000000000000(0000) GS:ffff88003da00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd4264de624 CR3: 0000000037922000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffff88003d40ba38 0000000000000024 0000000000000000 ffff88003d7bfca0
 ffffffff814c8d92 00000010813ef89d 00000000805ea732 0000000000000009
 0000000000000024 ffff88003cc39b80 ffff88003d7bfce0 ffffffff814c8f66
Call Trace:
 [<ffffffff814c8d92>] eoi_pirq+0xb2/0xf0
 [<ffffffff814c8f66>] __startup_pirq+0xe6/0x150
 [<ffffffff814ca659>] xen_irq_resume+0x319/0x360
 [<ffffffff814c7e75>] xen_suspend+0xb5/0x180
 [<ffffffff81120155>] multi_cpu_stop+0xb5/0xe0
 [<ffffffff811200a0>] ? cpu_stop_queue_work+0x80/0x80
 [<ffffffff811203d0>] cpu_stopper_thread+0xb0/0x140
 [<ffffffff810a94e6>] ? finish_task_switch+0x76/0x220
 [<ffffffff810ca731>] ? __raw_callee_save___pv_queued_spin_unlock+0x11/0x20
 [<ffffffff810a3935>] smpboot_thread_fn+0x105/0x160
 [<ffffffff810a3830>] ? sort_range+0x30/0x30
 [<ffffffff810a0588>] kthread+0xd8/0xf0
 [<ffffffff810a04b0>] ? kthread_create_on_node+0x1e0/0x1e0
 [<ffffffff8182568f>] ret_from_fork+0x3f/0x70
 [<ffffffff810a04b0>] ? kthread_create_on_node+0x1e0/0x1e0

Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-05-24 12:58:54 +01:00
Stefano Stabellini 702f926067 xen/x86: actually allocate legacy interrupts on PV guests
b4ff8389ed is incomplete: relies on nr_legacy_irqs() to get the number
of legacy interrupts when actually nr_legacy_irqs() returns 0 after
probe_8259A(). Use NR_IRQS_LEGACY instead.

Signed-off-by: Stefano Stabellini <sstabellini@kernel.org>
CC: stable@vger.kernel.org
2016-05-24 12:58:19 +01:00