Commit Graph

634383 Commits

Author SHA1 Message Date
Mohamad Haj Yahia 04c0c1ab38 net/mlx5: PCI error recovery health care simulation
In case that the kernel PCI error handlers are not called, we will
trigger our own recovery flow.

The health work will give priority to the kernel pci error handlers to
recover the PCI by waiting for a small period, if the pci error handlers
are not triggered the manual recovery flow will be executed.

We don't save pci state in case of manual recovery because it will ruin the
pci configuration space and we will lose dma sync.

Fixes: 89d44f0a6c ('net/mlx5_core: Add pci error handlers to mlx5_core driver')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 12:00:39 -04:00
Mohamad Haj Yahia 05ac2c0b74 net/mlx5: Fix race between PCI error handlers and health work
Currently there is a race between the health care work and the kernel
pci error handlers because both of them detect the error, the first one
to be called will do the error handling.
There is a chance that health care will disable the pci after resuming
pci slot.
Also create a separate WQ because now we will have two types of health
works, one for the error detection and one for the recovery.

Fixes: 89d44f0a6c ('net/mlx5_core: Add pci error handlers to mlx5_core driver')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 12:00:39 -04:00
Mohamad Haj Yahia 2241007b3d net/mlx5: Clear health sick bit when starting health poll
The health sick status should be cleared when we start the health poll.
This is crucial for driver reload (unload + load) in order to behave
right in case of health issue.

Fixes: fd76ee4da5 ('net/mlx5_core: Fix internal error detection conditions')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 12:00:39 -04:00
Mohamad Haj Yahia 247f139cda net/mlx5: Change the acl enable prototype to return status
The Ingress/Egress ACL enable function may fail and it should return
status to its caller to avoid NULL pointer dereference.

Fixes: f942380c12 ('net/mlx5: E-Switch, Vport ingress/egress ACLs rules for spoofchk')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 12:00:39 -04:00
Mohamad Haj Yahia 5e1e93c704 net/mlx5e: Unregister netdev before detaching it
Detaching the netdev before unregistering it cause some netdev cleanup
ndos to fail because they check presence of the netdev, so we need to
unregister the netdev first.

Fixes: 26e59d8077 ('net/mlx5e: Implement mlx5e interface attach/detach callbacks')
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 12:00:39 -04:00
Saeed Mahameed 2b02955666 net/mlx5e: Choose best nearest LRO timeout
Instead of predicting the index of the wanted LRO timeout value from
hardware capabilities, look for the nearest LRO timeout value.

Fixes: 5c50368f38 ('net/mlx5e: Light-weight netdev open/stop')
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Mohamad Haj Yahia <mohamad@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 12:00:39 -04:00
Paul Blakey e83d6955fe net/mlx5: Correctly initialize last use of flow counters
Currently, last use timestamp is initialized to zero.
This is not the expected value by higher layers such as
when we do TC action offloading. To fix that, set it to
the current time, e.g when the counter/rule is offloaded.
This is the same behaviour of non-offloaded TC actions.

Fixes: 43a335e055 ('mlx5_core: Flow counters infrastructure')
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 12:00:39 -04:00
Paul Blakey 32dba76a7a net/mlx5: Fix autogroups groups num not decreasing
Autogroups groups num is increased when creating a new flow group,
but is never decreased.

Now decreasing it when deleting a flow group.

Fixes: f0d22d1874 ('net/mlx5_core: Introduce flow steering autogrouped flow table')
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 12:00:39 -04:00
Paul Blakey eccec8da3b net/mlx5: Keep autogroups list ordered
Finding a new autogroup range is done by going over a group list
sorted by each group start index. The search is stopped after finding
the first free range. Adding the newly created group to the list is
wrongly added to the end of the list regardless of its start index as
the parameter of where to insert it is ignored.

This commit makes sure to use that unused parameter to insert
it where requested.

Fixes: f0d22d1874 ('net/mlx5_core: Introduce flow steering autogrouped flow table')
Signed-off-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 12:00:39 -04:00
Daniel Jurgens bba1574c2f net/mlx5: Always Query HCA caps after setting them
Always query the HCA caps after setting them to update the capablities
data structures. Not doing so results in incorrect capabilities being
reported including max_dc, max_qp and several others.

Fixes: 59211bd3b6 ("net/mlx5: Split the load/unload flow into hardware
and software flows")
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 12:00:39 -04:00
Daniel Jurgens b47bd6ea40 {net, ib}/mlx5: Make cache line size determination at runtime.
ARM 64B cache line systems have L1_CACHE_BYTES set to 128.
cache_line_size() will return the correct size.

Fixes: cf50b5efa2fe('net/mlx5_core/ib: New device capabilities
handling.')
Signed-off-by: Daniel Jurgens <danielj@mellanox.com>

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 12:00:39 -04:00
Marcelo Ricardo Leitner bf911e985d sctp: validate chunk len before actually using it
Andrey Konovalov reported that KASAN detected that SCTP was using a slab
beyond the boundaries. It was caused because when handling out of the
blue packets in function sctp_sf_ootb() it was checking the chunk len
only after already processing the first chunk, validating only for the
2nd and subsequent ones.

The fix is to just move the check upwards so it's also validated for the
1st chunk.

Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-29 12:00:10 -04:00
Thomas Gleixner 1e90a13d0c x86/smpboot: Init apic mapping before usage
The recent changes, which forced the registration of the boot cpu on UP
systems, which do not have ACPI tables, have been fixed for systems w/o
local APIC, but left a wreckage for systems which have neither ACPI nor
mptables, but the CPU has an APIC, e.g. virtualbox.

The boot process crashes in prefill_possible_map() as it wants to register
the boot cpu, which needs to access the local apic, but the local APIC is
not yet mapped.

There is no reason why init_apic_mapping() can't be invoked before
prefill_possible_map(). So instead of playing another silly early mapping
game, as the ACPI/mptables code does, we just move init_apic_mapping()
before the call to prefill_possible_map().

In hindsight, I should have noticed that combination earlier.

Sorry for the churn (also in stable)!

Fixes: ff8560512b ("x86/boot/smp: Don't try to poke disabled/non-existent APIC")
Reported-and-debugged-by: Michal Necasek <michal.necasek@oracle.com>
Reported-and-tested-by: Wolfgang Bauer <wbauer@tmo.at>
Cc: prarit@redhat.com
Cc: ville.syrjala@linux.intel.com
Cc: michael.thayer@oracle.com
Cc: knut.osmundsen@oracle.com
Cc: frank.mehnert@oracle.com
Cc: Borislav Petkov <bp@alien8.de>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1610282114380.5053@nanos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
2016-10-29 14:00:46 +02:00
NeilBrown 1217e1d199 md: be careful not lot leak internal curr_resync value into metadata. -- (all)
mddev->curr_resync usually records where the current resync is up to,
but during the starting phase it has some "magic" values.

 1 - means that the array is trying to start a resync, but has yielded
     to another array which shares physical devices, and also needs to
     start a resync
 2 - means the array is trying to start resync, but has found another
     array which shares physical devices and has already started resync.

 3 - means that resync has commensed, but it is possible that nothing
     has actually been resynced yet.

It is important that this value not be visible to user-space and
particularly that it doesn't get written to the metadata, as the
resync or recovery checkpoint.  In part, this is because it may be
slightly higher than the correct value, though this is very rare.
In part, because it is not a multiple of 4K, and some devices only
support 4K aligned accesses.

There are two places where this value is propagates into either
->curr_resync_completed or ->recovery_cp or ->recovery_offset.
These currently avoid the propagation of values 1 and 3, but will
allow 3 to leak through.

Change them to only propagate the value if it is > 3.

As this can cause an array to fail, the patch is suitable for -stable.

Cc: stable@vger.kernel.org (v3.7+)
Reported-by: Viswesh <viswesh.vichu@gmail.com>
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
2016-10-28 22:04:05 -07:00
Tomasz Majchrzak 7449f699b2 raid1: handle read error also in readonly mode
If write is the first operation on a disk and it happens not to be
aligned to page size, block layer sends read request first. If read
operation fails, the disk is set as failed as no attempt to fix the
error is made because array is in auto-readonly mode. Similarily, the
disk is set as failed for read-only array.

Take the same approach as in raid10. Don't fail the disk if array is in
readonly or auto-readonly mode. Try to redirect the request first and if
unsuccessful, return a read error.

Signed-off-by: Tomasz Majchrzak <tomasz.majchrzak@intel.com>
Signed-off-by: Shaohua Li <shli@fb.com>
2016-10-28 22:04:04 -07:00
Shaohua Li 9a8b27fac5 raid5-cache: correct condition for empty metadata write
As long as we recover one metadata block, we should write the empty metadata
write. The original code could make recovery corrupted if only one meta is
valid.

Reported-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn>
Signed-off-by: Shaohua Li <shli@fb.com>
2016-10-28 22:04:03 -07:00
Brian Norris 0e2ce9d3fc Three simple fixes:
- the first one is fixing a non-critical bug in the gpmi driver
 - the second one is fixing a bug in the 'automatic NAND timings
   selection' feature introduced in 4.9-rc1
 - the last one is fixing a false positive uninitialized-var warning
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Merge tag 'nand/fixes-for-4.9-rc3' of github.com:linux-nand/linux

From Boris:
"""
Three simple fixes:

- the first one is fixing a non-critical bug in the gpmi driver
- the second one is fixing a bug in the 'automatic NAND timings
  selection' feature introduced in 4.9-rc1
- the last one is fixing a false positive uninitialized-var warning
"""

Acked-by: Marek Vasut <marex@denx.de>
2016-10-28 19:05:25 -07:00
Linus Torvalds c067affcd3 ACPI fixes for v4.9-rc3
Specifics:
 
  - Fix three ACPICA issues related to the interpreter locking and
    introduced by recent changes in that area (Lv Zheng).
 
  - Fix a PCI IRQ management regression introduced during the 4.7
    cycle and related to the configuration of shared IRQs on systems
    with an ISA bus (Sinan Kaya).
 
  - Fix up a return value of one function in the APEI code (Punit
    Agrawal).
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Merge tag 'acpi-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull ACPI fixes from Rafael Wysocki:
 "These fix recent ACPICA regressions, an older PCI IRQ management
  regression, and an incorrect return value of a function in the APEI
  code.

  Specifics:

   - Fix three ACPICA issues related to the interpreter locking and
     introduced by recent changes in that area (Lv Zheng).

   - Fix a PCI IRQ management regression introduced during the 4.7 cycle
     and related to the configuration of shared IRQs on systems with an
     ISA bus (Sinan Kaya).

   - Fix up a return value of one function in the APEI code (Punit
     Agrawal)"

* tag 'acpi-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPICA: Dispatcher: Fix interpreter locking around acpi_ev_initialize_region()
  ACPICA: Dispatcher: Fix an unbalanced lock exit path in acpi_ds_auto_serialize_method()
  ACPICA: Dispatcher: Fix order issue of method termination
  ACPI / APEI: Fix incorrect return value of ghes_proc()
  ACPI/PCI: pci_link: Include PIRQ_PENALTY_PCI_USING for ISA IRQs
  ACPI/PCI: pci_link: penalize SCI correctly
  ACPI/PCI/IRQ: assign ISA IRQ directly during early boot stages
2016-10-28 18:34:19 -07:00
Linus Torvalds b546e0c289 Power management fixes for v4.9-rc3
Specifics:
 
  - Fix a missing KERN_CONT in a system suspend message by converting
    the affected code to using pr_info() and pr_cont() instead of the
    "raw" printk() (Jon Hunter).
 
  - Make intel_pstate set the CPU P-state from its .set_policy()
    callback when the scaling_governor sysfs attribute is set to
    "performance" so that it interacts with NOHZ_FULL more
    predictably which was the case before 4.7 (Rafael Wysocki).
 
  - Make intel_pstate always request the maximum allowed P-state when
    the scaling_governor sysfs attribute is set to "performance" to
    prevent it from effectively ingoring that setting is some
    situations (Rafael Wysocki).
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Merge tag 'pm-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix two intel_pstate issues related to the way it works when the
  scaling_governor sysfs attribute is set to "performance" and fix up
  messages in the system suspend core code.

  Specifics:

   - Fix a missing KERN_CONT in a system suspend message by converting
     the affected code to using pr_info() and pr_cont() instead of the
     "raw" printk() (Jon Hunter).

   - Make intel_pstate set the CPU P-state from its .set_policy()
     callback when the scaling_governor sysfs attribute is set to
     "performance" so that it interacts with NOHZ_FULL more predictably
     which was the case before 4.7 (Rafael Wysocki).

   - Make intel_pstate always request the maximum allowed P-state when
     the scaling_governor sysfs attribute is set to "performance" to
     prevent it from effectively ingoring that setting is some
     situations (Rafael Wysocki)"

* tag 'pm-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: intel_pstate: Always set max P-state in performance mode
  PM / suspend: Fix missing KERN_CONT for suspend message
  cpufreq: intel_pstate: Set P-state upfront in performance mode
2016-10-28 18:29:13 -07:00
Linus Torvalds 1308fd75e5 ARC updates for 4.9-rc4
- supporting IDU intc for UP builds
 
 - Support gz, lzma compressed uImage [Daniel Mentz]
 
 - Adjust /proc/cpuinfo for non-continuous cpu ids [Noam Camus]
 
 - syscall for userspace cmpxchg assist for configs lacking hardware atomics
 
 - rework of boot log printing mainly for identifying older arc700 cores
 
 - retiring some old code, build toggles
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Merge tag 'arc-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC updates from Vineet Gupta:

 - support IDU intc for UP builds

 - support gz, lzma compressed uImage [Daniel Mentz]

 - adjust /proc/cpuinfo for non-continuous cpu ids [Noam Camus]

 - syscall for userspace cmpxchg assist for configs lacking hardware atomics

 - rework of boot log printing mainly for identifying older arc700 cores

 - retiring some old code, build toggles

* tag 'arc-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: module: print pretty section names
  ARC: module: elide loop to save reference to .eh_frame
  ARC: mm: retire ARC_DBG_TLB_MISS_COUNT...
  ARC: build: retire old toggles
  ARC: boot log: refactor cpu name/release printing
  ARC: boot log: remove awkward space comma from MMU line
  ARC: boot log: don't assume SWAPE instruction support
  ARC: boot log: refactor printing abt features not captured in BCRs
  ARCv2: boot log: print IOC exists as well as enabled status
  ARCv2: IOC: use @ioc_enable not @ioc_exist where intended
  ARC: syscall for userspace cmpxchg assist
  ARC: fix build warning in elf.h
  ARC: Adjust cpuinfo for non-continuous cpu ids
  ARC: [build] Support gz, lzma compressed uImage
  ARCv2: intc: untangle SMP, MCIP and IDU
2016-10-28 17:02:58 -07:00
Rafael J. Wysocki 21e2d9d529 Merge branches 'acpica-fixes', 'acpi-pci-fixes' and 'acpi-apei-fixes'
* acpica-fixes:
  ACPICA: Dispatcher: Fix interpreter locking around acpi_ev_initialize_region()
  ACPICA: Dispatcher: Fix an unbalanced lock exit path in acpi_ds_auto_serialize_method()
  ACPICA: Dispatcher: Fix order issue of method termination

* acpi-pci-fixes:
  ACPI/PCI: pci_link: Include PIRQ_PENALTY_PCI_USING for ISA IRQs
  ACPI/PCI: pci_link: penalize SCI correctly
  ACPI/PCI/IRQ: assign ISA IRQ directly during early boot stages

* acpi-apei-fixes:
  ACPI / APEI: Fix incorrect return value of ghes_proc()
2016-10-29 01:58:03 +02:00
Lv Zheng 8633db6b02 ACPICA: Dispatcher: Fix interpreter locking around acpi_ev_initialize_region()
In the code path of acpi_ev_initialize_region(), there is namespace
modification code unlocked. This patch tunes the code to make sure
such modification are always locked.

Fixes: 74f51b80a0 (ACPICA: Namespace: Fix dynamic table loading issues)
Tested-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-10-29 01:57:43 +02:00
Lv Zheng 8121aa26e3 ACPICA: Dispatcher: Fix an unbalanced lock exit path in acpi_ds_auto_serialize_method()
There is a lock unbalanced exit path in acpi_ds_initialize_method(),
this patch corrects it.

Fixes: 441ad11d07 (ACPICA: Dispatcher: Fix a mutex issue for method auto serialization)
Tested-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-10-29 01:57:43 +02:00
Lv Zheng 25ccd2429f ACPICA: Dispatcher: Fix order issue of method termination
The last step of the method termination should be the end of the method
serialization. Otherwise, the steps happening after it will face the race
issues that cannot be protected by the method serialization mechanism.

This patch fixes this issue by moving the per-method-object deletion code
prior than the end of the method serialization. Otherwise, the possible
race issues may result in AE_ALREADY_EXISTS error in a parallel
environment.

Fixes: 74f51b80a0 (ACPICA: Namespace: Fix dynamic table loading issues)
Reported-and-tested-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Lv Zheng <lv.zheng@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2016-10-29 01:57:43 +02:00
Linus Torvalds 6fcc8cea82 powerpc fixes for 4.9 #4
Fixes marked for stable:
  - Convert cmp to cmpd in idle enter sequence (Segher Boessenkool)
  - cxl: Fix leaking pid refs in some error paths (Vaibhav Jain)
  - Re-fix race condition between going idle and entering guest (Paul Mackerras)
  - Fix race condition in setting lock bit in idle/wakeup code (Paul Mackerras)
  - radix: Use tlbiel only if we ever ran on the current cpu (Aneesh Kumar K.V)
  - relocation, register save fixes for system reset interrupt (Nicholas Piggin)
 
 Fixes for code merged this cycle:
  - Fix CONFIG_ALIVEC typo in restore_tm_state() (Valentin Rothberg)
  - KVM: PPC: Book3S HV: Fix build error when SMP=n (Michael Ellerman)
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Merge tag 'powerpc-4.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "Fixes marked for stable:
   - Convert cmp to cmpd in idle enter sequence (Segher Boessenkool)
   - cxl: Fix leaking pid refs in some error paths (Vaibhav Jain)
   - Re-fix race condition between going idle and entering guest (Paul Mackerras)
   - Fix race condition in setting lock bit in idle/wakeup code (Paul Mackerras)
   - radix: Use tlbiel only if we ever ran on the current cpu (Aneesh Kumar K.V)
   - relocation, register save fixes for system reset interrupt (Nicholas Piggin)

  Fixes for code merged this cycle:
   - Fix CONFIG_ALIVEC typo in restore_tm_state() (Valentin Rothberg)
   - KVM: PPC: Book3S HV: Fix build error when SMP=n (Michael Ellerman)"

* tag 'powerpc-4.9-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/64s: relocation, register save fixes for system reset interrupt
  powerpc/mm/radix: Use tlbiel only if we ever ran on the current cpu
  powerpc/process: Fix CONFIG_ALIVEC typo in restore_tm_state()
  powerpc/64: Fix race condition in setting lock bit in idle/wakeup code
  powerpc/64: Re-fix race condition between going idle and entering guest
  cxl: Fix leaking pid refs in some error paths
  powerpc: Convert cmp to cmpd in idle enter sequence
  KVM: PPC: Book3S HV: Fix build error when SMP=n
2016-10-28 16:52:28 -07:00
Rafael J. Wysocki 8b2ada27dc Merge branches 'pm-cpufreq-fixes' and 'pm-sleep-fixes'
* pm-cpufreq-fixes:
  cpufreq: intel_pstate: Always set max P-state in performance mode
  cpufreq: intel_pstate: Set P-state upfront in performance mode

* pm-sleep-fixes:
  PM / suspend: Fix missing KERN_CONT for suspend message
2016-10-29 01:29:17 +02:00
Linus Torvalds b49c3170bf Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
 "Misc kernel fixes: a virtualization environment related fix, an uncore
  PMU driver removal handling fix, a PowerPC fix and new events for
  Knights Landing"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Honour the CPUID for number of fixed counters in hypervisors
  perf/powerpc: Don't call perf_event_disable() from atomic context
  perf/core: Protect PMU device removal with a 'pmu_bus_running' check, to fix CONFIG_DEBUG_TEST_DRIVER_REMOVE=y kernel panic
  perf/x86/intel/cstate: Add C-state residency events for Knights Landing
2016-10-28 16:27:16 -07:00
Jeff Layton 18e601d6ad sunrpc: fix some missing rq_rbuffer assignments
We've been seeing some crashes in testing that look like this:

BUG: unable to handle kernel NULL pointer dereference at           (null)
IP: [<ffffffff8135ce99>] memcpy_orig+0x29/0x110
PGD 212ca2067 PUD 212ca3067 PMD 0
Oops: 0002 [#1] SMP
Modules linked in: rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache ppdev parport_pc i2c_piix4 sg parport i2c_core virtio_balloon pcspkr acpi_cpufreq nfsd auth_rpcgss nfs_acl lockd grace sunrpc ip_tables xfs libcrc32c sd_mod ata_generic pata_acpi virtio_scsi 8139too ata_piix libata 8139cp mii virtio_pci floppy virtio_ring serio_raw virtio
CPU: 1 PID: 1540 Comm: nfsd Not tainted 4.9.0-rc1 #39
Hardware name: Red Hat KVM, BIOS 0.5.1 01/01/2007
task: ffff88020d7ed200 task.stack: ffff880211838000
RIP: 0010:[<ffffffff8135ce99>]  [<ffffffff8135ce99>] memcpy_orig+0x29/0x110
RSP: 0018:ffff88021183bdd0  EFLAGS: 00010206
RAX: 0000000000000000 RBX: ffff88020d7fa000 RCX: 000000f400000000
RDX: 0000000000000014 RSI: ffff880212927020 RDI: 0000000000000000
RBP: ffff88021183be30 R08: 01000000ef896996 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff880211704ca8
R13: ffff88021473f000 R14: 00000000ef896996 R15: ffff880211704800
FS:  0000000000000000(0000) GS:ffff88021fc80000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000212ca1000 CR4: 00000000000006e0
Stack:
 ffffffffa01ea087 ffffffff63400001 ffff880215145e00 ffff880211bacd00
 ffff88021473f2b8 0000000000000004 00000000d0679d67 ffff880211bacd00
 ffff88020d7fa000 ffff88021473f000 0000000000000000 ffff88020d7faa30
Call Trace:
 [<ffffffffa01ea087>] ? svc_tcp_recvfrom+0x5a7/0x790 [sunrpc]
 [<ffffffffa01f84d8>] svc_recv+0xad8/0xbd0 [sunrpc]
 [<ffffffffa0262d5e>] nfsd+0xde/0x160 [nfsd]
 [<ffffffffa0262c80>] ? nfsd_destroy+0x60/0x60 [nfsd]
 [<ffffffff810a9418>] kthread+0xd8/0xf0
 [<ffffffff816dbdbf>] ret_from_fork+0x1f/0x40
 [<ffffffff810a9340>] ? kthread_park+0x60/0x60
Code: 00 00 48 89 f8 48 83 fa 20 72 7e 40 38 fe 7c 35 48 83 ea 20 48 83 ea 20 4c 8b 06 4c 8b 4e 08 4c 8b 56 10 4c 8b 5e 18 48 8d 76 20 <4c> 89 07 4c 89 4f 08 4c 89 57 10 4c 89 5f 18 48 8d 7f 20 73 d4
RIP  [<ffffffff8135ce99>] memcpy_orig+0x29/0x110
 RSP <ffff88021183bdd0>
CR2: 0000000000000000

Both Bruce and Eryu ran a bisect here and found that the problematic
patch was 68778945e4 (SUNRPC: Separate buffer pointers for RPC Call and
Reply messages).

That patch changed rpc_xdr_encode to use a new rq_rbuffer pointer to
set up the receive buffer, but didn't change all of the necessary
codepaths to set it properly. In particular the backchannel setup was
missing.

We need to set rq_rbuffer whenever rq_buffer is set. Ensure that it is.

Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
Reported-by: Eryu Guan <guaneryu@gmail.com>
Tested-by: Eryu Guan <guaneryu@gmail.com>
Fixes: 68778945e4 "SUNRPC: Separate buffer pointers..."
Reported-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
2016-10-28 16:57:33 -04:00
Linus Torvalds ed99d3673e Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
 "A build fix, a NULL de-reference found by static analysis, a misuse of
  the percpu_ref_exit() (tagged for -stable), and notification of failed
  attempts to clear media errors.

  These patches have received a build success notification from the
  0day- kbuild-robot and appeared in next-20161028"

* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
  device-dax: fix percpu_ref_exit ordering
  nvdimm: make CONFIG_NVDIMM_DAX 'bool'
  pmem: report error on clear poison failure
  libnvdimm, namespace: potential NULL deref on allocation error
2016-10-28 11:47:45 -07:00
Linus Torvalds b92d9648ed arm64 fixes:
- Couple of NUMA fixes
 - Thinko in __page_to_voff
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Will Deacon:
 "Three arm64 fixes for -rc3.  They're all pretty straightforward: a
  couple of NUMA issues from the Huawei folks and a thinko in
  __page_to_voff that seems to be benign, but is certainly better off
  fixed.

  Summary:
   - couple of NUMA fixes
   - thinko in __page_to_voff"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: mm: fix __page_to_voff definition
  arm64/numa: fix incorrect log for memory-less node
  arm64/numa: fix pcpu_cpu_distance() to get correct CPU proximity
2016-10-28 11:31:06 -07:00
Linus Torvalds c38c04c630 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: three build fixes, an unwinder fix and a microcode loader
  fix"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/microcode/AMD: Fix more fallout from CONFIG_RANDOMIZE_MEMORY=y
  x86: Fix export for mcount and __fentry__
  x86/quirks: Hide maybe-uninitialized warning
  x86/build: Fix build with older GCC versions
  x86/unwind: Fix empty stack dereference in guess unwinder
2016-10-28 11:28:14 -07:00
Linus Torvalds a8006bd915 Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Ingo Molnar:
 "Fix four timer locking races: two were noticed by Linus while
  reviewing the code while chasing for a corruption bug, and two
  from fixing spurious USB timeouts"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  timers: Prevent base clock corruption when forwarding
  timers: Prevent base clock rewind when forwarding clock
  timers: Lock base for same bucket optimization
  timers: Plug locking race vs. timer migration
2016-10-28 11:26:01 -07:00
David S. Miller c2e169be8c Merge branch 'mlxsw-fixes'
Jiri Pirko says:

====================
mlxsw: Couple of fixes

Couple of LPM tree management fixes.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-28 13:43:56 -04:00
Jiri Pirko 8b99becdc8 mlxsw: spectrum_router: Compare only trees which are in use during tree get
Only trees which are in use should be compared to requested prefix usage.

Fixes: 53342023ee ("mlxsw: spectrum_router: Implement LPM trees management")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-28 13:43:56 -04:00
Jiri Pirko 2083d36790 mlxsw: spectrum_router: Save requested prefix bitlist when creating tree
Currently, the prefix bitlist is not saved for LPM trees, causing the
compare to always fail which causes the tree to be destroyed and created
for every inserted and removed FIB entry. So fix this by saving
the bitlist as it should have been done from the very beginning.

Fixes: 53342023ee ("mlxsw: spectrum_router: Implement LPM trees management")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-28 13:43:56 -04:00
H. Nikolaus Schaller ba14fa1a57 regulator: core: silence warning: "VDD1: ramp_delay not set"
commit 73e705bf81 ("regulator: core: Add set_voltage_time op")

introduced a new rdev_warn() if the ramp_delay is 0.

Apparently, on omap3/twl4030 platforms with dynamic voltage
management this results in non-ending spurious messages like

[  511.143066] VDD1: ramp_delay not set
[  511.662322] VDD1: ramp_delay not set
[  513.903625] VDD1: ramp_delay not set
[  514.222198] VDD1: ramp_delay not set
[  517.062835] VDD1: ramp_delay not set
[  517.382568] VDD1: ramp_delay not set
[  520.142791] VDD1: ramp_delay not set
[  520.502593] VDD1: ramp_delay not set
[  523.062896] VDD1: ramp_delay not set
[  523.362701] VDD1: ramp_delay not set
[  526.143035] VDD1: ramp_delay not set

I have observed this on GTA04 while it is reported to occur on
N900 as well: https://bugzilla.kernel.org/show_bug.cgi?id=178371

This patch makes the warning appear only in debugging mode.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-10-28 18:22:40 +01:00
Charles Keepax 72193a953a regmap: Rename ret variable in regmap_read_poll_timeout
As almost all of the callers of the regmap_read_poll_timeout macro
will include a local ret variable we will always get a Sparse warning
about the duplication of the ret variable:

warning: symbol 'ret' shadows an earlier one

Simply rename the ret variable in the marco to pollret to make this
significantly less likely to happen.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
2016-10-28 18:19:24 +01:00
Linus Torvalds 965c4b7e1a Merge branches 'core-urgent-for-linus', 'irq-urgent-for-linus' and 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool, irq and scheduler fixes from Ingo Molnar:
 "One more objtool fixlet for GCC6 code generation patterns, an irq
  DocBook fix and an unused variable warning fix in the scheduler"

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  objtool: Fix rare switch jump table pattern detection

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  doc: Add missing parameter for msi_setup

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/fair: Remove unused but set variable 'rq'
2016-10-28 10:12:27 -07:00
Vineet Gupta b75dcd9c7d ARC: module: print pretty section names
Now that we have referece to section name string table in
apply_relocate_add(), use it to

 - print the name of section being relocated
 - print symbol with NULL name (since it refers to a section)

before

| Section to fixup 7000a060
| =========================================================
| rela->r_off | rela->addend | sym->st_value | ADDR | VALUE
| =========================================================
|	1c		0		7000e000  7000a07c 7000e000 []
|	40		0		7000a000  7000a0a0 7000a000 []

after

| Section to fixup .eh_frame @7000a060
| =========================================================
| r_off	r_add	st_value ADDRESS  VALUE
| =========================================================
|    1c	0	7000e000 7000a07c 7000e000 [.init.text]
|    40	0	7000a000 7000a0a0 7000a000 [.exit.text]

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-10-28 10:10:29 -07:00
Vineet Gupta d65283f7b6 ARC: module: elide loop to save reference to .eh_frame
The loop was really needed in .debug_frame regime where wanted make it
as SH_ALLOC so that apply_relocate_add() would process it. That's not
needed for .eh_frame, so we check this in apply_relocate_add() which
gets called for each section.

Note that we need to save reference to "section name strings" section in
module_frob_arch_sections() since apply_relocate_add() doesn't get that

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-10-28 10:10:28 -07:00
Vineet Gupta f644e36888 ARC: mm: retire ARC_DBG_TLB_MISS_COUNT...
... given that we have perf counters abel to do the same thing non
intrusively

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-10-28 10:10:28 -07:00
Vineet Gupta c300547588 ARC: build: retire old toggles
These are really ancient toggles and tools no longer require them to be
passed. This paves way for deprecating them in long run.

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-10-28 10:10:27 -07:00
Vineet Gupta d975cbc8ac ARC: boot log: refactor cpu name/release printing
The motivation is to identify ARC750 vs. ARC770 (we currently print
generic "ARC700").

A given ARC700 release could be 750 or 770, with same ARCNUM (or family
identifier which is unfortunate). The existing arc_cpu_tbl[] kept a single
concatenated string for core name and release which thus doesn't work
for 750 vs. 770 identification.

So split this into 2 tables, one with core names and other with release.
And while we are at it, get rid of the range checking for family numbers.
We just document the known to exist cores running Linux and ditch
others.

With this in place, we add detection of ARC750 which is
 - cores 0x33 and before
 - cores 0x34 and later with MMUv2

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-10-28 10:09:07 -07:00
Vineet Gupta d7c46114e3 ARC: boot log: remove awkward space comma from MMU line
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-10-28 10:09:06 -07:00
Vineet Gupta a024fd9bc4 ARC: boot log: don't assume SWAPE instruction support
This came to light when helping a customer with oldish ARC750 core who
were getting instruction errors because of lack of SWAPE but boot log
was incorrectly printing it as being present

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-10-28 10:09:06 -07:00
Vineet Gupta 73e284d257 ARC: boot log: refactor printing abt features not captured in BCRs
On older arc700 cores, some of the features configured were not present
in Build config registers. To print about them at boot, we just use the
Kconfig option i.e. whether linux is built to use them or not.
So yes this seems bogus, but what else can be done. Moreover if linux is
booting with these enabled, then the Kconfig info is a good indicator
anyways.

Over time these "hacks" accumulated in read_arc_build_cfg_regs() as well
as arc_cpu_mumbojumbo(). so refactor and move all of those in a single
place: read_arc_build_cfg_regs(). This causes some code redcution too:

| bloat-o-meter2 arch/arc/kernel/setup.o.0 arch/arc/kernel/setup.o.1
| add/remove: 0/0 grow/shrink: 2/1 up/down: 64/-132 (-68)
| function                                     old     new   delta
| setup_processor                              610     670     +60
| cpuinfo_arc700                                76      80      +4
| arc_cpu_mumbojumbo                           752     620    -132

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-10-28 10:07:43 -07:00
Linus Torvalds f6167514c8 Merge branch 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
 "My patch fixes the btrfs list_head abuse that we tracked down during
  Dave Jones' memory corruption investigation. With both Jens and my
  patches in place, I'm no longer able to trigger problems.

  Filipe is fixing a difficult old bug between snapshots, balance and
  send. Dave is cooking a few more for the next rc, but these are tested
  and ready"

* 'for-linus-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  btrfs: fix races on root_log_ctx lists
  btrfs: fix incremental send failure caused by balance
2016-10-28 10:07:35 -07:00
Vineet Gupta 711c1f2671 ARCv2: boot log: print IOC exists as well as enabled status
Previously we would not print the case when IOC existed but was not
enabled.

And while at it, reduce one line off boot printing by consolidating
the Peripheral address space and IO-Coherency which in a way
applies to them

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2016-10-28 10:06:48 -07:00
Linus Torvalds 2cd0b50a18 sound fixes for 4.9-rc3
Here contains the usual stuff -- the fixups and quirks for HD-audio
 and USB-audio, in addition to a bad regression fix in ALSA sequencer
 timer since 4.8, and a trivial fix for asihpi PCI driver.
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Merge tag 'sound-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This contains the usual stuff -- the fixups and quirks for HD-audio
  and USB-audio, in addition to a bad regression fix in ALSA sequencer
  timer since 4.8, and a trivial fix for asihpi PCI driver"

* tag 'sound-4.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: usb-audio: Add quirk for Syntek STK1160
  ALSA: seq: Fix time account regression
  ALSA: hda - Fix surround output pins for ASRock B150M mobo
  ALSA: hda - Fix headset mic detection problem for two Dell laptops
  ALSA: asihpi: fix kernel memory disclosure
  ALSA: hda - Adding a new group of pin cfg into ALC295 pin quirk table
  ALSA: hda - allow 40 bit DMA mask for NVidia devices
2016-10-28 10:00:44 -07:00
Linus Torvalds bdb520845b patches to fix a regression in 4.9-rc1 on x86 PAT
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Merge tag 'drm-x86-pat-regression-fix' of git://people.freedesktop.org/~airlied/linux

Pull drm x86/pat regression fixes from Dave Airlie:
 "This is a standalone pull request for the fix for a regression
  introduced in -rc1 by a change to vm_insert_mixed to start using the
  PAT range tracking to validate page protections. With this fix in
  place, all the VRAM mappings for GPU drivers ended up at UC instead of
  WC.

  There are probably better ways to fix this long term, but nothing I'd
  considered for -fixes that wouldn't need more settling in time. So
  I've just created a new arch API that the drivers can reserve all
  their VRAM aperture ranges as WC"

* tag 'drm-x86-pat-regression-fix' of git://people.freedesktop.org/~airlied/linux:
  drm/drivers: add support for using the arch wc mapping API.
  x86/io: add interface to reserve io memtype for a resource range. (v1.1)
2016-10-28 09:36:07 -07:00