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Author SHA1 Message Date
Linus Torvalds 1fa91854dc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide
Pull IDE update from David Miller:
 "Small cleanup"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/ide:
  ide: use BIT() macro for defining bit-flags
2019-07-13 15:51:06 -07:00
Linus Torvalds 3f06962273 This pull-request contains the following changes for MTD:
MTD core changes:
 - New Hyperbus framework
 - New _is_locked (concat) implementation
 - Various cleanups
 
 NAND core changes:
 - use longest matching pattern in ->exec_op() default parser
 - export NAND operation tracer
 - add flag to indicate panic_write in MTD
 - use kzalloc() instead of kmalloc() and memset()
 
 Raw NAND controller drivers changes:
 - brcmnand:
   * fix BCH ECC layout for large page NAND parts
   * fallback to detected ecc-strength, ecc-step-size
   * when oops in progress use pio and interrupt polling
   * code refactor code to introduce helper functions
   * add support for v7.3 controller
 - FSMC:
   * use nand_op_trace for operation tracing
 - GPMI:
   * move all driver code into single file
   * various cleanups (including dmaengine changes)
   * use runtime PM to manage clocks
   * implement exec_op
 - MTK:
   * correct low level time calculation of r/w cycle
   * improve data sampling timing for read cycle
   * add validity check for CE# pin setting
   * fix wrongly assigned OOB buffer pointer issue
   * re-license MTK NAND driver as Dual MIT/GPL
 - STM32:
   * manage the get_irq error case
   * increase DMA completion timeouts
 
 Raw NAND chips drivers changes:
 - Macronix: add read-retry support
 
 Onenand driver changes:
 - add support for 8Gb datasize chips
 - avoid fall-through warnings
 
 SPI-NAND changes:
 - define macros for page-read ops with three-byte addresses
 - add support for two-byte device IDs and then for GigaDevice
   GD5F1GQ4UFxxG
 - add initial support for Paragon PN26G0xA
 - handle the case where the last page read has bitflips
 
 SPI-NOR core changes:
 - add support for the mt25ql02g and w25q16jv flashes
 - print error in case of jedec read id fails
 - is25lp256: add post BFPT fix to correct the addr_width
 
 SPI NOR controller drivers changes:
 - intel-spi: Add support for Intel Elkhart Lake SPI serial flash
 - smt32: remove the driver as the driver was replaced by spi-stm32-qspi.c
 - cadence-quadspi: add reset control
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Merge tag 'mtd/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux

Pull MTD updates from Miquel Raynal:
 "This contains the following changes for MTD:

  MTD core changes:
   - New Hyperbus framework
   - New _is_locked (concat) implementation
   - Various cleanups

  NAND core changes:
   - use longest matching pattern in ->exec_op() default parser
   - export NAND operation tracer
   - add flag to indicate panic_write in MTD
   - use kzalloc() instead of kmalloc() and memset()

  Raw NAND controller drivers changes:
   - brcmnand:
       - fix BCH ECC layout for large page NAND parts
       - fallback to detected ecc-strength, ecc-step-size
       - when oops in progress use pio and interrupt polling
       - code refactor code to introduce helper functions
       - add support for v7.3 controller
   - FSMC:
       - use nand_op_trace for operation tracing
   - GPMI:
       - move all driver code into single file
       - various cleanups (including dmaengine changes)
       - use runtime PM to manage clocks
       - implement exec_op
   - MTK:
       - correct low level time calculation of r/w cycle
       - improve data sampling timing for read cycle
       - add validity check for CE# pin setting
       - fix wrongly assigned OOB buffer pointer issue
       - re-license MTK NAND driver as Dual MIT/GPL
   - STM32:
       - manage the get_irq error case
       - increase DMA completion timeouts

  Raw NAND chips drivers changes:
   - Macronix: add read-retry support

  Onenand driver changes:
   - add support for 8Gb datasize chips
   - avoid fall-through warnings

  SPI-NAND changes:
   - define macros for page-read ops with three-byte addresses
   - add support for two-byte device IDs and then for GigaDevice
     GD5F1GQ4UFxxG
   - add initial support for Paragon PN26G0xA
   - handle the case where the last page read has bitflips

  SPI-NOR core changes:
   - add support for the mt25ql02g and w25q16jv flashes
   - print error in case of jedec read id fails
   - is25lp256: add post BFPT fix to correct the addr_width

  SPI NOR controller drivers changes:
   - intel-spi: Add support for Intel Elkhart Lake SPI serial flash
   - smt32: remove the driver as the driver was replaced by spi-stm32-qspi.c
   - cadence-quadspi: add reset control"

* tag 'mtd/for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (60 commits)
  mtd: concat: implement _is_locked mtd operation
  mtd: concat: refactor concat_lock/concat_unlock
  mtd: abi: do not use C++ style comments in uapi header
  mtd: afs: remove unneeded NULL check
  mtd: rawnand: stm32_fmc2: increase DMA completion timeouts
  mtd: rawnand: Use kzalloc() instead of kmalloc() and memset()
  mtd: hyperbus: Add driver for TI's HyperBus memory controller
  mtd: spinand: read returns badly if the last page has bitflips
  mtd: spinand: Add initial support for Paragon PN26G0xA
  mtd: rawnand: mtk: Re-license MTK NAND driver as Dual MIT/GPL
  mtd: rawnand: gpmi: remove double assignment to block_size
  dt-bindings: mtd: brcmnand: Add brcmnand, brcmnand-v7.3 support
  mtd: rawnand: brcmnand: Add support for v7.3 controller
  mtd: rawnand: brcmnand: Refactored code to introduce helper functions
  mtd: rawnand: brcmnand: When oops in progress use pio and interrupt polling
  mtd: Add flag to indicate panic_write
  mtd: rawnand: Add Macronix NAND read retry support
  mtd: onenand: Avoid fall-through warnings
  mtd: spinand: Add support for GigaDevice GD5F1GQ4UFxxG
  mtd: spinand: Add support for two-byte device IDs
  ...
2019-07-13 15:42:44 -07:00
Linus Torvalds 2260840592 - Add encrypted byte-offset initialization vector (eboiv) to DM crypt.
- Add optional discard features to DM snapshot which allow freeing space
   from a DM device whose free space was exhausted.
 
 - Various small improvements to use struct_size() and kzalloc().
 
 - Fix to check if DM thin metadata is in fail_io mode before attempting
   to update the superblock to set the needs_check flag.  Otherwise the
   DM thin-pool can hang.
 
 - Fix DM bufio shrinker's potential for ABBA recursion deadlock with DM
   thin provisioning on loop usecase.
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Merge tag 'for-5.3/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper updates from Mike Snitzer:

 - Add encrypted byte-offset initialization vector (eboiv) to DM crypt.

 - Add optional discard features to DM snapshot which allow freeing
   space from a DM device whose free space was exhausted.

 - Various small improvements to use struct_size() and kzalloc().

 - Fix to check if DM thin metadata is in fail_io mode before attempting
   to update the superblock to set the needs_check flag. Otherwise the
   DM thin-pool can hang.

 - Fix DM bufio shrinker's potential for ABBA recursion deadlock with DM
   thin provisioning on loop usecase.

* tag 'for-5.3/dm-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm bufio: fix deadlock with loop device
  dm snapshot: add optional discard support features
  dm crypt: implement eboiv - encrypted byte-offset initialization vector
  dm crypt: remove obsolete comment about plumb IV
  dm crypt: wipe private IV struct after key invalid flag is set
  dm integrity: use kzalloc() instead of kmalloc() + memset()
  dm: update stale comment in end_clone_bio()
  dm log writes: fix incorrect comment about the logged sequence example
  dm log writes: use struct_size() to calculate size of pending_block
  dm crypt: use struct_size() when allocating encryption context
  dm integrity: always set version on superblock update
  dm thin metadata: check if in fail_io mode when setting needs_check
2019-07-13 15:24:31 -07:00
Linus Torvalds 92adeb616c Some small fixes for various things, nothing huge, mostly found
by automated tools.
 
 Plus add a driver that allows Linux to act as an IPMB slave device,
 so it can be a satellite MC in an IPMI network.
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Merge tag 'for-linus-5.3' of git://github.com/cminyard/linux-ipmi

Pull IPMI updates from Corey Minyard:
 "Some small fixes for various things, nothing huge, mostly found by
  automated tools.

  Plus add a driver that allows Linux to act as an IPMB slave device, so
  it can be a satellite MC in an IPMI network"

* tag 'for-linus-5.3' of git://github.com/cminyard/linux-ipmi:
  docs: ipmb: place it at driver-api and convert to ReST
  fix platform_no_drv_owner.cocci warnings
  ipmi: ipmb: don't allocate i2c_client on stack
  ipmi: ipmb: Fix build error while CONFIG_I2C is set to m
  Add support for IPMB driver
  drivers: ipmi: Drop device reference
  ipmi_ssif: fix unexpected driver unregister warning
  ipmi_si: use bool type for initialized variable
  ipmi_si: fix unexpected driver unregister warning
2019-07-13 15:07:02 -07:00
Linus Torvalds 43c95d3694 This is the bulk of pin control changes for the v5.3 kernel
cycle:
 
 Core changes:
 
 - Device links can optionally be added between a pin control
   producer and its consumers. This will affect how the system
   power management is handled: a pin controller will not suspend
   before all of its consumers have been suspended. This was
   necessary for the ST Microelectronics STMFX expander and
   need to be tested on other systems as well: it makes sense
   to make this default in the long run. Right now it is
   opt-in per driver.
 
 - Drive strength can be specified in microamps. With decreases
   in silicon technology, milliamps isn't granular enough, let's
   make it possible to select drive strengths in microamps. Right
   now the Meson (AMlogic) driver needs this.
 
 New drivers:
 
 - New subdriver for the Tegra 194 SoC.
 
 - New subdriver for the Qualcomm SDM845.
 
 - New subdriver for the Qualcomm SM8150.
 
 - New subdriver for the Freescale i.MX8MN (Freescale is now a
   product line of NXP).
 
 - New subdriver for Marvell MV98DX1135.
 
 Driver improvements:
 
 - The Bitmain BM1880 driver now supports pin config in
   addition to muxing.
 
 - The Qualcomm drivers can now reserve some GPIOs as taken
   aside and not usable for users. This is used in ACPI systems
   to take out some GPIO lines used by the BIOS so that
   noone else (neither kernel nor userspace) will play with them
   by mistake and crash the machine.
 
 - A slew of refurbishing around the Aspeed drivers (board
   management controllers for servers) in preparation for the
   new Aspeed AST2600 SoC.
 
 - A slew of improvements over the SH PFC drivers as usual.
 
 - Misc cleanups and fixes.
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Merge tag 'pinctrl-v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Pull pin control updates from Linus Walleij:
 "This is the bulk of pin control changes for the v5.3 kernel cycle:

  Core changes:

   - Device links can optionally be added between a pin control producer
     and its consumers. This will affect how the system power management
     is handled: a pin controller will not suspend before all of its
     consumers have been suspended.

     This was necessary for the ST Microelectronics STMFX expander and
     need to be tested on other systems as well: it makes sense to make
     this default in the long run.

     Right now it is opt-in per driver.

   - Drive strength can be specified in microamps. With decreases in
     silicon technology, milliamps isn't granular enough, let's make it
     possible to select drive strengths in microamps.

     Right now the Meson (AMlogic) driver needs this.

  New drivers:

   - New subdriver for the Tegra 194 SoC.

   - New subdriver for the Qualcomm SDM845.

   - New subdriver for the Qualcomm SM8150.

   - New subdriver for the Freescale i.MX8MN (Freescale is now a product
     line of NXP).

   - New subdriver for Marvell MV98DX1135.

  Driver improvements:

   - The Bitmain BM1880 driver now supports pin config in addition to
     muxing.

   - The Qualcomm drivers can now reserve some GPIOs as taken aside and
     not usable for users. This is used in ACPI systems to take out some
     GPIO lines used by the BIOS so that noone else (neither kernel nor
     userspace) will play with them by mistake and crash the machine.

   - A slew of refurbishing around the Aspeed drivers (board management
     controllers for servers) in preparation for the new Aspeed AST2600
     SoC.

   - A slew of improvements over the SH PFC drivers as usual.

   - Misc cleanups and fixes"

* tag 'pinctrl-v5.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (106 commits)
  pinctrl: aspeed: Strip moved macros and structs from private header
  pinctrl: aspeed: Fix missed include
  pinctrl: baytrail: Use GENMASK() consistently
  pinctrl: baytrail: Re-use data structures from pinctrl-intel.h
  pinctrl: baytrail: Use defined macro instead of magic in byt_get_gpio_mux()
  pinctrl: qcom: Add SM8150 pinctrl driver
  dt-bindings: pinctrl: qcom: Add SM8150 pinctrl binding
  dt-bindings: pinctrl: qcom: Document missing gpio nodes
  pinctrl: aspeed: Add implementation-related documentation
  pinctrl: aspeed: Split out pinmux from general pinctrl
  pinctrl: aspeed: Clarify comment about strapping W1C
  pinctrl: aspeed: Correct comment that is no longer true
  MAINTAINERS: Add entry for ASPEED pinctrl drivers
  dt-bindings: pinctrl: aspeed: Convert AST2500 bindings to json-schema
  dt-bindings: pinctrl: aspeed: Convert AST2400 bindings to json-schema
  dt-bindings: pinctrl: aspeed: Split bindings document in two
  pinctrl: qcom: Add irq_enable callback for msm gpio
  pinctrl: madera: Fixup SPDX headers
  pinctrl: qcom: sdm845: Fix CONFIG preprocessor guard
  pinctrl: tegra: Add bitmask support for parked bits
  ...
2019-07-13 15:02:27 -07:00
Linus Torvalds 073c916bc0 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:

 - an update to Elan touchpad SMBus driver to fetch device parameters
   (size, resolution) while it is still in PS/2 mode, before switching
   over to SMBus, as in that mode some devices return garbage dimensions

 - update to iforce joystick driver

 - miscellaneous driver fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (48 commits)
  Input: gpio_keys_polled - allow specifying name of input device
  Input: edt-ft5x06 - simplify event reporting code
  Input: max77650-onkey - add MODULE_ALIAS()
  Input: atmel_mxt_ts - fix leak in mxt_update_cfg()
  Input: synaptics - enable SMBUS on T480 thinkpad trackpad
  Input: atmel_mxt_ts - fix -Wunused-const-variable
  Input: joydev - extend absolute mouse detection
  HID: quirks: Refactor ELAN 400 and 401 handling
  Input: elan_i2c - export the device id whitelist
  Input: edt-ft5x06 - use get_unaligned_be16()
  Input: iforce - add the Saitek R440 Force Wheel
  Input: iforce - use unaligned accessors, where appropriate
  Input: iforce - drop couple of temps from transport code
  Input: iforce - drop bus type from iforce structure
  Input: iforce - use DMA-safe buffores for USB transfers
  Input: iforce - allow callers supply data buffer when fetching device IDs
  Input: iforce - only call iforce_process_packet() if initialized
  Input: iforce - signal command completion from transport code
  Input: iforce - do not combine arguments for iforce_process_packet()
  Input: iforce - factor out hat handling when parsing packets
  ...
2019-07-13 14:40:42 -07:00
Linus Torvalds a2d79c7174 for-5.3/io_uring-20190711
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Merge tag 'for-5.3/io_uring-20190711' of git://git.kernel.dk/linux-block

Pull io_uring updates from Jens Axboe:
 "This contains:

   - Support for recvmsg/sendmsg as first class opcodes.

     I don't envision going much further down this path, as there are
     plans in progress to support potentially any system call in an
     async fashion through io_uring. But I think it does make sense to
     have certain core ops available directly, especially those that can
     support a "try this non-blocking" flag/mode. (me)

   - Handle generic short reads automatically.

     This can happen fairly easily if parts of the buffered read is
     cached. Since the application needs to issue another request for
     the remainder, just do this internally and save kernel/user
     roundtrip while providing a nicer more robust API. (me)

   - Support for linked SQEs.

     This allows SQEs to depend on each other, enabling an application
     to eg queue a read-from-this-file,write-to-that-file pair. (me)

   - Fix race in stopping SQ thread (Jackie)"

* tag 'for-5.3/io_uring-20190711' of git://git.kernel.dk/linux-block:
  io_uring: fix io_sq_thread_stop running in front of io_sq_thread
  io_uring: add support for recvmsg()
  io_uring: add support for sendmsg()
  io_uring: add support for sqe links
  io_uring: punt short reads to async context
  uio: make import_iovec()/compat_import_iovec() return bytes on success
2019-07-13 10:36:53 -07:00
Yuyang Du 68d41d8c94 locking/lockdep: Fix lock used or unused stats error
The stats variable nr_unused_locks is incremented every time a new lock
class is register and decremented when the lock is first used in
__lock_acquire(). And after all, it is shown and checked in lockdep_stats.

However, under configurations that either CONFIG_TRACE_IRQFLAGS or
CONFIG_PROVE_LOCKING is not defined:

The commit:

  0918065151 ("locking/lockdep: Consolidate lock usage bit initialization")

missed marking the LOCK_USED flag at IRQ usage initialization because
as mark_usage() is not called. And the commit:

  886532aee3 ("locking/lockdep: Move mark_lock() inside CONFIG_TRACE_IRQFLAGS && CONFIG_PROVE_LOCKING")

further made mark_lock() not defined such that the LOCK_USED cannot be
marked at all when the lock is first acquired.

As a result, we fix this by not showing and checking the stats under such
configurations for lockdep_stats.

Reported-by: Qian Cai <cai@lca.pw>
Signed-off-by: Yuyang Du <duyuyang@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: arnd@arndb.de
Cc: frederic@kernel.org
Link: https://lkml.kernel.org/r/20190709101522.9117-1-duyuyang@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-07-13 11:24:53 +02:00
Peter Zijlstra e3d85487fb sched/core: Fix preempt warning in ttwu
John reported a DEBUG_PREEMPT warning caused by commit:

  aacedf26fb ("sched/core: Optimize try_to_wake_up() for local wakeups")

I overlooked that ttwu_stat() requires preemption disabled.

Reported-by: John Stultz <john.stultz@linaro.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: aacedf26fb ("sched/core: Optimize try_to_wake_up() for local wakeups")
Link: https://lkml.kernel.org/r/20190710105736.GK3402@hirez.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-07-13 11:23:27 +02:00
Kan Liang e4557c1a46 perf/x86/intel: Fix spurious NMI on fixed counter
If a user first sample a PEBS event on a fixed counter, then sample a
non-PEBS event on the same fixed counter on Icelake, it will trigger
spurious NMI. For example:

  perf record -e 'cycles:p' -a
  perf record -e 'cycles' -a

The error message for spurious NMI:

  [June 21 15:38] Uhhuh. NMI received for unknown reason 30 on CPU 2.
  [    +0.000000] Do you have a strange power saving mode enabled?
  [    +0.000000] Dazed and confused, but trying to continue

The bug was introduced by the following commit:

  commit 6f55967ad9 ("perf/x86/intel: Fix race in intel_pmu_disable_event()")

The commit moves the intel_pmu_pebs_disable() after intel_pmu_disable_fixed(),
which returns immediately.  The related bit of PEBS_ENABLE MSR will never be
cleared for the fixed counter. Then a non-PEBS event runs on the fixed counter,
but the bit on PEBS_ENABLE is still set, which triggers spurious NMIs.

Check and disable PEBS for fixed counters after intel_pmu_disable_fixed().

Reported-by: Yi, Ammy <ammy.yi@intel.com>
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: <stable@vger.kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Fixes: 6f55967ad9 ("perf/x86/intel: Fix race in intel_pmu_disable_event()")
Link: https://lkml.kernel.org/r/20190625142135.22112-1-kan.liang@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-07-13 11:21:29 +02:00
Alexander Shishkin 8a58ddae23 perf/core: Fix exclusive events' grouping
So far, we tried to disallow grouping exclusive events for the fear of
complications they would cause with moving between contexts. Specifically,
moving a software group to a hardware context would violate the exclusivity
rules if both groups contain matching exclusive events.

This attempt was, however, unsuccessful: the check that we have in the
perf_event_open() syscall is both wrong (looks at wrong PMU) and
insufficient (group leader may still be exclusive), as can be illustrated
by running:

  $ perf record -e '{intel_pt//,cycles}' uname
  $ perf record -e '{cycles,intel_pt//}' uname

ultimately successfully.

Furthermore, we are completely free to trigger the exclusivity violation
by:

   perf -e '{cycles,intel_pt//}' -e '{intel_pt//,instructions}'

even though the helpful perf record will not allow that, the ABI will.

The warning later in the perf_event_open() path will also not trigger, because
it's also wrong.

Fix all this by validating the original group before moving, getting rid
of broken safeguards and placing a useful one to perf_install_in_context().

Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: mathieu.poirier@linaro.org
Cc: will.deacon@arm.com
Fixes: bed5b25ad9 ("perf: Add a pmu capability for "exclusive" events")
Link: https://lkml.kernel.org/r/20190701110755.24646-1-alexander.shishkin@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-07-13 11:21:28 +02:00
Kim Phillips 2f217d58a8 perf/x86/amd/uncore: Set the thread mask for F17h L3 PMCs
Fill in the L3 performance event select register ThreadMask
bitfield, to enable per hardware thread accounting.

Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Gary Hook <Gary.Hook@amd.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Liska <mliska@suse.cz>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Pu Wen <puwen@hygon.cn>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: https://lkml.kernel.org/r/20190628215906.4276-2-kim.phillips@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-07-13 11:21:27 +02:00
Kim Phillips 16f4641166 perf/x86/amd/uncore: Do not set 'ThreadMask' and 'SliceMask' for non-L3 PMCs
The following commit:

  d7cbbe49a9 ("perf/x86/amd/uncore: Set ThreadMask and SliceMask for L3 Cache perf events")

enables L3 PMC events for all threads and slices by writing 1's in
'ChL3PmcCfg' (L3 PMC PERF_CTL) register fields.

Those bitfields overlap with high order event select bits in the Data
Fabric PMC control register, however.

So when a user requests raw Data Fabric events (-e amd_df/event=0xYYY/),
the two highest order bits get inadvertently set, changing the counter
select to events that don't exist, and for which no counts are read.

This patch changes the logic to write the L3 masks only when dealing
with L3 PMC counters.

AMD Family 16h and below Northbridge (NB) counters were not affected.

Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Gary Hook <Gary.Hook@amd.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Janakarajan Natarajan <Janakarajan.Natarajan@amd.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Martin Liska <mliska@suse.cz>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Pu Wen <puwen@hygon.cn>
Cc: Stephane Eranian <eranian@google.com>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Fixes: d7cbbe49a9 ("perf/x86/amd/uncore: Set ThreadMask and SliceMask for L3 Cache perf events")
Link: https://lkml.kernel.org/r/20190628215906.4276-1-kim.phillips@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-07-13 11:21:26 +02:00
Peter Zijlstra 1cf8dfe8a6 perf/core: Fix race between close() and fork()
Syzcaller reported the following Use-after-Free bug:

	close()						clone()

							  copy_process()
							    perf_event_init_task()
							      perf_event_init_context()
							        mutex_lock(parent_ctx->mutex)
								inherit_task_group()
								  inherit_group()
								    inherit_event()
								      mutex_lock(event->child_mutex)
								      // expose event on child list
								      list_add_tail()
								      mutex_unlock(event->child_mutex)
							        mutex_unlock(parent_ctx->mutex)

							    ...
							    goto bad_fork_*

							  bad_fork_cleanup_perf:
							    perf_event_free_task()

	  perf_release()
	    perf_event_release_kernel()
	      list_for_each_entry()
		mutex_lock(ctx->mutex)
		mutex_lock(event->child_mutex)
		// event is from the failing inherit
		// on the other CPU
		perf_remove_from_context()
		list_move()
		mutex_unlock(event->child_mutex)
		mutex_unlock(ctx->mutex)

							      mutex_lock(ctx->mutex)
							      list_for_each_entry_safe()
							        // event already stolen
							      mutex_unlock(ctx->mutex)

							    delayed_free_task()
							      free_task()

	     list_for_each_entry_safe()
	       list_del()
	       free_event()
	         _free_event()
		   // and so event->hw.target
		   // is the already freed failed clone()
		   if (event->hw.target)
		     put_task_struct(event->hw.target)
		       // WHOOPSIE, already quite dead

Which puts the lie to the the comment on perf_event_free_task():
'unexposed, unused context' not so much.

Which is a 'fun' confluence of fail; copy_process() doing an
unconditional free_task() and not respecting refcounts, and perf having
creative locking. In particular:

  82d94856fa ("perf/core: Fix lock inversion between perf,trace,cpuhp")

seems to have overlooked this 'fun' parade.

Solve it by using the fact that detached events still have a reference
count on their (previous) context. With this perf_event_free_task()
can detect when events have escaped and wait for their destruction.

Debugged-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Reported-by: syzbot+a24c397a29ad22d86c98@syzkaller.appspotmail.com
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Cc: <stable@vger.kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Fixes: 82d94856fa ("perf/core: Fix lock inversion between perf,trace,cpuhp")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-07-13 11:21:25 +02:00
Ingo Molnar e5eb08ac81 perf/core improvements and fixes:
Intel PT:
 
   Adrian Hunter:
 
   - Fix DROP VIEW power_events_view in the postgresql and sqlite export-db
     python scripts.
 
 perf script:
 
   Song Liu:
 
   - Assume native_arch for pipe mode, fixing a segfault.
 
 perf inject:
 
   Arnaldo Carvalho de Melo:
 
   - The tool->read() call may pass a NULL evsel, handle it.
 
 core:
 
   Arnaldo Carvalho de Melo:
 
   - Move zalloc/zfree.c to tools/lib, further eroding tools/perf/util.[ch]
 
   - Use zfree() where applicable instead of open coded equivalent.
 
   - Add stdlib.h and some other headers to places where its needed and were
     getting via util.h, that doesn't need that anymore.
 
   - Use list_del_init() more thoroughly.
 
 Miscellaneous:
 
   Leo Yan:
 
   - Fix use after free and potential NULL pointer derefs detected by the
     smatch tool in various places.
 
   Luke Mujica:
 
   - Remove a couple unused variables in the parse-events code.
 
   Numfor Mbiziwo-Tiapo:
 
   - Initialize variable to suppress memory sanitizer warning in the
     mmap-thread-lookup 'perf test' entry.
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo-5.3-20190709' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/core improvements and fixes:

Intel PT:

  Adrian Hunter:

  - Fix DROP VIEW power_events_view in the postgresql and sqlite export-db
    python scripts.

perf script:

  Song Liu:

  - Assume native_arch for pipe mode, fixing a segfault.

perf inject:

  Arnaldo Carvalho de Melo:

  - The tool->read() call may pass a NULL evsel, handle it.

core:

  Arnaldo Carvalho de Melo:

  - Move zalloc/zfree.c to tools/lib, further eroding tools/perf/util.[ch]

  - Use zfree() where applicable instead of open coded equivalent.

  - Add stdlib.h and some other headers to places where its needed and were
    getting via util.h, that doesn't need that anymore.

  - Use list_del_init() more thoroughly.

Miscellaneous:

  Leo Yan:

  - Fix use after free and potential NULL pointer derefs detected by the
    smatch tool in various places.

  Luke Mujica:

  - Remove a couple unused variables in the parse-events code.

  Numfor Mbiziwo-Tiapo:

  - Initialize variable to suppress memory sanitizer warning in the
    mmap-thread-lookup 'perf test' entry.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2019-07-13 11:12:47 +02:00
Eric Biggers 25a09ce796 ppp: mppe: Revert "ppp: mppe: Add softdep to arc4"
Commit 0e5a610b5c ("ppp: mppe: switch to RC4 library interface"),
which was merged through the crypto tree for v5.3, changed ppp_mppe.c to
use the new arc4_crypt() library function rather than access RC4 through
the dynamic crypto_skcipher API.

Meanwhile commit aad1dcc4f0 ("ppp: mppe: Add softdep to arc4") was
merged through the net tree and added a module soft-dependency on "arc4".

The latter commit no longer makes sense because the code now uses the
"libarc4" module rather than "arc4", and also due to the direct use of
arc4_crypt(), no module soft-dependency is required.

So revert the latter commit.

Cc: Takashi Iwai <tiwai@suse.de>
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 22:58:49 -07:00
Linus Torvalds 964a4eacef dlm for 5.3
This set removes some unnecessary debugfs error handling, and
 checks that lowcomms workqueues are not NULL before destroying.
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Merge tag 'dlm-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm

Pull dlm updates from David Teigland:
 "This set removes some unnecessary debugfs error handling, and checks
  that lowcomms workqueues are not NULL before destroying"

* tag 'dlm-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/teigland/linux-dlm:
  dlm: no need to check return value of debugfs_create functions
  dlm: check if workqueues are NULL before flushing/destroying
2019-07-12 17:37:53 -07:00
Linus Torvalds 23bbbf5c1f 9p pull request for inclusion in 5.13
Two small fixes to properly cleanup the 9p transports list if virtio/xen
 module initialization fail.
 9p might otherwise try to access memory from a module that failed to
 register got freed.
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Merge tag '9p-for-5.3' of git://github.com/martinetd/linux

Pull 9p updates from Dominique Martinet:
 "Two small fixes to properly cleanup the 9p transports list if
  virtio/xen module initialization fail.

  9p might otherwise try to access memory from a module that failed to
  register got freed"

* tag '9p-for-5.3' of git://github.com/martinetd/linux:
  9p/xen: Add cleanup path in p9_trans_xen_init
  9p/virtio: Add cleanup path in p9_virtio_init
2019-07-12 17:31:19 -07:00
Linus Torvalds a641a88e5d f2fs-for-5.3-rc1
In this round, we've introduced native swap file support which can exploit DIO,
 enhanced existing checkpoint=disable feature with additional mount option to
 tune the triggering condition, and allowed user to preallocate physical blocks
 in a pinned file which will be useful to avoid f2fs fragmentation in append-only
 workloads. In addition, we've fixed subtle quota corruption issue.
 
 Enhancement:
  - add swap file support which uses DIO
  - allocate blocks for pinned file
  - allow SSR and mount option to enhance checkpoint=disable
  - enhance IPU IOs
  - add more sanity checks such as memory boundary access
 
 Bug fix:
  - quota corruption in very corner case of error-injected SPO case
  - fix root_reserved on remount and some wrong counts
  - add missing fsck flag
 
 Some patches were also introduced to clean up ambiguous i_flags and debugging
 messages codes.
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Merge tag 'f2fs-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

Pull f2fs updates from Jaegeuk Kim:
 "In this round, we've introduced native swap file support which can
  exploit DIO, enhanced existing checkpoint=disable feature with
  additional mount option to tune the triggering condition, and allowed
  user to preallocate physical blocks in a pinned file which will be
  useful to avoid f2fs fragmentation in append-only workloads. In
  addition, we've fixed subtle quota corruption issue.

  Enhancements:
   - add swap file support which uses DIO
   - allocate blocks for pinned file
   - allow SSR and mount option to enhance checkpoint=disable
   - enhance IPU IOs
   - add more sanity checks such as memory boundary access

  Bug fixes:
   - quota corruption in very corner case of error-injected SPO case
   - fix root_reserved on remount and some wrong counts
   - add missing fsck flag

  Some patches were also introduced to clean up ambiguous i_flags and
  debugging messages codes"

* tag 'f2fs-for-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (33 commits)
  f2fs: improve print log in f2fs_sanity_check_ckpt()
  f2fs: avoid out-of-range memory access
  f2fs: fix to avoid long latency during umount
  f2fs: allow all the users to pin a file
  f2fs: support swap file w/ DIO
  f2fs: allocate blocks for pinned file
  f2fs: fix is_idle() check for discard type
  f2fs: add a rw_sem to cover quota flag changes
  f2fs: set SBI_NEED_FSCK for xattr corruption case
  f2fs: use generic EFSBADCRC/EFSCORRUPTED
  f2fs: Use DIV_ROUND_UP() instead of open-coding
  f2fs: print kernel message if filesystem is inconsistent
  f2fs: introduce f2fs_<level> macros to wrap f2fs_printk()
  f2fs: avoid get_valid_blocks() for cleanup
  f2fs: ioctl for removing a range from F2FS
  f2fs: only set project inherit bit for directory
  f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags
  f2fs: replace ktype default_attrs with default_groups
  f2fs: Add option to limit required GC for checkpoint=disable
  f2fs: Fix accounting for unusable blocks
  ...
2019-07-12 17:28:24 -07:00
Linus Torvalds 4ce9d181eb New stuff for 5.3:
- Refactor inode geometry calculation into a single structure instead of
   open-coding pieces everywhere.
 - Add online repair to build options.
 - Remove unnecessary function call flags and functions.
 - Claim maintainership of various loose xfs documentation and header
   files.
 - Use struct bio directly for log buffer IOs instead of struct xfs_buf.
 - Reduce log item boilerplate code requirements.
 - Merge log item code spread across too many files.
 - Further distinguish between log item commits and cancellations.
 - Various small cleanups to the ag small allocator.
 - Support cgroup-aware writeback
 - libxfs refactoring for mkfs cleanup
 - Remove unneeded #includes
 - Fix a memory allocation miscalculation in the new log bio code
 - Fix bisection problems
 - Fix a crash in ioend processing caused by tripping over freeing of
   preallocated transactions
 - Split out a generic inode walk mechanism from the bulkstat code, hook
   up all the internal users to use the walking code, then clean up
   bulkstat to serve only the bulkstat ioctls.
 - Add a multithreaded iwalk implementation to speed up quotacheck on
   fast storage with many CPUs.
 - Remove unnecessary return values in logging teardown functions.
 - Supplement the bstat and inogrp structures with new bulkstat and
   inumbers structures that have all the fields we need for v5
   filesystem features and none of the padding problems of their
   predecessors.
 - Wire up new ioctls that use the new structures with a much simpler
   bulk_ireq structure at the head instead of the pointerhappy mess we
   had before.
 - Enable userspace to constrain bulkstat returns to a single AG or a
   single special inode so that we can phase out a lot of geometry
   guesswork in userspace.
 - Reduce memory consumption and zeroing overhead in extended attribute
   scrub code.
 - Fix some behavioral regressions in the new bulkstat backend code.
 - Fix some behavioral regressions in the new log bio code.
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Merge tag 'xfs-5.3-merge-12' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs updates from Darrick Wong:
 "In this release there are a significant amounts of consolidations and
  cleanups in the log code; restructuring of the log to issue struct
  bios directly; new bulkstat ioctls to return v5 fs inode information
  (and fix all the padding problems of the old ioctl); the beginnings of
  multithreaded inode walks (e.g. quotacheck); and a reduction in memory
  usage in the online scrub code leading to reduced runtimes.

   - Refactor inode geometry calculation into a single structure instead
     of open-coding pieces everywhere.

   - Add online repair to build options.

   - Remove unnecessary function call flags and functions.

   - Claim maintainership of various loose xfs documentation and header
     files.

   - Use struct bio directly for log buffer IOs instead of struct
     xfs_buf.

   - Reduce log item boilerplate code requirements.

   - Merge log item code spread across too many files.

   - Further distinguish between log item commits and cancellations.

   - Various small cleanups to the ag small allocator.

   - Support cgroup-aware writeback

   - libxfs refactoring for mkfs cleanup

   - Remove unneeded #includes

   - Fix a memory allocation miscalculation in the new log bio code

   - Fix bisection problems

   - Fix a crash in ioend processing caused by tripping over freeing of
     preallocated transactions

   - Split out a generic inode walk mechanism from the bulkstat code,
     hook up all the internal users to use the walking code, then clean
     up bulkstat to serve only the bulkstat ioctls.

   - Add a multithreaded iwalk implementation to speed up quotacheck on
     fast storage with many CPUs.

   - Remove unnecessary return values in logging teardown functions.

   - Supplement the bstat and inogrp structures with new bulkstat and
     inumbers structures that have all the fields we need for v5
     filesystem features and none of the padding problems of their
     predecessors.

   - Wire up new ioctls that use the new structures with a much simpler
     bulk_ireq structure at the head instead of the pointerhappy mess we
     had before.

   - Enable userspace to constrain bulkstat returns to a single AG or a
     single special inode so that we can phase out a lot of geometry
     guesswork in userspace.

   - Reduce memory consumption and zeroing overhead in extended
     attribute scrub code.

   - Fix some behavioral regressions in the new bulkstat backend code.

   - Fix some behavioral regressions in the new log bio code"

* tag 'xfs-5.3-merge-12' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: (100 commits)
  xfs: chain bios the right way around in xfs_rw_bdev
  xfs: bump INUMBERS cursor correctly in xfs_inumbers_walk
  xfs: don't update lastino for FSBULKSTAT_SINGLE
  xfs: online scrub needn't bother zeroing its temporary buffer
  xfs: only allocate memory for scrubbing attributes when we need it
  xfs: refactor attr scrub memory allocation function
  xfs: refactor extended attribute buffer pointer functions
  xfs: attribute scrub should use seen_enough to pass error values
  xfs: allow single bulkstat of special inodes
  xfs: specify AG in bulk req
  xfs: wire up the v5 inumbers ioctl
  xfs: wire up new v5 bulkstat ioctls
  xfs: introduce v5 inode group structure
  xfs: introduce new v5 bulkstat structure
  xfs: rename bulkstat functions
  xfs: remove various bulk request typedef usage
  fs: xfs: xfs_log: Change return type from int to void
  xfs: poll waiting for quotacheck
  xfs: multithreaded iwalk implementation
  xfs: refactor INUMBERS to use iwalk functions
  ...
2019-07-12 17:17:51 -07:00
Linus Torvalds 5010fe9f09 New for 5.3:
- Standardize parameter checking for the SETFLAGS and FSSETXATTR ioctls
   (which were the file attribute setters for ext4 and xfs and have now
   been hoisted to the vfs)
 - Only allow the DAX flag to be set on files and directories.
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Merge tag 'vfs-fix-ioctl-checking-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull common SETFLAGS/FSSETXATTR parameter checking from Darrick Wong:
 "Here's a patch series that sets up common parameter checking functions
  for the FS_IOC_SETFLAGS and FS_IOC_FSSETXATTR ioctl implementations.

  The goal here is to reduce the amount of behaviorial variance between
  the filesystems where those ioctls originated (ext2 and XFS,
  respectively) and everybody else.

   - Standardize parameter checking for the SETFLAGS and FSSETXATTR
     ioctls (which were the file attribute setters for ext4 and xfs and
     have now been hoisted to the vfs)

   - Only allow the DAX flag to be set on files and directories"

* tag 'vfs-fix-ioctl-checking-3' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  vfs: only allow FSSETXATTR to set DAX flag on files and dirs
  vfs: teach vfs_ioc_fssetxattr_check to check extent size hints
  vfs: teach vfs_ioc_fssetxattr_check to check project id info
  vfs: create a generic checking function for FS_IOC_FSSETXATTR
  vfs: create a generic checking and prep function for FS_IOC_SETFLAGS
2019-07-12 16:54:37 -07:00
Linus Torvalds 8487d82299 linux-kselftest-5.3-rc1
This Kselftest update for Linux 5.3-rc1 consists of build failure
 fixes and minor code cleaning patch to remove duplicate headers.
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Merge tag 'linux-kselftest-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull Kselftest updates from Shuah Khan:
 "This Kselftest update for Linux 5.3-rc1 consists of build failure
  fixes and minor code cleaning patch to remove duplicate headers"

* tag 'linux-kselftest-5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  rseq/selftests: Fix Thumb mode build failure on arm32
  kselftests: cgroup: remove duplicated include from test_freezer.c
  selftests: timestamping: Fix SIOCGSTAMP undeclared build failure
  selftests: dma-buf: Adding kernel config fragment CONFIG_UDMABUF=y
2019-07-12 16:08:21 -07:00
Linus Torvalds 106f1466e7 Kconfig updates for v5.3
- always require argument for --defconfig and remove the hard-coded
   arch/$(ARCH)/defconfig path
 
 - make arch/$(SRCARCH)/configs/defconfig the new default of defconfig
 
 - some code cleanups
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Merge tag 'kconfig-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kconfig updates from Masahiro Yamada:

 - always require argument for --defconfig and remove the hard-coded
   arch/$(ARCH)/defconfig path

 - make arch/$(SRCARCH)/configs/defconfig the new default of defconfig

 - some code cleanups

* tag 'kconfig-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kconfig: remove meaningless if-conditional in conf_read()
  kconfig: Fix spelling of sym_is_changable
  unicore32: rename unicore32_defconfig to defconfig
  kconfig: make arch/*/configs/defconfig the default of KBUILD_DEFCONFIG
  kconfig: add static qualifier to expand_string()
  kconfig: require the argument of --defconfig
  kconfig: remove always false ifeq ($(KBUILD_DEFCONFIG,) conditional
2019-07-12 16:06:27 -07:00
Linus Torvalds 39ceda5ce1 Kbuild updates for v5.3
- remove headers_{install,check}_all targets
 
 - remove unreasonable 'depends on !UML' from CONFIG_SAMPLES
 
 - re-implement 'make headers_install' more cleanly
 
 - add new header-test-y syntax to compile-test headers
 
 - compile-test exported headers to ensure they are compilable in
   user-space
 
 - compile-test headers under include/ to ensure they are self-contained
 
 - remove -Waggregate-return, -Wno-uninitialized, -Wno-unused-value flags
 
 - add -Werror=unknown-warning-option for Clang
 
 - add 128-bit built-in types support to genksyms
 
 - fix missed rebuild of modules.builtin
 
 - propagate 'No space left on device' error in fixdep to Make
 
 - allow Clang to use its integrated assembler
 
 - improve some coccinelle scripts
 
 - add a new flag KBUILD_ABS_SRCTREE to request Kbuild to use absolute
   path for $(srctree).
 
 - do not ignore errors when compression utility is missing
 
 - misc cleanups
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Merge tag 'kbuild-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - remove headers_{install,check}_all targets

 - remove unreasonable 'depends on !UML' from CONFIG_SAMPLES

 - re-implement 'make headers_install' more cleanly

 - add new header-test-y syntax to compile-test headers

 - compile-test exported headers to ensure they are compilable in
   user-space

 - compile-test headers under include/ to ensure they are self-contained

 - remove -Waggregate-return, -Wno-uninitialized, -Wno-unused-value
   flags

 - add -Werror=unknown-warning-option for Clang

 - add 128-bit built-in types support to genksyms

 - fix missed rebuild of modules.builtin

 - propagate 'No space left on device' error in fixdep to Make

 - allow Clang to use its integrated assembler

 - improve some coccinelle scripts

 - add a new flag KBUILD_ABS_SRCTREE to request Kbuild to use absolute
   path for $(srctree).

 - do not ignore errors when compression utility is missing

 - misc cleanups

* tag 'kbuild-v5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (49 commits)
  kbuild: use -- separater intead of $(filter-out ...) for cc-cross-prefix
  kbuild: Inform user to pass ARCH= for make mrproper
  kbuild: fix compression errors getting ignored
  kbuild: add a flag to force absolute path for srctree
  kbuild: replace KBUILD_SRCTREE with boolean building_out_of_srctree
  kbuild: remove src and obj from the top Makefile
  scripts/tags.sh: remove unused environment variables from comments
  scripts/tags.sh: drop SUBARCH support for ARM
  kbuild: compile-test kernel headers to ensure they are self-contained
  kheaders: include only headers into kheaders_data.tar.xz
  kheaders: remove meaningless -R option of 'ls'
  kbuild: support header-test-pattern-y
  kbuild: do not create wrappers for header-test-y
  kbuild: compile-test exported headers to ensure they are self-contained
  init/Kconfig: add CONFIG_CC_CAN_LINK
  kallsyms: exclude kasan local symbols on s390
  kbuild: add more hints about SUBDIRS replacement
  coccinelle: api/stream_open: treat all wait_.*() calls as blocking
  coccinelle: put_device: Add a cast to an expression for an assignment
  coccinelle: put_device: Adjust a message construction
  ...
2019-07-12 16:03:16 -07:00
Linus Torvalds 5f26f11436 asm-generic: remove ptrace.h
The asm-generic changes for 5.3 consist of a cleanup series from
 Christoph Hellwig, who explains:
 
 "asm-generic/ptrace.h is a little weird in that it doesn't actually
 implement any functionality, but it provided multiple layers of macros
 that just implement trivial inline functions.  We implement those
 directly in the few architectures and be off with a much simpler
 design."
 
 Link: https://lore.kernel.org/lkml/20190624054728.30966-1-hch@lst.de/
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'asm-generic-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic updates from Arnd Bergmann:
 "The asm-generic changes for 5.3 consist of a cleanup series to remove
  ptrace.h from Christoph Hellwig, who explains:

    'asm-generic/ptrace.h is a little weird in that it doesn't actually
     implement any functionality, but it provided multiple layers of
     macros that just implement trivial inline functions. We implement
     those directly in the few architectures and be off with a much
     simpler design.'

  at https://lore.kernel.org/lkml/20190624054728.30966-1-hch@lst.de/"

* tag 'asm-generic-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic: remove ptrace.h
  x86: don't use asm-generic/ptrace.h
  sh: don't use asm-generic/ptrace.h
  powerpc: don't use asm-generic/ptrace.h
  arm64: don't use asm-generic/ptrace.h
2019-07-12 15:41:33 -07:00
Linus Torvalds aabfea8dc9 s390 updates for the 5.3 merge window #2
- Fix integer overflow during stack frame unwind with invalid backchain.
 
  - Cleanup unused symbol export in zcrypt code.
 
  - Fix MIO addressing control activation in PCI code and expose its
    usage via sysfs.
 
  - Fix kernel image signature verification report presence detection.
 
  - Fix irq registration in vfio-ap code.
 
  - Add CPU measurement counters for newer machines.
 
  - Add base DASD thin provisioning support and code cleanups.
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Merge tag 's390-5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull more s390 updates from Vasily Gorbik:

 - Fix integer overflow during stack frame unwind with invalid
   backchain.

 - Cleanup unused symbol export in zcrypt code.

 - Fix MIO addressing control activation in PCI code and expose its
   usage via sysfs.

 - Fix kernel image signature verification report presence detection.

 - Fix irq registration in vfio-ap code.

 - Add CPU measurement counters for newer machines.

 - Add base DASD thin provisioning support and code cleanups.

* tag 's390-5.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (21 commits)
  s390/unwind: avoid int overflow in outside_of_stack
  s390/zcrypt: remove the exporting of ap_query_configuration
  s390/pci: add mio_enabled attribute
  s390: fix setting of mio addressing control
  s390/ipl: Fix detection of has_secure attribute
  s390: vfio-ap: fix irq registration
  s390/cpumf: Add extended counter set definitions for model 8561 and 8562
  s390/dasd: Handle out-of-space constraint
  s390/dasd: Add discard support for ESE volumes
  s390/dasd: Use ALIGN_DOWN macro
  s390/dasd: Make dasd_setup_queue() a discipline function
  s390/dasd: Add new ioctl to release space
  s390/dasd: Add dasd_sleep_on_queue_interruptible()
  s390/dasd: Add missing intensity definition
  s390/dasd: Fix whitespace
  s390/dasd: Add dynamic formatting support for ESE volumes
  s390/dasd: Recognise data for ESE volumes
  s390/dasd: Put sub-order definitions in a separate section
  s390/dasd: Make layout analysis ESE compatible
  s390/dasd: Remove old defines and function
  ...
2019-07-12 15:39:22 -07:00
Christian Lamparter f32ae8a5f1 net: dsa: qca8k: replace legacy gpio include
This patch replaces the legacy bulk gpio.h include
with the proper gpio/consumer.h variant. This was
caught by the kbuild test robot that was running
into an error because of this.

For more information why linux/gpio.h is bad can be found in:
commit 56a46b6144 ("gpio: Clarify that <linux/gpio.h> is legacy")

Reported-by: kbuild test robot <lkp@intel.com>
Link: https://www.spinics.net/lists/netdev/msg584447.html
Fixes: a653f2f538 ("net: dsa: qca8k: introduce reset via gpio feature")
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Reviewed-by: Vivien Didelot <vivien.didelot@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:38:07 -07:00
Linus Torvalds 7181feb9b7 nios2 update for v5.3-rc1
nios2: configs: Remove useless UEVENT_HELPER_PATH
 nios2: remove pointless second entry for CONFIG_TRACE_IRQFLAGS_SUPPORT
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Merge tag 'nios2-v5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2

Pull arch/nios2 updates from Ley Foon Tan.

* tag 'nios2-v5.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/lftan/nios2:
  nios2: configs: Remove useless UEVENT_HELPER_PATH
  nios2: remove pointless second entry for CONFIG_TRACE_IRQFLAGS_SUPPORT
2019-07-12 15:38:05 -07:00
Jiangfeng Xiao 56170ba3bd net: hisilicon: Use devm_platform_ioremap_resource
Use devm_platform_ioremap_resource instead of
devm_ioremap_resource. Make the code simpler.

Signed-off-by: Jiangfeng Xiao <xiaojiangfeng@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:37:18 -07:00
Arnd Bergmann 752c2ea2d8 cxgb4: reduce kernel stack usage in cudbg_collect_mem_region()
The cudbg_collect_mem_region() and cudbg_read_fw_mem() both use several
hundred kilobytes of kernel stack space. One gets inlined into the other,
which causes the stack usage to be combined beyond the warning limit
when building with clang:

drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c:1057:12: error: stack frame size of 1244 bytes in function 'cudbg_collect_mem_region' [-Werror,-Wframe-larger-than=]

Restructuring cudbg_collect_mem_region() lets clang do the same
optimization that gcc does and reuse the stack slots as it can
see that the large variables are never used together.

A better fix might be to avoid using cudbg_meminfo on the stack
altogether, but that requires a larger rewrite.

Fixes: a1c69520f7 ("cxgb4: collect MC memory dump")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:36:14 -07:00
Linus Torvalds 39d7530d74 ARM:
* support for chained PMU counters in guests
 * improved SError handling
 * handle Neoverse N1 erratum #1349291
 * allow side-channel mitigation status to be migrated
 * standardise most AArch64 system register accesses to msr_s/mrs_s
 * fix host MPIDR corruption on 32bit
 * selftests ckleanups
 
 x86:
 * PMU event {white,black}listing
 * ability for the guest to disable host-side interrupt polling
 * fixes for enlightened VMCS (Hyper-V pv nested virtualization),
 * new hypercall to yield to IPI target
 * support for passing cstate MSRs through to the guest
 * lots of cleanups and optimizations
 
 Generic:
 * Some txt->rST conversions for the documentation
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM updates from Paolo Bonzini:
 "ARM:
   - support for chained PMU counters in guests
   - improved SError handling
   - handle Neoverse N1 erratum #1349291
   - allow side-channel mitigation status to be migrated
   - standardise most AArch64 system register accesses to msr_s/mrs_s
   - fix host MPIDR corruption on 32bit
   - selftests ckleanups

  x86:
   - PMU event {white,black}listing
   - ability for the guest to disable host-side interrupt polling
   - fixes for enlightened VMCS (Hyper-V pv nested virtualization),
   - new hypercall to yield to IPI target
   - support for passing cstate MSRs through to the guest
   - lots of cleanups and optimizations

  Generic:
   - Some txt->rST conversions for the documentation"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (128 commits)
  Documentation: virtual: Add toctree hooks
  Documentation: kvm: Convert cpuid.txt to .rst
  Documentation: virtual: Convert paravirt_ops.txt to .rst
  KVM: x86: Unconditionally enable irqs in guest context
  KVM: x86: PMU Event Filter
  kvm: x86: Fix -Wmissing-prototypes warnings
  KVM: Properly check if "page" is valid in kvm_vcpu_unmap
  KVM: arm/arm64: Initialise host's MPIDRs by reading the actual register
  KVM: LAPIC: Retry tune per-vCPU timer_advance_ns if adaptive tuning goes insane
  kvm: LAPIC: write down valid APIC registers
  KVM: arm64: Migrate _elx sysreg accessors to msr_s/mrs_s
  KVM: doc: Add API documentation on the KVM_REG_ARM_WORKAROUNDS register
  KVM: arm/arm64: Add save/restore support for firmware workaround state
  arm64: KVM: Propagate full Spectre v2 workaround state to KVM guests
  KVM: arm/arm64: Support chained PMU counters
  KVM: arm/arm64: Remove pmc->bitmask
  KVM: arm/arm64: Re-create event when setting counter value
  KVM: arm/arm64: Extract duplicated code to own function
  KVM: arm/arm64: Rename kvm_pmu_{enable/disable}_counter functions
  KVM: LAPIC: ARBPRI is a reserved register for x2APIC
  ...
2019-07-12 15:35:14 -07:00
Chris Packham d12cffe932 tipc: ensure head->lock is initialised
tipc_named_node_up() creates a skb list. It passes the list to
tipc_node_xmit() which has some code paths that can call
skb_queue_purge() which relies on the list->lock being initialised.

The spin_lock is only needed if the messages end up on the receive path
but when the list is created in tipc_named_node_up() we don't
necessarily know if it is going to end up there.

Once all the skb list users are updated in tipc it will then be possible
to update them to use the unlocked variants of the skb list functions
and initialise the lock when we know the message will follow the receive
path.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:34:26 -07:00
Roman Mashak 100c4043b8 tc-tests: updated skbedit tests
- Added mask upper bound test case
- Added mask validation test case
- Added mask replacement case

Signed-off-by: Roman Mashak <mrv@mojatatu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:33:14 -07:00
David S. Miller be4d2a5b07 Merge branch 'nfp-flower-bugs'
John Hurley says:

====================
Fix bugs in NFP flower match offload

This patchset contains bug fixes for corner cases in the match fields of
flower offloads. The patches ensure that flows that should not be
supported are not (incorrectly) offloaded. These include rules that match
on layer 3 and/or 4 data without specified ethernet or ip protocol fields.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:31:55 -07:00
John Hurley 103b7c25f5 nfp: flower: ensure ip protocol is specified for L4 matches
Flower rules on the NFP firmware are able to match on an IP protocol
field. When parsing rules in the driver, unknown IP protocols are only
rejected when further matches are to be carried out on layer 4 fields, as
the firmware will not be able to extract such fields from packets.

L4 protocol dissectors such as FLOW_DISSECTOR_KEY_PORTS are only parsed if
an IP protocol is specified. This leaves a loophole whereby a rule that
attempts to match on transport layer information such as port numbers but
does not explicitly give an IP protocol type can be incorrectly offloaded
(in this case with wildcard port numbers matches).

Fix this by rejecting the offload of flows that attempt to match on L4
information, not only when matching on an unknown IP protocol type, but
also when the protocol is wildcarded.

Fixes: 2a04784594 ("nfp: flower: check L4 matches on unknown IP protocols")
Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:31:55 -07:00
John Hurley fd262a6d8a nfp: flower: fix ethernet check on match fields
NFP firmware does not explicitly match on an ethernet type field. Rather,
each rule has a bitmask of match fields that can be used to infer the
ethernet type.

Currently, if a flower rule contains an unknown ethernet type, a check is
carried out for matches on other fields of the packet. If matches on
layer 3 or 4 are found, then the offload is rejected as firmware will not
be able to extract these fields from a packet with an ethernet type it
does not currently understand.

However, if a rule contains an unknown ethernet type without any L3 (or
above) matches then this will effectively be offloaded as a rule with a
wildcarded ethertype. This can lead to misclassifications on the firmware.

Fix this issue by rejecting all flower rules that specify a match on an
unknown ethernet type.

Further ensure correct offloads by moving the 'L3 and above' check to any
rule that does not specify an ethernet type and rejecting rules with
further matches. This means that we can still offload rules with a
wildcarded ethertype if they only match on L2 fields but will prevent
rules which match on further fields that we cannot be sure if the firmware
will be able to extract.

Fixes: af9d842c13 ("nfp: extend flower add flow offload")
Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:31:55 -07:00
Linus Torvalds 16c97650a5 - Add a module description to the Hyper-V vmbus module.
- Rework some vmbus code to separate architecture specifics out to
 arch/x86/. This is part of the work of adding arm64 support to Hyper-V.
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Merge tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyper-v updates from Sasha Levin:

 - Add a module description to the Hyper-V vmbus module.

 - Rework some vmbus code to separate architecture specifics out to
   arch/x86/. This is part of the work of adding arm64 support to
   Hyper-V.

* tag 'hyperv-next-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  Drivers: hv: vmbus: Break out ISA independent parts of mshyperv.h
  drivers: hv: Add a module description line to the hv_vmbus driver
2019-07-12 15:28:38 -07:00
Vlad Buslov 3929502b95 net/mlx5e: Provide cb_list pointer when setting up tc block on rep
Recent refactoring of tc block offloads infrastructure introduced new
flow_block_cb_setup_simple() method intended to be used as unified way for
all drivers to register offload callbacks. However, commit that actually
extended all users (drivers) with block cb list and provided it to
flow_block infra missed mlx5 en_rep. This leads to following NULL-pointer
dereference when creating Qdisc:

[  278.385175] BUG: kernel NULL pointer dereference, address: 0000000000000000
[  278.393233] #PF: supervisor read access in kernel mode
[  278.399446] #PF: error_code(0x0000) - not-present page
[  278.405847] PGD 8000000850e73067 P4D 8000000850e73067 PUD 8620cd067 PMD 0
[  278.414141] Oops: 0000 [#1] SMP PTI
[  278.419019] CPU: 7 PID: 3369 Comm: tc Not tainted 5.2.0-rc6+ #492
[  278.426580] Hardware name: Supermicro SYS-2028TP-DECR/X10DRT-P, BIOS 2.0b 03/30/2017
[  278.435853] RIP: 0010:flow_block_cb_setup_simple+0xc4/0x190
[  278.442953] Code: 10 48 89 42 08 48 89 10 48 b8 00 01 00 00 00 00 ad de 49 89 00 48 05 00 01 00 00 49 89 40 08 31 c0 c3 b8 a1 ff ff ff c3 f3 c3 <48> 8b 06 48 39 c6 75 0a eb 1a 48 8b 00 48 39 c6 74 12
 48 3b 50 28
[  278.464829] RSP: 0018:ffffaf07c3f97990 EFLAGS: 00010246
[  278.471648] RAX: 0000000000000000 RBX: ffff9b43ed4c7680 RCX: ffff9b43d5f80840
[  278.480408] RDX: ffffffffc0491650 RSI: 0000000000000000 RDI: ffffaf07c3f97998
[  278.489110] RBP: ffff9b43ddff9000 R08: ffff9b43d5f80840 R09: 0000000000000001
[  278.497838] R10: 0000000000000009 R11: 00000000000003ad R12: ffffaf07c3f97c08
[  278.506595] R13: ffff9b43d5f80000 R14: ffff9b43ed4c7680 R15: ffff9b43dfa20b40
[  278.515374] FS:  00007f796be1b400(0000) GS:ffff9b43ef840000(0000) knlGS:0000000000000000
[  278.525099] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  278.532453] CR2: 0000000000000000 CR3: 0000000840398002 CR4: 00000000001606e0
[  278.541197] Call Trace:
[  278.545252]  tcf_block_offload_cmd.isra.52+0x7e/0xb0
[  278.551871]  tcf_block_get_ext+0x365/0x3e0
[  278.557569]  qdisc_create+0x15c/0x4e0
[  278.562859]  ? kmem_cache_alloc_trace+0x1a2/0x1c0
[  278.569235]  tc_modify_qdisc+0x1c8/0x780
[  278.574761]  rtnetlink_rcv_msg+0x291/0x340
[  278.580518]  ? _cond_resched+0x15/0x40
[  278.585856]  ? rtnl_calcit.isra.29+0x120/0x120
[  278.591868]  netlink_rcv_skb+0x4a/0x110
[  278.597198]  netlink_unicast+0x1a0/0x250
[  278.602601]  netlink_sendmsg+0x2c1/0x3c0
[  278.608022]  sock_sendmsg+0x5b/0x60
[  278.612969]  ___sys_sendmsg+0x289/0x310
[  278.618231]  ? do_wp_page+0x99/0x730
[  278.623216]  ? page_add_new_anon_rmap+0xbe/0x140
[  278.629298]  ? __handle_mm_fault+0xc84/0x1360
[  278.635113]  ? __sys_sendmsg+0x5e/0xa0
[  278.640285]  __sys_sendmsg+0x5e/0xa0
[  278.645239]  do_syscall_64+0x5b/0x1b0
[  278.650274]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[  278.656697] RIP: 0033:0x7f796abdeb87
[  278.661628] Code: 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 80 00 00 00 00 8b 05 6a 2b 2c 00 48 63 d2 48 63 ff 85 c0 75 18 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 59 f3 c3 0f 1f 80 00 00 00 00 53
 48 89 f3 48
[  278.683248] RSP: 002b:00007ffde213ba48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  278.692245] RAX: ffffffffffffffda RBX: 000000005d261e6f RCX: 00007f796abdeb87
[  278.700862] RDX: 0000000000000000 RSI: 00007ffde213bab0 RDI: 0000000000000003
[  278.709527] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000006
[  278.718167] R10: 000000000000000c R11: 0000000000000246 R12: 0000000000000001
[  278.726743] R13: 000000000067b580 R14: 0000000000000000 R15: 0000000000000000
[  278.735302] Modules linked in: dummy vxlan ip6_udp_tunnel udp_tunnel sch_ingress nfsv3 nfs_acl nfs lockd grace fscache bridge stp llc sunrpc mlx5_ib ib_uverbs intel_rapl ib_core sb_edac x86_pkg_temp_
thermal intel_powerclamp coretemp kvm_intel kvm mlx5_core irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel igb ghash_clmulni_intel ses mei_me enclosure mlxfw ipmi_ssif intel_cstate iTCO_wdt ptp mei
pps_core iTCO_vendor_support pcspkr joydev intel_uncore i2c_i801 ipmi_si lpc_ich intel_rapl_perf ioatdma wmi dca pcc_cpufreq ipmi_devintf ipmi_msghandler acpi_power_meter acpi_pad ast i2c_algo_bit drm_k
ms_helper ttm drm mpt3sas raid_class scsi_transport_sas
[  278.802263] CR2: 0000000000000000
[  278.807170] ---[ end trace b1f0a442a279e66f ]---

Extend en_rep with new static mlx5e_rep_block_cb_list list and pass it to
flow_block_cb_setup_simple() function instead of hardcoded NULL pointer.

Fixes: 955bcb6ea0 ("drivers: net: use flow block API")
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:27:41 -07:00
Denis Efremov 54638c6eaf net: phy: make exported variables non-static
The variables phy_basic_ports_array, phy_fibre_port_array and
phy_all_ports_features_array are declared static and marked
EXPORT_SYMBOL_GPL(), which is at best an odd combination.
Because the variables were decided to be a part of API, this commit
removes the static attributes and adds the declarations to the header.

Fixes: 3c1bcc8614 ("net: ethernet: Convert phydev advertize and supported from u32 to link mode")
Signed-off-by: Denis Efremov <efremov@linux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:26:29 -07:00
Vlad Buslov c1a970d06f net: sched: Fix NULL-pointer dereference in tc_indr_block_ing_cmd()
After recent refactoring of block offlads infrastructure, indr_dev->block
pointer is dereferenced before it is verified to be non-NULL. Example stack
trace where this behavior leads to NULL-pointer dereference error when
creating vxlan dev on system with mlx5 NIC with offloads enabled:

[ 1157.852938] ==================================================================
[ 1157.866877] BUG: KASAN: null-ptr-deref in tc_indr_block_ing_cmd.isra.41+0x9c/0x160
[ 1157.880877] Read of size 4 at addr 0000000000000090 by task ip/3829
[ 1157.901637] CPU: 22 PID: 3829 Comm: ip Not tainted 5.2.0-rc6+ #488
[ 1157.914438] Hardware name: Supermicro SYS-2028TP-DECR/X10DRT-P, BIOS 2.0b 03/30/2017
[ 1157.929031] Call Trace:
[ 1157.938318]  dump_stack+0x9a/0xeb
[ 1157.948362]  ? tc_indr_block_ing_cmd.isra.41+0x9c/0x160
[ 1157.960262]  ? tc_indr_block_ing_cmd.isra.41+0x9c/0x160
[ 1157.972082]  __kasan_report+0x176/0x192
[ 1157.982513]  ? tc_indr_block_ing_cmd.isra.41+0x9c/0x160
[ 1157.994348]  kasan_report+0xe/0x20
[ 1158.004324]  tc_indr_block_ing_cmd.isra.41+0x9c/0x160
[ 1158.015950]  ? tcf_block_setup+0x430/0x430
[ 1158.026558]  ? kasan_unpoison_shadow+0x30/0x40
[ 1158.037464]  __tc_indr_block_cb_register+0x5f5/0xf20
[ 1158.049288]  ? mlx5e_rep_indr_tc_block_unbind+0xa0/0xa0 [mlx5_core]
[ 1158.062344]  ? tc_indr_block_dev_put.part.47+0x5c0/0x5c0
[ 1158.074498]  ? rdma_roce_rescan_device+0x20/0x20 [ib_core]
[ 1158.086580]  ? br_device_event+0x98/0x480 [bridge]
[ 1158.097870]  ? strcmp+0x30/0x50
[ 1158.107578]  mlx5e_nic_rep_netdevice_event+0xdd/0x180 [mlx5_core]
[ 1158.120212]  notifier_call_chain+0x6d/0xa0
[ 1158.130753]  register_netdevice+0x6fc/0x7e0
[ 1158.141322]  ? netdev_change_features+0xa0/0xa0
[ 1158.152218]  ? vxlan_config_apply+0x210/0x310 [vxlan]
[ 1158.163593]  __vxlan_dev_create+0x2ad/0x520 [vxlan]
[ 1158.174770]  ? vxlan_changelink+0x490/0x490 [vxlan]
[ 1158.185870]  ? rcu_read_unlock+0x60/0x60 [vxlan]
[ 1158.196798]  vxlan_newlink+0x99/0xf0 [vxlan]
[ 1158.207303]  ? __vxlan_dev_create+0x520/0x520 [vxlan]
[ 1158.218601]  ? rtnl_create_link+0x3d0/0x450
[ 1158.228900]  __rtnl_newlink+0x8a7/0xb00
[ 1158.238701]  ? stack_access_ok+0x35/0x80
[ 1158.248450]  ? rtnl_link_unregister+0x1a0/0x1a0
[ 1158.258735]  ? find_held_lock+0x6d/0xd0
[ 1158.268379]  ? is_bpf_text_address+0x67/0xf0
[ 1158.278330]  ? lock_acquire+0xc1/0x1f0
[ 1158.287686]  ? is_bpf_text_address+0x5/0xf0
[ 1158.297449]  ? is_bpf_text_address+0x86/0xf0
[ 1158.307310]  ? kernel_text_address+0xec/0x100
[ 1158.317155]  ? arch_stack_walk+0x92/0xe0
[ 1158.326497]  ? __kernel_text_address+0xe/0x30
[ 1158.336213]  ? unwind_get_return_address+0x2f/0x50
[ 1158.346267]  ? create_prof_cpu_mask+0x20/0x20
[ 1158.355936]  ? arch_stack_walk+0x92/0xe0
[ 1158.365117]  ? stack_trace_save+0x8a/0xb0
[ 1158.374272]  ? stack_trace_consume_entry+0x80/0x80
[ 1158.384226]  ? match_held_lock+0x33/0x210
[ 1158.393216]  ? kasan_unpoison_shadow+0x30/0x40
[ 1158.402593]  rtnl_newlink+0x53/0x80
[ 1158.410925]  rtnetlink_rcv_msg+0x3a5/0x600
[ 1158.419777]  ? validate_linkmsg+0x400/0x400
[ 1158.428620]  ? find_held_lock+0x6d/0xd0
[ 1158.437117]  ? match_held_lock+0x1b/0x210
[ 1158.445760]  ? validate_linkmsg+0x400/0x400
[ 1158.454642]  netlink_rcv_skb+0xc7/0x1f0
[ 1158.463150]  ? netlink_ack+0x470/0x470
[ 1158.471538]  ? netlink_deliver_tap+0x1f3/0x5a0
[ 1158.480607]  netlink_unicast+0x2ae/0x350
[ 1158.489099]  ? netlink_attachskb+0x340/0x340
[ 1158.497935]  ? _copy_from_iter_full+0xde/0x3b0
[ 1158.506945]  ? __virt_addr_valid+0xb6/0xf0
[ 1158.515578]  ? __check_object_size+0x159/0x240
[ 1158.524515]  netlink_sendmsg+0x4d3/0x630
[ 1158.532879]  ? netlink_unicast+0x350/0x350
[ 1158.541400]  ? netlink_unicast+0x350/0x350
[ 1158.549805]  sock_sendmsg+0x94/0xa0
[ 1158.557561]  ___sys_sendmsg+0x49d/0x570
[ 1158.565625]  ? copy_msghdr_from_user+0x210/0x210
[ 1158.574457]  ? __fput+0x1e2/0x330
[ 1158.581948]  ? __kasan_slab_free+0x130/0x180
[ 1158.590407]  ? kmem_cache_free+0xb6/0x2d0
[ 1158.598574]  ? mark_lock+0xc7/0x790
[ 1158.606177]  ? task_work_run+0xcf/0x100
[ 1158.614165]  ? exit_to_usermode_loop+0x102/0x110
[ 1158.622954]  ? __lock_acquire+0x963/0x1ee0
[ 1158.631199]  ? lockdep_hardirqs_on+0x260/0x260
[ 1158.639777]  ? match_held_lock+0x1b/0x210
[ 1158.647918]  ? lockdep_hardirqs_on+0x260/0x260
[ 1158.656501]  ? match_held_lock+0x1b/0x210
[ 1158.664643]  ? __fget_light+0xa6/0xe0
[ 1158.672423]  ? __sys_sendmsg+0xd2/0x150
[ 1158.680334]  __sys_sendmsg+0xd2/0x150
[ 1158.688063]  ? __ia32_sys_shutdown+0x30/0x30
[ 1158.696435]  ? lock_downgrade+0x2e0/0x2e0
[ 1158.704541]  ? mark_held_locks+0x1a/0x90
[ 1158.712611]  ? mark_held_locks+0x1a/0x90
[ 1158.720619]  ? do_syscall_64+0x1e/0x2c0
[ 1158.728530]  do_syscall_64+0x78/0x2c0
[ 1158.736254]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[ 1158.745414] RIP: 0033:0x7f62d505cb87
[ 1158.753070] Code: 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 80 00 00 00 00 8b 05 6a 2b 2c 00 48 63 d2 48 63 ff 85 c0 75 18 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 59 f3 c3 0f 1f 80 00 00[87/1817]
 48 89 f3 48
[ 1158.780924] RSP: 002b:00007fffd9832268 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 1158.793204] RAX: ffffffffffffffda RBX: 000000005d26048f RCX: 00007f62d505cb87
[ 1158.805111] RDX: 0000000000000000 RSI: 00007fffd98322d0 RDI: 0000000000000003
[ 1158.817055] RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000006
[ 1158.828987] R10: 00007f62d50ce260 R11: 0000000000000246 R12: 0000000000000001
[ 1158.840909] R13: 000000000067e540 R14: 0000000000000000 R15: 000000000067ed20
[ 1158.852873] ==================================================================

Introduce new function tcf_block_non_null_shared() that verifies block
pointer before dereferencing it to obtain index. Use the function in
tc_indr_block_ing_cmd() to prevent NULL pointer dereference.

Fixes: 955bcb6ea0 ("drivers: net: use flow block API")
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:21:53 -07:00
Arnd Bergmann c653f61a7f davinci_cpdma: don't cast dma_addr_t to pointer
dma_addr_t may be 64-bit wide on 32-bit architectures, so it is not
valid to cast between it and a pointer:

drivers/net/ethernet/ti/davinci_cpdma.c: In function 'cpdma_chan_submit_si':
drivers/net/ethernet/ti/davinci_cpdma.c:1047:12: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
drivers/net/ethernet/ti/davinci_cpdma.c: In function 'cpdma_chan_idle_submit_mapped':
drivers/net/ethernet/ti/davinci_cpdma.c:1114:12: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]
drivers/net/ethernet/ti/davinci_cpdma.c: In function 'cpdma_chan_submit_mapped':
drivers/net/ethernet/ti/davinci_cpdma.c:1164:12: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast]

Solve this by using two separate members in 'struct submit_info'.
Since this avoids the use of the 'flag' member, the structure does
not even grow in typical configurations.

Fixes: 6670acacd5 ("net: ethernet: ti: davinci_cpdma: add dma mapped submit")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:19:37 -07:00
Taehee Yoo 6b660c4177 net: openvswitch: do not update max_headroom if new headroom is equal to old headroom
When a vport is deleted, the maximum headroom size would be changed.
If the vport which has the largest headroom is deleted,
the new max_headroom would be set.
But, if the new headroom size is equal to the old headroom size,
updating routine is unnecessary.

Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Tested-by: Greg Rose <gvrose8192@gmail.com>
Reviewed-by: Greg Rose <gvrose8192@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2019-07-12 15:16:58 -07:00
Linus Torvalds 9e3a25dc99 dma-mapping updates for Linux 5.3
- move the USB special case that bounced DMA through a device
    bar into the USB code instead of handling it in the common
    DMA code (Laurentiu Tudor and Fredrik Noring)
  - don't dip into the global CMA pool for single page allocations
    (Nicolin Chen)
  - fix a crash when allocating memory for the atomic pool failed
    during boot (Florian Fainelli)
  - move support for MIPS-style uncached segments to the common
    code and use that for MIPS and nios2 (me)
  - make support for DMA_ATTR_NON_CONSISTENT and
    DMA_ATTR_NO_KERNEL_MAPPING generic (me)
  - convert nds32 to the generic remapping allocator (me)
 -----BEGIN PGP SIGNATURE-----
 
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Merge tag 'dma-mapping-5.3' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping updates from Christoph Hellwig:

 - move the USB special case that bounced DMA through a device bar into
   the USB code instead of handling it in the common DMA code (Laurentiu
   Tudor and Fredrik Noring)

 - don't dip into the global CMA pool for single page allocations
   (Nicolin Chen)

 - fix a crash when allocating memory for the atomic pool failed during
   boot (Florian Fainelli)

 - move support for MIPS-style uncached segments to the common code and
   use that for MIPS and nios2 (me)

 - make support for DMA_ATTR_NON_CONSISTENT and
   DMA_ATTR_NO_KERNEL_MAPPING generic (me)

 - convert nds32 to the generic remapping allocator (me)

* tag 'dma-mapping-5.3' of git://git.infradead.org/users/hch/dma-mapping: (29 commits)
  dma-mapping: mark dma_alloc_need_uncached as __always_inline
  MIPS: only select ARCH_HAS_UNCACHED_SEGMENT for non-coherent platforms
  usb: host: Fix excessive alignment restriction for local memory allocations
  lib/genalloc.c: Add algorithm, align and zeroed family of DMA allocators
  nios2: use the generic uncached segment support in dma-direct
  nds32: use the generic remapping allocator for coherent DMA allocations
  arc: use the generic remapping allocator for coherent DMA allocations
  dma-direct: handle DMA_ATTR_NO_KERNEL_MAPPING in common code
  dma-direct: handle DMA_ATTR_NON_CONSISTENT in common code
  dma-mapping: add a dma_alloc_need_uncached helper
  openrisc: remove the partial DMA_ATTR_NON_CONSISTENT support
  arc: remove the partial DMA_ATTR_NON_CONSISTENT support
  arm-nommu: remove the partial DMA_ATTR_NON_CONSISTENT support
  ARM: dma-mapping: allow larger DMA mask than supported
  dma-mapping: truncate dma masks to what dma_addr_t can hold
  iommu/dma: Apply dma_{alloc,free}_contiguous functions
  dma-remap: Avoid de-referencing NULL atomic_pool
  MIPS: use the generic uncached segment support in dma-direct
  dma-direct: provide generic support for uncached kernel segments
  au1100fb: fix DMA API abuse
  ...
2019-07-12 15:13:55 -07:00
Bjorn Helgaas 7b4b0f6b34 Merge branch 'pci/trivial'
- Fix typos and whitespace errors (Bjorn Helgaas)

* pci/trivial:
  PCI: Fix typos and whitespace errors
2019-07-12 17:08:41 -05:00
Bjorn Helgaas 31d5a608b1 Merge branch 'remotes/lorenzo/pci/misc'
- Fix pcitest build issues (Alan Mikhak)

  - Fix pcitest installation issue (Andy Shevchenko)

* remotes/lorenzo/pci/misc:
  tools: PCI: Fix installation when `make tools/pci_install`
  tools: PCI: Fix compiler warning in pcitest
  tools: PCI: Fix broken pcitest compilation
2019-07-12 17:08:40 -05:00
Bjorn Helgaas 950cfbf0a5 Merge branch 'remotes/lorenzo/pci/endpoint'
- Complete PCI endpoint removal so a subsequent add doesn't fail with
    -EBUSY (Alan Mikhak)

  - Pay attention to PCI endpoint fixed-size BARs (Alan Mikhak)

  - Fix PCI endpoint handling of 64bit BARs (Alan Mikhak)

  - Clear PCI endpoint BARs before freeing space (Alan Mikhak)

* remotes/lorenzo/pci/endpoint:
  PCI: endpoint: Clear BAR before freeing its space
  PCI: endpoint: Skip odd BAR when skipping 64bit BAR
  PCI: endpoint: Allocate enough space for fixed size BAR
  PCI: endpoint: Set endpoint controller pointer to NULL
2019-07-12 17:08:39 -05:00
Bjorn Helgaas 916f12e494 Merge branch 'remotes/lorenzo/pci/xilinx'
- Fix Xilinx NWL multi-MSI vector aliasing issue (Bharat Kumar Gogada)

* remotes/lorenzo/pci/xilinx:
  PCI: xilinx-nwl: Fix Multi MSI data programming
2019-07-12 17:08:38 -05:00
Bjorn Helgaas 6bfc0c07cd Merge branch 'remotes/lorenzo/pci/tegra'
- Reorganize Tegra AFI/PHY/REFCLK/etc functions (Manikanta Maddireddy)

  - Mask Tegra AFI_INTR in runtime suspend (Manikanta Maddireddy)

  - Fix Tegra AFI/PCIe powerup sequence (Manikanta Maddireddy)

  - Add Tegra124, Tegra132, Tegra210, and Tegra186 support for Gen2 link
    speed (Manikanta Maddireddy)

  - Advertise Tegra AER support (Manikanta Maddireddy)

  - Program Tegra210 UPHY settings (Manikanta Maddireddy)

  - Enable Tegra opportunistic UpdateFC and ACK (Manikanta Maddireddy)

  - Disable Tegra AFI dynamic clock gating (Manikanta Maddireddy)

  - Process Tegra pending DLL transactions before entering L1 or L2 to
    prevent receiver errors (Manikanta Maddireddy)

  - Enable Tegra xclk clock clamping in L1 (Manikanta Maddireddy)

  - Increase Tegra deskew retry time (Manikanta Maddireddy)

  - Work around Tegra hardware RAW erratum (Manikanta Maddireddy)

  - Update Tegra210 flow control timer frequency (Manikanta Maddireddy)

  - Work around Tegra Gen1/Gen2 link number negotiation issue (Manikanta
    Maddireddy)

  - Work around Tegra PLLE power down issue (Manikanta Maddireddy)

  - Program Tegra20 to support cacheable upstream transactions (Manikanta
    Maddireddy)

  - Log Tegra PRSNT_SENSE_IRQ as debug, not err (Manikanta Maddireddy)

  - Add register offset for third Root Port on Tegra186 and Tegra30
    (Manikanta Maddireddy)

  - Document Tegra PCIe DPD pinctrl property (Manikanta Maddireddy)

  - Put Tegra PEX CLK & BIAS pads in DPD mode to reduce power usage when
    powergated (Manikanta Maddireddy)

  - Add generic DT binding for "reset-gpios" property (Manikanta
    Maddireddy)

  - Add Tegra support for GPIO-based PERST# (Manikanta Maddireddy)

  - Enable Relaxed Ordering only for Tegra20 & Tegra30 (Vidya Sagar)

* remotes/lorenzo/pci/tegra:
  PCI: tegra: Enable Relaxed Ordering only for Tegra20 & Tegra30
  PCI: tegra: Change link retry log level to debug
  PCI: tegra: Add support for GPIO based PERST#
  PCI: Add DT binding for "reset-gpios" property
  PCI: tegra: Put PEX CLK & BIAS pads in DPD mode
  dt-bindings: pci: tegra: Document PCIe DPD pinctrl optional prop
  PCI: tegra: Add AFI_PEX2_CTRL reg offset as part of SoC struct
  PCI: tegra: Change PRSNT_SENSE IRQ log to debug
  PCI: tegra: Program AFI_CACHE_BAR_{0,1}_{ST,SZ} registers only for Tegra20
  PCI: tegra: Fix PLLE power down issue due to CLKREQ# signal
  PCI: tegra: Set target speed as Gen1 before starting LTSSM
  PCI: tegra: Update flow control timer frequency in Tegra210
  PCI: tegra: Add SW fixup for RAW violations
  PCI: tegra: Increase the deskew retry time
  PCI: tegra: Enable PCIe xclk clock clamping
  PCI: tegra: Process pending DLL transactions before entering L1 or L2
  PCI: tegra: Disable AFI dynamic clock gating
  PCI: tegra: Enable opportunistic UpdateFC and ACK
  PCI: tegra: Program UPHY electrical settings for Tegra210
  PCI: tegra: Advertise PCIe Advanced Error Reporting (AER) capability
  PCI: tegra: Add PCIe Gen2 link speed support
  PCI: tegra: Fix PCIe host power up sequence
  PCI: tegra: Mask AFI_INTR in runtime suspend
  PCI: tegra: Rearrange Tegra PCIe driver functions
  PCI: tegra: Handle failure cases in tegra_pcie_power_on()
  soc/tegra: pmc: Export tegra_powergate_power_on()
2019-07-12 17:08:37 -05:00
Bjorn Helgaas e3a9d56966 Merge branch 'remotes/lorenzo/pci/rcar'
- Add R-Car device tree support for r8a774a1 (Biju Das)

* remotes/lorenzo/pci/rcar:
  dt-bindings: PCI: rcar: Add device tree support for r8a774a1
2019-07-12 17:08:36 -05:00
Bjorn Helgaas 757410bd97 Merge branch 'remotes/lorenzo/pci/qcom'
- Move qcom driver to bulk clock API (Bjorn Andersson)

  - Add Qualcomm QCS404 PCIe controller support (Bjorn Andersson)

  - Ensure Qualcomm PERST is asserted for at least 100ms (Niklas Cassel)

* remotes/lorenzo/pci/qcom:
  PCI: qcom: Ensure that PERST is asserted for at least 100 ms
  PCI: qcom: Add QCS404 PCIe controller support
  dt-bindings: PCI: qcom: Add QCS404 to the binding
  PCI: qcom: Use clk bulk API for 2.4.0 controllers
2019-07-12 17:08:35 -05:00