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Commit Graph

857289 Commits

Author SHA1 Message Date
Roman Gushchin
b4c46484dc mm, memcg: partially revert "mm/memcontrol.c: keep local VM counters in sync with the hierarchical ones"
Commit 766a4c19d8 ("mm/memcontrol.c: keep local VM counters in sync
with the hierarchical ones") effectively decreased the precision of
per-memcg vmstats_local and per-memcg-per-node lruvec percpu counters.

That's good for displaying in memory.stat, but brings a serious
regression into the reclaim process.

One issue I've discovered and debugged is the following:
lruvec_lru_size() can return 0 instead of the actual number of pages in
the lru list, preventing the kernel to reclaim last remaining pages.
Result is yet another dying memory cgroups flooding.  The opposite is
also happening: scanning an empty lru list is the waste of cpu time.

Also, inactive_list_is_low() can return incorrect values, preventing the
active lru from being scanned and freed.  It can fail both because the
size of active and inactive lists are inaccurate, and because the number
of workingset refaults isn't precise.  In other words, the result is
pretty random.

I'm not sure, if using the approximate number of slab pages in
count_shadow_number() is acceptable, but issues described above are
enough to partially revert the patch.

Let's keep per-memcg vmstat_local batched (they are only used for
displaying stats to the userspace), but keep lruvec stats precise.  This
change fixes the dead memcg flooding on my setup.

Link: http://lkml.kernel.org/r/20190817004726.2530670-1-guro@fb.com
Fixes: 766a4c19d8 ("mm/memcontrol.c: keep local VM counters in sync with the hierarchical ones")
Signed-off-by: Roman Gushchin <guro@fb.com>
Acked-by: Yafang Shao <laoar.shao@gmail.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-08-30 18:00:50 -07:00
Andrew Morton
441e254cd4 mm/zsmalloc.c: fix build when CONFIG_COMPACTION=n
Fixes: 701d678599 ("mm/zsmalloc.c: fix race condition in zs_destroy_pool")
Link: http://lkml.kernel.org/r/201908251039.5oSbEEUT%25lkp@intel.com
Reported-by: kbuild test robot <lkp@intel.com>
Cc: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Henry Burns <henrywolfeburns@gmail.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Shakeel Butt <shakeelb@google.com>
Cc: Jonathan Adams <jwadams@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-08-30 18:00:50 -07:00
Roman Gushchin
bee07b33db mm: memcontrol: flush percpu slab vmstats on kmem offlining
I've noticed that the "slab" value in memory.stat is sometimes 0, even
if some children memory cgroups have a non-zero "slab" value.  The
following investigation showed that this is the result of the kmem_cache
reparenting in combination with the per-cpu batching of slab vmstats.

At the offlining some vmstat value may leave in the percpu cache, not
being propagated upwards by the cgroup hierarchy.  It means that stats
on ancestor levels are lower than actual.  Later when slab pages are
released, the precise number of pages is substracted on the parent
level, making the value negative.  We don't show negative values, 0 is
printed instead.

To fix this issue, let's flush percpu slab memcg and lruvec stats on
memcg offlining.  This guarantees that numbers on all ancestor levels
are accurate and match the actual number of outstanding slab pages.

Link: http://lkml.kernel.org/r/20190819202338.363363-3-guro@fb.com
Fixes: fb2f2b0adb ("mm: memcg/slab: reparent memcg kmem_caches on cgroup removal")
Signed-off-by: Roman Gushchin <guro@fb.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-08-30 18:00:50 -07:00
Eric Biggers
846d2db3e0 keys: ensure that ->match_free() is called in request_key_and_link()
If check_cached_key() returns a non-NULL value, we still need to call
key_type::match_free() to undo key_type::match_preparse().

Fixes: 7743c48e54 ("keys: Cache result of request_key*() temporarily in task_struct")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2019-08-30 11:10:55 -07:00
Linus Torvalds
e8d6766f3c ARM: SoC fixes
The majority of the fixes this time are for OMAP hardware,
 here is a breakdown of the significant changes:
 
 Various device tree bug fixes:
 - TI am57xx boards need a voltage level fix to avoid damaging SD cards
 - vf610-bk4 fails to detect its flash due to an incorrect description
 - meson-g12a USB phy configuration fails
 - meson-g12b reboot should not power off the SD card
 - Some corrections for apparently harmless differences from the
   documentation.
 
 Regression fixes:
 - ams-delta FIQ interrupts broke in 5.3
 - TI am3/am4 mmc controllers broke in 5.2
 
 The logic_pio driver (used on some Huawei ARM servers) needs a few
 bug fixes for reliability.
 
 A couple of compile-time warning fixes
 
 Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "The majority of the fixes this time are for OMAP hardware, here is a
  breakdown of the significant changes:

  Various device tree bug fixes:
   - TI am57xx boards need a voltage level fix to avoid damaging SD
     cards
   - vf610-bk4 fails to detect its flash due to an incorrect description
   - meson-g12a USB phy configuration fails
   - meson-g12b reboot should not power off the SD card
   - Some corrections for apparently harmless differences from the
     documentation.

  Regression fixes:
   - ams-delta FIQ interrupts broke in 5.3
   - TI am3/am4 mmc controllers broke in 5.2

  The logic_pio driver (used on some Huawei ARM servers) got a few bug
  fixes for reliability.

  And a couple of compile-time warning fixes"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (26 commits)
  soc: ixp4xx: Protect IXP4xx SoC drivers by ARCH_IXP4XX || COMPILE_TEST
  soc: ti: pm33xx: Make two symbols static
  soc: ti: pm33xx: Fix static checker warnings
  ARM: OMAP: dma: Mark expected switch fall-throughs
  ARM: dts: Fix incomplete dts data for am3 and am4 mmc
  bus: ti-sysc: Simplify cleanup upon failures in sysc_probe()
  ARM: OMAP1: ams-delta-fiq: Fix missing irq_ack
  ARM: dts: dra74x: Fix iodelay configuration for mmc3
  ARM: dts: am335x: Fix UARTs length
  ARM: OMAP2+: Fix omap4 errata warning on other SoCs
  bus: hisi_lpc: Add .remove method to avoid driver unbind crash
  bus: hisi_lpc: Unregister logical PIO range to avoid potential use-after-free
  lib: logic_pio: Add logic_pio_unregister_range()
  lib: logic_pio: Avoid possible overlap for unregistering regions
  lib: logic_pio: Fix RCU usage
  arm64: dts: amlogic: odroid-n2: keep SD card regulator always on
  arm64: dts: meson-g12a-sei510: enable IR controller
  arm64: dts: meson-g12a: add missing dwc2 phy-names
  ARM: dts: vf610-bk4: Fix qspi node description
  ARM: dts: Fix incorrect dcan register mapping for am3, am4 and dra7
  ...
2019-08-30 10:53:12 -07:00
Linus Torvalds
8fb8e9e462 Pull request for 5.3-rc6
- Fix locking on list traversal (siw)
 
 Signed-off-by: Doug Ledford <dledford@redhat.com>
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fix from Doug Ledford:
 "Much calmer week this week.  Just one patch queued up:

  The way the siw driver was locking around the traversal of the list of
  ipv6 addresses on a device was causing a scheduling while atomic
  issue. Bernard straightened it out by using the rtnl_lock"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/siw: Fix IPv6 addr_list locking
2019-08-30 09:23:45 -07:00
Linus Torvalds
fbcb0b4feb A fix for a -rc1 regression in rbd and a trivial static checker fix.
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Merge tag 'ceph-for-5.3-rc7' of git://github.com/ceph/ceph-client

Pull two ceph fixes from Ilya Dryomov:
 "A fix for a -rc1 regression in rbd and a trivial static checker fix"

* tag 'ceph-for-5.3-rc7' of git://github.com/ceph/ceph-client:
  rbd: restore zeroing past the overlap when reading from parent
  libceph: don't call crypto_free_sync_skcipher() on a NULL tfm
2019-08-30 09:09:54 -07:00
Linus Torvalds
0d70787b65 MMC core:
- Fix init of SD cards reporting an invalid VDD range
 
 MMC host:
  - sdhci-sprd: Fixes for clocks, card-detect, write-protect etc
  - sdhci-cadence: Fix ADMA 64-bit addressing
  - sdhci-tegra: Re-allow writing to SD card when GPIO pin is absent
  - sdhci-of-at91: Fix eMMC init by clearing HS200 cap as it's not supported
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Merge tag 'mmc-v5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC core:
   - Fix init of SD cards reporting an invalid VDD range

  MMC host:
   - sprd: Fixes for clocks, card-detect, write-protect etc
   - cadence: Fix ADMA 64-bit addressing
   - tegra: Re-allow writing to SD card when GPIO pin is absent
   - at91: Fix eMMC init by clearing HS200 cap as it's not supported"

* tag 'mmc-v5.3-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-cadence: enable v4_mode to fix ADMA 64-bit addressing
  mmc: sdhci-sprd: clear the UHS-I modes read from registers
  mms: sdhci-sprd: add SDHCI_QUIRK_BROKEN_CARD_DETECTION
  mmc: sdhci-sprd: add SDHCI_QUIRK2_PRESET_VALUE_BROKEN
  mmc: sdhci-sprd: add get_ro hook function
  mmc: sdhci-sprd: fixed incorrect clock divider
  mmc: core: Fix init of SD cards reporting an invalid VDD range
  mmc: sdhci-of-at91: add quirk for broken HS200
  Revert "mmc: sdhci-tegra: drop ->get_ro() implementation"
2019-08-30 08:32:10 -07:00
Linus Torvalds
f69f199271 drm fixes for 5.3-rc7
amdgpu:
 - Fix GFXOFF regression for PCO and RV2
 - Fix missing fence reference
 - Fix VG20 power readings on certain SMU firmware versions
 - Fix dpm level setup for VG20
 - Add an ATPX laptop quirk
 
 i915:
 - Fix DP MST max BPC property creation after DRM register
 - Fix unused ggtt deballooning and NULL dereference in guest
 - Fix DSC eDP transcoder identification
 - Fix WARN from DMA API debug by setting DMA max segment size
 
 qxl:
 - Make qxl reservel the vga ports using vgaargb to prevent switching to vga compatibility mode.
 
 omap:
 - Fix omap port lookup for SDI output
 
 virtio:
 - Use virtio_max_dma_size to fix an issue with swiotlb.
 
 komeda:
 - Compiler fixes to komeda.
 - Add missing of_node_get() call in komeda.
 - Reorder the komeda de-init functions.
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Merge tag 'drm-fixes-2019-08-30' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "Nothing too crazy, there's probably more patches than I'd like at this
  stage, but they are all pretty self contained:

  amdgpu:
   - Fix GFXOFF regression for PCO and RV2
   - Fix missing fence reference
   - Fix VG20 power readings on certain SMU firmware versions
   - Fix dpm level setup for VG20
   - Add an ATPX laptop quirk

  i915:
   - Fix DP MST max BPC property creation after DRM register
   - Fix unused ggtt deballooning and NULL dereference in guest
   - Fix DSC eDP transcoder identification
   - Fix WARN from DMA API debug by setting DMA max segment size

  qxl:
   - Make qxl reservel the vga ports using vgaargb to prevent switching to vga compatibility mode.

  omap:
   - Fix omap port lookup for SDI output

  virtio:
   - Use virtio_max_dma_size to fix an issue with swiotlb.

  komeda:
   - Compiler fixes to komeda.
   - Add missing of_node_get() call in komeda.
   - Reorder the komeda de-init functions"

* tag 'drm-fixes-2019-08-30' of git://anongit.freedesktop.org/drm/drm:
  drm/komeda: Reordered the komeda's de-init functions
  drm/amdgpu: fix GFXOFF on Picasso and Raven2
  drm/amdgpu: Add APTX quirk for Dell Latitude 5495
  drm/amd/powerplay: correct Vega20 dpm level related settings
  drm/i915: Call dma_set_max_seg_size() in i915_driver_hw_probe()
  drm/i915/dp: Fix DSC enable code to use cpu_transcoder instead of encoder->type
  drm/i915: Don't deballoon unused ggtt drm_mm_node in linux guest
  drm/i915: Do not create a new max_bpc prop for MST connectors
  drm/powerplay: Fix Vega20 power reading again
  drm/powerplay: Fix Vega20 Average Power value v4
  drm/amdgpu: fix dma_fence_wait without reference
  drm/komeda: Add missing of_node_get() call
  drm/komeda: Clean warning 'komeda_component_add' might be a candidate for 'gnu_printf'
  drm/komeda: Fix warning -Wunused-but-set-variable
  drm/komeda: Fix error: not allocating enough data 1592 vs 1584
  drm/virtio: use virtio_max_dma_size
  drm/omap: Fix port lookup for SDI output
  drm/qxl: get vga ioports
2019-08-30 08:21:24 -07:00
Masahiro Yamada
e73a3896ea mmc: sdhci-cadence: enable v4_mode to fix ADMA 64-bit addressing
The IP datasheet says this controller is compatible with SD Host
Specification Version v4.00.

As it turned out, the ADMA of this IP does not work with 64-bit mode
when it is in the Version 3.00 compatible mode; it understands the
old 64-bit descriptor table (as defined in SDHCI v2), but the ADMA
System Address Register (SDHCI_ADMA_ADDRESS) cannot point to the
64-bit address.

I noticed this issue only after commit bd2e75633c ("dma-contiguous:
use fallback alloc_pages for single pages"). Prior to that commit,
dma_set_mask_and_coherent() returned the dma address that fits in
32-bit range, at least for the default arm64 configuration
(arch/arm64/configs/defconfig). Now the host->adma_addr exceeds the
32-bit limit, causing the real problem for the Socionext SoCs.
(As a side-note, I was also able to reproduce the issue for older
kernels by turning off CONFIG_DMA_CMA.)

Call sdhci_enable_v4_mode() to fix this.

Cc: <stable@vger.kernel.org> # v4.20+
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-08-30 09:17:53 +02:00
Chunyan Zhang
2f765c175e mmc: sdhci-sprd: clear the UHS-I modes read from registers
sprd's sd host controller supports SDR50/SDR104/DDR50 though, the UHS-I
mode used by the specific card can be selected via devicetree only.

Fixes: fb8bd90f83 ("mmc: sdhci-sprd: Add Spreadtrum's initial host controller")
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Chunyan Zhang <zhang.lyra@gmail.com>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Tested-by: Baolin Wang <baolin.wang@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-08-30 09:17:53 +02:00
Chunyan Zhang
4324e54bbe mms: sdhci-sprd: add SDHCI_QUIRK_BROKEN_CARD_DETECTION
sprd's sd host controller doesn't support detection to
card insert or remove.

Fixes: fb8bd90f83 ("mmc: sdhci-sprd: Add Spreadtrum's initial host controller")
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Chunyan Zhang <zhang.lyra@gmail.com>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Tested-by: Baolin Wang <baolin.wang@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-08-30 09:17:53 +02:00
Chunyan Zhang
6a526f66ab mmc: sdhci-sprd: add SDHCI_QUIRK2_PRESET_VALUE_BROKEN
The bit of PRESET_VAL_ENABLE in HOST_CONTROL2 register is reserved on
sprd's sd host controller, set quirk2 to disable configuring this.

Fixes: fb8bd90f83 ("mmc: sdhci-sprd: Add Spreadtrum's initial host controller")
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Chunyan Zhang <zhang.lyra@gmail.com>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Tested-by: Baolin Wang <baolin.wang@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-08-30 09:17:53 +02:00
Chunyan Zhang
4eae8cbdff mmc: sdhci-sprd: add get_ro hook function
sprd's sd host controller doesn't support write protect to sd card.

Fixes: fb8bd90f83 ("mmc: sdhci-sprd: Add Spreadtrum's initial host controller")
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Chunyan Zhang <zhang.lyra@gmail.com>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Tested-by: Baolin Wang <baolin.wang@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-08-30 09:17:53 +02:00
Chunyan Zhang
efdaf27517 mmc: sdhci-sprd: fixed incorrect clock divider
The register SDHCI_CLOCK_CONTROL should be cleared before config clock
divider, otherwise the frequency configured maybe lower than we
expected.

Fixes: fb8bd90f83 ("mmc: sdhci-sprd: Add Spreadtrum's initial host controller")
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
Signed-off-by: Chunyan Zhang <zhang.lyra@gmail.com>
Reviewed-by: Baolin Wang <baolin.wang@linaro.org>
Tested-by: Baolin Wang <baolin.wang@linaro.org>
Cc: stable@vger.kernel.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-08-30 09:17:53 +02:00
Ulf Hansson
72741084d9 mmc: core: Fix init of SD cards reporting an invalid VDD range
The OCR register defines the supported range of VDD voltages for SD cards.
However, it has turned out that some SD cards reports an invalid voltage
range, for example having bit7 set.

When a host supports MMC_CAP2_FULL_PWR_CYCLE and some of the voltages from
the invalid VDD range, this triggers the core to run a power cycle of the
card to try to initialize it at the lowest common supported voltage.
Obviously this fails, since the card can't support it.

Let's fix this problem, by clearing invalid bits from the read OCR register
for SD cards, before proceeding with the VDD voltage negotiation.

Cc: stable@vger.kernel.org
Reported-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Philip Langdale <philipl@overt.org>
Tested-by: Philip Langdale <philipl@overt.org>
Tested-by: Manuel Presnitz <mail@mpy.de>
2019-08-30 09:17:53 +02:00
Dave Airlie
1c0d63eb0e drm/i915 fixes for v5.3-rc7:
- Fix DP MST max BPC property creation after DRM register
 - Fix unused ggtt deballooning and NULL dereference in guest
 - Fix DSC eDP transcoder identification
 - Fix WARN from DMA API debug by setting DMA max segment size
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Merge tag 'drm-intel-fixes-2019-08-29' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

drm/i915 fixes for v5.3-rc7:
- Fix DP MST max BPC property creation after DRM register
- Fix unused ggtt deballooning and NULL dereference in guest
- Fix DSC eDP transcoder identification
- Fix WARN from DMA API debug by setting DMA max segment size

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87a7bseati.fsf@intel.com
2019-08-30 10:55:29 +10:00
Dave Airlie
c3dd029cc0 Merge tag 'drm-fixes-5.3-2019-08-28' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
drm-fixes-5.3-2019-08-28:

amdgpu:
- Fix GFXOFF regression for PCO and RV2
- Fix missing fence reference
- Fix VG20 power readings on certain SMU firmware versions
- Fix dpm level setup for VG20
- Add an ATPX laptop quirk

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190829022925.32678-1-alexander.deucher@amd.com
2019-08-30 10:52:07 +10:00
Linus Torvalds
2653810049 a few small SMB3 fixes, and a larger one to fix various older string handling functions
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Merge tag '5.3-rc6-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes from Steve French:
 "A few small SMB3 fixes, and a larger one to fix various older string
  handling functions"

* tag '5.3-rc6-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: update internal module number
  cifs: replace various strncpy with strscpy and similar
  cifs: Use kzfree() to zero out the password
  cifs: set domainName when a domain-key is used in multiuser
2019-08-29 17:51:23 -07:00
Dave Airlie
db26d53c7d drm-misc-fixes for v5.3 (rc7?):
- Make qxl reservel the vga ports using vgaargb to prevent switching to vga compatibility mode.
 - Fix omap port lookup for SDI output
 - Use virtio_max_dma_size to fix an issue with swiotlb.
 - Compiler fixes to komeda.
 - Add missing of_node_get() call in komeda.
 - Reorder the komeda de-init functions.
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Merge tag 'drm-misc-fixes-2019-08-28' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

drm-misc-fixes for v5.3 (rc7?):
- Make qxl reservel the vga ports using vgaargb to prevent switching to vga compatibility mode.
- Fix omap port lookup for SDI output
- Use virtio_max_dma_size to fix an issue with swiotlb.
- Compiler fixes to komeda.
- Add missing of_node_get() call in komeda.
- Reorder the komeda de-init functions.

Signed-off-by: Dave Airlie <airlied@redhat.com>

From: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/f187c28b-6279-2c4f-3e53-296ee899133b@linux.intel.com
2019-08-30 10:41:30 +10:00
Linus Torvalds
4a64489cf8 Wimplicit-fallthrough patches for 5.3-rc7
Hi Linus,
 
 Please, pull the following patches that mark switch cases where we are
 expecting to fall through.
 
  - Fix fall-through warnings on arc and nds32 for multiple
    configurations.
 
 Thanks
 
 Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
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Merge tag 'Wimplicit-fallthrough-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux

Pull fallthrough fixes from Gustavo A. R. Silva:
 "Fix fall-through warnings on arc and nds32 for multiple
  configurations"

* tag 'Wimplicit-fallthrough-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
  nds32: Mark expected switch fall-throughs
  ARC: unwind: Mark expected switch fall-through
2019-08-29 09:28:25 -07:00
Linus Torvalds
4e73079d39 Hyperbus:
- Add a 'depends on' in the core Kconfig entry to avoid build errors.
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Merge tag 'mtd/fixes-for-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux

Pull mtd fix from Miquel Raynal:
 "Add a 'depends on' in the core Hyperbus Kconfig entry to avoid build
  errors"

* tag 'mtd/fixes-for-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux:
  mtd: hyperbus: fix dependency and build error
2019-08-29 09:09:44 -07:00
Gustavo A. R. Silva
7c9eb2dbd7 nds32: Mark expected switch fall-throughs
Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings (Building: allmodconfig nds32):

include/math-emu/soft-fp.h:124:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
arch/nds32/kernel/signal.c:362:20: warning: this statement may fall through [-Wimplicit-fallthrough=]
arch/nds32/kernel/signal.c:315:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:417:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:430:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:310:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:320:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:310:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:320:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/soft-fp.h:124:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:417:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:430:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:310:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:320:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:310:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:320:11: warning: this statement may fall through [-Wimplicit-fallthrough=]

Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
2019-08-29 11:06:56 -05:00
Gustavo A. R. Silva
00a0c8451a ARC: unwind: Mark expected switch fall-through
Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings (Building: haps_hs_defconfig arc):

arch/arc/kernel/unwind.c: In function ‘read_pointer’:
./include/linux/compiler.h:328:5: warning: this statement may fall through [-Wimplicit-fallthrough=]
  do {        \
     ^
./include/linux/compiler.h:338:2: note: in expansion of macro ‘__compiletime_assert’
  __compiletime_assert(condition, msg, prefix, suffix)
  ^~~~~~~~~~~~~~~~~~~~
./include/linux/compiler.h:350:2: note: in expansion of macro ‘_compiletime_assert’
  _compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
  ^~~~~~~~~~~~~~~~~~~
./include/linux/build_bug.h:39:37: note: in expansion of macro ‘compiletime_assert’
 #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                     ^~~~~~~~~~~~~~~~~~
./include/linux/build_bug.h:50:2: note: in expansion of macro ‘BUILD_BUG_ON_MSG’
  BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
  ^~~~~~~~~~~~~~~~
arch/arc/kernel/unwind.c:573:3: note: in expansion of macro ‘BUILD_BUG_ON’
   BUILD_BUG_ON(sizeof(u32) != sizeof(value));
   ^~~~~~~~~~~~
arch/arc/kernel/unwind.c:575:2: note: here
  case DW_EH_PE_native:
  ^~~~

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
2019-08-29 11:05:17 -05:00
Geert Uytterhoeven
7a6c9dbb36 soc: ixp4xx: Protect IXP4xx SoC drivers by ARCH_IXP4XX || COMPILE_TEST
The move of the IXP4xx SoC drivers exposed their config options on all
platforms.

Fix this by wrapping them inside an ARCH_IXP4XX or COMPILE_TEST block.

Link: https://lore.kernel.org/r/20190823090352.12243-1-linus.walleij@linaro.org
Fixes: fcf2d8978c ("ARM: ixp4xx: Move NPE and QMGR to drivers/soc")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-08-29 17:34:38 +02:00
Arnd Bergmann
48402892f2 A single patch to change my MAINTAINERS address
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Merge tag 'sunxi-fixes-for-5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into arm/fixes

A single patch to change my MAINTAINERS address

* tag 'sunxi-fixes-for-5.3-3' of git://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
  MAINTAINERS: Update my email address

Link: https://lore.kernel.org/r/8c04a96b-4a75-4e1f-b3ac-05fe091f251e.lettre@localhost
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-08-29 17:29:09 +02:00
Arnd Bergmann
34614c30bf Hisilicon fixes for v5.3-rc
- Fixed RCU usage in logical PIO
 - Added a function to unregister a logical PIO range in logical PIO
   to support the fixes in the hisi-lpc driver
 - Fixed and optimized hisi-lpc driver to avoid potential use-after-free
   and driver unbind crash
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Merge tag 'hisi-fixes-for-5.3' of git://github.com/hisilicon/linux-hisi into arm/fixes

Hisilicon fixes for v5.3-rc

- Fixed RCU usage in logical PIO
- Added a function to unregister a logical PIO range in logical PIO
  to support the fixes in the hisi-lpc driver
- Fixed and optimized hisi-lpc driver to avoid potential use-after-free
  and driver unbind crash

* tag 'hisi-fixes-for-5.3' of git://github.com/hisilicon/linux-hisi:
  bus: hisi_lpc: Add .remove method to avoid driver unbind crash
  bus: hisi_lpc: Unregister logical PIO range to avoid potential use-after-free
  lib: logic_pio: Add logic_pio_unregister_range()
  lib: logic_pio: Avoid possible overlap for unregistering regions
  lib: logic_pio: Fix RCU usage

Link: https://lore.kernel.org/r/5D562335.7000902@hisilicon.com
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-08-29 17:23:52 +02:00
Randy Dunlap
dc9cfd2692 mtd: hyperbus: fix dependency and build error
lib/devres.c, which implements devm_ioremap_resource(), is only built
when CONFIG_HAS_IOMEM is set/enabled, so MTD_HYPERBUS should depend
on HAS_IOMEM.  Fixes a build error and a Kconfig warning (as seen on
UML builds):

WARNING: unmet direct dependencies detected for MTD_COMPLEX_MAPPINGS
  Depends on [n]: MTD [=m] && HAS_IOMEM [=n]
  Selected by [m]:
  - MTD_HYPERBUS [=m] && MTD [=m]

ERROR: "devm_ioremap_resource" [drivers/mtd/hyperbus/hyperbus-core.ko] undefined!

Fixes: dcc7d3446a ("mtd: Add support for HyperBus memory devices")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-mtd@lists.infradead.org
Acked-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
2019-08-29 14:31:23 +02:00
Linus Torvalds
9cf6b756cd arm64 fixes for -rc7
- Fix GICv2 emulation bug (KVM)
 
 - Fix deadlock in virtual GIC interrupt injection code (KVM)
 
 - Fix kprobes blacklist init failure due to broken kallsyms lookup
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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:
 "Hot on the heels of our last set of fixes are a few more for -rc7.

  Two of them are fixing issues with our virtual interrupt controller
  implementation in KVM/arm, while the other is a longstanding but
  straightforward kallsyms fix which was been acked by Masami and
  resolves an initialisation failure in kprobes observed on arm64.

   - Fix GICv2 emulation bug (KVM)

   - Fix deadlock in virtual GIC interrupt injection code (KVM)

   - Fix kprobes blacklist init failure due to broken kallsyms lookup"

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  KVM: arm/arm64: vgic-v2: Handle SGI bits in GICD_I{S,C}PENDR0 as WI
  KVM: arm/arm64: vgic: Fix potential deadlock when ap_list is long
  kallsyms: Don't let kallsyms_lookup_size_offset() fail on retrieving the first symbol
2019-08-28 10:37:21 -07:00
Ayan Kumar Halder
6978bce054 drm/komeda: Reordered the komeda's de-init functions
The de-init routine should be doing the following in order:-
1. Unregister the drm device
2. Shut down the crtcs - failing to do this might cause a connector leakage
See the 'commit 109c4d18e5 ("drm/arm/malidp: Ensure that the crtcs are
shutdown before removing any encoder/connector")'
3. Disable the interrupts
4. Unbind the components
5. Free up DRM mode_config info

Changes from v1:-
1. Re-ordered the header files inclusion
2. Rebased on top of the latest drm-misc-fixes

Signed-off-by:. Ayan Kumar Halder <Ayan.Halder@arm.com>
Reviewed-by: Mihail Atanassov <mihail.atanassov@arm.com>
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Link: https://patchwork.freedesktop.org/patch/327606/
2019-08-28 17:55:40 +01:00
Bernard Metzler
531a64e4c3 RDMA/siw: Fix IPv6 addr_list locking
Walking the address list of an inet6_dev requires
appropriate locking. Since the called function
siw_listen_address() may sleep, we have to use
rtnl_lock() instead of read_lock_bh().

Also introduces sanity checks if we got a device
from in_dev_get() or in6_dev_get().

Reported-by: Bart Van Assche <bvanassche@acm.org>
Fixes: 6c52fdc244 ("rdma/siw: connection management")
Signed-off-by: Bernard Metzler <bmt@zurich.ibm.com>
Link: https://lore.kernel.org/r/20190828130355.22830-1-bmt@zurich.ibm.com
Signed-off-by: Doug Ledford <dledford@redhat.com>
2019-08-28 10:29:19 -04:00
Ilya Dryomov
d435c9a7b8 rbd: restore zeroing past the overlap when reading from parent
The parent image is read only up to the overlap point, the rest of
the buffer should be zeroed.  This snuck in because as it turns out
the overlap test case has not been triggering this code path for
a while now.

Fixes: a9b67e6994 ("rbd: replace obj_req->tried_parent with obj_req->read_state")
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jason Dillaman <dillaman@redhat.com>
2019-08-28 12:34:11 +02:00
Jia-Ju Bai
e8c99200b4 libceph: don't call crypto_free_sync_skcipher() on a NULL tfm
In set_secret(), key->tfm is assigned to NULL on line 55, and then
ceph_crypto_key_destroy(key) is executed.

ceph_crypto_key_destroy(key)
  crypto_free_sync_skcipher(key->tfm)
    crypto_free_skcipher(&tfm->base);

This happens to work because crypto_sync_skcipher is a trivial wrapper
around crypto_skcipher: &tfm->base is still 0 and crypto_free_skcipher()
handles that.  Let's not rely on the layout of crypto_sync_skcipher.

This bug is found by a static analysis tool STCheck written by us.

Fixes: 69d6302b65 ("libceph: Remove VLA usage of skcipher").
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2019-08-28 12:33:46 +02:00
Marc Zyngier
82e40f558d KVM: arm/arm64: vgic-v2: Handle SGI bits in GICD_I{S,C}PENDR0 as WI
A guest is not allowed to inject a SGI (or clear its pending state)
by writing to GICD_ISPENDR0 (resp. GICD_ICPENDR0), as these bits are
defined as WI (as per ARM IHI 0048B 4.3.7 and 4.3.8).

Make sure we correctly emulate the architecture.

Fixes: 96b298000d ("KVM: arm/arm64: vgic-new: Add PENDING registers handlers")
Cc: stable@vger.kernel.org # 4.7+
Reported-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
2019-08-28 11:21:42 +01:00
Steve French
36e337744c cifs: update internal module number
To 2.22

Signed-off-by: Steve French <stfrench@microsoft.com>
2019-08-27 17:29:56 -05:00
Ronnie Sahlberg
340625e618 cifs: replace various strncpy with strscpy and similar
Using strscpy is cleaner, and avoids some problems with
handling maximum length strings.  Linus noticed the
original problem and Aurelien pointed out some additional
problems. Fortunately most of this is SMB1 code (and
in particular the ASCII string handling older, which
is less common).

Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2019-08-27 17:25:12 -05:00
Dan Carpenter
478228e57f cifs: Use kzfree() to zero out the password
It's safer to zero out the password so that it can never be disclosed.

Fixes: 0c219f5799c7 ("cifs: set domainName when a domain-key is used in multiuser")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2019-08-27 16:44:27 -05:00
Ronnie Sahlberg
f2aee329a6 cifs: set domainName when a domain-key is used in multiuser
RHBZ: 1710429

When we use a domain-key to authenticate using multiuser we must also set
the domainnmame for the new volume as it will be used and passed to the server
in the NTLMSSP Domain-name.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
2019-08-27 16:44:24 -05:00
Linus Torvalds
9e8312f5e1 NFS client bugfixes for Linux 5.3
Highlights include:
 
 Stable fixes:
 - Fix a page lock leak in nfs_pageio_resend()
 - Ensure O_DIRECT reports an error if the bytes read/written is 0
 - Don't handle errors if the bind/connect succeeded
 - Revert "NFSv4/flexfiles: Abort I/O early if the layout segment was invalidat
 ed"
 
 Bugfixes:
 - Don't refresh attributes with mounted-on-file information
 - Fix return values for nfs4_file_open() and nfs_finish_open()
 - Fix pnfs layoutstats reporting of I/O errors
 - Don't use soft RPC calls for pNFS/flexfiles I/O, and don't abort for
   soft I/O errors when the user specifies a hard mount.
 - Various fixes to the error handling in sunrpc
 - Don't report writepage()/writepages() errors twice.
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Merge tag 'nfs-for-5.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 "Highlights include:

  Stable fixes:

   - Fix a page lock leak in nfs_pageio_resend()

   - Ensure O_DIRECT reports an error if the bytes read/written is 0

   - Don't handle errors if the bind/connect succeeded

   - Revert "NFSv4/flexfiles: Abort I/O early if the layout segment was
     invalidat ed"

  Bugfixes:

   - Don't refresh attributes with mounted-on-file information

   - Fix return values for nfs4_file_open() and nfs_finish_open()

   - Fix pnfs layoutstats reporting of I/O errors

   - Don't use soft RPC calls for pNFS/flexfiles I/O, and don't abort
     for soft I/O errors when the user specifies a hard mount.

   - Various fixes to the error handling in sunrpc

   - Don't report writepage()/writepages() errors twice"

* tag 'nfs-for-5.3-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS: remove set but not used variable 'mapping'
  NFSv2: Fix write regression
  NFSv2: Fix eof handling
  NFS: Fix writepage(s) error handling to not report errors twice
  NFS: Fix spurious EIO read errors
  pNFS/flexfiles: Don't time out requests on hard mounts
  SUNRPC: Handle connection breakages correctly in call_status()
  Revert "NFSv4/flexfiles: Abort I/O early if the layout segment was invalidated"
  SUNRPC: Handle EADDRINUSE and ENOBUFS correctly
  pNFS/flexfiles: Turn off soft RPC calls
  SUNRPC: Don't handle errors if the bind/connect succeeded
  NFS: On fatal writeback errors, we need to call nfs_inode_remove_request()
  NFS: Fix initialisation of I/O result struct in nfs_pgio_rpcsetup
  NFS: Ensure O_DIRECT reports an error if the bytes read/written is 0
  NFSv4/pnfs: Fix a page lock leak in nfs_pageio_resend()
  NFSv4: Fix return value in nfs_finish_open()
  NFSv4: Fix return values for nfs4_file_open()
  NFS: Don't refresh attributes with mounted-on-file information
2019-08-27 13:22:57 -07:00
Linus Torvalds
6525771f58 ARC updates for 5.3-rc7
- Support for Edge Triggered IRQs in ARC IDU intc
 
  - other fixes here and there
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Merge tag 'arc-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC updates from Vineet Gupta:

 - support for Edge Triggered IRQs in ARC IDU intc

 - other fixes here and there

* tag 'arc-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  arc: prefer __section from compiler_attributes.h
  dt-bindings: IDU-intc: Add support for edge-triggered interrupts
  dt-bindings: IDU-intc: Clean up documentation
  ARCv2: IDU-intc: Add support for edge-triggered interrupts
  ARC: unwind: Mark expected switch fall-throughs
  ARC: [plat-hsdk]: allow to switch between AXI DMAC port configurations
  ARC: fix typo in setup_dma_ops log message
  ARCv2: entry: early return from exception need not clear U & DE bits
2019-08-27 10:50:27 -07:00
Linus Torvalds
8d6454083d - Bug Fixes
- Identify potentially unused functions when !PM; rk808
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Merge tag 'mfd-fixes-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd

Pull MFD fix from Lee Jones:
 "Identify potentially unused functions in rk808 driver when !PM"

* tag 'mfd-fixes-5.3' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/mfd:
  mfd: rk808: Make PM function declaration static
  mfd: rk808: Mark pm functions __maybe_unused
2019-08-27 10:47:01 -07:00
Linus Torvalds
0004654fb1 sound fixes for 5.3-rc7
A collection of small fixes as usual:
 
 - More coverage of USB-audio descriptor sanity checks
 - A fix for mute LED regression on Conexant HD-audio codecs
 - A few device-specific fixes and quirks for USB-audio and HD-audio
 - A fix for (die-hard remaining) possible race in sequencer core
 - FireWire oxfw regression fix that was introduced in 5.3-rc1
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Merge tag 'sound-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "A collection of small fixes as usual:

   - More coverage of USB-audio descriptor sanity checks

   - A fix for mute LED regression on Conexant HD-audio codecs

   - A few device-specific fixes and quirks for USB-audio and HD-audio

   - A fix for (die-hard remaining) possible race in sequencer core

   - FireWire oxfw regression fix that was introduced in 5.3-rc1"

* tag 'sound-5.3-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: oxfw: fix to handle correct stream for PCM playback
  ALSA: seq: Fix potential concurrent access to the deleted pool
  ALSA: usb-audio: Check mixer unit bitmap yet more strictly
  ALSA: line6: Fix memory leak at line6_init_pcm() error path
  ALSA: usb-audio: Fix invalid NULL check in snd_emuusb_set_samplerate()
  ALSA: hda/ca0132 - Add new SBZ quirk
  ALSA: usb-audio: Add implicit fb quirk for Behringer UFX1604
  ALSA: hda - Fixes inverted Conexant GPIO mic mute led
2019-08-27 10:42:03 -07:00
Aaron Liu
41940ff50f drm/amdgpu: fix GFXOFF on Picasso and Raven2
For picasso(adev->pdev->device == 0x15d8)&raven2(adev->rev_id >= 0x8),
firmware is sufficient to support gfxoff.
In commit 98f58ada2d, for picasso&raven2,
return directly and cause gfxoff disabled.

Fixes: 98f58ada2d ("drm/amdgpu/gfx9: update pg_flags after determining if gfx off is possible")
Reviewed-by: Huang Rui <ray.huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Aaron Liu <aaron.liu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2019-08-27 12:25:20 -05:00
Kai-Heng Feng
317a3aaef9 drm/amdgpu: Add APTX quirk for Dell Latitude 5495
Needs ATPX rather than _PR3 to really turn off the dGPU. This can save
~5W when dGPU is runtime-suspended.

Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
2019-08-27 12:24:40 -05:00
Evan Quan
83e09d5bdd drm/amd/powerplay: correct Vega20 dpm level related settings
Correct the settings for auto mode and skip the unnecessary
settings for dcefclk and fclk.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-08-27 12:23:40 -05:00
Linus Torvalds
452a04441b Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from David Miller:

 1) Use 32-bit index for tails calls in s390 bpf JIT, from Ilya
    Leoshkevich.

 2) Fix missed EPOLLOUT events in TCP, from Eric Dumazet. Same fix for
    SMC from Jason Baron.

 3) ipv6_mc_may_pull() should return 0 for malformed packets, not
    -EINVAL. From Stefano Brivio.

 4) Don't forget to unpin umem xdp pages in error path of
    xdp_umem_reg(). From Ivan Khoronzhuk.

 5) Fix sta object leak in mac80211, from Johannes Berg.

 6) Fix regression by not configuring PHYLINK on CPU port of bcm_sf2
    switches. From Florian Fainelli.

 7) Revert DMA sync removal from r8169 which was causing regressions on
    some MIPS Loongson platforms. From Heiner Kallweit.

 8) Use after free in flow dissector, from Jakub Sitnicki.

 9) Fix NULL derefs of net devices during ICMP processing across
    collect_md tunnels, from Hangbin Liu.

10) proto_register() memory leaks, from Zhang Lin.

11) Set NLM_F_MULTI flag in multipart netlink messages consistently,
    from John Fastabend.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (66 commits)
  r8152: Set memory to all 0xFFs on failed reg reads
  openvswitch: Fix conntrack cache with timeout
  ipv4: mpls: fix mpls_xmit for iptunnel
  nexthop: Fix nexthop_num_path for blackhole nexthops
  net: rds: add service level support in rds-info
  net: route dump netlink NLM_F_MULTI flag missing
  s390/qeth: reject oversized SNMP requests
  sock: fix potential memory leak in proto_register()
  MAINTAINERS: Add phylink keyword to SFF/SFP/SFP+ MODULE SUPPORT
  xfrm/xfrm_policy: fix dst dev null pointer dereference in collect_md mode
  ipv4/icmp: fix rt dst dev null pointer dereference
  openvswitch: Fix log message in ovs conntrack
  bpf: allow narrow loads of some sk_reuseport_md fields with offset > 0
  bpf: fix use after free in prog symbol exposure
  bpf: fix precision tracking in presence of bpf2bpf calls
  flow_dissector: Fix potential use-after-free on BPF_PROG_DETACH
  Revert "r8169: remove not needed call to dma_sync_single_for_device"
  ipv6: propagate ipv6_add_dev's error returns out of ipv6_find_idev
  net/ncsi: Fix the payload copying for the request coming from Netlink
  qed: Add cleanup in qed_slowpath_start()
  ...
2019-08-27 10:12:48 -07:00
Heyi Guo
d4a8061a7c KVM: arm/arm64: vgic: Fix potential deadlock when ap_list is long
If the ap_list is longer than 256 entries, merge_final() in list_sort()
will call the comparison callback with the same element twice, causing
a deadlock in vgic_irq_cmp().

Fix it by returning early when irqa == irqb.

Cc: stable@vger.kernel.org # 4.7+
Fixes: 8e44474579 ("KVM: arm/arm64: vgic-new: Add IRQ sorting")
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Signed-off-by: Heyi Guo <guoheyi@huawei.com>
[maz: massaged commit log and patch, added Fixes and Cc-stable]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
2019-08-27 16:19:56 +01:00
Marc Zyngier
2a1a3fa0f2 kallsyms: Don't let kallsyms_lookup_size_offset() fail on retrieving the first symbol
An arm64 kernel configured with

  CONFIG_KPROBES=y
  CONFIG_KALLSYMS=y
  # CONFIG_KALLSYMS_ALL is not set
  CONFIG_KALLSYMS_BASE_RELATIVE=y

reports the following kprobe failure:

  [    0.032677] kprobes: failed to populate blacklist: -22
  [    0.033376] Please take care of using kprobes.

It appears that kprobe fails to retrieve the symbol at address
0xffff000010081000, despite this symbol being in System.map:

  ffff000010081000 T __exception_text_start

This symbol is part of the first group of aliases in the
kallsyms_offsets array (symbol names generated using ugly hacks in
scripts/kallsyms.c):

  kallsyms_offsets:
          .long   0x1000 // do_undefinstr
          .long   0x1000 // efi_header_end
          .long   0x1000 // _stext
          .long   0x1000 // __exception_text_start
          .long   0x12b0 // do_cp15instr

Looking at the implementation of get_symbol_pos(), it returns the
lowest index for aliasing symbols. In this case, it return 0.

But kallsyms_lookup_size_offset() considers 0 as a failure, which
is obviously wrong (there is definitely a valid symbol living there).
In turn, the kprobe blacklisting stops abruptly, hence the original
error.

A CONFIG_KALLSYMS_ALL kernel wouldn't fail as there is always
some random symbols at the beginning of this array, which are never
looked up via kallsyms_lookup_size_offset.

Fix it by considering that get_symbol_pos() is always successful
(which is consistent with the other uses of this function).

Fixes: ffc5089196 ("[PATCH] Create kallsyms_lookup_size_offset()")
Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Will Deacon <will@kernel.org>
2019-08-27 16:19:56 +01:00
YueHaibing
99300a8526 NFS: remove set but not used variable 'mapping'
Fixes gcc '-Wunused-but-set-variable' warning:

fs/nfs/write.c: In function nfs_page_async_flush:
fs/nfs/write.c:609:24: warning: variable mapping set but not used [-Wunused-but-set-variable]

It is not use since commit aefb623c422e ("NFS: Fix
writepage(s) error handling to not report errors twice")

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2019-08-27 10:24:56 -04:00
Trond Myklebust
d33d4beb52 NFSv2: Fix write regression
Ensure we update the write result count on success, since the
RPC call itself does not do so.

Reported-by: Jan Stancek <jstancek@redhat.com>
Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Tested-by: Jan Stancek <jstancek@redhat.com>
2019-08-27 10:24:56 -04:00