Commit Graph

968102 Commits

Author SHA1 Message Date
Changbin Du 635e3f3e47
riscv: uaccess: fix __put_kernel_nofault()
The copy_from_kernel_nofault() is broken on riscv because the 'dst' and
'src' are mistakenly reversed in __put_kernel_nofault() macro.

copy_to_kernel_nofault:
...
0xffffffe0003159b8 <+30>:    sd      a4,0(a1) # a1 aka 'src'

Fixes: d464118cdc ("riscv: implement __get_kernel_nofault and __put_user_nofault")
Signed-off-by: Changbin Du <changbin.du@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Anup Patel <anup@brainfault.org>
Tested-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-11-06 00:03:46 -08:00
Deepak R Varma 5d4c1edf0d drm/qxl: replace idr_init() by idr_init_base()
idr_init() uses base 0 which is an invalid identifier for this driver.
The idr_alloc for this driver uses 1 as start value for ID range. The
new function idr_init_base allows IDR to set the ID lookup from base 1.
This avoids all lookups that otherwise starts from 0 since 0 is always
unused / available.

References: commit 6ce711f275 ("idr: Make 1-based IDRs more efficient")

Signed-off-by: Deepak R Varma <mh12gx2825@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20201105185016.GA71797@localhost
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-11-06 08:50:31 +01:00
Dan Carpenter 44510939b1 drm/virtio: Fix a double free in virtio_gpu_cmd_map()
This is freed both here and in the caller (virtio_gpu_vram_map()) so
it's a double free.  The correct place is only in the caller.

Fixes: 16845c5d54 ("drm/virtio: implement blob resources: implement vram object")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Gurchetan Singh <gurchetansingh@chromium.org>
Link: http://patchwork.freedesktop.org/patch/msgid/20201030114808.GD3251003@mwanda
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2020-11-06 08:50:30 +01:00
Liu Shaohua bcacf5f6f2
riscv: fix pfn_to_virt err in do_page_fault().
The argument to pfn_to_virt() should be pfn not the value of CSR_SATP.

Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: liush <liush@allwinnertech.com>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-11-05 21:13:44 -08:00
Dave Airlie c0f98d2f8b drm-misc-next for $kernel-version:
UAPI Changes:
 
 Cross-subsystem Changes:
 
  - arch/arm64: Describe G12b GPU as coherent
  - iommu: Support coherency for Mali LPAE
 
 Core Changes:
 
  - atomic: Pass full state to CRTC atomic_{check, begin, flush}(); Use
    atomic-state pointers
  - drm: Remove SCATTER_LIST_MAX_SEGMENT; Cleanups
  - doc: Document legacy_cursor_update better; cleanups
  - edid: Don't warn n EDIDs of zero
  - ttm: New backend allocation pool; Remove old page allocator; Rework
    no_retry handling; Replace flags with booleans in struct ttm_operation_ctx
  - vram-helper: Cleanups
 
  - fbdev: Cleanups
  - console: Store font size as unsigned value
 
 Driver Changes:
 
  - ast: Support new display mode
  - amdgpu: Switch to new TTM allocator
  - hisilicon: Cleanups
  - nouveau: Switch to new TTM allocator; Fix include of swiotbl.h and
    limits.h; Use state helper instead of CRTC state pointer
  - panfrost: Support cache-coherent integrations; Fix mutex corruption on
    open/close; Cleanupse
  - qxl: Cleanups
  - radeon: Switch to new TTM allocator
  - ticdc: Fix build failure
  - vmwgfx: Switch to new TTM allocator
  - xlnx: Use dma_request_chan
 
  - fbdev/sh_mobile: Cleanups
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Merge tag 'drm-misc-next-2020-11-05' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for 5.11:

UAPI Changes:

Cross-subsystem Changes:

 - arch/arm64: Describe G12b GPU as coherent
 - iommu: Support coherency for Mali LPAE

Core Changes:

 - atomic: Pass full state to CRTC atomic_{check, begin, flush}(); Use
   atomic-state pointers
 - drm: Remove SCATTER_LIST_MAX_SEGMENT; Cleanups
 - doc: Document legacy_cursor_update better; cleanups
 - edid: Don't warn n EDIDs of zero
 - ttm: New backend allocation pool; Remove old page allocator; Rework
   no_retry handling; Replace flags with booleans in struct ttm_operation_ctx
 - vram-helper: Cleanups

 - fbdev: Cleanups
 - console: Store font size as unsigned value

Driver Changes:

 - ast: Support new display mode
 - amdgpu: Switch to new TTM allocator
 - hisilicon: Cleanups
 - nouveau: Switch to new TTM allocator; Fix include of swiotbl.h and
   limits.h; Use state helper instead of CRTC state pointer
 - panfrost: Support cache-coherent integrations; Fix mutex corruption on
   open/close; Cleanupse
 - qxl: Cleanups
 - radeon: Switch to new TTM allocator
 - ticdc: Fix build failure
 - vmwgfx: Switch to new TTM allocator
 - xlnx: Use dma_request_chan

 - fbdev/sh_mobile: Cleanups

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

From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20201105101641.GA13099@linux-uq9g
2020-11-06 15:00:01 +10:00
Dave Airlie 356583b956 Some patches for vc4 to fix some resources cleanup issues, two fixes for
panfrost for madvise and the shrinker and a constification of fonts
 structure
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Merge tag 'drm-misc-fixes-2020-11-05' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes

Some patches for vc4 to fix some resources cleanup issues, two fixes for
panfrost for madvise and the shrinker and a constification of fonts
structure

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

From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20201105101354.socyu26jwyns7lfj@gilmour.lan
2020-11-06 13:32:12 +10:00
Scott Cheloha 3fb4a8fa28 powerpc/numa: Fix build when CONFIG_NUMA=n
Add a non-NUMA definition for of_drconf_to_nid_single() to topology.h
so we have one even if powerpc/mm/numa.c is not compiled. On a
non-NUMA kernel the appropriate node id is always first_online_node.

Fixes: 72cdd117c4 ("pseries/hotplug-memory: hot-add: skip redundant LMB lookup")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Scott Cheloha <cheloha@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201105223040.3612663-1-cheloha@linux.ibm.com
2020-11-06 14:16:19 +11:00
Dave Airlie f56fb0122c Merge tag 'amd-drm-fixes-5.10-2020-11-04' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
amd-drm-fixes-5.10-2020-11-04:

amdgpu:
- Add support for more navi1x SKUs
- Fix for suspend on CI dGPUs
- VCN DPG fix for Picasso
- Sienna Cichlid fixes
- Polaris DPM fix
- Add support for Green Sardine

amdkfd:
- Fix an allocation failure check

MAINTAINERS:
- Fix path for amdgpu power management

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexdeucher@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201104205741.4100-1-alexander.deucher@amd.com
2020-11-06 11:51:40 +10:00
Dave Airlie 866bc2d3c4 - GVT fixes including vGPU suspend/resume fixes and workaround for APL guest GPU hang.
- Fix set domain's cache coherency (Chris)
 - Fixes around breadcrumbs (Chris)
 - Fix encoder lookup during PSR atomic (Imre)
 - Hold onto an explicit ref to i915_vma_work.pinned (Chris)
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Merge tag 'drm-intel-fixes-2020-11-05' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

- GVT fixes including vGPU suspend/resume fixes and workaround for APL guest GPU hang.
- Fix set domain's cache coherency (Chris)
- Fixes around breadcrumbs (Chris)
- Fix encoder lookup during PSR atomic (Imre)
- Hold onto an explicit ref to i915_vma_work.pinned (Chris)

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

From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201105173026.GA858446@intel.com
2020-11-06 11:45:21 +10:00
Sean Anderson 79605f1394
riscv: Set text_offset correctly for M-Mode
M-Mode Linux is loaded at the start of RAM, not 2MB later. Perhaps this
should be calculated based on PAGE_OFFSET somehow? Even better would be to
deprecate text_offset and instead introduce something absolute.

Signed-off-by: Sean Anderson <seanga2@gmail.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-11-05 17:32:27 -08:00
Dave Airlie 53aa37fb8d drm/imx: fixes and cleanups
Remove unused functions and empty callbacks, let the dw_hdmi-imx driver
 reuse imx_drm_encoder_parse_of() instead of reimplementing it, replace
 the custom register spinlock with the regmap default spinlock and remove
 redundant tracking of enabled state in imx-tve, drop the explicit
 drm_mode_config_cleanup() call in imx-drm-core, reduce the scope of edid
 length variables that are not otherwise used in imx-ldb and
 parallel-display, fix a memory leak in the parallel-display bind error
 path, and drop an extraneous type qualifier from of_get_tve_mode().
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Merge tag 'imx-drm-next-2020-10-30' of git://git.pengutronix.de/git/pza/linux into drm-fixes

drm/imx: fixes and cleanups

Remove unused functions and empty callbacks, let the dw_hdmi-imx driver
reuse imx_drm_encoder_parse_of() instead of reimplementing it, replace
the custom register spinlock with the regmap default spinlock and remove
redundant tracking of enabled state in imx-tve, drop the explicit
drm_mode_config_cleanup() call in imx-drm-core, reduce the scope of edid
length variables that are not otherwise used in imx-ldb and
parallel-display, fix a memory leak in the parallel-display bind error
path, and drop an extraneous type qualifier from of_get_tve_mode().

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

From: Philipp Zabel <p.zabel@pengutronix.de>
Link: https://patchwork.freedesktop.org/patch/msgid/7e4af582027bbec269364b95f6978d061b48271a.camel@pengutronix.de
2020-11-06 11:09:21 +10:00
Pavel Begunkov 9a472ef7a3 io_uring: fix link lookup racing with link timeout
We can't just go over linked requests because it may race with linked
timeouts. Take ctx->completion_lock in that case.

Cc: stable@vger.kernel.org # v5.7+
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-11-05 15:36:40 -07:00
Benjamin Gwin 108aa50365 arm64: kexec_file: try more regions if loading segments fails
It's possible that the first region picked for the new kernel will make
it impossible to fit the other segments in the required 32GB window,
especially if we have a very large initrd.

Instead of giving up, we can keep testing other regions for the kernel
until we find one that works.

Suggested-by: Ryan O'Leary <ryanoleary@google.com>
Signed-off-by: Benjamin Gwin <bgwin@google.com>
Link: https://lore.kernel.org/r/20201103201106.2397844-1-bgwin@google.com
Signed-off-by: Will Deacon <will@kernel.org>
2020-11-05 21:48:05 +00:00
Lee Jones 2f62f4990d gpu: drm: bridge: analogix: analogix_dp_reg: Remove unused function 'analogix_dp_write_byte_to_dpcd'
Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/bridge/analogix/analogix_dp_reg.c:571:5: warning: no previous prototype for ‘analogix_dp_write_byte_to_dpcd’ [-Wmissing-prototypes]

Cc: Andrzej Hajda <a.hajda@samsung.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Laurent Pinchart <Laurent.pinchart@ideasonboard.com>
Cc: Jonas Karlman <jonas@kwiboo.se>
Cc: Jernej Skrabec <jernej.skrabec@siol.net>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Jason Yan <yanaijie@huawei.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201105144517.1826692-13-lee.jones@linaro.org
2020-11-05 22:18:44 +01:00
Lee Jones 5d89045b33 drm/panel: panel-ilitek-ili9322: Demote non-conformant kernel-doc header
Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_SRGB_THROUGH' not described in enum 'ili9322_input'
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_SRGB_ALIGNED' not described in enum 'ili9322_input'
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_SRGB_DUMMY_320X240' not described in enum 'ili9322_input'
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_SRGB_DUMMY_360X240' not described in enum 'ili9322_input'
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_DISABLED_1' not described in enum 'ili9322_input'
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_PRGB_THROUGH' not described in enum 'ili9322_input'
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_PRGB_ALIGNED' not described in enum 'ili9322_input'
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_YUV_640X320_YCBCR' not described in enum 'ili9322_input'
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_YUV_720X360_YCBCR' not described in enum 'ili9322_input'
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_DISABLED_2' not described in enum 'ili9322_input'
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_ITU_R_BT656_720X360_YCBCR' not described in enum 'ili9322_input'
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_ITU_R_BT656_640X320_YCBCR' not described in enum 'ili9322_input'
 drivers/gpu/drm/panel/panel-ilitek-ili9322.c:177: warning: Enum value 'ILI9322_INPUT_UNKNOWN' not described in enum 'ili9322_input'

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201105144517.1826692-17-lee.jones@linaro.org
2020-11-05 22:17:15 +01:00
Lee Jones 084ee219ef drm/panel: panel-simple: Fix 'struct panel_desc's header
Struct headers should start with 'struct <name>'

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/panel/panel-simple.c:42: warning: Cannot understand  * @modes: Pointer to array of fixed modes appropriate for this panel.  If

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201105144517.1826692-12-lee.jones@linaro.org
2020-11-05 22:15:06 +01:00
Lee Jones d2a58fd1f0 gpu/host1x: bus: Add missing description for 'driver'
Fixes the following W=1 kernel build warning(s):

 drivers/gpu/host1x/bus.c:40: warning: Function parameter or member 'driver' not described in 'host1x_subdev_add'

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201105144517.1826692-2-lee.jones@linaro.org
2020-11-05 22:12:55 +01:00
YueHaibing c2530cc961 drm/bridge: tpd12s015: Fix irq registering in tpd12s015_probe
gpiod_to_irq() return negative value in case of error,
the existing code doesn't handle negative error codes.
If the HPD gpio supports IRQs (gpiod_to_irq returns a
valid number), we use the IRQ. If it doesn't (gpiod_to_irq
returns an error), it gets polled via detect().

Fixes: cff5e6f7e8 ("drm/bridge: Add driver for the TI TPD12S015 HDMI level shifter")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20201102143024.26216-1-yuehaibing@huawei.com
2020-11-05 22:09:09 +01:00
Anand K Mistry 1978b3a53a x86/speculation: Allow IBPB to be conditionally enabled on CPUs with always-on STIBP
On AMD CPUs which have the feature X86_FEATURE_AMD_STIBP_ALWAYS_ON,
STIBP is set to on and

  spectre_v2_user_stibp == SPECTRE_V2_USER_STRICT_PREFERRED

At the same time, IBPB can be set to conditional.

However, this leads to the case where it's impossible to turn on IBPB
for a process because in the PR_SPEC_DISABLE case in ib_prctl_set() the

  spectre_v2_user_stibp == SPECTRE_V2_USER_STRICT_PREFERRED

condition leads to a return before the task flag is set. Similarly,
ib_prctl_get() will return PR_SPEC_DISABLE even though IBPB is set to
conditional.

More generally, the following cases are possible:

1. STIBP = conditional && IBPB = on for spectre_v2_user=seccomp,ibpb
2. STIBP = on && IBPB = conditional for AMD CPUs with
   X86_FEATURE_AMD_STIBP_ALWAYS_ON

The first case functions correctly today, but only because
spectre_v2_user_ibpb isn't updated to reflect the IBPB mode.

At a high level, this change does one thing. If either STIBP or IBPB
is set to conditional, allow the prctl to change the task flag.
Also, reflect that capability when querying the state. This isn't
perfect since it doesn't take into account if only STIBP or IBPB is
unconditionally on. But it allows the conditional feature to work as
expected, without affecting the unconditional one.

 [ bp: Massage commit message and comment; space out statements for
   better readability. ]

Fixes: 21998a3515 ("x86/speculation: Avoid force-disabling IBPB based on STIBP and enhanced IBRS.")
Signed-off-by: Anand K Mistry <amistry@google.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://lkml.kernel.org/r/20201105163246.v2.1.Ifd7243cd3e2c2206a893ad0a5b9a4f19549e22c6@changeid
2020-11-05 21:43:34 +01:00
Linus Torvalds 521b619acd linux-kselftest-kunit-fixes-5.10-rc3
This Kunit update for Linux 5.10-rc3 consists of several kunit_tool
 and documentation fixes.
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Merge tag 'linux-kselftest-kunit-fixes-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull Kunit fixes from Shuah Khan:
 "Several kunit_tool and documentation fixes"

* tag 'linux-kselftest-kunit-fixes-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: tools: fix kunit_tool tests for parsing test plans
  Documentation: kunit: Update Kconfig parts for KUNIT's module support
  kunit: test: fix remaining kernel-doc warnings
  kunit: Don't fail test suites if one of them is empty
  kunit: Fix kunit.py --raw_output option
2020-11-05 11:52:17 -08:00
Linus Torvalds 3249fe4563 Tracing fixes:
- Fix off-by-one error in retrieving the context buffer for trace_printk()
 
 - Fix off-by-one error in stack nesting limit
 
 - Fix recursion to not make all NMI code false positive as recursing
 
 - Stop losing events in function tracing when transitioning between irq context
 
 - Stop losing events in ring buffer when transitioning between irq context
 
 - Fix return code of error pointer in parse_synth_field() to prevent
   NULL pointer dereference.
 
 - Fix false positive of NMI recursion in kprobe event handling
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Merge tag 'trace-v5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

Pull tracing fixes from Steven Rostedt:

 - Fix off-by-one error in retrieving the context buffer for
   trace_printk()

 - Fix off-by-one error in stack nesting limit

 - Fix recursion to not make all NMI code false positive as recursing

 - Stop losing events in function tracing when transitioning between irq
   context

 - Stop losing events in ring buffer when transitioning between irq
   context

 - Fix return code of error pointer in parse_synth_field() to prevent
   NULL pointer dereference.

 - Fix false positive of NMI recursion in kprobe event handling

* tag 'trace-v5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
  kprobes: Tell lockdep about kprobe nesting
  tracing: Make -ENOMEM the default error for parse_synth_field()
  ring-buffer: Fix recursion protection transitions between interrupt context
  tracing: Fix the checking of stackidx in __ftrace_trace_stack
  ftrace: Handle tracing when switching between context
  ftrace: Fix recursion check for NMI test
  tracing: Fix out of bounds write in get_trace_buf
2020-11-05 11:41:38 -08:00
Linus Torvalds 6732b35485 hyperv-fixes for 5.10-rc3
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Merge tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux

Pull hyperv fixes from Wei Liu:

 - clarify a comment (Michael Kelley)

 - change a pr_warn() to pr_info() (Olaf Hering)

* tag 'hyperv-fixes-signed' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux:
  x86/hyperv: Clarify comment on x2apic mode
  hv_balloon: disable warning when floor reached
2020-11-05 11:32:03 -08:00
Linus Torvalds 6f3f374ac0 RDMA 5.10 second rc pull request
A few more merge window regressions that didn't make rc1:
 
 - New validation in the DMA layer triggers wrong use of the DMA layer in
   rxe, siw and rdmavt
 
 - Accidental change of a hypervisor facing ABI when widening the port
   speed u8 to u16 in vmw_pvrdma
 
 - Memory leak on error unwind in SRP target
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull rdma fixes from Jason Gunthorpe:
 "A few more merge window regressions that didn't make rc1:

   - New validation in the DMA layer triggers wrong use of the DMA layer
     in rxe, siw and rdmavt

   - Accidental change of a hypervisor facing ABI when widening the port
     speed u8 to u16 in vmw_pvrdma

   - Memory leak on error unwind in SRP target"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  RDMA/srpt: Fix typo in srpt_unregister_mad_agent docstring
  RDMA/vmw_pvrdma: Fix the active_speed and phys_state value
  IB/srpt: Fix memory leak in srpt_add_one
  RDMA: Fix software RDMA drivers for dma mapping error
2020-11-05 11:25:02 -08:00
Kent Russell 514ad1b6bb drm/amdgpu: Fix Arcturus fan speed reporting
Arcturus doesn't have a fan. The assumption of "if the manual fan
control bit isn't set, it's on automatic mode" does not hold true if the
fan is missing, and results in exposing an invalid value for fan speed.

The SMU metrics table accurately reflects the lack of fan and will
return 0 for the fan speed. Trying to use the
smu_v11_0_get_fan_speed_rpm function will return invalid data, so just
stick with the SMU metrics for Arcturus

Signed-off-by: Kent Russell <kent.russell@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-11-05 14:23:06 -05:00
Kevin Wang 71037bfc78 drm/amdgpu: add missing clock gating info in amdgpu_pm_info
add missing clock gating informations in amdgpu_pm_info
1. AMD_CG_SUPPORT_VCN_MGCG
2. AMD_CG_SUPPORT_HDP_DS
3. AMD_CG_SUPPORT_HDP_SD
4. AMD_CG_SUPPORT_IH_CG
5. AMD_CG_SUPPORT_JPEG_MGCG

Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Kenneth Feng <kenneth.feng@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2020-11-05 14:22:50 -05:00
Linus Torvalds cf26c71487 spi: Fixes for v5.10
A small collection of driver specific fixes that have come in since the
 merge window, nothing too major here but all good to ahve.
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Merge tag 'spi-fix-v5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A small collection of driver specific fixes that have come in since
  the merge window, nothing too major here but all good to have"

* tag 'spi-fix-v5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  spi: fsl-dspi: fix wrong pointer in suspend/resume
  spi: bcm2835: fix gpio cs level inversion
  spi: imx: fix runtime pm support for !CONFIG_PM
2020-11-05 11:16:34 -08:00
Linus Torvalds 3d55978f95 regulator: Fixes for v5.10
An addition to MAINTAINERS plus a fix for a nasty bootstrapping problem
 which caused problems when we need to read the voltage of a regulator
 that is not yet available during initialization, we were not correctly
 distinguishing between this case and the case where a regulator is put
 into a bypass mode.
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Merge tag 'regulator-fix-v5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator

Pull regulator fixes from Mark Brown:
 "An addition to MAINTAINERS plus a fix for a nasty bootstrapping
  problem which caused problems when we need to read the voltage of a
  regulator that is not yet available during initialization, we were not
  correctly distinguishing between this case and the case where a
  regulator is put into a bypass mode"

* tag 'regulator-fix-v5.10-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
  regulator: defer probe when trying to get voltage from unresolved supply
  MAINTAINERS: Add entry for Qualcomm IPQ4019 VQMMC regulator
2020-11-05 11:11:40 -08:00
Linus Torvalds f786dfa374 Power management fixes for 5.10-rc3.
- Unify the handling of managed and stateless device links in the
    runtime PM framework and prevent runtime PM references to devices
    from being leaked after device link removal (Rafael Wysocki).
 
  - Fix two mistakes in the cpuidle documentation (Julia Lawall).
 
  - Prevent the schedutil cpufreq governor from missing policy
    limits updates in some cases (Viresh Kumar).
 
  - Prevent static OPPs from being dropped by mistake (Viresh Kumar).
 
  - Prevent helper function in the OPP framework from returning
    prematurely (Viresh Kumar).
 
  - Prevent opp_table_lock from being held too long during removal
    of OPP tables with no more active references (Viresh Kumar).
 
  - Drop redundant semicolon from the Intel RAPL power capping
    driver (Tom Rix).
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Merge tag 'pm-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix the device links support in runtime PM, correct mistakes in
  the cpuidle documentation, fix the handling of policy limits changes
  in the schedutil cpufreq governor, fix assorted issues in the OPP
  (operating performance points) framework and make one janitorial
  change.

  Specifics:

   - Unify the handling of managed and stateless device links in the
     runtime PM framework and prevent runtime PM references to devices
     from being leaked after device link removal (Rafael Wysocki).

   - Fix two mistakes in the cpuidle documentation (Julia Lawall).

   - Prevent the schedutil cpufreq governor from missing policy limits
     updates in some cases (Viresh Kumar).

   - Prevent static OPPs from being dropped by mistake (Viresh Kumar).

   - Prevent helper function in the OPP framework from returning
     prematurely (Viresh Kumar).

   - Prevent opp_table_lock from being held too long during removal of
     OPP tables with no more active references (Viresh Kumar).

   - Drop redundant semicolon from the Intel RAPL power capping driver
     (Tom Rix)"

* tag 'pm-5.10-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM: runtime: Resume the device earlier in __device_release_driver()
  PM: runtime: Drop pm_runtime_clean_up_links()
  PM: runtime: Drop runtime PM references to supplier on link removal
  powercap/intel_rapl: remove unneeded semicolon
  Documentation: PM: cpuidle: correct path name
  Documentation: PM: cpuidle: correct typo
  cpufreq: schedutil: Don't skip freq update if need_freq_update is set
  opp: Reduce the size of critical section in _opp_table_kref_release()
  opp: Fix early exit from dev_pm_opp_register_set_opp_helper()
  opp: Don't always remove static OPPs in _of_add_opp_table_v1()
2020-11-05 11:04:29 -08:00
Linus Torvalds 1a092479f3 Fix highmem initialization on arm and xtensa
Recent refactoring of memblock iterators has broken initialization of
 highmem on arm and xtensa because it changed the way beginning and end of
 memory regions are rounded to PFNs. This fix restores the original
 behaviour.
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Merge tag 'fixes-2020-11-05' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock

Pull highmem initialization fix from Mike Rapoport:
 "Fix highmem initialization on arm and xtensa

  Recent refactoring of memblock iterators has broken initialization of
  highmem on arm and xtensa because it changed the way beginning and end
  of memory regions are rounded to PFNs. This fix restores the original
  behaviour"

* tag 'fixes-2020-11-05' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
  ARM, xtensa: highmem: avoid clobbering non-page aligned memory reservations
2020-11-05 10:57:01 -08:00
Linus Torvalds d1dd461207 Various gfs2 fixes
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Merge tag 'gfs2-v5.10-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2

Pull gfs2 fixes from Andreas Gruenbacher:
 "Various gfs2 fixes"

* tag 'gfs2-v5.10-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/gfs2/linux-gfs2:
  gfs2: Wake up when sd_glock_disposal becomes zero
  gfs2: Don't call cancel_delayed_work_sync from within delete work function
  gfs2: check for live vs. read-only file system in gfs2_fitrim
  gfs2: don't initialize statfs_change inodes in spectator mode
  gfs2: Split up gfs2_meta_sync into inode and rgrp versions
  gfs2: init_journal's undo directive should also undo the statfs inodes
  gfs2: Add missing truncate_inode_pages_final for sd_aspace
  gfs2: Free rd_bits later in gfs2_clear_rgrpd to fix use-after-free
2020-11-05 10:51:51 -08:00
Linus Torvalds e2557a2cde pci-v5.10-fixes-1
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Merge tag 'pci-v5.10-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - Fix ACS regression that broke device pass-through (Rajat Jain)

 - Revert DesignWare ATU memory resource to use last entry to fix
   Tegra194 regression (Rob Herring)

 - Remove duplicate mvebu resource requests to fix regression on Turris
   Omnia (Rob Herring)

* tag 'pci-v5.10-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: mvebu: Fix duplicate resource requests
  PCI: dwc: Restore ATU memory resource setup to use last entry
  PCI: Always enable ACS even if no ACS Capability
2020-11-05 10:41:14 -08:00
Anitha Chrisanthus ed794057b0 drm/kmb: Build files for KeemBay Display driver
v2: Added Maintainer entry
v3: Added one more Maintainer entry
v3: drop videomode_helpers

Cc: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1604538931-26726-8-git-send-email-anitha.chrisanthus@intel.com
2020-11-05 19:20:38 +01:00
Anitha Chrisanthus 98521f4d4b drm/kmb: Mipi DSI part of the display driver
Initializes Mipi DSI and sets up connects to ADV bridge

v2: removed license text
    upclassed dev_private, removed HAVE_IRQ. (Sam)

v3: Squashed all 59 commits to one

v4: review changes from Sam Ravnborg
	renamed dev_p to kmb

v5: corrected spellings
v6: corrected checkpatch warnings
v7: review changes Sam Ravnborg and Thomas Zimmerman
	removed unnecessary logs and defines and ifdef codes (Sam)
	split dphy_init_sequence smaller (Sam)
	removed redundant checks in kmb_dsi (Sam)
	changed kmb_dsi_init to drm_bridge_connector_init and
	drm_connector_attach_encoder to bridge's connector (Sam)
v8: call drm_bridge_attach with DRM_BRIDGE_ATTACH_NO_CONNECTOR
v9: renamed kmb_dsi_hw_init to kmb_dsi_mode_set (Daniel V)
v10: changes in driver to accommodate changes in DT to separate DSI
     entries (Sam R)
     added comments to clarify empty dsi host functions
     review changes from Sam to separate out DSI part,
     removed dependencies on drm side (Sam R)
v11: review changes for separate msscam node (Sam R, Neil A)
v12: fixed warnings Reported-by: kernel test robot <lkp@intel.com>

Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1604538931-26726-7-git-send-email-anitha.chrisanthus@intel.com
2020-11-05 19:20:23 +01:00
Anitha Chrisanthus 7f7b96a8a0 drm/kmb: Add support for KeemBay Display
This is a basic KMS atomic modesetting display driver for KeemBay family of
SOCs. Driver has no 2D or 3D graphics. It calls into the ADV bridge
driver at the connector level.

Single CRTC with LCD controller->mipi DSI->ADV bridge

Only 1080p resolution and single plane is supported at this time.

v2: moved extern to .h, removed license text
    use drm_dev_init, upclassed dev_private, removed HAVE_IRQ.(Sam)

v3: Squashed all 59 commits to one

v4: review changes from Sam Ravnborg
	renamed dev_p to kmb
	moved clocks under kmb_clock, consolidated clk initializations
	use drmm functions
	use DRM_GEM_CMA_DRIVER_OPS_VMAP

v5: corrected spellings
v6: corrected checkpatch warnings
v7: review changes Sam Ravnborg and Thomas Zimmerman
	removed kmb_crtc.h kmb_crtc_cleanup (Thomas)
	renamed mode_set, kmb_load, inlined unload (Thomas)
	moved remaining logging to drm_*(Thomas)
	re-orged driver initialization (Thomas)
	moved plane_status to drm_private (Sam)
	removed unnecessary logs and defines and ifdef codes (Sam)
	call helper_check in plane_atomic_check (Sam)
	renamed set to get for bpp and format functions(Sam)
	use drm helper functions for reset, duplicate/destroy state instead
	of kmb functions (Sam)
	removed kmb_priv from kmb_plane and removed kmb_plane_state (Sam)
v8: get clk_pll0 from display node in dt
v9: moved csc_coef_lcd to plane.c (Daniel Vetter)
    call drm_atomic_helper_shutdown in remove (Daniel V)
    use drm_crtc_handle_vblank (Daniel V)
    renamed kmb_dsi_hw_init to kmb_dsi_mode_set (Daniel V)
    complimentary changes to device tree changes (Rob)
v10: call drm_crtc_arm_vblank_event in atomic_flush (Daniel V)
     moved global vars to kmb_private and added locks (Daniel V)
     changes in driver to accommodate changes in DT to separate DSI
     entries (Sam R)
     review changes to separate mipi DSI (Sam R)
v11: review changes to separate msscam (Neil A,Sam R)
v12: fixed warnings Reported-by: kernel test robot <lkp@intel.com>

Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1604538931-26726-6-git-send-email-anitha.chrisanthus@intel.com
2020-11-05 19:20:17 +01:00
Anitha Chrisanthus 1bb8b7fcda drm/kmb: Keem Bay driver register definition
Register definitions for Keem Bay display driver

v2: removed license text (Sam)
v3: Squashed all 59 commits to one
v4: review changes from Sam Ravnborg
	renamed dev_p to kmb
v5: corrected spellings
v6: corrected checkpatch warnings
v7: removed redundant definitions
v8: removed redundant definitions, clean up (Sam R)

Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1604538931-26726-5-git-send-email-anitha.chrisanthus@intel.com
2020-11-05 19:20:10 +01:00
Anitha Chrisanthus d7e0798925 dt-bindings: display: bridge: Intel KeemBay DSI
This patch adds bindings for Intel KeemBay MIPI DSI

v2: corrected description for port

Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1604538931-26726-4-git-send-email-anitha.chrisanthus@intel.com
2020-11-05 19:20:07 +01:00
Anitha Chrisanthus 24c81b9e8e dt-bindings: display: Intel KeemBay MSSCAM
This patch add bindings for Intel KeemBay MSSCAM syscon

v2: fixed compatible (Sam R.)

Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1604538931-26726-3-git-send-email-anitha.chrisanthus@intel.com
2020-11-05 19:20:04 +01:00
Anitha Chrisanthus 5a76b1ed73 dt-bindings: display: Add support for Intel KeemBay Display
This patch adds bindings for Intel KeemBay Display

v2: review changes from Rob Herring
v3: review changes from Sam Ravnborg (removed mipi dsi entries, and
    encoder entry, connect port to dsi)
    MSSCAM is part of the display submodule and its used to reset LCD
    and MIPI DSI clocks, so its best to be on this device tree.
v4: review changes from Neil Armstrong and Sam - removed msscam
    entries

Signed-off-by: Anitha Chrisanthus <anitha.chrisanthus@intel.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/1604538931-26726-2-git-send-email-anitha.chrisanthus@intel.com
2020-11-05 19:19:56 +01:00
Shannon Nelson 2bcbf42add ionic: check port ptr before use
Check for corner case of port_init failure before using
the port_info pointer.

Fixes: 4d03e00a21 ("ionic: Add initial ethtool support")
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Link: https://lore.kernel.org/r/20201104195606.61184-1-snelson@pensando.io
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-05 09:58:25 -08:00
Atish Patra 1bd14a66ee
RISC-V: Remove any memblock representing unusable memory area
RISC-V limits the physical memory size by -PAGE_OFFSET. Any memory beyond
that size from DRAM start is unusable. Just remove any memblock pointing
to those memory region without worrying about computing the maximum size.

Signed-off-by: Atish Patra <atish.patra@wdc.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-11-05 09:56:17 -08:00
Takashi Iwai a6c96672a6 ASoC: Fixes for v5.10
A batch of driver specific fixes that have come up since the merge
 window, nothing particularly major here but all good to have.
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Merge tag 'asoc-fix-v5.10-rc2' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

ASoC: Fixes for v5.10

A batch of driver specific fixes that have come up since the merge
window, nothing particularly major here but all good to have.
2020-11-05 18:19:32 +01:00
Tommi Rantala 7d764b685e selftests: binderfs: use SKIP instead of XFAIL
XFAIL is gone since commit 9847d24af9 ("selftests/harness: Refactor XFAIL
into SKIP"), use SKIP instead.

Fixes: 9847d24af9 ("selftests/harness: Refactor XFAIL into SKIP")
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-11-05 10:08:15 -07:00
Tommi Rantala afba8b0a2c selftests: clone3: use SKIP instead of XFAIL
XFAIL is gone since commit 9847d24af9 ("selftests/harness: Refactor XFAIL
into SKIP"), use SKIP instead.

Fixes: 9847d24af9 ("selftests/harness: Refactor XFAIL into SKIP")
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-11-05 10:08:15 -07:00
Tommi Rantala 1d44d0dd61 selftests: core: use SKIP instead of XFAIL in close_range_test.c
XFAIL is gone since commit 9847d24af9 ("selftests/harness: Refactor XFAIL
into SKIP"), use SKIP instead.

Fixes: 9847d24af9 ("selftests/harness: Refactor XFAIL into SKIP")
Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Acked-by: Christian Brauner <christian.brauner@ubuntu.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-11-05 10:08:15 -07:00
Tommi Rantala f3ae6c6e8a selftests: proc: fix warning: _GNU_SOURCE redefined
Makefile already contains -D_GNU_SOURCE, so we can remove it from the
*.c files.

Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
2020-11-05 10:08:14 -07:00
Jens Axboe 6b47ab81c9 io_uring: use correct pointer for io_uring_show_cred()
Previous commit changed how we index the registered credentials, but
neglected to update one spot that is used when the personalities are
iterated through ->show_fdinfo(). Ensure we use the right struct type
for the iteration.

Reported-by: syzbot+a6d494688cdb797bdfce@syzkaller.appspotmail.com
Fixes: 1e6fa5216a ("io_uring: COW io_identity on mismatch")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-11-05 09:50:16 -07:00
Pavel Begunkov ef9865a442 io_uring: don't forget to task-cancel drained reqs
If there is a long-standing request of one task locking up execution of
deferred requests, and the defer list contains requests of another task
(all files-less), then a potential execution of __io_uring_task_cancel()
by that another task will sleep until that first long-standing request
completion, and that may take long.

E.g.
tsk1: req1/read(empty_pipe) -> tsk2: req(DRAIN)
Then __io_uring_task_cancel(tsk2) waits for req1 completion.

It seems we even can manufacture a complicated case with many tasks
sharing many rings that can lock them forever.

Cancel deferred requests for __io_uring_task_cancel() as well.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-11-05 09:15:24 -07:00
Christian König 2c16d29123 Revert "mm: mmap: fix fput in error path v2"
The kernel test robot is not happy with that.

This reverts commit 0227da01f2.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/394772/
2020-11-05 17:09:18 +01:00
Christian König e40b0b56ff Revert "mm: introduce vma_set_file function v4"
The kernel test robot is not happy with that.

This reverts commit 2b5b95b1ff.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/394773/
2020-11-05 17:08:43 +01:00
Jianxin Xiong 00efd65a65 dma-buf: Fix static checker warning
Here is the warning message:

	drivers/dma-buf/dma-buf.c:917 dma_buf_map_attachment()
	error: 'sg_table' dereferencing possible ERR_PTR()

Fix by adding error checking before dereferencing the pointer.

Fixes: ac80cd17a6 ("dma-buf: Clarify that dma-buf sg lists are page aligned")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Jianxin Xiong <jianxin.xiong@intel.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/398485/
2020-11-05 16:58:19 +01:00