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1c6ceeee6e
linux/drivers/gpu/drm
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Leo (Sunpeng) Li 1c6ceeee6e drm/atomic: Fix memleak on ERESTARTSYS during non-blocking commits 
During a non-blocking commit, it is possible to return before the
commit_tail work is queued (-ERESTARTSYS, for example).

Since a reference on the crtc commit object is obtained for the pending
vblank event when preparing the commit, the above situation will leave
us with an extra reference.

Therefore, if the commit_tail worker has not consumed the event at the
end of a commit, release it's reference.

Changes since v1:
- Also check for state->event->base.completion being set, to
  handle the case where stall_checks() fails in setup_crtc_commit().
Changes since v2:
- Add a flag to drm_crtc_commit, to prevent dereferencing a freed event.
  i915 may unreference the state in a worker.

Fixes: 24835e442f ("drm: reference count event->completion")
Cc: <stable@vger.kernel.org> # v4.11+
Signed-off-by: Leo (Sunpeng) Li <sunpeng.li@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com> #v1
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180117115108.29608-1-maarten.lankhorst@linux.intel.com
Reviewed-by: Sean Paul <seanpaul@chromium.org>
2018-01-30 11:27:26 +01:00
..
amd drm/amd/pp: Implement get_max_high_clocks for CI/VI 2018-01-10 15:44:55 -05:00
arc drm/arc: Use drm_gem_cma_print_info() 2017-11-11 11:23:15 +01:00
arm drm/arm/mali-dp: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:41:36 +02:00
armada Merge branch 'drm-armada-devel-4.15' of git://git.armlinux.org.uk/~rmk/linux-arm into drm-next 2018-01-05 09:51:43 +10:00
ast drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 2017-12-28 09:48:19 -05:00
atmel-hlcdc drm/atmel-hlcdc: Use the alpha format field in drm_format_info 2018-01-29 12:08:37 +01:00
bochs drm/bochs: remove the default io_mem_pfn set 2017-12-27 11:34:51 -05:00
bridge Merge airlied/drm-next into drm-misc-next 2018-01-19 12:32:05 -05:00
cirrus drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 2017-12-28 09:48:19 -05:00
etnaviv drm/etnaviv: use memset32 to init pagetable 2018-01-02 17:36:53 +01:00
exynos drm/atmel-exynos: Use the alpha format field in drm_format_info 2018-01-29 12:08:42 +01:00
fsl-dcu drm/fsl-dcu: Use drm_mode_config_helper_suspend/resume() 2017-12-05 13:46:41 +01:00
gma500 drm/gma500: Use drm_fb_helper_lastclose() and _poll_changed() 2017-12-08 13:05:22 +01:00
hisilicon drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 2017-12-28 09:48:19 -05:00
i2c drm/i2c: tda998x: Remove duplicate NULL check 2018-01-18 16:24:38 +02:00
i810
i915 drm/i915: Provide a device level .mode_valid() hook 2018-01-29 21:55:07 +02:00
imx drm/imx: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:41:42 +02:00
lib License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
mediatek drm/mediatek: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:41:45 +02:00
meson drm/meson: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:41:49 +02:00
mga
mgag200 drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 2017-12-28 09:48:19 -05:00
msm drm/msm/mdp5: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:41:52 +02:00
mxsfb
nouveau drm/nouveau/kms/nv50: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:41:55 +02:00
omapdrm Linux 4.15-rc8 2018-01-18 09:32:15 +10:00
panel drm/panel: panasonic-vvx10f034n00: More return value fixes 2018-01-22 12:32:37 -05:00
pl111 drm/pl111: Support handling bridge timings 2018-01-12 14:14:50 +05:30
qxl drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 2017-12-28 09:48:19 -05:00
r128
radeon drm/radeon: Add dpm quirk for Jet PRO (v2) 2018-01-10 15:44:14 -05:00
rcar-du drm: rcar-du: Clip planes to screen boundaries 2017-12-04 18:38:31 +02:00
rockchip drm/rockchip: Use the alpha format field in drm_format_info 2018-01-29 12:08:48 +01:00
savage
scheduler drm/scheduler: add license to the Makefile 2017-12-07 11:52:29 -05:00
selftests Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-12-04 05:42:49 +10:00
shmobile main drm pull request for v4.15 2017-11-15 20:42:10 -08:00
sis
sti drm/sti: Use drm_fb_cma_fbdev_init/fini() 2017-12-08 14:47:41 +01:00
stm drm/stm: ltdc: use crtc_mode_fixup to update adjusted_mode clock 2018-01-29 11:07:16 +01:00
sun4i drm/sun4i: backend: Check for the number of alpha planes 2018-01-29 14:02:42 +01:00
tdfx
tegra drm/tegra/dc: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:58:56 +02:00
tilcdc drm/tilcdc changes for 4.16 2017-12-21 11:10:20 +10:00
tinydrm drm/tinydrm/mipi-dbi: Change reset active time 2018-01-15 15:17:24 +01:00
ttm Linux 4.15-rc8 2018-01-18 09:32:15 +10:00
tve200 drm/tve200: Use drm_fb_cma_fbdev_init/fini() 2017-12-08 14:47:42 +01:00
udl Merge tag 'drm-misc-next-2017-10-20' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-10-24 16:51:05 +10:00
vc4 drm/vc4: Use the alpha format field in drm_format_info 2018-01-29 14:02:32 +01:00
vgem treewide: setup_timer() -> timer_setup() 2017-11-21 15:57:07 -08:00
via Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-12-04 05:42:49 +10:00
virtio drm/ttm: use an operation ctx for ttm_tt_populate in ttm_bo_driver (v2) 2017-12-28 09:48:19 -05:00
vmwgfx drm/vmwgfx: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:59:13 +02:00
zte drm/zte: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:59:14 +02:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.c drm/atomic: Fix memleak on ERESTARTSYS during non-blocking commits 2018-01-30 11:27:26 +01:00
drm_atomic.c drm/modes: Provide global mode_valid hook 2018-01-29 21:51:51 +02:00
drm_auth.c drm: Check mode object lease status in all master ioctl paths [v4] 2017-10-25 16:31:30 +10:00
drm_blend.c drm/atomic-helper: Make zpos property kerneldoc less misleading 2017-12-14 14:20:35 +01:00
drm_bridge.c
drm_bufs.c
drm_cache.c
drm_color_mgmt.c
drm_connector.c drm: Warn if plane/crtc/encoder/connector index exceeds our 32bit bitmasks 2018-01-29 18:46:53 +02:00
drm_context.c
drm_crtc_helper_internal.h
drm_crtc_helper.c
drm_crtc_internal.h drm: rework delayed connector cleanup in connector_iter 2017-12-13 22:59:00 +01:00
drm_crtc.c drm/modes: Provide global mode_valid hook 2018-01-29 21:51:51 +02:00
drm_debugfs_crc.c
drm_debugfs.c drm/debugfs: Fix framebuffer debugfs file init 2017-11-14 11:08:17 +02:00
drm_dma.c
drm_dp_aux_dev.c Pass mode to wait_on_atomic_t() action funcs and provide default actions 2017-11-13 15:38:16 +00:00
drm_dp_dual_mode_helper.c
drm_dp_helper.c drm/dp: Add HBR3 support in existing DRM DP helpers 2018-01-26 13:36:53 +02:00
drm_dp_mst_topology.c drm/dp: Add HBR3 support in existing DRM DP helpers 2018-01-26 13:36:53 +02:00
drm_drv.c Merge airlied/drm-next into drm-misc-next 2017-11-21 14:17:56 +01:00
drm_dumb_buffers.c
drm_edid_load.c
drm_edid.c drm/edid: kerneldoc for is_hdmi2_sink 2017-12-15 11:13:15 +01:00
drm_encoder_slave.c
drm_encoder.c drm: Warn if plane/crtc/encoder/connector index exceeds our 32bit bitmasks 2018-01-29 18:46:53 +02:00
drm_fb_cma_helper.c drm/cma-helper: Add drm_fb_cma_fbdev_init/fini() 2017-12-08 14:27:47 +01:00
drm_fb_helper.c drm/framebuffer: Print task that allocated the fb in debug info. 2017-12-20 15:30:17 +01:00
drm_file.c
drm_flip_work.c
drm_fourcc.c drm/fourcc: Add a alpha field to drm_format_info 2018-01-29 12:07:47 +01:00
drm_framebuffer.c drm/framebuffer: Print task that allocated the fb in debug info. 2017-12-20 15:30:17 +01:00
drm_gem_cma_helper.c drm: gem_cma_helper.c: Allow importing of contiguous scatterlists with nents > 1 2017-11-15 18:14:46 +01:00
drm_gem_framebuffer_helper.c drm/gem-fb-helper: drm_gem_fbdev_fb_create() make funcs optional 2017-12-08 14:26:00 +01:00
drm_gem.c drm/framebuffer: Add framebuffer debugfs file 2017-11-11 11:21:19 +01:00
drm_global.c
drm_hashtab.c
drm_info.c
drm_internal.h Merge airlied/drm-next into drm-misc-next 2017-11-21 14:17:56 +01:00
drm_ioc32.c
drm_ioctl.c drm/ioctl: Remove trailing whitespace 2018-01-11 17:48:58 +01:00
drm_irq.c
drm_kms_helper_common.c
drm_lease.c drm: move lease init after validation in drm_lease_create 2017-12-21 09:49:40 +01:00
drm_legacy.h
drm_lock.c
drm_memory.c
drm_mipi_dsi.c drm/dsi: Fix improper use of mipi_dsi_device_transfer() return value 2018-01-16 17:10:14 -05:00
drm_mm.c Linux 4.15-rc4 2017-12-19 21:37:24 +10:00
drm_mode_config.c Linux 4.15-rc4 2017-12-19 21:37:24 +10:00
drm_mode_object.c drm/mode_object: fix documentation for object lookups. 2017-11-10 13:50:47 +10:00
drm_modes.c drm/modes: Provide global mode_valid hook 2018-01-29 21:51:51 +02:00
drm_modeset_helper.c drm/modeset-helper: Add simple modeset suspend/resume helpers 2017-11-30 18:18:08 +01:00
drm_modeset_lock.c drm: Require __GFP_NOFAIL for the legacy drm_modeset_lock_all 2017-10-31 17:36:46 +01:00
drm_of.c
drm_panel_orientation_quirks.c drm: fix tainted kernel caused by drm_panel_orientation_quirks.c 2017-12-23 20:06:45 +01:00
drm_panel.c
drm_pci.c
drm_plane_helper.c drm: Move drm_plane_helper_check_state() into drm_atomic_helper.c 2017-11-20 21:14:22 +02:00
drm_plane.c drm: Warn if plane/crtc/encoder/connector index exceeds our 32bit bitmasks 2018-01-29 18:46:53 +02:00
drm_prime.c drm: add kernel doc for exported gem dmabuf_ops 2018-01-19 11:14:59 -05:00
drm_print.c drm/printer: Add drm_vprintf() 2017-11-23 12:31:49 +02:00
drm_probe_helper.c drm/modes: Provide global mode_valid hook 2018-01-29 21:51:51 +02:00
drm_property.c
drm_rect.c
drm_scatter.c
drm_scdc_helper.c
drm_simple_kms_helper.c drm/simple_kms_helper: Use drm_mode_get_hv_timing() to populate plane clip rectangle 2018-01-23 17:41:40 +02:00
drm_syncobj.c Linux 4.15-rc8 2018-01-18 09:32:15 +10:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h main drm pull request for v4.15 2017-11-15 20:42:10 -08:00
drm_vblank.c Merge tag 'drm-misc-next-2017-11-30' of git://anongit.freedesktop.org/drm/drm-misc into drm-next 2017-12-04 05:42:49 +10:00
drm_vm.c
drm_vma_manager.c drm/drm_vma_manager.c: Remove useless goto statement 2017-11-02 10:44:08 +01:00
Kconfig Merge branch 'drm-next-4.16' of git://people.freedesktop.org/~agd5f/linux into drm-next 2017-12-21 11:17:45 +10:00
Makefile Merge branch 'drm-next-4.16' of git://people.freedesktop.org/~agd5f/linux into drm-next 2017-12-21 11:17:45 +10:00