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linux/drivers/gpu/drm
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Maarten Lankhorst 81e257e964 drm/atomic: Make drm_atomic_legacy_backoff reset crtc->acquire_ctx 
Atomic updates may acquire more state than initially locked through
drm_modeset_lock_crtc, running with heavy stress can cause a
WARN_ON(crtc->acquire_ctx) in drm_modeset_lock_crtc:

[  601.491296] ------------[ cut here ]------------
[  601.491366] WARNING: CPU: 0 PID: 2411 at
drivers/gpu/drm/drm_modeset_lock.c:191 drm_modeset_lock_crtc+0xeb/0xf0 [drm]
[  601.491369] Modules linked in: drm i915 drm_kms_helper
[  601.491414] CPU: 0 PID: 2411 Comm: kms_cursor_lega Tainted: G     U 4.7.0-rc4-patser+ #4798
[  601.491417] Hardware name: Intel Corporation Skylake Client
[  601.491420]  0000000000000000 ffff88044d153c98 ffffffff812ead28 0000000000000000
[  601.491425]  0000000000000000 ffff88044d153cd8 ffffffff810868e6 000000bf58058030
[  601.491431]  ffff880088b415e8 ffff880458058030 ffff88008a271548 ffff88008a271568
[  601.491436] Call Trace:
[  601.491443]  [<ffffffff812ead28>] dump_stack+0x4d/0x65
[  601.491447]  [<ffffffff810868e6>] __warn+0xc6/0xe0
[  601.491452]  [<ffffffff81086968>] warn_slowpath_null+0x18/0x20
[  601.491472]  [<ffffffffc00d4ffb>] drm_modeset_lock_crtc+0xeb/0xf0 [drm]
[  601.491491]  [<ffffffffc00c5526>] drm_mode_cursor_common+0x66/0x180 [drm]
[  601.491509]  [<ffffffffc00c91cc>] drm_mode_cursor_ioctl+0x3c/0x40 [drm]
[  601.491524]  [<ffffffffc00bc94d>] drm_ioctl+0x14d/0x530 [drm]
[  601.491540]  [<ffffffffc00c9190>] ? drm_mode_setcrtc+0x520/0x520 [drm]
[  601.491545]  [<ffffffff81176aeb>] ? handle_mm_fault+0x106b/0x1430
[  601.491550]  [<ffffffff81108441>] ? stop_one_cpu+0x61/0x70
[  601.491556]  [<ffffffff811bb71d>] do_vfs_ioctl+0x8d/0x570
[  601.491560]  [<ffffffff81290d7e>] ? security_file_ioctl+0x3e/0x60
[  601.491565]  [<ffffffff811bbc74>] SyS_ioctl+0x74/0x80
[  601.491571]  [<ffffffff810e321c>] ? posix_get_monotonic_raw+0xc/0x10
[  601.491576]  [<ffffffff8175b11b>] entry_SYSCALL_64_fastpath+0x13/0x8f
[  601.491581] ---[ end trace 56f3d3d85f000d00 ]---

For good measure, test mode_config.acquire_ctx too, although this should
never happen.

Testcase: kms_cursor_legacy
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
2016-06-24 11:10:36 +10:00
..
amd
drm/amd/powerplay: enable clock stretch feature for polaris
2016-06-21 10:22:42 -04:00
arc
drm/arcpgu: use dedicated memory area for frame buffer
2016-04-29 14:22:32 +03:00
arm
drm: hdlcd: Add information about the underlying framebuffers in debugfs
2016-06-02 17:45:55 +01:00
armada
drm: Nuke ->vblank_disable_allowed
2016-05-21 07:03:31 +10:00
ast
drm: Remove unused drm_device from drm_gem_object_lookup()
2016-05-17 08:47:30 +02:00
atmel-hlcdc
drm: atmel-hlcdc: Fix OF graph parsing
2016-06-21 14:15:45 +02:00
bochs
drm: Remove unused drm_device from drm_gem_object_lookup()
2016-05-17 08:47:30 +02:00
bridge
drm/bridge: Add Analogix anx78xx support
2016-05-12 11:32:14 +02:00
cirrus
drm: Remove unused drm_device from drm_gem_object_lookup()
2016-05-17 08:47:30 +02:00
etnaviv
drm/etnaviv: initialize iommu domain page size
2016-06-15 11:18:39 +02:00
exynos
drm/exynos: use logical AND in exynos_drm_plane_check_size()
2016-06-19 14:37:28 +09:00
fsl-dcu
drm/fsl-dcu: use flat regmap cache
2016-06-08 15:12:01 -07:00
gma500
drm: Nuke ->vblank_disable_allowed
2016-05-21 07:03:31 +10:00
hisilicon
drm/hisilicon: Fix DRM_INFO printed issue
2016-05-11 19:05:36 +08:00
i2c
Merge drm-fixes into drm-next.
2016-03-14 09:46:02 +10:00
i810
…
i915
drm/i915/fbc: Disable on HSW by default for now
2016-06-21 19:45:21 +03:00
imx
drm/imx: plane: Don't set plane->crtc in ipu_plane_update()
2016-05-30 09:14:00 +02:00
mediatek
drm/mediatek: mtk_dsi: Remove spurious drm_connector_unregister
2016-06-01 16:09:56 +02:00
mga
…
mgag200
drm/mgag200: Black screen fix for G200e rev 4
2016-06-01 15:25:04 +10:00
msm
drm/msm: fix potential submit error path issue
2016-06-04 14:45:50 -04:00
nouveau
drm/nouveau: fix for disabled fbdev emulation
2016-06-24 07:51:32 +10:00
omapdrm
drm/omap: fix unused variable warning in dsi & hdmi
2016-06-09 12:31:36 +10:00
panel
drm/panel: simple: Add support for TPK U.S.A. LLC Fusion 7" and 10.1" panels
2016-05-12 11:32:14 +02:00
qxl
qxl: catch qxlfb_create_pinned_object failures
2016-05-17 09:11:23 +02:00
r128
…
radeon
drm/radeon: fix asic initialization for virtualized environments
2016-06-13 15:37:34 -04:00
rcar-du
drm: Drop plane argument from __drm_atomic_helper_plane_destroy_state
2016-05-17 08:56:55 +02:00
rockchip
drm: Nuke ->vblank_disable_allowed
2016-05-21 07:03:31 +10:00
savage
…
shmobile
drm/shmobile: use drm_crtc_send_vblank_event()
2016-05-02 17:04:50 +02:00
sis
…
sti
drm/sti: remove extra mode fixup
2016-06-01 14:59:44 +10:00
sun4i
drm: sun4i: do cleanup if RGB output init fails
2016-05-30 08:28:33 +02:00
tdfx
…
tegra
Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
2016-05-23 11:48:48 -07:00
tilcdc
remove lots of IS_ERR_VALUE abuses
2016-05-27 15:26:11 -07:00
ttm
Linux 4.6-rc7
2016-05-09 13:49:56 +10:00
udl
drm: Remove unused drm_device from drm_gem_object_lookup()
2016-05-17 08:47:30 +02:00
vc4
drm/vc4: Make pageflip completion handling more robust.
2016-06-06 13:00:40 -07:00
vgem
drm: Remove unused drm_device from drm_gem_object_lookup()
2016-05-17 08:47:30 +02:00
via
mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macros
2016-04-04 10:41:08 -07:00
virtio
drm: Remove unused drm_device from drm_gem_object_lookup()
2016-05-17 08:47:30 +02:00
vmwgfx
objtool, drm/vmwgfx: Fix "duplicate frame pointer save" warning
2016-06-08 15:36:18 +02:00
ati_pcigart.c
…
drm_agpsupport.c
drm: Give drm_agp_clear drm_legacy_ prefix
2016-04-27 08:41:34 +02:00
drm_atomic_helper.c
drm: Drop connector argument from __drm_atomic_helper_connector_destroy_state
2016-05-17 08:57:05 +02:00
drm_atomic.c
drm/atomic: Make drm_atomic_legacy_backoff reset crtc->acquire_ctx
2016-06-24 11:10:36 +10:00
drm_auth.c
…
drm_bridge.c
drm: bridge: Make (pre/post) enable/disable callbacks optional
2016-03-29 08:34:05 +02:00
drm_bufs.c
drm: Hide master MAP cleanup in drm_bufs.c
2016-04-27 10:14:17 +02:00
drm_cache.c
x86/cpufeature: Remove cpu_has_clflush
2016-03-31 13:35:09 +02:00
drm_context.c
…
drm_crtc_helper.c
drm/crtc: only store the necessary data for set_config rollback
2016-06-15 10:47:54 +10:00
drm_crtc_internal.h
drm/mode: rework drm_mode_object_put to drm_mode_object_unregister.
2016-04-22 10:26:37 +10:00
drm_crtc.c
drm: fix fb refcount issue with atomic modesetting
2016-06-01 15:00:05 +10:00
drm_debugfs.c
…
drm_dma.c
…
drm_dp_aux_dev.c
drm/dp: Allow signals to interrupt drm_aux-dev reads/writes
2016-04-28 11:48:09 +02:00
drm_dp_dual_mode_helper.c
drm: Add helper for DP++ adaptors
2016-05-23 11:10:46 +03:00
drm_dp_helper.c
drm/dp_helper: Perform throw-away read before actual read in drm_dp_dpcd_read()
2016-04-22 18:52:24 +02:00
drm_dp_mst_topology.c
drm/dp/mst: Always clear proposed vcpi table for port.
2016-06-15 11:14:36 +10:00
drm_drv.c
drm: Protect dev->filelist with its own mutex
2016-04-27 10:16:17 +02:00
drm_edid_load.c
drm/edid: convert to use match_string() helper
2016-03-17 15:09:34 -07:00
drm_edid.c
drm/edid: add displayid detailed 1 timings to the modelist. (v1.1)
2016-05-23 11:35:31 +10:00
drm_encoder_slave.c
…
drm_fb_cma_helper.c
drm: Wrap direct calls to driver->gem_free_object from CMA
2016-06-01 15:00:28 +10:00
drm_fb_helper.c
drm/fb_helper: Fix references to dev->mode_config.num_connector
2016-05-17 15:44:41 +02:00
drm_flip_work.c
…
drm_fops.c
drm: Protect dev->filelist with its own mutex
2016-04-27 10:16:17 +02:00
drm_gem_cma_helper.c
drm: Wrap direct calls to driver->gem_free_object from CMA
2016-06-01 15:00:28 +10:00
drm_gem.c
drm: Remove unused drm_device from drm_gem_object_lookup()
2016-05-17 08:47:30 +02:00
drm_global.c
…
drm_hashtab.c
…
drm_info.c
drm: Protect dev->filelist with its own mutex
2016-04-27 10:16:17 +02:00
drm_internal.h
drm: Make drm_vm_open/close_locked private to drm_vm.c
2016-04-27 10:15:56 +02:00
drm_ioc32.c
…
drm_ioctl.c
drm: Move drm_getmap into drm_bufs.c and give it a legacy prefix
2016-04-27 08:42:48 +02:00
drm_irq.c
drm: Nuke ->vblank_disable_allowed
2016-05-21 07:03:31 +10:00
drm_kms_helper_common.c
…
drm_legacy.h
drm: Move drm_getmap into drm_bufs.c and give it a legacy prefix
2016-04-27 08:42:48 +02:00
drm_lock.c
…
drm_memory.c
…
drm_mipi_dsi.c
drm/dsi: Get DSI host by DT device node
2016-03-02 17:02:54 +01:00
drm_mm.c
…
drm_modes.c
drm: add missing drm_mode_set_crtcinfo call
2016-06-01 14:59:39 +10:00
drm_modeset_lock.c
…
drm_of.c
…
drm_panel.c
drm/panel: Flesh out kerneldoc
2016-05-06 16:04:48 +02:00
drm_pci.c
drm: Give drm_agp_clear drm_legacy_ prefix
2016-04-27 08:41:34 +02:00
drm_plane_helper.c
…
drm_platform.c
…
drm_prime.c
drm: Remove unused drm_device from drm_gem_object_lookup()
2016-05-17 08:47:30 +02:00
drm_probe_helper.c
drm: probe_helper: Hide ugly ifdef
2016-04-20 13:35:14 +02:00
drm_rect.c
…
drm_scatter.c
…
drm_sysfs.c
drm/sysfs: Annote lockless show functions with READ_ONCE
2016-04-26 13:23:24 +02:00
drm_trace_points.c
…
drm_trace.h
…
drm_vm.c
drm: Make drm_vm_open/close_locked private to drm_vm.c
2016-04-27 10:15:56 +02:00
drm_vma_manager.c
…
Kconfig
drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.
2016-05-06 17:47:35 +02:00
Makefile
Merge tag 'drm-intel-next-fixes-2016-05-25' of git://anongit.freedesktop.org/drm-intel into drm-next
2016-05-27 16:08:38 +10:00