diff options
| author | Andrey Grodzovsky <andrey.grodzovsky@amd.com> | 2020-10-14 13:10:06 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2020-10-21 17:33:43 -0400 |
| commit | 0d427f6c290c69827b2ca33c5f1386816992e4d8 (patch) | |
| tree | 443941fff7e110fb9fafc733a80a90247058ac3c /drivers/gpu | |
| parent | 0d142232d9436acab3578ee995472f58adcbf201 (diff) | |
drm/amd/display: Revert "drm/amd/display: Fix a list corruption"
This fixes regression on device unplug and/or driver unload.
[ 65.681501 < 0.000004>] BUG: kernel NULL pointer dereference, address: 0000000000000008
[ 65.681504 < 0.000003>] #PF: supervisor write access in kernel mode
[ 65.681506 < 0.000002>] #PF: error_code(0x0002) - not-present page
[ 65.681507 < 0.000001>] PGD 7c9437067 P4D 7c9437067 PUD 7c9db7067 PMD 0
[ 65.681511 < 0.000004>] Oops: 0002 [#1] SMP NOPTI
[ 65.681512 < 0.000001>] CPU: 8 PID: 127 Comm: kworker/8:1 Tainted: G W O 5.9.0-rc2-dev+ #59
[ 65.681514 < 0.000002>] Hardware name: System manufacturer System Product Name/PRIME X470-PRO, BIOS 4406 02/28/2019
[ 65.681525 < 0.000011>] Workqueue: events drm_connector_free_work_fn [drm]
[ 65.681535 < 0.000010>] RIP: 0010:drm_atomic_private_obj_fini+0x11/0x60 [drm]
[ 65.681537 < 0.000002>] Code: de 4c 89 e7 e8 70 f2 ba f8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 90 0f 1f 44 00 00 48 8b 47 08 48 8b 17 55 48 89 e5 53 <48> 89 42 08 48 89 10 48 b8 00 01 00 00 00 00 ad de 48 89 fb 48 89
[ 65.681541 < 0.000004>] RSP: 0018:ffffa5fa805efdd8 EFLAGS: 00010246
[ 65.681542 < 0.000001>] RAX: 0000000000000000 RBX: ffff9a4b094654d8 RCX: 0000000000000000
[ 65.681544 < 0.000002>] RDX: 0000000000000000 RSI: ffffffffba197bc2 RDI: ffff9a4b094654d8
[ 65.681545 < 0.000001>] RBP: ffffa5fa805efde0 R08: ffffffffba197b82 R09: 0000000000000040
[ 65.681547 < 0.000002>] R10: ffffa5fa805efdc8 R11: 000000000000007f R12: ffff9a4b09465888
[ 65.681549 < 0.000002>] R13: ffff9a4b36f20010 R14: ffff9a4b36f20290 R15: ffff9a4b3a692840
[ 65.681551 < 0.000002>] FS: 0000000000000000(0000) GS:ffff9a4b3ea00000(0000) knlGS:0000000000000000
[ 65.681553 < 0.000002>] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 65.681554 < 0.000001>] CR2: 0000000000000008 CR3: 00000007c9c82000 CR4: 00000000003506e0
[ 65.681556 < 0.000002>] Call Trace:
[ 65.681561 < 0.000005>] drm_dp_mst_topology_mgr_destroy+0xc4/0xe0 [drm_kms_helper]
[ 65.681612 < 0.000051>] amdgpu_dm_connector_destroy+0x3d/0x110 [amdgpu]
[ 65.681622 < 0.000010>] drm_connector_free_work_fn+0x78/0x90 [drm]
[ 65.681624 < 0.000002>] process_one_work+0x164/0x410
[ 65.681626 < 0.000002>] worker_thread+0x4d/0x450
[ 65.681628 < 0.000002>] ? rescuer_thread+0x390/0x390
[ 65.681630 < 0.000002>] kthread+0x10a/0x140
[ 65.681632 < 0.000002>] ? kthread_unpark+0x70/0x70
[ 65.681634 < 0.000002>] ret_from_fork+0x22/0x30
This reverts commit 1545fbf97eafc1dbdc2923e58b4186b16a834784.
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index bb1bc7f5d149..51223450918a 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -5063,7 +5063,6 @@ static void amdgpu_dm_connector_destroy(struct drm_connector *connector) struct amdgpu_device *adev = drm_to_adev(connector->dev); struct amdgpu_display_manager *dm = &adev->dm; - drm_atomic_private_obj_fini(&aconnector->mst_mgr.base); #if defined(CONFIG_BACKLIGHT_CLASS_DEVICE) ||\ defined(CONFIG_BACKLIGHT_CLASS_DEVICE_MODULE) |