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| author |   Tong Zhang <ztong0001@gmail.com> | 2021-03-21 11:19:07 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2021-04-09 16:42:00 -0400 |
| commit | 05eacc0f8f6c7e27f1841343611f4bed9ee178c1 (patch) | |
| tree | 6acc508cb1b72c62379a3985e3c47bfaf83db5d7 /drivers/gpu/drm/radeon/radeon_object.c | |
| parent | drm/amdgpu: replace per_device_list by array (diff) | |
| download | linux-dev-05eacc0f8f6c7e27f1841343611f4bed9ee178c1.tar.xz linux-dev-05eacc0f8f6c7e27f1841343611f4bed9ee178c1.zip | |
drm/radeon: don't evict if not initialized
TTM_PL_VRAM may not initialized at all when calling
radeon_bo_evict_vram(). We need to check before doing eviction.
[ 2.160837] BUG: kernel NULL pointer dereference, address: 0000000000000020
[ 2.161212] #PF: supervisor read access in kernel mode
[ 2.161490] #PF: error_code(0x0000) - not-present page
[ 2.161767] PGD 0 P4D 0
[ 2.163088] RIP: 0010:ttm_resource_manager_evict_all+0x70/0x1c0 [ttm]
[ 2.168506] Call Trace:
[ 2.168641] radeon_bo_evict_vram+0x1c/0x20 [radeon]
[ 2.168936] radeon_device_fini+0x28/0xf9 [radeon]
[ 2.169224] radeon_driver_unload_kms+0x44/0xa0 [radeon]
[ 2.169534] radeon_driver_load_kms+0x174/0x210 [radeon]
[ 2.169843] drm_dev_register+0xd9/0x1c0 [drm]
[ 2.170104] radeon_pci_probe+0x117/0x1a0 [radeon]
Reviewed-by: Christian König <christian.koenig@amd.com>
Suggested-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/radeon/radeon_object.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_object.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_object.c b/drivers/gpu/drm/radeon/radeon_object.c index 804f7a427be7..cee11c55fd15 100644 --- a/drivers/gpu/drm/radeon/radeon_object.c +++ b/drivers/gpu/drm/radeon/radeon_object.c @@ -380,6 +380,8 @@ int radeon_bo_evict_vram(struct radeon_device *rdev) } #endif man = ttm_manager_type(bdev, TTM_PL_VRAM); + if (!man) + return 0; return ttm_resource_manager_evict_all(bdev, man); } |