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drm/amdgpu: Fix potential null pointer derefernce 

[ Upstream commit 80285ae1ec8717b597b20de38866c29d84d321a1 ]

The amdgpu_ras_get_context may return NULL if device
not support ras feature, so add check before using.

Signed-off-by: Stanley.Yang <Stanley.Yang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Stanley.Yang 2023-09-27 16:22:29 +08:00 committed by Greg Kroah-Hartman
parent b3b8b7c040
commit da46e63482
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@ -5183,7 +5183,8 @@ int amdgpu_device_gpu_recover(struct amdgpu_device *adev,
* Flush RAM to disk so that after reboot
* the user can read log and see why the system rebooted.
*/
if (need_emergency_restart && amdgpu_ras_get_context(adev)->reboot) {
if (need_emergency_restart && amdgpu_ras_get_context(adev) &&
amdgpu_ras_get_context(adev)->reboot) {
DRM_WARN("Emergency reboot.");
ksys_sync_helper();