This is a note to let you know that I've just added the patch titled
drm/amdgpu: Fix the null pointer dereference to ras_manager
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
drm-amdgpu-fix-the-null-pointer-dereference-to-ras_m.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit b485a7af62ee9c6319a8282c6c1b87e5dc959490
Author: Ma Jun <Jun.Ma2@xxxxxxx>
Date: Sat May 11 15:48:02 2024 +0800
drm/amdgpu: Fix the null pointer dereference to ras_manager
[ Upstream commit 4c11d30c95576937c6c35e6f29884761f2dddb43 ]
Check ras_manager before using it
Signed-off-by: Ma Jun <Jun.Ma2@xxxxxxx>
Reviewed-by: Lijo Lazar <lijo.lazar@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index e971d2b9e3c00..56f10679a26d1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -1351,12 +1351,15 @@ static void amdgpu_ras_interrupt_process_handler(struct work_struct *work)
int amdgpu_ras_interrupt_dispatch(struct amdgpu_device *adev,
struct ras_dispatch_if *info)
{
- struct ras_manager *obj = amdgpu_ras_find_obj(adev, &info->head);
- struct ras_ih_data *data = &obj->ih_data;
+ struct ras_manager *obj;
+ struct ras_ih_data *data;
+ obj = amdgpu_ras_find_obj(adev, &info->head);
if (!obj)
return -EINVAL;
+ data = &obj->ih_data;
+
if (data->inuse == 0)
return 0;
