[PATCH AUTOSEL 6.1 03/17] drm/amdgpu: Fix the null pointer dereference to ras_manager

From: Sasha Levin
Date: Sun Jul 28 2024 - 11:57:20 EST


From: Ma Jun <Jun.Ma2@xxxxxxx>

[ 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>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index ee83d282b49a8..4b7b3278a05f1 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -1679,12 +1679,15 @@ 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;

--
2.43.0