* [PATCH AUTOSEL 5.4 1/6] drm/amdgpu: Fix the null pointer dereference to ras_manager
@ 2024-07-28 15:50 Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2024-07-28 15:50 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Ma Jun, Lijo Lazar, Alex Deucher, Sasha Levin, christian.koenig,
Xinhui.Pan, airlied, daniel, Hawking.Zhang, tao.zhou1,
kevinyang.wang, YiPeng.Chai, Stanley.Yang, candice.li, amd-gfx,
dri-devel
From: Ma Jun <Jun.Ma2@amd.com>
[ Upstream commit 4c11d30c95576937c6c35e6f29884761f2dddb43 ]
Check ras_manager before using it
Signed-off-by: Ma Jun <Jun.Ma2@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 b6fc191c353a7..96aad6cc83b1e 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -1053,12 +1053,15 @@ 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
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