[PATCH 1/1] drm/amdkfd: Fix NULL pointer dereference

Felix Kuehling Felix.Kuehling at amd.com
Wed Apr 6 21:06:16 UTC 2022


Check that adev->gfx.ras is valid before using it.

Fixes: f385fc0d19ce ("drm/amdgpu: add UTCL2 RAS poison query for Aldebaran (v2)")
CC: Tao Zhou <tao.zhou1 at amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling at amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
index c18c4be1e4ac..64c6664b34e8 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd.c
@@ -727,7 +727,7 @@ void amdgpu_amdkfd_ras_poison_consumption_handler(struct amdgpu_device *adev, bo
 
 bool amdgpu_amdkfd_ras_query_utcl2_poison_status(struct amdgpu_device *adev)
 {
-	if (adev->gfx.ras->query_utcl2_poison_status)
+	if (adev->gfx.ras && adev->gfx.ras->query_utcl2_poison_status)
 		return adev->gfx.ras->query_utcl2_poison_status(adev);
 	else
 		return false;
-- 
2.32.0



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