Date: Wed, 9 Nov 2022 16:52:17 +0300
Subject: [PATCH 5.10] nbio_v7_4: Add pointer check
Return value of a function 'amdgpu_ras_find_obj' is dereferenced at nbio_v7_4.c:325 without checking for null
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Signed-off-by: Denis Arefev <arefev@xxxxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
index eadc9526d33f..d2627a610e48 100644
--- a/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
+++ b/drivers/gpu/drm/amd/amdgpu/nbio_v7_4.c
@@ -303,6 +303,9 @@ static void nbio_v7_4_handle_ras_controller_intr_no_bifring(struct amdgpu_device
struct ras_manager *obj = amdgpu_ras_find_obj(adev, adev->nbio.ras_if);
struct ras_err_data err_data = {0, 0, 0, NULL};
struct amdgpu_ras *ras = amdgpu_ras_get_context(adev);
+ if (!obj)
+ return;
bif_doorbell_intr_cntl = RREG32_SOC15(NBIO, 0, mmBIF_DOORBELL_INT_CNTL);
if (REG_GET_FIELD(bif_doorbell_intr_cntl,
--
2.25.1
