[Public]
Reviewed-by: Alex Deucher
From: Das, Nirmoy
Sent: Thursday, May 27, 2021 8:07 AM
To: Wentland, Harry
Cc: Deucher, Alexander ; Koenig, Christian
; amd-gfx@lists.freedesktop.org
; Das, Nirmoy
Subject: [PATCH 1/1] drm/amd/display: do not dereference on NULL
WARN_ON() will not kill the process so the second WARN_ON()
will try to dereference NULL pointer.
Signed-off-by: Nirmoy Das
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 5 -
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 1134cf6eac82..f2ed51484980 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -9108,7 +9108,10 @@ static void amdgpu_dm_atomic_commit_tail(struct
drm_atomic_state *state)
}
status = dc_stream_get_status(dm_new_crtc_state->stream);
- WARN_ON(!status);
+
+ if (WARN_ON(!status))
+ continue;
+
WARN_ON(!status->plane_count);
/*
--
2.31.1
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