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[Public]
Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx>
From: Das, Nirmoy <Nirmoy.Das@xxxxxxx>
Sent: Thursday, May 27, 2021 8:07 AM To: Wentland, Harry <Harry.Wentland@xxxxxxx> Cc: Deucher, Alexander <Alexander.Deucher@xxxxxxx>; Koenig, Christian <Christian.Koenig@xxxxxxx>; amd-gfx@xxxxxxxxxxxxxxxxxxxxx <amd-gfx@xxxxxxxxxxxxxxxxxxxxx>; Das, Nirmoy <Nirmoy.Das@xxxxxxx> 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 <nirmoy.das@xxxxxxx> --- 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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