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From: Nirmoy Das <nirmoy.das@amd.com>
To: harry.wentland@amd.com
Cc: alexander.deucher@amd.com, Nirmoy Das <nirmoy.das@amd.com>,
	christian.koenig@amd.com, amd-gfx@lists.freedesktop.org
Subject: [PATCH 1/1] drm/amd/display: do not dereference on NULL
Date: Thu, 27 May 2021 14:07:37 +0200	[thread overview]
Message-ID: <20210527120737.25409-1-nirmoy.das@amd.com> (raw)

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@amd.com>
---
 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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             reply	other threads:[~2021-05-27 12:07 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-27 12:07 Nirmoy Das [this message]
2021-05-27 15:03 ` [PATCH 1/1] drm/amd/display: do not dereference on NULL Deucher, Alexander

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