diff mbox series

drm: msm: add null pointer check

Message ID 20220329103416.2376616-1-lv.ruyi@zte.com.cn
State New
Headers show
Series drm: msm: add null pointer check | expand

Commit Message

Lv Ruyi March 29, 2022, 10:34 a.m. UTC 
From: Lv Ruyi <lv.ruyi@zte.com.cn>

kzalloc is a memory allocation function which can return NULL when some
internal memory errors happen. Add null pointer check to avoid
dereferencing null pointer.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
---
 drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
index 5d2ff6791058..acfe1b31e079 100644
--- a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
+++ b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c
@@ -176,6 +176,8 @@  void msm_disp_snapshot_add_block(struct msm_disp_state *disp_state, u32 len,
 	va_list va;
 
 	new_blk = kzalloc(sizeof(struct msm_disp_state_block), GFP_KERNEL);
+	if (!new_blk)
+		return;
 
 	va_start(va, fmt);