From: Xiaoke Wang xkernel.wang@foxmail.com
[ Upstream commit f75e582b0c3ee8f0bddc2248cc8b9175f29c5937 ]
kzalloc() is a memory allocation function which can return NULL when some internal memory errors happen. So it is better to check it to prevent potential wrong memory access.
Signed-off-by: Xiaoke Wang xkernel.wang@foxmail.com Reviewed-by: Abhinav Kumar quic_abhinavk@quicinc.com Link: https://lore.kernel.org/r/tencent_B3E19486FF39415098B572B7397C2936C309@qq.co... Signed-off-by: Rob Clark robdclark@chromium.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c | 2 ++ 1 file changed, 2 insertions(+)
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 cabe15190ec1..369e57f73a47 100644 --- a/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c +++ b/drivers/gpu/drm/msm/disp/msm_disp_snapshot_util.c @@ -169,6 +169,8 @@ 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);