From: Xiaoke Wang Date: Thu, 24 Mar 2022 09:15:08 +0000 (+0800) Subject: drm/msm/disp: check the return value of kzalloc() X-Git-Tag: v5.18-rc3~20^2~1^2~7 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f75e582b0c3ee8f0bddc2248cc8b9175f29c5937;p=thirdparty%2Fkernel%2Flinux.git drm/msm/disp: check the return value of kzalloc() 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 Reviewed-by: Abhinav Kumar Link: https://lore.kernel.org/r/tencent_B3E19486FF39415098B572B7397C2936C309@qq.com Signed-off-by: Rob Clark --- 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 5d2ff67910586..acfe1b31e0792 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);