The pointer *out_str adds judgment and should help with program robustness. Signed-off-by: Li zeming <zeming@xxxxxxxxxxxx> --- drivers/media/v4l2-core/v4l2-h264.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-h264.c b/drivers/media/v4l2-core/v4l2-h264.c index 72bd64f65198..934aba539332 100644 --- a/drivers/media/v4l2-core/v4l2-h264.c +++ b/drivers/media/v4l2-core/v4l2-h264.c @@ -305,6 +305,8 @@ static const char *format_ref_list_p(const struct v4l2_h264_reflist_builder *bui int n = 0, i; *out_str = kmalloc(tmp_str_size, GFP_KERNEL); + if (!*out_str) + return NULL; n += snprintf(*out_str + n, tmp_str_size - n, "|"); -- 2.18.2
