Messages in this thread Patch in this message |  | | From | Dong Chuanjian <> | Subject | [PATCH] drivers/media/v4l2-core/v4l2-h264 : add detection of null pointers | Date | Tue, 27 Dec 2022 10:36:25 +0800 |
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When the pointer variable is judged to be null, null is returned directly.
Signed-off-by: Dong Chuanjian <chuanjian@nfschina.com> --- v2: Directly return when pointer allocation fails. v3: problems in synchronous repair format_ref_list_p
diff --git a/drivers/media/v4l2-core/v4l2-h264.c b/drivers/media/v4l2-core/v4l2-h264.c index 72bd64f65198..f6684c1d7319 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 == NULL) + return NULL; n += snprintf(*out_str + n, tmp_str_size - n, "|"); @@ -343,6 +345,8 @@ static const char *format_ref_list_b(const struct v4l2_h264_reflist_builder *bui int n = 0, i; *out_str = kmalloc(tmp_str_size, GFP_KERNEL); + if (*out_str == NULL) + return NULL; n += snprintf(*out_str + n, tmp_str_size - n, "|"); -- 2.18.2
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