This is a note to let you know that I've just added the patch titled perf util: Fix memory leak of prefix_if_not_in to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: perf-util-fix-memory-leak-of-prefix_if_not_in.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 3cca6981d7451349052e5afcd3142ed70aed784d Author: Xie XiuQi <xiexiuqi@xxxxxxxxxx> Date: Thu May 21 21:32:17 2020 +0800 perf util: Fix memory leak of prefix_if_not_in [ Upstream commit 07e9a6f538cbeecaf5c55b6f2991416f873cdcbd ] Need to free "str" before return when asprintf() failed to avoid memory leak. Signed-off-by: Xie XiuQi <xiexiuqi@xxxxxxxxxx> Cc: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx> Cc: Hongbo Yao <yaohongbo@xxxxxxxxxx> Cc: Jiri Olsa <jolsa@xxxxxxxxxx> Cc: Li Bin <huawei.libin@xxxxxxxxxx> Cc: Mark Rutland <mark.rutland@xxxxxxx> Cc: Namhyung Kim <namhyung@xxxxxxxxxx> Link: http://lore.kernel.org/lkml/20200521133218.30150-4-liwei391@xxxxxxxxxx Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c index 43d1d410854a3..4027906fd3e38 100644 --- a/tools/perf/util/sort.c +++ b/tools/perf/util/sort.c @@ -2788,7 +2788,7 @@ static char *prefix_if_not_in(const char *pre, char *str) return str; if (asprintf(&n, "%s,%s", pre, str) < 0) - return NULL; + n = NULL; free(str); return n;