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perf util: Fix memory leak of prefix_if_not_in

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[ Upstream commit 07e9a6f538cbeecaf5c55b6f2991416f873cdcbd ]

Need to free "str" before return when asprintf() failed to avoid memory
leak.

Signed-off-by: Xie XiuQi <xiexiuqi@huawei.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Hongbo Yao <yaohongbo@huawei.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Li Bin <huawei.libin@huawei.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: http://lore.kernel.org/lkml/20200521133218.30150-4-liwei391@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Xie XiuQi 2020-05-21 21:32:17 +08:00 committed by Greg Kroah-Hartman
parent b10dd4b3c1
commit 2076ee4ae5
1 changed files with 1 additions and 1 deletions
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2
tools/perf/util/sort.c
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@ -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;