[PATCH 4.19 132/267] selftests/bpf: Fix memory leak in extract_build_id()

From: Greg Kroah-Hartman
Date: Fri Jun 19 2020 - 10:58:53 EST


From: Andrii Nakryiko <andriin@xxxxxx>

[ Upstream commit 9f56bb531a809ecaa7f0ddca61d2cf3adc1cb81a ]

getline() allocates string, which has to be freed.

Fixes: 81f77fd0deeb ("bpf: add selftest for stackmap with BPF_F_STACK_BUILD_ID")
Signed-off-by: Andrii Nakryiko <andriin@xxxxxx>
Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
Cc: Song Liu <songliubraving@xxxxxx>
Link: https://lore.kernel.org/bpf/20200429012111.277390-7-andriin@xxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
tools/testing/selftests/bpf/test_progs.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c
index 89f8b0dae7ef..bad3505d66e0 100644
--- a/tools/testing/selftests/bpf/test_progs.c
+++ b/tools/testing/selftests/bpf/test_progs.c
@@ -1118,6 +1118,7 @@ static int extract_build_id(char *build_id, size_t size)
len = size;
memcpy(build_id, line, len);
build_id[len] = '\0';
+ free(line);
return 0;
err:
fclose(fp);
--
2.25.1