[PATCH 5.14 529/849] selftests/bpf: Fix memory leak in test_ima

Greg Kroah-Hartman
2021-11-15T23:09:58Z

From: Kumar Kartikeya Dwivedi <memxor@gmail.com>

[ Upstream commit efadf2ad17a2d5dc90bda4e6e8b2f96af4c62dae ]

The allocated ring buffer is never freed, do so in the cleanup path.

Fixes: f446b570ac7e ("bpf/selftests: Update the IMA test to use BPF ring buffer")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20211028063501.2239335-9-memxor@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/bpf/prog_tests/test_ima.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/test_ima.c b/tools/testing/selftests/bpf/prog_tests/test_ima.c
index 0252f61d611a9..97d8a6f84f4ab 100644
--- a/tools/testing/selftests/bpf/prog_tests/test_ima.c
+++ b/tools/testing/selftests/bpf/prog_tests/test_ima.c
@@ -43,7 +43,7 @@ static int process_sample(void *ctx, void *data, size_t len)
void test_test_ima(void)
{
char measured_dir_template[] = "/tmp/ima_measuredXXXXXX";
- struct ring_buffer *ringbuf;
+ struct ring_buffer *ringbuf = NULL;
const char *measured_dir;
char cmd[256];

@@ -85,5 +85,6 @@ close_clean:
err = system(cmd);
CHECK(err, "failed to run command", "%s, errno = %d\n", cmd, errno);
close_prog:
+ ring_buffer__free(ringbuf);
ima__destroy(skel);
}
--
2.33.0