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Message-Id: <20240510095803.472840-3-kunwu.chan@linux.dev>
Date: Fri, 10 May 2024 17:58:01 +0800
From: kunwu.chan@...ux.dev
To: ast@...nel.org,
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Cc: bpf@...r.kernel.org,
linux-kselftest@...r.kernel.org,
linux-kernel@...r.kernel.org,
Kunwu Chan <chentao@...inos.cn>
Subject: [PATCH bpf-next v2 2/4] selftests/bpf/sockopt: Add a null pointer check for the run_test
From: Kunwu Chan <chentao@...inos.cn>
There is a 'malloc' call, which can be unsuccessful.
Add the malloc failure checking to avoid possible null
dereference and give more information
about test fail reasons.
Signed-off-by: Kunwu Chan <chentao@...inos.cn>
---
tools/testing/selftests/bpf/prog_tests/sockopt.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/tools/testing/selftests/bpf/prog_tests/sockopt.c b/tools/testing/selftests/bpf/prog_tests/sockopt.c
index 5a4491d4edfe..bde63e1f74dc 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockopt.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockopt.c
@@ -1100,6 +1100,12 @@ static int run_test(int cgroup_fd, struct sockopt_test *test, bool use_io_uring)
}
optval = malloc(test->get_optlen);
+ if (!optval) {
+ log_err("Failed to allocate memory");
+ ret = -1;
+ goto close_sock_fd;
+ }
+
memset(optval, 0, test->get_optlen);
socklen_t optlen = test->get_optlen;
socklen_t expected_get_optlen = test->get_optlen_ret ?:
--
2.40.1
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