Messages in this thread Patch in this message | | | From | kunwu.chan@linux ... | Subject | [PATCH bpf-next v2 3/4] selftests/bpf: Add a null pointer check for the load_btf_spec | Date | Fri, 10 May 2024 17:58:02 +0800 |
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From: Kunwu Chan <chentao@kylinos.cn>
There is a 'malloc' call, which can be unsuccessful. Add the malloc failure checking to avoid possible null dereference.
Signed-off-by: Kunwu Chan <chentao@kylinos.cn> --- tools/testing/selftests/bpf/test_verifier.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c index df04bda1c927..9c80b2943418 100644 --- a/tools/testing/selftests/bpf/test_verifier.c +++ b/tools/testing/selftests/bpf/test_verifier.c @@ -762,6 +762,8 @@ static int load_btf_spec(__u32 *types, int types_len, ); raw_btf = malloc(sizeof(hdr) + types_len + strings_len); + if (!raw_btf) + return -ENOMEM; ptr = raw_btf; memcpy(ptr, &hdr, sizeof(hdr)); -- 2.40.1
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