From: Andrii Nakryiko Date: Wed, 24 Nov 2021 00:23:20 +0000 (-0800) Subject: selftests/bpf: Fix possible NULL passed to memcpy() with zero size X-Git-Tag: howlett/maple/20220722_2~1498^2~228^2~39 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=3bd0233f388e061c44d36a1ac614a3bb4a851b7e;p=users%2Fjedix%2Flinux-maple.git selftests/bpf: Fix possible NULL passed to memcpy() with zero size Prevent sanitizer from complaining about passing NULL into memcpy(), even if it happens with zero size. Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20211124002325.1737739-9-andrii@kernel.org --- diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c index 1041d0c593f6..44a9868c70ea 100644 --- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c +++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c @@ -881,7 +881,8 @@ void test_core_reloc(void) data = mmap_data; memset(mmap_data, 0, sizeof(*data)); - memcpy(data->in, test_case->input, test_case->input_len); + if (test_case->input_len) + memcpy(data->in, test_case->input, test_case->input_len); data->my_pid_tgid = my_pid_tgid; link = bpf_program__attach_raw_tracepoint(prog, tp_name);