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selftests/bpf: Fix possible NULL passed to memcpy() with zero size

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Prevent sanitizer from complaining about passing NULL into memcpy(),
even if it happens with zero size.

Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211124002325.1737739-9-andrii@kernel.org
This commit is contained in:
Andrii Nakryiko 2021-11-23 16:23:20 -08:00 committed by Daniel Borkmann
parent 486e648cb2
commit 3bd0233f38
1 changed files with 2 additions and 1 deletions
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3
tools/testing/selftests/bpf/prog_tests/core_reloc.c
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@ -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);