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selftests/bpf: Fix check in global_data_init. 

The returned value of bpf_object__open_file() should be checked with
libbpf_get_error() rather than NULL. This fix prevents test_progs from
crash when test_global_data.o is not present.

Signed-off-by: Hao Luo <haoluo@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Andrii Nakryiko <andriin@fb.com>
Link: https://lore.kernel.org/bpf/20200903200528.747884-1-haoluo@google.com
This commit is contained in:
Hao Luo 2020-09-03 13:05:28 -07:00 committed by Alexei Starovoitov
parent b4ff7ad778
commit 95cec14b03
1 changed files with 2 additions and 1 deletions
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3
tools/testing/selftests/bpf/prog_tests/global_data_init.c
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@ -12,7 +12,8 @@ void test_global_data_init(void)
size_t sz;
obj = bpf_object__open_file(file, NULL);
if (CHECK_FAIL(!obj))
err = libbpf_get_error(obj);
if (CHECK_FAIL(err))
return;
map = bpf_object__find_map_by_name(obj, "test_glo.rodata");