btf_dedup testing code doesn't account for length of struct btf_header when calculating the start of a string section. This patch fixes this problem. Fixes: 49b57e0d01db ("tools/bpf: remove btf__get_strings() superseded by raw data API") Signed-off-by: Andrii Nakryiko <andriin@xxxxxx> --- tools/testing/selftests/bpf/.gitignore | 1 + tools/testing/selftests/bpf/test_btf.c | 4 ++-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/testing/selftests/bpf/.gitignore b/tools/testing/selftests/bpf/.gitignore index e47168d1257d..3b74d23fffab 100644 --- a/tools/testing/selftests/bpf/.gitignore +++ b/tools/testing/selftests/bpf/.gitignore @@ -14,6 +14,7 @@ feature test_libbpf_open test_sock test_sock_addr +test_sock_fields urandom_read test_btf test_sockmap diff --git a/tools/testing/selftests/bpf/test_btf.c b/tools/testing/selftests/bpf/test_btf.c index 02d314383a9c..1426c0a905c8 100644 --- a/tools/testing/selftests/bpf/test_btf.c +++ b/tools/testing/selftests/bpf/test_btf.c @@ -5936,9 +5936,9 @@ static int do_test_dedup(unsigned int test_num) } test_hdr = test_btf_data; - test_strs = test_btf_data + test_hdr->str_off; + test_strs = test_btf_data + sizeof(*test_hdr) + test_hdr->str_off; expect_hdr = expect_btf_data; - expect_strs = expect_btf_data + expect_hdr->str_off; + expect_strs = expect_btf_data + sizeof(*test_hdr) + expect_hdr->str_off; if (CHECK(test_hdr->str_len != expect_hdr->str_len, "test_hdr->str_len:%u != expect_hdr->str_len:%u", test_hdr->str_len, expect_hdr->str_len)) { -- 2.17.1