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Fixes: 49b57e0d01db ("tools/bpf: remove btf__get_strings() superseded by raw data API")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>
Acked-by: Song Liu <songliubraving@xxxxxx>
Acked-by: Yonghong Song <yhs@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
