Save errno right after bpf_prog_test_run returns, so we later check
the error code actually set by bpf_prog_test_run, not by some libcap
function.
Changes since v1:
- Fix the "Fixes:" tag to mention actual commit that introduced the
bug
Changes since v2:
- Move the declaration so it fits the reverse christmas tree style.
Cc: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Fixes: 832c6f2c29ec ("bpf: test make sure to run unpriv test cases in test_verifier")
Signed-off-by: Krzesimir Nowak <krzesimir@xxxxxxxxxx>
---
tools/testing/selftests/bpf/test_verifier.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c
index b8d065623ead..3fe126e0083b 100644
--- a/tools/testing/selftests/bpf/test_verifier.c
+++ b/tools/testing/selftests/bpf/test_verifier.c
@@ -823,16 +823,18 @@ static int do_prog_test_run(int fd_prog, bool unpriv, uint32_t expected_val,
__u8 tmp[TEST_DATA_LEN << 2];
__u32 size_tmp = sizeof(tmp);
uint32_t retval;
+ int saved_errno;
int err;
if (unpriv)
set_admin(true);
err = bpf_prog_test_run(fd_prog, 1, data, size_data,
tmp, &size_tmp, &retval, NULL);
+ saved_errno = errno;
if (unpriv)
set_admin(false);
if (err) {
- switch (errno) {
+ switch (saved_errno) {
case 524/*ENOTSUPP*/:
printf("Did not run the program (not supported) ");
return 0;
--
2.20.1
