[PATCH ipsec-next v1 6/7] bpf: selftests: test_tunnel: Disable CO-RE relocations
From: Daniel Xu <hidden>
Date: 2023-11-22 18:21:25
Also in:
bpf, linux-kselftest, lkml
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [selftests] (test runners & infrastructure), kernel selftest framework, the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Shuah Khan, Shuah Khan, Linus Torvalds
Switching to vmlinux.h definitions seems to make the verifier very
unhappy with bitfield accesses. The error is:
; md.u.md2.dir = direction;
33: (69) r1 = *(u16 *)(r2 +11)
misaligned stack access off (0x0; 0x0)+-64+11 size 2
It looks like disabling CO-RE relocations seem to make the error go
away.
Co-developed-by: Antony Antony <redacted>
Signed-off-by: Antony Antony <redacted>
Signed-off-by: Daniel Xu <redacted>
---
tools/testing/selftests/bpf/progs/test_tunnel_kern.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
index 3065a716544d..ec7e04e012ae 100644
--- a/tools/testing/selftests/bpf/progs/test_tunnel_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tunnel_kern.c@@ -6,6 +6,7 @@ * modify it under the terms of version 2 of the GNU General Public * License as published by the Free Software Foundation. */ +#define BPF_NO_PRESERVE_ACCESS_INDEX #include "vmlinux.h" #include <bpf/bpf_helpers.h> #include <bpf/bpf_endian.h>
--
2.42.1