[PATCH bpf-next v4 7/7] selftests/bpf: Add rcu_read_lock test to s390x deny list

[Yonghong Song <yhs@fb.com>]

The new rcu_read_lock test will fail on s390x with the following error message:

  ...
  test_rcu_read_lock:PASS:join_cgroup /rcu_read_lock 0 nsec
  test_local_storage:PASS:skel_open 0 nsec
  libbpf: prog 'cgrp_succ': failed to find kernel BTF type ID of '__s390x_sys_getpgid': -3
  libbpf: prog 'cgrp_succ': failed to prepare load attributes: -3
  libbpf: prog 'cgrp_succ': failed to load: -3
  libbpf: failed to load object 'rcu_read_lock'
  libbpf: failed to load BPF skeleton 'rcu_read_lock': -3
  test_local_storage:FAIL:skel_load unexpected error: -3 (errno 3)
  ...

So add it to the s390x deny list.

Signed-off-by: Yonghong Song <yhs@fb.com>
---
 tools/testing/selftests/bpf/DENYLIST.s390x | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/testing/selftests/bpf/DENYLIST.s390x b/tools/testing/selftests/bpf/DENYLIST.s390x
index be4e3d47ea3e..dd5db40b5a09 100644
--- a/tools/testing/selftests/bpf/DENYLIST.s390x
+++ b/tools/testing/selftests/bpf/DENYLIST.s390x
@@ -41,6 +41,7 @@ module_attach                            # skel_attach skeleton attach failed: -
 mptcp
 netcnt                                   # failed to load BPF skeleton 'netcnt_prog': -7                               (?)
 probe_user                               # check_kprobe_res wrong kprobe res from probe read                           (?)
+rcu_read_lock                            # failed to find kernel BTF type ID of '__x64_sys_getpgid': -3                (?)
 recursion                                # skel_attach unexpected error: -524                                          (trampoline)
 ringbuf                                  # skel_load skeleton load failed                                              (?)
 select_reuseport                         # intermittently fails on new s390x setup
-- 
2.30.2