From: Viktor Malik Date: Mon, 9 Mar 2026 11:23:58 +0000 (+0100) Subject: selftests/bpf: Move sleepable refcounted_kptr tests to syscalls X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=fcec7c66d68165b69b3cef6af913a435a25e36a1;p=thirdparty%2Flinux.git selftests/bpf: Move sleepable refcounted_kptr tests to syscalls Now that sleepable programs are always enabled on syscalls, let refcounted_kptr tests use syscalls rather than bpf_testmod_test_read, which is not sleepable with error injection disabled. The tests just check that the verifier can handle usage of RCU locks in sleepable programs and never actually attach. So, the attachment target doesn't matter (as long as it is sleepable) and with syscalls, the tests pass on kernels with disabled error injection. Signed-off-by: Viktor Malik Acked-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/8b6626eae384559855f7a0e846a16e83f25f06f6.1773055375.git.vmalik@redhat.com Signed-off-by: Alexei Starovoitov --- diff --git a/tools/testing/selftests/bpf/progs/refcounted_kptr.c b/tools/testing/selftests/bpf/progs/refcounted_kptr.c index 1aca85d86aebc..c847398837ccd 100644 --- a/tools/testing/selftests/bpf/progs/refcounted_kptr.c +++ b/tools/testing/selftests/bpf/progs/refcounted_kptr.c @@ -500,7 +500,7 @@ long rbtree_wrong_owner_remove_fail_a2(void *ctx) return 0; } -SEC("?fentry.s/bpf_testmod_test_read") +SEC("?fentry.s/" SYS_PREFIX "sys_getpgid") __success int BPF_PROG(rbtree_sleepable_rcu, struct file *file, struct kobject *kobj, @@ -534,7 +534,7 @@ err_out: return 0; } -SEC("?fentry.s/bpf_testmod_test_read") +SEC("?fentry.s/" SYS_PREFIX "sys_getpgid") __success int BPF_PROG(rbtree_sleepable_rcu_no_explicit_rcu_lock, struct file *file, struct kobject *kobj, diff --git a/tools/testing/selftests/bpf/progs/refcounted_kptr_fail.c b/tools/testing/selftests/bpf/progs/refcounted_kptr_fail.c index 836c8ab7b908c..b2808bfcec296 100644 --- a/tools/testing/selftests/bpf/progs/refcounted_kptr_fail.c +++ b/tools/testing/selftests/bpf/progs/refcounted_kptr_fail.c @@ -93,7 +93,7 @@ long rbtree_refcounted_node_ref_escapes_owning_input(void *ctx) return 0; } -SEC("?fentry.s/bpf_testmod_test_read") +SEC("?fentry.s/" SYS_PREFIX "sys_getpgid") __failure __msg("function calls are not allowed while holding a lock") int BPF_PROG(rbtree_fail_sleepable_lock_across_rcu, struct file *file, struct kobject *kobj,