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authorSong Liu2022-05-26 12:16:08 -0700
committerAlexei Starovoitov2022-05-27 07:57:25 -0700
commit59ed76fe2f981bccde37bdddb465f260a96a2404 (patch)
treec09b562d02caba4289f60d8e4132735ec56c81d5 /tools/testing
parent2c262b21de6dc93ac4d8c7a4cea0da4226b451fb (diff)
selftests/bpf: fix stacktrace_build_id with missing kprobe/urandom_read
Kernel function urandom_read is replaced with urandom_read_iter. Therefore, kprobe on urandom_read is not working any more: [root@eth50-1 bpf]# ./test_progs -n 161 test_stacktrace_build_id:PASS:skel_open_and_load 0 nsec libbpf: kprobe perf_event_open() failed: No such file or directory libbpf: prog 'oncpu': failed to create kprobe 'urandom_read+0x0' \ perf event: No such file or directory libbpf: prog 'oncpu': failed to auto-attach: -2 test_stacktrace_build_id:FAIL:attach_tp err -2 161 stacktrace_build_id:FAIL Fix this by replacing urandom_read with urandom_read_iter in the test. Fixes: 1b388e7765f2 ("random: convert to using fops->read_iter()") Reported-by: Mykola Lysenko <mykolal@fb.com> Signed-off-by: Song Liu <song@kernel.org> Acked-by: David Vernet <void@manifault.com> Link: https://lore.kernel.org/r/20220526191608.2364049-1-song@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing')
-rw-r--r--tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c b/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
index 6c62bfb8bb6f..0c4426592a26 100644
--- a/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
+++ b/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
@@ -39,7 +39,7 @@ struct {
__type(value, stack_trace_t);
} stack_amap SEC(".maps");
-SEC("kprobe/urandom_read")
+SEC("kprobe/urandom_read_iter")
int oncpu(struct pt_regs *args)
{
__u32 max_len = sizeof(struct bpf_stack_build_id)