From: Song Liu Date: Thu, 26 May 2022 19:16:08 +0000 (-0700) Subject: selftests/bpf: fix stacktrace_build_id with missing kprobe/urandom_read X-Git-Tag: baikal/aarch64/sdk6.1~3836^2~37^2~1 X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=ef9e3405725366d1f8f4bc358cc7f6f7a632f679;p=kernel.git 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: cfb417ca17ef ("random: convert to using fops->read_iter()") Reported-by: Mykola Lysenko Signed-off-by: Song Liu Acked-by: David Vernet Link: https://lore.kernel.org/r/20220526191608.2364049-1-song@kernel.org Signed-off-by: Alexei Starovoitov --- 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 6c62bfb8bb6fa..0c4426592a260 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)