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selftests/bpf: fix stacktrace_build_id with missing kprobe/urandom_read
[ Upstream commit59ed76fe2f
] 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:1b388e7765
("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> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -39,7 +39,7 @@ struct {
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__type(value, stack_trace_t);
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} stack_amap SEC(".maps");
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SEC("kprobe/urandom_read")
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SEC("kprobe/urandom_read_iter")
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int oncpu(struct pt_regs *args)
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{
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__u32 max_len = sizeof(struct bpf_stack_build_id)
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