On Mon, 20 Jul 2026 23:29:52 +0900 Masami Hiramatsu (Google) <[email protected]> wrote:
> On Thu, 16 Jul 2026 22:30:11 +0800 > kernel test robot <[email protected]> wrote: > > > > > > > > > Hello, > > > > in fact, we found below two test cases randomly failed upon c5c413534d, > > while > > keep succeed on parent: > > > > ========================================================================================= > > tbox_group/testcase/rootfs/kconfig/compiler/group: > > > > igk-rpl-d04/kselftests-bpf/debian-13-x86_64-20250902.cgz/x86_64-rhel-9.4-bpf/gcc-14/ftrace > > > > 22a78be4123dce81 c5c413534d40eb4c982f1794e62 > > ---------------- --------------------------- > > fail:runs %reproduction fail:runs > > | | | > > :31 52% 16:32 > > kselftests-bpf.ftrace.ftracetest-ktap._instance_event_trigger_-_test_poll_wait_on_histogram.fail > > :31 29% 9:32 > > kselftests-bpf.ftrace.ftracetest-ktap.event_trigger_-_test_poll_wait_on_histogram.fail > > > > > > > > kernel test robot noticed > > "kselftests-bpf.ftrace.ftracetest-ktap._instance_event_trigger_-_test_poll_wait_on_histogram.fail" > > on: > > > > commit: c5c413534d40eb4c982f1794e62813f926aba747 ("selftests/tracing: Have > > trigger-hist-poll.tc use sched_process_exit") > > https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master > > > > [test failed on linux-next/master 49362394dad7df66c274c867a271394c10ca2bb8] > > Hmm, this seems like a scheduler (event) behavior is different from what > the test expected. > > Steve, I think we should use another deterministic events. I've sent a fix. https://lore.kernel.org/all/178459323652.354837.10711230683477156733.stgit@devnote2/ But this drops 2 checkpoints. I think we need to use another deterministic event, like trace_marker (but trace_marker does not support histogram trigger) Thanks, > > Thank you, > > -- > Masami Hiramatsu (Google) <[email protected]> -- Masami Hiramatsu (Google) <[email protected]>
