Some notes from John: > My belief is that this doesn’t occur on Azure because of the following > upstream commit (which is included in focal:linux-azure): e39acc37db34: “clocksource: hyper-v: Provide noinstr sched_clock()” > > It appears that this prevents some functions from allowing tracers to be > added. I suspect those tracers were causing the deadlock, which this commit > now works around the lock.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1882669 Title: Focal Azure AMD64 instances crash with ftrace/test.d/00basic/basic2.tc in ubuntu_kselftests_ftrace and ubuntu_ftrace_smoke_test To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1882669/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
