Hello, Also affects x86_64 (KVM guest, 4 vCPUs).
Counting sys_enter_open+openat (tracepoint) against kprobe:do_sys_openat2 over the same window: - 7.0.0-34-generic: ratio 1.000, fires on all CPUs - 7.0.0-38-generic: ratio ~0.20, fires on CPU 0 only Opening an extra perf event on another CPU makes the program fire there too, which is consistent with the hlist_empty(head) early return. The 7.0.0-39.39 -proposed changelog has no revert, so -39 would ship with the same bug. Thanks. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2170225 Title: linux 7.0.0-38: BPF programs on syscalls:sys_enter_* tracepoints with user-pointer args only run on one CPU To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2170225/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
