OK, this seems to only happen when using exceptions/page_fault_user, exceptions/page_fault_kernel and tlb/tlb_flush together.
One can reproduce this with perf: sudo perf record -e exceptions:page_fault_user,exceptions:page_fault_kernel,tlb:tlb_flush sleep 1 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875941 Title: using perf as root locks up focal kernel To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1875941/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
