Attaching the qemu log for a crashed VM under the noble limit using the reproducer above with 255 vCPUs.
char device redirected to /dev/pts/5 (label charserial0) failed to set up stack guard page: Cannot allocate memory 2026-10-23 16:59:24.913+0000: shutting down, reason=crashed ubuntu@hoodin:~$ cat /proc/sys/vm/max_map_count 1048576 ** Attachment added: "qemu_crash_noble_limit.txt" https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/2168803/+attachment/6011975/+files/qemu_crash_noble_limit.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2168803 Title: QEMU 8.2.2 guests crash by exhausting vm.max_map_count with coroutines To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/2168803/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
