This issue can be triggered by running the libhugetlbfs test suite: AUTOTEST_PATH=/home/ubuntu/autotest sudo -E autotest/client/autotest- local --verbose autotest/client/tests/libhugetlbfs/control
The brk_near_huge test seems to be the cause: 07:31:49 DEBUG| [stdout] misaligned_offset (1024K: 64): PASS (inconclusive) 07:31:49 DEBUG| [stdout] truncate_above_4GB (1024K: 64): PASS 07:31:49 ERROR| [stderr] brk_near_huge: malloc.c:2406: sysmalloc: Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long) old_end & (pagesize - 1)) == 0)' failed. 07:31:49 DEBUG| [stdout] brk_near_huge (1024K: 64): The test will hung here. But the system is still alive. The dmesg will be cleared. When I try to reboot the system, it will hang with: [ 621.223467] systemd-shutdow: 39 output lines suppressed due to ratelimiting [ 621.230541] systemd-shutdown[1]: Sending SIGTERM to remaining processes... Full log can be found here: http://pastebin.ubuntu.com/25423167/ I need to use virsh reset to get it back to normal. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1712724 Title: s390 zKVM complains about "illegal operation" to s390/mm/pgalloc.c To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1712724/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
