Hi, After investigating several gate failures and thanks to logstash, I found out that Libvirtd often crashes badly on Ubuntu Xenial. I know of 3 distinct crashes, with the following fingerprints in syslog.txt * libvirtd: malloc.c:3720: _int_malloc: Assertion `(unsigned long) (size) >= (unsigned long) (nb)' failed. 13 hits in the last 7 days. Somewhat reported in https://bugs.launchpad.net/tempest/+bug/1646779 * traps: libvirtd[14731] general protection ip:7f2249691c4e sp:7ffd2c223d70 error:0 in libc-2.23.so[7f2249610000+1bf000] 92 hits in the last 7 days. Somewhat reported in https://bugs.launchpad.net/tempest/+bug/1646779 * *** Error in `/usr/sbin/libvirtd': malloc(): memory corruption: 0x000055d6a8375ca0 *** 100 hits in the last 7 days. Somewhat reported in https://bugs.launchpad.net/nova/+bug/1643911 Now, depending on how quick systemd detects these crashes and restart libvirtd, not all of these hits lead to a job failure. My C language skill is very low, and this is too low level for me to track. But there's definitively something wrong that should be looked after here. If anyone has some free cycles, that would be interesting to track. Cheers, Jordan -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.openstack.org/pipermail/openstack-dev/attachments/20170201/408bedfb/attachment.html>