Comment 36 for bug 1997375

One of the effected servers running bind9 package version 9.16.1-0ubuntu2.12 had a slightly different abort today (rather than the usual segmentation fault):

Feb 6 11:30:25 ff0148 named[2651528]: netmgr.c:687: REQUIRE((__builtin_expect(!!((sock) != ((void *)0)), 1) && __builtin_expect(!!(((const
 isc__magic_t *)(sock))->magic == ((('N') << 24 | ('M') << 16 | ('S') << 8 | ('K')))), 1))) failed, back trace
Feb 6 11:30:25 ff0148 named[2651528]: #0 0x55c71806be43 in ??
Feb 6 11:30:25 ff0148 named[2651528]: #1 0x7fb6e2b74ac0 in ??
Feb 6 11:30:25 ff0148 named[2651528]: #2 0x7fb6e2b8c78a in ??
Feb 6 11:30:25 ff0148 named[2651528]: #3 0x7fb6e2b8d240 in ??
Feb 6 11:30:25 ff0148 named[2651528]: #4 0x7fb6e2b9118b in ??
Feb 6 11:30:25 ff0148 named[2651528]: #5 0x7fb6e2e5a707 in ??
Feb 6 11:30:25 ff0148 named[2651528]: #6 0x7fb6e2e5bfe9 in ??
Feb 6 11:30:25 ff0148 named[2651528]: #7 0x7fb6e2e6a9b0 in ??
Feb 6 11:30:25 ff0148 named[2651528]: #8 0x7fb6e2e729a7 in ??
Feb 6 11:30:25 ff0148 named[2651528]: #9 0x7fb6e2e79de6 in ??
Feb 6 11:30:25 ff0148 named[2651528]: #10 0x7fb6e2e75936 in ??
Feb 6 11:30:25 ff0148 named[2651528]: #11 0x7fb6e2e7b4c6 in ??
Feb 6 11:30:25 ff0148 named[2651528]: #12 0x7fb6e2b9bfa1 in ??
Feb 6 11:30:25 ff0148 named[2651528]: #13 0x7fb6e2663609 in ??
Feb 6 11:30:25 ff0148 named[2651528]: #14 0x7fb6e2582133 in ??
Feb 6 11:30:25 ff0148 named[2651528]: exiting (due to assertion failure)
Feb 6 11:30:26 ff0148 whoopsie-upload-all[3207865]: /var/crash/_usr_sbin_named.107.crash already marked for upload, skipping
Feb 6 11:30:29 ff0148 whoopsie-upload-all[3207884]: /var/crash/_usr_sbin_named.107.crash already marked for upload, skipping
Feb 6 11:30:34 ff0148 systemd[1]: named.service: Main process exited, code=killed, status=6/ABRT
Feb 6 11:30:34 ff0148 systemd[1]: named.service: Failed with result 'signal'.
Feb 6 11:30:35 ff0148 systemd[1]: named.service: Scheduled restart job, restart counter is at 8.