Bind 9.16.1 crash on Ubuntu

[Marc Deslauriers]

Hi,

On 2022-12-08 12:22, Ben Bridges wrote:
> Greetings.
> 
> Yesterday morning one of our BIND daemons crashed.  The following messages were 
> logged in named.run at the time:
> 
> 07-Dec-2022 11:58:37.097 general: critical: 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
> 
> 07-Dec-2022 11:58:37.097 general: critical: #0 0x56508c798e43 in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #1 0x7fa72e881ac0 in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #2 0x7fa72e89978a in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #3 0x7fa72e89a240 in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #4 0x7fa72e89e18b in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #5 0x7fa72eb67707 in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #6 0x7fa72eb68fe9 in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #7 0x7fa72eb779b0 in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #8 0x7fa72eb7f9a7 in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #9 0x7fa72eb8116e in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #10 0x7fa72eb816cd in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #11 0x7fa72eb823c9 in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #12 0x7fa72eb884c6 in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #13 0x7fa72e8a8fa1 in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #14 0x7fa72e370609 in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: #15 0x7fa72e28f133 in ??
> 
> 07-Dec-2022 11:58:37.097 general: critical: exiting (due to assertion failure)
> 
> This is bind9 1:9.16.1-0ubuntu2.11 running on Ubuntu 20.04.5 LTS (fully 
> patched).  Has this issue been seen before?  If so, has it been fixed, or is it 
> being fixed?  Is this the right forum for this posting?
> 
> More generally … to what extent do you update the Ubuntu bind9 package?  Is it 
> literally the 9.16.1 base source code (in focal) with no updates other than to 
> patch the CVE security vulnerabilities?  Or are there other patches in it as 
> well? For a given Ubuntu LTS version (such as focal), do you ever “start over” 
> with the newest minor release of that branch of BIND (9.16 for focal, 9.18 for 
> jammy)?  Or do you just continue patching the initial release of the branch?  Is 
> there a specific version of 9.16 that you can say 1:9.16.1-0ubuntu2.11 is 
> equivalent to in terms of patches (both security and non-security)?  Do you 
> recommend for or against Ubuntu users using the BIND packages in ISC’s PPA 
> repository instead of the bind9 package in the Ubuntu repository?
> 
> Thanks,
> 
> Ben Bridges
> 
> 
> City Utilities
> 
> SpringNet <http://www.springnet.net>
> 
> Sales 417.575.7000 | Support 417.874.8000 | springnet.net <http://www.springnet.net>
> 
> 

Please file a bug against bind9. It looks like that crash is related to this bug:

https://gitlab.isc.org/isc-projects/bind9/-/issues/1981

which ultimately was fixed by this merge request:

https://gitlab.isc.org/isc-projects/bind9/-/merge_requests/3721/commits

Thanks,

Marc.