master: service(imap): child xxxx killed with signal 11

[WJCarpenter]

Thank you, Lukas Matasovsky, for isolating this. I've had dovecot pinned 
to the .16 version since I started getting that crash in the .17 
version. But I've been too slack to do more than scan the mailing list 
for fixes. Your investigation provided the solution that also worked for 
me. Once again, my laziness pays off. Thanks again.

On 1/2/22 6:07 AM, Lukas Matasovsky wrote:
> I have isolated the issue: after removing fts_squat dovecot seems to 
> be back to normal.
> See also: https://doc.dovecot.org/configuration_manual/fts/squat/ 
> <https://doc.dovecot.org/configuration_manual/fts/squat/>