On Tue, Jan 19, 2021 at 09:28:58AM +0100, Simon Josefsson wrote: > Hi. I noticed the following in my log recently. Any ideas? > > Jan 6 14:55:54 uggla kernel: [145284.855936] imap[18530]: segfault at 8 ip > 000055c38b20f97c sp 00007ffe4baaaa40 error 4 in imap[55c38b1f7000+24000] > Jan 6 14:55:54 uggla kernel: [145284.855945] Code: 5d 41 5c 41 5d e9 2b ca > fe ff 0f 1f 40 00 45 89 ec 48 89 df 48 39 eb 75 bd 48 8b 45 00 48 8d 35 da f4 > 00 00 41 bc ff ff ff ff <48> 8b 78 08 e8 8b 77 ff ff 48 83 c4 08 44 89 e0 5b > 5d 41 5c 41 5d > Jan 6 14:55:54 uggla dovecot: imap(simon)<18530><7bj6fTy4vsof0Co6>: Fatal: > master: service(imap): child 18530 killed with signal 11 (core dumps disabled > - https://dovecot.org/bugreport.html#coredumps) > > The 1:2.3.4.1-5+deb10u5 packages were installed on 2021-01-04: > > 2021-01-04 22:34:01 status installed dovecot-imapd:amd64 1:2.3.4.1-5+deb10u5 > > The machine was restarted minutes after that, so on 2021-01-06 (segfault > log output above) it should have be running then-current packages. > > I'm not able to use ALLOW_COREDUMPS=1 to make sure I get core dumps in > the future, but I'll report that separately.
It seems from #980444 that you've got coredumps working. Can you provide a stack trace for this? noah
