Hi Steve,

Steve,

I think 19152 of vchkpw[19152] is the process id. Can you look through the log file in /var/log/qmail/smtp, /var/log/qmail/send, and /var/log/qmail/submission for such a process?

Also look in the dovecot log for error at the specified time.

Eric

On 6/10/2016 10:14 AM, Steve Linberg wrote:

On Jun 10, 2016, at 11:27 AM, Eric <[email protected]
<mailto:[email protected]>> wrote:

I guess I'm confused. Which log file are you getting segfault in?

Jeez, sorry, I referenced it incorrectly before. They’re in
/var/log/messages, NOT /var/log/maillog. :(

/var/log/messages:Jun 10 09:51:15 xxx kernel: vchkpw[19152]: segfault at
0 ip 00007f386f954ad6 sp 00007ffea3855d68 error 4 in
libc-2.17.so[7f386f822000+1b7000]

Again, though, for what it’s worth, I grepped the date/time of the
segfault in all of the other files in /var/log and didn’t find any
matches. I know the qmail logfiles timestamp in a different format until
piped through tai64nlocal, but I really looked for any other time-based
clues in all of the other system logfiles and couldn’t find anything
happening at or near the same time. Very puzzling.

So I’m still not clear whether there’s any other way to find out what
process invoked vchkpw in the above instance (they’re all like that,
always in vchkpw). I don’t know for sure if I’m softlimiting the right
process in qmail submission, or if it could be something else, or how to
tell.

--
Steve Linberg, Chief Goblin
Silicon Goblin Technologies
http://silicongoblin.com
Be kind.  Remember, everyone you meet is fighting a hard battle.


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