Quoting Bron Gondwana <brong@xxxxxxxxxxx>:
On Tue, Jan 15, 2008 at 09:18:27AM +0100, Michael Menge wrote:Hi, I found some segmentation faults of my "imapd -s" and "pop3d -s""proceses in my logs.Has anybody seen this before. I'm running cyrus 2.3.8 on an SLES10 x86_64. Jan 14 09:37:44 mailserv08 kernel: imapd[1898]: segfault at 00002b9042669978 rip 00000000004805d4 rsp 00007fffdf6b51c0 error 4 Jan 14 10:11:44 mailserv08 kernel: imapd[32213]: segfault at 00002b1c29b16978 rip 00000000004805d4 rsp 00007ffff81f9d00 error 4 Jan 14 10:13:47 mailserv08 kernel: imapd[30415]: segfault at 00002b6440346978 rip 00000000004805d4 rsp 00007fffe19d4360 error 4 Jan 14 10:17:51 mailserv08 kernel: imapd[30420]: segfault at 00002adb7dd67978 rip 00000000004805d4 rsp 00007fffa3fb3ab0 error 4 Jan 14 10:53:18 mailserv08 kernel: imapd[2072]: segfault at 00002ae8ce23e978 rip 00000000004805d4 rsp 00007fff5368d190 error 4 Jan 14 11:07:14 mailserv08 kernel: pop3d[3402]: segfault at 00002b29a2f6a978 rip 000000000043fe4c rsp 00007fff7e8fc510 error 4 Jan 14 11:33:41 mailserv08 kernel: imapd[3797]: segfault at 00002b5a2e971978 rip 00000000004805d4 rsp 00007ffff33aaeb0 error 4 Jan 14 12:00:20 mailserv08 kernel: pop3d[5015]: segfault at 00002ad8925f3978 rip 000000000043fe4c rsp 00007fff8f72b340 error 4 The last corresponding entry in cyrus logs is always "accepted connection" Jan 14 11:33:41 mailserv08 imaps[3797]: accepted connection Jan 14 12:00:20 mailserv08 pop3s[5015]: accepted connectionSounds like a corrupted mailbox to me - there's heaps of stuff where cyrus mmaps a file and blindly goes adding offsets read from it to the mmap base and accessing the memory there. Recipe for segfaults if I ever saw one. Do you know which user is logging in when this happens? They're rare enough that I assume it's not every user on the box! Bron.
Syslog is logging Cyrus at debug level, and the last line for that process is"accepted connection". Normaly this line is followd by a STARTTLS line and a LOGIN line. proc/pid shows the host they are connected with. These IPs are different for most processes and i see other succesfull logins from these hosts.
So i don't think it's a corrupt mailbox. Maybe the tls_sessions.db is corrupt. Is there a way to check a skiplist if the file is corrupted? -------------------------------------------------------------------------------- M.Menge Tel.: (49) 7071/29-70316 Universitaet Tuebingen Fax.: (49) 7071/29-5912Zentrum fuer Datenverarbeitung mail: michael.menge@xxxxxxxxxxxxxxxxxxxx
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