On Tue, 2009-10-27 at 09:48 +0200, Nikita Koshikov wrote:
I have one user, which have a lot of folders (not it is 414 without INBOX). When he tries to create one more folder with random name - the folder successfully created, but LIST command invokes out of memory to imap process.
From the logs: Oct 26 15:26:38 IMAP(gozhda.a@domain.com): Panic: data stack: Out of memory when allocating 268435472 bytes Oct 26 15:26:38 IMAP(gozhda.a@domain.com): Error: *** glibc detected *** imap: double free or corruption (!prev): 0x0812ba00 ***
This is bad. Can you reproduce it easily? Could you cause this crash under valgrind? For example:
protocol imap { mail_executable = /usr/local/bin/imap.sh }
and /usr/local/bin/imap.sh:
#!/bin/sh
if [ $USER = "gozhda.a@domain.com" ]; then exec /usr/bin/valgrind /usr/libexec/dovecot/imap else exec /usr/libexec/dovecot/imap fi
Valgrind will hopefully then log to Dovecot's log what exactly is the problem.
It's anyway related to one of your virtual maiboxes. I suppose you have a virtual mailbox that includes messages from all real mailboxes?