[Dovecot] Panic: file mail-index-transaction-export.c: line 203 (log_append_ext_hdr_update): assertion failed: (u32.offset + u32.size <= ext_hdr_size)

[Andy Dills]

Hi there, 

We recently upgraded to 2.2.12 (the current version in FreeBSD's port
tree), and are seeing these errors in our logs (not super frequently,
but it happens): 

May 30 13:20:57 mail1 kernel: pid 15752 (imap), uid 1005: exited on
signal 6
May 30 13:20:57 mail1 dovecot: imap(xxx): Fatal: master: service(imap):
child 15752 killed with signal 6 (core not dumped - set service imap {
drop_priv_before_exec=yes }) 

I tried manually upgrading to 2.2.13, on the off chance that was fixed,
but I couldn't get the new pigeonhole (0.4.3) to compile once I did
(perhaps why the FreeBSD port maintainer hasn't updated yet?). 

Suggestions? Right now we just check every couple of hours for affected
users, and then delete all of the dovecot files for the affected user,
which ends the error. 

Thanks,
Andy 

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Andy Dills
Xecunet, Inc.
www.xecu.net
301-682-9972
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