[Dovecot] Panic: IMAP: Trying to allocate 2273345672 bytes

[Timo Sirainen]

On Wed, 2008-09-10 at 12:20 +0100, Mark Zealey wrote:
> 2008-09-10T11:56:07+01:00 mail8 dovecot: Panic: IMAP(xxx): Trying to
> allocate 2273345672 bytes
> 2008-09-10T11:56:07+01:00 mail8 dovecot: IMAP(xxx): Raw backtrace:
> /usr/libexec/dovecot/imap [0x80d0310] -> /usr/libexec/dovecot/imap
> [0x80d036a] -> /usr/libexec/dovecot/imap [0x80cfc2c] ->
> /usr/libexec/dovecot/imap [0x80d966c] -> /usr/libexec/dovecot/imap
> [0x80ce750] -> /usr/libexec/dovecot/imap(buffer_create_dynamic+0x30)
> [0x80ce800] ->
> /usr/libexec/dovecot/imap(mail_index_sync_ext_intro+0x4d5) [0x80c0145]

This should help: http://hg.dovecot.org/dovecot-1.1/rev/aa01f9077178

But as for why the transaction log file contained such a broken record
in the first place:

> About our setup: These are on an nfs-mounted file system. It's shared
> between two computers and connections are randomly redirected to either
> box; so potentially it could be an nfs type corruption issue. Timo, I'll
> send you a tarball of the dovecot* files off-list

Sounds like it could be because of NFS caching issues. You've set
mail_nfs_index=yes, right? What OS? Linux should be OK, but FreeBSD has
some issues.

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