[Dovecot] Panic: file mailbox-list-fs.c

[Burckhard Schmidt]

On 21.09.2010 17:48, Timo Sirainen wrote:
> On Tue, 2010-09-21 at 16:10 +0200, Burckhard Schmidt wrote:
>
>> A user "produces" now this error:
>>    imap(userx): Panic: file mailbox-list-fs.c: line 150
>> (fs_list_get_path): assertion failed:
>>    (mailbox_list_is_valid_pattern(_list, name))
>
> There are lots of ways how the code could get here.
>
>> Error: Raw backtrace: follows.
>
> This could have been useful in pointing out where it's being called. A

imap(userx): Error: Raw backtrace: 0xff1574a8 -> 0xff1560e8 -> 
0xff294fa4 -> 0xff23843c -> 0xfeca53bc -> 0xfeca5594 -> 0xfeca3ee4 -> 
0xfecaf7a0 -> 0xfecb0450 -> 0xfecb06a4 -> 0xff2394e8 -> 0x1b644 -> 
0x1ccb8 -> 0x1d638 -> 0x1d788 -> 0x23d60 -> 0x24070 -> 0x24204 -> 
0x242a8 -> 0x244ac -> 0xff16d3c4 -> 0xff16bffc -> 0xff14b2e0 -> 0x343e0 
-> 0x15b30
Sep 22 14:00:38 master: Error: service(imap): child 503 killed with 
signal 6 (core not dumped - set service imap { drop_priv_before_exec=yes })


We have found the reason which concerns dsync and dovecot I think.

1.
There was a mbox folder "tmp": ~user/mail/tmp

2.
This has been converted by dsync to maildir with following results:
The folder "tmp" has been converted by dsync to "mail_tmp" and it lies 
directly under  ~user/maildir containing cur/new/tmp as usual.

But the file "subscriptions" generated by dsync contains still mail/tmp.

3.
At this point dovecot crashes when the user accesses to his mailbox. We 
tried imap list/lsub commands too. There was a difference if we used
1 lsub "mail" "%/%" it  crashes,
1 lsub "mail/" "%/%" it does not.

4. I renamed the entry inside subscriptions from mail/tmp into mail_tmp 
and it works again.

-- 
Mit freundlichen Gruessen --- Burckhard Schmidt