[Dovecot] assertion failed (1.0-rc27)

[Steven F Siirila]

On Wed, Mar 28, 2007 at 10:24:40PM +0300, Timo Sirainen wrote:
> On 28.3.2007, at 22.13, Steven F Siirila wrote:
> 
> >Under Dovecot 1.0-rc27 on Solaris 10 we noticed this error today  
> >affecting
> >one of our users repeatedly:
> >
> >Mar 28 14:02:01 myhost dovecot: IMAP(myuser): file mbox-sync- 
> >rewrite.c: line 423 (mbox_sync_read_and_move): assertion failed:  
> >(need_space == (uoff_t)-mails[idx].space)
> 
> In rc28 I've changed this assert to something that prints more useful  
> information. This assert alone doesn't really tell anything what the  
> problem could have been.
> 
> Anyway if it happened repeatedly, it would be nice to get the  
> anonymized mbox and index files. See http://wiki.dovecot.org/ 
> MboxProblems

I have reproduced this on a test box; here is the backtrace from the core
that was generated:

#0  0xff1c16e8 in _sys_siginfolist_data () from /lib/libc.so.1
#1  0xff15ff40 in __strxfrm_std () from /lib/libc.so.1
#2  0xff140160 in getutxline () from /lib/libc.so.1
#3  0x0007b1b8 in i_internal_panic_handler (
    fmt=0x929c8 "file %s: line %d (%s): assertion failed: (%s)", 
    args=0xffbfec98) at failures.c:403
#4  0x0007ac5c in i_panic (
    format=0x929c8 "file %s: line %d (%s): assertion failed: (%s)")
    at failures.c:183
#5  0x00042cdc in mbox_sync_rewrite (sync_ctx=0xffbff3f8, mail_ctx=0x92800, 
    end_offset=13387, move_diff=40611, extra_space=4295021294, first_seq=1, 
    last_seq=163) at mbox-sync-rewrite.c:579
#6  0x0003e970 in mbox_sync_do (sync_ctx=0xffbff3f8, flags=4290769568)
    at mbox-sync.c:1332
#7  0x0003f554 in mbox_sync (mbox=0xc1c48, flags=MBOX_SYNC_UNDIRTY)
    at mbox-sync.c:1800
#8  0x0003f988 in mbox_storage_sync_init (box=0xc1c48, 
    flags=MAILBOX_SYNC_FLAG_FULL_READ) at mbox-sync.c:1869
#9  0x0006c83c in mailbox_sync_init (box=0xc1c48, 
    flags=MAILBOX_SYNC_FLAG_FULL_READ) at mail-storage.c:406
#10 0x000298a8 in imap_sync_nonselected (box=0xc1c48, 
    flags=MAILBOX_SYNC_FLAG_FULL_READ) at imap-sync.c:196
#11 0x00021154 in _cmd_select_full (cmd=0xbbd7c, readonly=false)
    at cmd-select.c:39
#12 0x000212f0 in cmd_select (cmd=0xbbd7c) at cmd-select.c:92
#13 0x00022d68 in client_handle_input (cmd=0xbbd7c) at client.c:332
#14 0x00022ce0 in client_handle_input (cmd=0xbbd7c) at client.c:389
#15 0x00022ee0 in _client_input (context=0xbbd38) at client.c:432
#16 0x0008100c in io_loop_handler_run (ioloop=0xb9530) at ioloop-poll.c:199
#17 0x000808c8 in io_loop_run (ioloop=0xb9530) at ioloop.c:323
#18 0x0002b400 in main (argc=-4195374, argv=0xaf800, envp=0xb0be4)
    at main.c:287

I still have the core, in case there is other information from gdb that
would be useful in diagnosing this.

-- 

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