[Dovecot] mailbox count folders issues

[Nikita Koshikov]

On Wed, 18 Nov 2009 11:55:40 -0500
Timo Sirainen <tss at iki.fi> wrote:

> On Wed, 2009-11-18 at 10:04 +0200, Nikita Koshikov wrote:
> 
> > #10 0x080d03d2 in buffer_write (_buf=0xb7e1a670, pos=67100436, data=0xbb53ae0, data_size=32824) at buffer.c:63
> > No locals.
> > #11 0x080d04f6 in buffer_append (buf=0xb7e1a670, data=0xbb53ae0, data_size=32824) at buffer.c:168
> > No locals.
> > #12 0x080b54cc in mail_transaction_log_append (t=0xb205218, log_file_seq_r=0xbf8541f0, log_file_offset_r=0xbf8541e0) at mail-transaction-log-append.c:333
> 
> Interesting. If you still have the core and do:
> 
> fr 12
> p *hdr
> p offset
> p hdrs[ext_id]
> 
With old core(not sure if it's exactly the same):

(gdb) fr 12
#12 0x080b54cc in mail_transaction_log_append (t=0xb205218, log_file_seq_r=0xbf8541f0, log_file_offset_r=0xbf8541e0) at mail-transaction-log-append.c:333
warning: Source file is more recent than executable.
333                     } else {
(gdb) p *hdr
No symbol "hdr" in current context.
(gdb) p offset
No symbol "offset" in current context.
(gdb) p hdrs[ext_id]
No symbol "hdrs" in current context.

> What does it print? Also could you try what it logs with the attached patch?
> 
Here is logs, from new crash:

Nov 19 08:57:34 IMAP(alice at domain.com): Warning: header rewrite: size=32824
Nov 19 08:57:34 IMAP(alice at domain.com): Warning: mail_index_update_header_ext: ext_id=2 offset=0 size=32824
Nov 19 08:57:34 IMAP(alice at domain.com): Warning: log_append_ext_hdr_update: size=65536
Nov 19 08:57:35 IMAP(alice at domain.com): Panic: data stack: Out of memory when allocating 268435472 bytes
Nov 19 08:57:35 IMAP(alice at agromat.ua): Error: Raw backtrace: imap [0x80d23e1] -> imap [0x80d2452] -> imap [0x80d1db9] -> imap [0x80d0b8d] -> imap [0x80d1007] -> imap [0x80db988] -> imap [0x80cff3a] -> imap(buffer_write+0xd2) [0x80d0432] -> imap(buffer_append+0x26) [0x80d0556] -> imap(mail_transaction_log_append+0x624) [0x80b5504] -> imap [0x80aa059] -> imap(mail_index_sync_commit+0xa5) [0x80ad555] -> /usr/lib/dovecot/imap/lib20_virtual_plugin.so [0xb7e6cc06] -> /usr/lib/dovecot/imap/lib20_virtual_plugin.so(virtual_storage_sync_init+0x71c) [0xb7e6f71c] -> imap(mailbox_sync+0x35) [0x8097595] -> imap(cmd_select_full+0x3d8) [0x8062fb8] -> imap(cmd_select+0x19) [0x80636f9] -> imap [0x806597c] -> imap [0x8065a23] -> imap(client_handle_input+0x2d) [0x8065b7d] -> imap(client_input+0x5f) [0x80664bf] -> imap(io_loop_handler_run+0xe0) [0x80da540] -> imap(io_loop_run+0x20) [0x80d99e0] -> imap(main+0x5dc) [0x806ee4c] -> /lib/libc.so.6(__libc_start_main+0xe5) [0xb7eba725] -> imap [0x805e281]
Nov 19 08:57:36 dovecot: Error: child 16124 (imap) killed with signal 6 (core dumped)

From new core file:
(gdb) fr 12
#12 0x080b5504 in mail_transaction_log_append (t=0xb205218, log_file_seq_r=0xbf9162b0, log_file_offset_r=0xbf9162a0) at mail-transaction-log-append.c:337
337     mail-transaction-log-append.c: No such file or directory.
        in mail-transaction-log-append.c
(gdb) p *hdr
No symbol "hdr" in current context.
(gdb) p offset
No symbol "offset" in current context.
(gdb) p hdrs[ext_id]
No symbol "hdrs" in current context.

And attached current gdb-trace.
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