Core dumps when opening an IMAP folder (Was: Re: [Dovecot] 1.0-test70)

[Tero Ripattila]

Hello Timo, I can reproduce this issue even with mmap_disable and 
mmap_no_write set to yes, please see the following back trace:

$ gdb /usr/local/libexec/dovecot/imap /tmp/imap.core
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This GDB was configured as "i386-unknown-openbsd3.6"...
Core was generated by `imap'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/libc.so.34.2...done.
Loaded symbols for /usr/lib/libc.so.34.2
Reading symbols from /usr/libexec/ld.so...done.
Loaded symbols for /usr/libexec/ld.so
#0  0x1c03d7f2 in mail_transaction_log_view_set (view=0x3c020500, 
min_file_seq=8, min_file_offset=7148, max_file_seq=8,
    max_file_offset=7148, type_mask=8) at 
mail-transaction-log-view.c:102
102             if (min_file_seq == view->log->tail->hdr.prev_file_seq 
&&
(gdb)
#0  0x1c03d7f2 in mail_transaction_log_view_set (view=0x3c020500, 
min_file_seq=8, min_file_offset=7148, max_file_seq=8,
    max_file_offset=7148, type_mask=8) at 
mail-transaction-log-view.c:102
        file = (struct mail_transaction_log_file *) 0x2b1dbec8
        first = (struct mail_transaction_log_file *) 0xb21b372
        seq = 0
        end_offset = 4324021345303134216
        ret = 3932679
#1  0x1c03a17a in view_sync_get_expunges (view=0x3c01f700, 
expunges_r=0xcfbf97d0) at mail-index-view-sync.c:105
        hdr = (const struct mail_transaction_header *) 0xe4e1c00
        src = (struct mail_transaction_expunge *) 0xff
        src_end = (struct mail_transaction_expunge *) 0x3c011020
        dest = (struct mail_transaction_expunge *) 0x0
        data = (const void *) 0x23ee00
        count = 1117130127
        ret = 8
#2  0x1c03a366 in mail_index_view_sync_begin (view=0x3c01f700, 
sync_mask=255, ctx_r=0x8) at mail-index-view-sync.c:176
        hdr = (const struct mail_index_header *) 0x3c01f804
        ctx = (struct mail_index_view_sync_ctx *) 0x1c039b4d
        map = (struct mail_index_map *) 0xff
        mask = 8
        want_mask = 0
        expunges = {buffer = 0x0, element_size = 0}
#3  0x1c02d6cd in index_mailbox_sync_init (box=0x3c01e840, flags=0, 
failed=0) at index-sync.c:150
        ctx = (struct index_mailbox_sync_context *) 0x3c011020
        sync_mask = 1006764673
#4  0x1c019b25 in maildir_storage_sync_init (box=0x3c01e840, 
flags=MAILBOX_SYNC_FLAG_FAST) at maildir-sync.c:991
        ctx = (struct maildir_sync_context *) 0x3c0139b0
        ret = 0
#5  0x1c040fc4 in mailbox_sync_init (box=0x8, 
flags=MAILBOX_SYNC_FLAG_FAST) at mail-storage.c:333
No locals.
#6  0x1c015150 in imap_sync_init (client=0x3c020000, box=0x3c01e840, 
flags=MAILBOX_SYNC_FLAG_FAST) at imap-sync.c:43
        ctx = (struct imap_sync_context *) 0x3c01d1c0
#7  0x1c01554f in cmd_sync (cmd=0x3c020040, 
flags=MAILBOX_SYNC_FLAG_FAST, tagline=0x3c00056f "OK Search 
completed.") at imap-sync.c:210
        ctx = (struct cmd_sync_context *) 0x3c0230a0
#8  0x1c00eb66 in cmd_search (cmd=0x3c020040) at cmd-search.c:102
        client = (struct client *) 0x3c020000
        sargs = (struct mail_search_arg *) 0x8
        args = (struct imap_arg *) 0x3c021048
        args_count = 8
        error = 0x0
        charset = 0x0
#9  0x1c00fa7d in cmd_uid (cmd=0x3c020040) at cmd-uid.c:19
        cmd_name = 0x3c0210f8 "SEARCH"
#10 0x1c01023b in client_handle_input (cmd=0x3c020040) at client.c:334
        client = (struct client *) 0x3c020000
#11 0x1c010369 in _client_input (context=0x3c020000) at client.c:383
        client = (struct client *) 0x3c020000
        cmd = (struct client_command_context *) 0x3c020040
#12 0x1c050a68 in io_loop_handler_run (ioloop=0x3c01d000) at 
ioloop-poll.c:184
        data = (struct ioloop_handler_data *) 0x3c0110a0
        pollfd = (struct pollfd *) 0x3c01e000
        tv = {tv_sec = 7, tv_usec = 9219}
        io = (struct io *) 0x3c0111c0
        t_id = 2
        msecs = 8
        ret = 0
        call = 1
#13 0x1c050505 in io_loop_run (ioloop=0x3c01d000) at ioloop.c:218
No locals.
#14 0x1c016d37 in main (argc=3, argv=0xcfbf9a3c, envp=0xcfbf9a4c) at 
main.c:228
No locals.
(gdb)

Any suggestions how to fix these ongoing problems?

Thanks, Tero

-- 
Tero Ripattila