abrt reported "imap killed by SIGBUS"

[Aki Tuomi]

Hi!

Responses in middle.

Aki

On 06.04.2017 06:05, Hongying Liu wrote:
> Hi sbr-services,
>
> Could you give me some idea?
>
> ### abrt reported the error as below.
> [root at cupop4 log]# abrt-cli list --since 1488267244 id
> ad716dbfd3a68bbe0f055e32ebfe562f4f75df43
> reason:         imap killed by SIGBUS
> time:           Sun Mar 19  2017 10:58:27 AM JST
> cmdline:        dovecot/imap
> package:        dovecot-2.2.10-7.el7
> uid:            80180 (acaa2325)
> count:          2
> Directory:      /var/spool/abrt/ccpp-2017-03-19-10:58:27-4904
> 'abrt-cli report を実行する/var/spool/abrt/ccpp-2017-03-19-10:58:27-4904'
>
>
> ### /var/log/messages
> Mar 19 10:58:27 cupop4 abrt-hook-ccpp: Process 4904 (imap) of user 80180
> killed by SIGBUS - dumping core
>
> And, there are lots of ldap error in /var/log/messages. Dovecot uses the
> ldap as userdb and passwddb.
> Is the ldap error related to imap crash?
>
> Mar 19 10:58:21 cupop4 nslcd[1534]: [a378de] <group/member="postfix">
> ldap_result() failed: Invalid DN syntax: Invalid DN

This looks like an invalid DN syntax.

>
> ### /var/log/dovecot
>
> Mar 19 10:58:27 cupop4 dovecot: imap(acaa2325): Fatal: master:
> service(imap): child 4904 killed with signal 7 (core dumped)
>
Can you do p cache, p cache->hdr, p cache->hdr->file_seq and p reset_id

> ### gdb
>
> Core was generated by `dovecot/imap'.
> Program terminated with signal 7, Bus error.
> #0  0x00007fc4a69f293e in mail_cache_lookup_offset (cache=0x7fc4a811a320,
> view=<optimized out>, seq=<optimized out>, offset_r=offset_r at entry
> =0x7ffe23a98900)
>     at mail-cache-lookup.c:95
> 95 while (cache->hdr->file_seq != reset_id) {
> (gdb) bt
> #0  0x00007fc4a69f293e in mail_cache_lookup_offset (cache=0x7fc4a811a320,
> view=<optimized out>, seq=<optimized out>, offset_r=offset_r at entry
> =0x7ffe23a98900)
>     at mail-cache-lookup.c:95
> #1  0x00007fc4a69f2afa in mail_cache_lookup_iter_init
> (view=view at entry=0x7fc4a81332b0,
> seq=<optimized out>, ctx_r=ctx_r at entry=0x7ffe23a988e0)
>     at mail-cache-lookup.c:154
> #2  0x00007fc4a69f2f8f in mail_cache_seq (seq=<optimized out>,
> view=0x7fc4a81332b0) at mail-cache-lookup.c:322
> #3  mail_cache_field_exists (view=view at entry=0x7fc4a81332b0, seq=seq at entry=760,
> field=field at entry=4) at mail-cache-lookup.c:352
> #4  0x00007fc4a69f3151 in mail_cache_lookup_field (view=0x7fc4a81332b0,
> dest_buf=dest_buf at entry=0x7ffe23a98a00, seq=760, field_idx=field_idx at entry
> =4)
>     at mail-cache-lookup.c:413
> #5  0x00007fc4a69d9439 in index_mail_cache_lookup_field
> (mail=mail at entry=0x7fc4a8128cd0,
> buf=buf at entry=0x7ffe23a98a00, field_idx=field_idx at entry=4)
>     at index-mail.c:68
> #6  0x00007fc4a69d94a7 in index_mail_get_fixed_field (mail=0x7fc4a8128cd0,
> field=<optimized out>, data=<optimized out>, data_size=8) at
> index-mail.c:130
> #7  0x00007fc4a69d9fed in index_mail_get_cached_virtual_size
> (mail=mail at entry=0x7fc4a8128cd0, size_r=size_r at entry=0x7ffe23a98b20) at
> index-mail.c:403
> #8  0x00007fc4a6987c1b in maildir_mail_get_virtual_size
> (_mail=0x7fc4a8128cd0, size_r=0x7ffe23a98b20) at maildir-mail.c:388
> #9  0x00007fc4a69d9719 in index_mail_update_access_parts
> (mail=mail at entry=0x7fc4a8128cd0)
> at index-mail.c:1490
> #10 0x00007fc4a69dbb93 in index_mail_set_seq (_mail=0x7fc4a8128cd0,
> seq=760, saving=<optimized out>) at index-mail.c:1521
> #11 0x00007fc4a69e28cb in search_more_with_mail (mail=0x7fc4a8128cd0,
> ctx=0x7fc4a8132730) at index-search.c:1507
> #12 search_more_with_prefetching (mail_r=<optimized out>, ctx=<optimized
> out>) at index-search.c:1579
> #13 search_more (ctx=ctx at entry=0x7fc4a8132730,
> mail_r=mail_r at entry=0x7ffe23a98c20)
> at index-search.c:1650
> #14 0x00007fc4a69e2ff4 in index_storage_search_next_nonblock
> (_ctx=0x7fc4a8132730, mail_r=0x7fc4a81120d8, tryagain_r=0x7ffe23a98c87) at
> index-search.c:1674
> #15 0x00007fc4a69bc4ef in mailbox_search_next_nonblock
> (ctx=ctx at entry=0x7fc4a8132730,
> mail_r=mail_r at entry=0x7fc4a81120d8,
>     tryagain_r=tryagain_r at entry=0x7ffe23a98c87) at mail-storage.c:1787
> #16 0x00007fc4a69bc55d in mailbox_search_next (ctx=0x7fc4a8132730,
> mail_r=mail_r at entry=0x7fc4a81120d8) at mail-storage.c:1773
> #17 0x00007fc4a6e97874 in imap_fetch_more_int (ctx=ctx at entry=0x7fc4a8112078,
> cancel=false) at imap-fetch.c:479
> #18 0x00007fc4a6e98852 in imap_fetch_more (ctx=0x7fc4a8112078,
> cmd=cmd at entry=0x7fc4a8111ed0)
> at imap-fetch.c:556
> #19 0x00007fc4a6e8c17d in cmd_fetch (cmd=0x7fc4a8111ed0) at cmd-fetch.c:284
> #20 0x00007fc4a6e9601c in command_exec (cmd=cmd at entry=0x7fc4a8111ed0) at
> imap-commands.c:158
> #21 0x00007fc4a6e94f1f in client_command_input (cmd=cmd at entry=0x7fc4a8111ed0)
> at imap-client.c:780
> #22 0x00007fc4a6e95005 in client_command_input (cmd=0x7fc4a8111ed0) at
> imap-client.c:841
> #23 0x00007fc4a6e952fd in client_handle_next_command
> (remove_io_r=<synthetic pointer>, client=0x7fc4a8111530) at
> imap-client.c:879
> #24 client_handle_input (client=client at entry=0x7fc4a8111530) at
> imap-client.c:891
> #25 0x00007fc4a6e956c5 in client_input (client=0x7fc4a8111530) at
> imap-client.c:933
> #26 0x00007fc4a66e1a87 in io_loop_call_io (io=0x7fc4a811edd0) at
> ioloop.c:388
> #27 0x00007fc4a66e290f in io_loop_handler_run
> (ioloop=ioloop at entry=0x7fc4a80fc750)
> at ioloop-epoll.c:220
> #28 0x00007fc4a66e15d8 in io_loop_run (ioloop=0x7fc4a80fc750) at
> ioloop.c:412
> #29 0x00007fc4a668e9e3 in master_service_run (service=0x7fc4a80fc5e0,
> callback=callback at entry=0x7fc4a6e9ed70 <client_connected>) at
> master-service.c:571
> #30 0x00007fc4a6e89324 in main (argc=1, argv=0x7fc4a80fc390) at main.c:400
>
> Thank you.
>
> Best regards,
> Hongying Liu