abrt reported "imap killed by SIGBUS"

Hongying Liu hongyliu at redhat.com
Mon Apr 10 12:26:41 EEST 2017 

Sorry for late response.

This issue occurs ran randomly. So I don't know how to run valgrind command.

2017-04-10 17:14 GMT+08:00 Hongying Liu <hongyliu at redhat.com>:

> Sorry for late response.
>
> This issue occurs ran randomly. So I don't know how to run valgrind
> command.
>
> I upload the coredump.
>
> The version of dovecot is dovecot-2.2.10-7.el7.x86_64.
>
> 2017-04-07 14:07 GMT+08:00 Aki Tuomi <aki.tuomi at dovecot.fi>:
>
>> Please keep responses on list.
>>
>> Can you please run valgrind on this, as it appears to be some sort of
>> memory corruption issue.
>>
>> Aki
>>
>> > On April 7, 2017 at 5:37 AM Hongying Liu <hongyliu at redhat.com> wrote:
>> >
>> >
>> > Thanks for your response.
>> >
>> > (gdb) p cache
>> > $1 = (struct mail_cache *) 0x7fc4a811a320
>> > (gdb) p cache->hdr
>> > $2 = (const struct mail_cache_header *) 0x7fc4a6ddb000
>> > (gdb) p cache->hdr->file_seq
>> > Cannot access memory at address 0x7fc4a6ddb008   <----
>> > (gdb) p reset_id
>> > $3 = 1488892251
>> >
>> >
>> > 2017-04-06 19:34 GMT+08:00 Aki Tuomi <aki.tuomi at dovecot.fi>:
>> >
>> > > 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
>> > >
>> > >
>>
>
>

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