And one more core-dump in imap:str.c str_append(cstr = NULL)

[Peter Eriksson]

Dovecot 2.2.20
Solaris 10 / x86
Maildir

q


(dbx) where
  [1] strlen(0x0, 0x0, 0x491baa, 0x0, 0x4d1ed0, 0x4d1ed0), at 0xfffffd7ffeaf6dd0 
=>[2] str_append(str = 0x4a9120, cstr = (nil)), line 96 in "str.c"
  [3] client_get_commands_status(client = 0x4d16c0), line 282 in "imap-client.c"
  [4] client_log_disconnect(client = 0x4d16c0, reason = 0xfffffd7ffee24d80 "Connection closed"), line 322 in "imap-client.c"
  [5] client_default_destroy(client = 0x4d16c0, reason = (nil)), line 336 in "imap-client.c"
  [6] client_destroy(client = 0x4d16c0, reason = (nil)), line 263 in "imap-client.c"
  [7] client_input(client = 0x4d16c0), line 1099 in "imap-client.c"
  [8] io_loop_call_io(io = 0x5073b0), line 559 in "ioloop.c"
  [9] io_loop_handler_run_internal(ioloop = 0x4b2580), line 211 in "ioloop-poll.c"
  [10] io_loop_handler_run(ioloop = 0x4b2580), line 607 in "ioloop.c"
  [11] io_loop_run(ioloop = 0x4b2580), line 583 in "ioloop.c"
  [12] master_service_run(service = 0x4b2450, callback = 0x482690 = &`imap`main.c`client_connected(struct master_service_connection *conn)), line 640 in "master-service.c"
  [13] main(argc = 1, argv = 0xfffffd7fffdffcb8), line 442 in "main.c"
(dbx) frame 3
Current function is client_get_commands_status
  282                   str_append(str, cmd->name);

  
(dbx) print *cmd
*cmd = {
    prev                    = (nil)
    next                    = (nil)
    client                  = 0x4d16c0
    pool                    = 0x4d1eb0
    tag                     = (nil)
    name                    = (nil)
    args                    = (nil)
    cmd_flags               = <unknown enum member 0>
    func                    = (nil)
    context                 = (nil)
    module_contexts         = {
        arr          = {
            buffer       = 0x4d1f80
            element_size = 8U
        }
        v            = 0x4d1f80
        v_modifiable = 0x4d1f80
    }
    parser                  = 0x4b8f90
    state                   = CLIENT_COMMAND_STATE_WAIT_INPUT
    start_time              = {
        tv_sec  = 0
        tv_usec = 0
    }
    start_ioloop_wait_usecs = 0
    running_usecs           = 0
    bytes_in                = 0
    bytes_out               = 0
    sync                    = (nil)
    uid                     = 0
    cancel                  = 0
    param_error             = 0
    search_save_result      = 0
    search_save_result_used = 0
    temp_executed           = 0
    tagline_sent            = 0
    executing               = 0
}


(dbx) list    
  280           str_append(str, " (");
  281           for (cmd = client->command_queue; cmd != NULL; cmd = cmd->next) {
  282                   str_append(str, cmd->name);
  283                   if (cmd->next != NULL)
  284                           str_append_c(str, ',');
  285                   running_usecs += cmd->running_usecs;
  286                   bytes_in += cmd->bytes_in;
  287                   bytes_out += cmd->bytes_out;
  288                   last_cmd = cmd;
  289           }


Probably related to these entries in the syslog:

Dec 11 16:18:47 mail dovecot: [ID 583609 mail.info] imap-login: Login: user=<perje>, method=PLAIN, rip=81.233.116.192, lip=130.236.160.9, mpid=9238, TLS, session=<CUwE16Am3fhR6X
TA>
Dec 11 16:18:50 mail dovecot: [ID 583609 mail.info] imap(perje): Connection closed in=196 out=995
Dec 11 16:18:50 mail dovecot: [ID 583609 mail.info] imap(perje): Connection closed in=168 out=5683
Dec 11 16:18:50 mail dovecot: [ID 583609 mail.info] imap(perje): Connection closed in=168 out=4713
Dec 11 16:18:50 mail dovecot: [ID 583609 mail.info] imap(perje): Connection closed in=194 out=1016
Dec 11 16:18:50 mail dovecot: [ID 583609 mail.info] imap(perje): Connection closed in=182 out=970
Dec 11 16:18:50 mail dovecot: [ID 583609 mail.info] imap(perje): Connection closed in=193 out=895
Dec 11 16:18:50 mail dovecot: [ID 583609 mail.info] imap(perje): Connection closed in=196 out=995
Dec 11 16:18:50 mail dovecot: [ID 583609 mail.info] imap(perje): Connection closed in=184 out=894
Dec 11 16:18:51 mail dovecot: [ID 583609 mail.info] imap-login: Login: user=<perje>, method=PLAIN, rip=81.233.116.192, lip=130.236.160.9, mpid=9273, TLS, session=<1uJB16AmtOhR6X
TA>
Dec 11 16:18:52 mail dovecot: [ID 583609 mail.info] imap-login: Login: user=<perje>, method=PLAIN, rip=81.233.116.192, lip=130.236.160.9, mpid=9278, TLS, session=<kR5Q16AmaOZR6X
TA>
Dec 11 16:18:52 mail dovecot: [ID 583609 mail.info] imap(perje): Connection closed in=150 out=491
Dec 11 16:23:08 mail dovecot: [ID 583609 mail.info] imap-login: Login: user=<perje>, method=PLAIN, rip=130.236.172.166, lip=130.236.160.9, mpid=10796, TLS, session=<GvSJ5qAms9CC
7Kym>
Dec 11 16:23:08 mail dovecot: [ID 583609 mail.info] imap-login: Login: user=<perje>, method=PLAIN, rip=130.236.172.166, lip=130.236.160.9, mpid=10803, TLS, session=<nVqS5qAmttCC
7Kym>
Dec 11 16:23:08 mail dovecot: [ID 583609 mail.info] imap(perje): Connection closed in=150 out=491
Dec 11 16:23:13 mail dovecot: [ID 583609 mail.info] imap(perje): Connection closed in=150 out=491
Dec 11 16:24:10 mail dovecot: [ID 583609 mail.crit] imap(perje): Fatal: master: service(imap): child 9006 killed with signal 11 (core dumped)

(Would have been nice with a pid number in the syslog output :-)

-- 
[Ll.U] Peter Eriksson KITVS-IFM & ITI-NET IT.LiU.SE +46-70 518 2786