dovecot - Nov 2021 - dovecot-2.3.17: "Panic: file ioloop.c: line 865"

> On 11/11/2021 15:53 Piper Andreas <piper at hrz.uni-marburg.de>
wrote:
> 
>  
> Hello,
> 
> since the upgrade from dovecot-2.3.16 to 2.3.17 I get
'Panic'-errors in
> the system-log of my replicator hosts. See below for log messages, 
> doveconf-output and gdb-backtrace. Storage filesystem is ZFS.
> 
> The error seems to be correlated with exactly one user-mailbox, this 
> user is repeatedly noted as 'failed' in replication status,
although
> replication of this mailbox seems to work, as the mailbox status shows 
> always the identical size on both replicators. The error can be produced 
> by forcing replication of this individual mailbox.
> 
> Is there anything I can do to repair this mailbox?
> 
> Thanks for any hints,
> Andreas
> 
 
Can you install dovecot debug symbols and redo the gdb backtrace? Package name
is likely `dovecot-dbg`.

Aki

Hello,
>   
> Can you install dovecot debug symbols and redo the gdb backtrace? Package
name is likely `dovecot-dbg`.
> 
done, thanks for the hint.

Andreas

(gdb) bt
#0  __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#1  0x00007f4e58be0921 in __GI_abort () at abort.c:79
#2  0x00007f4e59427a11 in default_fatal_finish (status=0, 
type=LOG_TYPE_PANIC) at failures.c:459
#3  fatal_handler_real (ctx=<optimized out>, format=<optimized out>,
args=<optimized out>) at failures.c:471
#4  0x00007f4e59427b01 in i_internal_fatal_handler (ctx=<optimized out>, 
format=<optimized out>, args=<optimized out>)
     at failures.c:872
#5  0x00007f4e593744a7 in i_panic (format=format at entry=0x7f4e5946ab88 
"file %s: line %d (%s): assertion failed: (%s)")
     at failures.c:524
#6  0x00007f4e5944121c in io_loop_destroy 
(_ioloop=_ioloop at entry=0x7ffd0e203e68) at ioloop.c:865
#7  0x0000563d0150ffb6 in doveadm_print_server_flush () at 
doveadm-print-server.c:106
#8  0x0000563d01508fb7 in doveadm_print (
     value=0x563d0269ced8 "AQAAAFoYRziwaStNyDEAAEKX94joZK5JAwAAAAQ",
'A'
<repeats 20 times>, "DAAAAMu73BjjBalfFPQAANPIMJnB2rkkBAAAAAg",
'A'
<repeats 20 times>, "EAAAD3Gkc4sGkrTcgxAABCl/eI02OuSQIAAAAD",
'A'
<repeats 21 times>, "gAAAD4SNQYx691evBkAANXM"...)
     at doveadm-print.c:87
#9  0x0000563d014f4427 in cmd_dsync_run (_ctx=0x563d01fc7cc8, 
user=<optimized out>) at doveadm-dsync.c:713
#10 0x0000563d014f6a44 in doveadm_mail_next_user 
(ctx=ctx at entry=0x563d01fc7cc8, error_r=error_r at entry=0x7ffd0e204108)
     at doveadm-mail.c:462
#11 0x0000563d014f76be in doveadm_mail_single_user 
(ctx=ctx at entry=0x563d01fc7cc8, error_r=error_r at entry=0x7ffd0e204108)
     at doveadm-mail.c:493
#12 0x0000563d014f7c6f in doveadm_mail_cmd_exec (wildcard_user=0x0, 
ctx=0x563d01fc7cc8) at doveadm-mail.c:654
#13 doveadm_cmd_ver2_to_mail_cmd_wrapper (cctx=<optimized out>) at 
doveadm-mail.c:983
#14 0x0000563d01508c1b in doveadm_cmd_run_ver2 (argc=argc at entry=9, 
argv=argv at entry=0x563d01f6b3d0, cctx=cctx at entry=0x7ffd0e204260)
     at doveadm-cmd.c:465
#15 0x0000563d0150d612 in doveadm_cmd_server_run_ver2 
(cctx=0x7ffd0e204260, argv=0x563d01f6b3d0, argc=9, conn=0x563d01fc1988)
     at client-connection-tcp.c:187
#16 doveadm_cmd_handle (cctx=0x7ffd0e204260, argv=<optimized out>, 
argc=<optimized out>, cmd_name=<optimized out>,
     conn=0x563d01fc1988) at client-connection-tcp.c:214
#17 client_handle_command (args=<optimized out>, conn=0x563d01fc1988) at 
client-connection-tcp.c:284
#18 client_connection_tcp_input (conn=0x563d01fc1988) at 
client-connection-tcp.c:436
#19 0x00007f4e594406d9 in io_loop_call_io (io=0x563d01fc5950) at 
ioloop.c:737
#20 0x00007f4e59442034 in io_loop_handler_run_internal 
(ioloop=ioloop at entry=0x563d01f73ed0) at ioloop-epoll.c:222
#21 0x00007f4e594407e0 in io_loop_handler_run (ioloop=<optimized out>) 
at ioloop.c:789
#22 0x00007f4e59440a18 in io_loop_run (ioloop=0x563d01f73ed0) at 
ioloop.c:762
#23 0x00007f4e593a6a23 in master_service_run (service=0x563d01f73d30, 
callback=<optimized out>) at master-service.c:863
#24 0x0000563d014e6922 in main (argc=<optimized out>, argv=<optimized 
out>) at main.c:124

-- 
________________________________________________________________________
Dr. Andreas Piper, Hochschulrechenzentrum der Philipps-Univ. Marburg
           Hans-Meerwein-Stra?e 6, 35032 Marburg, Germany
Phone: +49 6421 28-23521  Fax: -26994  E-Mail: piper at HRZ.Uni-Marburg.DE

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