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

Claudio Corvino ccorvino at trustitalia.it
Mon Dec 13 13:57:23 UTC 2021


Hi,

I have the same error in my replica server, it appears many times per day.

Log:

/Dec 13 13:01:23 Error: doveadm(xxx)<25513><vsFCF5w1t2GpYwAAbKtC3g>: 
read(xxx.xxx.xxx) failed: EOF (last sent=mailbox, last recv=mailbox)//
//Dec 13 13:34:43 Warning: doveadm(xxx)<26277><9e2rJOM9t2GlZgAAbKtC3g>: 
/mnt/mail-storage-lv0003/xxx/Maildir/dovecot-uidlist: Duplicate file 
entry at line 2162: 1639396906.M258993P16725.xxx,S=7304,W=7467 (uid 
71966 -> 71970)//
//Dec 13 14:26:20 Error: doveadm(27294): write(xxx) failed: Timed out 
after 60 seconds//
//Dec 13 14:26:20 Panic: doveadm(27294): file ioloop.c: line 865 
(io_loop_destroy): assertion failed: (ioloop == current_ioloop)//
//Dec 13 14:26:20 Error: doveadm(27294): Raw backtrace: 
/usr/lib/dovecot/libdovecot.so.0(backtrace_append+0x3d) [0x7f74d96f96ed] 
-> /usr/lib/dovecot/libdovecot.so.0(backtrace_get+0x1e) [0x7f74d96f980e] 
-> /usr/lib/dovecot/libdovecot.so.0(+0xff5cb) [0x7f74d97065cb] -> 
/usr/lib/dovecot/libdovecot.so.0(+0xff661) [0x7f74d9706661] -> 
/usr/lib/dovecot/libdovecot.so.0(+0x54a45) [0x7f74d965ba45] -> 
/usr/lib/dovecot/libdovecot.so.0(+0x57d95) [0x7f74d965ed95] -> 
dovecot/doveadm-server(+0x4af0f) [0x556a7a4b4f0f] -> 
dovecot/doveadm-server(doveadm_print_flush+0x1f) [0x556a7a4ae7af] -> 
dovecot/doveadm-server(doveadm_cmd_ver2_to_mail_cmd_wrapper+0x32b) 
[0x556a7a49dbcb] -> dovecot/doveadm-server(doveadm_cmd_run_ver2+0x4f7) 
[0x556a7a4ae307] -> dovecot/doveadm-server(+0x4874a) [0x556a7a4b274a] -> 
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x69) [0x7f74d971c679] 
-> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x131) 
[0x7f74d971dc61] -> 
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x4c) 
[0x7f74d971c71c] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x40) 
[0x7f74d971c8a0] -> 
/usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) 
[0x7f74d96903d3] -> dovecot/doveadm-server(main+0x102) [0x556a7a48d9f2] 
-> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xeb) 
[0x7f74d92e709b] -> dovecot/doveadm-server(_start+0x2a) [0x556a7a48da7a]//
//Dec 13 14:26:20 Fatal: doveadm(27294): master: service(doveadm): child 
27294 killed with signal 6 (core dumps disabled - 
https://dovecot.org/bugreport.html#coredumps)//
//Dec 13 14:29:06 Error: doveadm(27364): write(xxx) failed: Timed out 
after 60 seconds//
//Dec 13 14:29:06 Panic: doveadm(27364): file ioloop.c: line 865 
(io_loop_destroy): assertion failed: (ioloop == current_ioloop)//
//Dec 13 14:29:06 Error: doveadm(27364): Raw backtrace: 
/usr/lib/dovecot/libdovecot.so.0(backtrace_append+0x3d) [0x7f05717756ed] 
-> /usr/lib/dovecot/libdovecot.so.0(backtrace_get+0x1e) [0x7f057177580e] 
-> /usr/lib/dovecot/libdovecot.so.0(+0xff5cb) [0x7f05717825cb] -> 
/usr/lib/dovecot/libdovecot.so.0(+0xff661) [0x7f0571782661] -> 
/usr/lib/dovecot/libdovecot.so.0(+0x54a45) [0x7f05716d7a45] -> 
/usr/lib/dovecot/libdovecot.so.0(+0x57d95) [0x7f05716dad95] -> 
dovecot/doveadm-server(+0x4af0f) [0x558edcd93f0f] -> 
dovecot/doveadm-server(doveadm_print_flush+0x1f) [0x558edcd8d7af] -> 
dovecot/doveadm-server(doveadm_cmd_ver2_to_mail_cmd_wrapper+0x32b) 
[0x558edcd7cbcb] -> dovecot/doveadm-server(doveadm_cmd_run_ver2+0x4f7) 
[0x558edcd8d307] -> dovecot/doveadm-server(+0x4874a) [0x558edcd9174a] -> 
/usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x69) [0x7f0571798679] 
-> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x131) 
[0x7f0571799c61] -> 
/usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x4c) 
[0x7f057179871c] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x40) 
[0x7f05717988a0] -> 
/usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) 
[0x7f057170c3d3] -> dovecot/doveadm-server(main+0x102) [0x558edcd6c9f2] 
-> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xeb) 
[0x7f057136309b] -> dovecot/doveadm-server(_start+0x2a) [0x558edcd6ca7a]//
//Dec 13 14:29:06 Fatal: doveadm(27364): master: service(doveadm): child 
27364 killed with signal 6 (core dumps disabled - 
https://dovecot.org/bugreport.html#coredumps)/

My 'dovecot.conf':/
/

/# 2.3.17.1 (476cd46418): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.17.1 (a1a0b892)
# OS: Linux 4.19.0-18-amd64 x86_64 Debian 10.11
# Hostname: xxx
auth_mechanisms = plain login
default_vsz_limit = 1 G
doveadm_password = # hidden, use -P to show it
doveadm_port = xxx
mail_gid = 501
mail_location = maildir:~/Maildir:INDEX=/var/indexes/%n
mail_max_userip_connections = 50
mail_plugins = " notify replication"
mail_privileged_group = vmail
mail_uid = 501
managesieve_notify_capability = mailto
managesieve_sieve_capability = fileinto reject envelope 
encoded-character vacation subaddress comparator-i;ascii-numeric 
relational regex imap4flags copy include variables body enotify 
environment mailbox date index ihave duplicate mime foreverypart 
extracttext vacation-seconds imapflags notify
namespace inbox {
   inbox = yes
   location =
   mailbox Drafts {
     special_use = \Drafts
   }
   mailbox Junk {
     special_use = \Junk
   }
   mailbox "Posta inviata" {
     special_use = \Sent
   }
   mailbox Sent {
     special_use = \Sent
   }
   mailbox "Sent Messages" {
     special_use = \Sent
   }
   mailbox Trash {
     special_use = \Trash
   }
   prefix =
}
passdb {
   args = /etc/dovecot/dovecot-ldap.conf
   driver = ldap
}
plugin {
   mail_replica = tcp:xxx
   sieve = file:/var/www/html/ooo/%n;active=/var/www/html/ooo/%n/script
   sieve_default = /var/www/html/ooo/default.sieve
   sieve_duplicate_default_period = 14d
   sieve_duplicate_max_period = 7d
   sieve_extensions = +duplicate +notify +imapflags +vacation-seconds
   sieve_user_log = /var/www/html/ooo/%n/sieve_error.log
}
protocols = " imap lmtp sieve pop3"
replication_max_conns = 1
service aggregator {
   fifo_listener replication-notify-fifo {
     user = vmail
   }
   unix_listener replication-notify {
     user = vmail
   }
}
service auth {
   unix_listener /var/spool/postfix/private/auth {
     group = postfix
     mode = 0660
     user = postfix
   }
   unix_listener auth-master {
     group = vmail
     mode = 0660
     user = vmail
   }
}
service doveadm {
   inet_listener {
     port = 12345
   }
}
service imap-login {
   process_limit = 200
}
service lmtp {
   process_min_avail = 5
   unix_listener /var/spool/postfix/private/dovecot-lmtp {
     group = postfix
     mode = 0600
     user = postfix
   }
   user = vmail
}
service managesieve-login {
   inet_listener sieve {
     port = 4190
   }
   process_min_avail = 10
   service_count = 1
}
service replicator {
   process_min_avail = 1
   unix_listener replicator-doveadm {
     mode = 0666
     user = vmail
   }
}
service stats {
   unix_listener stats-reader {
     group = vmail
     mode = 0666
     user = vmail
   }
   unix_listener stats-writer {
     group = vmail
     mode = 0666
     user = vmail
   }
}
ssl_cert = </etc/dovecot/private/chain-star_xxx.pem
ssl_cipher_list = 
ALL:!LOW:!aNULL:!eNULL:!SSLv2:!RC4:!MD5:!DES:!EXP:!SEED:!IDEA:!3DES
ssl_dh = # hidden, use -P to show it
ssl_key = # hidden, use -P to show it
userdb {
   args = /etc/dovecot/dovecot-ldap.conf
   driver = ldap
}
protocol lmtp {
   mail_plugins = " notify replication sieve quota"
   postmaster_address = postmaster at xxx
}
protocol lda {
   auth_socket_path = /var/run/dovecot/auth-master
   hostname = xxx
   mail_plugins = " notify replication sieve quota"
}
protocol sieve {
   mail_max_userip_connections = 10
   managesieve_implementation_string = Dovecot Pigeonhole
   managesieve_logout_format = bytes=%i/%o
   managesieve_max_compile_errors = 5
   managesieve_max_line_length = 64 k
}/

My 'dovecot-ldap.conf':

/hosts = xxx
base = dc=xxx,dc=lan
ldap_version=3
auth_bind = yes
dn = cn=xxx,cn=xxx,dc=xxx,dc=lan
dnpass = #hidden
scope = subtree
#user_attrs = 
sAMAccountName=home=/mnt/mail-storage-lv0003/%$,=uid=501,=gid=501
user_attrs = 
sAMAccountName=user,=home=/mnt/mail-storage-lv0003/%n,=uid=501,=gid=501
pass_attrs = sAMAccountName=user
user_filter = (&(objectclass=person)(samaccountname=%n))
pass_filter= (&(objectclass=person)(samaccountname=%n))
iterate_attrs = sAMAccountName=user
# With following filter we exclude all objects without an email address, 
all computers and all inactive accounts
iterate_filter = 
(&(objectCategory=person)(mail=*)(objectClass=user)(!(userAccountControl:1.2.840.113556.1.4.803:=2)))/

Regards

On 19/11/21 10:27, Andreas Piper wrote:
> Hello,
>
> as these 'Panic'-Events continue to appear every few minutes in my 
> replicator-log, I would like to ask, if you have any hints how to 
> repair the correlated mailbox?
>
> Andreas
>
> Am 11.11.21 um 15:04 schrieb Piper Andreas:
>> 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
>>
>
>
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