[Dovecot] Strange dmesg messages

Thu Apr 3 01:21:04 EEST 2008

Guys,

I'm getting strange messages on my new server with dovecot-1.1rc4 + lda
+ sieve + ldap + postfix + suse10.  This server is in production since
monday, and worked fine until today. The only thing I had changed was
dovecot from 1.1rc3 to 1.1rc4. I already enabled mail_debug, but I got
any erros after that.

Does anyone have any idea of what is happening?

Unable to handle kernel NULL pointer dereference at 0000000000000020
RIP:
<ffffffff8019df99>{sys_inotify_rm_watch+280}
PGD 1107f0067 PUD 1154c8067 PMD 0
Oops: 0002 [1] SMP
last sysfs file: /block/sda/size
CPU 2
Modules linked in: iptable_filter ip_tables x_tables nls_utf8 joydev st
sr_mod ipv6 bonding button battery ac raid0 xfs_quota ext3 jbd loop
sddlmfdrv ehci_hcd uhci_hcd hw_random usbcore shpchp ide_cd cdrom
pci_hotplug bnx2 sddlmadrv xfs exportfs dm_snapshot edd dm_mod fan
thermal processor lpfc scsi_transport_fc sg megaraid_sas piix sd_mod
scsi_mod ide_disk ide_core
Pid: 24319, comm: imap Tainted: P     U 2.6.16.21-0.8-smp #1
RIP: 0010:[<ffffffff8019df99>] <ffffffff8019df99>{sys_inotify_rm_watch
+280}
RSP: 0018:ffff810112abbf38  EFLAGS: 00010202
RAX: 0000000000000000 RBX: ffff81008bd57cf8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8100360627b8
RBP: 0000000000000000 R08: 000000000000db6a R09: 00000000051ae25c
R10: 0000000047f3f600 R11: 0000000000000213 R12: ffff81008bd57cc0
R13: ffff8100360627b8 R14: ffff8100360625b0 R15: ffff810121f7c580
FS:  00002b90b22a5ae0(0000) GS:ffff81012bd6b340(0000)
knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000020 CR3: 000000010adca000 CR4: 00000000000006e0
Process imap (pid: 24319, threadinfo ffff810112aba000, task
ffff810026b107d0)
Stack: 00000001f8c42d10 ffffffff8017b3d3 0000000000000001
00000000005ff680
       00000000006027a0 0000000000000000 00000000ffffffff
00000000005e0420
       00007ffff8c4af20 ffffffff8010a7be
Call Trace: <ffffffff8017b3d3>{sys_read+69}
<ffffffff8010a7be>{system_call+126}

And dovecot's log only shows:

Apr  2 18:09:16 mailserver02 dovecot: POP3(paulo.faria@): Disconnected:
Logged out top=0/0, retr=1/2248, del=0/495, size=2406763
2
Apr  2 18:09:20 mailserver02 deliver(everson.todoroki@):
msgid=<20080402210925.B94E2400A735 at relay01.com.br>: saved m
ail to INBOX
Apr  2 18:09:20 mailserver02 dovecot: child 24319 (imap) killed with
signal 9
Apr  2 18:09:21 mailserver02 dovecot: pop3-login: Login:
user=<afarber@>, method=PLAIN, rip=10.0.3.2, lip=10.0.149.2
Apr  2 18:09:21 mailserver02 deliver(everson.todoroki@):
msgid=<20080402210927.74F36400A8F0 at relay02.com.br>: saved m
ail to INBOX
Apr  2 18:09:23 mailserver02 dovecot: pop3-login: Login:
user=<alexandre.pellegrini@>, method=PLAIN, rip=10.0.3.2, lip=10.0.149.
2

mailserver02:~ # dovecot -n
# 1.1.rc4: /etc/dovecot//dovecot.conf
syslog_facility: local1
protocols: imap pop3
ssl_disable: yes
disable_plaintext_auth: no
shutdown_clients: no
login_dir: /usr//var/run/dovecot/login
login_executable(default): /usr//libexec/dovecot/imap-login
login_executable(imap): /usr//libexec/dovecot/imap-login
login_executable(pop3): /usr//libexec/dovecot/pop3-login
login_process_per_connection: no
login_greeting_capability(default): yes
login_greeting_capability(imap): yes
login_greeting_capability(pop3): no
login_process_size: 128
login_processes_count: 30
login_max_processes_count: 1024
login_max_connections: 512
max_mail_processes: 10240
mail_uid: 1033
mail_gid: 1033
mail_location: maildir:%h/Maildir
mail_debug: yes
mail_executable(default): /usr//libexec/dovecot/imap
mail_executable(imap): /usr//libexec/dovecot/imap
mail_executable(pop3): /usr//libexec/dovecot/pop3
mail_plugins(default): quota imap_quota autocreate
mail_plugins(imap): quota imap_quota autocreate
mail_plugins(pop3): quota
mail_plugin_dir(default): /usr//lib/dovecot/imap
mail_plugin_dir(imap): /usr//lib/dovecot/imap
mail_plugin_dir(pop3): /usr//lib/dovecot/pop3
maildir_copy_with_hardlinks = yes
pop3_uidl_format(default): %08Xu%08Xv
pop3_uidl_format(imap): %08Xu%08Xv
pop3_uidl_format(pop3): %f
pop3_client_workarounds(default):
pop3_client_workarounds(imap):
pop3_client_workarounds(pop3): outlook-no-nuls
namespace:
  type: private
  prefix: INBOX.
  inbox: yes
  list: yes
  subscriptions: yes
auth default:
  mechanisms: plain login
  cache_size: 20480
  cache_ttl: 300
  cache_negative_ttl: 0
  passdb:
    driver: ldap
    args: /etc/dovecot/dovecot-ldap.conf
  userdb:
    driver: prefetch
  userdb:
    driver: ldap
    args: /etc/dovecot/dovecot-ldap.conf
  socket:
    type: listen
    master:
      path: /var/run/dovecot/auth-master
      mode: 438
plugin:
  quota: maildir
  quota_rule: *:bytes=10240
  quota_rule2: *:messages=30000
  autocreate: SPAM.E Spam
  autocreate2: SPAM.Marcar Spam
  autocreate3: SPAM
  autocreate4: SPAM.Desmarcar Spam

[]s,

Raphael Costa