Hello,

I tried to login (ssh) to one (of three) freeipa systems running on CentOS 
yesterday without success.

Running 'ssh root@service-2', the server would reply with a password prompt and 
then hang.  I went to the system console to discover many of the following 
messages on screen:

Jun 30 <time> service-2 kernel: INFO: task sssd_be:22447 blocked for more than 
120 seconds.
Jun 30 <time> service-2 kernel: "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message. 

Trying to login on the console, I was able to enter and username, but the login 
process would hang after entering the password.  After rebooting the system, I 
see the following in /var/log/messages

Jun 30 00:29:29 service-2 kernel: INFO: task sssd_be:22447 blocked for more 
than 120 seconds.
Jun 30 00:29:29 service-2 kernel: "echo 0 > 
/proc/sys/kernel/hung_task_timeout_secs" disables this message.
Jun 30 00:29:29 service-2 kernel: sssd_be       D 000000000000000e     0 22447  
 3673 0x00000084
Jun 30 00:29:29 service-2 kernel: ffff880827dffce8 0000000000000086 
0000000000000000 0000000000000000
Jun 30 00:29:29 service-2 kernel: 0000000000000000 0000000000000000 
0000000000000000 0000000000000000
Jun 30 00:29:29 service-2 kernel: ffff880827255058 ffff880827dfffd8 
000000000000fb88 ffff880827255058
Jun 30 00:29:29 service-2 kernel: Call Trace:
Jun 30 00:29:29 service-2 kernel: [<ffffffffa00aabf0>] ? 
ext4_file_open+0x0/0x130 [ext4]
Jun 30 00:29:29 service-2 kernel: [<ffffffff8150ea85>] 
schedule_timeout+0x215/0x2e0
Jun 30 00:29:29 service-2 kernel: [<ffffffff8117e574>] ? 
nameidata_to_filp+0x54/0x70
Jun 30 00:29:29 service-2 kernel: [<ffffffff812773c9>] ? 
cpumask_next_and+0x29/0x50
Jun 30 00:29:29 service-2 kernel: [<ffffffff8150e703>] 
wait_for_common+0x123/0x180
Jun 30 00:29:29 service-2 kernel: [<ffffffff81063310>] ? 
default_wake_function+0x0/0x20
Jun 30 00:29:29 service-2 kernel: [<ffffffff8150e81d>] 
wait_for_completion+0x1d/0x20
Jun 30 00:29:29 service-2 kernel: [<ffffffff8106513c>] sched_exec+0xdc/0xe0
Jun 30 00:29:29 service-2 kernel: [<ffffffff8118a100>] do_execve+0xe0/0x2c0
Jun 30 00:29:29 service-2 kernel: [<ffffffff810095ea>] sys_execve+0x4a/0x80
Jun 30 00:29:29 service-2 kernel: [<ffffffff8100b4ca>] stub_execve+0x6a/0xc0

This sequence of messages is repeated many times.

I did not have any problems logging into the other two freeipa systems on the 
network.  The servers are currently used exclusively for freeipa.

Any ideas what may have happened?


rpm -qa | grep ipa
libipa_hbac-1.9.2-82.7.el6_4.x86_64
ipa-admintools-3.0.0-26.el6_4.4.x86_64
python-iniparse-0.3.1-2.1.el6.noarch
ipa-client-3.0.0-26.el6_4.4.x86_64
ipa-server-selinux-3.0.0-26.el6_4.4.x86_64
ipa-server-3.0.0-26.el6_4.4.x86_64
ipa-pki-common-theme-9.0.3-7.el6.noarch
libipa_hbac-python-1.9.2-82.7.el6_4.x86_64
ipa-python-3.0.0-26.el6_4.4.x86_64
ipa-pki-ca-theme-9.0.3-7.el6.noarch


Thanks,
Mike

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