Public bug reported:
I have attached an EonStor iSCSI host to a server running Ubuntu 12.04.1 LTS
64bit, running with kernel 3.2.0-33. Therefore i am using multipath and 2
network devices.
Whenever i shutdown or reboot the server the kernel hangs:
* Stopping atop system monitor: atop.
* Stopping multipath daemon multipathd [ OK ]
* Stopping Name Service Cache Daemon nscd [ OK ]
* Stopping LDAP connection daemon nslcd [ OK ]
* Stopping SASL Authentication Daemon saslauthd [ OK ]
* Stopping MD monitoring service mdadm --monitor [ OK ]
* Stopping NFS kernel daemon [ OK ]
* Unexporting directories for NFS kernel daemon... [ OK ]
* Stopping OpenLDAP slapd [ OK ]
* Asking all remaining processes to terminate... [ OK ]
* All processes ended within 1 seconds.... [ OK ]
rpcbind: rpcbind terminating on signal. Restart with "rpcbind -w"
* Deconfiguring network interfaces...
[ 1676.257052] BUG: soft lockup - CPU#2 stuck for 23s! [kworker/u:0:3188]
[ 1676.257600] Stack:
[ 1676.257741] Call Trace:
[ 1676.257943] Code: 9d 66 66 90 66 90 5d c3 0f 1f 40 00 55 48 89 e5 48 83 ec
10 48 89 5d f0 4c 89 65 f8 66 66 66 66 90 9c 58 66 66 90 66 90 48 89 c3 <fa> 66
66 90 66 66 90 48 89 de e8 52 2a 9e ff 66 90 48 89 d8 4c
...
When i switch back to kernel 3.2.0-29 the reboot works, but still things
don't seem to be sane, as the network is disconnected before i am able
to unmount the filesystems fetched via iSCSI:
* Stopping atop system monitor: atop.
* Stopping multipath daemon multipathd [ OK ]
* Stopping Name Service Cache Daemon nscd [ OK ]
* Stopping LDAP connection daemon nslcd [ OK ]
* Stopping SASL Authentication Daemon saslauthd [ OK ]
* Stopping MD monitoring service mdadm --monitor [ OK ]
* Stopping NFS kernel daemon [ OK ]
* Unexporting directories for NFS kernel daemon... [ OK ]
* Stopping OpenLDAP slapd [ OK ]
* Asking all remaining processes to terminate... [ OK ]
* All processes ended within 1 seconds.... [ OK ]
rpcbind: rpcbind terminating on signal. Restart with "rpcbind -w"
* Deconfiguring network interfaces...
* Deactivating swap... [ OK ]
* Unmounting local filesystems...
[ 35.296645] end_request: I/O error, dev dm-1, sector 10238558242
[ 35.297043] Buffer I/O error on device dm-2, logical block 1279819776
[ 35.297484] JBD2: I/O error detected when updating journal superblock for
dm2-8.
[ 35.297988] end_request: I/O error, dev dm-1, sector 10238558242
[ 35.298380] Buffer I/O error on device dm-2, logical block 1279819776
[ 35.298802] JBD2: I/O error detected when updating journal superblock for
dm2-8.
[ 35.299285] end_request: I/O error, dev dm-1, sector 10238558242
[ 35.299680] Buffer I/O error on device dm-2, logical block 1279819776
[ 35.308467] JBD2: I/O error detected when updating journal superblock for
dm2-8.
[ 35.329612] end_request: I/O error, dev dm-1, sector 34
[ 35.339448] Buffer I/O error on device dm-2, logical block 0
[ OK ]
* Disconnecting iSCSI targets [ OK ]
* Stopping iSCSI initiator service [ OK ]
* Will now restart
If any additional information is required, just let me know. Thanks!
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1083560
Title:
CPU softlock on shutdown since kernel 3.2.0-32
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