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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1083560 Title: CPU softlock on shutdown since kernel 3.2.0-32 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+bug/1083560/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs