Comment 1 for bug 485563

Here's some of the syslog (from ec2 console) from the unresponsive instance.

SGI XFS Quota Management subsystem

    [74G[ OK ]
 * Setting kernel variables (/etc/sysctl.conf)...
    [80G
    [74G[ OK ]
 * Setting kernel variables (/etc/sysctl.d/10-console-messages.conf)...

    [80G
    [74G[ OK ]
 * Setting kernel variables (/etc/sysctl.d/10-network-security.conf)...
    [80G
    [74G[ OK ]
 * Activating swap...
    [80G
    [74G[ OK ]
 * Checking root file system...

    [80G fsck 1.41.4 (27-Jan-2009)
/dev/sda1: clean, 36224/655360 files, 370976/2621440 blocks

    [74G[ OK ]
 * Checking file systems...
    [80G fsck 1.41.4 (27-Jan-2009)

    [74G[ OK ]

 * Mounting local filesystems...
    [80G mount: none already mounted or /sys busy
mount: according to mtab, sysfs is already mounted on /sys
BUG: soft lockup detected on CPU#0!

BUG: soft lockup detected on CPU#0!