You've given us a bunch of stack dumps, but not the explanation of why kernel dumped them. There should have been a few more informative messages before the stack dumps in your syslog. I'm going to guess it was a soft lockup warning message, perhaps? - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html