NMI watchdog

[Justin Keller]

Hello,
Although not running a vanilla kernel on this machine, I have reported
the issue to the distribution's bug tracking system. It has been
almost a week with no response, so I am sending this email.

Multiple times, when I return to my computer from being away for a
little while, I noticed:
Message from syslogd@redacted at Mar 23 XX:XX:XX ...
kernel:[1059322.470817] NMI watchdog: BUG: soft lockup - CPU#1 stuck
for 22s! [kswapd0:31]

Dmesg | grep NMI produced:
[1151200.727734] sending NMI to all CPUs:
[1151200.727812] NMI backtrace for cpu 0
[1151200.764129] INFO: NMI handler
(arch_trigger_all_cpu_backtrace_handler) took too long to run: 36.262
msecs
[1151200.764198] NMI backtrace for cpu 1
[1151216.700893] sending NMI to all CPUs:
[1151216.700984] NMI backtrace for cpu 1
[1151216.706524] NMI backtrace for cpu 0
[1723994.455161] <NMI> [<ffffffff81554a5e>] ? dump_stack+0x41/0x51

I didn't have time to grep for kswapd or to investigate further. Long
story short, the machine was shutdown shortly afterwords.

Justin

PS this was also sent to linux-watchdog. I forgot to turn of HTML, so
I had to re-send it here
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