On Fri, Sep 30, 2011 at 11:19 AM, Eric B Munson <emunson@xxxxxxxxx> wrote:I am able to recreate on a second desktop I have here (same model CPU but a
different MB so I am fairly sure it isn't dying hardware). ÂIt looks to me like
a CPU softlocks and it stalls the process active there, so most recently that
was XOrg. ÂThe machine lets me login via ssh for a few minutes, but things like
ps and cat or /proc files will start to work and give some output but hang.
I cannot call reboot, nor can I sync the fs and reboot via SysRq. ÂMy next step
is to setup a netconsole to see if anything comes out in the syslog that I
cannot see.
I haven't had time to try & reproduce locally yet (apologies - things
have been coming up at me).
But a prime suspect would be a bad interaction with
CONFIG_MEMORY_HOTPLUG, as Kamezama remarked in his reply to patch 4. I
think this could be the most likely cause of what you're observing.