Re: Google Chrome cause locks held in system (kernel 4.15 rc2)

Tetsuo Handa
2017-12-11T00:14:38Z

mikhail wrote:
> On Sat, 2017-12-09 at 23:14 +0900, Tetsuo Handa wrote:
> > Under OOM lockup situation, kernel messages can unlikely be saved to syslog
> > files, for writing to files involves memory allocation. Can you set up
> > netconsole or serial console explained at
> > http://events.linuxfoundation.org/sites/events/files/slides/LCJ2014-en_0.pdf ?
> > If neither console is possible, it would become difficult to debug.
>
> netconsole works only within local network? destination ip may be from
> another network?

netconsole can work with another network.

(step 1) Verify that UDP packets are reachable. You can test with

# echo test > /dev/udp/213.136.82.171/6666

if you are using bash.

(step 2) Verify that you specified gateway's MAC address rather than
target host's MAC address. "ff:ff:ff:ff:ff:ff" suggests that
netconsole is unable to resolve correct MAC address.