Hi Dave, On Wednesday 30 October 2013 06:01:40 Dave wrote: > Jürgen Beisert <jbe@...> writes: > > On Sunday 20 October 2013 20:56:18 Dave wrote: > > > Thought I would try 2013.09.0 with kernel 3.11 and have been trying to > > > sort a problem as follows: > > > > > > - at random times the cursor will stop flashing and even though px aux > > > shows that my application is running it is not. I can still navigate > > > directories and look at files, so something is still working. > > > > > > Nothing appears in the log files in /var/log (daemon.log, thttpd.log, > > > kern.log and user.log) > > > > > > Any hints on where to look next would be appreciated. > > > > You are the second person who reports about a stuck Linux-3.11 kernel. It > > seems the timer implementation is broken since 3.11 (the timer > > implementation was changed on the way to 3.11). The S3C2440 CPU has now HRT > > (high resolution timer) support. > > I have no idea how to trigger the fault. At least on my system it didn't > > hit me yet. > > > > Just an idea: when it hits you the next time, please "cat" the content > > of "/proc/interrupts" a few times and see if the timer interrupt still > > increments or not. > > Thanks for the hint, I wasn't getting anywhere hoping something would turn > up in a log file! > > Just tried your suggestion and while I was repeatedly invoking the command > the system locked and you are right the samsung_timer_irq is frozen.
Thanks for the report. I will report this regression on the ALKML mailing list. Regards, Juergen -- Pengutronix e.K. | Juergen Beisert | Linux Solutions for Science and Industry | http://www.pengutronix.de/ |
