Am Samstag, den 31.10.2015, 16:21 +0100 schrieb Richard Weinberger:
> Am 31.10.2015 um 16:16 schrieb Thomas Meyer:
> > mhh. strange. I didn't see this behaviour on my machine, but my
> > machine
> > is a rare single core system so, likely a race condition while
> > relaying
> > the timer interrupt to the userspace process.
> 
> Here I can trigger it by starting UML, logging in and waiting ~5min.
> Then i try to run "top" --> top hangs forever.
> 
> > But I'm out of ideas how this could happen!
> 
> Maybe some stupid timeslice over/underflow.
> 
> > what happens when you send the hanging process a SIGVTALRM signal?
> > does
> > it proceed correctly?
> 
> You mean sending SIGVTALRM to the UML host process?

No, to the hanging userspace process, maybe the uml host process did
receive a timer interrupt, but failed to relay this signal to the
correct userspace process.

> It runs normally, I can also login on other ttys.
> 
> Thanks,
> //richard


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