Messages in this thread | | | Date | Thu, 11 Apr 2013 11:47:37 -0700 | From | Dave Hansen <> | Subject | Re: sched/cputime: sig->prev_stime underflow |
| |
On 04/11/2013 12:45 AM, Stanislaw Gruszka wrote: > On Mon, Apr 08, 2013 at 08:57:16AM -0700, Dave Hansen wrote: >> On 04/04/2013 04:41 PM, Frederic Weisbecker wrote: >>> Does this patch fix the issue for you? >>> https://lkml.org/lkml/2013/4/4/112 >> >> Nope, that doesn't seem to make a difference. I'm still seeing the >> underflow. I'm pretty sure it's already gone to hell by the time it >> gets in to the loop that's patched there. > > Perhaps this is glich introduced by commit > 62188451f0d63add7ad0cd2a1ae269d600c1663d "cputime: Avoid multiplication > overflow on utime scaling" . Could you try to revert it and see if that > helps. If it does not, can you check if problem happen on 3.8 ?
I'll run a bit longer, but reverting 62188451f0d63add7ad0cd2a1ae269d600c1663d _does_ seem to make it happier.
| |