On Mon, Apr 01, 2013 at 08:07:59AM +0800, Chen Gang wrote: > On 2013年03月30日 21:15, Frederic Weisbecker wrote: > > In order to arm the next timer to schedule, we take a sample of the > > current process or thread cputime. > > > > If the task is dying though, we don't arm anything but we > > cache the remaining timer expiration delta for further reads. > > > > Something similar is performed in posix_cpu_timer_get() but > > here we forget to take the process wide cputime sample > > before caching it. > > > > As a result we are storing random stack content, leading > > every further reads of that timer to return junk values. > > > > Fix this by taking the appropriate sample in the case of > > process wide timers. > > > > Reported-by: Andrew Morton <[email protected]> > > Reported-by: Chen Gang <[email protected]> > > Signed-off-by: Frederic Weisbecker <[email protected]> > > Cc: Stanislaw Gruszka <[email protected]> > > Cc: Thomas Gleixner <[email protected]> > > Cc: Peter Zijlstra <[email protected]> > > Cc: Ingo Molnar <[email protected]> > > Cc: Oleg Nesterov <[email protected]> > > Cc: Chen Gang <[email protected]> > > --- > > thank you for mark me as reported by, although I reported too late > (Andrew Morton is the first reporter).
Bug reporters simply deserve to be credited, no sorting is required ;) > > next, I should continue to try to find another issues about kernel. I encourage you to do so :) Thanks. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
