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Re: sound: divide by 0 in snd_hrtimer_callback (or hang)

From Takashi Iwai <tiwai@suse.de>
Newsgroups linux.kernel
Subject Re: sound: divide by 0 in snd_hrtimer_callback (or hang)
Date 2016-09-06 18:20 +0200
Message-ID <sergl-4jl-27@gated-at.bofh.it> (permalink)
References <sdioN-58V-27@gated-at.bofh.it> <seoiv-2rH-37@gated-at.bofh.it> <seos9-2uF-21@gated-at.bofh.it> <seoVc-2EA-33@gated-at.bofh.it> <sepex-30H-11@gated-at.bofh.it>
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On Tue, 06 Sep 2016 16:06:08 +0200,
Dmitry Vyukov wrote:
> 
> > Do you really see the zero-division error with sticks=1 fix?  That's
> > unexpected.
> 
> Yes, just reproduced it again.
> I am on 0693c28cfc8e25f18c25b65a8942c026f1854a3c of linux-next now, so
> I already have:
>     commit 6b760bb2c63a9e322c0e4a0b5daf335ad93d5a33
>     ALSA: timer: fix division by zero after SNDRV_TIMER_IOCTL_CONTINUE
> 
> Compiled the program verbatim and run it using stress utility (http
> s://godoc.org/golang.org/x/tools/cmd/stress namely just runs the
> program in parallel loop) and instantly get the following crash.

OK, I'll take a deeper look.


thanks,

Takashi

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Thread

sound: divide by 0 in snd_hrtimer_callback (or hang) Dmitry Vyukov <dvyukov@google.com> - 2016-09-03 14:40 +0200
  Re: sound: divide by 0 in snd_hrtimer_callback (or hang) Takashi Iwai <tiwai@suse.de> - 2016-09-06 15:10 +0200
    Re: sound: divide by 0 in snd_hrtimer_callback (or hang) Dmitry Vyukov <dvyukov@google.com> - 2016-09-06 15:20 +0200
      Re: sound: divide by 0 in snd_hrtimer_callback (or hang) Takashi Iwai <tiwai@suse.de> - 2016-09-06 15:50 +0200
        Re: sound: divide by 0 in snd_hrtimer_callback (or hang) Dmitry Vyukov <dvyukov@google.com> - 2016-09-06 16:10 +0200
        Re: sound: divide by 0 in snd_hrtimer_callback (or hang) Takashi Iwai <tiwai@suse.de> - 2016-09-06 18:20 +0200
          Re: sound: divide by 0 in snd_hrtimer_callback (or hang) Takashi Iwai <tiwai@suse.de> - 2016-09-07 17:10 +0200
            Re: sound: divide by 0 in snd_hrtimer_callback (or hang) Dmitry Vyukov <dvyukov@google.com> - 2016-09-08 17:20 +0200
              Re: sound: divide by 0 in snd_hrtimer_callback (or hang) Takashi Iwai <tiwai@suse.de> - 2016-09-08 17:50 +0200

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