On Mon, Nov 6, 2017 at 11:39 AM, Takashi Iwai <tiwai@xxxxxxx> wrote: > On Thu, 02 Nov 2017 10:09:51 +0100, > Kirill A. Shutemov wrote: >> >> On Thu, Nov 02, 2017 at 09:23:58AM +0100, Takashi Iwai wrote: >> > >> > Currently the least ALSA timer interrupt period is limited to 1ms. >> > Does it still too much? >> > >> > Can the reproducer triggers it reliably? If yes, could you forward >> > it, too (and config as well), so that I'll try to dig down more exact >> > code paths? >> >> All of that is part of original report: >> >> http://lkml.kernel.org/r/94eb2c19df188b1926055cf13c21@xxxxxxxxxx >> >> marc.info hasn't stored repro.c for some reasone. Attached. >> >> I've just check it reproduces reliably for me in KVM. >> >> I also checked that it's not specific to THP -- still trigirable with huge >> pages disabled. > > I guess this is the same issue Jerome forwarded recently, and it was > fixed by limiting the amount of ALSA timer instances. I queued the > fix in sound git tree for-linus branch, commit > 9b7d869ee5a77ed4a462372bb89af622e705bfb8 > ALSA: timer: Limit max instances per timer > > It'll be likely included in 4.14 final. Thanks Let's also tell the bot what fixes this: #syz fix: ALSA: timer: Limit max instances per timer -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
