Re: [alsa-devel] BUG: soft lockup

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@google.com

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.