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From:   Linus Torvalds <torvalds@linux-foundation.org>
Date:   Fri, 2 Jul 2021 22:19:46 -0700
Message-ID: <CAHk-=wisOVeVpH42f6i5qW1gxtYxbRJQXvpt=mdVx+8p=w-yMg@mail.gmail.com>
Subject: Re: [GIT PULL] sound updates for 5.14-rc1
To:     Takashi Iwai <tiwai@suse.de>
Cc:     Mark Brown <broonie@kernel.org>,
        Liam Girdwood <lgirdwood@gmail.com>,
        Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
        alsa-devel@alsa-project.org
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On Fri, Jul 2, 2021 at 9:37 PM Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
> But I thought I'd report this as a likely candidate.

Confirmed. The watchdog hang bisects right down to commit 9ce650a75a3b
("ALSA: usb-audio: Reduce latency at playback start").

And reverting it on top of my tree also fixes the hang, so it's not
some bisection fluke.

I have no idea what is actually wrong with that commit, but it most
definitely is the problem, and I have reverted it in my tree so that I
can continue merging stuff tomorrow.

                 Linus