2020-08-26 14:21:53

by Mark Brown

[permalink] [raw]
Subject: Re: INFO: task can't die in p9_fd_close

On Wed, Aug 26, 2020 at 03:38:15AM -0700, syzbot wrote:

> console output: https://syzkaller.appspot.com/x/log.txt?x=10615b36900000
> kernel config: https://syzkaller.appspot.com/x/.config?x=a61d44f28687f508
> dashboard link: https://syzkaller.appspot.com/bug?extid=fbe34b643e462f65e542
> compiler: gcc (GCC) 10.1.0-syz 20200507
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15920a05900000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13a78539900000
>
> The issue was bisected to:
>
> commit af3acca3e35c01920fe476f730dca7345d0a48df
> Author: Daniel Baluta <[email protected]>
> Date: Tue Feb 20 12:53:10 2018 +0000
>
> ASoC: ak5558: Fix style for SPDX identifier

This bisection is clearly not accurate, I'm guessing the bug is
intermittent and it was just luck that landed it on this commit.


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2020-08-27 16:23:46

by Dominique Martinet

[permalink] [raw]
Subject: Re: INFO: task can't die in p9_fd_close

Mark Brown wrote on Wed, Aug 26, 2020:
> On Wed, Aug 26, 2020 at 03:38:15AM -0700, syzbot wrote:
>
> > console output: https://syzkaller.appspot.com/x/log.txt?x=10615b36900000
> > kernel config: https://syzkaller.appspot.com/x/.config?x=a61d44f28687f508
> > dashboard link: https://syzkaller.appspot.com/bug?extid=fbe34b643e462f65e542
> > compiler: gcc (GCC) 10.1.0-syz 20200507
> > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15920a05900000
> > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13a78539900000
> >
> > The issue was bisected to:
> >
> > commit af3acca3e35c01920fe476f730dca7345d0a48df
> > Author: Daniel Baluta <[email protected]>
> > Date: Tue Feb 20 12:53:10 2018 +0000
> >
> > ASoC: ak5558: Fix style for SPDX identifier
>
> This bisection is clearly not accurate, I'm guessing the bug is
> intermittent and it was just luck that landed it on this commit.

It's a bug that's been present since day 1 pretty much.

I have a fix that had been overcooking for a while which I had planned
to take in this cycle -- I'll submit to -next during next week, so
hopefully syzbot will be able to spend its time more usefully after
that.

--
Dominique