From: Takashi Iwai <tiwai@suse.de>
To: Dmitry Vyukov <dvyukov@google.com>
Cc: syzbot <syzbot+150189c103427d31a053@syzkaller.appspotmail.com>,
alsa-devel@alsa-project.org, Victor Chibotaru <tchibo@google.com>,
syzkaller-bugs@googlegroups.com,
Thomas Gleixner <tglx@linutronix.de>,
Andrew Morton <akpm@linux-foundation.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Jaroslav Kysela <perex@perex.cz>,
Takashi Sakamoto <o-takashi@sakamocchi.jp>,
LKML <linux-kernel@vger.kernel.org>,
Andrey Ryabinin <aryabinin@virtuozzo.com>
Subject: Re: INFO: rcu detected stall in snd_pcm_oss_write3 (2)
Date: Sat, 07 Apr 2018 13:00:06 +0200 [thread overview]
Message-ID: <s5hin93gu2x.wl-tiwai@suse.de> (raw)
In-Reply-To: <CACT4Y+aTGHDimPZzeAi+QyJNio_NGTWfFM8xvndP9NceEPRwOQ@mail.gmail.com>
On Sat, 07 Apr 2018 12:19:33 +0200,
Dmitry Vyukov wrote:
>
> On Sat, Apr 7, 2018 at 11:56 AM, Takashi Iwai <tiwai@suse.de> wrote:
> > On Fri, 06 Apr 2018 23:14:01 +0200,
> > syzbot wrote:
> >>
> >> syzbot has found reproducer for the following crash on upstream commit
> >> 38c23685b273cfb4ccf31a199feccce3bdcb5d83 (Fri Apr 6 04:29:35 2018 +0000)
> >> Merge tag 'armsoc-drivers' of
> >> git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
> >> syzbot dashboard link:
> >> https://syzkaller.appspot.com/bug?extid=150189c103427d31a053
> >>
> >> So far this crash happened 15 times on upstream.
> >> C reproducer: https://syzkaller.appspot.com/x/repro.c?id=5405588854931456
> >> syzkaller reproducer:
> >> https://syzkaller.appspot.com/x/repro.syz?id=5561439796330496
> >> Raw console output:
> >> https://syzkaller.appspot.com/x/log.txt?id=5697900571000832
> >> Kernel config:
> >> https://syzkaller.appspot.com/x/.config?id=-5813481738265533882
> >> compiler: gcc (GCC) 8.0.1 20180301 (experimental)
> >
> > Thanks to the reproducer, I could spot out now.
> > Below is the patch (which was submitted as well).
>
> Great!
>
> There are 3 more recent stalls in sound, does this fix them as well?
>
> https://groups.google.com/forum/#!msg/syzkaller-bugs/MGfk8WH3O6k/ja2xKpdcCAAJ
> https://groups.google.com/forum/#!msg/syzkaller-bugs/74HglwU94go/T89ohzlYCAAJ
> https://groups.google.com/forum/#!msg/syzkaller-bugs/D2xWV7WTRDk/5y2kZyBICAAJ
Yes, very likely.
Takashi
next prev parent reply other threads:[~2018-04-07 11:00 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-06 7:09 INFO: rcu detected stall in snd_pcm_oss_write3 (2) syzbot
2018-04-06 21:14 ` syzbot
2018-04-07 9:56 ` Takashi Iwai
2018-04-07 10:19 ` Dmitry Vyukov
2018-04-07 11:00 ` Takashi Iwai [this message]
2018-04-07 11:58 ` Dmitry Vyukov
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