Re: WARNING in rcu_check_gp_start_stall

From: Borislav Petkov
Date: Fri Feb 22 2019 - 17:20:52 EST


On Fri, Feb 22, 2019 at 09:10:04AM -0800, syzbot wrote:
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit: 8a61716ff2ab Merge tag 'ceph-for-5.0-rc8' of git://github...
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=1531dd3f400000
> kernel config: https://syzkaller.appspot.com/x/.config?x=7132344728e7ec3f
> dashboard link: https://syzkaller.appspot.com/bug?extid=111bc509cd9740d7e4aa
> compiler: gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16d4966cc00000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10c492d0c00000

So I ran this for more than an hour in a guest here with the above
.config but nothing happened. The compiler I used is 8.2, dunno of that
makes the difference or I'm missing something else...

--
Regards/Gruss,
Boris.

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