linux-kernel - Re: kernel BUG at drivers/vhost/vhost.c:LINE! (2)

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Message-ID: <20180409032835.GB1648@stefanha-x1.localdomain>
Date:   Mon, 9 Apr 2018 11:28:35 +0800
From:   Stefan Hajnoczi <stefanha@...il.com>
To:     "Michael S. Tsirkin" <mst@...hat.com>
Cc:     syzbot <syzbot+65a84dde0214b0387ccd@...kaller.appspotmail.com>,
        Jason Wang <jasowang@...hat.com>, kvm <kvm@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        Linux Virtualization <virtualization@...ts.linux-foundation.org>
Subject: Re: kernel BUG at drivers/vhost/vhost.c:LINE! (2)

On Mon, Apr 09, 2018 at 05:44:36AM +0300, Michael S. Tsirkin wrote:
> On Mon, Apr 09, 2018 at 10:37:45AM +0800, Stefan Hajnoczi wrote:
> > On Sat, Apr 7, 2018 at 3:02 AM, syzbot
> > <syzbot+65a84dde0214b0387ccd@...kaller.appspotmail.com> wrote:
> > > syzbot hit 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=65a84dde0214b0387ccd
> > 
> > To prevent duplicated work: I am working on this one.
> > 
> > Stefan
> 
> Do you want to try this patchset:
> https://lkml.org/lkml/2018/4/5/665
> 
> ?

Thanks, I'll give it a shot.

I also noticed a regression in commit
d65026c6c62e7d9616c8ceb5a53b68bcdc050525 ("vhost: validate log when
IOTLB is enabled") and am currently testing a fix.

Stefan

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