From: "Michael S. Tsirkin" <mst@redhat.com>
To: Laurent Vivier <lvivier@redhat.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>,
syzbot <syzbot+b86736b5935e0d25b446@syzkaller.appspotmail.com>,
davem@davemloft.net, herbert@gondor.apana.org.au,
jiri@nvidia.com, kuba@kernel.org, leonro@nvidia.com,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
mpm@selenic.com, netdev@vger.kernel.org,
syzkaller-bugs@googlegroups.com
Subject: Re: [syzbot] KASAN: slab-out-of-bounds Read in copy_data
Date: Wed, 27 Oct 2021 03:20:02 -0400 [thread overview]
Message-ID: <20211027031847-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <6c7e48b9-5204-352f-18e7-26b13d70f966@redhat.com>
On Wed, Oct 27, 2021 at 09:08:04AM +0200, Laurent Vivier wrote:
> On 27/10/2021 00:34, Eric Dumazet wrote:
> >
> >
> > On 10/26/21 9:39 AM, syzbot wrote:
> > > Hello,
> > >
> > > syzbot found the following issue on:
> > >
> > > HEAD commit: 9ae1fbdeabd3 Add linux-next specific files for 20211025
> > > git tree: linux-next
> > > console output: https://syzkaller.appspot.com/x/log.txt?x=1331363cb00000
> > > kernel config: https://syzkaller.appspot.com/x/.config?x=aeb17e42bc109064
> > > dashboard link: https://syzkaller.appspot.com/bug?extid=b86736b5935e0d25b446
> > > compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> > > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=116ce954b00000
> > > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=132fcf62b00000
> > >
> > > The issue was bisected to:
> > >
> > > commit 22849b5ea5952d853547cc5e0651f34a246b2a4f
> > > Author: Leon Romanovsky <leonro@nvidia.com>
> > > Date: Thu Oct 21 14:16:14 2021 +0000
> > >
> > > devlink: Remove not-executed trap policer notifications
> >
> > More likely this came with
> >
> > caaf2874ba27b92bca6f0298bf88bad94067ec37 hwrng: virtio - don't waste entropy
> >
>
> I'm going to have a look.
>
> Thanks,
> Laurent
How bad is it if we just drop this and waste some bytes of entropy?
--
MST
next prev parent reply other threads:[~2021-10-27 7:20 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-26 16:39 [syzbot] KASAN: slab-out-of-bounds Read in copy_data syzbot
2021-10-26 22:34 ` Eric Dumazet
2021-10-27 7:08 ` Laurent Vivier
2021-10-27 7:20 ` Michael S. Tsirkin [this message]
2021-10-27 7:31 ` Laurent Vivier
2021-10-27 13:11 ` Laurent Vivier
2021-10-27 13:36 ` Dmitry Vyukov
2021-10-27 15:28 ` Michael S. Tsirkin
2021-10-27 16:25 ` Laurent Vivier
2021-10-27 17:03 ` Laurent Vivier
2021-10-27 18:20 ` Laurent Vivier
2021-10-27 18:38 ` Michael S. Tsirkin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20211027031847-mutt-send-email-mst@kernel.org \
--to=mst@redhat.com \
--cc=davem@davemloft.net \
--cc=eric.dumazet@gmail.com \
--cc=herbert@gondor.apana.org.au \
--cc=jiri@nvidia.com \
--cc=kuba@kernel.org \
--cc=leonro@nvidia.com \
--cc=linux-crypto@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=lvivier@redhat.com \
--cc=mpm@selenic.com \
--cc=netdev@vger.kernel.org \
--cc=syzbot+b86736b5935e0d25b446@syzkaller.appspotmail.com \
--cc=syzkaller-bugs@googlegroups.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.