From: Pavel Skripkin <paskripkin@gmail.com>
To: syzbot <syzbot+c2f6f09fe907a838effb@syzkaller.appspotmail.com>
Cc: akpm@linux-foundation.org, coreteam@netfilter.org,
davem@davemloft.net, dsahern@kernel.org, fw@strlen.de,
kadlec@netfilter.org, kuba@kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
netdev@vger.kernel.org, netfilter-devel@vger.kernel.org,
pablo@netfilter.org, syzkaller-bugs@googlegroups.com,
yoshfuji@linux-ipv6.org
Subject: Re: [syzbot] WARNING: zero-size vmalloc in corrupted
Date: Wed, 23 Jun 2021 19:28:37 +0300 [thread overview]
Message-ID: <20210623192837.13792eae@gmail.com> (raw)
In-Reply-To: <20210623191928.69d279d1@gmail.com>
On Wed, 23 Jun 2021 19:19:28 +0300
Pavel Skripkin <paskripkin@gmail.com> wrote:
> On Wed, 23 Jun 2021 02:15:23 -0700
> syzbot <syzbot+c2f6f09fe907a838effb@syzkaller.appspotmail.com> wrote:
>
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit: 13311e74 Linux 5.13-rc7
> > git tree: upstream
> > console output:
> > https://syzkaller.appspot.com/x/log.txt?x=15d01e58300000 kernel
> > config: https://syzkaller.appspot.com/x/.config?x=42ecca11b759d96c
> > dashboard link:
> > https://syzkaller.appspot.com/bug?extid=c2f6f09fe907a838effb syz
> > repro:
> > https://syzkaller.appspot.com/x/repro.syz?x=14bb89e8300000 C
> > reproducer:
> > https://syzkaller.appspot.com/x/repro.c?x=17cc51b8300000
> >
> > The issue was bisected to:
> >
> > commit f9006acc8dfe59e25aa75729728ac57a8d84fc32
> > Author: Florian Westphal <fw@strlen.de>
> > Date: Wed Apr 21 07:51:08 2021 +0000
> >
> > netfilter: arp_tables: pass table pointer via nf_hook_ops
> >
> > bisection log:
> > https://syzkaller.appspot.com/x/bisect.txt?x=13b88400300000 final
> > oops:
> > https://syzkaller.appspot.com/x/report.txt?x=10788400300000 console
> > output: https://syzkaller.appspot.com/x/log.txt?x=17b88400300000
> >
>
> This one is similar to previous zero-size vmalloc, I guess :)
>
> #syz test
> git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
> master
>
>
Hah, I didn't notice that this one is already fixed by me. But the
patch is in the media tree, it's not upstreamed yet:
https://git.linuxtv.org/media_tree.git/commit/?id=c680ed46e418e9c785d76cf44eb33bfd1e8cf3f6
So,
#syz dup: WARNING: zero-size vmalloc in dvb_dmx_init
With regards,
Pavel Skripkin
next prev parent reply other threads:[~2021-06-23 16:28 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-23 9:15 [syzbot] WARNING: zero-size vmalloc in corrupted syzbot
2021-06-23 16:19 ` Pavel Skripkin
2021-06-23 16:28 ` Pavel Skripkin [this message]
2021-06-23 16:28 ` syzbot
2021-06-23 16:28 ` syzbot
2021-06-24 6:17 ` Dmitry Vyukov
2021-06-23 16:37 ` syzbot
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