From: Alexander Potapenko <glider@google.com>
To: Hans Verkuil <hverkuil@xs4all.nl>
Cc: syzbot <syzbot+6c0effb5877f6b0344e2@syzkaller.appspotmail.com>,
David Miller <davem@davemloft.net>,
linux-can@vger.kernel.org, LKML <linux-kernel@vger.kernel.org>,
linux-media@vger.kernel.org, mchehab@kernel.org,
mchehab@s-opensource.com, mkl@pengutronix.de,
Networking <netdev@vger.kernel.org>,
socketcan@hartkopp.net,
syzkaller-bugs <syzkaller-bugs@googlegroups.com>
Subject: Re: kernel BUG at arch/x86/mm/physaddr.c:LINE! (2)
Date: Thu, 4 Apr 2019 16:54:43 +0200 [thread overview]
Message-ID: <CAG_fn=UGc2_CpLG0c8Ppv7X7ss6-wmXtEX76=yLow=5_DNCH2g@mail.gmail.com> (raw)
In-Reply-To: <be750b12-ba3d-ecb4-541a-ca3669bb75d7@xs4all.nl>
On Thu, Apr 4, 2019 at 4:51 PM Hans Verkuil <hverkuil@xs4all.nl> wrote:
>
> On 4/4/19 4:47 PM, Alexander Potapenko wrote:
> > On Wed, Mar 20, 2019 at 9:35 PM syzbot
> > <syzbot+6c0effb5877f6b0344e2@syzkaller.appspotmail.com> wrote:
> >>
> >> syzbot has bisected this bug to:
> >>
> >> commit 6d469a202ee73196d0df76025af80bd6a379e658
> >> Author: Mauro Carvalho Chehab <mchehab@s-opensource.com>
> >> Date: Sun May 14 17:07:21 2017 +0000
> >>
> >> Merge tag 'v4.12-rc1' into patchwork
> >>
> >> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=12639fd7200000
> >> start commit: 6d469a20 Merge tag 'v4.12-rc1' into patchwork
> >> git tree: upstream
> >> final crash: https://syzkaller.appspot.com/x/report.txt?x=15639fd7200000
> >> console output: https://syzkaller.appspot.com/x/log.txt?x=11639fd7200000
> >> kernel config: https://syzkaller.appspot.com/x/.config?x=d86f24333880b605
> >> dashboard link: https://syzkaller.appspot.com/bug?extid=6c0effb5877f6b0344e2
> >> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1312062b400000
> >> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=131bd093400000
> >>
> >> Reported-by: syzbot+6c0effb5877f6b0344e2@syzkaller.appspotmail.com
> >> Fixes: 6d469a20 ("Merge tag 'v4.12-rc1' into patchwork")
> >>
> >> --
> >> You received this message because you are subscribed to the Google Groups "syzkaller-bugs" group.
> >> To unsubscribe from this group and stop receiving emails from it, send an email to syzkaller-bugs+unsubscribe@googlegroups.com.
> >> To view this discussion on the web visit https://groups.google.com/d/msgid/syzkaller-bugs/000000000000462a4105848c8e12%40google.com.
> >> For more options, visit https://groups.google.com/d/optout.
> >
> > I believe this bug is caused by vivid_vid_cap_s_selection() calling
> > kfree(dev->bitmap_cap).
> > This makes little sense, as dev->bitmap_cap seems to be allocated
> > using vzalloc().
> >
>
> Yup, that should be vfree. There was a similar problem with bitmap_out that
> I fixed, but it looks I missed this one. Can you make a patch?
Yes, I've almost hit the send button :)
> Thanks,
>
> Hans
--
Alexander Potapenko
Software Engineer
Google Germany GmbH
Erika-Mann-Straße, 33
80636 München
Geschäftsführer: Paul Manicle, Halimah DeLaine Prado
Registergericht und -nummer: Hamburg, HRB 86891
Sitz der Gesellschaft: Hamburg
prev parent reply other threads:[~2019-04-04 14:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-16 23:32 kernel BUG at arch/x86/mm/physaddr.c:LINE! (2) syzbot
2018-11-18 20:09 ` syzbot
2019-03-20 20:35 ` syzbot
2019-04-04 14:47 ` Alexander Potapenko
2019-04-04 14:51 ` Hans Verkuil
2019-04-04 14:54 ` Alexander Potapenko [this message]
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