linux-kernel - Re: [syzbot] KASAN: use-after-free Read in udl_get_urb

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Date:   Thu, 1 Sep 2022 11:16:46 +0200
From:   Aleksandr Nogikh <nogikh@...gle.com>
To:     Takashi Iwai <tiwai@...e.de>
Cc:     syzbot <syzbot+f24934fe125a19d77eae@...kaller.appspotmail.com>,
        airlied@...ux.ie, airlied@...hat.com, daniel@...ll.ch,
        dri-devel@...ts.freedesktop.org,
        LKML <linux-kernel@...r.kernel.org>, sean@...rly.run,
        "'Aleksandr Nogikh' via syzkaller-bugs" 
        <syzkaller-bugs@...glegroups.com>, tzimmermann@...e.de
Subject: Re: [syzbot] KASAN: use-after-free Read in udl_get_urb_timeout

Let's tell syzbot about the series

#syz fix: Revert "drm/udl: Kill pending URBs at suspend and disconnect"

On Mon, Aug 22, 2022 at 2:26 PM Takashi Iwai <tiwai@...e.de> wrote:
>
> On Mon, 22 Aug 2022 11:09:31 +0200,
> syzbot wrote:
> >
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit:    5b6a4bf680d6 Add linux-next specific files for 20220818
> > git tree:       linux-next
> > console+strace: https://syzkaller.appspot.com/x/log.txt?x=12341a3d080000
> > kernel config:  https://syzkaller.appspot.com/x/.config?x=ead6107a3bbe3c62
> > dashboard link: https://syzkaller.appspot.com/bug?extid=f24934fe125a19d77eae
> > 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=12731867080000
> > C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=165b64f3080000
> >
> > The issue was bisected to:
> >
> > commit e25d5954264d1871ab2792c7ca2298b811462500
> > Author: Takashi Iwai <tiwai@...e.de>
> > Date:   Thu Aug 4 07:58:25 2022 +0000
> >
> >     drm/udl: Kill pending URBs at suspend and disconnect
>
> FYI, the fix including the revert of this commit was already
> submitted, waiting for review & merge:
>   https://lore.kernel.org/r/20220816153655.27526-1-tiwai@suse.de
>
>
> thanks,
>
> Takashi
>
> --
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