Re: KASAN: use-after-free Read in j1939_xtp_rx_abort_one

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On Mon, Jan 13, 2020 at 08:42:02AM -0800, syzbot wrote:
> syzbot suspects this bug was fixed by commit:
> 
> commit ddeeb7d4822ed06d79fc15e822b70dce3fa77e39
> Author: Oleksij Rempel <o.rempel@xxxxxxxxxxxxxx>
> Date:   Sat Nov 9 15:11:18 2019 +0000
> 
>     can: j1939: j1939_can_recv(): add priv refcounting
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=15a7ec76e00000
> start commit:   de620fb9 Merge branch 'for-5.4-fixes' of git://git.kernel...
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=f9ff8f11e66c1fb1
> dashboard link: https://syzkaller.appspot.com/bug?extid=db4869ba599c0de9b13e
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=113e0d72e00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=136aa6e8e00000
> 
> If the result looks correct, please mark the bug fixed by replying with:

#syz fix: can: j1939: j1939_can_recv(): add priv refcounting

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