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

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On Fri, Apr 24, 2020 at 05:23:03PM -0700, syzbot wrote:
> syzbot suspects this bug was fixed by commit:
> 
> commit ca4463bf8438b403596edd0ec961ca0d4fbe0220
> Author: Eric Biggers <ebiggers@xxxxxxxxxx>
> Date:   Sun Mar 22 03:43:04 2020 +0000
> 
>     vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console
> 
> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=11594fc8100000
> start commit:   07c4b9e9 Merge tag 'scsi-fixes' of git://git.kernel.org/pu..
> git tree:       upstream
> kernel config:  https://syzkaller.appspot.com/x/.config?x=79f79de2a27d3e3d
> dashboard link: https://syzkaller.appspot.com/bug?extid=9af6d43c1beabec8fd05
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=113886fae00000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1263520ae00000
> 
> If the result looks correct, please mark the bug fixed by replying with:
> 
> #syz fix: vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console
> 
> For information about bisection process see: https://goo.gl/tpsmEJ#bisection

#syz fix: vt: vt_ioctl: fix VT_DISALLOCATE freeing in-use virtual console



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