syzbot has bisected this issue to:
commit 988d0763361bb65690d60e2bc53a6b72777040c3
Author: Tetsuo Handa <penguin-kernel@xxxxxxxxxxxxxxxxxxx>
Date: Sun Sep 27 11:46:30 2020 +0000
vt_ioctl: make VT_RESIZEX behave like VT_RESIZE
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15633759d00000
start commit: d2b6f8a1 Merge tag 'xfs-5.13-merge-3' of git://git.kernel...
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=17633759d00000
console output: https://syzkaller.appspot.com/x/log.txt?x=13633759d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=53fdf14defd48c56
dashboard link: https://syzkaller.appspot.com/bug?extid=1f29e126cf461c4de3b3
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16d9ff43d00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10981693d00000
Reported-by: syzbot+1f29e126cf461c4de3b3@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 988d0763361b ("vt_ioctl: make VT_RESIZEX behave like VT_RESIZE")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
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