linux-kernel - Re: WARNING in tty_set

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Date:   Sun, 08 Dec 2019 22:20:01 -0800
From:   syzbot <syzbot+a950165cbb86bdd023a4@...kaller.appspotmail.com>
To:     gregkh@...uxfoundation.org, gustavo@...ovan.org,
        johan.hedberg@...il.com, jslaby@...e.com,
        linux-bluetooth@...r.kernel.org, linux-kernel@...r.kernel.org,
        loic.poulain@...el.com, marcel@...tmann.org, mhjungk@...il.com,
        syzkaller-bugs@...glegroups.com, torvalds@...ux-foundation.org,
        vdronov@...hat.com
Subject: Re: WARNING in tty_set_termios

syzbot suspects this bug was fixed by commit:

commit b36a1552d7319bbfd5cf7f08726c23c5c66d4f73
Author: Vladis Dronov <vdronov@...hat.com>
Date:   Tue Jul 30 09:33:45 2019 +0000

     Bluetooth: hci_uart: check for missing tty operations

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=10b20aeae00000
start commit:   66c56cfa Merge tag 'remove-dma_zalloc_coherent-5.0' of git..
git tree:       upstream
kernel config:  https://syzkaller.appspot.com/x/.config?x=b05cfdb4ee8ab9b2
dashboard link: https://syzkaller.appspot.com/bug?extid=a950165cbb86bdd023a4
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=121cee07400000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=16fdaed8c00000

If the result looks correct, please mark the bug fixed by replying with:

#syz fix: Bluetooth: hci_uart: check for missing tty operations

For information about bisection process see: https://goo.gl/tpsmEJ#bisection