linux-kernel - Re: general protection fault in n_tty_flush

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Message-ID: <88227098-aac7-1084-9cd6-04744fb992bd@I-love.SAKURA.ne.jp>
Date:   Thu, 17 May 2018 19:45:33 +0900
From:   Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:     syzbot <syzbot+083228748980909eb453@...kaller.appspotmail.com>,
        gregkh@...uxfoundation.org, jslaby@...e.com,
        syzkaller-bugs@...glegroups.com
Cc:     linux-kernel@...r.kernel.org
Subject: Re: general protection fault in n_tty_flush_buffer

This will be essentially same with below one.
ioctl(TIOCVHANGUP) versus ioctl(TCSETS) can race.

#syz dup: KASAN: user-memory-access Write in n_tty_set_termios