Re: BUG: unable to handle kernel NULL pointer dereference in generic_perform_write (2)

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To: syzbot <syzbot+bca9799bf129256190da@xxxxxxxxxxxxxxxxxxxxxxxxx>
Subject: Re: BUG: unable to handle kernel NULL pointer dereference in generic_perform_write (2)
From: "Theodore Y. Ts'o" <tytso@xxxxxxx>
Date: Wed, 10 Jun 2020 18:07:10 -0400
Cc: adilger.kernel@xxxxxxxxx, akpm@xxxxxxxxxxxxxxxxxxxx, dan.j.williams@xxxxxxxxx, jack@xxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, syzkaller-bugs@xxxxxxxxxxxxxxxx
In-reply-to: <00000000000016a67305a33a11f7@google.com>
References: <00000000000016a67305a33a11f7@google.com>

#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git 5749fe5af3db176659978718ddaecebb450cdb6b

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