From: "Theodore Ts'o" <tytso@mit.edu>
To: Barret Rhoden <brho@google.com>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>,
syzbot+f584efa0ac7213c226b7@syzkaller.appspotmail.com,
Jan Kara <jack@suse.cz>,
stable@vger.kernel.org, linux-ext4@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] ext4: fix use-after-free race with debug_want_extra_isize
Date: Thu, 25 Apr 2019 11:57:45 -0400 [thread overview]
Message-ID: <20190425155745.GB4739@mit.edu> (raw)
In-Reply-To: <20190418155937.164947-1-brho@google.com>
On Thu, Apr 18, 2019 at 11:59:37AM -0400, Barret Rhoden wrote:
> When remounting with debug_want_extra_isize, we were not performing the
> same checks that we do during a normal mount. That allowed us to set a
> value for s_want_extra_isize that reached outside the s_inode_size.
>
> Reported-by: syzbot+f584efa0ac7213c226b7@syzkaller.appspotmail.com
> Reviewed-by: Jan Kara <jack@suse.cz>
> Signed-off-by: Barret Rhoden <brho@google.com>
> Cc: stable@vger.kernel.org # 4.14.111
Applied, thanks.
- Ted
prev parent reply other threads:[~2019-04-25 15:58 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-04-15 21:19 [PATCH] ext4: fix use-after-free race with debug_want_extra_isize Barret Rhoden
2019-04-18 11:55 ` Jan Kara
2019-04-18 15:59 ` [PATCH v2] " Barret Rhoden
2019-04-18 19:00 ` Andreas Dilger
2019-04-25 15:57 ` Theodore Ts'o [this message]
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