From: Peilin Ye <yepeilin.cs@gmail.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>, Hillf Danton <hdanton@sina.com>,
Jan Kara <jack@suse.cz>,
Johannes Thumshirn <johannes.thumshirn@wdc.com>,
syzkaller-bugs@googlegroups.com, linux-kernel@vger.kernel.org,
Ming Lei <ming.lei@redhat.com>,
linux-block@vger.kernel.org,
linux-kernel-mentees@lists.linuxfoundation.org,
Christoph Hellwig <hch@lst.de>,
Konstantin Khlebnikov <koct9i@gmail.com>
Subject: Re: [Linux-kernel-mentees] [PATCH] block: Fix use-after-free in bdev_del_partition()
Date: Thu, 3 Sep 2020 03:23:57 -0400 [thread overview]
Message-ID: <20200903072357.GA623968@PWN> (raw)
In-Reply-To: <20200903065950.GA19012@lst.de>
On Thu, Sep 03, 2020 at 08:59:50AM +0200, Christoph Hellwig wrote:
> On Thu, Sep 03, 2020 at 02:55:34AM -0400, Peilin Ye wrote:
> > In bdev_del_partition(), `part` is being looked up outside the critical
> > section. This is causing bdev_del_partition() to delete the same partition
> > more than once. Fix it by reverting commit cddae808aeb7.
>
> We've already fix the problem properly:
>
> https://git.kernel.dk/cgit/linux-block/commit/?h=block-5.9&id=08fc1ab6d748ab1a690fd483f41e2938984ce353
Ah, I searched linux-kernel but didn't see your patch, sorry about
that. I should have searched linux-block too.
Thank you,
Peilin
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prev parent reply other threads:[~2020-09-03 7:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <000000000000520ffc05ae2f4fee@google.com>
2020-09-03 6:55 ` [Linux-kernel-mentees] [PATCH] block: Fix use-after-free in bdev_del_partition() Peilin Ye
2020-09-03 6:59 ` Christoph Hellwig
2020-09-03 7:23 ` Peilin Ye [this message]
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