[<prev] [next>] [<thread-prev] [day] [month] [year] [list]
Message-ID: <1d1d83df-c1d1-22b0-72a0-291a68d0c328@wanadoo.fr>
Date: Thu, 14 Sep 2023 07:28:39 +0200
From: Christophe JAILLET <christophe.jaillet@...adoo.fr>
To: Kent Overstreet <kent.overstreet@...ux.dev>
Cc: Brian Foster <bfoster@...hat.com>, linux-kernel@...r.kernel.org,
kernel-janitors@...r.kernel.org,
Kent Overstreet <kent.overstreet@...il.com>,
linux-bcachefs@...r.kernel.org
Subject: Re: [PATCH 1/2] bcachefs: Fix a potential in the error handling path
of use-after-free inbch2_dev_add()
Le 14/09/2023 à 01:01, Kent Overstreet a écrit :
> On Wed, Sep 13, 2023 at 06:44:08PM +0200, Christophe JAILLET wrote:
>> If __bch2_dev_attach_bdev() fails, bch2_dev_free() is called twice.
>> Once here and another time in the error handling path.
>>
>> This leads to several use-after-free.
>>
>> Remove the redundant call and only rely on the error handling path.
> Thanks, both applied
If not too late, it is more a double-free than a use-after-free.
And I messed up the ordering of the words in the subject.
Sorry about that.
CJ
Powered by blists - more mailing lists