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From: Al Viro <viro@zeniv.linux.org.uk>
To: Xiaoming Ni <nixiaoming@huawei.com>
Cc: bbrezillon@kernel.org, richard@nod.at, dilinger@queued.net,
	linux-kernel@vger.kernel.org, daniel.santos@pobox.com,
	linux-mtd@lists.infradead.org, houtao1@huawei.com,
	dwmw2@infradead.org
Subject: Re: [PATCH] jffs2:freely allocate memory when parameters are invalid
Date: Fri, 20 Sep 2019 12:43:36 +0100	[thread overview]
Message-ID: <20190920114336.GM1131@ZenIV.linux.org.uk> (raw)
In-Reply-To: <1568962478-126260-1-git-send-email-nixiaoming@huawei.com>

On Fri, Sep 20, 2019 at 02:54:38PM +0800, Xiaoming Ni wrote:
> Use kzalloc() to allocate memory in jffs2_fill_super().
> Freeing memory when jffs2_parse_options() fails will cause
> use-after-free and double-free in jffs2_kill_sb()

... so we are not freeing it there.  What's the problem?

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  reply	other threads:[~2019-09-20 11:46 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-20  6:54 [PATCH] jffs2:freely allocate memory when parameters are invalid Xiaoming Ni
2019-09-20 11:43 ` Al Viro [this message]
2019-09-20 12:21   ` Xiaoming Ni
2019-09-20 12:45     ` Al Viro
2019-09-20 12:54       ` Al Viro
2019-09-20 14:13         ` Xiaoming Ni
2019-09-20 14:38           ` Richard Weinberger
2019-09-21  1:24             ` Hou Tao
2019-09-21 15:37               ` Richard Weinberger
2019-09-20 15:28           ` Al Viro

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