linux-kernel - Re: [patch] dpt_i20: several use after free issues

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Message-Id: <20100315134526.0b2e3637.akpm@linux-foundation.org>
Date:	Mon, 15 Mar 2010 13:45:26 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Dan Carpenter <error27@...il.com>
Cc:	Adaptec OEM Raid Solutions <aacraid@...ptec.com>,
	"James E.J. Bottomley" <James.Bottomley@...e.de>,
	Yang Hongyang <yanghy@...fujitsu.com>,
	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>,
	Alan Cox <alan@...ux.intel.com>, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org
Subject: Re: [patch] dpt_i20: several use after free issues

On Mon, 15 Mar 2010 11:26:56 +0300
Dan Carpenter <error27@...il.com> wrote:

> adpt_i2o_delete_hba() calls kfree() so we have to save "pHba->next"
> before calling it.  Also inside adpt_i2o_delete_hba() itself, there
> was another use after free bug which I fixed by moving the kfree() 
> down a line.

erk.  This code should be crashing most gruesomely.  I wonder why it
doesn't.

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