linux-kernel - Re: [patch 1/2] drivers/virt: fix the error handling in ioctl

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Date:	Thu, 14 Jul 2016 14:59:49 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Dan Carpenter <dan.carpenter@...cle.com>
Cc:	Dave Hansen <dave.hansen@...ux.intel.com>,
	Timur Tabi <timur@...escale.com>, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: Re: [patch 1/2] drivers/virt: fix the error handling in
 ioctl_dtprop()


* Dan Carpenter <dan.carpenter@...cle.com> wrote:

> If strndup_user() user fails then it returns an error pointer and we
> pass that to kfree() which causes an oops.

Hm, in addition to this fix wouldn't it be better to not crash if kfree() gets 
passed an error pointer? Would that have changed the pattern of this particular 
bug?

Thanks,

	Ingo