linux-kernel - Re: [PATCH] carl9170: Fix mismatch in carl9170_op_set

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Message-Id: <201108232356.22472.chunkeey@googlemail.com>
Date:	Tue, 23 Aug 2011 23:56:22 +0200
From:	Christian Lamparter <chunkeey@...glemail.com>
To:	Alexey Khoroshilov <khoroshilov@...ras.ru>
Cc:	"John W. Linville" <linville@...driver.com>,
	linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org, ldv-project@...ras.ru
Subject: Re: [PATCH] carl9170: Fix mismatch in carl9170_op_set_key mutex lock-unlock

On Tuesday, August 23, 2011 10:44:32 PM Alexey Khoroshilov wrote:
> If is_main_vif(ar, vif) reports that we have to fall back
> to software encryption, we goto err_softw; before locking ar->mutex.
> As a result, we have unprotected call to carl9170_set_operating_mode
> and unmatched mutex_unlock.
> 
> The patch fix the issue by adding mutex_lock before goto.
> 
> Found by Linux Driver Verification project (linuxtesting.org).
> 
> Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
Cc: <stable@...nel.org>
Acked-By: Christian Lamparter <chunkeey@...glemail.com>
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