linux-kernel - Re: [PATCH v3] staging: wilc1000: fix double mutex_unlock on failure path in wilc_wlan

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Message-ID: <20160203230429.GA17828@kroah.com>
Date:	Wed, 3 Feb 2016 15:04:29 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	Alexey Khoroshilov <khoroshilov@...ras.ru>
Cc:	Johnny Kim <johnny.kim@...el.com>, linux-wireless@...r.kernel.org,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org,
	ldv-project@...uxtesting.org
Subject: Re: [PATCH v3] staging: wilc1000: fix double mutex_unlock on failure
 path in wilc_wlan_cleanup()

On Tue, Dec 22, 2015 at 08:39:26PM +0300, Alexey Khoroshilov wrote:
> If hif_read_reg() or hif_write_reg() fail in wilc_wlan_cleanup(),
> it calls release_bus() and continues execution. But it leads to double
> release_bus() call that means double unlock of g_linux_wlan->hif_cs mutex.
> 
> Found by Linux Driver Verification project (linuxtesting.org).
> 
> Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>
> ---
>  drivers/staging/wilc1000/wilc_wlan.c | 5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)

Why is this 'v3'?  What changed from the other versions?  Please always
document it below the --- line so that we have a chance when reviewing
them.

Please fix up and resend with that information.

thanks,

greg k-h