linux-kernel - Re: [PATCH v2] w1: do not unlock unheld list_mutex in __w1_remove_master

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Date:	Wed, 07 May 2014 03:51:06 +0400
From:	zbr@...emap.net
To:	David Fries <david@...es.net>,
	Alexey Khoroshilov <khoroshilov@...ras.ru>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"ldv-project@...uxtesting.org" <ldv-project@...uxtesting.org>
Subject: Re: [PATCH v2] w1: do not unlock unheld list_mutex in __w1_remove_master_device()

Hi everyone

07.05.2014, 03:49, "David Fries" <David@...es.net>:
> Acked-by: David Fries <david@...es.net>
>
> On Wed, May 07, 2014 at 01:26:04AM +0400, Alexey Khoroshilov wrote:
>
>>  w1_process_callbacks() expects to be called with dev->list_mutex held,
>>  but it is the fact only in w1_process(). __w1_remove_master_device()
>>  calls w1_process_callbacks() after it releases list_mutex.
>>
>>  The patch fixes __w1_remove_master_device() to acquire list_mutex
>>  for w1_process_callbacks().
>>
>>  Found by Linux Driver Verification project (linuxtesting.org).
>>
>>  Signed-off-by: Alexey Khoroshilov <khoroshilov@...ras.ru>

Thanks for this fix
Acked-by: Evgeniy Polyakov <zbr@...emap.net>
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