From mboxrd@z Thu Jan  1 00:00:00 1970
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Date: Wed, 30 Oct 2013 11:24:30 +0900
From: Minchan Kim <minchan@kernel.org>
To: Rashika Kheria <rashika.kheria@gmail.com>
Cc: opw-kernel@googlegroups.com,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiang Liu <jiang.liu@huawei.com>,
	Nitin Gupta <ngupta@vflare.org>,
	Jerome Marchand <jmarchand@redhat.com>,
	linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH v7 1/3] Staging: zram: Fix access of NULL pointer
Message-ID: <20131030022430.GA17013@bbox>
References: <20131019110539.GA25167@gmail.com>
 <cc16130b4e23207971139eff313a4ec71f51c187.1383087326.git.rashika.kheria@gmail.com>
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On Wed, Oct 30, 2013 at 04:40:54AM +0530, Rashika Kheria wrote:
> This patch fixes the bug in reset_store caused by accessing NULL pointer.
> 
> The bdev gets its value from bdget_disk() which could fail when memory
> pressure is severe and hence can return NULL because allocation of
> inode in bdget could fail.
> 
> Hence, this patch introduces a check for bdev to prevent reference to a
> NULL pointer in the later part of the code. It also removes unnecessary
> check of bdev for fsync_bdev().
> 
> Cc: stable@vger.kernel.org
> Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Acked-by: Minchan Kim <minchan@kernel.org>

-- 
Kind regards,
Minchan Kim