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
Date: Wed, 30 Oct 2013 11:24:30 +0900 [thread overview]
Message-ID: <20131030022430.GA17013@bbox> (raw)
In-Reply-To: <cc16130b4e23207971139eff313a4ec71f51c187.1383087326.git.rashika.kheria@gmail.com>
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
next prev parent reply other threads:[~2013-10-30 2:24 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20131019110539.GA25167@gmail.com>
2013-10-28 11:47 ` [PATCH v5 1/3] Staging: zram: Fix access of NULL pointer Rashika Kheria
2013-10-28 11:48 ` [PATCH v5 3/3] Staging: zram: Fix decrement of variable by calling bdput() Rashika Kheria
2013-10-28 12:17 ` [PATCH v5 2/3] Staging: zram: Fix variable dereferenced before check Rashika Kheria
2013-10-28 12:21 ` [PATCH v6 1/3] Staging: zram: Fix access of NULL pointer Rashika Kheria
2013-10-28 12:23 ` [PATCH v6 2/3] Staging: zram: Fix variable dereferenced before check Rashika Kheria
2013-10-29 0:44 ` Minchan Kim
2013-10-28 12:24 ` [PATCH v6 3/3] Staging: zram: Fix decrement of variable by calling bdput() Rashika Kheria
2013-10-29 0:47 ` Minchan Kim
2013-10-28 13:45 ` [PATCH v6 1/3] Staging: zram: Fix access of NULL pointer Weijie Yang
[not found] ` <CAMpEsFHO5yrwxK9q=hQtOxwC=0_p4BznBGjvomPgFZogwXABRA@mail.gmail.com>
2013-10-28 15:09 ` Weijie Yang
2013-10-29 0:43 ` Minchan Kim
2013-10-29 23:10 ` [PATCH v7 " Rashika Kheria
2013-10-29 23:12 ` [PATCH v7 2/3] Staging: zram: Fix decrement of variable by calling bdput() Rashika Kheria
2013-10-30 2:33 ` Minchan Kim
2013-10-29 23:15 ` [PATCH v7 3/3] Staging: zram: Fix variable dereferenced before check Rashika Kheria
2013-10-30 2:35 ` Minchan Kim
2013-10-30 10:44 ` Jerome Marchand
2013-10-30 2:24 ` Minchan Kim [this message]
2013-10-30 2:36 ` [PATCH v7 1/3] Staging: zram: Fix access of NULL pointer Minchan Kim
2013-10-30 10:42 ` Jerome Marchand
2013-10-30 13:06 ` [PATCH v8 " Rashika Kheria
2013-10-30 13:10 ` [PATCH v8 2/3] Staging: zram: Fix decrement of variable by calling bdput() Rashika Kheria
2013-10-31 9:42 ` Weijie Yang
2013-10-30 13:13 ` [PATCH v8 3/3] Staging: zram: Fix variable dereferenced before check Rashika Kheria
2013-10-30 16:36 ` Greg Kroah-Hartman
2013-10-31 11:56 ` [PATCH v9 1/2] Staging: zram: Fix access of NULL pointer Rashika Kheria
2013-10-31 11:58 ` [PATCH v9 2/2] Staging: zram: Fix decrement of variable by calling bdput() Rashika Kheria
2013-11-01 2:00 ` Minchan Kim
2013-11-01 8:54 ` Jerome Marchand
2013-11-01 14:13 ` Rashika Kheria
2013-11-01 14:06 ` [PATCH v10] Staging: zram: Fix memory leak by refcount mismatch Rashika Kheria
2013-11-10 15:45 ` Greg Kroah-Hartman
2013-11-10 15:56 ` [OPW kernel] " Rashika Kheria
2013-11-10 16:10 ` Greg Kroah-Hartman
2013-11-10 16:14 ` Rashika Kheria
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