From: Greg KH <greg@kroah.com>
To: DingXiang <dingxiang@huawei.com>
Cc: snitzer@redhat.com, stable@vger.kernel.org,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org
Subject: Re: [PATCH] [dm]fix NULL pointer in dm_exception_store_create() when create dm device
Date: Mon, 1 Feb 2016 12:42:53 -0800 [thread overview]
Message-ID: <20160201204253.GD18440@kroah.com> (raw)
In-Reply-To: <1454310358-755-1-git-send-email-dingxiang@huawei.com>
On Mon, Feb 01, 2016 at 03:05:58PM +0800, DingXiang wrote:
> In some conditions(such as umount fs failed),origin path or origin bdev or both of the two is same
> as cow's.If this happens, origin dev will be freed when get cow dev in function "dm_get_device" ,
> then "s->origin->dev" which used by "dm_exception_store_create" will be a NULL pointer.
>
> Signed-off-by:Ding Xiang <dingxiang@huawei.com>
> ---
> drivers/md/dm-snap.c | 10 ++++++++++
> 1 files changed, 10 insertions(+), 0 deletions(-)
<formletter>
This is not the correct way to submit patches for inclusion in the
stable kernel tree. Please read Documentation/stable_kernel_rules.txt
for how to do this properly.
</formletter>
prev parent reply other threads:[~2016-02-01 20:42 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-01 7:05 [PATCH] [dm]fix NULL pointer in dm_exception_store_create() when create dm device DingXiang
2016-02-01 20:42 ` Greg KH [this message]
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