All of lore.kernel.org
 help / color / mirror / Atom feed
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, 01 Feb 2016 20:42:53 +0000	[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>

WARNING: multiple messages have this Message-ID (diff)
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>

  reply	other threads:[~2016-02-01 20:42 UTC|newest]

Thread overview: 4+ 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  7:05 ` DingXiang
2016-02-01 20:42 ` Greg KH [this message]
2016-02-01 20:42   ` Greg KH

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20160201204253.GD18440@kroah.com \
    --to=greg@kroah.com \
    --cc=dingxiang@huawei.com \
    --cc=kernel-janitors@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=snitzer@redhat.com \
    --cc=stable@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.