linux-kernel - Re: Re: [PATCH V2 0/2] [BUGFIX] virtio/console: Fix two bugs of splice

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Date:	Mon, 22 Jul 2013 10:05:26 +0900
From:	Yoshihiro YUNOMAE <yoshihiro.yunomae.ez@...achi.com>
To:	Amit Shah <amit.shah@...hat.com>
Cc:	linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, virtualization@...ts.linux-foundation.org,
	Hidehiro Kawai <hidehiro.kawai.ez@...achi.com>,
	yrl.pp-manager.tt@...achi.com,
	Masami Hiramatsu <masami.hiramatsu.pt@...achi.com>
Subject: Re: Re: [PATCH V2 0/2] [BUGFIX] virtio/console: Fix two bugs of
 splice_write

Hi Amit,

Sorry for the late reply.

(2013/07/19 19:05), Amit Shah wrote:
> On (Fri) 19 Jul 2013 [18:19:51], Yoshihiro YUNOMAE wrote:
>> Hi,
>>
>> This patch set fixes two bugs of splice_write in the virtio-console driver.
>>
>> [BUG1] Although pipe->nrbufs is empty, the driver tries to do splice_write.
>>         => This induces oops in sg_init_table().
>>
>> [BUG2] No lock for competition of splice_write.
>>         => This induces oops in splice_from_pipe_feed() by bug of any user
>>            application.
>>
>> These reports are written in each patch.
>>
>> Changes in V2:
>> - Fix a locking problem for error
>>
>> Thanks!
>
> Reviewed-by: Amit Shah <amit.shah@...hat.com>

Thank you for reviewing this patch set.

> For the patches to be picked up in the stable trees, you need to
> include CC: <stable@...r.kernel.org> in the sign-off area of the
> patches, just cc'ing in the patch posting doesn't help.  See
> Documentation/stable_kernel_rules.txt.
>
> Can you submit a v3 with that change, and also add my reviewed-by
> line?

Sure. I'll add stable@ line, your reviewed-by line, and Masami's
reviewed-by line in sign-off area for each patch.

Thanks,
Yoshihiro YUNOMAE

-- 
Yoshihiro YUNOMAE
Software Platform Research Dept. Linux Technology Center
Hitachi, Ltd., Yokohama Research Laboratory
E-mail: yoshihiro.yunomae.ez@...achi.com


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