linux-kernel - Re: [PATCH][RESEND] staging: zram: fix invalid memory references during disk write

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Date:	Tue, 8 Jan 2013 14:00:27 -0800
From:	Nitin Gupta <ngupta@...are.org>
To:	Greg KH <greg@...ah.com>
Cc:	Jerome Marchand <jmarchan@...hat.com>,
	Minchan Kim <minchan.kim@...il.com>,
	Seth Jennings <sjenning@...ux.vnet.ibm.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
	Dan Carpenter <dan.carpenter@...cle.com>,
	Sam Hansen <solid.se7en@...il.com>,
	Linux Driver Project <devel@...uxdriverproject.org>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH][RESEND] staging: zram: fix invalid memory references
 during disk write

On Fri, Jan 4, 2013 at 12:25 PM, Nitin Gupta <ngupta@...are.org> wrote:
> On Wed, Jan 2, 2013 at 8:53 AM, Nitin Gupta <ngupta@...are.org> wrote:
>> Fixes a bug introduced by commit c8f2f0db1 ("zram: Fix handling
>> of incompressible pages") which caused invalid memory references
>> during disk write. Invalid references could occur in two cases:
>>  - Incoming data expands on compression: In this case, reference was
>> made to kunmap()'ed bio page.
>>  - Partial (non PAGE_SIZE) write with incompressible data: In this
>> case, reference was made to a kfree()'ed buffer.
>>
>> Fixes bug 50081:
>> https://bugzilla.kernel.org/show_bug.cgi?id=50081
>>
>
> Greg: can you please add this to staging? It fixes an important issue
> and is tested by many users.
>


It's still not in staging. Any reason why you want to accept this patch?
Of course, this is the last reminder, won't bother you again.

Thanks,
Nitin
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