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Message-ID: <20121219034949.GA22281@kroah.com> Date: Tue, 18 Dec 2012 19:49:49 -0800 From: Greg KH <gregkh@...uxfoundation.org> To: Nitin Gupta <ngupta@...are.org> 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>, stable@...r.kernel.org Subject: Re: zram: fix invalid memory references during disk write On Tue, Dec 18, 2012 at 01:12:05PM -0800, Nitin Gupta wrote: > On Tue, Dec 11, 2012 at 10:27 AM, Greg KH <gregkh@...uxfoundation.org> wrote: > > On Thu, Nov 29, 2012 at 10:45:09PM -0800, Nitin Gupta 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 > >> > >> Upstream commit ID: c8f2f0d: zram: Fix handling of incompressible pages > >> Apply to versions: 3.6.5, 3.6.6, 3.6.7, 3.6.8 > >> > >> Cc: <stable@...r.kernel.org> # staging-next: 37b51fd: zram: factor-out > >> # zram_decompress_page() function > >> Signed-off-by: Nitin Gupta <ngupta@...are.org> > >> Reported-by: Mihail Kasadjikov <hamer.mk@...il.com> > >> Reported-by: Tomas M <tomas@...x.org> > >> Reviewed-by: Minchan Kim <minchan@...nel.org> > >> --- > >> drivers/staging/zram/zram_drv.c | 39 ++++++++++++++++++++++++--------------- > >> 1 file changed, 24 insertions(+), 15 deletions(-) > > > > This patch fails to apply to 3.6.10: > > > > patching file drivers/staging/zram/zram_drv.c > > Hunk #1 succeeded at 282 (offset 17 lines). > > Hunk #2 FAILED at 286. > > Hunk #3 succeeded at 319 (offset 17 lines). > > Hunk #4 succeeded at 340 (offset 17 lines). > > Hunk #5 succeeded at 353 (offset 17 lines). > > Hunk #6 succeeded at 368 (offset 17 lines). > > Hunk #7 succeeded at 385 (offset 17 lines). > > 1 out of 7 hunks FAILED -- saving rejects to file drivers/staging/zram/zram_drv.c.rej > > > > Please redo this patch and resend it if you wish for it to be applied to > > the 3.6-stable tree. > > > > > > Please apply this patch to stable tree asap. 3.6 is now end-of-life, there will not be any more releases for that kernel series anymore, sorry. greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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