Messages in this thread | | | Date | Tue, 18 Dec 2012 23:21:28 -0800 | From | Nitin Gupta <> | Subject | Re: zram: fix invalid memory references during disk write |
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On 12/18/2012 07:49 PM, Greg KH wrote: > 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@linuxfoundation.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@vger.kernel.org> # staging-next: 37b51fd: zram: factor-out >>>> # zram_decompress_page() function >>>> Signed-off-by: Nitin Gupta <ngupta@vflare.org> >>>> Reported-by: Mihail Kasadjikov <hamer.mk@gmail.com> >>>> Reported-by: Tomas M <tomas@slax.org> >>>> Reviewed-by: Minchan Kim <minchan@kernel.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. >
Then please apply to 3.7.
Nitin
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