[SRU][Trusty][Xenial][PATCH 0/2] Fixes for lp1658270

Stefan Bader stefan.bader at canonical.com
Mon Feb 6 07:10:06 UTC 2017


On 03.02.2017 18:53, Joseph Salisbury wrote:
> On 02/03/2017 12:28 PM, Thadeu Lima de Souza Cascardo wrote:
>> On Fri, Jan 27, 2017 at 05:08:30PM -0500, Joseph Salisbury wrote:
>>> BugLink: http://bugs.launchpad.net/bugs/1658270
>>>
>>> == SRU Justification ==
>>> Commit 082d4acb9429 in Trusty introduced this bug in Ubuntu-3.13.0-100.147.
>>> The commit was added to Trusty for via a CVE update. 
>>> The bug resulted in some Delphi apps freezing wineserver and leaving it unkillable
>>> as reported in this upstream bug report:
>>> https://bugs.winehq.org/show_bug.cgi?id=41637
>>>
>>> This bug was also introduced into Xenial by the same patch(Xenial commit b56d2a75e1da).
>>>
>>> A patch was submitted upstrem to fix this bug, but it has not landed in mailine as of yet:
>>> https://patchwork.kernel.org/patch/9499897/
>>>
>>> This patch has been tested and resolves this bug.  However, it requires 
>>> mainline commit c164e038eee8 as a prereq in Trusty only.  Commit c164e038eee8 needed to be backported
>>> to Trusty since it was not a clean pick.
>> Will you send this for Vivid and Precise?
>>
>> Cascardo.
> 
> The patch is not needed in Precise since the commit that introduced the
> bug was reverted:
> 
> e5f9f7b0799 Revert "UBUNTU:SAUCE: mm: remove gup_flags FOLL_WRITE games
> from __get_user_pages()"

Yes, the patch got reverted but replaced by one that though it has a different
title, does mostly the same (the one with backport from benh). And I think a
backport of the follow up would be needed there, too (dropping the first hunk).

-Stefan

> 
> 
> However, Vivid does in fact needed it.  There are no prereqs for Vivid
> and the patch(2/2) applies cleanly.  I have a test build for Vivid going
> now just to ensure it is clean.  I'll respond with the build results.
> 
> 
> Joe
> 
> 
> 
> 


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