Bug#538332: linux-2.6: [x86] Null pointer dereference in hrtick_start_fair.

[Alok Kataria <akataria@vmware.com>]

Package: linux-2.6
Version: Debian 5.0r2

Hi,

There was a regression on mainline kernel due to my patches for tsc
unification. 
It seems lenny has picked-up those unification patches but didn't pick
the fix for that regression. 

I checked sources for Debian5 5.0r2 and its missing the fix.

The commit details for the fix are

commit 3d0decc4f49e8645cd6369b02ed076bebd3d61ad
Author: Ingo Molnar <mingo@elte.hu>
Date:   Fri Jul 11 15:09:15 2008 +0200

    x86: fix tsc unification buglet with ftrace and stackprotector


Please include it in the next security update. 
We have seen null pointer de-reference in hrtick_start_fair during
bootup, similar to one mentioned in the commit details.

Thanks.