Re: Request security fix in -stable (upstream 2c33645d366d)

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On Wed, 2016-07-06 at 15:13 -0700, Kevin Christopher wrote:
> Stable maintainers -
> 
> Have a request to merge an upstream security fix into stable branches. 
> The change avoids a userlevel-induceable kernel #GP in perf/x86 when a 
> hypervisor emulates older perfmon. The issue was originally seen and 
> accepted as an upstream patch proposed by Amazon in 2015; the security 
> implication when on a VMware hypervisor was recently reported.
> 
> Upstream commit:
> (commit) 2c33645d366d13b969d936b68b9f4875b1fdddea
> (subject) perf/x86: Honor the architectural performance monitoring version
> 
> A second commit fixes a trivial build issue introduced by the above commit:
> (commit) 6d6f2833bfbf296101f9f085e10488aef2601ba5
> (subject) perf/x86: Fix undefined shift on 32-bit kernels
[...]

Belatedly queued these up for 3.16.

Ben.

-- 
Ben Hutchings
compatible: Gracefully accepts erroneous data from any source

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