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To: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
From: Michael Ellerman <patch-notifications@ellerman.id.au>
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>,
 linuxppc-dev@lists.ozlabs.org
Subject: Re: [v2] powerpc/perf: Fix kernel address leak to userspace via BHRB
 buffer
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Date: Thu, 29 Mar 2018 01:13:27 +1100 (AEDT)
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On Wed, 2018-03-21 at 11:40:25 UTC, Madhavan Srinivasan wrote:
> The current Branch History Rolling Buffer (BHRB) code does
> not check for any privilege levels before updating the data
> from BHRB. This leaks kernel addresses to userspace even when
> profiling only with userspace privileges. Add proper checks
> to prevent it.
> 
> Acked-by: Balbir Singh <bsingharora@gmail.com>
> Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/bb19af816025d495376bd76bf6fbcf

cheers