From: David S. Miller <davem@davemloft.net>
Date: Mon, 15 Oct 2012 00:59:40 +0000 (-0700)
Subject: sparc64: Like x86 we should check current->mm during perf backtrace generation.
X-Git-Tag: v3.2.33~93
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6471fbc6eb71dd615075f58576ad813697700873;p=pandora-kernel.git

sparc64: Like x86 we should check current->mm during perf backtrace generation.

[ Upstream commit 08280e6c4c2e8049ac61d9e8e3536ec1df629c0d ]

If the MM is not active, only report the top-level PC.  Do not try to
access the address space.

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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