From: Peter Zijlstra <peterz@infradead.org>
Date: Thu, 10 Sep 2015 09:58:27 +0000 (+0200)
Subject: perf/x86/intel: Fix constraint access
X-Git-Tag: omap-for-v4.3/fixes-rc5~126^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ebfb4988f0378e2ac3b4a0aa1ea20d724293f392;p=pandora-kernel.git

perf/x86/intel: Fix constraint access

Sasha reported that we can get here with .idx==-1, and
cpuc->event_constraints unallocated.

Suggested-by: Stephane Eranian <eranian@google.com>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: <stable@vger.kernel.org>
Fixes: b371b5943178 ("perf/x86: Fix event/group validation")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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