From: P J P <ppandit@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: vincent.weaver@maine.edu
Subject: About perf,arm -- oops in validate_event
Date: Tue, 20 Aug 2013 15:33:00 +0530 (IST) [thread overview]
Message-ID: <alpine.LFD.2.03.1308201522230.15482@erqung.pbz> (raw)
Hello,
-> https://lkml.org/lkml/2013/8/7/259
I wanted to confirm if this above fix should also go into ARM64 build Or is
ARM64 platform not vulnerable?
===
$ git diff
diff --git a/arch/arm64/kernel/perf_event.c b/arch/arm64/kernel/perf_event.c
index 9ba33c4..cbed82f 100644
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -317,6 +317,9 @@ validate_event(struct pmu_hw_events *hw_events,
struct hw_perf_event fake_event = event->hw;
struct pmu *leader_pmu = event->group_leader->pmu;
+ if (is_software_event(event))
+ return 1;
+
if (event->pmu != leader_pmu || event->state <= PERF_EVENT_STATE_OFF)
return 1;
===
Thank you.
--
Prasad J Pandit / Red Hat Security Response Team
DB7A 84C5 D3F9 7CD1 B5EB C939 D048 7860 3655 602B
next reply other threads:[~2013-08-20 10:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-20 10:03 P J P [this message]
2013-08-20 10:39 ` Catalin Marinas
2013-08-20 14:42 ` Vince Weaver
2013-08-20 16:15 ` Catalin Marinas
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