This is a note to let you know that I've just added the patch titled
arm64: perf: fix event validation for software group leaders
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
arm64-perf-fix-event-validation-for-software-group-leaders.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From ee7538a008a45050c8f706d38b600f55953169f9 Mon Sep 17 00:00:00 2001
From: Will Deacon <will.deacon@xxxxxxx>
Date: Tue, 20 Aug 2013 11:47:40 +0100
Subject: arm64: perf: fix event validation for software group leaders
From: Will Deacon <will.deacon@xxxxxxx>
commit ee7538a008a45050c8f706d38b600f55953169f9 upstream.
This is a port of c95eb3184ea1 ("ARM: 7809/1: perf: fix event validation
for software group leaders") to arm64, which fixes a panic in the arm64
perf backend found as a result of Vince's fuzzing tool.
Signed-off-by: Will Deacon <will.deacon@xxxxxxx>
Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/arm64/kernel/perf_event.c | 3 +++
1 file changed, 3 insertions(+)
--- a/arch/arm64/kernel/perf_event.c
+++ b/arch/arm64/kernel/perf_event.c
@@ -322,6 +322,9 @@ validate_event(struct pmu_hw_events *hw_
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;
Patches currently in stable-queue which might be from will.deacon@xxxxxxx are
queue-3.10/arm64-perf-fix-array-out-of-bounds-access-in-armpmu_map_hw_event.patch
queue-3.10/arm64-perf-fix-event-validation-for-software-group-leaders.patch
--
To unsubscribe from this list: send the line "unsubscribe stable" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html