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/*
 * Header providing constants for bcm2835 pinctrl bindings.
 *
 * Copyright (C) 2015 Stefan Wahren <stefan.wahren@i2se.com>
 *
 * The code contained herein is licensed under the GNU General Public
 * License. You may obtain a copy of the GNU General Public License
 * Version 2 at the following locations:
 *
 * http://www.opensource.org/licenses/gpl-license.html
 * http://www.gnu.org/copyleft/gpl.html
 */

#ifndef __DT_BINDINGS_PINCTRL_BCM2835_H__
#define __DT_BINDINGS_PINCTRL_BCM2835_H__

/* brcm,function property */
#define BCM2835_FSEL_GPIO_IN	0
#define BCM2835_FSEL_GPIO_OUT	1
#define BCM2835_FSEL_ALT5	2
#define BCM2835_FSEL_ALT4	3
#define BCM2835_FSEL_ALT0	4
#define BCM2835_FSEL_ALT1	5
#define BCM2835_FSEL_ALT2	6
#define BCM2835_FSEL_ALT3	7

/* brcm,pull property */
#define BCM2835_PUD_OFF		0
#define BCM2835_PUD_DOWN	1
#define BCM2835_PUD_UP		2

#endif /* __DT_BINDINGS_PINCTRL_BCM2835_H__ */
8 /tools/testing/selftests/powerpc/pmu/lib.c parent566cf877a1fcb6d6dc0126b076aad062054c2637 (diff)
perf/core: Fix use-after-free bug
Dmitry reported a KASAN use-after-free on event->group_leader. It turns out there's a hole in perf_remove_from_context() due to event_function_call() not calling its function when the task associated with the event is already dead. In this case the event will have been detached from the task, but the grouping will have been retained, such that group operations might still work properly while there are live child events etc. This does however mean that we can miss a perf_group_detach() call when the group decomposes, this in turn can then lead to use-after-free. Fix it by explicitly doing the group detach if its still required. Reported-by: Dmitry Vyukov <dvyukov@google.com> Tested-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: stable@vger.kernel.org # v4.5+ Cc: syzkaller <syzkaller@googlegroups.com> Fixes: 63b6da39bb38 ("perf: Fix perf_event_exit_task() race") Link: http://lkml.kernel.org/r/20170126153955.GD6515@twins.programming.kicks-ass.net Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'tools/testing/selftests/powerpc/pmu/lib.c')