Peter Zijlstra 10addfac96 perf: Fix hotplug splat ...

commit e3703f8cdf upstream.

Drew Richardson reported that he could make the kernel go *boom* when hotplugging
while having perf events active.

It turned out that when you have a group event, the code in
__perf_event_exit_context() fails to remove the group siblings from
the context.

We then proceed with destroying and freeing the event, and when you
re-plug the CPU and try and add another event to that CPU, things go
*boom* because you've still got dead entries there.

Reported-by: Drew Richardson <drew.richardson@arm.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Link: http://lkml.kernel.org/n/tip-k6v5wundvusvcseqj1si0oz0@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>

2014-03-27 13:54:37 -07:00

..

debug

module: add new state MODULE_STATE_UNFORMED.

2013-01-12 13:27:05 +10:30

events

perf: Fix hotplug splat

2014-03-27 13:54:37 -07:00

gcov

gcov: disable CONSTRUCTORS for UML

2011-07-26 16:49:45 -07:00

irq

genirq: Add missing irq_to_desc export for CONFIG_SPARSE_IRQ=n

2014-02-25 08:44:19 -08:00

power

PM / hibernate: Avoid overflow in hibernate_preallocate_memory()

2013-12-06 14:27:57 -08:00

sched

sched: numa: skip inaccessible VMAs

2014-01-09 14:09:31 -08:00

time

time: Fix overflow when HZ is smaller than 60

2014-02-25 08:44:14 -08:00

trace

ring-buffer: Fix first commit on sub-buffer having non-zero delta

2014-02-25 08:44:21 -08:00

.gitignore

…

acct.c

vfs: make path_openat take a struct filename pointer

2012-10-12 20:15:09 -04:00

async.c

async: fix __lowest_in_progress()

2013-01-22 16:21:24 -08:00

audit_tree.c

kernel/audit_tree.c: tree will leak memory when failure occurs in audit_trim_trees()

2013-05-11 13:54:10 -07:00

audit_watch.c

audit: catch possible NULL audit buffers

2013-01-11 14:54:55 -08:00

audit.c

audit: reset audit backlog wait time after error recovery

2014-02-07 16:59:00 -08:00

audit.h

audit: optimize audit_compare_dname_path

2012-10-12 00:32:02 -04:00

auditfilter.c

audit: fix auditfilter.c kernel-doc warnings

2013-01-10 14:35:23 -08:00

auditsc.c

audit: catch possible NULL audit buffers

2013-01-11 14:54:55 -08:00

backtracetest.c

…

bounds.c

memcg: remove direct page_cgroup-to-page pointer

2011-03-23 19:46:28 -07:00

capability.c

Add file_ns_capable() helper function for open-time capability checking

2013-04-26 12:18:20 -07:00

cgroup_freezer.c

cgroup: rename ->create/post_create/pre_destroy/destroy() to ->css_alloc/online/offline/free()

2012-11-19 08:13:38 -08:00

cgroup.c

cgroup: update cgroup_enable_task_cg_lists() to grab siglock

2014-03-27 13:54:19 -07:00

compat.c

x32: fix sigtimedwait

2012-12-26 01:15:03 -05:00

configs.c

kernel/configs.c: include MODULE_*() when CONFIG_IKCONFIG_PROC=n

2011-07-25 20:57:15 -07:00

context_tracking.c

context_tracking: New context tracking susbsystem

2012-11-30 11:40:07 -08:00

cpu_pm.c

kernel/cpu_pm.c: fix various typos

2012-05-31 17:49:27 -07:00

cpu.c

CPU hotplug: provide a generic helper to disable/enable CPU hotplug

2013-06-14 09:41:40 -07:00

cpuset.c

cpuset: Fix memory allocator deadlock

2013-12-13 12:20:49 -08:00

crash_dump.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

cred.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2012-12-18 10:55:28 -08:00

delayacct.c

KVM: Steal time implementation

2011-07-14 12:59:14 +03:00

dma.c

Remove all #inclusions of asm/system.h

2012-03-28 18:30:03 +01:00

elfcore.c

elf coredump: add extended numbering support

2010-03-06 11:26:46 -08:00

exec_domain.c

sys_personality: remove the bogus checks in sys_personality()->__set_personality() path

2010-08-09 20:45:05 -07:00

exit.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace

2012-12-17 15:44:47 -08:00

extable.c

extable: Skip sorting if sorted at build time.

2012-04-19 15:06:55 -07:00

fork.c

mm: fix TLB flush race between migration, and change_protection_range

2014-01-09 14:09:39 -08:00

freezer.c

libata, freezer: avoid block device removal while system is frozen

2014-01-13 10:01:04 -08:00

futex_compat.c

futex: Revert "futex: Mark get_robust_list as deprecated"

2013-02-28 05:38:31 -08:00

futex.c

futex: fix handling of read-only-mapped hugepages

2014-01-07 14:58:26 -08:00

groups.c

userns: Convert in_group_p and in_egroup_p to use kgid_t

2012-05-03 03:29:33 -07:00

hrtimer.c

hrtimer: Add expiry time overflow check in hrtimer_interrupt

2013-05-07 20:08:21 -07:00

hung_task.c

hung task debugging: Inject NMI when hung and going to panic

2012-04-25 12:39:25 +02:00

irq_work.c

irq_work: fix compile failure on tile from missing include

2012-04-13 13:15:16 -04:00

itimer.c

itimer: Use printk_once instead of WARN_ONCE

2012-04-10 11:00:30 +02:00

jump_label.c

jump_label: Export jump_label_rate_limit()

2012-08-06 19:00:35 +03:00

kallsyms.c

vsprintf: fix %ps on non symbols when using kallsyms

2012-05-29 16:22:32 -07:00

kcmp.c

kcmp: include linux/ptrace.h

2012-12-20 17:40:19 -08:00

Kconfig.freezer

…

Kconfig.hz

…

Kconfig.locks

locking: Adjust spin lock inlining Kconfig options

2012-09-13 17:56:13 +02:00

Kconfig.preempt

locking/kconfig: Simplify INLINE_SPIN_UNLOCK usage

2012-03-23 13:18:57 +01:00

kexec.c

PCI: Disable Bus Master only on kexec reboot

2014-01-07 14:58:22 -08:00

kfifo.c

[media] kernel:kfifo: export __kfifo_max_r symbol

2012-04-11 18:24:37 -03:00

kmod.c

usermodehelper: check subprocess_info->path != NULL

2013-05-24 10:23:03 -07:00

kprobes.c

kprobes/x86: Fix to support jprobes on ftrace-based kprobe

2012-09-13 22:52:11 -04:00

ksysfs.c

Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2012-12-11 18:10:49 -08:00

kthread.c

kthread: Prevent unpark race which puts threads on the wrong cpu

2013-04-25 12:51:09 -07:00

latencytop.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

lglock.c

brlocks/lglocks: turn into functions

2012-05-29 23:28:41 -04:00

lockdep_internals.h

lockdep: No need to disable preemption in debug atomic ops

2010-05-04 05:38:16 +02:00

lockdep_proc.c

lockdep: Use KSYM_NAME_LEN'ed buffer for __get_key_name()

2012-10-24 12:39:09 +02:00

lockdep_states.h

…

lockdep.c

lockdep: Check if nested lock is actually held

2012-09-13 17:00:44 +02:00

Makefile

MODSIGN: do not send garbage to stderr when enabling modules signature

2013-06-25 15:08:08 -07:00

modsign_certificate.S

MODSIGN: Avoid using .incbin in C source

2012-12-14 13:06:44 +10:30

modsign_pubkey.c

keys: use keyring_alloc() to create module signing keyring

2012-12-20 17:40:21 -08:00

module_signing.c

MODSIGN: Don't use enum-type bitfields in module signature info block

2012-12-05 11:27:24 +10:30

module-internal.h

MODSIGN: Move the magic string to the end of a module and eliminate the search

2012-10-19 17:30:40 -07:00

module.c

module: do percpu allocation after uniqueness check. No, really!

2013-07-18 11:07:37 -07:00

mutex-debug.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

mutex-debug.h

mutex: Use p->on_cpu for the adaptive spin

2011-04-14 08:52:33 +02:00

mutex.c

sched/rt: Use schedule_preempt_disabled()

2012-03-01 10:28:03 +01:00

mutex.h

mutex: Use p->on_cpu for the adaptive spin

2011-04-14 08:52:33 +02:00

notifier.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

nsproxy.c

userns: Implement unshare of the user namespace

2012-11-20 04:18:14 -08:00

padata.c

padata: use __this_cpu_read per-cpu helper

2012-12-06 17:16:23 +08:00

panic.c

panic: fix a possible deadlock in panic()

2012-07-30 17:25:13 -07:00

params.c

params: replace printk(KERN_<LVL>...) with pr_<lvl>(...)

2012-05-04 17:28:18 -07:00

pid_namespace.c

pid: Handle the exit of a multi-threaded init.

2013-04-05 09:26:01 -07:00

pid.c

pidns: Fix hang in zap_pid_ns_processes by sending a potentially extra wakeup

2013-09-20 12:56:08 -07:00

posix-cpu-timers.c

posix-cpu-timers: Fix nanosleep task_struct leak

2013-02-28 05:38:28 -08:00

posix-timers.c

posix-timer: Don't call idr_find() with out-of-range ID

2013-03-04 06:03:33 +08:00

printk.c

printk: Fix rq->lock vs logbuf_lock unlock lock inversion

2013-07-18 11:07:19 -07:00

profile.c

propagate name change to comments in kernel source

2012-12-06 10:39:54 +01:00

ptrace.c

exec/ptrace: fix get_dumpable() incorrect tests

2013-12-06 14:28:08 -08:00

range.c

range: fix bogus misuse of module.h to get printk()

2011-10-31 09:20:11 -04:00

rcu.h

rcu: Add a module parameter to force use of expedited RCU primitives

2012-10-23 14:54:08 -07:00

rcupdate.c

rcu: Add a module parameter to force use of expedited RCU primitives

2012-10-23 14:54:08 -07:00

rcutiny_plugin.h

rcu: Add a module parameter to force use of expedited RCU primitives

2012-10-23 14:54:08 -07:00

rcutiny.c

rcu: Fix TINY_RCU rcu_is_cpu_rrupt_from_idle check

2012-11-13 14:08:34 -08:00

rcutorture.c

Merge branches 'urgent.2012.10.27a', 'doc.2012.11.16a', 'fixes.2012.11.13a', 'srcu.2012.10.27a', 'stall.2012.11.13a', 'tracing.2012.11.08a' and 'idle.2012.10.24a' into HEAD

2012-11-16 09:59:58 -08:00

rcutree_plugin.h

rcu: Make rcu_nocb_poll an early_param instead of module_param

2013-01-08 14:12:19 -08:00

rcutree_trace.c

rcutrace: single_open() leaks

2013-05-07 20:08:25 -07:00

rcutree.c

context_tracking: New context tracking susbsystem

2012-11-30 11:40:07 -08:00

rcutree.h

rcu: Separate accounting of callbacks from callback-free CPUs

2012-11-16 10:05:57 -08:00

relay.c

splice: fix racy pipe->buffers uses

2012-06-13 21:16:42 +02:00

res_counter.c

res_counter: return amount of charges after res_counter_uncharge()

2012-12-18 15:02:12 -08:00

resource.c

kernel/resource.c: fix stack overflow in __reserve_region_with_split()

2012-10-06 03:05:31 +09:00

rtmutex_common.h

rtmutex: Simplify PI algorithm and make highest prio task get lock

2011-01-27 21:13:51 -05:00

rtmutex-debug.c

lockdep, rtmutex, bug: Show taint flags on error

2011-12-06 08:16:49 +01:00

rtmutex-debug.h

…

rtmutex-tester.c

rtmutex-tester: convert sysdev_class to a regular subsystem

2011-12-14 14:54:22 -08:00

rtmutex.c

Revert "rcu: Permit rt_mutex_unlock() with irqs disabled"

2011-12-11 10:33:18 -08:00

rtmutex.h

…

rwsem.c

lockdep, rwsem: provide down_write_nest_lock()

2013-01-11 14:54:55 -08:00

seccomp.c

seccomp: Make syscall skipping and nr changes more consistent

2012-10-02 21:14:29 +10:00

semaphore.c

semaphore: fix improper comment reference to mutex

2012-04-05 17:15:55 -07:00

signal.c

kernel/signal.c: stop info leak via the tkill and the tgkill syscalls

2013-04-25 12:51:10 -07:00

smp.c

smp: Fix SMP function call empty cpu mask race

2013-01-28 11:21:57 +01:00

smpboot.c

hotplug: Fix UP bug in smpboot hotplug code

2012-08-13 17:01:07 +02:00

smpboot.h

smpboot: Provide infrastructure for percpu hotplug threads

2012-08-13 17:01:07 +02:00

softirq.c

cputime: Specialize irq vtime hooks

2012-10-29 21:31:32 +01:00

spinlock.c

locking/kconfig: Simplify INLINE_SPIN_UNLOCK usage

2012-03-23 13:18:57 +01:00

srcu.c

Merge branches 'urgent.2012.10.27a', 'doc.2012.11.16a', 'fixes.2012.11.13a', 'srcu.2012.10.27a', 'stall.2012.11.13a', 'tracing.2012.11.08a' and 'idle.2012.10.24a' into HEAD

2012-11-16 09:59:58 -08:00

stacktrace.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

stop_machine.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

sys_ni.c

module: add syscall to load module from fd

2012-12-14 13:05:22 +10:30

sys.c

reboot: rigrate shutdown/reboot to boot cpu

2013-06-14 09:41:40 -07:00

sysctl_binary.c

sysctl: fix null checking in bin_dn_node_address()

2013-03-04 06:03:36 +08:00

sysctl.c

coredump: remove redundant defines for dumpable states

2013-12-06 14:28:08 -08:00

task_work.c

task_work: task_work_add() should not succeed after exit_task_work()

2012-09-13 16:47:34 +02:00

taskstats.c

taskstats: cgroupstats_user_cmd() may leak on error

2012-10-06 03:05:31 +09:00

test_kprobes.c

kprobes: Fix selftest to clear flags field for reusing probes

2010-10-14 08:55:27 +02:00

time.c

time: Move update_vsyscall definitions to timekeeper_internal.h

2012-09-24 12:38:06 -04:00

timeconst.pl

timeconst.pl: Eliminate Perl warning

2013-02-28 05:38:28 -08:00

timer.c

timer: Fix jiffies wrap behavior of round_jiffies_common()

2013-07-09 11:42:32 +01:00

tracepoint.c

static keys: Introduce 'struct static_key', static_key_true()/false() and static_key_slow_[inc|dec]()

2012-02-24 10:05:59 +01:00

tsacct.c

userns: Convert taskstats to handle the user and pid namespaces.

2012-09-18 01:01:32 -07:00

uid16.c

userns: Convert setting and getting uid and gid system calls to use kuid and kgid

2012-05-03 03:28:41 -07:00

up.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

user_namespace.c

userns: limit the maximum depth of user_namespace->parent chain

2013-08-21 10:58:20 -07:00

user-return-notifier.c

kernel: Map most files to use export.h instead of module.h

2011-10-31 09:20:12 -04:00

user.c

userns: Restrict when proc and sysfs can be mounted

2013-04-05 09:26:02 -07:00

utsname_sysctl.c

Merge branch 'modsplit-Oct31_2011' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2011-11-06 19:44:47 -08:00

utsname.c

userns: Require CAP_SYS_ADMIN for most uses of setns.

2012-12-14 16:12:03 -08:00

wait.c

propagate name change to comments in kernel source

2012-12-06 10:39:54 +01:00

watchdog.c

watchdog: Fix disable/enable regression

2012-12-19 12:10:33 -08:00

workqueue_sched.h

workqueue: implement concurrency managed dynamic worker pool

2010-06-29 10:07:14 +02:00

workqueue.c

workqueue: ensure @task is valid across kthread_stop()

2014-03-27 13:54:19 -07:00