linux/kernel
Peter Zijlstra a96bbc1641 perf_counter: Fix race in counter initialization
We need the PID namespace and counter ID available when the
counter overflows and we need to generate a sample event.

[ Impact: fix kernel crash with high-frequency sampling ]

Reported-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: John Kacur <jkacur@redhat.com>
LKML-Reference: <new-submission>
[ fixed a further crash and cleaned up the initialization a bit ]
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-06-03 14:57:03 +02:00
..
irq
power PM: Do not hold dpm_list_mtx while disabling/enabling nonboot CPUs 2009-05-24 21:15:07 +02:00
time
trace tracing: Append prompt in /debug/tracing/README file 2009-05-15 19:43:22 +02:00
.gitignore
acct.c
async.c async: make sure independent async domains can't accidentally entangle 2009-05-24 13:38:41 -07:00
audit_tree.c
audit.c
audit.h
auditfilter.c inotify: use GFP_NOFS in kernel_event() to work around a lockdep false-positive 2009-05-06 16:36:09 -07:00
auditsc.c
backtracetest.c
bounds.c
capability.c
cgroup_debug.c
cgroup_freezer.c
cgroup.c Convert obvious places to deactivate_locked_super() 2009-05-09 10:49:40 -04:00
compat.c
configs.c
cpu.c
cpuset.c
cred-internals.h
cred.c
delayacct.c
dma-coherent.c
dma.c
exec_domain.c
exit.c perf_counter: Dynamically allocate tasks' perf_counter_context struct 2009-05-22 12:18:19 +02:00
extable.c
fork.c perf_counter: Add a comm hook for pure fork()s 2009-06-03 14:14:30 +02:00
freezer.c
futex_compat.c
futex.c futex: setup writeable mapping for futex ops which modify user space data 2009-05-19 23:36:52 +02:00
hrtimer.c
hung_task.c
itimer.c
kallsyms.c
Kconfig.freezer
Kconfig.hz
Kconfig.preempt
kexec.c PM: Do not hold dpm_list_mtx while disabling/enabling nonboot CPUs 2009-05-24 21:15:07 +02:00
kfifo.c
kgdb.c sysrq, intel_fb: fix sysrq g collision 2009-05-15 07:56:24 -05:00
kmod.c kmod: Release sub_info on cred allocation failure. 2009-05-26 12:11:19 -07:00
kprobes.c kprobes: fix to use text_mutex around arm/disarm kprobe 2009-05-08 16:23:48 -07:00
ksysfs.c
kthread.c
latencytop.c
lockdep_internals.h lockdep: increase MAX_LOCKDEP_ENTRIES and MAX_LOCKDEP_CHAINS 2009-05-12 19:59:52 +02:00
lockdep_proc.c
lockdep_states.h
lockdep.c
Makefile
marker.c
module.c
mutex-debug.c
mutex-debug.h
mutex.c Merge branch 'core/locking' into perfcounters/core 2009-05-06 08:47:26 +02:00
mutex.h
notifier.c
ns_cgroup.c
nsproxy.c
panic.c Fix caller information for warn_slowpath_null 2009-05-16 13:41:28 -07:00
params.c
perf_counter.c perf_counter: Fix race in counter initialization 2009-06-03 14:57:03 +02:00
pid_namespace.c
pid.c
pm_qos_params.c
posix-cpu-timers.c
posix-timers.c
printk.c
profile.c
ptrace.c
rcuclassic.c
rcupdate.c
rcupreempt_trace.c
rcupreempt.c
rcutorture.c
rcutree_trace.c
rcutree.c
rcutree.h
relay.c
res_counter.c
resource.c
rtmutex_common.h
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rwsem.c
sched_clock.c sched: Fix fallback sched_clock()'s offset when using jiffies 2009-05-09 10:08:19 +02:00
sched_cpupri.c
sched_cpupri.h
sched_debug.c
sched_fair.c
sched_features.h
sched_idletask.c
sched_rt.c
sched_stats.h
sched.c perf_counter: Fix cpu migration counter 2009-06-02 13:10:54 +02:00
seccomp.c
semaphore.c
signal.c
slow-work.c
smp.c
softirq.c
softlockup.c
spinlock.c
srcu.c
stacktrace.c
stop_machine.c
sys_ni.c
sys.c
sysctl_check.c
sysctl.c perf_counter: Generic per counter interrupt throttle 2009-05-25 21:41:12 +02:00
taskstats.c
test_kprobes.c
time.c
timeconst.pl
timer.c
tracepoint.c
tsacct.c
uid16.c
up.c
user_namespace.c
user.c
utsname_sysctl.c
utsname.c
wait.c
workqueue.c