Oleg Nesterov 2fd611a991 uprobes: Suppress uprobe_munmap() from mmput() ... uprobe_munmap() does get_user_pages() and it is also called from the final mmput()->exit_mmap() path. This slows down exit/mmput() for no reason, and I think it is simply dangerous/wrong to try to fault-in a page into the dying mm. If nothing else, this happens after the last sync_mm_rss(), afaics handle_mm_fault() can change the task->rss_stat and make the subsequent check_mm() unhappy. Change uprobe_munmap() to check mm->mm_users != 0. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Acked-by: Srikar Dronamraju <srikar.vnet.ibm.com> Cc: Anton Arapov <anton@redhat.com> Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/20120729182231.GA20336@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2012-07-30 11:27:21 +02:00
..
debug	kdb: Switch to nolock variants of kmsg_dump functions	2012-07-21 10:34:00 -07:00
events	uprobes: Suppress uprobe_munmap() from mmput()	2012-07-30 11:27:21 +02:00
gcov
irq	Merge branches 'irq-urgent-for-linus' and 'smp-hotplug-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-06-04 11:36:51 -07:00
power	Make wait_for_device_probe() also do scsi_complete_async_scans()	2012-07-18 18:15:46 -07:00
sched	sched: Deliver sched_switch events to the current task	2012-07-26 12:23:10 +02:00
time	Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2012-07-22 11:35:46 -07:00
trace	Merge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core	2012-07-18 11:18:00 +02:00
.gitignore
acct.c
async.c
audit.c
audit.h
audit_tree.c
audit_watch.c
auditfilter.c
auditsc.c
backtracetest.c
bounds.c
capability.c
cgroup.c	cgroup: fix cgroup hierarchy umount race	2012-07-07 16:08:18 -07:00
cgroup_freezer.c
compat.c
configs.c
cpu.c	kernel/cpu.c: document clear_tasks_mm_cpumask()	2012-05-31 17:49:30 -07:00
cpu_pm.c	kernel/cpu_pm.c: fix various typos	2012-05-31 17:49:27 -07:00
cpuset.c
crash_dump.c
cred.c	keys: kill task_struct->replacement_session_keyring	2012-05-23 22:11:41 -04:00
delayacct.c
dma.c
elfcore.c
exec_domain.c
exit.c	pidns: find_new_reaper() can no longer switch to init_pid_ns.child_reaper	2012-06-20 14:39:36 -07:00
extable.c
fork.c	sched: Fix fork() error path to not crash	2012-07-05 20:57:32 +02:00
freezer.c
futex.c
futex_compat.c
groups.c
hrtimer.c	hrtimer: Update hrtimer base offsets each hrtimer_interrupt	2012-07-11 23:34:39 +02:00
hung_task.c
irq_work.c
itimer.c
jump_label.c
kallsyms.c	vsprintf: fix %ps on non symbols when using kallsyms	2012-05-29 16:22:32 -07:00
kcmp.c	syscalls, x86: add __NR_kcmp syscall	2012-05-31 17:49:32 -07:00
Kconfig.freezer
Kconfig.hz
Kconfig.locks
Kconfig.preempt
kexec.c
kfifo.c
kmod.c	kmod.c: fix kernel-doc warning	2012-05-31 17:49:28 -07:00
kprobes.c
ksysfs.c
kthread.c
latencytop.c
lglock.c	brlocks/lglocks: turn into functions	2012-05-29 23:28:41 -04:00
lockdep.c
lockdep_internals.h
lockdep_proc.c
lockdep_states.h
Makefile	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs	2012-06-01 10:34:35 -07:00
module.c	Guard check in module loader against integer overflow	2012-05-23 22:28:53 +09:30
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
nsproxy.c
padata.c
panic.c
params.c
pid.c	mm: add a low limit to alloc_large_system_hash	2012-05-24 00:28:21 -04:00
pid_namespace.c	pidns: guarantee that the pidns init will be the last pidns process reaped	2012-06-20 14:39:36 -07:00
posix-cpu-timers.c
posix-timers.c
printk.c	printk: Implement some unlocked kmsg_dump functions	2012-07-21 10:34:00 -07:00
profile.c
ptrace.c
range.c
rcu.h
rcupdate.c	rcu: Consolidate tree/tiny __rcu_read_{,un}lock() implementations	2012-07-02 12:34:23 -07:00
rcutiny.c	rcu: Fix rcu_is_cpu_idle() #ifdef in TINY_RCU	2012-07-02 12:34:25 -07:00
rcutiny_plugin.h	rcu: Fix code-style issues involving "else"	2012-07-06 06:01:48 -07:00
rcutorture.c	rcu: Fix broken strings in RCU's source code.	2012-07-06 06:01:49 -07:00
rcutree.c	rcu: Fix code-style issues involving "else"	2012-07-06 06:01:48 -07:00
rcutree.h	Merge branches 'bigrtm.2012.07.04a', 'doctorture.2012.07.02a', 'fixes.2012.07.06a' and 'fnh.2012.07.02a' into HEAD	2012-07-06 05:59:30 -07:00
rcutree_plugin.h	rcu: Fix code-style issues involving "else"	2012-07-06 06:01:48 -07:00
rcutree_trace.c	rcu: Fix broken strings in RCU's source code.	2012-07-06 06:01:49 -07:00
relay.c	splice: fix racy pipe->buffers uses	2012-06-13 21:16:42 +02:00
res_counter.c	rescounters: add res_counter_uncharge_until()	2012-05-29 16:22:27 -07:00
resource.c	kernel/resource.c: correct the comment of allocate_resource()	2012-05-31 17:49:26 -07:00
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
seccomp.c
semaphore.c
signal.c	new helper: signal_delivered()	2012-06-01 12:58:52 -04:00
smp.c	smp: Remove ipi_call_lock[_irq]()/ipi_call_unlock[_irq]()	2012-06-05 17:27:14 +02:00
smpboot.c	smpboot, idle: Fix comment mismatch over idle_threads_init()	2012-05-24 22:58:08 +02:00
smpboot.h	smpboot: Remove leftover declaration	2012-06-11 15:07:52 +02:00
softirq.c
spinlock.c
srcu.c
stacktrace.c
stop_machine.c
sys.c	c/r: prctl: less paranoid prctl_set_mm_exe_file()	2012-07-11 16:04:43 -07:00
sys_ni.c	syscalls, x86: add __NR_kcmp syscall	2012-05-31 17:49:32 -07:00
sysctl.c
sysctl_binary.c
task_work.c	task_work_add: generic process-context callbacks	2012-05-23 22:09:21 -04:00
taskstats.c
test_kprobes.c
time.c
timeconst.pl
timer.c	timers: Improve get_next_timer_interrupt()	2012-06-06 13:49:02 +02:00
tracepoint.c
tsacct.c
uid16.c
up.c
user-return-notifier.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
wait.c
watchdog.c	watchdog: Quiet down the boot messages	2012-06-14 12:20:50 +02:00
workqueue.c
workqueue_sched.h