Oleg Nesterov 950bbabb5a pid_ns: (BUG 11391) change ->child_reaper when init->group_leader exits ... We don't change pid_ns->child_reaper when the main thread of the subnamespace init exits. As Robert Rex <robert.rex@exasol.com> pointed out this is wrong. Yes, the re-parenting itself works correctly, but if the reparented task exits it needs ->parent->nsproxy->pid_ns in do_notify_parent(), and if the main thread is zombie its ->nsproxy was already cleared by exit_task_namespaces(). Introduce the new function, find_new_reaper(), which finds the new ->parent for the re-parenting and changes ->child_reaper if needed. Kill the now unneeded exit_child_reaper(). Also move the changing of ->child_reaper from zap_pid_ns_processes() to find_new_reaper(), this consolidates the games with ->child_reaper and makes it stable under tasklist_lock. Addresses http://bugzilla.kernel.org/show_bug.cgi?id=11391 Reported-by: Robert Rex <robert.rex@exasol.com> Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Acked-by: Serge Hallyn <serue@us.ibm.com> Acked-by: Pavel Emelyanov <xemul@openvz.org> Acked-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2008-09-02 19:21:38 -07:00
..
irq
power	ftrace: disable tracing for hibernation	2008-08-28 12:27:39 -07:00
time
trace
.gitignore
acct.c
audit.c
audit.h
audit_tree.c
auditfilter.c
auditsc.c	[PATCH] audit: Moved variable declaration to beginning of function	2008-09-01 23:06:45 -04:00
backtracetest.c
bounds.c
capability.c
cgroup.c
cgroup_debug.c
compat.c
configs.c
cpu.c
cpuset.c
delayacct.c
dma-coherent.c
dma.c
exec_domain.c
exit.c	pid_ns: (BUG 11391) change ->child_reaper when init->group_leader exits	2008-09-02 19:21:38 -07:00
extable.c
fork.c
futex.c
futex_compat.c
hrtimer.c
itimer.c
kallsyms.c
Kconfig.hz
Kconfig.preempt
kexec.c
kfifo.c
kgdb.c
kmod.c
kprobes.c
ksysfs.c
kthread.c
latencytop.c
lockdep.c	lockdep: fix invalid list_del_rcu in zap_class	2008-08-27 08:40:36 +02:00
lockdep_internals.h
lockdep_proc.c	lockstat: fix numerical output rounding error	2008-08-26 10:37:46 +02:00
Makefile
marker.c
module.c	[module] Don't let gcc inline load_module()	2008-08-25 11:10:26 -07:00
mutex-debug.c
mutex-debug.h
mutex.c
mutex.h
notifier.c
ns_cgroup.c
nsproxy.c
panic.c
params.c
pid.c
pid_namespace.c	pid_ns: (BUG 11391) change ->child_reaper when init->group_leader exits	2008-09-02 19:21:38 -07:00
pm_qos_params.c
posix-cpu-timers.c
posix-timers.c
printk.c
profile.c
ptrace.c
rcuclassic.c
rcupdate.c
rcupreempt.c
rcupreempt_trace.c
rcutorture.c
relay.c
res_counter.c
resource.c	kernel/resource.c: fix new kernel-doc warning	2008-09-02 10:47:30 -07:00
rtmutex-debug.c
rtmutex-debug.h
rtmutex-tester.c
rtmutex.c
rtmutex.h
rtmutex_common.h
rwsem.c
sched.c
sched_clock.c	sched_clock: fix cpu_clock()	2008-08-25 17:39:57 +02:00
sched_cpupri.c
sched_cpupri.h
sched_debug.c
sched_fair.c
sched_features.h
sched_idletask.c
sched_rt.c	sched: rt-bandwidth accounting fix	2008-08-28 13:42:38 +02:00
sched_stats.h
seccomp.c
semaphore.c
signal.c
smp.c	smp: have smp_call_function_single() detect invalid CPUs	2008-08-25 17:45:48 -07:00
softirq.c
softlockup.c	softlockup: minor cleanup, don't check task->state twice	2008-09-02 10:49:51 -07:00
spinlock.c
srcu.c
stacktrace.c
stop_machine.c
sys.c
sys_ni.c
sysctl.c
sysctl_check.c
taskstats.c
test_kprobes.c
time.c
timeconst.pl
timer.c
tsacct.c
uid16.c
user.c
user_namespace.c
utsname.c
utsname_sysctl.c
wait.c
workqueue.c