Merge branch 'next' into for-linus

1 files changed, 10 insertions, 5 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 1415dc4598ae..5b2959b3ffc2 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -939,9 +939,9 @@ SYSCALL_DEFINE1(set_tid_address, int __user *, tidptr)
 
 static void rt_mutex_init_task(struct task_struct *p)
 {
-	spin_lock_init(&p->pi_lock);
+	raw_spin_lock_init(&p->pi_lock);
 #ifdef CONFIG_RT_MUTEXES
-	plist_head_init(&p->pi_waiters, &p->pi_lock);
+	plist_head_init_raw(&p->pi_waiters, &p->pi_lock);
 	p->pi_blocked_on = NULL;
 #endif
 }
@@ -1127,6 +1127,10 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 #ifdef CONFIG_DEBUG_MUTEXES
 	p->blocked_on = NULL; /* not blocked yet */
 #endif
+#ifdef CONFIG_CGROUP_MEM_RES_CTLR
+	p->memcg_batch.do_batch = 0;
+	p->memcg_batch.memcg = NULL;
+#endif
 
 	p->bts = NULL;
 
@@ -1206,9 +1210,10 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 		p->sas_ss_sp = p->sas_ss_size = 0;
 
 	/*
-	 * Syscall tracing should be turned off in the child regardless
-	 * of CLONE_PTRACE.
+	 * Syscall tracing and stepping should be turned off in the
+	 * child regardless of CLONE_PTRACE.
 	 */
+	user_disable_single_step(p);
 	clear_tsk_thread_flag(p, TIF_SYSCALL_TRACE);
 #ifdef TIF_SYSCALL_EMU
 	clear_tsk_thread_flag(p, TIF_SYSCALL_EMU);
@@ -1286,7 +1291,6 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 	}
 
 	if (likely(p->pid)) {
-		list_add_tail(&p->sibling, &p->real_parent->children);
 		tracehook_finish_clone(p, clone_flags, trace);
 
 		if (thread_group_leader(p)) {
@@ -1298,6 +1302,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
 			p->signal->tty = tty_kref_get(current->signal->tty);
 			attach_pid(p, PIDTYPE_PGID, task_pgrp(current));
 			attach_pid(p, PIDTYPE_SID, task_session(current));
+			list_add_tail(&p->sibling, &p->real_parent->children);
 			list_add_tail_rcu(&p->tasks, &init_task.tasks);
 			__get_cpu_var(process_counts)++;
 		}