1 files changed, 4 insertions, 3 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index e82a14577a98..660c2b8765bc 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -825,6 +825,8 @@ static int copy_signal(unsigned long clone_flags, struct task_struct *tsk)
         atomic_set(&sig->live, 1);
         init_waitqueue_head(&sig->wait_chldexit);
         sig->flags = 0;
+        if (clone_flags & CLONE_NEWPID)
+                sig->flags |= SIGNAL_UNKILLABLE;
         sig->group_exit_code = 0;
         sig->group_exit_task = NULL;
         sig->group_stop_count = 0;
@@ -1109,7 +1111,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
                 goto bad_fork_cleanup_mm;
         if ((retval = copy_io(clone_flags, p)))
                 goto bad_fork_cleanup_namespaces;
-        retval = copy_thread(0, clone_flags, stack_start, stack_size, p, regs);
+        retval = copy_thread(clone_flags, stack_start, stack_size, p, regs);
         if (retval)
                 goto bad_fork_cleanup_io;
 
@@ -1247,8 +1249,6 @@ static struct task_struct *copy_process(unsigned long clone_flags,
                         p->signal->leader_pid = pid;
                         tty_kref_put(p->signal->tty);
                         p->signal->tty = tty_kref_get(current->signal->tty);
-                        set_task_pgrp(p, task_pgrp_nr(current));
-                        set_task_session(p, task_session_nr(current));
                         attach_pid(p, PIDTYPE_PGID, task_pgrp(current));
                         attach_pid(p, PIDTYPE_SID, task_session(current));
                         list_add_tail_rcu(&p->tasks, &init_task.tasks);
@@ -1472,6 +1472,7 @@ void __init proc_caches_init(void)
         mm_cachep = kmem_cache_create("mm_struct",
                         sizeof(struct mm_struct), ARCH_MIN_MMSTRUCT_ALIGN,
                         SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL);
+        vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC);
         mmap_init();
 }