Merge branch 'akpm' (patches from Andrew)

Merge yet more updates from Andrew Morton:

 - a few MM remainders

 - misc things

 - autofs updates

 - signals

 - affs updates

 - ipc

 - nilfs2

 - spelling.txt updates

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (78 commits)
  mm, x86: fix HIGHMEM64 && PARAVIRT build config for native_pud_clear()
  mm: add arch-independent testcases for RODATA
  hfs: atomically read inode size
  mm: clarify mm_struct.mm_{users,count} documentation
  mm: use mmget_not_zero() helper
  mm: add new mmget() helper
  mm: add new mmgrab() helper
  checkpatch: warn when formats use %Z and suggest %z
  lib/vsprintf.c: remove %Z support
  scripts/spelling.txt: add some typo-words
  scripts/spelling.txt: add "followings" pattern and fix typo instances
  scripts/spelling.txt: add "therfore" pattern and fix typo instances
  scripts/spelling.txt: add "overwriten" pattern and fix typo instances
  scripts/spelling.txt: add "overwritting" pattern and fix typo instances
  scripts/spelling.txt: add "deintialize(d)" pattern and fix typo instances
  scripts/spelling.txt: add "disassocation" pattern and fix typo instances
  scripts/spelling.txt: add "omited" pattern and fix typo instances
  scripts/spelling.txt: add "explictely" pattern and fix typo instances
  scripts/spelling.txt: add "applys" pattern and fix typo instances
  scripts/spelling.txt: add "configuartion" pattern and fix typo instances
  ...

11 files changed, 22 insertions, 12 deletions

diff --git a/kernel/configs/android-base.config b/kernel/configs/android-base.config
index 1a8f34f63601..26a06e09a5bd 100644
--- a/kernel/configs/android-base.config
+++ b/kernel/configs/android-base.config
@@ -21,6 +21,7 @@ CONFIG_CP15_BARRIER_EMULATION=y
 CONFIG_DEFAULT_SECURITY_SELINUX=y
 CONFIG_EMBEDDED=y
 CONFIG_FB=y
+CONFIG_HARDENED_USERCOPY=y
 CONFIG_HIGH_RES_TIMERS=y
 CONFIG_INET6_AH=y
 CONFIG_INET6_ESP=y
@@ -129,6 +130,7 @@ CONFIG_PPP_DEFLATE=y
 CONFIG_PPP_MPPE=y
 CONFIG_PREEMPT=y
 CONFIG_QUOTA=y
+CONFIG_RANDOMIZE_BASE=y
 CONFIG_RTC_CLASS=y
 CONFIG_RT_GROUP_SCHED=y
 CONFIG_SECCOMP=y
diff --git a/kernel/configs/android-recommended.config b/kernel/configs/android-recommended.config
index 99127edc5204..28ee064b6744 100644
--- a/kernel/configs/android-recommended.config
+++ b/kernel/configs/android-recommended.config
@@ -1,4 +1,5 @@
 #  KEEP ALPHABETICALLY SORTED
+# CONFIG_AIO is not set
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 # CONFIG_INPUT_MOUSE is not set
 # CONFIG_LEGACY_PTYS is not set
diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
index 18c6b23edd3c..d630f8ac4d2f 100644
--- a/kernel/events/uprobes.c
+++ b/kernel/events/uprobes.c
@@ -747,7 +747,7 @@ build_map_info(struct address_space *mapping, loff_t offset, bool is_register)
 			continue;
 		}
 
-		if (!atomic_inc_not_zero(&vma->vm_mm->mm_users))
+		if (!mmget_not_zero(vma->vm_mm))
 			continue;
 
 		info = prev;
diff --git a/kernel/exit.c b/kernel/exit.c
index 90b09ca35c84..8a768a3672a5 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -539,7 +539,7 @@ static void exit_mm(void)
 		__set_current_state(TASK_RUNNING);
 		down_read(&mm->mmap_sem);
 	}
-	atomic_inc(&mm->mm_count);
+	mmgrab(mm);
 	BUG_ON(mm != current->active_mm);
 	/* more a memory barrier than a real lock */
 	task_lock(current);
diff --git a/kernel/fork.c b/kernel/fork.c
index 348fe73155bc..246bf9aaf9df 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1000,7 +1000,7 @@ struct mm_struct *get_task_mm(struct task_struct *task)
 		if (task->flags & PF_KTHREAD)
 			mm = NULL;
 		else
-			atomic_inc(&mm->mm_users);
+			mmget(mm);
 	}
 	task_unlock(task);
 	return mm;
@@ -1188,7 +1188,7 @@ static int copy_mm(unsigned long clone_flags, struct task_struct *tsk)
 	vmacache_flush(tsk);
 
 	if (clone_flags & CLONE_VM) {
-		atomic_inc(&oldmm->mm_users);
+		mmget(oldmm);
 		mm = oldmm;
 		goto good_mm;
 	}
diff --git a/kernel/futex.c b/kernel/futex.c
index cdf365036141..b687cb22301c 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -338,7 +338,7 @@ static inline bool should_fail_futex(bool fshared)
 
 static inline void futex_get_mm(union futex_key *key)
 {
-	atomic_inc(&key->private.mm->mm_count);
+	mmgrab(key->private.mm);
 	/*
 	 * Ensure futex_get_mm() implies a full barrier such that
 	 * get_futex_key() implies a full barrier. This is relied upon
diff --git a/kernel/irq/manage.c b/kernel/irq/manage.c
index 6b669593e7eb..944d068b6c48 100644
--- a/kernel/irq/manage.c
+++ b/kernel/irq/manage.c
@@ -353,7 +353,7 @@ static int setup_affinity(struct irq_desc *desc, struct cpumask *mask)
 		return 0;
 
 	/*
-	 * Preserve the managed affinity setting and an userspace affinity
+	 * Preserve the managed affinity setting and a userspace affinity
 	 * setup, but make sure that one of the targets is online.
 	 */
 	if (irqd_affinity_is_managed(&desc->irq_data) ||
diff --git a/kernel/relay.c b/kernel/relay.c
index 8f8dc91db680..0e413d9eec8a 100644
--- a/kernel/relay.c
+++ b/kernel/relay.c
@@ -847,7 +847,7 @@ void relay_close(struct rchan *chan)
 
 	if (chan->last_toobig)
 		printk(KERN_WARNING "relay: one or more items not logged "
-		       "[item size (%Zd) > sub-buffer size (%Zd)]\n",
+		       "[item size (%zd) > sub-buffer size (%zd)]\n",
 		       chan->last_toobig, chan->subbuf_size);
 
 	list_del(&chan->list);
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index e1ae6ac15eac..6ea1925ac5c0 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -2847,7 +2847,7 @@ context_switch(struct rq *rq, struct task_struct *prev,
 
 	if (!mm) {
 		next->active_mm = oldmm;
-		atomic_inc(&oldmm->mm_count);
+		mmgrab(oldmm);
 		enter_lazy_tlb(oldmm, next);
 	} else
 		switch_mm_irqs_off(oldmm, mm, next);
@@ -6098,7 +6098,7 @@ void __init sched_init(void)
 	/*
 	 * The boot idle thread does lazy MMU switching as well:
 	 */
-	atomic_inc(&init_mm.mm_count);
+	mmgrab(&init_mm);
 	enter_lazy_tlb(&init_mm, current);
 
 	/*
diff --git a/kernel/signal.c b/kernel/signal.c
index 13f9def8b24a..214a8feeb771 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -3239,10 +3239,17 @@ int compat_restore_altstack(const compat_stack_t __user *uss)
 
 int __compat_save_altstack(compat_stack_t __user *uss, unsigned long sp)
 {
+	int err;
 	struct task_struct *t = current;
-	return  __put_user(ptr_to_compat((void __user *)t->sas_ss_sp), &uss->ss_sp) |
-		__put_user(sas_ss_flags(sp), &uss->ss_flags) |
+	err = __put_user(ptr_to_compat((void __user *)t->sas_ss_sp),
+			 &uss->ss_sp) |
+		__put_user(t->sas_ss_flags, &uss->ss_flags) |
 		__put_user(t->sas_ss_size, &uss->ss_size);
+	if (err)
+		return err;
+	if (t->sas_ss_flags & SS_AUTODISARM)
+		sas_ss_reset(t);
+	return 0;
 }
 #endif
 
diff --git a/kernel/torture.c b/kernel/torture.c
index 0d887eb62856..01a99976f072 100644
--- a/kernel/torture.c
+++ b/kernel/torture.c
@@ -311,7 +311,7 @@ EXPORT_SYMBOL_GPL(torture_random);
 /*
  * Variables for shuffling.  The idea is to ensure that each CPU stays
  * idle for an extended period to test interactions with dyntick idle,
- * as well as interactions with any per-CPU varibles.
+ * as well as interactions with any per-CPU variables.
  */
 struct shuffle_task {
 	struct list_head st_l;