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authorLinus Torvalds <torvalds@linux-foundation.org>2017-02-27 23:09:29 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2017-02-27 23:09:29 -0800
commit86292b33d4b79ee03e2f43ea0381ef85f077c760 (patch)
treeb69a6ffd8ec5ac01599d351205a96804b9c415da /kernel
parent1ac884f173d4842216f6a24c03c9833e3ce6e982 (diff)
parent3e761a42e19c63b624ebac94d918d8a15e07e2a7 (diff)
downloadlinux-86292b33d4b79ee03e2f43ea0381ef85f077c760.tar.gz
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 ...
Diffstat (limited to 'kernel')
-rw-r--r--kernel/configs/android-base.config2
-rw-r--r--kernel/configs/android-recommended.config1
-rw-r--r--kernel/events/uprobes.c2
-rw-r--r--kernel/exit.c2
-rw-r--r--kernel/fork.c4
-rw-r--r--kernel/futex.c2
-rw-r--r--kernel/irq/manage.c2
-rw-r--r--kernel/relay.c2
-rw-r--r--kernel/sched/core.c4
-rw-r--r--kernel/signal.c11
-rw-r--r--kernel/torture.c2
11 files changed, 22 insertions, 12 deletions
diff --git a/kernel/configs/android-base.config b/kernel/configs/android-base.config
index 1a8f34f..26a06e0 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 99127ed..28ee064 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 18c6b23..d630f8a 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 90b09ca..8a768a3 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 348fe73..246bf9a 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 cdf3650..b687cb2 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 6b66959..944d068 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 8f8dc91..0e413d9 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 e1ae6ac..6ea1925 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 13f9def..214a8fe 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 0d887eb..01a9997 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;