8 files changed, 49 insertions, 15 deletions

diff --git a/kernel/audit.c b/kernel/audit.c
index e8692a5748c2..e092f1c0ce30 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -738,7 +738,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 if (!audit_enabled && msg_type != AUDIT_USER_AVC)
                         return 0;
 
-                err = audit_filter_user(&NETLINK_CB(skb), msg_type);
+                err = audit_filter_user(&NETLINK_CB(skb));
                 if (err == 1) {
                         err = 0;
                         if (msg_type == AUDIT_USER_TTY) {
@@ -779,7 +779,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 }
                 /* fallthrough */
         case AUDIT_LIST:
-                err = audit_receive_filter(nlh->nlmsg_type, NETLINK_CB(skb).pid,
+                err = audit_receive_filter(msg_type, NETLINK_CB(skb).pid,
                                            uid, seq, data, nlmsg_len(nlh),
                                            loginuid, sessionid, sid);
                 break;
@@ -798,7 +798,7 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
                 }
                 /* fallthrough */
         case AUDIT_LIST_RULES:
-                err = audit_receive_filter(nlh->nlmsg_type, NETLINK_CB(skb).pid,
+                err = audit_receive_filter(msg_type, NETLINK_CB(skb).pid,
                                            uid, seq, data, nlmsg_len(nlh),
                                            loginuid, sessionid, sid);
                 break;
diff --git a/kernel/auditfilter.c b/kernel/auditfilter.c
index 0e0bd27e6512..98c50cc671bb 100644
--- a/kernel/auditfilter.c
+++ b/kernel/auditfilter.c
@@ -1544,6 +1544,7 @@ static void audit_log_rule_change(uid_t loginuid, u32 sessionid, u32 sid,
  * @data: payload data
  * @datasz: size of payload data
  * @loginuid: loginuid of sender
+ * @sessionid: sessionid for netlink audit message
  * @sid: SE Linux Security ID of sender
  */
 int audit_receive_filter(int type, int pid, int uid, int seq, void *data,
@@ -1720,7 +1721,7 @@ static int audit_filter_user_rules(struct netlink_skb_parms *cb,
         return 1;
 }
 
-int audit_filter_user(struct netlink_skb_parms *cb, int type)
+int audit_filter_user(struct netlink_skb_parms *cb)
 {
         enum audit_state state = AUDIT_DISABLED;
         struct audit_entry *e;
diff --git a/kernel/capability.c b/kernel/capability.c
index cfbe44299488..901e0fdc3fff 100644
--- a/kernel/capability.c
+++ b/kernel/capability.c
@@ -121,6 +121,27 @@ static int cap_validate_magic(cap_user_header_t header, unsigned *tocopy)
  * uninteresting and/or not to be changed.
  */
 
+/*
+ * Atomically modify the effective capabilities returning the original
+ * value. No permission check is performed here - it is assumed that the
+ * caller is permitted to set the desired effective capabilities.
+ */
+kernel_cap_t cap_set_effective(const kernel_cap_t pE_new)
+{
+        kernel_cap_t pE_old;
+
+        spin_lock(&task_capability_lock);
+
+        pE_old = current->cap_effective;
+        current->cap_effective = pE_new;
+
+        spin_unlock(&task_capability_lock);
+
+        return pE_old;
+}
+
+EXPORT_SYMBOL(cap_set_effective);
+
 /**
  * sys_capget - get the capabilities of a given process.
  * @header: pointer to struct that contains capability version and
diff --git a/kernel/hrtimer.c b/kernel/hrtimer.c
index 421be5fe5cc7..ab80515008f4 100644
--- a/kernel/hrtimer.c
+++ b/kernel/hrtimer.c
@@ -1003,10 +1003,18 @@ hrtimer_start(struct hrtimer *timer, ktime_t tim, const enum hrtimer_mode mode)
          */
         raise = timer->state == HRTIMER_STATE_PENDING;
 
+        /*
+         * We use preempt_disable to prevent this task from migrating after
+         * setting up the softirq and raising it. Otherwise, if me migrate
+         * we will raise the softirq on the wrong CPU.
+         */
+        preempt_disable();
+
         unlock_hrtimer_base(timer, &flags);
 
         if (raise)
                 hrtimer_raise_softirq();
+        preempt_enable();
 
         return ret;
 }
diff --git a/kernel/kgdb.c b/kernel/kgdb.c
index 79e3c90113c2..3ec23c3ec97f 100644
--- a/kernel/kgdb.c
+++ b/kernel/kgdb.c
@@ -1499,7 +1499,8 @@ int kgdb_nmicallback(int cpu, void *regs)
         return 1;
 }
 
-void kgdb_console_write(struct console *co, const char *s, unsigned count)
+static void kgdb_console_write(struct console *co, const char *s,
+   unsigned count)
 {
         unsigned long flags;
 
diff --git a/kernel/sched.c b/kernel/sched.c
index b048ad8a11af..94ead43eda62 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -4398,22 +4398,20 @@ do_wait_for_common(struct completion *x, long timeout, int state)
                              signal_pending(current)) ||
                             (state == TASK_KILLABLE &&
                              fatal_signal_pending(current))) {
-                                __remove_wait_queue(&x->wait, &wait);
-                                return -ERESTARTSYS;
+                                timeout = -ERESTARTSYS;
+                                break;
                         }
                         __set_current_state(state);
                         spin_unlock_irq(&x->wait.lock);
                         timeout = schedule_timeout(timeout);
                         spin_lock_irq(&x->wait.lock);
-                        if (!timeout) {
-                                __remove_wait_queue(&x->wait, &wait);
-                                return timeout;
-                        }
-                } while (!x->done);
+                } while (!x->done && timeout);
                 __remove_wait_queue(&x->wait, &wait);
+                if (!x->done)
+                        return timeout;
         }
         x->done--;
-        return timeout;
+        return timeout ?: 1;
 }
 
 static long __sched
@@ -5889,6 +5887,7 @@ static void migrate_dead_tasks(unsigned int dead_cpu)
                 next = pick_next_task(rq, rq->curr);
                 if (!next)
                         break;
+                next->sched_class->put_prev_task(rq, next);
                 migrate_dead(dead_cpu, next);
 
         }
@@ -8503,6 +8502,9 @@ int sched_group_set_rt_period(struct task_group *tg, long rt_period_us)
         rt_period = (u64)rt_period_us * NSEC_PER_USEC;
         rt_runtime = tg->rt_bandwidth.rt_runtime;
 
+        if (rt_period == 0)
+                return -EINVAL;
+
         return tg_set_bandwidth(tg, rt_period, rt_runtime);
 }
 
diff --git a/kernel/sched_rt.c b/kernel/sched_rt.c
index 1dad5bbb59b6..0f3c19197fa4 100644
--- a/kernel/sched_rt.c
+++ b/kernel/sched_rt.c
@@ -250,7 +250,8 @@ static int do_sched_rt_period_timer(struct rt_bandwidth *rt_b, int overrun)
                         if (rt_rq->rt_time || rt_rq->rt_nr_running)
                                 idle = 0;
                         spin_unlock(&rt_rq->rt_runtime_lock);
-                }
+                } else if (rt_rq->rt_nr_running)
+                        idle = 0;
 
                 if (enqueue)
                         sched_rt_rq_enqueue(rt_rq);
diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 29fc39f1029c..ce7799540c91 100644
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -13,7 +13,7 @@
  *   Kai Petzke <wpp@marie.physik.tu-berlin.de>
  *   Theodore Ts'o <tytso@mit.edu>
  *
- * Made to use alloc_percpu by Christoph Lameter <clameter@sgi.com>.
+ * Made to use alloc_percpu by Christoph Lameter.
  */
 
 #include <linux/module.h>