Merge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  exit signals: use of uninitialized field notify_count
  lockdep: fix invalid list_del_rcu in zap_class
  lockstat: repair erronous contention statistics
  lockstat: fix numerical output rounding error

3 files changed, 7 insertions, 6 deletions

diff --git a/kernel/exit.c b/kernel/exit.c
index 38ec40630149..75c647387639 100644
--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -918,8 +918,8 @@ static void exit_notify(struct task_struct *tsk, int group_dead)
 
         /* mt-exec, de_thread() is waiting for us */
         if (thread_group_leader(tsk) &&
-            tsk->signal->notify_count < 0 &&
-            tsk->signal->group_exit_task)
+            tsk->signal->group_exit_task &&
+            tsk->signal->notify_count < 0)
                 wake_up_process(tsk->signal->group_exit_task);
 
         write_unlock_irq(&tasklist_lock);
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index 3bfb1877a003..dbda475b13bd 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -875,11 +875,11 @@ static int add_lock_to_list(struct lock_class *class, struct lock_class *this,
         if (!entry)
                 return 0;
 
-        entry->class = this;
-        entry->distance = distance;
         if (!save_trace(&entry->trace))
                 return 0;
 
+        entry->class = this;
+        entry->distance = distance;
         /*
          * Since we never remove from the dependency list, the list can
          * be walked lockless by other CPUs, it's only allocation
@@ -3029,7 +3029,7 @@ found_it:
 
         stats = get_lock_stats(hlock_class(hlock));
         if (point < ARRAY_SIZE(stats->contention_point))
-                stats->contention_point[i]++;
+                stats->contention_point[point]++;
         if (lock->cpu != smp_processor_id())
                 stats->bounces[bounce_contended + !!hlock->read]++;
         put_lock_stats(stats);
diff --git a/kernel/lockdep_proc.c b/kernel/lockdep_proc.c
index 4b194d34d77f..20dbcbf9c7dd 100644
--- a/kernel/lockdep_proc.c
+++ b/kernel/lockdep_proc.c
@@ -472,8 +472,9 @@ static void snprint_time(char *buf, size_t bufsiz, s64 nr)
 {
         unsigned long rem;
 
+        nr += 5; /* for display rounding */
         rem = do_div(nr, 1000); /* XXX: do_div_signed */
-        snprintf(buf, bufsiz, "%lld.%02d", (long long)nr, ((int)rem+5)/10);
+        snprintf(buf, bufsiz, "%lld.%02d", (long long)nr, (int)rem/10);
 }
 
 static void seq_time(struct seq_file *m, s64 time)