Merge branch 'master' into upstream

6 files changed, 34 insertions, 16 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 1b0f7b1e0881..aa36c43783cc 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -1387,8 +1387,10 @@ long do_fork(unsigned long clone_flags,
 
                 if (clone_flags & CLONE_VFORK) {
                         wait_for_completion(&vfork);
-                        if (unlikely (current->ptrace & PT_TRACE_VFORK_DONE))
+                        if (unlikely (current->ptrace & PT_TRACE_VFORK_DONE)) {
+                                current->ptrace_message = nr;
                                 ptrace_notify ((PTRACE_EVENT_VFORK_DONE << 8) | SIGTRAP);
+                        }
                 }
         } else {
                 free_pid(pid);
diff --git a/kernel/futex.c b/kernel/futex.c
index dda2049692a2..c2b2e0b83abf 100644
--- a/kernel/futex.c
+++ b/kernel/futex.c
@@ -948,6 +948,7 @@ static int unqueue_me(struct futex_q *q)
         /* In the common case we don't take the spinlock, which is nice. */
  retry:
         lock_ptr = q->lock_ptr;
+        barrier();
         if (lock_ptr != 0) {
                 spin_lock(lock_ptr);
                 /*
diff --git a/kernel/futex_compat.c b/kernel/futex_compat.c
index d1aab1a452cc..c5cca3f65cb7 100644
--- a/kernel/futex_compat.c
+++ b/kernel/futex_compat.c
@@ -39,7 +39,7 @@ void compat_exit_robust_list(struct task_struct *curr)
 {
         struct compat_robust_list_head __user *head = curr->compat_robust_list;
         struct robust_list __user *entry, *pending;
-        unsigned int limit = ROBUST_LIST_LIMIT, pi;
+        unsigned int limit = ROBUST_LIST_LIMIT, pi, pip;
         compat_uptr_t uentry, upending;
         compat_long_t futex_offset;
 
@@ -59,10 +59,10 @@ void compat_exit_robust_list(struct task_struct *curr)
          * if it exists:
          */
         if (fetch_robust_entry(&upending, &pending,
-                               &head->list_op_pending, &pi))
+                               &head->list_op_pending, &pip))
                 return;
         if (upending)
-                handle_futex_death((void *)pending + futex_offset, curr, pi);
+                handle_futex_death((void *)pending + futex_offset, curr, pip);
 
         while (compat_ptr(uentry) != &head->list) {
                 /*
diff --git a/kernel/power/process.c b/kernel/power/process.c
index b2a5f671d6cd..72e72d2c61e6 100644
--- a/kernel/power/process.c
+++ b/kernel/power/process.c
@@ -66,13 +66,25 @@ static inline void freeze_process(struct task_struct *p)
         }
 }
 
+static void cancel_freezing(struct task_struct *p)
+{
+        unsigned long flags;
+
+        if (freezing(p)) {
+                pr_debug("  clean up: %s\n", p->comm);
+                do_not_freeze(p);
+                spin_lock_irqsave(&p->sighand->siglock, flags);
+                recalc_sigpending_tsk(p);
+                spin_unlock_irqrestore(&p->sighand->siglock, flags);
+        }
+}
+
 /* 0 = success, else # of processes that we failed to stop */
 int freeze_processes(void)
 {
         int todo, nr_user, user_frozen;
         unsigned long start_time;
         struct task_struct *g, *p;
-        unsigned long flags;
 
         printk( "Stopping tasks: " );
         start_time = jiffies;
@@ -85,6 +97,10 @@ int freeze_processes(void)
                                 continue;
                         if (frozen(p))
                                 continue;
+                        if (p->state == TASK_TRACED && frozen(p->parent)) {
+                                cancel_freezing(p);
+                                continue;
+                        }
                         if (p->mm && !(p->flags & PF_BORROWED_MM)) {
                                 /* The task is a user-space one.
                                  * Freeze it unless there's a vfork completion
@@ -126,13 +142,7 @@ int freeze_processes(void)
                 do_each_thread(g, p) {
                         if (freezeable(p) && !frozen(p))
                                 printk(KERN_ERR "  %s\n", p->comm);
-                        if (freezing(p)) {
-                                pr_debug("  clean up: %s\n", p->comm);
-                                p->flags &= ~PF_FREEZE;
-                                spin_lock_irqsave(&p->sighand->siglock, flags);
-                                recalc_sigpending_tsk(p);
-                                spin_unlock_irqrestore(&p->sighand->siglock, flags);
-                        }
+                        cancel_freezing(p);
                 } while_each_thread(g, p);
                 read_unlock(&tasklist_lock);
                 return todo;
diff --git a/kernel/printk.c b/kernel/printk.c
index 65ca0688f86f..1149365e989e 100644
--- a/kernel/printk.c
+++ b/kernel/printk.c
@@ -799,6 +799,9 @@ void release_console_sem(void)
                 up(&secondary_console_sem);
                 return;
         }
+
+        console_may_schedule = 0;
+
         for ( ; ; ) {
                 spin_lock_irqsave(&logbuf_lock, flags);
                 wake_klogd |= log_start - log_end;
@@ -812,7 +815,6 @@ void release_console_sem(void)
                 local_irq_restore(flags);
         }
         console_locked = 0;
-        console_may_schedule = 0;
         up(&console_sem);
         spin_unlock_irqrestore(&logbuf_lock, flags);
         if (wake_klogd && !oops_in_progress && waitqueue_active(&log_wait)) {
diff --git a/kernel/resource.c b/kernel/resource.c
index 0dd3a857579e..46286434af80 100644
--- a/kernel/resource.c
+++ b/kernel/resource.c
@@ -244,6 +244,7 @@ int find_next_system_ram(struct resource *res)
 
         start = res->start;
         end = res->end;
+        BUG_ON(start >= end);
 
         read_lock(&resource_lock);
         for (p = iomem_resource.child; p ; p = p->sibling) {
@@ -254,15 +255,17 @@ int find_next_system_ram(struct resource *res)
                         p = NULL;
                         break;
                 }
-                if (p->start >= start)
+                if ((p->end >= start) && (p->start < end))
                         break;
         }
         read_unlock(&resource_lock);
         if (!p)
                 return -1;
         /* copy data */
-        res->start = p->start;
-        res->end = p->end;
+        if (res->start < p->start)
+                res->start = p->start;
+        if (res->end > p->end)
+                res->end = p->end;
         return 0;
 }
 #endif