4 files changed, 19 insertions, 6 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index b7e9d60a675d..c445f8cc408d 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -356,10 +356,10 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
                 if (IS_ERR(pol))
                         goto fail_nomem_policy;
                 vma_set_policy(tmp, pol);
+                tmp->vm_mm = mm;
                 if (anon_vma_fork(tmp, mpnt))
                         goto fail_nomem_anon_vma_fork;
                 tmp->vm_flags &= ~VM_LOCKED;
-                tmp->vm_mm = mm;
                 tmp->vm_next = tmp->vm_prev = NULL;
                 file = tmp->vm_file;
                 if (file) {
diff --git a/kernel/kfifo.c b/kernel/kfifo.c
index 6b5580c57644..01a0700e873f 100644
--- a/kernel/kfifo.c
+++ b/kernel/kfifo.c
@@ -365,8 +365,6 @@ static unsigned int setup_sgl(struct __kfifo *fifo, struct scatterlist *sgl,
         n = setup_sgl_buf(sgl, fifo->data + off, nents, l);
         n += setup_sgl_buf(sgl + n, fifo->data, nents - n, len - l);
 
-        if (n)
-                sg_mark_end(sgl + n - 1);
         return n;
 }
 
diff --git a/kernel/module.c b/kernel/module.c
index eba134157ef6..2df46301a7a4 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -1538,6 +1538,7 @@ static int __unlink_module(void *_mod)
 {
         struct module *mod = _mod;
         list_del(&mod->list);
+        module_bug_cleanup(mod);
         return 0;
 }
 
@@ -2631,6 +2632,7 @@ static struct module *load_module(void __user *umod,
         if (err < 0)
                 goto ddebug;
 
+        module_bug_finalize(info.hdr, info.sechdrs, mod);
         list_add_rcu(&mod->list, &modules);
         mutex_unlock(&module_mutex);
 
@@ -2656,6 +2658,8 @@ static struct module *load_module(void __user *umod,
         mutex_lock(&module_mutex);
         /* Unlink carefully: kallsyms could be walking list. */
         list_del_rcu(&mod->list);
+        module_bug_cleanup(mod);
+
  ddebug:
         if (!mod->taints)
                 dynamic_debug_remove(info.debug);
diff --git a/kernel/smp.c b/kernel/smp.c
index 75c970c715d3..ed6aacfcb7ef 100644
--- a/kernel/smp.c
+++ b/kernel/smp.c
@@ -365,9 +365,10 @@ call:
 EXPORT_SYMBOL_GPL(smp_call_function_any);
 
 /**
- * __smp_call_function_single(): Run a function on another CPU
+ * __smp_call_function_single(): Run a function on a specific CPU
  * @cpu: The CPU to run on.
  * @data: Pre-allocated and setup data structure
+ * @wait: If true, wait until function has completed on specified CPU.
  *
  * Like smp_call_function_single(), but allow caller to pass in a
  * pre-allocated data structure. Useful for embedding @data inside
@@ -376,8 +377,10 @@ EXPORT_SYMBOL_GPL(smp_call_function_any);
 void __smp_call_function_single(int cpu, struct call_single_data *data,
                                 int wait)
 {
-        csd_lock(data);
+        unsigned int this_cpu;
+        unsigned long flags;
 
+        this_cpu = get_cpu();
         /*
          * Can deadlock when called with interrupts disabled.
          * We allow cpu's that are not yet online though, as no one else can
@@ -387,7 +390,15 @@ void __smp_call_function_single(int cpu, struct call_single_data *data,
         WARN_ON_ONCE(cpu_online(smp_processor_id()) && wait && irqs_disabled()
                      && !oops_in_progress);
 
-        generic_exec_single(cpu, data, wait);
+        if (cpu == this_cpu) {
+                local_irq_save(flags);
+                data->func(data->info);
+                local_irq_restore(flags);
+        } else {
+                csd_lock(data);
+                generic_exec_single(cpu, data, wait);
+        }
+        put_cpu();
 }
 
 /**