3 files changed, 18 insertions, 9 deletions

diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index a331ec38af9e..38946c6e8433 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -1410,7 +1410,10 @@ ENTRY(paranoid_exit)
 paranoid_swapgs:
         TRACE_IRQS_IRETQ 0
         SWAPGS_UNSAFE_STACK
+        RESTORE_ALL 8
+        jmp irq_return
 paranoid_restore:
+        TRACE_IRQS_IRETQ 0
         RESTORE_ALL 8
         jmp irq_return
 paranoid_userspace:
diff --git a/kernel/lockdep.c b/kernel/lockdep.c
index b0f011866969..accb40cdb12a 100644
--- a/kernel/lockdep.c
+++ b/kernel/lockdep.c
@@ -2490,13 +2490,20 @@ static int mark_lock(struct task_struct *curr, struct held_lock *this,
 void lockdep_init_map(struct lockdep_map *lock, const char *name,
                       struct lock_class_key *key, int subclass)
 {
-        if (unlikely(!debug_locks))
+        lock->class_cache = NULL;
+#ifdef CONFIG_LOCK_STAT
+        lock->cpu = raw_smp_processor_id();
+#endif
+
+        if (DEBUG_LOCKS_WARN_ON(!name)) {
+                lock->name = "NULL";
                 return;
+        }
+
+        lock->name = name;
 
         if (DEBUG_LOCKS_WARN_ON(!key))
                 return;
-        if (DEBUG_LOCKS_WARN_ON(!name))
-                return;
         /*
          * Sanity check, the lock-class key must be persistent:
          */
@@ -2505,12 +2512,11 @@ void lockdep_init_map(struct lockdep_map *lock, const char *name,
                 DEBUG_LOCKS_WARN_ON(1);
                 return;
         }
-        lock->name = name;
         lock->key = key;
-        lock->class_cache = NULL;
-#ifdef CONFIG_LOCK_STAT
-        lock->cpu = raw_smp_processor_id();
-#endif
+
+        if (unlikely(!debug_locks))
+                return;
+
         if (subclass)
                 register_lock_class(lock, subclass, 1);
 }
diff --git a/kernel/panic.c b/kernel/panic.c
index 934fb377f4b3..3dcaa1661357 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -221,7 +221,7 @@ void add_taint(unsigned flag)
          * post-warning case.
          */
         if (flag != TAINT_CRAP && flag != TAINT_WARN && __debug_locks_off())
-                printk(KERN_WARNING "Disabling lockdep due to kernel taint\n");
+                printk(KERN_WARNING "Disabling lock debugging due to kernel taint\n");
 
         set_bit(flag, &tainted_mask);
 }