From: Ingo Molnar <mingo@elte.hu>

on x86_64 this also needs the patch below - NULL means 'current'.


Signed-off-by: Andrew Morton <akpm@osdl.org>
---

 kernel/lockdep.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff -puN kernel/lockdep.c~lockdep-show-held-locks-when-showing-a-stackdump-fix kernel/lockdep.c
--- a/kernel/lockdep.c~lockdep-show-held-locks-when-showing-a-stackdump-fix
+++ a/kernel/lockdep.c
@@ -420,7 +420,11 @@ static void print_lock(struct held_lock 
 
 static void lockdep_print_held_locks(struct task_struct *curr)
 {
-	int i, depth = curr->lockdep_depth;
+	int i, depth;
+
+	if (!curr)
+		curr = current;
+	depth = curr->lockdep_depth;
 
 	if (!depth) {
 		printk("no locks held by %s/%d.\n", curr->comm, curr->pid);
_