blackfin: a couple of task->mm handling fixes

[sfrench/cifs-2.6.git] / lib / list_debug.c

diff --git a/lib/list_debug.c b/lib/list_debug.c
index 3810b481f940bac6450f3e7342ec5dbfdb385318..23a5e031cd8bc43605655da59bce57eadb3304b8 100644 (file)
--- a/lib/list_debug.c
+++ b/lib/list_debug.c
@@ -31,6 +31,9 @@ void __list_add(struct list_head *new,
                "list_add corruption. prev->next should be "
                "next (%p), but was %p. (prev=%p).\n",
                next, prev->next, prev);
+       WARN(new == prev || new == next,
+            "list_add double add: new=%p, prev=%p, next=%p.\n",
+            new, prev, next);
        next->prev = new;
        new->next = next;
        new->prev = prev;