Could someone who reproduces this problem apply the following
patch and see if the WARN_ON triggers?
diff -u linux-2.6.11/mm/memory.c-o linux-2.6.11/mm/memory.c
--- linux-2.6.11/mm/memory.c-o 2005-03-02 08:38:08.000000000 +0100
+++ linux-2.6.11/mm/memory.c 2005-04-27 15:48:19.777104735 +0200
@@ -94,6 +94,7 @@
if (pmd_none(*pmd))
return;
if (unlikely(pmd_bad(*pmd))) {
+ printk("%s:%d: ", current->comm, current->pid);
pmd_ERROR(*pmd);
pmd_clear(pmd);
return;
@@ -113,6 +114,7 @@
unsigned long addr = start, next;
pmd_t *pmd, *__pmd;
+ WARN_ON(start == end);
if (pud_none(*pud))
return;
if (unlikely(pud_bad(*pud))) {
-
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