avr32: Fix broken pte dump code in do_page_fault()

The per-task page tables only cover the first 2GiB of the address
space. For kernel addresses, we need to do the lookup in init's page
tables.

This is a temporary workaround until we modify the per-task page
tables to cover the whole 4GiB address space.

Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/avr32/mm/fault.c b/arch/avr32/mm/fault.c
index 6560cb18b4e3..ce4e4296b954 100644
--- a/arch/avr32/mm/fault.c
+++ b/arch/avr32/mm/fault.c
@@ -189,6 +189,8 @@ no_context:
 
         page = sysreg_read(PTBR);
         printk(KERN_ALERT "ptbr = %08lx", page);
+        if (address >= TASK_SIZE)
+                page = (unsigned long)swapper_pg_dir;
         if (page) {
                 page = ((unsigned long *)page)[address >> 22];
                 printk(" pgd = %08lx", page);