[PATCH] Exports address to the page fault notifier.

[Tiago Vignatti]

Signed-off-by: Tiago Vignatti <[EMAIL PROTECTED]>
---
 arch/i386/mm/fault.c   |    9 +++++----
 include/linux/kdebug.h |    1 +
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/arch/i386/mm/fault.c b/arch/i386/mm/fault.c
index 01ffdd4..c405802 100644
--- a/arch/i386/mm/fault.c
+++ b/arch/i386/mm/fault.c
@@ -47,14 +47,15 @@ int unregister_page_fault_notifier(struct notifier_block 
*nb)
 }
 EXPORT_SYMBOL_GPL(unregister_page_fault_notifier);
 
-static inline int notify_page_fault(struct pt_regs *regs, long err)
+static inline int notify_page_fault(struct pt_regs *regs, long err, unsigned 
long address)
 {
        struct die_args args = {
                .regs = regs,
                .str = "page fault",
                .err = err,
                .trapnr = 14,
-               .signr = SIGSEGV
+               .signr = SIGSEGV,
+               .address = address
        };
        return atomic_notifier_call_chain(&notify_page_fault_chain,
                                          DIE_PAGE_FAULT, &args);
@@ -330,7 +331,7 @@ fastcall void __kprobes do_page_fault(struct pt_regs *regs,
        if (unlikely(address >= TASK_SIZE)) {
                if (!(error_code & 0x0000000d) && vmalloc_fault(address) >= 0)
                        return;
-               if (notify_page_fault(regs, error_code) == NOTIFY_STOP)
+               if (notify_page_fault(regs, error_code, address) == NOTIFY_STOP)
                        return;
                /*
                 * Don't take the mm semaphore here. If we fixup a prefetch
@@ -339,7 +340,7 @@ fastcall void __kprobes do_page_fault(struct pt_regs *regs,
                goto bad_area_nosemaphore;
        }
 
-       if (notify_page_fault(regs, error_code) == NOTIFY_STOP)
+       if (notify_page_fault(regs, error_code, address) == NOTIFY_STOP)
                return;
 
        /* It's safe to allow irq's after cr2 has been saved and the vmalloc
diff --git a/include/linux/kdebug.h b/include/linux/kdebug.h
index 5db38d6..e8005c2 100644
--- a/include/linux/kdebug.h
+++ b/include/linux/kdebug.h
@@ -9,6 +9,7 @@ struct die_args {
        long err;
        int trapnr;
        int signr;
+       unsigned long address;
 };
 
 int register_die_notifier(struct notifier_block *nb);
-- 
1.5.2.4

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