#include <linux/signal.h>
#include <linux/mm.h>
#include <linux/init.h>
+#include <linux/kprobes.h>
+#include <linux/uaccess.h>
#include <asm/system.h>
#include <asm/pgtable.h>
#include <asm/tlbflush.h>
-#include <asm/uaccess.h>
#include "fault.h"
+
+#ifdef CONFIG_KPROBES
+static inline int notify_page_fault(struct pt_regs *regs, unsigned int fsr)
+{
+ int ret = 0;
+
+ if (!user_mode(regs)) {
+ /* kprobe_running() needs smp_processor_id() */
+ preempt_disable();
+ if (kprobe_running() && kprobe_fault_handler(regs, fsr))
+ ret = 1;
+ preempt_enable();
+ }
+
+ return ret;
+}
+#else
+static inline int notify_page_fault(struct pt_regs *regs, unsigned int fsr)
+{
+ return 0;
+}
+#endif
+
/*
* This is useful to dump out the page tables associated with
* 'addr' in mm 'mm'.
return fault;
out_of_memory:
- if (!is_init(tsk))
+ if (!is_global_init(tsk))
goto out;
/*
return fault;
}
-static int
+static int __kprobes
do_page_fault(unsigned long addr, unsigned int fsr, struct pt_regs *regs)
{
struct task_struct *tsk;
struct mm_struct *mm;
int fault, sig, code;
+ if (notify_page_fault(regs, fsr))
+ return 0;
+
tsk = current;
mm = tsk->mm;
* interrupt or a critical region, and should only copy the information
* from the master page table, nothing more.
*/
-static int
+static int __kprobes
do_translation_fault(unsigned long addr, unsigned int fsr,
struct pt_regs *regs)
{