1 files changed, 19 insertions, 0 deletions

diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h
index 443d9800ca3f..04bdaf01112c 100644
--- a/include/linux/kprobes.h
+++ b/include/linux/kprobes.h
@@ -458,4 +458,23 @@ static inline bool is_kprobe_optinsn_slot(unsigned long addr)
 }
 #endif
 
+/* Returns true if kprobes handled the fault */
+static nokprobe_inline bool kprobe_page_fault(struct pt_regs *regs,
+                                              unsigned int trap)
+{
+        if (!kprobes_built_in())
+                return false;
+        if (user_mode(regs))
+                return false;
+        /*
+         * To be potentially processing a kprobe fault and to be allowed
+         * to call kprobe_running(), we have to be non-preemptible.
+         */
+        if (preemptible())
+                return false;
+        if (!kprobe_running())
+                return false;
+        return kprobe_fault_handler(regs, trap);
+}
+
 #endif /* _LINUX_KPROBES_H */