1 files changed, 3 insertions, 0 deletions
diff --git a/riscv/mmu.h b/riscv/mmu.h
index 3da2c92..1f8d34b 100644
--- a/riscv/mmu.h
+++ b/riscv/mmu.h
@@ -219,6 +219,9 @@ private:
   inline trigger_matched_t *trigger_exception(trigger_operation_t operation,
       reg_t address, reg_t data)
   {
+    if (!proc) {
+      return NULL;
+    }
     int match = proc->trigger_match(operation, address, data);
     if (match == -1)
       return NULL;