diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 9e5b8c272eecc9121e8d3e064f30220c71c7e957..20d8a9825f96a8f052b4f4c2f056d2482ae64452 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1828,6 +1828,7 @@ void blk_fill_rwbs(char *rwbs, u32 rw, int bytes)
 
 	rwbs[i] = '\0';
 }
+EXPORT_SYMBOL_GPL(blk_fill_rwbs);
 
 #endif /* CONFIG_EVENT_TRACING */