diff --git a/storage/innobase/os/os0file.cc b/storage/innobase/os/os0file.cc
index c2f01bc..1c3f320 100644
--- a/storage/innobase/os/os0file.cc
+++ b/storage/innobase/os/os0file.cc
@@ -2537,9 +2553,23 @@ LinuxAIOHandler::collect()
 			m_array->acquire();
 
 			slot->ret = events[i].res2;
-			slot->io_already_done = true;
-			slot->n_bytes = events[i].res;
-
+			/*
+			  libaio can return events[i].res as negative value as errno,
+			  but we must convert it from ulong to long to catch this.
+			*/
+			if ((long)events[i].res >= 0) {
+				slot->io_already_done = true;
+				slot->n_bytes = events[i].res;
+			} else {
+				// async IO error.
+				slot->io_already_done = false;
+				slot->n_bytes = 0;
+				char errbuf[1024];
+
+				fprintf(stderr, "Async I/O error (%ld, %s) on slot(%s).", (long)events[i].res,
+						strerror_r(events[i].res, errbuf, 1024),
+						slot->to_string().c_str());
+			}
 			m_array->release();
 		}