diff --git a/src/backend/access/transam/slru.c b/src/backend/access/transam/slru.c
index 2dbc65b125..3903a130a1 100644
--- a/src/backend/access/transam/slru.c
+++ b/src/backend/access/transam/slru.c
@@ -920,18 +920,29 @@ SlruReportIOError(SlruCtl ctl, int pageno, TransactionId xid)
 							   path, offset)));
 			break;
 		case SLRU_READ_FAILED:
-			ereport(ERROR,
-					(errcode_for_file_access(),
-					 errmsg("could not access status of transaction %u", xid),
-					 errdetail("Could not read from file \"%s\" at offset %u: %m.",
-							   path, offset)));
+			if (errno)
+				ereport(ERROR,
+						(errcode_for_file_access(),
+						 errmsg("could not access status of transaction %u", xid),
+						 errdetail("Could not read from file \"%s\" at offset %u: %m.",
+								   path, offset)));
+			else
+				ereport(ERROR,
+						(errmsg("could not access status of transaction %u", xid),
+						 errdetail("Could not read from file \"%s\" at offset %u: read too few bytes.", path, offset)));
 			break;
 		case SLRU_WRITE_FAILED:
-			ereport(ERROR,
-					(errcode_for_file_access(),
-					 errmsg("could not access status of transaction %u", xid),
-					 errdetail("Could not write to file \"%s\" at offset %u: %m.",
-							   path, offset)));
+			if (errno)
+				ereport(ERROR,
+						(errcode_for_file_access(),
+						 errmsg("could not access status of transaction %u", xid),
+						 errdetail("Could not write to file \"%s\" at offset %u: %m.",
+								   path, offset)));
+			else
+				ereport(ERROR,
+						(errmsg("could not access status of transaction %u", xid),
+						 errdetail("Could not write to file \"%s\" at offset %u: wrote too few bytes.",
+								   path, offset)));
 			break;
 		case SLRU_FSYNC_FAILED:
 			ereport(data_sync_elevel(ERROR),