--- x/drivers/scsi/scsi_lib.c
+++ y/drivers/scsi/scsi_lib.c
@@ -1037,6 +1037,7 @@ blk_status_t scsi_alloc_sgtables(struct
 	/*
 	 * If sg table allocation fails, requeue request later.
 	 */
+	cmd->sdb.table.sgl = NULL;
 	if (unlikely(sg_alloc_table_chained(&cmd->sdb.table, nr_segs,
 			cmd->sdb.table.sgl, SCSI_INLINE_SG_CNT)))
 		return BLK_STS_RESOURCE;