diff --git a/fs/bio.c b/fs/bio.c
index bee4dec..6a637b5 100644
--- a/fs/bio.c
+++ b/fs/bio.c
@@ -111,6 +111,7 @@
 {
 	memset(bio, 0, sizeof(*bio));
 	bio->bi_flags = 1 << BIO_UPTODATE;
+	bio->bi_comp_cpu = -1;
 	atomic_set(&bio->bi_cnt, 1);
 }