diff --git a/[refs] b/[refs]
index 96fc8a14a7e6..854961a6569f 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b8d0638a98aa4a42ff322234b882487cd74e5c52
+refs/heads/master: 85b5aaa624aac568b8a3a88dbe4de6628c7cc527
diff --git a/trunk/drivers/block/rbd.c b/trunk/drivers/block/rbd.c
index 52f9420704c7..6ec9d53806c5 100644
--- a/trunk/drivers/block/rbd.c
+++ b/trunk/drivers/block/rbd.c
@@ -554,7 +554,7 @@ static void zero_bio_chain(struct bio *chain, int start_ofs)
 				buf = bvec_kmap_irq(bv, &flags);
 				memset(buf + remainder, 0,
 				       bv->bv_len - remainder);
-				bvec_kunmap_irq(bv, &flags);
+				bvec_kunmap_irq(buf, &flags);
 			}
 			pos += bv->bv_len;
 		}