diff --git a/fs/bcachefs/btree_io.c b/fs/bcachefs/btree_io.c
index 56ea9a77cd4a..43a842f7409f 100644
--- a/fs/bcachefs/btree_io.c
+++ b/fs/bcachefs/btree_io.c
@@ -121,7 +121,7 @@ static void *btree_bounce_alloc(struct bch_fs *c, size_t size,
 	BUG_ON(size > c->opts.btree_node_size);
 
 	*used_mempool = false;
-	p = kvmalloc(size, __GFP_NOWARN|GFP_NOWAIT);
+	p = kvmalloc(size, __GFP_NOWARN|GFP_NOWAIT|__GFP_ZERO);
 	if (!p) {
 		*used_mempool = true;
 		p = mempool_alloc(&c->btree_bounce_pool, GFP_NOFS);