diff --git a/[refs] b/[refs]
index 17f3573a2ac4..52bd2d316e58 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ea7fc3336b1d657c65daf55614d4aaadd8c1c244
+refs/heads/master: 8d62fdebdaf9b866c7e236a8f5cfe90e6dba5773
diff --git a/trunk/kernel/relay.c b/trunk/kernel/relay.c
index 4311101b0ca7..e61156ea4e25 100644
--- a/trunk/kernel/relay.c
+++ b/trunk/kernel/relay.c
@@ -899,7 +899,10 @@ static size_t relay_file_read_start_pos(size_t read_pos,
 	size_t read_subbuf, padding, padding_start, padding_end;
 	size_t subbuf_size = buf->chan->subbuf_size;
 	size_t n_subbufs = buf->chan->n_subbufs;
+	size_t consumed = buf->subbufs_consumed % n_subbufs;
 
+	if (!read_pos)
+		read_pos = consumed * subbuf_size + buf->bytes_consumed;
 	read_subbuf = read_pos / subbuf_size;
 	padding = buf->padding[read_subbuf];
 	padding_start = (read_subbuf + 1) * subbuf_size - padding;