The only hit is the following code:
tlv_len = le16_to_cpu(tlv_hdr->tlv_len);
if (tlv_type == 0 || tlv_type > BTRFS_SEND_A_MAX
|| tlv_len > BTRFS_SEND_BUF_SIZE) {
error("invalid tlv in cmd tlv_type = %hu, tlv_len = %hu",
tlv_type, tlv_len);
@tlv_len is u16, while BTRFS_SEND_BUF_SIZE is 64K.
u16 MAX is 64K - 1, so the final check is always false.
Just remove it.
Signed-off-by: Qu Wenruo <wqu@xxxxxxxx>
---
send-stream.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/send-stream.c b/send-stream.c
index 3b8e39c9486a..25461e92c37b 100644
--- a/send-stream.c
+++ b/send-stream.c
@@ -157,8 +157,7 @@ static int read_cmd(struct btrfs_send_stream *sctx)
tlv_type = le16_to_cpu(tlv_hdr->tlv_type);
tlv_len = le16_to_cpu(tlv_hdr->tlv_len);
- if (tlv_type == 0 || tlv_type > BTRFS_SEND_A_MAX
- || tlv_len > BTRFS_SEND_BUF_SIZE) {
+ if (tlv_type == 0 || tlv_type > BTRFS_SEND_A_MAX) {
error("invalid tlv in cmd tlv_type = %hu, tlv_len = %hu",
tlv_type, tlv_len);
ret = -EINVAL;
--
2.19.1
