diff options
Diffstat (limited to 'fs/ksmbd/transport_rdma.c')
| -rw-r--r-- | fs/ksmbd/transport_rdma.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/fs/ksmbd/transport_rdma.c b/fs/ksmbd/transport_rdma.c index 3a7fa23ba850..a2fd5a4d4cd5 100644 --- a/fs/ksmbd/transport_rdma.c +++ b/fs/ksmbd/transport_rdma.c @@ -549,6 +549,10 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc) switch (recvmsg->type) { case SMB_DIRECT_MSG_NEGOTIATE_REQ: + if (wc->byte_len < sizeof(struct smb_direct_negotiate_req)) { + put_empty_recvmsg(t, recvmsg); + return; + } t->negotiation_requested = true; t->full_packet_received = true; wake_up_interruptible(&t->wait_status); @@ -556,10 +560,23 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc) case SMB_DIRECT_MSG_DATA_TRANSFER: { struct smb_direct_data_transfer *data_transfer = (struct smb_direct_data_transfer *)recvmsg->packet; - int data_length = le32_to_cpu(data_transfer->data_length); + unsigned int data_length; int avail_recvmsg_count, receive_credits; + if (wc->byte_len < + offsetof(struct smb_direct_data_transfer, padding)) { + put_empty_recvmsg(t, recvmsg); + return; + } + + data_length = le32_to_cpu(data_transfer->data_length); if (data_length) { + if (wc->byte_len < sizeof(struct smb_direct_data_transfer) + + (u64)data_length) { + put_empty_recvmsg(t, recvmsg); + return; + } + if (t->full_packet_received) recvmsg->first_segment = true; @@ -568,7 +585,7 @@ static void recv_done(struct ib_cq *cq, struct ib_wc *wc) else t->full_packet_received = true; - enqueue_reassembly(t, recvmsg, data_length); + enqueue_reassembly(t, recvmsg, (int)data_length); wake_up_interruptible(&t->wait_reassembly_queue); spin_lock(&t->receive_credit_lock); |