[NET]: Fix loopback crashes when multiqueue is enabled.

[linux.git] / net / bluetooth / hci_sock.c

diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index f928d2b2a17dac5c81a7660108e895b5640a1263..1dae3dfc66a9dd6a1ad90cfc790dea4f28fb85ef 100644 (file)
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -375,7 +375,7 @@ static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock,
                copied = len;
        }
 
-       skb->h.raw = skb->data;
+       skb_reset_transport_header(skb);
        err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied);
 
        hci_sock_cmsg(sk, msg, skb);
@@ -499,6 +499,15 @@ static int hci_sock_setsockopt(struct socket *sock, int level, int optname, char
                break;
 
        case HCI_FILTER:
+               {
+                       struct hci_filter *f = &hci_pi(sk)->filter;
+
+                       uf.type_mask = f->type_mask;
+                       uf.opcode    = f->opcode;
+                       uf.event_mask[0] = *((u32 *) f->event_mask + 0);
+                       uf.event_mask[1] = *((u32 *) f->event_mask + 1);
+               }
+
                len = min_t(unsigned int, len, sizeof(uf));
                if (copy_from_user(&uf, optval, len)) {
                        err = -EFAULT;
@@ -656,7 +665,8 @@ static int hci_sock_dev_event(struct notifier_block *this, unsigned long event,
                /* Detach sockets from device */
                read_lock(&hci_sk_list.lock);
                sk_for_each(sk, node, &hci_sk_list.head) {
-                       bh_lock_sock(sk);
+                       local_bh_disable();
+                       bh_lock_sock_nested(sk);
                        if (hci_pi(sk)->hdev == hdev) {
                                hci_pi(sk)->hdev = NULL;
                                sk->sk_err = EPIPE;
@@ -666,6 +676,7 @@ static int hci_sock_dev_event(struct notifier_block *this, unsigned long event,
                                hci_dev_put(hdev);
                        }
                        bh_unlock_sock(sk);
+                       local_bh_enable();
                }
                read_unlock(&hci_sk_list.lock);
        }