Merge 4.4.73 into android-4.4

Changes in 4.4.73
	s390/vmem: fix identity mapping
	partitions/msdos: FreeBSD UFS2 file systems are not recognized
	ARM: dts: imx6dl: Fix the VDD_ARM_CAP voltage for 396MHz operation
	staging: rtl8192e: rtl92e_fill_tx_desc fix write to mapped out memory.
	Call echo service immediately after socket reconnect
	net: xilinx_emaclite: fix freezes due to unordered I/O
	net: xilinx_emaclite: fix receive buffer overflow
	ipv6: Handle IPv4-mapped src to in6addr_any dst.
	ipv6: Inhibit IPv4-mapped src address on the wire.
	NET: Fix /proc/net/arp for AX.25
	NET: mkiss: Fix panic
	net: hns: Fix the device being used for dma mapping during TX
	sierra_net: Skip validating irrelevant fields for IDLE LSIs
	sierra_net: Add support for IPv6 and Dual-Stack Link Sense Indications
	i2c: piix4: Fix request_region size
	ipv6: Fix IPv6 packet loss in scenarios involving roaming + snooping switches
	PM / runtime: Avoid false-positive warnings from might_sleep_if()
	jump label: pass kbuild_cflags when checking for asm goto support
	kasan: respect /proc/sys/kernel/traceoff_on_warning
	log2: make order_base_2() behave correctly on const input value zero
	ethtool: do not vzalloc(0) on registers dump
	fscache: Fix dead object requeue
	fscache: Clear outstanding writes when disabling a cookie
	FS-Cache: Initialise stores_lock in netfs cookie
	ipv6: fix flow labels when the traffic class is non-0
	drm/nouveau: prevent userspace from deleting client object
	drm/nouveau/fence/g84-: protect against concurrent access to semaphore buffers
	net/mlx4_core: Avoid command timeouts during VF driver device shutdown
	gianfar: synchronize DMA API usage by free_skb_rx_queue w/ gfar_new_page
	pinctrl: berlin-bg4ct: fix the value for "sd1a" of pin SCRD0_CRD_PRES
	net: adaptec: starfire: add checks for dma mapping errors
	parisc, parport_gsc: Fixes for printk continuation lines
	drm/nouveau: Don't enabling polling twice on runtime resume
	drm/ast: Fixed system hanged if disable P2A
	ravb: unmap descriptors when freeing rings
	nfs: Fix "Don't increment lock sequence ID after NFS4ERR_MOVED"
	r8152: re-schedule napi for tx
	r8152: fix rtl8152_post_reset function
	r8152: avoid start_xmit to schedule napi when napi is disabled
	sctp: sctp_addr_id2transport should verify the addr before looking up assoc
	romfs: use different way to generate fsid for BLOCK or MTD
	proc: add a schedule point in proc_pid_readdir()
	tipc: ignore requests when the connection state is not CONNECTED
	xtensa: don't use linux IRQ #0
	s390/kvm: do not rely on the ILC on kvm host protection fauls
	sparc64: make string buffers large enough
	Linux 4.4.73

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

9 files changed, 56 insertions, 26 deletions

diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 29edf74846fc..b6bca625b0d2 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -886,9 +886,12 @@ static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
 	if (regs.len > reglen)
 		regs.len = reglen;
 
-	regbuf = vzalloc(reglen);
-	if (reglen && !regbuf)
-		return -ENOMEM;
+	regbuf = NULL;
+	if (reglen) {
+		regbuf = vzalloc(reglen);
+		if (!regbuf)
+			return -ENOMEM;
+	}
 
 	ops->get_regs(dev, &regs, regbuf);
 
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 59b3e0e8fd51..711b4dfa17c3 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -1250,7 +1250,7 @@ void __init arp_init(void)
 /*
  *	ax25 -> ASCII conversion
  */
-static char *ax2asc2(ax25_address *a, char *buf)
+static void ax2asc2(ax25_address *a, char *buf)
 {
 	char c, *s;
 	int n;
@@ -1272,10 +1272,10 @@ static char *ax2asc2(ax25_address *a, char *buf)
 	*s++ = n + '0';
 	*s++ = '\0';
 
-	if (*buf == '\0' || *buf == '-')
-		return "*";
-
-	return buf;
+	if (*buf == '\0' || *buf == '-') {
+		buf[0] = '*';
+		buf[1] = '\0';
+	}
 }
 #endif /* CONFIG_AX25 */
 
@@ -1309,7 +1309,7 @@ static void arp_format_neigh_entry(struct seq_file *seq,
 	}
 #endif
 	sprintf(tbuf, "%pI4", n->primary_key);
-	seq_printf(seq, "%-16s 0x%-10x0x%-10x%s     *        %s\n",
+	seq_printf(seq, "%-16s 0x%-10x0x%-10x%-17s     *        %s\n",
 		   tbuf, hatype, arp_state_to_flags(n), hbuffer, dev->name);
 	read_unlock(&n->lock);
 }
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 0c6df2b4ab77..ce3b8021cd2a 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -3263,9 +3263,15 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
 			}
 
 			if (idev) {
-				if (idev->if_flags & IF_READY)
-					/* device is already configured. */
+				if (idev->if_flags & IF_READY) {
+					/* device is already configured -
+					 * but resend MLD reports, we might
+					 * have roamed and need to update
+					 * multicast snooping switches
+					 */
+					ipv6_mc_up(idev);
 					break;
+				}
 				idev->if_flags |= IF_READY;
 			}
 
diff --git a/net/ipv6/datagram.c b/net/ipv6/datagram.c
index cf2dfb222230..56528e9f3e01 100644
--- a/net/ipv6/datagram.c
+++ b/net/ipv6/datagram.c
@@ -76,18 +76,22 @@ static int __ip6_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int a
 		}
 	}
 
-	addr_type = ipv6_addr_type(&usin->sin6_addr);
-
-	if (addr_type == IPV6_ADDR_ANY) {
+	if (ipv6_addr_any(&usin->sin6_addr)) {
 		/*
 		 *	connect to self
 		 */
-		usin->sin6_addr.s6_addr[15] = 0x01;
+		if (ipv6_addr_v4mapped(&sk->sk_v6_rcv_saddr))
+			ipv6_addr_set_v4mapped(htonl(INADDR_LOOPBACK),
+					       &usin->sin6_addr);
+		else
+			usin->sin6_addr = in6addr_loopback;
 	}
 
+	addr_type = ipv6_addr_type(&usin->sin6_addr);
+
 	daddr = &usin->sin6_addr;
 
-	if (addr_type == IPV6_ADDR_MAPPED) {
+	if (addr_type & IPV6_ADDR_MAPPED) {
 		struct sockaddr_in sin;
 
 		if (__ipv6_only_sock(sk)) {
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 1db17efe36c1..19c0d67ce8c4 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1004,6 +1004,9 @@ static int ip6_dst_lookup_tail(struct net *net, const struct sock *sk,
 		}
 	}
 #endif
+	if (ipv6_addr_v4mapped(&fl6->saddr) &&
+	    !(ipv6_addr_v4mapped(&fl6->daddr) || ipv6_addr_any(&fl6->daddr)))
+		return -EAFNOSUPPORT;
 
 	return 0;
 
diff --git a/net/ipv6/tcp_ipv6.c b/net/ipv6/tcp_ipv6.c
index 7d8063f8a9c9..4618f52a4abe 100644
--- a/net/ipv6/tcp_ipv6.c
+++ b/net/ipv6/tcp_ipv6.c
@@ -149,8 +149,13 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
 	 *	connect() to INADDR_ANY means loopback (BSD'ism).
 	 */
 
-	if (ipv6_addr_any(&usin->sin6_addr))
-		usin->sin6_addr.s6_addr[15] = 0x1;
+	if (ipv6_addr_any(&usin->sin6_addr)) {
+		if (ipv6_addr_v4mapped(&sk->sk_v6_rcv_saddr))
+			ipv6_addr_set_v4mapped(htonl(INADDR_LOOPBACK),
+					       &usin->sin6_addr);
+		else
+			usin->sin6_addr = in6addr_loopback;
+	}
 
 	addr_type = ipv6_addr_type(&usin->sin6_addr);
 
@@ -189,7 +194,7 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
 	 *	TCP over IPv4
 	 */
 
-	if (addr_type == IPV6_ADDR_MAPPED) {
+	if (addr_type & IPV6_ADDR_MAPPED) {
 		u32 exthdrlen = icsk->icsk_ext_hdr_len;
 		struct sockaddr_in sin;
 
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 156a13c7ada8..cedced59ce15 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1136,6 +1136,10 @@ int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
 			if (addr_len < SIN6_LEN_RFC2133)
 				return -EINVAL;
 			daddr = &sin6->sin6_addr;
+			if (ipv6_addr_any(daddr) &&
+			    ipv6_addr_v4mapped(&np->saddr))
+				ipv6_addr_set_v4mapped(htonl(INADDR_LOOPBACK),
+						       daddr);
 			break;
 		case AF_INET:
 			goto do_udp_sendmsg;
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index c96d666cef29..956141b71619 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -235,8 +235,12 @@ static struct sctp_transport *sctp_addr_id2transport(struct sock *sk,
 					      sctp_assoc_t id)
 {
 	struct sctp_association *addr_asoc = NULL, *id_asoc = NULL;
-	struct sctp_transport *transport;
+	struct sctp_af *af = sctp_get_af_specific(addr->ss_family);
 	union sctp_addr *laddr = (union sctp_addr *)addr;
+	struct sctp_transport *transport;
+
+	if (sctp_verify_addr(sk, laddr, af->sockaddr_len))
+		return NULL;
 
 	addr_asoc = sctp_endpoint_lookup_assoc(sctp_sk(sk)->ep,
 					       laddr,
diff --git a/net/tipc/server.c b/net/tipc/server.c
index 922e04a43396..50f5b0ca7b3c 100644
--- a/net/tipc/server.c
+++ b/net/tipc/server.c
@@ -452,6 +452,11 @@ int tipc_conn_sendmsg(struct tipc_server *s, int conid,
 	if (!con)
 		return -EINVAL;
 
+	if (!test_bit(CF_CONNECTED, &con->flags)) {
+		conn_put(con);
+		return 0;
+	}
+
 	e = tipc_alloc_entry(data, len);
 	if (!e) {
 		conn_put(con);
@@ -465,12 +470,8 @@ int tipc_conn_sendmsg(struct tipc_server *s, int conid,
 	list_add_tail(&e->list, &con->outqueue);
 	spin_unlock_bh(&con->outqueue_lock);
 
-	if (test_bit(CF_CONNECTED, &con->flags)) {
-		if (!queue_work(s->send_wq, &con->swork))
-			conn_put(con);
-	} else {
+	if (!queue_work(s->send_wq, &con->swork))
 		conn_put(con);
-	}
 	return 0;
 }
 
@@ -494,7 +495,7 @@ static void tipc_send_to_sock(struct tipc_conn *con)
 	int ret;
 
 	spin_lock_bh(&con->outqueue_lock);
-	while (1) {
+	while (test_bit(CF_CONNECTED, &con->flags)) {
 		e = list_entry(con->outqueue.next, struct outqueue_entry,
 			       list);
 		if ((struct list_head *) e == &con->outqueue)