Re: Linux 4.9.164

From: Greg KH
Date: Tue Mar 19 2019 - 08:45:06 EST

diff --git a/Makefile b/Makefile
index 8a5330e279ad..e1bcc76388dc 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
VERSION = 4
PATCHLEVEL = 9
-SUBLEVEL = 163
+SUBLEVEL = 164
EXTRAVERSION =
NAME = Roaring Lionus

diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h
index 1ce6ae35f6a2..c42c9d50c8ee 100644
--- a/arch/x86/events/perf_event.h
+++ b/arch/x86/events/perf_event.h
@@ -996,12 +996,12 @@ static inline int intel_pmu_init(void)
return 0;
}

-static inline int intel_cpuc_prepare(struct cpu_hw_event *cpuc, int cpu)
+static inline int intel_cpuc_prepare(struct cpu_hw_events *cpuc, int cpu)
{
return 0;
}

-static inline void intel_cpuc_finish(struct cpu_hw_event *cpuc)
+static inline void intel_cpuc_finish(struct cpu_hw_events *cpuc)
{
}

diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c
index b62e6ab66b31..67414616eb35 100644
--- a/drivers/md/raid10.c
+++ b/drivers/md/raid10.c
@@ -4489,7 +4489,6 @@ static sector_t reshape_request(struct mddev *mddev, sector_t sector_nr,
atomic_inc(&r10_bio->remaining);
read_bio->bi_next = NULL;
generic_make_request(read_bio);
- sector_nr += nr_sectors;
sectors_done += nr_sectors;
if (sector_nr <= last)
goto read_more;
diff --git a/drivers/mmc/host/tmio_mmc_pio.c b/drivers/mmc/host/tmio_mmc_pio.c
index 700567603107..0fc1f73b0d23 100644
--- a/drivers/mmc/host/tmio_mmc_pio.c
+++ b/drivers/mmc/host/tmio_mmc_pio.c
@@ -675,7 +675,7 @@ static bool __tmio_mmc_sdcard_irq(struct tmio_mmc_host *host,
return false;
}

-static void tmio_mmc_sdio_irq(int irq, void *devid)
+static bool tmio_mmc_sdio_irq(int irq, void *devid)
{
struct tmio_mmc_host *host = devid;
struct mmc_host *mmc = host->mmc;
@@ -684,7 +684,7 @@ static void tmio_mmc_sdio_irq(int irq, void *devid)
unsigned int sdio_status;

if (!(pdata->flags & TMIO_MMC_SDIO_IRQ))
- return;
+ return false;

status = sd_ctrl_read16(host, CTL_SDIO_STATUS);
ireg = status & TMIO_SDIO_MASK_ALL & ~host->sdcard_irq_mask;
@@ -697,6 +697,8 @@ static void tmio_mmc_sdio_irq(int irq, void *devid)

if (mmc->caps & MMC_CAP_SDIO_IRQ && ireg & TMIO_SDIO_STAT_IOIRQ)
mmc_signal_sdio_irq(mmc);
+
+ return ireg;
}

irqreturn_t tmio_mmc_irq(int irq, void *devid)
@@ -718,9 +720,10 @@ irqreturn_t tmio_mmc_irq(int irq, void *devid)
if (__tmio_mmc_sdcard_irq(host, ireg, status))
return IRQ_HANDLED;

- tmio_mmc_sdio_irq(irq, devid);
+ if (tmio_mmc_sdio_irq(irq, devid))
+ return IRQ_HANDLED;

- return IRQ_HANDLED;
+ return IRQ_NONE;
}
EXPORT_SYMBOL(tmio_mmc_irq);

diff --git a/drivers/net/ethernet/mellanox/mlx4/cmd.c b/drivers/net/ethernet/mellanox/mlx4/cmd.c
index dae9dcfa8f36..e5283387097f 100644
--- a/drivers/net/ethernet/mellanox/mlx4/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx4/cmd.c
@@ -2633,6 +2633,8 @@ int mlx4_cmd_use_events(struct mlx4_dev *dev)
if (!priv->cmd.context)
return -ENOMEM;

+ if (mlx4_is_mfunc(dev))
+ mutex_lock(&priv->cmd.slave_cmd_mutex);
down_write(&priv->cmd.switch_sem);
for (i = 0; i < priv->cmd.max_cmds; ++i) {
priv->cmd.context[i].token = i;
@@ -2658,6 +2660,8 @@ int mlx4_cmd_use_events(struct mlx4_dev *dev)
down(&priv->cmd.poll_sem);
priv->cmd.use_events = 1;
up_write(&priv->cmd.switch_sem);
+ if (mlx4_is_mfunc(dev))
+ mutex_unlock(&priv->cmd.slave_cmd_mutex);

return err;
}
@@ -2670,6 +2674,8 @@ void mlx4_cmd_use_polling(struct mlx4_dev *dev)
struct mlx4_priv *priv = mlx4_priv(dev);
int i;

+ if (mlx4_is_mfunc(dev))
+ mutex_lock(&priv->cmd.slave_cmd_mutex);
down_write(&priv->cmd.switch_sem);
priv->cmd.use_events = 0;

@@ -2677,9 +2683,12 @@ void mlx4_cmd_use_polling(struct mlx4_dev *dev)
down(&priv->cmd.event_sem);

kfree(priv->cmd.context);
+ priv->cmd.context = NULL;

up(&priv->cmd.poll_sem);
up_write(&priv->cmd.switch_sem);
+ if (mlx4_is_mfunc(dev))
+ mutex_unlock(&priv->cmd.slave_cmd_mutex);
}

struct mlx4_cmd_mailbox *mlx4_alloc_cmd_mailbox(struct mlx4_dev *dev)
diff --git a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
index 9d1a7d5ae835..79944302dd46 100644
--- a/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
+++ b/drivers/net/ethernet/mellanox/mlx4/resource_tracker.c
@@ -2677,13 +2677,13 @@ static int qp_get_mtt_size(struct mlx4_qp_context *qpc)
int total_pages;
int total_mem;
int page_offset = (be32_to_cpu(qpc->params2) >> 6) & 0x3f;
+ int tot;

sq_size = 1 << (log_sq_size + log_sq_sride + 4);
rq_size = (srq|rss|xrc) ? 0 : (1 << (log_rq_size + log_rq_stride + 4));
total_mem = sq_size + rq_size;
- total_pages =
- roundup_pow_of_two((total_mem + (page_offset << 6)) >>
- page_shift);
+ tot = (total_mem + (page_offset << 6)) >> page_shift;
+ total_pages = !tot ? 1 : roundup_pow_of_two(tot);

return total_pages;
}
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 71836a7f56b0..480883a7a3e5 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -457,7 +457,7 @@ static int ravb_dmac_init(struct net_device *ndev)
RCR_EFFS | RCR_ENCF | RCR_ETS0 | RCR_ESF | 0x18000000, RCR);

/* Set FIFO size */
- ravb_write(ndev, TGC_TQP_AVBMODE1 | 0x00222200, TGC);
+ ravb_write(ndev, TGC_TQP_AVBMODE1 | 0x00112200, TGC);

/* Timestamp enable */
ravb_write(ndev, TCCR_TFEN, TCCR);
diff --git a/drivers/net/ipvlan/ipvlan_main.c b/drivers/net/ipvlan/ipvlan_main.c
index 4a2609c4dd6e..72fb55ca27f3 100644
--- a/drivers/net/ipvlan/ipvlan_main.c
+++ b/drivers/net/ipvlan/ipvlan_main.c
@@ -463,7 +463,12 @@ static int ipvlan_nl_changelink(struct net_device *dev,
struct ipvl_port *port = ipvlan_port_get_rtnl(ipvlan->phy_dev);
int err = 0;

- if (data && data[IFLA_IPVLAN_MODE]) {
+ if (!data)
+ return 0;
+ if (!ns_capable(dev_net(ipvlan->phy_dev)->user_ns, CAP_NET_ADMIN))
+ return -EPERM;
+
+ if (data[IFLA_IPVLAN_MODE]) {
u16 nmode = nla_get_u16(data[IFLA_IPVLAN_MODE]);

err = ipvlan_set_port_mode(port, nmode);
@@ -530,6 +535,8 @@ static int ipvlan_link_new(struct net *src_net, struct net_device *dev,
struct ipvl_dev *tmp = netdev_priv(phy_dev);

phy_dev = tmp->phy_dev;
+ if (!ns_capable(dev_net(phy_dev)->user_ns, CAP_NET_ADMIN))
+ return -EPERM;
} else if (!netif_is_ipvlan_port(phy_dev)) {
err = ipvlan_port_create(phy_dev);
if (err < 0)
diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c
index 09deef4bed09..a9bbdcec0bad 100644
--- a/drivers/net/phy/mdio_bus.c
+++ b/drivers/net/phy/mdio_bus.c
@@ -319,7 +319,6 @@ int __mdiobus_register(struct mii_bus *bus, struct module *owner)
err = device_register(&bus->dev);
if (err) {
pr_err("mii_bus %s failed to register\n", bus->id);
- put_device(&bus->dev);
return -EINVAL;
}

diff --git a/drivers/net/ppp/pptp.c b/drivers/net/ppp/pptp.c
index 3045c9662ed6..5a8befdfa5e4 100644
--- a/drivers/net/ppp/pptp.c
+++ b/drivers/net/ppp/pptp.c
@@ -541,6 +541,7 @@ static void pptp_sock_destruct(struct sock *sk)
pppox_unbind_sock(sk);
}
skb_queue_purge(&sk->sk_receive_queue);
+ dst_release(rcu_dereference_protected(sk->sk_dst_cache, 1));
}

static int pptp_create(struct net *net, struct socket *sock, int kern)
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 373713faa1f5..016f5da425ab 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1380,6 +1380,14 @@ static int vxlan_rcv(struct sock *sk, struct sk_buff *skb)
goto drop;
}

+ rcu_read_lock();
+
+ if (unlikely(!(vxlan->dev->flags & IFF_UP))) {
+ rcu_read_unlock();
+ atomic_long_inc(&vxlan->dev->rx_dropped);
+ goto drop;
+ }
+
stats = this_cpu_ptr(vxlan->dev->tstats);
u64_stats_update_begin(&stats->syncp);
stats->rx_packets++;
@@ -1387,6 +1395,9 @@ static int vxlan_rcv(struct sock *sk, struct sk_buff *skb)
u64_stats_update_end(&stats->syncp);

gro_cells_receive(&vxlan->gro_cells, skb);
+
+ rcu_read_unlock();
+
return 0;

drop:
@@ -2362,6 +2373,8 @@ static void vxlan_uninit(struct net_device *dev)
{
struct vxlan_dev *vxlan = netdev_priv(dev);

+ gro_cells_destroy(&vxlan->gro_cells);
+
vxlan_fdb_delete_default(vxlan);

free_percpu(dev->tstats);
@@ -3112,7 +3125,6 @@ static void vxlan_dellink(struct net_device *dev, struct list_head *head)
{
struct vxlan_dev *vxlan = netdev_priv(dev);

- gro_cells_destroy(&vxlan->gro_cells);
list_del(&vxlan->next);
unregister_netdevice_queue(dev, head);
}
diff --git a/drivers/vhost/vsock.c b/drivers/vhost/vsock.c
index 72e914de473e..3cefd602b5b1 100644
--- a/drivers/vhost/vsock.c
+++ b/drivers/vhost/vsock.c
@@ -640,7 +640,7 @@ static int vhost_vsock_set_cid(struct vhost_vsock *vsock, u64 guest_cid)
hash_del_rcu(&vsock->hash);

vsock->guest_cid = guest_cid;
- hash_add_rcu(vhost_vsock_hash, &vsock->hash, guest_cid);
+ hash_add_rcu(vhost_vsock_hash, &vsock->hash, vsock->guest_cid);
spin_unlock_bh(&vhost_vsock_lock);

return 0;
diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
index 12c2882bf647..eef069616a2f 100644
--- a/include/acpi/acconfig.h
+++ b/include/acpi/acconfig.h
@@ -122,7 +122,7 @@

/* Maximum object reference count (detects object deletion issues) */

-#define ACPI_MAX_REFERENCE_COUNT 0x1000
+#define ACPI_MAX_REFERENCE_COUNT 0x4000

/* Default page size for use in mapping memory for operation regions */

diff --git a/include/linux/of.h b/include/linux/of.h
index a19cc85b9373..aac3f09c5d90 100644
--- a/include/linux/of.h
+++ b/include/linux/of.h
@@ -148,16 +148,20 @@ extern raw_spinlock_t devtree_lock;
#ifdef CONFIG_OF
void of_core_init(void);

-static inline bool is_of_node(struct fwnode_handle *fwnode)
+static inline bool is_of_node(const struct fwnode_handle *fwnode)
{
return !IS_ERR_OR_NULL(fwnode) && fwnode->type == FWNODE_OF;
}

-static inline struct device_node *to_of_node(struct fwnode_handle *fwnode)
-{
- return is_of_node(fwnode) ?
- container_of(fwnode, struct device_node, fwnode) : NULL;
-}
+#define to_of_node(__fwnode) \
+ ({ \
+ typeof(__fwnode) __to_of_node_fwnode = (__fwnode); \
+ \
+ is_of_node(__to_of_node_fwnode) ? \
+ container_of(__to_of_node_fwnode, \
+ struct device_node, fwnode) : \
+ NULL; \
+ })

static inline bool of_have_populated_dt(void)
{
@@ -529,12 +533,12 @@ static inline void of_core_init(void)
{
}

-static inline bool is_of_node(struct fwnode_handle *fwnode)
+static inline bool is_of_node(const struct fwnode_handle *fwnode)
{
return false;
}

-static inline struct device_node *to_of_node(struct fwnode_handle *fwnode)
+static inline struct device_node *to_of_node(const struct fwnode_handle *fwnode)
{
return NULL;
}
diff --git a/include/net/gro_cells.h b/include/net/gro_cells.h
index 95f33eeee984..6db0e8534127 100644
--- a/include/net/gro_cells.h
+++ b/include/net/gro_cells.h
@@ -18,22 +18,36 @@ static inline int gro_cells_receive(struct gro_cells *gcells, struct sk_buff *sk
{
struct gro_cell *cell;
struct net_device *dev = skb->dev;
+ int res;

- if (!gcells->cells || skb_cloned(skb) || !(dev->features & NETIF_F_GRO))
- return netif_rx(skb);
+ rcu_read_lock();
+ if (unlikely(!(dev->flags & IFF_UP)))
+ goto drop;
+
+ if (!gcells->cells || skb_cloned(skb) || !(dev->features & NETIF_F_GRO)) {
+ res = netif_rx(skb);
+ goto unlock;
+ }

cell = this_cpu_ptr(gcells->cells);

if (skb_queue_len(&cell->napi_skbs) > netdev_max_backlog) {
+drop:
atomic_long_inc(&dev->rx_dropped);
kfree_skb(skb);
- return NET_RX_DROP;
+ res = NET_RX_DROP;
+ goto unlock;
}

__skb_queue_tail(&cell->napi_skbs, skb);
if (skb_queue_len(&cell->napi_skbs) == 1)
napi_schedule(&cell->napi);
- return NET_RX_SUCCESS;
+
+ res = NET_RX_SUCCESS;
+
+unlock:
+ rcu_read_unlock();
+ return res;
}

/* called under BH context */
diff --git a/net/hsr/hsr_device.c b/net/hsr/hsr_device.c
index 16737cd8dae8..52694cb759b0 100644
--- a/net/hsr/hsr_device.c
+++ b/net/hsr/hsr_device.c
@@ -94,9 +94,8 @@ static void hsr_check_announce(struct net_device *hsr_dev,
&& (old_operstate != IF_OPER_UP)) {
/* Went up */
hsr->announce_count = 0;
- hsr->announce_timer.expires = jiffies +
- msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL);
- add_timer(&hsr->announce_timer);
+ mod_timer(&hsr->announce_timer,
+ jiffies + msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL));
}

if ((hsr_dev->operstate != IF_OPER_UP) && (old_operstate == IF_OPER_UP))
@@ -331,6 +330,7 @@ static void hsr_announce(unsigned long data)
{
struct hsr_priv *hsr;
struct hsr_port *master;
+ unsigned long interval;

hsr = (struct hsr_priv *) data;

@@ -342,18 +342,16 @@ static void hsr_announce(unsigned long data)
hsr->protVersion);
hsr->announce_count++;

- hsr->announce_timer.expires = jiffies +
- msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL);
+ interval = msecs_to_jiffies(HSR_ANNOUNCE_INTERVAL);
} else {
send_hsr_supervision_frame(master, HSR_TLV_LIFE_CHECK,
hsr->protVersion);

- hsr->announce_timer.expires = jiffies +
- msecs_to_jiffies(HSR_LIFE_CHECK_INTERVAL);
+ interval = msecs_to_jiffies(HSR_LIFE_CHECK_INTERVAL);
}

if (is_admin_up(master->dev))
- add_timer(&hsr->announce_timer);
+ mod_timer(&hsr->announce_timer, jiffies + interval);

rcu_read_unlock();
}
@@ -485,7 +483,7 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],

res = hsr_add_port(hsr, hsr_dev, HSR_PT_MASTER);
if (res)
- return res;
+ goto err_add_port;

res = register_netdevice(hsr_dev);
if (res)
@@ -505,6 +503,8 @@ int hsr_dev_finalize(struct net_device *hsr_dev, struct net_device *slave[2],
fail:
hsr_for_each_port(hsr, port)
hsr_del_port(port);
+err_add_port:
+ hsr_del_node(&hsr->self_node_db);

return res;
}
diff --git a/net/hsr/hsr_framereg.c b/net/hsr/hsr_framereg.c
index 284a9b820df8..6705420b3111 100644
--- a/net/hsr/hsr_framereg.c
+++ b/net/hsr/hsr_framereg.c
@@ -124,6 +124,18 @@ int hsr_create_self_node(struct list_head *self_node_db,
return 0;
}

+void hsr_del_node(struct list_head *self_node_db)
+{
+ struct hsr_node *node;
+
+ rcu_read_lock();
+ node = list_first_or_null_rcu(self_node_db, struct hsr_node, mac_list);
+ rcu_read_unlock();
+ if (node) {
+ list_del_rcu(&node->mac_list);
+ kfree(node);
+ }
+}

/* Allocate an hsr_node and add it to node_db. 'addr' is the node's AddressA;
* seq_out is used to initialize filtering of outgoing duplicate frames
diff --git a/net/hsr/hsr_framereg.h b/net/hsr/hsr_framereg.h
index 4e04f0e868e9..43958a338095 100644
--- a/net/hsr/hsr_framereg.h
+++ b/net/hsr/hsr_framereg.h
@@ -16,6 +16,7 @@

struct hsr_node;

+void hsr_del_node(struct list_head *self_node_db);
struct hsr_node *hsr_add_node(struct list_head *node_db, unsigned char addr[],
u16 seq_out);
struct hsr_node *hsr_get_node(struct hsr_port *port, struct sk_buff *skb,
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 528a6777cda0..1bcbb7399fe6 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -790,7 +790,6 @@ static void inet_child_forget(struct sock *sk, struct request_sock *req,
tcp_sk(child)->fastopen_rsk = NULL;
}
inet_csk_destroy_sock(child);
- reqsk_put(req);
}

struct sock *inet_csk_reqsk_queue_add(struct sock *sk,
@@ -861,6 +860,7 @@ void inet_csk_listen_stop(struct sock *sk)
sock_hold(child);

inet_child_forget(sk, req, child);
+ reqsk_put(req);
bh_unlock_sock(child);
local_bh_enable();
sock_put(child);
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index d606de65e2d0..c42fb2330b45 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1613,6 +1613,10 @@ static void ip_del_fnhe(struct fib_nh *nh, __be32 daddr)
if (fnhe->fnhe_daddr == daddr) {
rcu_assign_pointer(*fnhe_p, rcu_dereference_protected(
fnhe->fnhe_next, lockdep_is_held(&fnhe_lock)));
+ /* set fnhe_daddr to 0 to ensure it won't bind with
+ * new dsts in rt_bind_exception().
+ */
+ fnhe->fnhe_daddr = 0;
fnhe_flush_routes(fnhe);
kfree_rcu(fnhe, rcu);
break;
diff --git a/net/ipv4/syncookies.c b/net/ipv4/syncookies.c
index 0597ad73a1fa..b596c413d297 100644
--- a/net/ipv4/syncookies.c
+++ b/net/ipv4/syncookies.c
@@ -225,7 +225,12 @@ struct sock *tcp_get_cookie_sock(struct sock *sk, struct sk_buff *skb,
if (child) {
atomic_set(&req->rsk_refcnt, 1);
sock_rps_save_rxhash(child, skb);
- inet_csk_reqsk_queue_add(sk, req, child);
+ if (!inet_csk_reqsk_queue_add(sk, req, child)) {
+ bh_unlock_sock(child);
+ sock_put(child);
+ child = NULL;
+ reqsk_put(req);
+ }
} else {
reqsk_free(req);
}
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c
index dbb153c6b21a..48fe63c4fe24 100644
--- a/net/ipv4/tcp_input.c
+++ b/net/ipv4/tcp_input.c
@@ -6479,7 +6479,13 @@ int tcp_conn_request(struct request_sock_ops *rsk_ops,
af_ops->send_synack(fastopen_sk, dst, &fl, req,
&foc, TCP_SYNACK_FASTOPEN);
/* Add the child socket directly into the accept queue */
- inet_csk_reqsk_queue_add(sk, req, fastopen_sk);
+ if (!inet_csk_reqsk_queue_add(sk, req, fastopen_sk)) {
+ reqsk_fastopen_remove(fastopen_sk, req, false);
+ bh_unlock_sock(fastopen_sk);
+ sock_put(fastopen_sk);
+ reqsk_put(req);
+ goto drop;
+ }
sk->sk_data_ready(sk);
bh_unlock_sock(fastopen_sk);
sock_put(fastopen_sk);
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index b0a72677b7e5..27c93baed708 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -3211,7 +3211,7 @@ static int rt6_fill_node(struct net *net,
table = rt->rt6i_table->tb6_id;
else
table = RT6_TABLE_UNSPEC;
- rtm->rtm_table = table;
+ rtm->rtm_table = table < 256 ? table : RT_TABLE_COMPAT;
if (nla_put_u32(skb, RTA_TABLE, table))
goto nla_put_failure;
if (rt->rt6i_flags & RTF_REJECT) {
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 75de3dd8b862..c9c6a5e829ab 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -767,8 +767,9 @@ static bool check_6rd(struct ip_tunnel *tunnel, const struct in6_addr *v6dst,
pbw0 = tunnel->ip6rd.prefixlen >> 5;
pbi0 = tunnel->ip6rd.prefixlen & 0x1f;

- d = (ntohl(v6dst->s6_addr32[pbw0]) << pbi0) >>
- tunnel->ip6rd.relay_prefixlen;
+ d = tunnel->ip6rd.relay_prefixlen < 32 ?
+ (ntohl(v6dst->s6_addr32[pbw0]) << pbi0) >>
+ tunnel->ip6rd.relay_prefixlen : 0;

pbi1 = pbi0 - tunnel->ip6rd.relay_prefixlen;
if (pbi1 > 0)
diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c
index 5e6d09863480..8d412b9b0214 100644
--- a/net/l2tp/l2tp_ip6.c
+++ b/net/l2tp/l2tp_ip6.c
@@ -680,9 +680,6 @@ static int l2tp_ip6_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
if (flags & MSG_OOB)
goto out;

- if (addr_len)
- *addr_len = sizeof(*lsa);
-
if (flags & MSG_ERRQUEUE)
return ipv6_recv_error(sk, msg, len, addr_len);

@@ -712,6 +709,7 @@ static int l2tp_ip6_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
lsa->l2tp_conn_id = 0;
if (ipv6_addr_type(&lsa->l2tp_addr) & IPV6_ADDR_LINKLOCAL)
lsa->l2tp_scope_id = inet6_iif(skb);
+ *addr_len = sizeof(*lsa);
}

if (np->rxopt.all)
diff --git a/net/rxrpc/conn_client.c b/net/rxrpc/conn_client.c
index 60ef9605167e..0fce919bf47d 100644
--- a/net/rxrpc/conn_client.c
+++ b/net/rxrpc/conn_client.c
@@ -355,7 +355,7 @@ static int rxrpc_get_client_conn(struct rxrpc_call *call,
* normally have to take channel_lock but we do this before anyone else
* can see the connection.
*/
- list_add_tail(&call->chan_wait_link, &candidate->waiting_calls);
+ list_add(&call->chan_wait_link, &candidate->waiting_calls);

if (cp->exclusive) {
call->conn = candidate;
@@ -430,7 +430,7 @@ static int rxrpc_get_client_conn(struct rxrpc_call *call,
spin_lock(&conn->channel_lock);
call->conn = conn;
call->security_ix = conn->security_ix;
- list_add(&call->chan_wait_link, &conn->waiting_calls);
+ list_add_tail(&call->chan_wait_link, &conn->waiting_calls);
spin_unlock(&conn->channel_lock);
_leave(" = 0 [extant %d]", conn->debug_id);
return 0;
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 915abe98174e..cecf51a5aec4 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -891,7 +891,7 @@ static int unix_autobind(struct socket *sock)
addr->hash ^= sk->sk_type;

__unix_remove_socket(sk);
- u->addr = addr;
+ smp_store_release(&u->addr, addr);
__unix_insert_socket(&unix_socket_table[addr->hash], sk);
spin_unlock(&unix_table_lock);
err = 0;
@@ -1061,7 +1061,7 @@ static int unix_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)

err = 0;
__unix_remove_socket(sk);
- u->addr = addr;
+ smp_store_release(&u->addr, addr);
__unix_insert_socket(list, sk);

out_unlock:
@@ -1332,15 +1332,29 @@ static int unix_stream_connect(struct socket *sock, struct sockaddr *uaddr,
RCU_INIT_POINTER(newsk->sk_wq, &newu->peer_wq);
otheru = unix_sk(other);

- /* copy address information from listening to new sock*/
- if (otheru->addr) {
- atomic_inc(&otheru->addr->refcnt);
- newu->addr = otheru->addr;
- }
+ /* copy address information from listening to new sock
+ *
+ * The contents of *(otheru->addr) and otheru->path
+ * are seen fully set up here, since we have found
+ * otheru in hash under unix_table_lock. Insertion
+ * into the hash chain we'd found it in had been done
+ * in an earlier critical area protected by unix_table_lock,
+ * the same one where we'd set *(otheru->addr) contents,
+ * as well as otheru->path and otheru->addr itself.
+ *
+ * Using smp_store_release() here to set newu->addr
+ * is enough to make those stores, as well as stores
+ * to newu->path visible to anyone who gets newu->addr
+ * by smp_load_acquire(). IOW, the same warranties
+ * as for unix_sock instances bound in unix_bind() or
+ * in unix_autobind().
+ */
if (otheru->path.dentry) {
path_get(&otheru->path);
newu->path = otheru->path;
}
+ atomic_inc(&otheru->addr->refcnt);
+ smp_store_release(&newu->addr, otheru->addr);

/* Set credentials */
copy_peercred(sk, other);
@@ -1453,7 +1467,7 @@ static int unix_accept(struct socket *sock, struct socket *newsock, int flags)
static int unix_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_len, int peer)
{
struct sock *sk = sock->sk;
- struct unix_sock *u;
+ struct unix_address *addr;
DECLARE_SOCKADDR(struct sockaddr_un *, sunaddr, uaddr);
int err = 0;

@@ -1468,19 +1482,15 @@ static int unix_getname(struct socket *sock, struct sockaddr *uaddr, int *uaddr_
sock_hold(sk);
}

- u = unix_sk(sk);
- unix_state_lock(sk);
- if (!u->addr) {
+ addr = smp_load_acquire(&unix_sk(sk)->addr);
+ if (!addr) {
sunaddr->sun_family = AF_UNIX;
sunaddr->sun_path[0] = 0;
*uaddr_len = sizeof(short);
} else {
- struct unix_address *addr = u->addr;
-
*uaddr_len = addr->len;
memcpy(sunaddr, addr->name, *uaddr_len);
}
- unix_state_unlock(sk);
sock_put(sk);
out:
return err;
@@ -2094,11 +2104,11 @@ static int unix_seqpacket_recvmsg(struct socket *sock, struct msghdr *msg,

static void unix_copy_addr(struct msghdr *msg, struct sock *sk)
{
- struct unix_sock *u = unix_sk(sk);
+ struct unix_address *addr = smp_load_acquire(&unix_sk(sk)->addr);

- if (u->addr) {
- msg->msg_namelen = u->addr->len;
- memcpy(msg->msg_name, u->addr->name, u->addr->len);
+ if (addr) {
+ msg->msg_namelen = addr->len;
+ memcpy(msg->msg_name, addr->name, addr->len);
}
}

@@ -2814,7 +2824,7 @@ static int unix_seq_show(struct seq_file *seq, void *v)
(s->sk_state == TCP_ESTABLISHED ? SS_CONNECTING : SS_DISCONNECTING),
sock_i_ino(s));

- if (u->addr) {
+ if (u->addr) { // under unix_table_lock here
int i, len;
seq_putc(seq, ' ');

diff --git a/net/unix/diag.c b/net/unix/diag.c
index 384c84e83462..3183d9b8ab33 100644
--- a/net/unix/diag.c
+++ b/net/unix/diag.c
@@ -10,7 +10,8 @@

static int sk_diag_dump_name(struct sock *sk, struct sk_buff *nlskb)
{
- struct unix_address *addr = unix_sk(sk)->addr;
+ /* might or might not have unix_table_lock */
+ struct unix_address *addr = smp_load_acquire(&unix_sk(sk)->addr);

if (!addr)
return 0;
diff --git a/net/x25/af_x25.c b/net/x25/af_x25.c
index 0a7e5d992bba..770ababb8f92 100644
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -678,8 +678,7 @@ static int x25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
struct sockaddr_x25 *addr = (struct sockaddr_x25 *)uaddr;
int len, i, rc = 0;

- if (!sock_flag(sk, SOCK_ZAPPED) ||
- addr_len != sizeof(struct sockaddr_x25) ||
+ if (addr_len != sizeof(struct sockaddr_x25) ||
addr->sx25_family != AF_X25) {
rc = -EINVAL;
goto out;
@@ -694,9 +693,13 @@ static int x25_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
}

lock_sock(sk);
- x25_sk(sk)->source_addr = addr->sx25_addr;
- x25_insert_socket(sk);
- sock_reset_flag(sk, SOCK_ZAPPED);
+ if (sock_flag(sk, SOCK_ZAPPED)) {
+ x25_sk(sk)->source_addr = addr->sx25_addr;
+ x25_insert_socket(sk);
+ sock_reset_flag(sk, SOCK_ZAPPED);
+ } else {
+ rc = -EINVAL;
+ }
release_sock(sk);
SOCK_DEBUG(sk, "x25_bind: socket is bound\n");
out:
@@ -812,8 +815,13 @@ static int x25_connect(struct socket *sock, struct sockaddr *uaddr,
sock->state = SS_CONNECTED;
rc = 0;
out_put_neigh:
- if (rc)
+ if (rc) {
+ read_lock_bh(&x25_list_lock);
x25_neigh_put(x25->neighbour);
+ x25->neighbour = NULL;
+ read_unlock_bh(&x25_list_lock);
+ x25->state = X25_STATE_0;
+ }
out_put_route:
x25_route_put(rt);
out:
diff --git a/security/keys/proc.c b/security/keys/proc.c
index ec493ddadd11..f2c7e090a66d 100644
--- a/security/keys/proc.c
+++ b/security/keys/proc.c
@@ -187,7 +187,7 @@ static int proc_keys_show(struct seq_file *m, void *v)

struct keyring_search_context ctx = {
.index_key = key->index_key,
- .cred = current_cred(),
+ .cred = m->file->f_cred,
.match_data.cmp = lookup_user_key_possessed,
.match_data.raw_data = key,
.match_data.lookup_type = KEYRING_SEARCH_LOOKUP_DIRECT,
@@ -207,11 +207,7 @@ static int proc_keys_show(struct seq_file *m, void *v)
}
}

- /* check whether the current task is allowed to view the key (assuming
- * non-possession)
- * - the caller holds a spinlock, and thus the RCU read lock, making our
- * access to __current_cred() safe
- */
+ /* check whether the current task is allowed to view the key */
rc = key_task_permission(key_ref, ctx.cred, KEY_NEED_VIEW);
if (rc < 0)
return 0;
diff --git a/security/lsm_audit.c b/security/lsm_audit.c
index 37f04dadc8d6..44a20c218409 100644
--- a/security/lsm_audit.c
+++ b/security/lsm_audit.c
@@ -321,6 +321,7 @@ static void dump_common_audit_data(struct audit_buffer *ab,
if (a->u.net->sk) {
struct sock *sk = a->u.net->sk;
struct unix_sock *u;
+ struct unix_address *addr;
int len = 0;
char *p = NULL;

@@ -351,14 +352,15 @@ static void dump_common_audit_data(struct audit_buffer *ab,
#endif
case AF_UNIX:
u = unix_sk(sk);
+ addr = smp_load_acquire(&u->addr);
+ if (!addr)
+ break;
if (u->path.dentry) {
audit_log_d_path(ab, " path=", &u->path);
break;
}
- if (!u->addr)
- break;
- len = u->addr->len-sizeof(short);
- p = &u->addr->name->sun_path[0];
+ len = addr->len-sizeof(short);
+ p = &addr->name->sun_path[0];
audit_log_format(ab, " path=");
if (*p)
audit_log_untrustedstring(ab, p);
diff --git a/sound/firewire/bebob/bebob.c b/sound/firewire/bebob/bebob.c
index 3b4eaffe4a7f..a205b93fd9ac 100644
--- a/sound/firewire/bebob/bebob.c
+++ b/sound/firewire/bebob/bebob.c
@@ -474,7 +474,19 @@ static const struct ieee1394_device_id bebob_id_table[] = {
/* Focusrite, SaffirePro 26 I/O */
SND_BEBOB_DEV_ENTRY(VEN_FOCUSRITE, 0x00000003, &saffirepro_26_spec),
/* Focusrite, SaffirePro 10 I/O */
- SND_BEBOB_DEV_ENTRY(VEN_FOCUSRITE, 0x00000006, &saffirepro_10_spec),
+ {
+ // The combination of vendor_id and model_id is the same as the
+ // same as the one of Liquid Saffire 56.
+ .match_flags = IEEE1394_MATCH_VENDOR_ID |
+ IEEE1394_MATCH_MODEL_ID |
+ IEEE1394_MATCH_SPECIFIER_ID |
+ IEEE1394_MATCH_VERSION,
+ .vendor_id = VEN_FOCUSRITE,
+ .model_id = 0x000006,
+ .specifier_id = 0x00a02d,
+ .version = 0x010001,
+ .driver_data = (kernel_ulong_t)&saffirepro_10_spec,
+ },
/* Focusrite, Saffire(no label and LE) */
SND_BEBOB_DEV_ENTRY(VEN_FOCUSRITE, MODEL_FOCUSRITE_SAFFIRE_BOTH,
&saffire_spec),