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SubjectRe: Linux 4.17.1
diff --git a/Documentation/networking/netdev-FAQ.txt b/Documentation/networking/netdev-FAQ.txt
index 2a3278d5cf35..fa951b820b25 100644
--- a/Documentation/networking/netdev-FAQ.txt
+++ b/Documentation/networking/netdev-FAQ.txt
@@ -179,6 +179,15 @@ A: No. See above answer. In short, if you think it really belongs in
dash marker line as described in Documentation/process/submitting-patches.rst to
temporarily embed that information into the patch that you send.

+Q: Are all networking bug fixes backported to all stable releases?
+
+A: Due to capacity, Dave could only take care of the backports for the last
+ 2 stable releases. For earlier stable releases, each stable branch maintainer
+ is supposed to take care of them. If you find any patch is missing from an
+ earlier stable branch, please notify stable@vger.kernel.org with either a
+ commit ID or a formal patch backported, and CC Dave and other relevant
+ networking developers.
+
Q: Someone said that the comment style and coding convention is different
for the networking content. Is this true?

diff --git a/Makefile b/Makefile
index 554dcaddbce4..e551c9af6a06 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 17
-SUBLEVEL = 0
+SUBLEVEL = 1
EXTRAVERSION =
NAME = Merciless Moray

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 3da5fca77cbd..bbc6cc609ec3 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -684,7 +684,8 @@ static int b53_switch_reset(struct b53_device *dev)
* still use this driver as a library and need to perform the reset
* earlier.
*/
- if (dev->chip_id == BCM58XX_DEVICE_ID) {
+ if (dev->chip_id == BCM58XX_DEVICE_ID ||
+ dev->chip_id == BCM583XX_DEVICE_ID) {
b53_read8(dev, B53_CTRL_PAGE, B53_SOFTRESET, &reg);
reg |= SW_RST | EN_SW_RST | EN_CH_RST;
b53_write8(dev, B53_CTRL_PAGE, B53_SOFTRESET, reg);
@@ -1879,6 +1880,18 @@ static const struct b53_chip_data b53_switch_chips[] = {
.jumbo_pm_reg = B53_JUMBO_PORT_MASK,
.jumbo_size_reg = B53_JUMBO_MAX_SIZE,
},
+ {
+ .chip_id = BCM583XX_DEVICE_ID,
+ .dev_name = "BCM583xx/11360",
+ .vlans = 4096,
+ .enabled_ports = 0x103,
+ .arl_entries = 4,
+ .cpu_port = B53_CPU_PORT,
+ .vta_regs = B53_VTA_REGS,
+ .duplex_reg = B53_DUPLEX_STAT_GE,
+ .jumbo_pm_reg = B53_JUMBO_PORT_MASK,
+ .jumbo_size_reg = B53_JUMBO_MAX_SIZE,
+ },
{
.chip_id = BCM7445_DEVICE_ID,
.dev_name = "BCM7445",
diff --git a/drivers/net/dsa/b53/b53_priv.h b/drivers/net/dsa/b53/b53_priv.h
index 3b57f47d0e79..b232aaae20aa 100644
--- a/drivers/net/dsa/b53/b53_priv.h
+++ b/drivers/net/dsa/b53/b53_priv.h
@@ -62,6 +62,7 @@ enum {
BCM53018_DEVICE_ID = 0x53018,
BCM53019_DEVICE_ID = 0x53019,
BCM58XX_DEVICE_ID = 0x5800,
+ BCM583XX_DEVICE_ID = 0x58300,
BCM7445_DEVICE_ID = 0x7445,
BCM7278_DEVICE_ID = 0x7278,
};
@@ -181,6 +182,7 @@ static inline int is5301x(struct b53_device *dev)
static inline int is58xx(struct b53_device *dev)
{
return dev->chip_id == BCM58XX_DEVICE_ID ||
+ dev->chip_id == BCM583XX_DEVICE_ID ||
dev->chip_id == BCM7445_DEVICE_ID ||
dev->chip_id == BCM7278_DEVICE_ID;
}
diff --git a/drivers/net/dsa/b53/b53_srab.c b/drivers/net/dsa/b53/b53_srab.c
index c37ffd1b6833..8247481eaa06 100644
--- a/drivers/net/dsa/b53/b53_srab.c
+++ b/drivers/net/dsa/b53/b53_srab.c
@@ -364,7 +364,7 @@ static const struct of_device_id b53_srab_of_match[] = {
{ .compatible = "brcm,bcm53018-srab" },
{ .compatible = "brcm,bcm53019-srab" },
{ .compatible = "brcm,bcm5301x-srab" },
- { .compatible = "brcm,bcm11360-srab", .data = (void *)BCM58XX_DEVICE_ID },
+ { .compatible = "brcm,bcm11360-srab", .data = (void *)BCM583XX_DEVICE_ID },
{ .compatible = "brcm,bcm58522-srab", .data = (void *)BCM58XX_DEVICE_ID },
{ .compatible = "brcm,bcm58525-srab", .data = (void *)BCM58XX_DEVICE_ID },
{ .compatible = "brcm,bcm58535-srab", .data = (void *)BCM58XX_DEVICE_ID },
@@ -372,7 +372,7 @@ static const struct of_device_id b53_srab_of_match[] = {
{ .compatible = "brcm,bcm58623-srab", .data = (void *)BCM58XX_DEVICE_ID },
{ .compatible = "brcm,bcm58625-srab", .data = (void *)BCM58XX_DEVICE_ID },
{ .compatible = "brcm,bcm88312-srab", .data = (void *)BCM58XX_DEVICE_ID },
- { .compatible = "brcm,cygnus-srab", .data = (void *)BCM58XX_DEVICE_ID },
+ { .compatible = "brcm,cygnus-srab", .data = (void *)BCM583XX_DEVICE_ID },
{ .compatible = "brcm,nsp-srab", .data = (void *)BCM58XX_DEVICE_ID },
{ /* sentinel */ },
};
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
index 7dd83d0ef0a0..22243c480a05 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
@@ -588,7 +588,7 @@ static void bnx2x_ets_e3b0_nig_disabled(const struct link_params *params,
* slots for the highest priority.
*/
REG_WR(bp, (port) ? NIG_REG_P1_TX_ARB_NUM_STRICT_ARB_SLOTS :
- NIG_REG_P1_TX_ARB_NUM_STRICT_ARB_SLOTS, 0x100);
+ NIG_REG_P0_TX_ARB_NUM_STRICT_ARB_SLOTS, 0x100);
/* Mapping between the CREDIT_WEIGHT registers and actual client
* numbers
*/
diff --git a/drivers/net/team/team.c b/drivers/net/team/team.c
index ddb6bf85a59c..e141563a4682 100644
--- a/drivers/net/team/team.c
+++ b/drivers/net/team/team.c
@@ -1004,7 +1004,8 @@ static void team_port_disable(struct team *team,
static void __team_compute_features(struct team *team)
{
struct team_port *port;
- u32 vlan_features = TEAM_VLAN_FEATURES & NETIF_F_ALL_FOR_ALL;
+ netdev_features_t vlan_features = TEAM_VLAN_FEATURES &
+ NETIF_F_ALL_FOR_ALL;
netdev_features_t enc_features = TEAM_ENC_FEATURES;
unsigned short max_hard_header_len = ETH_HLEN;
unsigned int dst_release_flag = IFF_XMIT_DST_RELEASE |
diff --git a/drivers/pci/host/pci-hyperv.c b/drivers/pci/host/pci-hyperv.c
index 50cdefe3f6d3..c75199538c05 100644
--- a/drivers/pci/host/pci-hyperv.c
+++ b/drivers/pci/host/pci-hyperv.c
@@ -556,6 +556,26 @@ static void put_pcichild(struct hv_pci_dev *hv_pcidev,
static void get_hvpcibus(struct hv_pcibus_device *hv_pcibus);
static void put_hvpcibus(struct hv_pcibus_device *hv_pcibus);

+/*
+ * There is no good way to get notified from vmbus_onoffer_rescind(),
+ * so let's use polling here, since this is not a hot path.
+ */
+static int wait_for_response(struct hv_device *hdev,
+ struct completion *comp)
+{
+ while (true) {
+ if (hdev->channel->rescind) {
+ dev_warn_once(&hdev->device, "The device is gone.\n");
+ return -ENODEV;
+ }
+
+ if (wait_for_completion_timeout(comp, HZ / 10))
+ break;
+ }
+
+ return 0;
+}
+
/**
* devfn_to_wslot() - Convert from Linux PCI slot to Windows
* @devfn: The Linux representation of PCI slot
@@ -1568,7 +1588,8 @@ static struct hv_pci_dev *new_pcichild_device(struct hv_pcibus_device *hbus,
if (ret)
goto error;

- wait_for_completion(&comp_pkt.host_event);
+ if (wait_for_response(hbus->hdev, &comp_pkt.host_event))
+ goto error;

hpdev->desc = *desc;
refcount_set(&hpdev->refs, 1);
@@ -2069,15 +2090,16 @@ static int hv_pci_protocol_negotiation(struct hv_device *hdev)
sizeof(struct pci_version_request),
(unsigned long)pkt, VM_PKT_DATA_INBAND,
VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+ if (!ret)
+ ret = wait_for_response(hdev, &comp_pkt.host_event);
+
if (ret) {
dev_err(&hdev->device,
- "PCI Pass-through VSP failed sending version reqquest: %#x",
+ "PCI Pass-through VSP failed to request version: %d",
ret);
goto exit;
}

- wait_for_completion(&comp_pkt.host_event);
-
if (comp_pkt.completion_status >= 0) {
pci_protocol_version = pci_protocol_versions[i];
dev_info(&hdev->device,
@@ -2286,11 +2308,12 @@ static int hv_pci_enter_d0(struct hv_device *hdev)
ret = vmbus_sendpacket(hdev->channel, d0_entry, sizeof(*d0_entry),
(unsigned long)pkt, VM_PKT_DATA_INBAND,
VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+ if (!ret)
+ ret = wait_for_response(hdev, &comp_pkt.host_event);
+
if (ret)
goto exit;

- wait_for_completion(&comp_pkt.host_event);
-
if (comp_pkt.completion_status < 0) {
dev_err(&hdev->device,
"PCI Pass-through VSP failed D0 Entry with status %x\n",
@@ -2330,11 +2353,10 @@ static int hv_pci_query_relations(struct hv_device *hdev)

ret = vmbus_sendpacket(hdev->channel, &message, sizeof(message),
0, VM_PKT_DATA_INBAND, 0);
- if (ret)
- return ret;
+ if (!ret)
+ ret = wait_for_response(hdev, &comp);

- wait_for_completion(&comp);
- return 0;
+ return ret;
}

/**
@@ -2404,11 +2426,11 @@ static int hv_send_resources_allocated(struct hv_device *hdev)
size_res, (unsigned long)pkt,
VM_PKT_DATA_INBAND,
VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED);
+ if (!ret)
+ ret = wait_for_response(hdev, &comp_pkt.host_event);
if (ret)
break;

- wait_for_completion(&comp_pkt.host_event);
-
if (comp_pkt.completion_status < 0) {
ret = -EPROTO;
dev_err(&hdev->device,
diff --git a/include/linux/mroute_base.h b/include/linux/mroute_base.h
index d617fe45543e..d633f737b3c6 100644
--- a/include/linux/mroute_base.h
+++ b/include/linux/mroute_base.h
@@ -307,16 +307,6 @@ static inline void vif_device_init(struct vif_device *v,
{
}

-static inline void *
-mr_table_alloc(struct net *net, u32 id,
- struct mr_table_ops *ops,
- void (*expire_func)(struct timer_list *t),
- void (*table_set)(struct mr_table *mrt,
- struct net *net))
-{
- return NULL;
-}
-
static inline void *mr_mfc_find_parent(struct mr_table *mrt,
void *hasharg, int parent)
{
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 836f31af1369..a406f2e8680a 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -906,6 +906,11 @@ static inline __be32 ip6_make_flowinfo(unsigned int tclass, __be32 flowlabel)
return htonl(tclass << IPV6_TCLASS_SHIFT) | flowlabel;
}

+static inline __be32 flowi6_get_flowlabel(const struct flowi6 *fl6)
+{
+ return fl6->flowlabel & IPV6_FLOWLABEL_MASK;
+}
+
/*
* Prototypes exported by ipv6
*/
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index d29f09bc5ff9..0234f8d1f0ac 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -1334,7 +1334,7 @@ __u32 __get_hash_from_flowi6(const struct flowi6 *fl6, struct flow_keys *keys)
keys->ports.src = fl6->fl6_sport;
keys->ports.dst = fl6->fl6_dport;
keys->keyid.keyid = fl6->fl6_gre_key;
- keys->tags.flow_label = (__force u32)fl6->flowlabel;
+ keys->tags.flow_label = (__force u32)flowi6_get_flowlabel(fl6);
keys->basic.ip_proto = fl6->flowi6_proto;

return flow_hash_from_keys(keys);
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 45936922d7e2..19f6ab5de6e1 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -2256,6 +2256,10 @@ static int do_setlink(const struct sk_buff *skb,
const struct net_device_ops *ops = dev->netdev_ops;
int err;

+ err = validate_linkmsg(dev, tb);
+ if (err < 0)
+ return err;
+
if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD] || tb[IFLA_IF_NETNSID]) {
struct net *net = rtnl_link_get_net_capable(skb, dev_net(dev),
tb, CAP_NET_ADMIN);
@@ -2619,10 +2623,6 @@ static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh,
goto errout;
}

- err = validate_linkmsg(dev, tb);
- if (err < 0)
- goto errout;
-
err = do_setlink(skb, dev, ifm, extack, tb, ifname, 0);
errout:
return err;
diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index c27122f01b87..cfae17335705 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -717,6 +717,8 @@ bool fib_metrics_match(struct fib_config *cfg, struct fib_info *fi)
nla_strlcpy(tmp, nla, sizeof(tmp));
val = tcp_ca_get_key_by_name(fi->fib_net, tmp, &ecn_ca);
} else {
+ if (nla_len(nla) != sizeof(u32))
+ return false;
val = nla_get_u32(nla);
}

@@ -1043,6 +1045,8 @@ fib_convert_metrics(struct fib_info *fi, const struct fib_config *cfg)
if (val == TCP_CA_UNSPEC)
return -EINVAL;
} else {
+ if (nla_len(nla) != sizeof(u32))
+ return -EINVAL;
val = nla_get_u32(nla);
}
if (type == RTAX_ADVMSS && val > 65535 - 40)
diff --git a/net/ipv4/ipmr_base.c b/net/ipv4/ipmr_base.c
index 30221701614c..cafb0506c8c9 100644
--- a/net/ipv4/ipmr_base.c
+++ b/net/ipv4/ipmr_base.c
@@ -35,17 +35,19 @@ mr_table_alloc(struct net *net, u32 id,
struct net *net))
{
struct mr_table *mrt;
+ int err;

mrt = kzalloc(sizeof(*mrt), GFP_KERNEL);
if (!mrt)
- return NULL;
+ return ERR_PTR(-ENOMEM);
mrt->id = id;
write_pnet(&mrt->net, net);

mrt->ops = *ops;
- if (rhltable_init(&mrt->mfc_hash, mrt->ops.rht_params)) {
+ err = rhltable_init(&mrt->mfc_hash, mrt->ops.rht_params);
+ if (err) {
kfree(mrt);
- return NULL;
+ return ERR_PTR(err);
}
INIT_LIST_HEAD(&mrt->mfc_cache_list);
INIT_LIST_HEAD(&mrt->mfc_unres_queue);
diff --git a/net/ipv4/netfilter/nf_flow_table_ipv4.c b/net/ipv4/netfilter/nf_flow_table_ipv4.c
index 0cd46bffa469..fc3923932eda 100644
--- a/net/ipv4/netfilter/nf_flow_table_ipv4.c
+++ b/net/ipv4/netfilter/nf_flow_table_ipv4.c
@@ -213,7 +213,7 @@ nf_flow_offload_ip_hook(void *priv, struct sk_buff *skb,
enum flow_offload_tuple_dir dir;
struct flow_offload *flow;
struct net_device *outdev;
- const struct rtable *rt;
+ struct rtable *rt;
struct iphdr *iph;
__be32 nexthop;

@@ -234,7 +234,7 @@ nf_flow_offload_ip_hook(void *priv, struct sk_buff *skb,
dir = tuplehash->tuple.dir;
flow = container_of(tuplehash, struct flow_offload, tuplehash[dir]);

- rt = (const struct rtable *)flow->tuplehash[dir].tuple.dst_cache;
+ rt = (struct rtable *)flow->tuplehash[dir].tuple.dst_cache;
if (unlikely(nf_flow_exceeds_mtu(skb, rt)))
return NF_ACCEPT;

@@ -251,6 +251,7 @@ nf_flow_offload_ip_hook(void *priv, struct sk_buff *skb,

skb->dev = outdev;
nexthop = rt_nexthop(rt, flow->tuplehash[!dir].tuple.src_v4.s_addr);
+ skb_dst_set_noref(skb, &rt->dst);
neigh_xmit(NEIGH_ARP_TABLE, outdev, &nexthop, skb);

return NF_STOLEN;
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 7b6d1689087b..af49f6cb5d3e 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -507,7 +507,8 @@ int ip6_forward(struct sk_buff *skb)
send redirects to source routed frames.
We don't send redirects to frames decapsulated from IPsec.
*/
- if (skb->dev == dst->dev && opt->srcrt == 0 && !skb_sec_path(skb)) {
+ if (IP6CB(skb)->iif == dst->dev->ifindex &&
+ opt->srcrt == 0 && !skb_sec_path(skb)) {
struct in6_addr *target = NULL;
struct inet_peer *peer;
struct rt6_info *rt;
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index 298fd8b6ed17..37936671dcb3 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -227,8 +227,8 @@ static int __net_init ip6mr_rules_init(struct net *net)
INIT_LIST_HEAD(&net->ipv6.mr6_tables);

mrt = ip6mr_new_table(net, RT6_TABLE_DFLT);
- if (!mrt) {
- err = -ENOMEM;
+ if (IS_ERR(mrt)) {
+ err = PTR_ERR(mrt);
goto err1;
}

@@ -301,8 +301,13 @@ static int ip6mr_fib_lookup(struct net *net, struct flowi6 *flp6,

static int __net_init ip6mr_rules_init(struct net *net)
{
- net->ipv6.mrt6 = ip6mr_new_table(net, RT6_TABLE_DFLT);
- return net->ipv6.mrt6 ? 0 : -ENOMEM;
+ struct mr_table *mrt;
+
+ mrt = ip6mr_new_table(net, RT6_TABLE_DFLT);
+ if (IS_ERR(mrt))
+ return PTR_ERR(mrt);
+ net->ipv6.mrt6 = mrt;
+ return 0;
}

static void __net_exit ip6mr_rules_exit(struct net *net)
@@ -1757,9 +1762,11 @@ int ip6_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, uns

rtnl_lock();
ret = 0;
- if (!ip6mr_new_table(net, v))
- ret = -ENOMEM;
- raw6_sk(sk)->ip6mr_table = v;
+ mrt = ip6mr_new_table(net, v);
+ if (IS_ERR(mrt))
+ ret = PTR_ERR(mrt);
+ else
+ raw6_sk(sk)->ip6mr_table = v;
rtnl_unlock();
return ret;
}
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index 9de4dfb126ba..525051a886bc 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -1576,6 +1576,12 @@ void ndisc_send_redirect(struct sk_buff *skb, const struct in6_addr *target)
ops_data_buf[NDISC_OPS_REDIRECT_DATA_SPACE], *ops_data = NULL;
bool ret;

+ if (netif_is_l3_master(skb->dev)) {
+ dev = __dev_get_by_index(dev_net(skb->dev), IPCB(skb)->iif);
+ if (!dev)
+ return;
+ }
+
if (ipv6_get_lladdr(dev, &saddr_buf, IFA_F_TENTATIVE)) {
ND_PRINTK(2, warn, "Redirect: no link-local address on %s\n",
dev->name);
diff --git a/net/ipv6/netfilter/nf_flow_table_ipv6.c b/net/ipv6/netfilter/nf_flow_table_ipv6.c
index 207cb35569b1..2d6652146bba 100644
--- a/net/ipv6/netfilter/nf_flow_table_ipv6.c
+++ b/net/ipv6/netfilter/nf_flow_table_ipv6.c
@@ -243,6 +243,7 @@ nf_flow_offload_ipv6_hook(void *priv, struct sk_buff *skb,

skb->dev = outdev;
nexthop = rt6_nexthop(rt, &flow->tuplehash[!dir].tuple.src_v6);
+ skb_dst_set_noref(skb, &rt->dst);
neigh_xmit(NEIGH_ND_TABLE, outdev, nexthop, skb);

return NF_STOLEN;
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index f4d61736c41a..4530a82aaa2e 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1868,7 +1868,7 @@ static void ip6_multipath_l3_keys(const struct sk_buff *skb,
} else {
keys->addrs.v6addrs.src = key_iph->saddr;
keys->addrs.v6addrs.dst = key_iph->daddr;
- keys->tags.flow_label = ip6_flowinfo(key_iph);
+ keys->tags.flow_label = ip6_flowlabel(key_iph);
keys->basic.ip_proto = key_iph->nexthdr;
}
}
@@ -1889,7 +1889,7 @@ u32 rt6_multipath_hash(const struct net *net, const struct flowi6 *fl6,
} else {
hash_keys.addrs.v6addrs.src = fl6->saddr;
hash_keys.addrs.v6addrs.dst = fl6->daddr;
- hash_keys.tags.flow_label = (__force u32)fl6->flowlabel;
+ hash_keys.tags.flow_label = (__force u32)flowi6_get_flowlabel(fl6);
hash_keys.basic.ip_proto = fl6->flowi6_proto;
}
break;
diff --git a/net/l2tp/l2tp_ppp.c b/net/l2tp/l2tp_ppp.c
index 1fd9e145076a..466f17646625 100644
--- a/net/l2tp/l2tp_ppp.c
+++ b/net/l2tp/l2tp_ppp.c
@@ -428,16 +428,6 @@ static void pppol2tp_put_sk(struct rcu_head *head)
*/
static void pppol2tp_session_close(struct l2tp_session *session)
{
- struct pppol2tp_session *ps;
-
- ps = l2tp_session_priv(session);
- mutex_lock(&ps->sk_lock);
- ps->__sk = rcu_dereference_protected(ps->sk,
- lockdep_is_held(&ps->sk_lock));
- RCU_INIT_POINTER(ps->sk, NULL);
- if (ps->__sk)
- call_rcu(&ps->rcu, pppol2tp_put_sk);
- mutex_unlock(&ps->sk_lock);
}

/* Really kill the session socket. (Called from sock_put() if
@@ -480,15 +470,24 @@ static int pppol2tp_release(struct socket *sock)
sock_orphan(sk);
sock->sk = NULL;

- /* If the socket is associated with a session,
- * l2tp_session_delete will call pppol2tp_session_close which
- * will drop the session's ref on the socket.
- */
session = pppol2tp_sock_to_session(sk);
if (session) {
+ struct pppol2tp_session *ps;
+
l2tp_session_delete(session);
- /* drop the ref obtained by pppol2tp_sock_to_session */
- sock_put(sk);
+
+ ps = l2tp_session_priv(session);
+ mutex_lock(&ps->sk_lock);
+ ps->__sk = rcu_dereference_protected(ps->sk,
+ lockdep_is_held(&ps->sk_lock));
+ RCU_INIT_POINTER(ps->sk, NULL);
+ mutex_unlock(&ps->sk_lock);
+ call_rcu(&ps->rcu, pppol2tp_put_sk);
+
+ /* Rely on the sock_put() call at the end of the function for
+ * dropping the reference held by pppol2tp_sock_to_session().
+ * The last reference will be dropped by pppol2tp_put_sk().
+ */
}

release_sock(sk);
@@ -742,7 +741,8 @@ static int pppol2tp_connect(struct socket *sock, struct sockaddr *uservaddr,
*/
mutex_lock(&ps->sk_lock);
if (rcu_dereference_protected(ps->sk,
- lockdep_is_held(&ps->sk_lock))) {
+ lockdep_is_held(&ps->sk_lock)) ||
+ ps->__sk) {
mutex_unlock(&ps->sk_lock);
error = -EEXIST;
goto end;
@@ -803,7 +803,6 @@ static int pppol2tp_connect(struct socket *sock, struct sockaddr *uservaddr,

out_no_ppp:
/* This is how we get the session context from the socket. */
- sock_hold(sk);
sk->sk_user_data = session;
rcu_assign_pointer(ps->sk, sk);
mutex_unlock(&ps->sk_lock);
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index acb7b86574cd..60c2a252bdf5 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -4282,7 +4282,7 @@ static int packet_set_ring(struct sock *sk, union tpacket_req_u *req_u,
goto out;
if (po->tp_version >= TPACKET_V3 &&
req->tp_block_size <=
- BLK_PLUS_PRIV((u64)req_u->req3.tp_sizeof_priv))
+ BLK_PLUS_PRIV((u64)req_u->req3.tp_sizeof_priv) + sizeof(struct tpacket3_hdr))
goto out;
if (unlikely(req->tp_frame_size < po->tp_hdrlen +
po->tp_reserve))
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 47f82bd794d9..03fc2c427aca 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -634,7 +634,7 @@ unsigned long sctp_transport_timeout(struct sctp_transport *trans)
trans->state != SCTP_PF)
timeout += trans->hbinterval;

- return timeout;
+ return max_t(unsigned long, timeout, HZ / 5);
}

/* Reset transport variables to their initial values */
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