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SubjectRe: Linux 4.15.3
diff --git a/Makefile b/Makefile
index 54f1bc10b531..13566ad7863a 100644
--- a/Makefile
+++ b/Makefile
@@ -1,7 +1,7 @@
# SPDX-License-Identifier: GPL-2.0
VERSION = 4
PATCHLEVEL = 15
-SUBLEVEL = 2
+SUBLEVEL = 3
EXTRAVERSION =
NAME = Fearless Coyote

diff --git a/crypto/tcrypt.c b/crypto/tcrypt.c
index 9267cbdb14d2..3ced1ba1fd11 100644
--- a/crypto/tcrypt.c
+++ b/crypto/tcrypt.c
@@ -198,11 +198,13 @@ static void sg_init_aead(struct scatterlist *sg, char *xbuf[XBUFSIZE],
}

sg_init_table(sg, np + 1);
- np--;
+ if (rem)
+ np--;
for (k = 0; k < np; k++)
sg_set_buf(&sg[k + 1], xbuf[k], PAGE_SIZE);

- sg_set_buf(&sg[k + 1], xbuf[k], rem);
+ if (rem)
+ sg_set_buf(&sg[k + 1], xbuf[k], rem);
}

static void test_aead_speed(const char *algo, int enc, unsigned int secs,
diff --git a/drivers/gpio/gpio-uniphier.c b/drivers/gpio/gpio-uniphier.c
index 016d7427ebfa..761d8279abca 100644
--- a/drivers/gpio/gpio-uniphier.c
+++ b/drivers/gpio/gpio-uniphier.c
@@ -505,4 +505,4 @@ module_platform_driver(uniphier_gpio_driver);

MODULE_AUTHOR("Masahiro Yamada <yamada.masahiro@socionext.com>");
MODULE_DESCRIPTION("UniPhier GPIO driver");
-MODULE_LICENSE("GPL");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/media/platform/mtk-vcodec/mtk_vcodec_util.c b/drivers/media/platform/mtk-vcodec/mtk_vcodec_util.c
index 46768c056193..0c28d0b995cc 100644
--- a/drivers/media/platform/mtk-vcodec/mtk_vcodec_util.c
+++ b/drivers/media/platform/mtk-vcodec/mtk_vcodec_util.c
@@ -115,3 +115,6 @@ struct mtk_vcodec_ctx *mtk_vcodec_get_curr_ctx(struct mtk_vcodec_dev *dev)
return ctx;
}
EXPORT_SYMBOL(mtk_vcodec_get_curr_ctx);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("Mediatek video codec driver");
diff --git a/drivers/media/platform/soc_camera/soc_scale_crop.c b/drivers/media/platform/soc_camera/soc_scale_crop.c
index 270ec613c27c..6164102e6f9f 100644
--- a/drivers/media/platform/soc_camera/soc_scale_crop.c
+++ b/drivers/media/platform/soc_camera/soc_scale_crop.c
@@ -420,3 +420,7 @@ void soc_camera_calc_client_output(struct soc_camera_device *icd,
mf->height = soc_camera_shift_scale(rect->height, shift, scale_v);
}
EXPORT_SYMBOL(soc_camera_calc_client_output);
+
+MODULE_DESCRIPTION("soc-camera scaling-cropping functions");
+MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/platform/tegra-cec/tegra_cec.c b/drivers/media/platform/tegra-cec/tegra_cec.c
index 807c94c70049..92f93a880015 100644
--- a/drivers/media/platform/tegra-cec/tegra_cec.c
+++ b/drivers/media/platform/tegra-cec/tegra_cec.c
@@ -493,3 +493,8 @@ static struct platform_driver tegra_cec_driver = {
};

module_platform_driver(tegra_cec_driver);
+
+MODULE_DESCRIPTION("Tegra HDMI CEC driver");
+MODULE_AUTHOR("NVIDIA CORPORATION");
+MODULE_AUTHOR("Cisco Systems, Inc. and/or its affiliates");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
index f7080d0ab874..46b0372dd032 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_83xx_hw.c
@@ -3891,7 +3891,7 @@ static void qlcnic_83xx_flush_mbx_queue(struct qlcnic_adapter *adapter)
struct list_head *head = &mbx->cmd_q;
struct qlcnic_cmd_args *cmd = NULL;

- spin_lock(&mbx->queue_lock);
+ spin_lock_bh(&mbx->queue_lock);

while (!list_empty(head)) {
cmd = list_entry(head->next, struct qlcnic_cmd_args, list);
@@ -3902,7 +3902,7 @@ static void qlcnic_83xx_flush_mbx_queue(struct qlcnic_adapter *adapter)
qlcnic_83xx_notify_cmd_completion(adapter, cmd);
}

- spin_unlock(&mbx->queue_lock);
+ spin_unlock_bh(&mbx->queue_lock);
}

static int qlcnic_83xx_check_mbx_status(struct qlcnic_adapter *adapter)
@@ -3938,12 +3938,12 @@ static void qlcnic_83xx_dequeue_mbx_cmd(struct qlcnic_adapter *adapter,
{
struct qlcnic_mailbox *mbx = adapter->ahw->mailbox;

- spin_lock(&mbx->queue_lock);
+ spin_lock_bh(&mbx->queue_lock);

list_del(&cmd->list);
mbx->num_cmds--;

- spin_unlock(&mbx->queue_lock);
+ spin_unlock_bh(&mbx->queue_lock);

qlcnic_83xx_notify_cmd_completion(adapter, cmd);
}
@@ -4008,7 +4008,7 @@ static int qlcnic_83xx_enqueue_mbx_cmd(struct qlcnic_adapter *adapter,
init_completion(&cmd->completion);
cmd->rsp_opcode = QLC_83XX_MBX_RESPONSE_UNKNOWN;

- spin_lock(&mbx->queue_lock);
+ spin_lock_bh(&mbx->queue_lock);

list_add_tail(&cmd->list, &mbx->cmd_q);
mbx->num_cmds++;
@@ -4016,7 +4016,7 @@ static int qlcnic_83xx_enqueue_mbx_cmd(struct qlcnic_adapter *adapter,
*timeout = cmd->total_cmds * QLC_83XX_MBX_TIMEOUT;
queue_work(mbx->work_q, &mbx->work);

- spin_unlock(&mbx->queue_lock);
+ spin_unlock_bh(&mbx->queue_lock);

return 0;
}
@@ -4112,15 +4112,15 @@ static void qlcnic_83xx_mailbox_worker(struct work_struct *work)
mbx->rsp_status = QLC_83XX_MBX_RESPONSE_WAIT;
spin_unlock_irqrestore(&mbx->aen_lock, flags);

- spin_lock(&mbx->queue_lock);
+ spin_lock_bh(&mbx->queue_lock);

if (list_empty(head)) {
- spin_unlock(&mbx->queue_lock);
+ spin_unlock_bh(&mbx->queue_lock);
return;
}
cmd = list_entry(head->next, struct qlcnic_cmd_args, list);

- spin_unlock(&mbx->queue_lock);
+ spin_unlock_bh(&mbx->queue_lock);

mbx_ops->encode_cmd(adapter, cmd);
mbx_ops->nofity_fw(adapter, QLC_83XX_MBX_REQUEST);
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 734286ebe5ef..dd713dff8d22 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -1395,7 +1395,7 @@ DECLARE_RTL_COND(rtl_ocp_tx_cond)
{
void __iomem *ioaddr = tp->mmio_addr;

- return RTL_R8(IBISR0) & 0x02;
+ return RTL_R8(IBISR0) & 0x20;
}

static void rtl8168ep_stop_cmac(struct rtl8169_private *tp)
@@ -1403,7 +1403,7 @@ static void rtl8168ep_stop_cmac(struct rtl8169_private *tp)
void __iomem *ioaddr = tp->mmio_addr;

RTL_W8(IBCR2, RTL_R8(IBCR2) & ~0x01);
- rtl_msleep_loop_wait_low(tp, &rtl_ocp_tx_cond, 50, 2000);
+ rtl_msleep_loop_wait_high(tp, &rtl_ocp_tx_cond, 50, 2000);
RTL_W8(IBISR0, RTL_R8(IBISR0) | 0x20);
RTL_W8(IBCR0, RTL_R8(IBCR0) & ~0x01);
}
diff --git a/drivers/net/ethernet/rocker/rocker_main.c b/drivers/net/ethernet/rocker/rocker_main.c
index fc8f8bdf6579..056cb6093630 100644
--- a/drivers/net/ethernet/rocker/rocker_main.c
+++ b/drivers/net/ethernet/rocker/rocker_main.c
@@ -2902,6 +2902,12 @@ static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)
goto err_alloc_ordered_workqueue;
}

+ err = rocker_probe_ports(rocker);
+ if (err) {
+ dev_err(&pdev->dev, "failed to probe ports\n");
+ goto err_probe_ports;
+ }
+
/* Only FIBs pointing to our own netdevs are programmed into
* the device, so no need to pass a callback.
*/
@@ -2918,22 +2924,16 @@ static int rocker_probe(struct pci_dev *pdev, const struct pci_device_id *id)

rocker->hw.id = rocker_read64(rocker, SWITCH_ID);

- err = rocker_probe_ports(rocker);
- if (err) {
- dev_err(&pdev->dev, "failed to probe ports\n");
- goto err_probe_ports;
- }
-
dev_info(&pdev->dev, "Rocker switch with id %*phN\n",
(int)sizeof(rocker->hw.id), &rocker->hw.id);

return 0;

-err_probe_ports:
- unregister_switchdev_notifier(&rocker_switchdev_notifier);
err_register_switchdev_notifier:
unregister_fib_notifier(&rocker->fib_nb);
err_register_fib_notifier:
+ rocker_remove_ports(rocker);
+err_probe_ports:
destroy_workqueue(rocker->rocker_owq);
err_alloc_ordered_workqueue:
free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
@@ -2961,9 +2961,9 @@ static void rocker_remove(struct pci_dev *pdev)
{
struct rocker *rocker = pci_get_drvdata(pdev);

- rocker_remove_ports(rocker);
unregister_switchdev_notifier(&rocker_switchdev_notifier);
unregister_fib_notifier(&rocker->fib_nb);
+ rocker_remove_ports(rocker);
rocker_write32(rocker, CONTROL, ROCKER_CONTROL_RESET);
destroy_workqueue(rocker->rocker_owq);
free_irq(rocker_msix_vector(rocker, ROCKER_MSIX_VEC_EVENT), rocker);
diff --git a/drivers/net/usb/qmi_wwan.c b/drivers/net/usb/qmi_wwan.c
index 728819feab44..e7114c34fe4b 100644
--- a/drivers/net/usb/qmi_wwan.c
+++ b/drivers/net/usb/qmi_wwan.c
@@ -1245,6 +1245,7 @@ static const struct usb_device_id products[] = {
{QMI_QUIRK_SET_DTR(0x2c7c, 0x0125, 4)}, /* Quectel EC25, EC20 R2.0 Mini PCIe */
{QMI_QUIRK_SET_DTR(0x2c7c, 0x0121, 4)}, /* Quectel EC21 Mini PCIe */
{QMI_FIXED_INTF(0x2c7c, 0x0296, 4)}, /* Quectel BG96 */
+ {QMI_QUIRK_SET_DTR(0x2c7c, 0x0306, 4)}, /* Quectel EP06 Mini PCIe */

/* 4. Gobi 1000 devices */
{QMI_GOBI1K_DEVICE(0x05c6, 0x9212)}, /* Acer Gobi Modem Device */
diff --git a/drivers/vhost/net.c b/drivers/vhost/net.c
index c7bdeb655646..5636c7ca8eba 100644
--- a/drivers/vhost/net.c
+++ b/drivers/vhost/net.c
@@ -1208,6 +1208,7 @@ static long vhost_net_reset_owner(struct vhost_net *n)
}
vhost_net_stop(n, &tx_sock, &rx_sock);
vhost_net_flush(n);
+ vhost_dev_stop(&n->dev);
vhost_dev_reset_owner(&n->dev, umem);
vhost_net_vq_reset(n);
done:
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index becf86aa4ac6..d6ec5a5a6782 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -280,7 +280,6 @@ struct tcf_block {
struct net *net;
struct Qdisc *q;
struct list_head cb_list;
- struct work_struct work;
};

static inline void qdisc_cb_private_validate(const struct sk_buff *skb, int sz)
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index ac2ffd5e02b9..0a78ce57872d 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -5828,6 +5828,20 @@ void mem_cgroup_sk_alloc(struct sock *sk)
if (!mem_cgroup_sockets_enabled)
return;

+ /*
+ * Socket cloning can throw us here with sk_memcg already
+ * filled. It won't however, necessarily happen from
+ * process context. So the test for root memcg given
+ * the current task's memcg won't help us in this case.
+ *
+ * Respecting the original socket's memcg is a better
+ * decision in this case.
+ */
+ if (sk->sk_memcg) {
+ css_get(&sk->sk_memcg->css);
+ return;
+ }
+
rcu_read_lock();
memcg = mem_cgroup_from_task(current);
if (memcg == root_mem_cgroup)
diff --git a/net/core/sock.c b/net/core/sock.c
index c0b5b2f17412..7571dabfc4cf 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -1675,16 +1675,13 @@ struct sock *sk_clone_lock(const struct sock *sk, const gfp_t priority)
newsk->sk_dst_pending_confirm = 0;
newsk->sk_wmem_queued = 0;
newsk->sk_forward_alloc = 0;
-
- /* sk->sk_memcg will be populated at accept() time */
- newsk->sk_memcg = NULL;
-
atomic_set(&newsk->sk_drops, 0);
newsk->sk_send_head = NULL;
newsk->sk_userlocks = sk->sk_userlocks & ~SOCK_BINDPORT_LOCK;
atomic_set(&newsk->sk_zckey, 0);

sock_reset_flag(newsk, SOCK_DONE);
+ mem_cgroup_sk_alloc(newsk);
cgroup_sk_alloc(&newsk->sk_cgrp_data);

rcu_read_lock();
diff --git a/net/core/sock_reuseport.c b/net/core/sock_reuseport.c
index 5eeb1d20cc38..676092d7bd81 100644
--- a/net/core/sock_reuseport.c
+++ b/net/core/sock_reuseport.c
@@ -94,6 +94,16 @@ static struct sock_reuseport *reuseport_grow(struct sock_reuseport *reuse)
return more_reuse;
}

+static void reuseport_free_rcu(struct rcu_head *head)
+{
+ struct sock_reuseport *reuse;
+
+ reuse = container_of(head, struct sock_reuseport, rcu);
+ if (reuse->prog)
+ bpf_prog_destroy(reuse->prog);
+ kfree(reuse);
+}
+
/**
* reuseport_add_sock - Add a socket to the reuseport group of another.
* @sk: New socket to add to the group.
@@ -102,7 +112,7 @@ static struct sock_reuseport *reuseport_grow(struct sock_reuseport *reuse)
*/
int reuseport_add_sock(struct sock *sk, struct sock *sk2)
{
- struct sock_reuseport *reuse;
+ struct sock_reuseport *old_reuse, *reuse;

if (!rcu_access_pointer(sk2->sk_reuseport_cb)) {
int err = reuseport_alloc(sk2);
@@ -113,10 +123,13 @@ int reuseport_add_sock(struct sock *sk, struct sock *sk2)

spin_lock_bh(&reuseport_lock);
reuse = rcu_dereference_protected(sk2->sk_reuseport_cb,
- lockdep_is_held(&reuseport_lock)),
- WARN_ONCE(rcu_dereference_protected(sk->sk_reuseport_cb,
- lockdep_is_held(&reuseport_lock)),
- "socket already in reuseport group");
+ lockdep_is_held(&reuseport_lock));
+ old_reuse = rcu_dereference_protected(sk->sk_reuseport_cb,
+ lockdep_is_held(&reuseport_lock));
+ if (old_reuse && old_reuse->num_socks != 1) {
+ spin_unlock_bh(&reuseport_lock);
+ return -EBUSY;
+ }

if (reuse->num_socks == reuse->max_socks) {
reuse = reuseport_grow(reuse);
@@ -134,19 +147,11 @@ int reuseport_add_sock(struct sock *sk, struct sock *sk2)

spin_unlock_bh(&reuseport_lock);

+ if (old_reuse)
+ call_rcu(&old_reuse->rcu, reuseport_free_rcu);
return 0;
}

-static void reuseport_free_rcu(struct rcu_head *head)
-{
- struct sock_reuseport *reuse;
-
- reuse = container_of(head, struct sock_reuseport, rcu);
- if (reuse->prog)
- bpf_prog_destroy(reuse->prog);
- kfree(reuse);
-}
-
void reuseport_detach_sock(struct sock *sk)
{
struct sock_reuseport *reuse;
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 2d49717a7421..f0b1fc35dde1 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -386,7 +386,11 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, unsigned int mtu)
pip->frag_off = htons(IP_DF);
pip->ttl = 1;
pip->daddr = fl4.daddr;
+
+ rcu_read_lock();
pip->saddr = igmpv3_get_srcaddr(dev, &fl4);
+ rcu_read_unlock();
+
pip->protocol = IPPROTO_IGMP;
pip->tot_len = 0; /* filled in later */
ip_select_ident(net, skb, NULL);
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 4ca46dc08e63..3668c4182655 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -475,7 +475,6 @@ struct sock *inet_csk_accept(struct sock *sk, int flags, int *err, bool kern)
}
spin_unlock_bh(&queue->fastopenq.lock);
}
- mem_cgroup_sk_alloc(newsk);
out:
release_sock(sk);
if (req)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 8e053ad7cae2..c821f5d68720 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2434,6 +2434,12 @@ int tcp_disconnect(struct sock *sk, int flags)

WARN_ON(inet->inet_num && !icsk->icsk_bind_hash);

+ if (sk->sk_frag.page) {
+ put_page(sk->sk_frag.page);
+ sk->sk_frag.page = NULL;
+ sk->sk_frag.offset = 0;
+ }
+
sk->sk_error_report(sk);
return err;
}
diff --git a/net/ipv4/tcp_bbr.c b/net/ipv4/tcp_bbr.c
index 8322f26e770e..25c5a0b60cfc 100644
--- a/net/ipv4/tcp_bbr.c
+++ b/net/ipv4/tcp_bbr.c
@@ -481,7 +481,8 @@ static void bbr_advance_cycle_phase(struct sock *sk)

bbr->cycle_idx = (bbr->cycle_idx + 1) & (CYCLE_LEN - 1);
bbr->cycle_mstamp = tp->delivered_mstamp;
- bbr->pacing_gain = bbr_pacing_gain[bbr->cycle_idx];
+ bbr->pacing_gain = bbr->lt_use_bw ? BBR_UNIT :
+ bbr_pacing_gain[bbr->cycle_idx];
}

/* Gain cycling: cycle pacing gain to converge to fair share of available bw. */
@@ -490,8 +491,7 @@ static void bbr_update_cycle_phase(struct sock *sk,
{
struct bbr *bbr = inet_csk_ca(sk);

- if ((bbr->mode == BBR_PROBE_BW) && !bbr->lt_use_bw &&
- bbr_is_next_cycle_phase(sk, rs))
+ if (bbr->mode == BBR_PROBE_BW && bbr_is_next_cycle_phase(sk, rs))
bbr_advance_cycle_phase(sk);
}

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index f49bd7897e95..2547222589fe 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -186,7 +186,8 @@ static struct rt6_info *addrconf_get_prefix_route(const struct in6_addr *pfx,

static void addrconf_dad_start(struct inet6_ifaddr *ifp);
static void addrconf_dad_work(struct work_struct *w);
-static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id);
+static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id,
+ bool send_na);
static void addrconf_dad_run(struct inet6_dev *idev);
static void addrconf_rs_timer(struct timer_list *t);
static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa);
@@ -3833,12 +3834,17 @@ static void addrconf_dad_begin(struct inet6_ifaddr *ifp)
idev->cnf.accept_dad < 1) ||
!(ifp->flags&IFA_F_TENTATIVE) ||
ifp->flags & IFA_F_NODAD) {
+ bool send_na = false;
+
+ if (ifp->flags & IFA_F_TENTATIVE &&
+ !(ifp->flags & IFA_F_OPTIMISTIC))
+ send_na = true;
bump_id = ifp->flags & IFA_F_TENTATIVE;
ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
spin_unlock(&ifp->lock);
read_unlock_bh(&idev->lock);

- addrconf_dad_completed(ifp, bump_id);
+ addrconf_dad_completed(ifp, bump_id, send_na);
return;
}

@@ -3967,16 +3973,21 @@ static void addrconf_dad_work(struct work_struct *w)
}

if (ifp->dad_probes == 0) {
+ bool send_na = false;
+
/*
* DAD was successful
*/

+ if (ifp->flags & IFA_F_TENTATIVE &&
+ !(ifp->flags & IFA_F_OPTIMISTIC))
+ send_na = true;
bump_id = ifp->flags & IFA_F_TENTATIVE;
ifp->flags &= ~(IFA_F_TENTATIVE|IFA_F_OPTIMISTIC|IFA_F_DADFAILED);
spin_unlock(&ifp->lock);
write_unlock_bh(&idev->lock);

- addrconf_dad_completed(ifp, bump_id);
+ addrconf_dad_completed(ifp, bump_id, send_na);

goto out;
}
@@ -4014,7 +4025,8 @@ static bool ipv6_lonely_lladdr(struct inet6_ifaddr *ifp)
return true;
}

-static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id)
+static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id,
+ bool send_na)
{
struct net_device *dev = ifp->idev->dev;
struct in6_addr lladdr;
@@ -4046,6 +4058,16 @@ static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id)
if (send_mld)
ipv6_mc_dad_complete(ifp->idev);

+ /* send unsolicited NA if enabled */
+ if (send_na &&
+ (ifp->idev->cnf.ndisc_notify ||
+ dev_net(dev)->ipv6.devconf_all->ndisc_notify)) {
+ ndisc_send_na(dev, &in6addr_linklocal_allnodes, &ifp->addr,
+ /*router=*/ !!ifp->idev->cnf.forwarding,
+ /*solicited=*/ false, /*override=*/ true,
+ /*inc_opt=*/ true);
+ }
+
if (send_rs) {
/*
* If a host as already performed a random delay
@@ -4352,9 +4374,11 @@ static void addrconf_verify_rtnl(void)
spin_lock(&ifpub->lock);
ifpub->regen_count = 0;
spin_unlock(&ifpub->lock);
+ rcu_read_unlock_bh();
ipv6_create_tempaddr(ifpub, ifp, true);
in6_ifa_put(ifpub);
in6_ifa_put(ifp);
+ rcu_read_lock_bh();
goto restart;
}
} else if (time_before(ifp->tstamp + ifp->prefered_lft * HZ - regen_advance * HZ, next))
diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index c9441ca45399..416917719a6f 100644
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -284,6 +284,7 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
struct net *net = sock_net(sk);
__be32 v4addr = 0;
unsigned short snum;
+ bool saved_ipv6only;
int addr_type = 0;
int err = 0;

@@ -389,19 +390,21 @@ int inet6_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
if (!(addr_type & IPV6_ADDR_MULTICAST))
np->saddr = addr->sin6_addr;

+ saved_ipv6only = sk->sk_ipv6only;
+ if (addr_type != IPV6_ADDR_ANY && addr_type != IPV6_ADDR_MAPPED)
+ sk->sk_ipv6only = 1;
+
/* Make sure we are allowed to bind here. */
if ((snum || !inet->bind_address_no_port) &&
sk->sk_prot->get_port(sk, snum)) {
+ sk->sk_ipv6only = saved_ipv6only;
inet_reset_saddr(sk);
err = -EADDRINUSE;
goto out;
}

- if (addr_type != IPV6_ADDR_ANY) {
+ if (addr_type != IPV6_ADDR_ANY)
sk->sk_userlocks |= SOCK_BINDADDR_LOCK;
- if (addr_type != IPV6_ADDR_MAPPED)
- sk->sk_ipv6only = 1;
- }
if (snum)
sk->sk_userlocks |= SOCK_BINDPORT_LOCK;
inet->inet_sport = htons(inet->inet_num);
diff --git a/net/ipv6/ip6mr.c b/net/ipv6/ip6mr.c
index a2e1a864eb46..4fc566ec7e79 100644
--- a/net/ipv6/ip6mr.c
+++ b/net/ipv6/ip6mr.c
@@ -495,6 +495,7 @@ static void *ipmr_mfc_seq_start(struct seq_file *seq, loff_t *pos)
return ERR_PTR(-ENOENT);

it->mrt = mrt;
+ it->cache = NULL;
return *pos ? ipmr_mfc_seq_idx(net, seq->private, *pos - 1)
: SEQ_START_TOKEN;
}
diff --git a/net/ipv6/ndisc.c b/net/ipv6/ndisc.c
index b3cea200c85e..f61a5b613b52 100644
--- a/net/ipv6/ndisc.c
+++ b/net/ipv6/ndisc.c
@@ -566,6 +566,11 @@ static void ndisc_send_unsol_na(struct net_device *dev)

read_lock_bh(&idev->lock);
list_for_each_entry(ifa, &idev->addr_list, if_list) {
+ /* skip tentative addresses until dad completes */
+ if (ifa->flags & IFA_F_TENTATIVE &&
+ !(ifa->flags & IFA_F_OPTIMISTIC))
+ continue;
+
ndisc_send_na(dev, &in6addr_linklocal_allnodes, &ifa->addr,
/*router=*/ !!idev->cnf.forwarding,
/*solicited=*/ false, /*override=*/ true,
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 0458b761f3c5..a560fb1d0230 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1586,12 +1586,19 @@ static void rt6_age_examine_exception(struct rt6_exception_bucket *bucket,
* EXPIRES exceptions - e.g. pmtu-generated ones are pruned when
* expired, independently from their aging, as per RFC 8201 section 4
*/
- if (!(rt->rt6i_flags & RTF_EXPIRES) &&
- time_after_eq(now, rt->dst.lastuse + gc_args->timeout)) {
- RT6_TRACE("aging clone %p\n", rt);
+ if (!(rt->rt6i_flags & RTF_EXPIRES)) {
+ if (time_after_eq(now, rt->dst.lastuse + gc_args->timeout)) {
+ RT6_TRACE("aging clone %p\n", rt);
+ rt6_remove_exception(bucket, rt6_ex);
+ return;
+ }
+ } else if (time_after(jiffies, rt->dst.expires)) {
+ RT6_TRACE("purging expired route %p\n", rt);
rt6_remove_exception(bucket, rt6_ex);
return;
- } else if (rt->rt6i_flags & RTF_GATEWAY) {
+ }
+
+ if (rt->rt6i_flags & RTF_GATEWAY) {
struct neighbour *neigh;
__u8 neigh_flags = 0;

@@ -1606,11 +1613,8 @@ static void rt6_age_examine_exception(struct rt6_exception_bucket *bucket,
rt6_remove_exception(bucket, rt6_ex);
return;
}
- } else if (__rt6_check_expired(rt)) {
- RT6_TRACE("purging expired route %p\n", rt);
- rt6_remove_exception(bucket, rt6_ex);
- return;
}
+
gc_args->more++;
}

diff --git a/net/sched/cls_api.c b/net/sched/cls_api.c
index b9d63d2246e6..e6b853f0ee4f 100644
--- a/net/sched/cls_api.c
+++ b/net/sched/cls_api.c
@@ -217,8 +217,12 @@ static void tcf_chain_flush(struct tcf_chain *chain)

static void tcf_chain_destroy(struct tcf_chain *chain)
{
+ struct tcf_block *block = chain->block;
+
list_del(&chain->list);
kfree(chain);
+ if (list_empty(&block->chain_list))
+ kfree(block);
}

static void tcf_chain_hold(struct tcf_chain *chain)
@@ -329,49 +333,34 @@ int tcf_block_get(struct tcf_block **p_block,
}
EXPORT_SYMBOL(tcf_block_get);

-static void tcf_block_put_final(struct work_struct *work)
-{
- struct tcf_block *block = container_of(work, struct tcf_block, work);
- struct tcf_chain *chain, *tmp;
-
- rtnl_lock();
-
- /* At this point, all the chains should have refcnt == 1. */
- list_for_each_entry_safe(chain, tmp, &block->chain_list, list)
- tcf_chain_put(chain);
- rtnl_unlock();
- kfree(block);
-}
-
/* XXX: Standalone actions are not allowed to jump to any chain, and bound
* actions should be all removed after flushing.
*/
void tcf_block_put_ext(struct tcf_block *block, struct Qdisc *q,
struct tcf_block_ext_info *ei)
{
- struct tcf_chain *chain;
+ struct tcf_chain *chain, *tmp;

if (!block)
return;
- /* Hold a refcnt for all chains, except 0, so that they don't disappear
+ /* Hold a refcnt for all chains, so that they don't disappear
* while we are iterating.
*/
list_for_each_entry(chain, &block->chain_list, list)
- if (chain->index)
- tcf_chain_hold(chain);
+ tcf_chain_hold(chain);

list_for_each_entry(chain, &block->chain_list, list)
tcf_chain_flush(chain);

tcf_block_offload_unbind(block, q, ei);

- INIT_WORK(&block->work, tcf_block_put_final);
- /* Wait for existing RCU callbacks to cool down, make sure their works
- * have been queued before this. We can not flush pending works here
- * because we are holding the RTNL lock.
- */
- rcu_barrier();
- tcf_queue_work(&block->work);
+ /* At this point, all the chains should have refcnt >= 1. */
+ list_for_each_entry_safe(chain, tmp, &block->chain_list, list)
+ tcf_chain_put(chain);
+
+ /* Finally, put chain 0 and allow block to be freed. */
+ chain = list_first_entry(&block->chain_list, struct tcf_chain, list);
+ tcf_chain_put(chain);
}
EXPORT_SYMBOL(tcf_block_put_ext);

diff --git a/net/sched/cls_u32.c b/net/sched/cls_u32.c
index 507859cdd1cb..33294b5b2c6a 100644
--- a/net/sched/cls_u32.c
+++ b/net/sched/cls_u32.c
@@ -544,6 +544,7 @@ static void u32_remove_hw_knode(struct tcf_proto *tp, u32 handle)
static int u32_replace_hw_knode(struct tcf_proto *tp, struct tc_u_knode *n,
u32 flags)
{
+ struct tc_u_hnode *ht = rtnl_dereference(n->ht_down);
struct tcf_block *block = tp->chain->block;
struct tc_cls_u32_offload cls_u32 = {};
bool skip_sw = tc_skip_sw(flags);
@@ -563,7 +564,7 @@ static int u32_replace_hw_knode(struct tcf_proto *tp, struct tc_u_knode *n,
cls_u32.knode.sel = &n->sel;
cls_u32.knode.exts = &n->exts;
if (n->ht_down)
- cls_u32.knode.link_handle = n->ht_down->handle;
+ cls_u32.knode.link_handle = ht->handle;

err = tc_setup_cb_call(block, NULL, TC_SETUP_CLSU32, &cls_u32, skip_sw);
if (err < 0) {
@@ -840,8 +841,9 @@ static void u32_replace_knode(struct tcf_proto *tp, struct tc_u_common *tp_c,
static struct tc_u_knode *u32_init_knode(struct tcf_proto *tp,
struct tc_u_knode *n)
{
- struct tc_u_knode *new;
+ struct tc_u_hnode *ht = rtnl_dereference(n->ht_down);
struct tc_u32_sel *s = &n->sel;
+ struct tc_u_knode *new;

new = kzalloc(sizeof(*n) + s->nkeys*sizeof(struct tc_u32_key),
GFP_KERNEL);
@@ -859,11 +861,11 @@ static struct tc_u_knode *u32_init_knode(struct tcf_proto *tp,
new->fshift = n->fshift;
new->res = n->res;
new->flags = n->flags;
- RCU_INIT_POINTER(new->ht_down, n->ht_down);
+ RCU_INIT_POINTER(new->ht_down, ht);

/* bump reference count as long as we hold pointer to structure */
- if (new->ht_down)
- new->ht_down->refcnt++;
+ if (ht)
+ ht->refcnt++;

#ifdef CONFIG_CLS_U32_PERF
/* Statistics may be incremented by readers during update
\
 
 \ /
  Last update: 2018-02-13 10:34    [W:0.043 / U:0.724 seconds]
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