From 6baeafd1f2a54ca041ff71778ebda9fac75aad12 Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Tue, 13 Dec 2016 20:16:40 -0300 Subject: Linux-libre 4.8.14-gnu --- net/batman-adv/tp_meter.c | 1 + net/core/flow.c | 6 ++-- net/core/net_namespace.c | 2 ++ net/core/rtnetlink.c | 7 +++-- net/core/sock.c | 4 +-- net/dccp/ipv4.c | 12 ++++---- net/dsa/dsa2.c | 4 ++- net/ipv4/af_inet.c | 2 +- net/ipv4/esp4.c | 2 +- net/ipv4/fib_frontend.c | 20 +++++++++---- net/ipv4/fib_trie.c | 72 +++++++++++++++++++++++++---------------------- net/ipv4/ip_output.c | 3 ++ net/ipv4/ping.c | 4 +++ net/ipv4/udp.c | 2 +- net/ipv4/udp_impl.h | 2 +- net/ipv4/udplite.c | 2 +- net/ipv6/addrconf.c | 18 ++++++++---- net/ipv6/esp6.c | 2 +- net/ipv6/icmp.c | 6 ++-- net/ipv6/ip6_offload.c | 2 +- net/ipv6/ip6_tunnel.c | 14 +++++++-- net/ipv6/output_core.c | 2 ++ net/ipv6/udp.c | 2 +- net/ipv6/udp_impl.h | 2 +- net/ipv6/udplite.c | 2 +- net/l2tp/l2tp_ip.c | 5 ++-- net/l2tp/l2tp_ip6.c | 5 ++-- net/netlink/af_netlink.c | 21 ++++++++++++-- net/netlink/af_netlink.h | 2 ++ net/sched/act_pedit.c | 24 +++++++++++++--- net/sched/cls_basic.c | 4 --- net/sched/cls_bpf.c | 4 --- net/sched/cls_cgroup.c | 7 ++--- net/sched/cls_flow.c | 1 - net/sched/cls_flower.c | 31 ++++++++++++++++---- net/sched/cls_matchall.c | 1 - net/sched/cls_rsvp.h | 3 +- net/sched/cls_tcindex.c | 1 - net/tipc/bearer.c | 11 ++++++-- net/tipc/bearer.h | 13 +++++++++ net/tipc/udp_media.c | 5 ++++ net/unix/af_unix.c | 17 +++++++---- 42 files changed, 237 insertions(+), 113 deletions(-) (limited to 'net') diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c index 2333777f9..8af1611b8 100644 --- a/net/batman-adv/tp_meter.c +++ b/net/batman-adv/tp_meter.c @@ -837,6 +837,7 @@ static int batadv_tp_send(void *arg) primary_if = batadv_primary_if_get_selected(bat_priv); if (unlikely(!primary_if)) { err = BATADV_TP_REASON_DST_UNREACHABLE; + tp_vars->reason = err; goto out; } diff --git a/net/core/flow.c b/net/core/flow.c index 3937b1b68..18e8893d4 100644 --- a/net/core/flow.c +++ b/net/core/flow.c @@ -95,7 +95,6 @@ static void flow_cache_gc_task(struct work_struct *work) list_for_each_entry_safe(fce, n, &gc_list, u.gc_list) { flow_entry_kill(fce, xfrm); atomic_dec(&xfrm->flow_cache_gc_count); - WARN_ON(atomic_read(&xfrm->flow_cache_gc_count) < 0); } } @@ -236,9 +235,8 @@ flow_cache_lookup(struct net *net, const struct flowi *key, u16 family, u8 dir, if (fcp->hash_count > fc->high_watermark) flow_cache_shrink(fc, fcp); - if (fcp->hash_count > 2 * fc->high_watermark || - atomic_read(&net->xfrm.flow_cache_gc_count) > fc->high_watermark) { - atomic_inc(&net->xfrm.flow_cache_genid); + if (atomic_read(&net->xfrm.flow_cache_gc_count) > + 2 * num_online_cpus() * fc->high_watermark) { flo = ERR_PTR(-ENOBUFS); goto ret_object; } diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 2c2eb1b62..2e9a1c281 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -217,6 +217,8 @@ int peernet2id_alloc(struct net *net, struct net *peer) bool alloc; int id; + if (atomic_read(&net->count) == 0) + return NETNSA_NSID_NOT_ASSIGNED; spin_lock_irqsave(&net->nsid_lock, flags); alloc = atomic_read(&peer->count) == 0 ? false : true; id = __peernet2id_alloc(net, peer, &alloc); diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 189cc78c7..08c3702f7 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -1578,7 +1578,7 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) head = &net->dev_index_head[h]; hlist_for_each_entry(dev, head, index_hlist) { if (link_dump_filtered(dev, master_idx, kind_ops)) - continue; + goto cont; if (idx < s_idx) goto cont; err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, @@ -2791,7 +2791,10 @@ nla_put_failure: static inline size_t rtnl_fdb_nlmsg_size(void) { - return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN); + return NLMSG_ALIGN(sizeof(struct ndmsg)) + + nla_total_size(ETH_ALEN) + /* NDA_LLADDR */ + nla_total_size(sizeof(u16)) + /* NDA_VLAN */ + 0; } static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type, diff --git a/net/core/sock.c b/net/core/sock.c index 10acaccca..ba27920b6 100644 --- a/net/core/sock.c +++ b/net/core/sock.c @@ -715,7 +715,7 @@ int sock_setsockopt(struct socket *sock, int level, int optname, val = min_t(u32, val, sysctl_wmem_max); set_sndbuf: sk->sk_userlocks |= SOCK_SNDBUF_LOCK; - sk->sk_sndbuf = max_t(u32, val * 2, SOCK_MIN_SNDBUF); + sk->sk_sndbuf = max_t(int, val * 2, SOCK_MIN_SNDBUF); /* Wake up sending tasks if we upped the value. */ sk->sk_write_space(sk); break; @@ -751,7 +751,7 @@ set_rcvbuf: * returning the value we actually used in getsockopt * is the most desirable behavior. */ - sk->sk_rcvbuf = max_t(u32, val * 2, SOCK_MIN_RCVBUF); + sk->sk_rcvbuf = max_t(int, val * 2, SOCK_MIN_RCVBUF); break; case SO_RCVBUFFORCE: diff --git a/net/dccp/ipv4.c b/net/dccp/ipv4.c index b567c8725..edbe59d20 100644 --- a/net/dccp/ipv4.c +++ b/net/dccp/ipv4.c @@ -700,6 +700,7 @@ int dccp_invalid_packet(struct sk_buff *skb) { const struct dccp_hdr *dh; unsigned int cscov; + u8 dccph_doff; if (skb->pkt_type != PACKET_HOST) return 1; @@ -721,18 +722,19 @@ int dccp_invalid_packet(struct sk_buff *skb) /* * If P.Data Offset is too small for packet type, drop packet and return */ - if (dh->dccph_doff < dccp_hdr_len(skb) / sizeof(u32)) { - DCCP_WARN("P.Data Offset(%u) too small\n", dh->dccph_doff); + dccph_doff = dh->dccph_doff; + if (dccph_doff < dccp_hdr_len(skb) / sizeof(u32)) { + DCCP_WARN("P.Data Offset(%u) too small\n", dccph_doff); return 1; } /* * If P.Data Offset is too too large for packet, drop packet and return */ - if (!pskb_may_pull(skb, dh->dccph_doff * sizeof(u32))) { - DCCP_WARN("P.Data Offset(%u) too large\n", dh->dccph_doff); + if (!pskb_may_pull(skb, dccph_doff * sizeof(u32))) { + DCCP_WARN("P.Data Offset(%u) too large\n", dccph_doff); return 1; } - + dh = dccp_hdr(skb); /* * If P.type is not Data, Ack, or DataAck and P.X == 0 (the packet * has short sequence numbers), drop packet and return diff --git a/net/dsa/dsa2.c b/net/dsa/dsa2.c index f30bad967..3bdecd2f9 100644 --- a/net/dsa/dsa2.c +++ b/net/dsa/dsa2.c @@ -28,8 +28,10 @@ static struct dsa_switch_tree *dsa_get_dst(u32 tree) struct dsa_switch_tree *dst; list_for_each_entry(dst, &dsa_switch_trees, list) - if (dst->tree == tree) + if (dst->tree == tree) { + kref_get(&dst->refcount); return dst; + } return NULL; } diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index eebbc0f2b..ed22af67c 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -1237,7 +1237,7 @@ struct sk_buff *inet_gso_segment(struct sk_buff *skb, fixedid = !!(skb_shinfo(skb)->gso_type & SKB_GSO_TCP_FIXEDID); /* fixed ID is invalid if DF bit is not set */ - if (fixedid && !(iph->frag_off & htons(IP_DF))) + if (fixedid && !(ip_hdr(skb)->frag_off & htons(IP_DF))) goto out; } diff --git a/net/ipv4/esp4.c b/net/ipv4/esp4.c index d95631d09..20fb25e30 100644 --- a/net/ipv4/esp4.c +++ b/net/ipv4/esp4.c @@ -476,7 +476,7 @@ static int esp_input(struct xfrm_state *x, struct sk_buff *skb) esph = (void *)skb_push(skb, 4); *seqhi = esph->spi; esph->spi = esph->seq_no; - esph->seq_no = htonl(XFRM_SKB_CB(skb)->seq.input.hi); + esph->seq_no = XFRM_SKB_CB(skb)->seq.input.hi; aead_request_set_callback(req, 0, esp_input_done_esn, skb); } diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index 1b25daf8c..930130852 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -157,7 +157,7 @@ static void fib_replace_table(struct net *net, struct fib_table *old, int fib_unmerge(struct net *net) { - struct fib_table *old, *new; + struct fib_table *old, *new, *main_table; /* attempt to fetch local table if it has been allocated */ old = fib_get_table(net, RT_TABLE_LOCAL); @@ -168,11 +168,21 @@ int fib_unmerge(struct net *net) if (!new) return -ENOMEM; + /* table is already unmerged */ + if (new == old) + return 0; + /* replace merged table with clean table */ - if (new != old) { - fib_replace_table(net, old, new); - fib_free_table(old); - } + fib_replace_table(net, old, new); + fib_free_table(old); + + /* attempt to fetch main table if it has been allocated */ + main_table = fib_get_table(net, RT_TABLE_MAIN); + if (!main_table) + return 0; + + /* flush local entries from main table */ + fib_table_flush_external(main_table); return 0; } diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 7ef703102..84fd72727 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -681,6 +681,13 @@ static unsigned char update_suffix(struct key_vector *tn) { unsigned char slen = tn->pos; unsigned long stride, i; + unsigned char slen_max; + + /* only vector 0 can have a suffix length greater than or equal to + * tn->pos + tn->bits, the second highest node will have a suffix + * length at most of tn->pos + tn->bits - 1 + */ + slen_max = min_t(unsigned char, tn->pos + tn->bits - 1, tn->slen); /* search though the list of children looking for nodes that might * have a suffix greater than the one we currently have. This is @@ -698,12 +705,8 @@ static unsigned char update_suffix(struct key_vector *tn) slen = n->slen; i &= ~(stride - 1); - /* if slen covers all but the last bit we can stop here - * there will be nothing longer than that since only node - * 0 and 1 << (bits - 1) could have that as their suffix - * length. - */ - if ((slen + 1) >= (tn->pos + tn->bits)) + /* stop searching if we have hit the maximum possible value */ + if (slen >= slen_max) break; } @@ -875,39 +878,27 @@ static struct key_vector *resize(struct trie *t, struct key_vector *tn) return collapse(t, tn); /* update parent in case halve failed */ - tp = node_parent(tn); - - /* Return if at least one deflate was run */ - if (max_work != MAX_WORK) - return tp; - - /* push the suffix length to the parent node */ - if (tn->slen > tn->pos) { - unsigned char slen = update_suffix(tn); - - if (slen > tp->slen) - tp->slen = slen; - } - - return tp; + return node_parent(tn); } -static void leaf_pull_suffix(struct key_vector *tp, struct key_vector *l) +static void node_pull_suffix(struct key_vector *tn, unsigned char slen) { - while ((tp->slen > tp->pos) && (tp->slen > l->slen)) { - if (update_suffix(tp) > l->slen) + unsigned char node_slen = tn->slen; + + while ((node_slen > tn->pos) && (node_slen > slen)) { + slen = update_suffix(tn); + if (node_slen == slen) break; - tp = node_parent(tp); + + tn = node_parent(tn); + node_slen = tn->slen; } } -static void leaf_push_suffix(struct key_vector *tn, struct key_vector *l) +static void node_push_suffix(struct key_vector *tn, unsigned char slen) { - /* if this is a new leaf then tn will be NULL and we can sort - * out parent suffix lengths as a part of trie_rebalance - */ - while (tn->slen < l->slen) { - tn->slen = l->slen; + while (tn->slen < slen) { + tn->slen = slen; tn = node_parent(tn); } } @@ -1028,6 +1019,7 @@ static int fib_insert_node(struct trie *t, struct key_vector *tp, } /* Case 3: n is NULL, and will just insert a new leaf */ + node_push_suffix(tp, new->fa_slen); NODE_INIT_PARENT(l, tp); put_child_root(tp, key, l); trie_rebalance(t, tp); @@ -1069,7 +1061,7 @@ static int fib_insert_alias(struct trie *t, struct key_vector *tp, /* if we added to the tail node then we need to update slen */ if (l->slen < new->fa_slen) { l->slen = new->fa_slen; - leaf_push_suffix(tp, l); + node_push_suffix(tp, new->fa_slen); } return 0; @@ -1470,6 +1462,8 @@ static void fib_remove_alias(struct trie *t, struct key_vector *tp, * out parent suffix lengths as a part of trie_rebalance */ if (hlist_empty(&l->leaf)) { + if (tp->slen == l->slen) + node_pull_suffix(tp, tp->pos); put_child_root(tp, l->key, NULL); node_free(l); trie_rebalance(t, tp); @@ -1482,7 +1476,7 @@ static void fib_remove_alias(struct trie *t, struct key_vector *tp, /* update the trie with the latest suffix length */ l->slen = fa->fa_slen; - leaf_pull_suffix(tp, l); + node_pull_suffix(tp, fa->fa_slen); } /* Caller must hold RTNL. */ @@ -1713,8 +1707,10 @@ struct fib_table *fib_trie_unmerge(struct fib_table *oldtb) local_l = fib_find_node(lt, &local_tp, l->key); if (fib_insert_alias(lt, local_tp, local_l, new_fa, - NULL, l->key)) + NULL, l->key)) { + kmem_cache_free(fn_alias_kmem, new_fa); goto out; + } } /* stop loop if key wrapped back to 0 */ @@ -1751,6 +1747,10 @@ void fib_table_flush_external(struct fib_table *tb) if (IS_TRIE(pn)) break; + /* update the suffix to address pulled leaves */ + if (pn->slen > pn->pos) + update_suffix(pn); + /* resize completed node */ pn = resize(t, pn); cindex = get_index(pkey, pn); @@ -1826,6 +1826,10 @@ int fib_table_flush(struct fib_table *tb) if (IS_TRIE(pn)) break; + /* update the suffix to address pulled leaves */ + if (pn->slen > pn->pos) + update_suffix(pn); + /* resize completed node */ pn = resize(t, pn); cindex = get_index(pkey, pn); diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index 307daed9a..f4790c30c 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -98,6 +98,9 @@ int __ip_local_out(struct net *net, struct sock *sk, struct sk_buff *skb) iph->tot_len = htons(skb->len); ip_send_check(iph); + + skb->protocol = htons(ETH_P_IP); + return nf_hook(NFPROTO_IPV4, NF_INET_LOCAL_OUT, net, sk, skb, NULL, skb_dst(skb)->dev, dst_output); diff --git a/net/ipv4/ping.c b/net/ipv4/ping.c index 66ddcb605..dcdd5aed7 100644 --- a/net/ipv4/ping.c +++ b/net/ipv4/ping.c @@ -662,6 +662,10 @@ int ping_common_sendmsg(int family, struct msghdr *msg, size_t len, if (len > 0xFFFF) return -EMSGSIZE; + /* Must have at least a full ICMP header. */ + if (len < icmph_len) + return -EINVAL; + /* * Check the flags. */ diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index c0d71e7d6..a2d54f5b0 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1451,7 +1451,7 @@ static void udp_v4_rehash(struct sock *sk) udp_lib_rehash(sk, new_hash); } -static int __udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) +int __udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) { int rc; diff --git a/net/ipv4/udp_impl.h b/net/ipv4/udp_impl.h index 7e0fe4bdd..feb50a163 100644 --- a/net/ipv4/udp_impl.h +++ b/net/ipv4/udp_impl.h @@ -25,7 +25,7 @@ int udp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock, int flags, int *addr_len); int udp_sendpage(struct sock *sk, struct page *page, int offset, size_t size, int flags); -int udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); +int __udp_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); void udp_destroy_sock(struct sock *sk); #ifdef CONFIG_PROC_FS diff --git a/net/ipv4/udplite.c b/net/ipv4/udplite.c index 2eea073e2..705d9fbf0 100644 --- a/net/ipv4/udplite.c +++ b/net/ipv4/udplite.c @@ -50,7 +50,7 @@ struct proto udplite_prot = { .sendmsg = udp_sendmsg, .recvmsg = udp_recvmsg, .sendpage = udp_sendpage, - .backlog_rcv = udp_queue_rcv_skb, + .backlog_rcv = __udp_queue_rcv_skb, .hash = udp_lib_hash, .unhash = udp_lib_unhash, .get_port = udp_v4_get_port, diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index f5432d65e..8f2e36f8a 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -163,7 +163,7 @@ 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); +static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id); static void addrconf_dad_run(struct inet6_dev *idev); static void addrconf_rs_timer(unsigned long data); static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifa); @@ -2893,6 +2893,7 @@ static void add_addr(struct inet6_dev *idev, const struct in6_addr *addr, spin_lock_bh(&ifp->lock); ifp->flags &= ~IFA_F_TENTATIVE; spin_unlock_bh(&ifp->lock); + rt_genid_bump_ipv6(dev_net(idev->dev)); ipv6_ifa_notify(RTM_NEWADDR, ifp); in6_ifa_put(ifp); } @@ -3736,7 +3737,7 @@ static void addrconf_dad_begin(struct inet6_ifaddr *ifp) { struct inet6_dev *idev = ifp->idev; struct net_device *dev = idev->dev; - bool notify = false; + bool bump_id, notify = false; addrconf_join_solict(dev, &ifp->addr); @@ -3751,11 +3752,12 @@ static void addrconf_dad_begin(struct inet6_ifaddr *ifp) idev->cnf.accept_dad < 1 || !(ifp->flags&IFA_F_TENTATIVE) || ifp->flags & IFA_F_NODAD) { + 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); + addrconf_dad_completed(ifp, bump_id); return; } @@ -3815,8 +3817,8 @@ static void addrconf_dad_work(struct work_struct *w) struct inet6_ifaddr, dad_work); struct inet6_dev *idev = ifp->idev; + bool bump_id, disable_ipv6 = false; struct in6_addr mcaddr; - bool disable_ipv6 = false; enum { DAD_PROCESS, @@ -3886,11 +3888,12 @@ static void addrconf_dad_work(struct work_struct *w) * DAD was successful */ + 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); + addrconf_dad_completed(ifp, bump_id); goto out; } @@ -3927,7 +3930,7 @@ static bool ipv6_lonely_lladdr(struct inet6_ifaddr *ifp) return true; } -static void addrconf_dad_completed(struct inet6_ifaddr *ifp) +static void addrconf_dad_completed(struct inet6_ifaddr *ifp, bool bump_id) { struct net_device *dev = ifp->idev->dev; struct in6_addr lladdr; @@ -3978,6 +3981,9 @@ static void addrconf_dad_completed(struct inet6_ifaddr *ifp) spin_unlock(&ifp->lock); write_unlock_bh(&ifp->idev->lock); } + + if (bump_id) + rt_genid_bump_ipv6(dev_net(dev)); } static void addrconf_dad_run(struct inet6_dev *idev) diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c index 060a60b2f..111ba55fd 100644 --- a/net/ipv6/esp6.c +++ b/net/ipv6/esp6.c @@ -418,7 +418,7 @@ static int esp6_input(struct xfrm_state *x, struct sk_buff *skb) esph = (void *)skb_push(skb, 4); *seqhi = esph->spi; esph->spi = esph->seq_no; - esph->seq_no = htonl(XFRM_SKB_CB(skb)->seq.input.hi); + esph->seq_no = XFRM_SKB_CB(skb)->seq.input.hi; aead_request_set_callback(req, 0, esp_input_done_esn, skb); } diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 7370ad2e6..2772004ba 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -447,8 +447,10 @@ static void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info, if (__ipv6_addr_needs_scope_id(addr_type)) iif = skb->dev->ifindex; - else - iif = l3mdev_master_ifindex(skb_dst(skb)->dev); + else { + dst = skb_dst(skb); + iif = l3mdev_master_ifindex(dst ? dst->dev : skb->dev); + } /* * Must not send error if the source does not uniquely diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c index a09418bda..93294cf45 100644 --- a/net/ipv6/ip6_offload.c +++ b/net/ipv6/ip6_offload.c @@ -98,7 +98,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb, segs = ops->callbacks.gso_segment(skb, features); } - if (IS_ERR(segs)) + if (IS_ERR_OR_NULL(segs)) goto out; for (skb = segs; skb; skb = skb->next) { diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c index 41489f39c..da4e7b377 100644 --- a/net/ipv6/ip6_tunnel.c +++ b/net/ipv6/ip6_tunnel.c @@ -1014,6 +1014,7 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield, int mtu; unsigned int psh_hlen = sizeof(struct ipv6hdr) + t->encap_hlen; unsigned int max_headroom = psh_hlen; + bool use_cache = false; int err = -1; /* NBMA tunnel */ @@ -1038,7 +1039,15 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield, memcpy(&fl6->daddr, addr6, sizeof(fl6->daddr)); neigh_release(neigh); - } else if (!fl6->flowi6_mark) + } else if (!(t->parms.flags & + (IP6_TNL_F_USE_ORIG_TCLASS | IP6_TNL_F_USE_ORIG_FWMARK))) { + /* enable the cache only only if the routing decision does + * not depend on the current inner header value + */ + use_cache = true; + } + + if (use_cache) dst = dst_cache_get(&t->dst_cache); if (!ip6_tnl_xmit_ctl(t, &fl6->saddr, &fl6->daddr)) @@ -1113,7 +1122,7 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield, skb = new_skb; } - if (!fl6->flowi6_mark && ndst) + if (use_cache && ndst) dst_cache_set_ip6(&t->dst_cache, ndst, &fl6->saddr); skb_dst_set(skb, dst); @@ -1134,7 +1143,6 @@ int ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev, __u8 dsfield, if (err) return err; - skb->protocol = htons(ETH_P_IPV6); skb_push(skb, sizeof(struct ipv6hdr)); skb_reset_network_header(skb); ipv6h = ipv6_hdr(skb); diff --git a/net/ipv6/output_core.c b/net/ipv6/output_core.c index 462f2a76b..1d184322a 100644 --- a/net/ipv6/output_core.c +++ b/net/ipv6/output_core.c @@ -148,6 +148,8 @@ int __ip6_local_out(struct net *net, struct sock *sk, struct sk_buff *skb) ipv6_hdr(skb)->payload_len = htons(len); IP6CB(skb)->nhoff = offsetof(struct ipv6hdr, nexthdr); + skb->protocol = htons(ETH_P_IPV6); + return nf_hook(NFPROTO_IPV6, NF_INET_LOCAL_OUT, net, sk, skb, NULL, skb_dst(skb)->dev, dst_output); diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c index c2a8656c2..fa39ab8ec 100644 --- a/net/ipv6/udp.c +++ b/net/ipv6/udp.c @@ -514,7 +514,7 @@ out: return; } -static int __udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) +int __udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb) { int rc; diff --git a/net/ipv6/udp_impl.h b/net/ipv6/udp_impl.h index 0682c031c..3c1dbc9f7 100644 --- a/net/ipv6/udp_impl.h +++ b/net/ipv6/udp_impl.h @@ -26,7 +26,7 @@ int compat_udpv6_getsockopt(struct sock *sk, int level, int optname, int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len); int udpv6_recvmsg(struct sock *sk, struct msghdr *msg, size_t len, int noblock, int flags, int *addr_len); -int udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); +int __udpv6_queue_rcv_skb(struct sock *sk, struct sk_buff *skb); void udpv6_destroy_sock(struct sock *sk); void udp_v6_clear_sk(struct sock *sk, int size); diff --git a/net/ipv6/udplite.c b/net/ipv6/udplite.c index fd6ef4148..af2895c77 100644 --- a/net/ipv6/udplite.c +++ b/net/ipv6/udplite.c @@ -45,7 +45,7 @@ struct proto udplitev6_prot = { .getsockopt = udpv6_getsockopt, .sendmsg = udpv6_sendmsg, .recvmsg = udpv6_recvmsg, - .backlog_rcv = udpv6_queue_rcv_skb, + .backlog_rcv = __udpv6_queue_rcv_skb, .hash = udp_lib_hash, .unhash = udp_lib_unhash, .get_port = udp_v6_get_port, diff --git a/net/l2tp/l2tp_ip.c b/net/l2tp/l2tp_ip.c index 42de4ccd1..d0e906d39 100644 --- a/net/l2tp/l2tp_ip.c +++ b/net/l2tp/l2tp_ip.c @@ -251,8 +251,6 @@ static int l2tp_ip_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) int ret; int chk_addr_ret; - if (!sock_flag(sk, SOCK_ZAPPED)) - return -EINVAL; if (addr_len < sizeof(struct sockaddr_l2tpip)) return -EINVAL; if (addr->l2tp_family != AF_INET) @@ -267,6 +265,9 @@ static int l2tp_ip_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) read_unlock_bh(&l2tp_ip_lock); lock_sock(sk); + if (!sock_flag(sk, SOCK_ZAPPED)) + goto out; + if (sk->sk_state != TCP_CLOSE || addr_len < sizeof(struct sockaddr_l2tpip)) goto out; diff --git a/net/l2tp/l2tp_ip6.c b/net/l2tp/l2tp_ip6.c index ea2ae6664..b9c6a412b 100644 --- a/net/l2tp/l2tp_ip6.c +++ b/net/l2tp/l2tp_ip6.c @@ -269,8 +269,6 @@ static int l2tp_ip6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) int addr_type; int err; - if (!sock_flag(sk, SOCK_ZAPPED)) - return -EINVAL; if (addr->l2tp_family != AF_INET6) return -EINVAL; if (addr_len < sizeof(*addr)) @@ -296,6 +294,9 @@ static int l2tp_ip6_bind(struct sock *sk, struct sockaddr *uaddr, int addr_len) lock_sock(sk); err = -EINVAL; + if (!sock_flag(sk, SOCK_ZAPPED)) + goto out_unlock; + if (sk->sk_state != TCP_CLOSE) goto out_unlock; diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c index 62bea4591..246f29d36 100644 --- a/net/netlink/af_netlink.c +++ b/net/netlink/af_netlink.c @@ -329,7 +329,6 @@ static void netlink_sock_destruct(struct sock *sk) if (nlk->cb_running) { if (nlk->cb.done) nlk->cb.done(&nlk->cb); - module_put(nlk->cb.module); kfree_skb(nlk->cb.skb); } @@ -346,6 +345,14 @@ static void netlink_sock_destruct(struct sock *sk) WARN_ON(nlk_sk(sk)->groups); } +static void netlink_sock_destruct_work(struct work_struct *work) +{ + struct netlink_sock *nlk = container_of(work, struct netlink_sock, + work); + + sk_free(&nlk->sk); +} + /* This lock without WQ_FLAG_EXCLUSIVE is good on UP and it is _very_ bad on * SMP. Look, when several writers sleep and reader wakes them up, all but one * immediately hit write lock and grab all the cpus. Exclusive sleep solves @@ -648,8 +655,18 @@ out_module: static void deferred_put_nlk_sk(struct rcu_head *head) { struct netlink_sock *nlk = container_of(head, struct netlink_sock, rcu); + struct sock *sk = &nlk->sk; + + if (!atomic_dec_and_test(&sk->sk_refcnt)) + return; + + if (nlk->cb_running && nlk->cb.done) { + INIT_WORK(&nlk->work, netlink_sock_destruct_work); + schedule_work(&nlk->work); + return; + } - sock_put(&nlk->sk); + sk_free(sk); } static int netlink_release(struct socket *sock) diff --git a/net/netlink/af_netlink.h b/net/netlink/af_netlink.h index 3cfd6cc60..4fdb38318 100644 --- a/net/netlink/af_netlink.h +++ b/net/netlink/af_netlink.h @@ -3,6 +3,7 @@ #include #include +#include #include #define NLGRPSZ(x) (ALIGN(x, sizeof(unsigned long) * 8) / 8) @@ -33,6 +34,7 @@ struct netlink_sock { struct rhash_head node; struct rcu_head rcu; + struct work_struct work; }; static inline struct netlink_sock *nlk_sk(struct sock *sk) diff --git a/net/sched/act_pedit.c b/net/sched/act_pedit.c index b54d56d49..cf9b2fe8e 100644 --- a/net/sched/act_pedit.c +++ b/net/sched/act_pedit.c @@ -108,6 +108,17 @@ static void tcf_pedit_cleanup(struct tc_action *a, int bind) kfree(keys); } +static bool offset_valid(struct sk_buff *skb, int offset) +{ + if (offset > 0 && offset > skb->len) + return false; + + if (offset < 0 && -offset > skb_headroom(skb)) + return false; + + return true; +} + static int tcf_pedit(struct sk_buff *skb, const struct tc_action *a, struct tcf_result *res) { @@ -134,6 +145,11 @@ static int tcf_pedit(struct sk_buff *skb, const struct tc_action *a, if (tkey->offmask) { char *d, _d; + if (!offset_valid(skb, off + tkey->at)) { + pr_info("tc filter pedit 'at' offset %d out of bounds\n", + off + tkey->at); + goto bad; + } d = skb_header_pointer(skb, off + tkey->at, 1, &_d); if (!d) @@ -146,10 +162,10 @@ static int tcf_pedit(struct sk_buff *skb, const struct tc_action *a, " offset must be on 32 bit boundaries\n"); goto bad; } - if (offset > 0 && offset > skb->len) { - pr_info("tc filter pedit" - " offset %d can't exceed pkt length %d\n", - offset, skb->len); + + if (!offset_valid(skb, off + offset)) { + pr_info("tc filter pedit offset %d out of bounds\n", + offset); goto bad; } diff --git a/net/sched/cls_basic.c b/net/sched/cls_basic.c index 0b8c3ace6..1bf1f4517 100644 --- a/net/sched/cls_basic.c +++ b/net/sched/cls_basic.c @@ -62,9 +62,6 @@ static unsigned long basic_get(struct tcf_proto *tp, u32 handle) struct basic_head *head = rtnl_dereference(tp->root); struct basic_filter *f; - if (head == NULL) - return 0UL; - list_for_each_entry(f, &head->flist, link) { if (f->handle == handle) { l = (unsigned long) f; @@ -109,7 +106,6 @@ static bool basic_destroy(struct tcf_proto *tp, bool force) tcf_unbind_filter(tp, &f->res); call_rcu(&f->rcu, basic_delete_filter); } - RCU_INIT_POINTER(tp->root, NULL); kfree_rcu(head, rcu); return true; } diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c index c3002c2c6..dbec45848 100644 --- a/net/sched/cls_bpf.c +++ b/net/sched/cls_bpf.c @@ -200,7 +200,6 @@ static bool cls_bpf_destroy(struct tcf_proto *tp, bool force) call_rcu(&prog->rcu, __cls_bpf_delete_prog); } - RCU_INIT_POINTER(tp->root, NULL); kfree_rcu(head, rcu); return true; } @@ -211,9 +210,6 @@ static unsigned long cls_bpf_get(struct tcf_proto *tp, u32 handle) struct cls_bpf_prog *prog; unsigned long ret = 0UL; - if (head == NULL) - return 0UL; - list_for_each_entry(prog, &head->plist, link) { if (prog->handle == handle) { ret = (unsigned long) prog; diff --git a/net/sched/cls_cgroup.c b/net/sched/cls_cgroup.c index 4c85bd3a7..c104c2019 100644 --- a/net/sched/cls_cgroup.c +++ b/net/sched/cls_cgroup.c @@ -130,11 +130,10 @@ static bool cls_cgroup_destroy(struct tcf_proto *tp, bool force) if (!force) return false; - - if (head) { - RCU_INIT_POINTER(tp->root, NULL); + /* Head can still be NULL due to cls_cgroup_init(). */ + if (head) call_rcu(&head->rcu, cls_cgroup_destroy_rcu); - } + return true; } diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c index fbfec6a18..d7ba2b4ff 100644 --- a/net/sched/cls_flow.c +++ b/net/sched/cls_flow.c @@ -583,7 +583,6 @@ static bool flow_destroy(struct tcf_proto *tp, bool force) list_del_rcu(&f->list); call_rcu(&f->rcu, flow_destroy_filter); } - RCU_INIT_POINTER(tp->root, NULL); kfree_rcu(head, rcu); return true; } diff --git a/net/sched/cls_flower.c b/net/sched/cls_flower.c index 5060801a2..a411571c4 100644 --- a/net/sched/cls_flower.c +++ b/net/sched/cls_flower.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include @@ -55,7 +56,10 @@ struct cls_fl_head { bool mask_assigned; struct list_head filters; struct rhashtable_params ht_params; - struct rcu_head rcu; + union { + struct work_struct work; + struct rcu_head rcu; + }; }; struct cls_fl_filter { @@ -239,6 +243,24 @@ static void fl_hw_update_stats(struct tcf_proto *tp, struct cls_fl_filter *f) dev->netdev_ops->ndo_setup_tc(dev, tp->q->handle, tp->protocol, &tc); } +static void fl_destroy_sleepable(struct work_struct *work) +{ + struct cls_fl_head *head = container_of(work, struct cls_fl_head, + work); + if (head->mask_assigned) + rhashtable_destroy(&head->ht); + kfree(head); + module_put(THIS_MODULE); +} + +static void fl_destroy_rcu(struct rcu_head *rcu) +{ + struct cls_fl_head *head = container_of(rcu, struct cls_fl_head, rcu); + + INIT_WORK(&head->work, fl_destroy_sleepable); + schedule_work(&head->work); +} + static bool fl_destroy(struct tcf_proto *tp, bool force) { struct cls_fl_head *head = rtnl_dereference(tp->root); @@ -252,10 +274,9 @@ static bool fl_destroy(struct tcf_proto *tp, bool force) list_del_rcu(&f->list); call_rcu(&f->rcu, fl_destroy_filter); } - RCU_INIT_POINTER(tp->root, NULL); - if (head->mask_assigned) - rhashtable_destroy(&head->ht); - kfree_rcu(head, rcu); + + __module_get(THIS_MODULE); + call_rcu(&head->rcu, fl_destroy_rcu); return true; } diff --git a/net/sched/cls_matchall.c b/net/sched/cls_matchall.c index 25927b6c4..f935429bd 100644 --- a/net/sched/cls_matchall.c +++ b/net/sched/cls_matchall.c @@ -114,7 +114,6 @@ static bool mall_destroy(struct tcf_proto *tp, bool force) call_rcu(&f->rcu, mall_destroy_filter); } - RCU_INIT_POINTER(tp->root, NULL); kfree_rcu(head, rcu); return true; } diff --git a/net/sched/cls_rsvp.h b/net/sched/cls_rsvp.h index f9c9fc075..9992dfac6 100644 --- a/net/sched/cls_rsvp.h +++ b/net/sched/cls_rsvp.h @@ -152,7 +152,8 @@ static int rsvp_classify(struct sk_buff *skb, const struct tcf_proto *tp, return -1; nhptr = ip_hdr(skb); #endif - + if (unlikely(!head)) + return -1; restart: #if RSVP_DST_LEN == 4 diff --git a/net/sched/cls_tcindex.c b/net/sched/cls_tcindex.c index 944c8ff45..403746b20 100644 --- a/net/sched/cls_tcindex.c +++ b/net/sched/cls_tcindex.c @@ -503,7 +503,6 @@ static bool tcindex_destroy(struct tcf_proto *tp, bool force) walker.fn = tcindex_destroy_element; tcindex_walk(tp, &walker); - RCU_INIT_POINTER(tp->root, NULL); call_rcu(&p->rcu, __tcindex_destroy); return true; } diff --git a/net/tipc/bearer.c b/net/tipc/bearer.c index 65b1bbf13..616769983 100644 --- a/net/tipc/bearer.c +++ b/net/tipc/bearer.c @@ -402,6 +402,10 @@ int tipc_enable_l2_media(struct net *net, struct tipc_bearer *b, dev = dev_get_by_name(net, driver_name); if (!dev) return -ENODEV; + if (tipc_mtu_bad(dev, 0)) { + dev_put(dev); + return -EINVAL; + } /* Associate TIPC bearer with L2 bearer */ rcu_assign_pointer(b->media_ptr, dev); @@ -606,8 +610,6 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt, if (!b) return NOTIFY_DONE; - b->mtu = dev->mtu; - switch (evt) { case NETDEV_CHANGE: if (netif_carrier_ok(dev)) @@ -621,6 +623,11 @@ static int tipc_l2_device_event(struct notifier_block *nb, unsigned long evt, tipc_reset_bearer(net, b); break; case NETDEV_CHANGEMTU: + if (tipc_mtu_bad(dev, 0)) { + bearer_disable(net, b); + break; + } + b->mtu = dev->mtu; tipc_reset_bearer(net, b); break; case NETDEV_CHANGEADDR: diff --git a/net/tipc/bearer.h b/net/tipc/bearer.h index 43757f1f9..d93f1f1a2 100644 --- a/net/tipc/bearer.h +++ b/net/tipc/bearer.h @@ -39,6 +39,7 @@ #include "netlink.h" #include "core.h" +#include "msg.h" #include #define MAX_MEDIA 3 @@ -59,6 +60,9 @@ #define TIPC_MEDIA_TYPE_IB 2 #define TIPC_MEDIA_TYPE_UDP 3 +/* minimum bearer MTU */ +#define TIPC_MIN_BEARER_MTU (MAX_H_SIZE + INT_H_SIZE) + /** * struct tipc_media_addr - destination address used by TIPC bearers * @value: address info (format defined by media) @@ -213,4 +217,13 @@ void tipc_bearer_xmit(struct net *net, u32 bearer_id, void tipc_bearer_bc_xmit(struct net *net, u32 bearer_id, struct sk_buff_head *xmitq); +/* check if device MTU is too low for tipc headers */ +static inline bool tipc_mtu_bad(struct net_device *dev, unsigned int reserve) +{ + if (dev->mtu >= TIPC_MIN_BEARER_MTU + reserve) + return false; + netdev_warn(dev, "MTU too low for tipc bearer\n"); + return true; +} + #endif /* _TIPC_BEARER_H */ diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c index ae7e14cae..f60f346e7 100644 --- a/net/tipc/udp_media.c +++ b/net/tipc/udp_media.c @@ -372,6 +372,11 @@ static int tipc_udp_enable(struct net *net, struct tipc_bearer *b, udp_conf.local_ip.s_addr = htonl(INADDR_ANY); udp_conf.use_udp_checksums = false; ub->ifindex = dev->ifindex; + if (tipc_mtu_bad(dev, sizeof(struct iphdr) + + sizeof(struct udphdr))) { + err = -EINVAL; + goto err; + } b->mtu = dev->mtu - sizeof(struct iphdr) - sizeof(struct udphdr); #if IS_ENABLED(CONFIG_IPV6) diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 8309687a5..568f307af 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -2199,7 +2199,8 @@ out: * Sleep until more data has arrived. But check for races.. */ static long unix_stream_data_wait(struct sock *sk, long timeo, - struct sk_buff *last, unsigned int last_len) + struct sk_buff *last, unsigned int last_len, + bool freezable) { struct sk_buff *tail; DEFINE_WAIT(wait); @@ -2220,7 +2221,10 @@ static long unix_stream_data_wait(struct sock *sk, long timeo, sk_set_bit(SOCKWQ_ASYNC_WAITDATA, sk); unix_state_unlock(sk); - timeo = freezable_schedule_timeout(timeo); + if (freezable) + timeo = freezable_schedule_timeout(timeo); + else + timeo = schedule_timeout(timeo); unix_state_lock(sk); if (sock_flag(sk, SOCK_DEAD)) @@ -2250,7 +2254,8 @@ struct unix_stream_read_state { unsigned int splice_flags; }; -static int unix_stream_read_generic(struct unix_stream_read_state *state) +static int unix_stream_read_generic(struct unix_stream_read_state *state, + bool freezable) { struct scm_cookie scm; struct socket *sock = state->socket; @@ -2330,7 +2335,7 @@ again: mutex_unlock(&u->iolock); timeo = unix_stream_data_wait(sk, timeo, last, - last_len); + last_len, freezable); if (signal_pending(current)) { err = sock_intr_errno(timeo); @@ -2472,7 +2477,7 @@ static int unix_stream_recvmsg(struct socket *sock, struct msghdr *msg, .flags = flags }; - return unix_stream_read_generic(&state); + return unix_stream_read_generic(&state, true); } static ssize_t skb_unix_socket_splice(struct sock *sk, @@ -2518,7 +2523,7 @@ static ssize_t unix_stream_splice_read(struct socket *sock, loff_t *ppos, flags & SPLICE_F_NONBLOCK) state.flags = MSG_DONTWAIT; - return unix_stream_read_generic(&state); + return unix_stream_read_generic(&state, false); } static int unix_shutdown(struct socket *sock, int mode) -- cgit v1.2.3-54-g00ecf