diff options
Diffstat (limited to 'net')
32 files changed, 350 insertions, 202 deletions
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c index b992ba12aa247..d4f4e97a27f10 100644 --- a/net/batman-adv/bridge_loop_avoidance.c +++ b/net/batman-adv/bridge_loop_avoidance.c @@ -2165,6 +2165,7 @@ batadv_bla_claim_dump_entry(struct sk_buff *msg, u32 portid, struct batadv_bla_claim *claim) { const u8 *primary_addr = primary_if->net_dev->dev_addr; + struct batadv_bla_backbone_gw *backbone_gw; u16 backbone_crc; bool is_own; void *hdr; @@ -2180,32 +2181,35 @@ batadv_bla_claim_dump_entry(struct sk_buff *msg, u32 portid, genl_dump_check_consistent(cb, hdr); - is_own = batadv_compare_eth(claim->backbone_gw->orig, - primary_addr); + backbone_gw = batadv_bla_claim_get_backbone_gw(claim); + + is_own = batadv_compare_eth(backbone_gw->orig, primary_addr); - spin_lock_bh(&claim->backbone_gw->crc_lock); - backbone_crc = claim->backbone_gw->crc; - spin_unlock_bh(&claim->backbone_gw->crc_lock); + spin_lock_bh(&backbone_gw->crc_lock); + backbone_crc = backbone_gw->crc; + spin_unlock_bh(&backbone_gw->crc_lock); if (is_own) if (nla_put_flag(msg, BATADV_ATTR_BLA_OWN)) { genlmsg_cancel(msg, hdr); - goto out; + goto put_backbone_gw; } if (nla_put(msg, BATADV_ATTR_BLA_ADDRESS, ETH_ALEN, claim->addr) || nla_put_u16(msg, BATADV_ATTR_BLA_VID, claim->vid) || nla_put(msg, BATADV_ATTR_BLA_BACKBONE, ETH_ALEN, - claim->backbone_gw->orig) || + backbone_gw->orig) || nla_put_u16(msg, BATADV_ATTR_BLA_CRC, backbone_crc)) { genlmsg_cancel(msg, hdr); - goto out; + goto put_backbone_gw; } genlmsg_end(msg, hdr); ret = 0; +put_backbone_gw: + batadv_backbone_gw_put(backbone_gw); out: return ret; } @@ -2483,6 +2487,7 @@ out: bool batadv_bla_check_claim(struct batadv_priv *bat_priv, u8 *addr, unsigned short vid) { + struct batadv_bla_backbone_gw *backbone_gw; struct batadv_bla_claim search_claim; struct batadv_bla_claim *claim = NULL; struct batadv_hard_iface *primary_if = NULL; @@ -2505,9 +2510,13 @@ bool batadv_bla_check_claim(struct batadv_priv *bat_priv, * return false. */ if (claim) { - if (!batadv_compare_eth(claim->backbone_gw->orig, + backbone_gw = batadv_bla_claim_get_backbone_gw(claim); + + if (!batadv_compare_eth(backbone_gw->orig, primary_if->net_dev->dev_addr)) ret = false; + + batadv_backbone_gw_put(backbone_gw); batadv_claim_put(claim); } diff --git a/net/batman-adv/translation-table.c b/net/batman-adv/translation-table.c index 6e95e883c2bf0..05cddcf994f65 100644 --- a/net/batman-adv/translation-table.c +++ b/net/batman-adv/translation-table.c @@ -798,8 +798,8 @@ batadv_tt_prepare_tvlv_global_data(struct batadv_orig_node *orig_node, { u16 num_vlan = 0; u16 num_entries = 0; - u16 change_offset; - u16 tvlv_len; + u16 tvlv_len = 0; + unsigned int change_offset; struct batadv_tvlv_tt_vlan_data *tt_vlan; struct batadv_orig_node_vlan *vlan; u8 *tt_change_ptr; @@ -816,6 +816,11 @@ batadv_tt_prepare_tvlv_global_data(struct batadv_orig_node *orig_node, if (*tt_len < 0) *tt_len = batadv_tt_len(num_entries); + if (change_offset > U16_MAX || *tt_len > U16_MAX - change_offset) { + *tt_len = 0; + goto out; + } + tvlv_len = *tt_len; tvlv_len += change_offset; diff --git a/net/core/skbuff.c b/net/core/skbuff.c index 60d89899fdb9b..a4695882d1c4c 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -1042,10 +1042,7 @@ static int skb_pp_frag_ref(struct sk_buff *skb) static void skb_kfree_head(void *head, unsigned int end_offset) { - if (end_offset == SKB_SMALL_HEAD_HEADROOM) - kmem_cache_free(net_hotdata.skb_small_head_cache, head); - else - kfree(head); + kfree(head); } static void skb_free_head(struct sk_buff *skb) diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c index f28cfd88eaf59..c2eac844bcdb4 100644 --- a/net/ipv4/xfrm4_input.c +++ b/net/ipv4/xfrm4_input.c @@ -50,6 +50,7 @@ int xfrm4_transport_finish(struct sk_buff *skb, int async) { struct xfrm_offload *xo = xfrm_offload(skb); struct iphdr *iph = ip_hdr(skb); + struct net_device *dev = skb->dev; iph->protocol = XFRM_MODE_SKB_CB(skb)->protocol; @@ -73,8 +74,10 @@ int xfrm4_transport_finish(struct sk_buff *skb, int async) } NF_HOOK(NFPROTO_IPV4, NF_INET_PRE_ROUTING, - dev_net(skb->dev), NULL, skb, skb->dev, NULL, + dev_net(dev), NULL, skb, dev, NULL, xfrm4_rcv_encap_finish); + if (async) + dev_put(dev); return 0; } diff --git a/net/ipv6/seg6_iptunnel.c b/net/ipv6/seg6_iptunnel.c index 3e1b9991131a2..d6a0f7df90807 100644 --- a/net/ipv6/seg6_iptunnel.c +++ b/net/ipv6/seg6_iptunnel.c @@ -48,7 +48,8 @@ static size_t seg6_lwt_headroom(struct seg6_iptunnel_encap *tuninfo) } struct seg6_lwt { - struct dst_cache cache; + struct dst_cache cache_input; + struct dst_cache cache_output; struct seg6_iptunnel_encap tuninfo[]; }; @@ -488,7 +489,7 @@ static int seg6_input_core(struct net *net, struct sock *sk, slwt = seg6_lwt_lwtunnel(lwtst); local_bh_disable(); - dst = dst_cache_get(&slwt->cache); + dst = dst_cache_get(&slwt->cache_input); local_bh_enable(); err = seg6_do_srh(skb, dst); @@ -504,7 +505,7 @@ static int seg6_input_core(struct net *net, struct sock *sk, /* cache only if we don't create a dst reference loop */ if (!dst->error && lwtst != dst->lwtstate) { local_bh_disable(); - dst_cache_set_ip6(&slwt->cache, dst, + dst_cache_set_ip6(&slwt->cache_input, dst, &ipv6_hdr(skb)->saddr); local_bh_enable(); } @@ -564,7 +565,7 @@ static int seg6_output_core(struct net *net, struct sock *sk, slwt = seg6_lwt_lwtunnel(orig_dst->lwtstate); local_bh_disable(); - dst = dst_cache_get(&slwt->cache); + dst = dst_cache_get(&slwt->cache_output); local_bh_enable(); err = seg6_do_srh(skb, dst); @@ -591,7 +592,7 @@ static int seg6_output_core(struct net *net, struct sock *sk, /* cache only if we don't create a dst reference loop */ if (orig_dst->lwtstate != dst->lwtstate) { local_bh_disable(); - dst_cache_set_ip6(&slwt->cache, dst, &fl6.saddr); + dst_cache_set_ip6(&slwt->cache_output, dst, &fl6.saddr); local_bh_enable(); } @@ -701,11 +702,13 @@ static int seg6_build_state(struct net *net, struct nlattr *nla, slwt = seg6_lwt_lwtunnel(newts); - err = dst_cache_init(&slwt->cache, GFP_ATOMIC); - if (err) { - kfree(newts); - return err; - } + err = dst_cache_init(&slwt->cache_input, GFP_ATOMIC); + if (err) + goto err_free_newts; + + err = dst_cache_init(&slwt->cache_output, GFP_ATOMIC); + if (err) + goto err_destroy_input; memcpy(&slwt->tuninfo, tuninfo, tuninfo_len); @@ -720,11 +723,20 @@ static int seg6_build_state(struct net *net, struct nlattr *nla, *ts = newts; return 0; + +err_destroy_input: + dst_cache_destroy(&slwt->cache_input); +err_free_newts: + kfree(newts); + return err; } static void seg6_destroy_state(struct lwtunnel_state *lwt) { - dst_cache_destroy(&seg6_lwt_lwtunnel(lwt)->cache); + struct seg6_lwt *slwt = seg6_lwt_lwtunnel(lwt); + + dst_cache_destroy(&slwt->cache_input); + dst_cache_destroy(&slwt->cache_output); } static int seg6_fill_encap_info(struct sk_buff *skb, diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c index 9005fc156a20e..699a001ac1662 100644 --- a/net/ipv6/xfrm6_input.c +++ b/net/ipv6/xfrm6_input.c @@ -43,6 +43,7 @@ static int xfrm6_transport_finish2(struct net *net, struct sock *sk, int xfrm6_transport_finish(struct sk_buff *skb, int async) { struct xfrm_offload *xo = xfrm_offload(skb); + struct net_device *dev = skb->dev; int nhlen = -skb_network_offset(skb); skb_network_header(skb)[IP6CB(skb)->nhoff] = @@ -68,8 +69,10 @@ int xfrm6_transport_finish(struct sk_buff *skb, int async) } NF_HOOK(NFPROTO_IPV6, NF_INET_PRE_ROUTING, - dev_net(skb->dev), NULL, skb, skb->dev, NULL, + dev_net(dev), NULL, skb, dev, NULL, xfrm6_transport_finish2); + if (async) + dev_put(dev); return 0; } diff --git a/net/mptcp/pm_kernel.c b/net/mptcp/pm_kernel.c index 52d15df12f588..4494cf4c38282 100644 --- a/net/mptcp/pm_kernel.c +++ b/net/mptcp/pm_kernel.c @@ -710,7 +710,7 @@ static void __mptcp_pm_release_addr_entry(struct mptcp_pm_addr_entry *entry) static int mptcp_pm_nl_append_new_local_addr(struct pm_nl_pernet *pernet, struct mptcp_pm_addr_entry *entry, - bool needs_id, bool replace) + bool replace) { struct mptcp_pm_addr_entry *cur, *del_entry = NULL; int ret = -EINVAL; @@ -769,7 +769,7 @@ static int mptcp_pm_nl_append_new_local_addr(struct pm_nl_pernet *pernet, } } - if (!entry->addr.id && needs_id) { + if (!entry->addr.id) { find_next: entry->addr.id = find_next_zero_bit(pernet->id_bitmap, MPTCP_PM_MAX_ADDR_ID + 1, @@ -780,7 +780,7 @@ find_next: } } - if (!entry->addr.id && needs_id) + if (!entry->addr.id) goto out; __set_bit(entry->addr.id, pernet->id_bitmap); @@ -909,7 +909,7 @@ int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, return -ENOMEM; entry->addr.port = 0; - ret = mptcp_pm_nl_append_new_local_addr(pernet, entry, true, false); + ret = mptcp_pm_nl_append_new_local_addr(pernet, entry, false); if (ret < 0) kfree(entry); @@ -963,18 +963,6 @@ next: return 0; } -static bool mptcp_pm_has_addr_attr_id(const struct nlattr *attr, - struct genl_info *info) -{ - struct nlattr *tb[MPTCP_PM_ADDR_ATTR_MAX + 1]; - - if (!nla_parse_nested_deprecated(tb, MPTCP_PM_ADDR_ATTR_MAX, attr, - mptcp_pm_address_nl_policy, info->extack) && - tb[MPTCP_PM_ADDR_ATTR_ID]) - return true; - return false; -} - /* Add an MPTCP endpoint */ int mptcp_pm_nl_add_addr_doit(struct sk_buff *skb, struct genl_info *info) { @@ -1023,9 +1011,7 @@ int mptcp_pm_nl_add_addr_doit(struct sk_buff *skb, struct genl_info *info) goto out_free; } } - ret = mptcp_pm_nl_append_new_local_addr(pernet, entry, - !mptcp_pm_has_addr_attr_id(attr, info), - true); + ret = mptcp_pm_nl_append_new_local_addr(pernet, entry, true); if (ret < 0) { GENL_SET_ERR_MSG_FMT(info, "too many addresses or duplicate one: %d", ret); goto out_free; diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c index 7b92da6e49d6c..09e1a93b7daab 100644 --- a/net/mptcp/protocol.c +++ b/net/mptcp/protocol.c @@ -4271,6 +4271,8 @@ int __init mptcp_proto_v6_init(void) { int err; + mptcp_subflow_v6_init(); + mptcp_v6_prot = mptcp_prot; strscpy(mptcp_v6_prot.name, "MPTCPv6", sizeof(mptcp_v6_prot.name)); mptcp_v6_prot.slab = NULL; diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 27b1698c5aa2d..5a03c8824ab68 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -830,6 +830,7 @@ static inline void mptcp_subflow_tcp_fallback(struct sock *sk, void __init mptcp_proto_init(void); #if IS_ENABLED(CONFIG_MPTCP_IPV6) int __init mptcp_proto_v6_init(void); +void __init mptcp_subflow_v6_init(void); #endif struct sock *mptcp_sk_clone_init(const struct sock *sk, diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c index 838203e2740e5..90927f6cad26a 100644 --- a/net/mptcp/subflow.c +++ b/net/mptcp/subflow.c @@ -2145,7 +2145,15 @@ void __init mptcp_subflow_init(void) tcp_prot_override.psock_update_sk_prot = NULL; #endif + mptcp_diag_subflow_init(&subflow_ulp_ops); + + if (tcp_register_ulp(&subflow_ulp_ops) != 0) + panic("MPTCP: failed to register subflows to ULP\n"); +} + #if IS_ENABLED(CONFIG_MPTCP_IPV6) +void __init mptcp_subflow_v6_init(void) +{ /* In struct mptcp_subflow_request_sock, we assume the TCP request sock * structures for v4 and v6 have the same size. It should not changed in * the future but better to make sure to be warned if it is no longer @@ -2184,10 +2192,5 @@ void __init mptcp_subflow_init(void) /* Disable sockmap processing for subflows */ tcpv6_prot_override.psock_update_sk_prot = NULL; #endif -#endif - - mptcp_diag_subflow_init(&subflow_ulp_ops); - - if (tcp_register_ulp(&subflow_ulp_ops) != 0) - panic("MPTCP: failed to register subflows to ULP\n"); } +#endif diff --git a/net/netfilter/nft_ct.c b/net/netfilter/nft_ct.c index db1bf69f87750..4f52ca4c48d51 100644 --- a/net/netfilter/nft_ct.c +++ b/net/netfilter/nft_ct.c @@ -1021,7 +1021,7 @@ static void nft_ct_timeout_obj_destroy(const struct nft_ctx *ctx, nf_queue_nf_hook_drop(ctx->net); nf_ct_untimeout(ctx->net, timeout); nf_ct_netns_put(ctx->net, ctx->family); - kfree(priv->timeout); + kfree_rcu(priv->timeout, rcu); } static int nft_ct_timeout_obj_dump(struct sk_buff *skb, diff --git a/net/rfkill/core.c b/net/rfkill/core.c index 7d3e82e4c2fce..868a8586dc170 100644 --- a/net/rfkill/core.c +++ b/net/rfkill/core.c @@ -73,11 +73,14 @@ struct rfkill_int_event { struct rfkill_event_ext ev; }; +/* Max rfkill events that can be "in-flight" for one data source */ +#define MAX_RFKILL_EVENT 1000 struct rfkill_data { struct list_head list; struct list_head events; struct mutex mtx; wait_queue_head_t read_wait; + u32 event_count; bool input_handler; u8 max_size; }; @@ -255,10 +258,12 @@ static void rfkill_global_led_trigger_unregister(void) } #endif /* CONFIG_RFKILL_LEDS */ -static void rfkill_fill_event(struct rfkill_event_ext *ev, - struct rfkill *rfkill, - enum rfkill_operation op) +static int rfkill_fill_event(struct rfkill_int_event *int_ev, + struct rfkill *rfkill, + struct rfkill_data *data, + enum rfkill_operation op) { + struct rfkill_event_ext *ev = &int_ev->ev; unsigned long flags; ev->idx = rfkill->idx; @@ -271,6 +276,15 @@ static void rfkill_fill_event(struct rfkill_event_ext *ev, RFKILL_BLOCK_SW_PREV)); ev->hard_block_reasons = rfkill->hard_block_reasons; spin_unlock_irqrestore(&rfkill->lock, flags); + + scoped_guard(mutex, &data->mtx) { + if (data->event_count++ > MAX_RFKILL_EVENT) { + data->event_count--; + return -ENOSPC; + } + list_add_tail(&int_ev->list, &data->events); + } + return 0; } static void rfkill_send_events(struct rfkill *rfkill, enum rfkill_operation op) @@ -282,10 +296,10 @@ static void rfkill_send_events(struct rfkill *rfkill, enum rfkill_operation op) ev = kzalloc(sizeof(*ev), GFP_KERNEL); if (!ev) continue; - rfkill_fill_event(&ev->ev, rfkill, op); - mutex_lock(&data->mtx); - list_add_tail(&ev->list, &data->events); - mutex_unlock(&data->mtx); + if (rfkill_fill_event(ev, rfkill, data, op)) { + kfree(ev); + continue; + } wake_up_interruptible(&data->read_wait); } } @@ -1186,10 +1200,8 @@ static int rfkill_fop_open(struct inode *inode, struct file *file) if (!ev) goto free; rfkill_sync(rfkill); - rfkill_fill_event(&ev->ev, rfkill, RFKILL_OP_ADD); - mutex_lock(&data->mtx); - list_add_tail(&ev->list, &data->events); - mutex_unlock(&data->mtx); + if (rfkill_fill_event(ev, rfkill, data, RFKILL_OP_ADD)) + kfree(ev); } list_add(&data->list, &rfkill_fds); mutex_unlock(&rfkill_global_mutex); @@ -1259,6 +1271,7 @@ static ssize_t rfkill_fop_read(struct file *file, char __user *buf, ret = -EFAULT; list_del(&ev->list); + data->event_count--; kfree(ev); out: mutex_unlock(&data->mtx); diff --git a/net/rxrpc/af_rxrpc.c b/net/rxrpc/af_rxrpc.c index d369e37525388..885a28e3afc5b 100644 --- a/net/rxrpc/af_rxrpc.c +++ b/net/rxrpc/af_rxrpc.c @@ -654,9 +654,6 @@ static int rxrpc_setsockopt(struct socket *sock, int level, int optname, goto success; case RXRPC_SECURITY_KEY: - ret = -EINVAL; - if (rx->key) - goto error; ret = -EISCONN; if (rx->sk.sk_state != RXRPC_UNBOUND) goto error; @@ -664,9 +661,6 @@ static int rxrpc_setsockopt(struct socket *sock, int level, int optname, goto error; case RXRPC_SECURITY_KEYRING: - ret = -EINVAL; - if (rx->key) - goto error; ret = -EISCONN; if (rx->sk.sk_state != RXRPC_UNBOUND) goto error; diff --git a/net/rxrpc/ar-internal.h b/net/rxrpc/ar-internal.h index 36d6ca0d1089e..96ecb83c90715 100644 --- a/net/rxrpc/ar-internal.h +++ b/net/rxrpc/ar-internal.h @@ -117,7 +117,7 @@ struct rxrpc_net { atomic_t stat_tx_jumbo[10]; atomic_t stat_rx_jumbo[10]; - atomic_t stat_why_req_ack[8]; + atomic_t stat_why_req_ack[9]; atomic_t stat_io_loop; }; diff --git a/net/rxrpc/call_object.c b/net/rxrpc/call_object.c index 918f41d97a2f9..f035f486c1397 100644 --- a/net/rxrpc/call_object.c +++ b/net/rxrpc/call_object.c @@ -654,11 +654,9 @@ void rxrpc_put_call(struct rxrpc_call *call, enum rxrpc_call_trace why) if (dead) { ASSERTCMP(__rxrpc_call_state(call), ==, RXRPC_CALL_COMPLETE); - if (!list_empty(&call->link)) { - spin_lock(&rxnet->call_lock); - list_del_init(&call->link); - spin_unlock(&rxnet->call_lock); - } + spin_lock(&rxnet->call_lock); + list_del_rcu(&call->link); + spin_unlock(&rxnet->call_lock); rxrpc_cleanup_call(call); } @@ -694,6 +692,7 @@ static void rxrpc_destroy_call(struct work_struct *work) rxrpc_put_bundle(call->bundle, rxrpc_bundle_put_call); rxrpc_put_peer(call->peer, rxrpc_peer_put_call); rxrpc_put_local(call->local, rxrpc_local_put_call); + key_put(call->key); call_rcu(&call->rcu, rxrpc_rcu_free_call); } @@ -730,24 +729,20 @@ void rxrpc_destroy_all_calls(struct rxrpc_net *rxnet) _enter(""); if (!list_empty(&rxnet->calls)) { - spin_lock(&rxnet->call_lock); + int shown = 0; - while (!list_empty(&rxnet->calls)) { - call = list_entry(rxnet->calls.next, - struct rxrpc_call, link); - _debug("Zapping call %p", call); + spin_lock(&rxnet->call_lock); - rxrpc_see_call(call, rxrpc_call_see_zap); - list_del_init(&call->link); + list_for_each_entry(call, &rxnet->calls, link) { + rxrpc_see_call(call, rxrpc_call_see_still_live); pr_err("Call %p still in use (%d,%s,%lx,%lx)!\n", call, refcount_read(&call->ref), rxrpc_call_states[__rxrpc_call_state(call)], call->flags, call->events); - spin_unlock(&rxnet->call_lock); - cond_resched(); - spin_lock(&rxnet->call_lock); + if (++shown >= 10) + break; } spin_unlock(&rxnet->call_lock); diff --git a/net/rxrpc/conn_event.c b/net/rxrpc/conn_event.c index 98ad9b51ca2cd..9a41ec708aeb9 100644 --- a/net/rxrpc/conn_event.c +++ b/net/rxrpc/conn_event.c @@ -247,6 +247,7 @@ static int rxrpc_process_event(struct rxrpc_connection *conn, struct sk_buff *skb) { struct rxrpc_skb_priv *sp = rxrpc_skb(skb); + bool secured = false; int ret; if (conn->state == RXRPC_CONN_ABORTED) @@ -262,6 +263,13 @@ static int rxrpc_process_event(struct rxrpc_connection *conn, return ret; case RXRPC_PACKET_TYPE_RESPONSE: + spin_lock_irq(&conn->state_lock); + if (conn->state != RXRPC_CONN_SERVICE_CHALLENGING) { + spin_unlock_irq(&conn->state_lock); + return 0; + } + spin_unlock_irq(&conn->state_lock); + ret = conn->security->verify_response(conn, skb); if (ret < 0) return ret; @@ -272,11 +280,13 @@ static int rxrpc_process_event(struct rxrpc_connection *conn, return ret; spin_lock_irq(&conn->state_lock); - if (conn->state == RXRPC_CONN_SERVICE_CHALLENGING) + if (conn->state == RXRPC_CONN_SERVICE_CHALLENGING) { conn->state = RXRPC_CONN_SERVICE; + secured = true; + } spin_unlock_irq(&conn->state_lock); - if (conn->state == RXRPC_CONN_SERVICE) { + if (secured) { /* Offload call state flipping to the I/O thread. As * we've already received the packet, put it on the * front of the queue. @@ -557,11 +567,11 @@ void rxrpc_post_response(struct rxrpc_connection *conn, struct sk_buff *skb) spin_lock_irq(&local->lock); old = conn->tx_response; if (old) { - struct rxrpc_skb_priv *osp = rxrpc_skb(skb); + struct rxrpc_skb_priv *osp = rxrpc_skb(old); /* Always go with the response to the most recent challenge. */ if (after(sp->resp.challenge_serial, osp->resp.challenge_serial)) - conn->tx_response = old; + conn->tx_response = skb; else old = skb; } else { @@ -569,4 +579,5 @@ void rxrpc_post_response(struct rxrpc_connection *conn, struct sk_buff *skb) } spin_unlock_irq(&local->lock); rxrpc_poke_conn(conn, rxrpc_conn_get_poke_response); + rxrpc_free_skb(old, rxrpc_skb_put_old_response); } diff --git a/net/rxrpc/input_rack.c b/net/rxrpc/input_rack.c index 13c371261e0a5..9eb109ffba56e 100644 --- a/net/rxrpc/input_rack.c +++ b/net/rxrpc/input_rack.c @@ -413,6 +413,6 @@ void rxrpc_rack_timer_expired(struct rxrpc_call *call, ktime_t overran_by) break; //case RXRPC_CALL_RACKTIMER_ZEROWIN: default: - pr_warn("Unexpected rack timer %u", call->rack_timer_mode); + pr_warn("Unexpected rack timer %u", mode); } } diff --git a/net/rxrpc/io_thread.c b/net/rxrpc/io_thread.c index e939ecf417c4b..6979569319252 100644 --- a/net/rxrpc/io_thread.c +++ b/net/rxrpc/io_thread.c @@ -419,7 +419,8 @@ static int rxrpc_input_packet_on_conn(struct rxrpc_connection *conn, if (sp->hdr.callNumber > chan->call_id) { if (rxrpc_to_client(sp)) { - rxrpc_put_call(call, rxrpc_call_put_input); + if (call) + rxrpc_put_call(call, rxrpc_call_put_input); return rxrpc_protocol_error(skb, rxrpc_eproto_unexpected_implicit_end); } diff --git a/net/rxrpc/key.c b/net/rxrpc/key.c index 9fdc1f031c9da..e0c29ebe6b6d3 100644 --- a/net/rxrpc/key.c +++ b/net/rxrpc/key.c @@ -13,6 +13,7 @@ #include <crypto/skcipher.h> #include <linux/module.h> #include <linux/net.h> +#include <linux/overflow.h> #include <linux/skbuff.h> #include <linux/key-type.h> #include <linux/ctype.h> @@ -72,7 +73,7 @@ static int rxrpc_preparse_xdr_rxkad(struct key_preparsed_payload *prep, return -EKEYREJECTED; plen = sizeof(*token) + sizeof(*token->kad) + tktlen; - prep->quotalen = datalen + plen; + prep->quotalen += datalen + plen; plen -= sizeof(*token); token = kzalloc(sizeof(*token), GFP_KERNEL); @@ -171,7 +172,7 @@ static int rxrpc_preparse_xdr_yfs_rxgk(struct key_preparsed_payload *prep, size_t plen; const __be32 *ticket, *key; s64 tmp; - u32 tktlen, keylen; + size_t raw_keylen, raw_tktlen, keylen, tktlen; _enter(",{%x,%x,%x,%x},%x", ntohl(xdr[0]), ntohl(xdr[1]), ntohl(xdr[2]), ntohl(xdr[3]), @@ -181,32 +182,36 @@ static int rxrpc_preparse_xdr_yfs_rxgk(struct key_preparsed_payload *prep, goto reject; key = xdr + (6 * 2 + 1); - keylen = ntohl(key[-1]); - _debug("keylen: %x", keylen); - keylen = round_up(keylen, 4); + raw_keylen = ntohl(key[-1]); + _debug("keylen: %zx", raw_keylen); + if (raw_keylen > AFSTOKEN_GK_KEY_MAX) + goto reject; + keylen = round_up(raw_keylen, 4); if ((6 * 2 + 2) * 4 + keylen > toklen) goto reject; ticket = xdr + (6 * 2 + 1 + (keylen / 4) + 1); - tktlen = ntohl(ticket[-1]); - _debug("tktlen: %x", tktlen); - tktlen = round_up(tktlen, 4); + raw_tktlen = ntohl(ticket[-1]); + _debug("tktlen: %zx", raw_tktlen); + if (raw_tktlen > AFSTOKEN_GK_TOKEN_MAX) + goto reject; + tktlen = round_up(raw_tktlen, 4); if ((6 * 2 + 2) * 4 + keylen + tktlen != toklen) { - kleave(" = -EKEYREJECTED [%x!=%x, %x,%x]", + kleave(" = -EKEYREJECTED [%zx!=%x, %zx,%zx]", (6 * 2 + 2) * 4 + keylen + tktlen, toklen, keylen, tktlen); goto reject; } plen = sizeof(*token) + sizeof(*token->rxgk) + tktlen + keylen; - prep->quotalen = datalen + plen; + prep->quotalen += datalen + plen; plen -= sizeof(*token); token = kzalloc(sizeof(*token), GFP_KERNEL); if (!token) goto nomem; - token->rxgk = kzalloc(sizeof(*token->rxgk) + keylen, GFP_KERNEL); + token->rxgk = kzalloc(struct_size_t(struct rxgk_key, _key, raw_keylen), GFP_KERNEL); if (!token->rxgk) goto nomem_token; @@ -221,9 +226,9 @@ static int rxrpc_preparse_xdr_yfs_rxgk(struct key_preparsed_payload *prep, token->rxgk->enctype = tmp = xdr_dec64(xdr + 5 * 2); if (tmp < 0 || tmp > UINT_MAX) goto reject_token; - token->rxgk->key.len = ntohl(key[-1]); + token->rxgk->key.len = raw_keylen; token->rxgk->key.data = token->rxgk->_key; - token->rxgk->ticket.len = ntohl(ticket[-1]); + token->rxgk->ticket.len = raw_tktlen; if (token->rxgk->endtime != 0) { expiry = rxrpc_s64_to_time64(token->rxgk->endtime); @@ -236,8 +241,7 @@ static int rxrpc_preparse_xdr_yfs_rxgk(struct key_preparsed_payload *prep, memcpy(token->rxgk->key.data, key, token->rxgk->key.len); /* Pad the ticket so that we can use it directly in XDR */ - token->rxgk->ticket.data = kzalloc(round_up(token->rxgk->ticket.len, 4), - GFP_KERNEL); + token->rxgk->ticket.data = kzalloc(tktlen, GFP_KERNEL); if (!token->rxgk->ticket.data) goto nomem_yrxgk; memcpy(token->rxgk->ticket.data, ticket, token->rxgk->ticket.len); @@ -274,6 +278,7 @@ nomem_token: nomem: return -ENOMEM; reject_token: + kfree(token->rxgk); kfree(token); reject: return -EKEYREJECTED; @@ -460,6 +465,7 @@ static int rxrpc_preparse(struct key_preparsed_payload *prep) memcpy(&kver, prep->data, sizeof(kver)); prep->data += sizeof(kver); prep->datalen -= sizeof(kver); + prep->quotalen = 0; _debug("KEY I/F VERSION: %u", kver); @@ -497,7 +503,7 @@ static int rxrpc_preparse(struct key_preparsed_payload *prep) goto error; plen = sizeof(*token->kad) + v1->ticket_length; - prep->quotalen = plen + sizeof(*token); + prep->quotalen += plen + sizeof(*token); ret = -ENOMEM; token = kzalloc(sizeof(*token), GFP_KERNEL); @@ -616,7 +622,7 @@ int rxrpc_request_key(struct rxrpc_sock *rx, sockptr_t optval, int optlen) _enter(""); - if (optlen <= 0 || optlen > PAGE_SIZE - 1 || rx->securities) + if (optlen <= 0 || optlen > PAGE_SIZE - 1 || rx->key) return -EINVAL; description = memdup_sockptr_nul(optval, optlen); diff --git a/net/rxrpc/output.c b/net/rxrpc/output.c index d70db367e358d..870e59bf06af2 100644 --- a/net/rxrpc/output.c +++ b/net/rxrpc/output.c @@ -479,6 +479,8 @@ static size_t rxrpc_prepare_data_subpacket(struct rxrpc_call *call, why = rxrpc_reqack_old_rtt; else if (!last && !after(READ_ONCE(call->send_top), txb->seq)) why = rxrpc_reqack_app_stall; + else if (call->tx_winsize <= (2 * req->n) || call->cong_cwnd <= (2 * req->n)) + why = rxrpc_reqack_jumbo_win; else goto dont_set_request_ack; diff --git a/net/rxrpc/proc.c b/net/rxrpc/proc.c index 59292f7f9205e..e9a27fa7b25d8 100644 --- a/net/rxrpc/proc.c +++ b/net/rxrpc/proc.c @@ -10,6 +10,10 @@ #include <net/af_rxrpc.h> #include "ar-internal.h" +#define RXRPC_PROC_ADDRBUF_SIZE \ + (sizeof("[xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:255.255.255.255]") + \ + sizeof(":12345")) + static const char *const rxrpc_conn_states[RXRPC_CONN__NR_STATES] = { [RXRPC_CONN_UNUSED] = "Unused ", [RXRPC_CONN_CLIENT_UNSECURED] = "ClUnsec ", @@ -53,7 +57,7 @@ static int rxrpc_call_seq_show(struct seq_file *seq, void *v) struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); enum rxrpc_call_state state; rxrpc_seq_t tx_bottom; - char lbuff[50], rbuff[50]; + char lbuff[RXRPC_PROC_ADDRBUF_SIZE], rbuff[RXRPC_PROC_ADDRBUF_SIZE]; long timeout = 0; if (v == &rxnet->calls) { @@ -69,11 +73,11 @@ static int rxrpc_call_seq_show(struct seq_file *seq, void *v) local = call->local; if (local) - sprintf(lbuff, "%pISpc", &local->srx.transport); + scnprintf(lbuff, sizeof(lbuff), "%pISpc", &local->srx.transport); else strcpy(lbuff, "no_local"); - sprintf(rbuff, "%pISpc", &call->dest_srx.transport); + scnprintf(rbuff, sizeof(rbuff), "%pISpc", &call->dest_srx.transport); state = rxrpc_call_state(call); if (state != RXRPC_CALL_SERVER_PREALLOC) @@ -142,7 +146,7 @@ static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) struct rxrpc_connection *conn; struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); const char *state; - char lbuff[50], rbuff[50]; + char lbuff[RXRPC_PROC_ADDRBUF_SIZE], rbuff[RXRPC_PROC_ADDRBUF_SIZE]; if (v == &rxnet->conn_proc_list) { seq_puts(seq, @@ -161,8 +165,8 @@ static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) goto print; } - sprintf(lbuff, "%pISpc", &conn->local->srx.transport); - sprintf(rbuff, "%pISpc", &conn->peer->srx.transport); + scnprintf(lbuff, sizeof(lbuff), "%pISpc", &conn->local->srx.transport); + scnprintf(rbuff, sizeof(rbuff), "%pISpc", &conn->peer->srx.transport); print: state = rxrpc_is_conn_aborted(conn) ? rxrpc_call_completions[conn->completion] : @@ -228,7 +232,7 @@ static int rxrpc_bundle_seq_show(struct seq_file *seq, void *v) { struct rxrpc_bundle *bundle; struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); - char lbuff[50], rbuff[50]; + char lbuff[RXRPC_PROC_ADDRBUF_SIZE], rbuff[RXRPC_PROC_ADDRBUF_SIZE]; if (v == &rxnet->bundle_proc_list) { seq_puts(seq, @@ -242,8 +246,8 @@ static int rxrpc_bundle_seq_show(struct seq_file *seq, void *v) bundle = list_entry(v, struct rxrpc_bundle, proc_link); - sprintf(lbuff, "%pISpc", &bundle->local->srx.transport); - sprintf(rbuff, "%pISpc", &bundle->peer->srx.transport); + scnprintf(lbuff, sizeof(lbuff), "%pISpc", &bundle->local->srx.transport); + scnprintf(rbuff, sizeof(rbuff), "%pISpc", &bundle->peer->srx.transport); seq_printf(seq, "UDP %-47.47s %-47.47s %4x %3u %3d" " %c%c%c %08x | %08x %08x %08x %08x %08x\n", @@ -279,7 +283,7 @@ static int rxrpc_peer_seq_show(struct seq_file *seq, void *v) { struct rxrpc_peer *peer; time64_t now; - char lbuff[50], rbuff[50]; + char lbuff[RXRPC_PROC_ADDRBUF_SIZE], rbuff[RXRPC_PROC_ADDRBUF_SIZE]; if (v == SEQ_START_TOKEN) { seq_puts(seq, @@ -290,9 +294,9 @@ static int rxrpc_peer_seq_show(struct seq_file *seq, void *v) peer = list_entry(v, struct rxrpc_peer, hash_link); - sprintf(lbuff, "%pISpc", &peer->local->srx.transport); + scnprintf(lbuff, sizeof(lbuff), "%pISpc", &peer->local->srx.transport); - sprintf(rbuff, "%pISpc", &peer->srx.transport); + scnprintf(rbuff, sizeof(rbuff), "%pISpc", &peer->srx.transport); now = ktime_get_seconds(); seq_printf(seq, @@ -401,7 +405,7 @@ const struct seq_operations rxrpc_peer_seq_ops = { static int rxrpc_local_seq_show(struct seq_file *seq, void *v) { struct rxrpc_local *local; - char lbuff[50]; + char lbuff[RXRPC_PROC_ADDRBUF_SIZE]; if (v == SEQ_START_TOKEN) { seq_puts(seq, @@ -412,7 +416,7 @@ static int rxrpc_local_seq_show(struct seq_file *seq, void *v) local = hlist_entry(v, struct rxrpc_local, link); - sprintf(lbuff, "%pISpc", &local->srx.transport); + scnprintf(lbuff, sizeof(lbuff), "%pISpc", &local->srx.transport); seq_printf(seq, "UDP %-47.47s %3u %3u %3u\n", @@ -518,11 +522,12 @@ int rxrpc_stats_show(struct seq_file *seq, void *v) atomic_read(&rxnet->stat_rx_acks[RXRPC_ACK_IDLE]), atomic_read(&rxnet->stat_rx_acks[0])); seq_printf(seq, - "Why-Req-A: acklost=%u mrtt=%u ortt=%u stall=%u\n", + "Why-Req-A: acklost=%u mrtt=%u ortt=%u stall=%u jwin=%u\n", atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_ack_lost]), atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_more_rtt]), atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_old_rtt]), - atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_app_stall])); + atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_app_stall]), + atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_jumbo_win])); seq_printf(seq, "Why-Req-A: nolast=%u retx=%u slows=%u smtxw=%u\n", atomic_read(&rxnet->stat_why_req_ack[rxrpc_reqack_no_srv_last]), diff --git a/net/rxrpc/rxgk.c b/net/rxrpc/rxgk.c index 43cbf9efd89f1..c39f5066d8e86 100644 --- a/net/rxrpc/rxgk.c +++ b/net/rxrpc/rxgk.c @@ -1085,6 +1085,9 @@ static int rxgk_do_verify_authenticator(struct rxrpc_connection *conn, _enter(""); + if ((end - p) * sizeof(__be32) < 24) + return rxrpc_abort_conn(conn, skb, RXGK_NOTAUTH, -EPROTO, + rxgk_abort_resp_short_auth); if (memcmp(p, conn->rxgk.nonce, 20) != 0) return rxrpc_abort_conn(conn, skb, RXGK_NOTAUTH, -EPROTO, rxgk_abort_resp_bad_nonce); @@ -1098,7 +1101,7 @@ static int rxgk_do_verify_authenticator(struct rxrpc_connection *conn, p += xdr_round_up(app_len) / sizeof(__be32); if (end - p < 4) return rxrpc_abort_conn(conn, skb, RXGK_NOTAUTH, -EPROTO, - rxgk_abort_resp_short_applen); + rxgk_abort_resp_short_auth); level = ntohl(*p++); epoch = ntohl(*p++); @@ -1164,7 +1167,8 @@ static int rxgk_verify_authenticator(struct rxrpc_connection *conn, } p = auth; - ret = rxgk_do_verify_authenticator(conn, krb5, skb, p, p + auth_len); + ret = rxgk_do_verify_authenticator(conn, krb5, skb, p, + p + auth_len / sizeof(*p)); error: kfree(auth); return ret; @@ -1208,7 +1212,8 @@ static int rxgk_verify_response(struct rxrpc_connection *conn, token_offset = offset; token_len = ntohl(rhdr.token_len); - if (xdr_round_up(token_len) + sizeof(__be32) > len) + if (token_len > len || + xdr_round_up(token_len) + sizeof(__be32) > len) goto short_packet; trace_rxrpc_rx_response(conn, sp->hdr.serial, 0, sp->hdr.cksum, token_len); @@ -1223,7 +1228,7 @@ static int rxgk_verify_response(struct rxrpc_connection *conn, auth_offset = offset; auth_len = ntohl(xauth_len); - if (auth_len < len) + if (auth_len > len) goto short_packet; if (auth_len & 3) goto inconsistent; @@ -1268,16 +1273,18 @@ static int rxgk_verify_response(struct rxrpc_connection *conn, if (ret < 0) { rxrpc_abort_conn(conn, skb, RXGK_SEALEDINCON, ret, rxgk_abort_resp_auth_dec); - goto out; + goto out_gk; } ret = rxgk_verify_authenticator(conn, krb5, skb, auth_offset, auth_len); if (ret < 0) - goto out; + goto out_gk; conn->key = key; key = NULL; ret = 0; +out_gk: + rxgk_put(gk); out: key_put(key); _leave(" = %d", ret); diff --git a/net/rxrpc/rxkad.c b/net/rxrpc/rxkad.c index a756855a0a62d..4a3c630941499 100644 --- a/net/rxrpc/rxkad.c +++ b/net/rxrpc/rxkad.c @@ -197,6 +197,7 @@ static int rxkad_prime_packet_security(struct rxrpc_connection *conn, struct rxrpc_crypt iv; __be32 *tmpbuf; size_t tmpsize = 4 * sizeof(__be32); + int ret; _enter(""); @@ -225,13 +226,13 @@ static int rxkad_prime_packet_security(struct rxrpc_connection *conn, skcipher_request_set_sync_tfm(req, ci); skcipher_request_set_callback(req, 0, NULL, NULL); skcipher_request_set_crypt(req, &sg, &sg, tmpsize, iv.x); - crypto_skcipher_encrypt(req); + ret = crypto_skcipher_encrypt(req); skcipher_request_free(req); memcpy(&conn->rxkad.csum_iv, tmpbuf + 2, sizeof(conn->rxkad.csum_iv)); kfree(tmpbuf); - _leave(" = 0"); - return 0; + _leave(" = %d", ret); + return ret; } /* @@ -264,6 +265,7 @@ static int rxkad_secure_packet_auth(const struct rxrpc_call *call, struct scatterlist sg; size_t pad; u16 check; + int ret; _enter(""); @@ -286,11 +288,11 @@ static int rxkad_secure_packet_auth(const struct rxrpc_call *call, skcipher_request_set_sync_tfm(req, call->conn->rxkad.cipher); skcipher_request_set_callback(req, 0, NULL, NULL); skcipher_request_set_crypt(req, &sg, &sg, 8, iv.x); - crypto_skcipher_encrypt(req); + ret = crypto_skcipher_encrypt(req); skcipher_request_zero(req); - _leave(" = 0"); - return 0; + _leave(" = %d", ret); + return ret; } /* @@ -345,7 +347,7 @@ static int rxkad_secure_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb) union { __be32 buf[2]; } crypto __aligned(8); - u32 x, y; + u32 x, y = 0; int ret; _enter("{%d{%x}},{#%u},%u,", @@ -376,8 +378,10 @@ static int rxkad_secure_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb) skcipher_request_set_sync_tfm(req, call->conn->rxkad.cipher); skcipher_request_set_callback(req, 0, NULL, NULL); skcipher_request_set_crypt(req, &sg, &sg, 8, iv.x); - crypto_skcipher_encrypt(req); + ret = crypto_skcipher_encrypt(req); skcipher_request_zero(req); + if (ret < 0) + goto out; y = ntohl(crypto.buf[1]); y = (y >> 16) & 0xffff; @@ -413,6 +417,7 @@ static int rxkad_secure_packet(struct rxrpc_call *call, struct rxrpc_txbuf *txb) memset(p + txb->pkt_len, 0, gap); } +out: skcipher_request_free(req); _leave(" = %d [set %x]", ret, y); return ret; @@ -453,8 +458,10 @@ static int rxkad_verify_packet_1(struct rxrpc_call *call, struct sk_buff *skb, skcipher_request_set_sync_tfm(req, call->conn->rxkad.cipher); skcipher_request_set_callback(req, 0, NULL, NULL); skcipher_request_set_crypt(req, sg, sg, 8, iv.x); - crypto_skcipher_decrypt(req); + ret = crypto_skcipher_decrypt(req); skcipher_request_zero(req); + if (ret < 0) + return ret; /* Extract the decrypted packet length */ if (skb_copy_bits(skb, sp->offset, &sechdr, sizeof(sechdr)) < 0) @@ -531,10 +538,14 @@ static int rxkad_verify_packet_2(struct rxrpc_call *call, struct sk_buff *skb, skcipher_request_set_sync_tfm(req, call->conn->rxkad.cipher); skcipher_request_set_callback(req, 0, NULL, NULL); skcipher_request_set_crypt(req, sg, sg, sp->len, iv.x); - crypto_skcipher_decrypt(req); + ret = crypto_skcipher_decrypt(req); skcipher_request_zero(req); if (sg != _sg) kfree(sg); + if (ret < 0) { + WARN_ON_ONCE(ret != -ENOMEM); + return ret; + } /* Extract the decrypted packet length */ if (skb_copy_bits(skb, sp->offset, &sechdr, sizeof(sechdr)) < 0) @@ -602,8 +613,10 @@ static int rxkad_verify_packet(struct rxrpc_call *call, struct sk_buff *skb) skcipher_request_set_sync_tfm(req, call->conn->rxkad.cipher); skcipher_request_set_callback(req, 0, NULL, NULL); skcipher_request_set_crypt(req, &sg, &sg, 8, iv.x); - crypto_skcipher_encrypt(req); + ret = crypto_skcipher_encrypt(req); skcipher_request_zero(req); + if (ret < 0) + goto out; y = ntohl(crypto.buf[1]); cksum = (y >> 16) & 0xffff; @@ -958,6 +971,7 @@ static int rxkad_decrypt_ticket(struct rxrpc_connection *conn, struct in_addr addr; unsigned int life; time64_t issue, now; + int ret; bool little_endian; u8 *p, *q, *name, *end; @@ -977,8 +991,11 @@ static int rxkad_decrypt_ticket(struct rxrpc_connection *conn, sg_init_one(&sg[0], ticket, ticket_len); skcipher_request_set_callback(req, 0, NULL, NULL); skcipher_request_set_crypt(req, sg, sg, ticket_len, iv.x); - crypto_skcipher_decrypt(req); + ret = crypto_skcipher_decrypt(req); skcipher_request_free(req); + if (ret < 0) + return rxrpc_abort_conn(conn, skb, RXKADBADTICKET, -EPROTO, + rxkad_abort_resp_tkt_short); p = ticket; end = p + ticket_len; @@ -1073,21 +1090,23 @@ static int rxkad_decrypt_ticket(struct rxrpc_connection *conn, /* * decrypt the response packet */ -static void rxkad_decrypt_response(struct rxrpc_connection *conn, - struct rxkad_response *resp, - const struct rxrpc_crypt *session_key) +static int rxkad_decrypt_response(struct rxrpc_connection *conn, + struct rxkad_response *resp, + const struct rxrpc_crypt *session_key) { struct skcipher_request *req = rxkad_ci_req; struct scatterlist sg[1]; struct rxrpc_crypt iv; + int ret; _enter(",,%08x%08x", ntohl(session_key->n[0]), ntohl(session_key->n[1])); mutex_lock(&rxkad_ci_mutex); - if (crypto_sync_skcipher_setkey(rxkad_ci, session_key->x, - sizeof(*session_key)) < 0) - BUG(); + ret = crypto_sync_skcipher_setkey(rxkad_ci, session_key->x, + sizeof(*session_key)); + if (ret < 0) + goto unlock; memcpy(&iv, session_key, sizeof(iv)); @@ -1096,12 +1115,14 @@ static void rxkad_decrypt_response(struct rxrpc_connection *conn, skcipher_request_set_sync_tfm(req, rxkad_ci); skcipher_request_set_callback(req, 0, NULL, NULL); skcipher_request_set_crypt(req, sg, sg, sizeof(resp->encrypted), iv.x); - crypto_skcipher_decrypt(req); + ret = crypto_skcipher_decrypt(req); skcipher_request_zero(req); +unlock: mutex_unlock(&rxkad_ci_mutex); _leave(""); + return ret; } /* @@ -1194,7 +1215,9 @@ static int rxkad_verify_response(struct rxrpc_connection *conn, /* use the session key from inside the ticket to decrypt the * response */ - rxkad_decrypt_response(conn, response, &session_key); + ret = rxkad_decrypt_response(conn, response, &session_key); + if (ret < 0) + goto temporary_error_free_ticket; if (ntohl(response->encrypted.epoch) != conn->proto.epoch || ntohl(response->encrypted.cid) != conn->proto.cid || diff --git a/net/rxrpc/sendmsg.c b/net/rxrpc/sendmsg.c index ebbb78b842de8..39a6b21d6b8f7 100644 --- a/net/rxrpc/sendmsg.c +++ b/net/rxrpc/sendmsg.c @@ -637,7 +637,7 @@ rxrpc_new_client_call_for_sendmsg(struct rxrpc_sock *rx, struct msghdr *msg, memset(&cp, 0, sizeof(cp)); cp.local = rx->local; cp.peer = peer; - cp.key = rx->key; + cp.key = key; cp.security_level = rx->min_sec_level; cp.exclusive = rx->exclusive | p->exclusive; cp.upgrade = p->upgrade; diff --git a/net/rxrpc/server_key.c b/net/rxrpc/server_key.c index 36b05fd842a7b..27491f1e12736 100644 --- a/net/rxrpc/server_key.c +++ b/net/rxrpc/server_key.c @@ -125,6 +125,9 @@ int rxrpc_server_keyring(struct rxrpc_sock *rx, sockptr_t optval, int optlen) _enter(""); + if (rx->securities) + return -EINVAL; + if (optlen <= 0 || optlen > PAGE_SIZE - 1) return -EINVAL; diff --git a/net/tipc/group.c b/net/tipc/group.c index 3e137d8c9d2ff..215f2a7d84588 100644 --- a/net/tipc/group.c +++ b/net/tipc/group.c @@ -746,6 +746,7 @@ void tipc_group_proto_rcv(struct tipc_group *grp, bool *usr_wakeup, u32 port = msg_origport(hdr); struct tipc_member *m, *pm; u16 remitted, in_flight; + u16 acked; if (!grp) return; @@ -798,7 +799,10 @@ void tipc_group_proto_rcv(struct tipc_group *grp, bool *usr_wakeup, case GRP_ACK_MSG: if (!m) return; - m->bc_acked = msg_grp_bc_acked(hdr); + acked = msg_grp_bc_acked(hdr); + if (less_eq(acked, m->bc_acked)) + return; + m->bc_acked = acked; if (--grp->bc_ackers) return; list_del_init(&m->small_win); diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index eecf1146c34f2..16aaf41a8cc09 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -584,6 +584,16 @@ static int tls_do_encryption(struct sock *sk, if (rc == -EBUSY) { rc = tls_encrypt_async_wait(ctx); rc = rc ?: -EINPROGRESS; + /* + * The async callback tls_encrypt_done() has already + * decremented encrypt_pending and restored the sge on + * both success and error. Skip the synchronous cleanup + * below on error, just remove the record and return. + */ + if (rc != -EINPROGRESS) { + list_del(&rec->list); + return rc; + } } if (!rc || rc != -EINPROGRESS) { atomic_dec(&ctx->encrypt_pending); diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c index 79943fb348064..6b251c76f6bec 100644 --- a/net/unix/af_unix.c +++ b/net/unix/af_unix.c @@ -1979,6 +1979,8 @@ static void unix_detach_fds(struct scm_cookie *scm, struct sk_buff *skb) static void unix_peek_fds(struct scm_cookie *scm, struct sk_buff *skb) { scm->fp = scm_fp_dup(UNIXCB(skb).fp); + + unix_peek_fpl(scm->fp); } static void unix_destruct_scm(struct sk_buff *skb) diff --git a/net/unix/af_unix.h b/net/unix/af_unix.h index 59db179df9bb5..6b96c1007aecd 100644 --- a/net/unix/af_unix.h +++ b/net/unix/af_unix.h @@ -30,6 +30,7 @@ void unix_del_edges(struct scm_fp_list *fpl); void unix_update_edges(struct unix_sock *receiver); int unix_prepare_fpl(struct scm_fp_list *fpl); void unix_destroy_fpl(struct scm_fp_list *fpl); +void unix_peek_fpl(struct scm_fp_list *fpl); void unix_gc(void); void wait_for_unix_gc(struct scm_fp_list *fpl); diff --git a/net/unix/garbage.c b/net/unix/garbage.c index 65396a4e1b07e..529b21d043d92 100644 --- a/net/unix/garbage.c +++ b/net/unix/garbage.c @@ -121,8 +121,13 @@ static struct unix_vertex *unix_edge_successor(struct unix_edge *edge) return edge->successor->vertex; } -static bool unix_graph_maybe_cyclic; -static bool unix_graph_grouped; +enum { + UNIX_GRAPH_NOT_CYCLIC, + UNIX_GRAPH_MAYBE_CYCLIC, + UNIX_GRAPH_CYCLIC, +}; + +static unsigned char unix_graph_state; static void unix_update_graph(struct unix_vertex *vertex) { @@ -132,8 +137,7 @@ static void unix_update_graph(struct unix_vertex *vertex) if (!vertex) return; - unix_graph_maybe_cyclic = true; - unix_graph_grouped = false; + unix_graph_state = UNIX_GRAPH_MAYBE_CYCLIC; } static LIST_HEAD(unix_unvisited_vertices); @@ -315,6 +319,25 @@ void unix_destroy_fpl(struct scm_fp_list *fpl) unix_free_vertices(fpl); } +static bool gc_in_progress; +static seqcount_t unix_peek_seq = SEQCNT_ZERO(unix_peek_seq); + +void unix_peek_fpl(struct scm_fp_list *fpl) +{ + static DEFINE_SPINLOCK(unix_peek_lock); + + if (!fpl || !fpl->count_unix) + return; + + if (!READ_ONCE(gc_in_progress)) + return; + + /* Invalidate the final refcnt check in unix_vertex_dead(). */ + spin_lock(&unix_peek_lock); + raw_write_seqcount_barrier(&unix_peek_seq); + spin_unlock(&unix_peek_lock); +} + static bool unix_vertex_dead(struct unix_vertex *vertex) { struct unix_edge *edge; @@ -348,6 +371,36 @@ static bool unix_vertex_dead(struct unix_vertex *vertex) return true; } +static LIST_HEAD(unix_visited_vertices); +static unsigned long unix_vertex_grouped_index = UNIX_VERTEX_INDEX_MARK2; + +static bool unix_scc_dead(struct list_head *scc, bool fast) +{ + struct unix_vertex *vertex; + bool scc_dead = true; + unsigned int seq; + + seq = read_seqcount_begin(&unix_peek_seq); + + list_for_each_entry_reverse(vertex, scc, scc_entry) { + /* Don't restart DFS from this vertex. */ + list_move_tail(&vertex->entry, &unix_visited_vertices); + + /* Mark vertex as off-stack for __unix_walk_scc(). */ + if (!fast) + vertex->index = unix_vertex_grouped_index; + + if (scc_dead) + scc_dead = unix_vertex_dead(vertex); + } + + /* If MSG_PEEK intervened, defer this SCC to the next round. */ + if (read_seqcount_retry(&unix_peek_seq, seq)) + return false; + + return scc_dead; +} + static void unix_collect_skb(struct list_head *scc, struct sk_buff_head *hitlist) { struct unix_vertex *vertex; @@ -401,12 +454,11 @@ static bool unix_scc_cyclic(struct list_head *scc) return false; } -static LIST_HEAD(unix_visited_vertices); -static unsigned long unix_vertex_grouped_index = UNIX_VERTEX_INDEX_MARK2; - -static void __unix_walk_scc(struct unix_vertex *vertex, unsigned long *last_index, - struct sk_buff_head *hitlist) +static unsigned long __unix_walk_scc(struct unix_vertex *vertex, + unsigned long *last_index, + struct sk_buff_head *hitlist) { + unsigned long cyclic_sccs = 0; LIST_HEAD(vertex_stack); struct unix_edge *edge; LIST_HEAD(edge_stack); @@ -469,9 +521,7 @@ prev_vertex: } if (vertex->index == vertex->scc_index) { - struct unix_vertex *v; struct list_head scc; - bool scc_dead = true; /* SCC finalised. * @@ -480,25 +530,14 @@ prev_vertex: */ __list_cut_position(&scc, &vertex_stack, &vertex->scc_entry); - list_for_each_entry_reverse(v, &scc, scc_entry) { - /* Don't restart DFS from this vertex in unix_walk_scc(). */ - list_move_tail(&v->entry, &unix_visited_vertices); - - /* Mark vertex as off-stack. */ - v->index = unix_vertex_grouped_index; - - if (scc_dead) - scc_dead = unix_vertex_dead(v); - } - - if (scc_dead) { + if (unix_scc_dead(&scc, false)) { unix_collect_skb(&scc, hitlist); } else { if (unix_vertex_max_scc_index < vertex->scc_index) unix_vertex_max_scc_index = vertex->scc_index; - if (!unix_graph_maybe_cyclic) - unix_graph_maybe_cyclic = unix_scc_cyclic(&scc); + if (unix_scc_cyclic(&scc)) + cyclic_sccs++; } list_del(&scc); @@ -507,13 +546,17 @@ prev_vertex: /* Need backtracking ? */ if (!list_empty(&edge_stack)) goto prev_vertex; + + return cyclic_sccs; } +static unsigned long unix_graph_cyclic_sccs; + static void unix_walk_scc(struct sk_buff_head *hitlist) { unsigned long last_index = UNIX_VERTEX_INDEX_START; + unsigned long cyclic_sccs = 0; - unix_graph_maybe_cyclic = false; unix_vertex_max_scc_index = UNIX_VERTEX_INDEX_START; /* Visit every vertex exactly once. @@ -523,46 +566,40 @@ static void unix_walk_scc(struct sk_buff_head *hitlist) struct unix_vertex *vertex; vertex = list_first_entry(&unix_unvisited_vertices, typeof(*vertex), entry); - __unix_walk_scc(vertex, &last_index, hitlist); + cyclic_sccs += __unix_walk_scc(vertex, &last_index, hitlist); } list_replace_init(&unix_visited_vertices, &unix_unvisited_vertices); swap(unix_vertex_unvisited_index, unix_vertex_grouped_index); - unix_graph_grouped = true; + unix_graph_cyclic_sccs = cyclic_sccs; + unix_graph_state = cyclic_sccs ? UNIX_GRAPH_CYCLIC : UNIX_GRAPH_NOT_CYCLIC; } static void unix_walk_scc_fast(struct sk_buff_head *hitlist) { - unix_graph_maybe_cyclic = false; + unsigned long cyclic_sccs = unix_graph_cyclic_sccs; while (!list_empty(&unix_unvisited_vertices)) { struct unix_vertex *vertex; struct list_head scc; - bool scc_dead = true; vertex = list_first_entry(&unix_unvisited_vertices, typeof(*vertex), entry); list_add(&scc, &vertex->scc_entry); - list_for_each_entry_reverse(vertex, &scc, scc_entry) { - list_move_tail(&vertex->entry, &unix_visited_vertices); - - if (scc_dead) - scc_dead = unix_vertex_dead(vertex); - } - - if (scc_dead) + if (unix_scc_dead(&scc, true)) { + cyclic_sccs--; unix_collect_skb(&scc, hitlist); - else if (!unix_graph_maybe_cyclic) - unix_graph_maybe_cyclic = unix_scc_cyclic(&scc); + } list_del(&scc); } list_replace_init(&unix_visited_vertices, &unix_unvisited_vertices); -} -static bool gc_in_progress; + unix_graph_cyclic_sccs = cyclic_sccs; + unix_graph_state = cyclic_sccs ? UNIX_GRAPH_CYCLIC : UNIX_GRAPH_NOT_CYCLIC; +} static void __unix_gc(struct work_struct *work) { @@ -571,14 +608,14 @@ static void __unix_gc(struct work_struct *work) spin_lock(&unix_gc_lock); - if (!unix_graph_maybe_cyclic) { + if (unix_graph_state == UNIX_GRAPH_NOT_CYCLIC) { spin_unlock(&unix_gc_lock); goto skip_gc; } __skb_queue_head_init(&hitlist); - if (unix_graph_grouped) + if (unix_graph_state == UNIX_GRAPH_CYCLIC) unix_walk_scc_fast(&hitlist); else unix_walk_scc(&hitlist); diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c index c9ddef869aa55..3d80c5210e040 100644 --- a/net/xfrm/xfrm_input.c +++ b/net/xfrm/xfrm_input.c @@ -503,7 +503,6 @@ int xfrm_input(struct sk_buff *skb, int nexthdr, __be32 spi, int encap_type) /* An encap_type of -1 indicates async resumption. */ if (encap_type == -1) { async = 1; - dev_put(skb->dev); seq = XFRM_SKB_CB(skb)->seq.input.low; goto resume; } @@ -656,8 +655,11 @@ lock: dev_hold(skb->dev); nexthdr = x->type->input(x, skb); - if (nexthdr == -EINPROGRESS) + if (nexthdr == -EINPROGRESS) { + if (async) + dev_put(skb->dev); return 0; + } dev_put(skb->dev); } @@ -692,9 +694,11 @@ resume: XFRM_MODE_SKB_CB(skb)->protocol = nexthdr; err = xfrm_inner_mode_input(x, skb); - if (err == -EINPROGRESS) + if (err == -EINPROGRESS) { + if (async) + dev_put(skb->dev); return 0; - else if (err) { + } else if (err) { XFRM_INC_STATS(net, LINUX_MIB_XFRMINSTATEMODEERROR); goto drop; } @@ -731,6 +735,8 @@ resume_decapped: sp->olen = 0; if (skb_valid_dst(skb)) skb_dst_drop(skb); + if (async) + dev_put(skb->dev); gro_cells_receive(&gro_cells, skb); return 0; } else { @@ -750,6 +756,8 @@ resume_decapped: sp->olen = 0; if (skb_valid_dst(skb)) skb_dst_drop(skb); + if (async) + dev_put(skb->dev); gro_cells_receive(&gro_cells, skb); return err; } @@ -760,6 +768,8 @@ resume_decapped: drop_unlock: spin_unlock(&x->lock); drop: + if (async) + dev_put(skb->dev); xfrm_rcv_cb(skb, family, x && x->type ? x->type->proto : nexthdr, -1); kfree_skb(skb); return 0; diff --git a/net/xfrm/xfrm_user.c b/net/xfrm/xfrm_user.c index 4dd8341225bce..306e4f65ce264 100644 --- a/net/xfrm/xfrm_user.c +++ b/net/xfrm/xfrm_user.c @@ -3951,6 +3951,8 @@ static int build_polexpire(struct sk_buff *skb, struct xfrm_policy *xp, return err; } upe->hard = !!hard; + /* clear the padding bytes */ + memset_after(upe, 0, hard); nlmsg_end(skb, nlh); return 0; @@ -4108,6 +4110,7 @@ static int build_report(struct sk_buff *skb, u8 proto, return -EMSGSIZE; ur = nlmsg_data(nlh); + memset(ur, 0, sizeof(*ur)); ur->proto = proto; memcpy(&ur->sel, sel, sizeof(ur->sel)); |