AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity
224903cc60
kernel_optimize_test/net
History
Ido Schimmel f655b724b4 ipv4: Invalidate neighbour for broadcast address upon address addition 
[ Upstream commit 0c51e12e218f20b7d976158fdc18019627326f7a ]

In case user space sends a packet destined to a broadcast address when a
matching broadcast route is not configured, the kernel will create a
unicast neighbour entry that will never be resolved [1].

When the broadcast route is configured, the unicast neighbour entry will
not be invalidated and continue to linger, resulting in packets being
dropped.

Solve this by invalidating unresolved neighbour entries for broadcast
addresses after routes for these addresses are internally configured by
the kernel. This allows the kernel to create a broadcast neighbour entry
following the next route lookup.

Another possible solution that is more generic but also more complex is
to have the ARP code register a listener to the FIB notification chain
and invalidate matching neighbour entries upon the addition of broadcast
routes.

It is also possible to wave off the issue as a user space problem, but
it seems a bit excessive to expect user space to be that intimately
familiar with the inner workings of the FIB/neighbour kernel code.

[1] https://lore.kernel.org/netdev/55a04a8f-56f3-f73c-2aea-2195923f09d1@huawei.com/

Reported-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Tested-by: Wang Hai <wanghai38@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-04-13 21:00:57 +02:00
..
6lowpan 6lowpan: iphc: Fix an off-by-one check of array index 2021-09-15 09:50:34 +02:00
9p xen/9p: use alloc/free_pages_exact() 2022-03-11 12:11:54 +01:00
802 net/802/garp: fix memleak in garp_request_join() 2021-07-31 08:16:11 +02:00
8021q net: vlan: fix underflow for the real_dev refcnt 2021-12-01 09:19:08 +01:00
appletalk appletalk: Fix skb allocation size in loopback case 2021-04-07 15:00:08 +02:00
atm net: atm: fix update of position index in lec_seq_next 2020-10-31 12:26:30 -07:00
ax25 ax25: Fix NULL pointer dereference in ax25_kill_by_device 2022-03-16 14:15:58 +01:00
batman-adv ipv6: make mc_forwarding atomic 2022-04-13 21:00:56 +02:00
bluetooth Bluetooth: call hci_le_conn_failed with hdev lock in hci_le_conn_failed 2022-04-08 14:40:22 +02:00
bpf bpf, test, cgroup: Use sk_{alloc,free} for test cases 2021-10-27 09:56:56 +02:00
bpfilter bpfilter: Specify the log level for the kmsg message 2021-07-14 16:56:29 +02:00
bridge net: bridge: vlan: fix memory leak in __allowed_ingress 2022-02-01 17:25:48 +01:00
caif net-caif: avoid user-triggerable WARN_ON(1) 2021-09-22 12:27:56 +02:00
can can: isotp: restore accidentally removed MSG_PEEK feature 2022-04-08 14:40:42 +02:00
ceph libceph: clear con->out_msg on Policy::stateful_server faults 2020-10-12 15:29:27 +02:00
core bpf: Make dst_port field in struct bpf_sock 16-bit wide 2022-04-13 21:00:55 +02:00
dcb net: dcb: disable softirqs in dcbnl_flush_dev() 2022-03-08 19:09:37 +01:00
dccp tcp: switch orphan_count to bare per-cpu counters 2021-11-18 14:04:08 +01:00
decnet net: decnet: Fix sleeping inside in af_decnet 2021-07-28 14:35:38 +02:00
dns_resolver
dsa net: dsa: Add missing of_node_put() in dsa_port_parse_of 2022-03-23 09:13:28 +01:00
ethernet
ethtool ethtool: do not perform operations on net devices being unregistered 2021-12-17 10:14:41 +01:00
hsr net: hsr: fix mac_len checks 2021-06-03 09:00:50 +02:00
ieee802154 net: ieee802154: Return meaningful error codes from the netlink helpers 2022-02-08 18:30:37 +01:00
ife
ipv4 ipv4: Invalidate neighbour for broadcast address upon address addition 2022-04-13 21:00:57 +02:00
ipv6 tcp: Don't acquire inet_listen_hashbucket::lock with disabled BH. 2022-04-13 21:00:57 +02:00
iucv net/af_iucv: remove WARN_ONCE on malformed RX packets 2021-03-07 12:34:05 +01:00
kcm
key af_key: add __GFP_ZERO flag for compose_sadb_supported in function pfkey_register 2022-04-08 14:39:48 +02:00
l2tp net/l2tp: Fix reference count leak in l2tp_udp_recv_core 2021-09-22 12:27:56 +02:00
l3mdev
lapb net: lapb: Copy the skb before sending a packet 2021-02-10 09:29:14 +01:00
llc llc: only change llc->dev when bind() succeeds 2022-03-28 09:57:10 +02:00
mac80211 mac80211: fix potential double free on mesh join 2022-03-28 09:57:10 +02:00
mac802154 net: mac802154: Fix general protection fault 2021-04-14 08:42:13 +02:00
mpls net: mpls: Fix notifications when deleting a device 2021-12-08 09:03:23 +01:00
mptcp mptcp: clear 'kern' flag from fallback sockets 2021-12-22 09:30:54 +01:00
ncsi net/ncsi: check for error return from call to nla_put_u32 2022-01-05 12:40:32 +01:00
netfilter netfilter: nf_conntrack_tcp: preserve liberal flag in tcp options 2022-04-08 14:40:28 +02:00
netlabel net: fix NULL pointer reference in cipso_v4_doi_free 2021-09-18 13:40:35 +02:00
netlink af_netlink: Fix shift out of bounds in group mask calculation 2022-04-08 14:40:22 +02:00
netrom netrom: fix api breakage in nr_setsockopt() 2022-01-27 10:54:03 +01:00
nfc nfc: llcp: fix NULL error pointer dereference on sendmsg() after failed bind() 2022-01-27 10:53:41 +01:00
nsh
openvswitch openvswitch: Fixed nd target mask field in the flow dump. 2022-04-08 14:40:44 +02:00
packet net/packet: fix slab-out-of-bounds access in packet_recvmsg() 2022-03-23 09:13:27 +01:00
phonet phonet: refcount leak in pep_sock_accep 2022-01-11 15:25:01 +01:00
psample net: psample: Fix netlink skb length with tunnel info 2021-03-07 12:34:07 +01:00
qrtr net: qrtr: fix another OOB Read in qrtr_endpoint_post 2021-09-03 10:09:21 +02:00
rds rds: memory leak in __rds_conn_create() 2021-12-22 09:30:54 +01:00
rfkill rfkill: Fix use-after-free in rfkill_resume() 2020-11-12 09:18:06 +01:00
rose rose: Fix Null pointer dereference in rose_send_frame() 2020-11-20 10:04:58 -08:00
rxrpc rxrpc: Fix call timer start racing with call destruction 2022-04-08 14:40:41 +02:00
sched net/sched: act_ct: Fix flow table lookup after ct clear or switching zones 2022-03-02 11:42:50 +01:00
sctp sctp: fix the processing for INIT chunk 2022-03-19 13:44:42 +01:00
smc net/smc: fix unexpected SMC_CLC_DECL_ERR_REGRMB error cause by server 2022-03-08 19:09:33 +01:00
strparser bpf: sockmap, strparser, and tls are reusing qdisc_skb_cb and colliding 2021-11-18 14:04:27 +01:00
sunrpc SUNRPC: avoid race between mod_timer() and del_timer_sync() 2022-04-08 14:39:50 +02:00
switchdev net: switchdev: don't set port_obj_info->handled true when -EOPNOTSUPP 2021-02-07 15:37:12 +01:00
tipc tipc: fix the timer expires after interval 100ms 2022-04-08 14:40:23 +02:00
tls net/tls: Fix authentication failure in CCM mode 2021-12-08 09:03:29 +01:00
unix af_unix: annote lockless accesses to unix_tot_inflight & gc_in_progress 2022-01-27 10:54:31 +01:00
vmw_vsock vsock: each transport cycles only on its own sockets 2022-03-23 09:13:27 +01:00
wimax genetlink: move to smaller ops wherever possible 2020-10-02 19:11:11 -07:00
wireless cfg80211: don't add non transmitted BSS to 6GHz scanned channels 2022-04-13 21:00:56 +02:00
x25 net/x25: Fix null-ptr-deref caused by x25_disconnect 2022-04-08 14:40:30 +02:00
xdp Revert "xsk: Do not sleep in poll() when need_wakeup set" 2021-12-22 09:30:59 +01:00
xfrm xfrm: fix tunnel model fragmentation behavior 2022-04-08 14:39:47 +02:00
compat.c net: Return the correct errno code 2021-06-18 10:00:06 +02:00
devres.c
Kconfig drop_monitor: Convert to using devlink tracepoint 2020-09-30 18:01:26 -07:00
Makefile
socket.c ethtool: improve compat ioctl handling 2021-09-18 13:40:21 +02:00
sysctl_net.c