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linux/net/ipv6
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Eric Dumazet 58894600b5 ipv6: np->rxpmtu race annotation 
[ Upstream commit 9fba1eb39e ]

Add READ_ONCE() annotations because np->rxpmtu can be changed
while udpv6_recvmsg() and rawv6_recvmsg() read it.

Since this is a very rarely used feature, and that udpv6_recvmsg()
and rawv6_recvmsg() read np->rxopt anyway, change the test order
so that np->rxpmtu does not need to be in a hot cache line.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Link: https://patch.msgid.link/20250916160951.541279-4-edumazet@google.com
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2025-12-03 12:45:13 +01:00
..
ila
net: ipv6: fix missing dst ref drop in ila lwtunnel
2025-03-13 12:43:30 +01:00
netfilter
netfilter: nf_tables: nft_fib_ipv6: fix VRF ipv4/ipv6 result discrepancy
2025-06-27 11:02:47 +01:00
addrconf_core.c
ipv6: Ensure natural alignment of const ipv6 loopback and router addresses
2024-02-23 08:25:04 +01:00
addrconf.c
ipv6: fix omitted netlink attributes when using RTEXT_FILTER_SKIP_STATS
2025-04-10 14:29:43 +02:00
addrlabel.c
ipv6: addrlabel: fix infoleak when sending struct ifaddrlblmsg to network
2022-11-25 17:42:05 +01:00
af_inet6.c
net: inet6: do not leave a dangling sk pointer in inet6_create()
2024-12-14 19:44:51 +01:00
ah6.c
net: ipv6: fix field-spanning memcpy warning in AH output
2025-12-03 12:45:09 +01:00
anycast.c
ipv6: fix memory leaks on IPV6_ADDRFORM path
2020-08-11 15:33:39 +02:00
calipso.c
calipso: Fix null-ptr-deref in calipso_req_{set,del}attr().
2025-06-27 11:02:57 +01:00
datagram.c
ipv6: Fix datagram socket connection with DSCP.
2023-02-22 12:50:41 +01:00
esp6_offload.c
xfrm: Linearize the skb after offloading if needed.
2023-06-28 10:18:38 +02:00
esp6.c
net: ipv6: fix return value check in esp_remove_trailer
2023-10-25 11:53:21 +02:00
exthdrs_core.c
ipv6: Fix out-of-bounds access in ipv6_find_tlv()
2023-05-30 12:44:10 +01:00
exthdrs_offload.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
exthdrs.c
ipv6: fix out-of-bound access in ip6_parse_tlv()
2021-07-14 16:53:33 +02:00
fib6_notifier.c
…
fib6_rules.c
ip: fib_rules: Fetch net from fib_rule in fib[46]_rule_configure().
2025-06-04 14:32:34 +02:00
fou6.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
icmp.c
icmp6: Fix null-ptr-deref of ip6_null_entry->rt6i_idev in icmp6_dev().
2023-07-27 08:37:31 +02:00
inet6_connection_sock.c
net: add bool confirm_neigh parameter for dst_ops.update_pmtu
2020-01-04 19:18:58 +01:00
inet6_hashtables.c
secure_seq: use the 64 bits of the siphash for port offset calculation
2022-06-06 08:33:49 +02:00
ip6_checksum.c
net: udp: fix handling of CHECKSUM_COMPLETE packets
2018-10-24 14:18:16 -07:00
ip6_fib.c
ipv6: fix possible race in __fib6_drop_pcpu_from()
2024-07-05 09:08:13 +02:00
ip6_flowlabel.c
treewide: Remove uninitialized_var() usage
2023-06-09 10:29:01 +02:00
ip6_gre.c
erspan: make sure erspan_base_hdr is present in skb->head
2024-04-13 12:51:36 +02:00
ip6_icmp.c
icmp: fix icmp_ndo_send address translation for reply direction
2025-09-09 18:43:57 +02:00
ip6_input.c
tcp/udp: Make early_demux back namespacified.
2022-11-10 17:57:55 +01:00
ip6_offload.c
ipv6: reject malicious packets in ipv6_gso_segment()
2025-08-28 16:21:22 +02:00
ip6_offload.h
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
ip6_output.c
ipv6: prevent possible UAF in ip6_xmit()
2025-01-09 13:23:33 +01:00
ip6_tunnel.c
net/ip6_tunnel: Prevent perpetual tunnel growth
2025-10-29 13:59:56 +01:00
ip6_udp_tunnel.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
ip6_vti.c
ip6_vti: fix slab-use-after-free in decode_session6
2023-08-30 16:27:16 +02:00
ip6mr.c
ipmr: convert /proc handlers to rcu_read_lock()
2024-12-14 19:44:33 +01:00
ipcomp6.c
xfrm: remove type and offload_type map from xfrm_state_afinfo
2019-06-06 08:34:50 +02:00
ipv6_sockglue.c
tcp: Fix data races around icsk->icsk_af_ops.
2024-07-05 09:08:32 +02:00
Kconfig
net: ipv6: fix kconfig dependency warning for IPV6_SEG6_HMAC
2020-09-26 18:03:13 +02:00
Makefile
xfrm: make xfrm modes builtin
2019-04-08 09:15:17 +02:00
mcast_snoop.c
net: bridge: mcast: fix broken length + header check for MRDv6 Adv.
2021-05-14 09:44:32 +02:00
mcast.c
mld: fix panic in mld_newpack()
2021-06-03 08:59:14 +02:00
mip6.c
xfrm: remove type and offload_type map from xfrm_state_afinfo
2019-06-06 08:34:50 +02:00
ndisc.c
ndisc: extend RCU protection in ndisc_send_skb()
2025-03-13 12:43:18 +01:00
netfilter.c
netfilter: bridge: Move specific fragmented packet to slow_path instead of dropping it
2025-06-27 11:02:46 +01:00
output_core.c
ipv6: use prandom_u32() for ID generation
2021-07-19 08:53:09 +02:00
ping.c
ping6: Fix send to link-local addresses with VRF.
2023-06-21 15:44:11 +02:00
proc.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2019-06-07 11:00:14 -07:00
protocol.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
raw.c
ipv6: np->rxpmtu race annotation
2025-12-03 12:45:13 +01:00
reassembly.c
ipv6: record frag_max_size in atomic fragments in input path
2021-06-03 08:59:15 +02:00
route.c
net: ipv6: Discard next-hop MTU less than minimum link MTU
2025-07-17 18:25:06 +02:00
seg6_hmac.c
ipv6: sr: validate HMAC algorithm ID in seg6_hmac_info_add
2025-08-28 16:21:37 +02:00
seg6_iptunnel.c
ipv6: sr: block BH in seg6_output_core() and seg6_input_core()
2024-07-05 09:08:11 +02:00
seg6_local.c
seg6: fix skb checksum in SRv6 End.B6 and End.B6.Encaps behaviors
2022-07-21 20:59:23 +02:00
seg6.c
ipv6: sr: fix invalid unregister error path
2024-06-16 13:28:38 +02:00
sit.c
sit: update dev->needed_headroom in ipip6_tunnel_bind_dev()
2023-05-17 11:35:58 +02:00
syncookies.c
dccp/tcp: Call security_inet_conn_request() after setting IPv6 addresses.
2023-11-20 10:30:15 +01:00
sysctl_net_ipv6.c
ipv6: Fix sysctl max for fib_multipath_hash_policy
2020-09-12 14:18:55 +02:00
tcp_ipv6.c
net: fix data-races around sk->sk_forward_alloc
2025-02-01 18:18:52 +01:00
tcpv6_offload.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
tunnel6.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00
udp_impl.h
tcp/udp: Call inet6_destroy_sock() in IPv6 sk->sk_destruct().
2023-04-26 11:24:05 +02:00
udp_offload.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
udp.c
ipv6: np->rxpmtu race annotation
2025-12-03 12:45:13 +01:00
udplite.c
udplite: Fix NULL pointer dereference in __sk_mem_raise_allocated().
2023-05-30 12:44:09 +01:00
xfrm6_input.c
xfrm: Preserve vlan tags for transport mode software GRO
2024-05-17 11:43:53 +02:00
xfrm6_output.c
xfrm: fix tunnel model fragmentation behavior
2022-04-15 14:17:56 +02:00
xfrm6_policy.c
xfrm6: check ip6_dst_idev() return value in xfrm6_get_saddr()
2024-07-05 09:08:22 +02:00
xfrm6_protocol.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
xfrm6_state.c
xfrm: remove eth_proto value from xfrm_state_afinfo
2019-06-06 08:34:50 +02:00
xfrm6_tunnel.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 13
2019-05-21 11:28:45 +02:00