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Kuniyuki Iwashima f33b310eac ipv4: fib: Move fib_valid_key_len() to rtm_to_fib_config(). 
[ Upstream commit 254ba7e603 ]

fib_valid_key_len() is called in the beginning of fib_table_insert()
or fib_table_delete() to check if the prefix length is valid.

fib_table_insert() and fib_table_delete() are called from 3 paths

  - ip_rt_ioctl()
  - inet_rtm_newroute() / inet_rtm_delroute()
  - fib_magic()

In the first ioctl() path, rtentry_to_fib_config() checks the prefix
length with bad_mask().  Also, fib_magic() always passes the correct
prefix: 32 or ifa->ifa_prefixlen, which is already validated.

Let's move fib_valid_key_len() to the rtnetlink path, rtm_to_fib_config().

While at it, 2 direct returns in rtm_to_fib_config() are changed to
goto to match other places in the same function

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://patch.msgid.link/20250228042328.96624-12-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2025-05-29 11:02:32 +02:00
..
6lowpan ipv6: eliminate ndisc_ops_is_useropt() 2024-08-12 17:23:57 -07:00
9p 9p/trans_fd: mark concurrent read and writes to p9_conn->err 2025-05-02 07:59:20 +02:00
802 net: 802: LLC+SNAP OID:PID lookup on start of skb data 2025-01-17 13:40:37 +01:00
8021q net: vlan: don't propagate flags on open 2025-04-20 10:15:21 +02:00
appletalk Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2024-05-09 10:01:01 -07:00
atm atm: Fix NULL pointer dereference 2025-04-07 10:08:35 +02:00
ax25 ax25: Fix refcount leak caused by setting SO_BINDTODEVICE sockopt 2025-02-21 14:01:16 +01:00
batman-adv batman-adv: Ignore own maximum aggregation size during RX 2025-03-28 22:03:31 +01:00
bluetooth Bluetooth: Disable SCO support if READ_VOICE_SETTING is unsupported/broken 2025-05-29 11:02:07 +02:00
bpf bpf, test_run: Fix use-after-free issue in eth_skb_pkt_type() 2025-02-27 04:30:18 -08:00
bridge net: bridge: switchdev: do not notify new brentries as changed 2025-04-25 10:47:45 +02:00
caif move asm/unaligned.h to linux/unaligned.h 2024-10-02 17:23:23 -04:00
can can: gw: fix RCU/BH usage in cgw_create_job() 2025-05-18 08:24:48 +02:00
ceph ceph: allocate sparse_ext map only for sparse reads 2025-01-02 10:34:09 +01:00
core net: pktgen: fix mpls maximum labels list parsing 2025-05-29 11:02:31 +02:00
dcb net: dcb: choose correct policy to parse DCB_ATTR_BCN 2023-08-01 21:07:46 -07:00
dccp dccp: Fix memory leak in dccp_feat_change_recv 2024-12-14 20:03:05 +01:00
devlink devlink: fix xa_alloc_cyclic() error handling 2025-03-28 22:03:27 +01:00
dns_resolver Networking changes for 6.8. 2024-01-11 10:07:29 -08:00
dsa net: dsa: avoid refcount warnings when ds->ops->tag_8021q_vlan_del() fails 2025-04-25 10:47:46 +02:00
ethernet netkit: Fix pkt_type override upon netkit pass verdict 2024-05-25 10:48:57 -07:00
ethtool ethtool: cmis_cdb: use correct rpl size in ethtool_cmis_module_poll() 2025-04-25 10:47:43 +02:00
handshake net/handshake: use sockfd_put() helper 2024-08-27 16:09:25 -07:00
hsr net: hsr: Fix PRP duplicate detection 2025-05-29 11:02:20 +02:00
ieee802154 net: ieee802154: do not leave a dangling sk pointer in ieee802154_create() 2024-12-14 20:03:47 +01:00
ife net: sched: ife: fix potential use-after-free 2023-12-15 10:50:18 +00:00
ipv4 ipv4: fib: Move fib_valid_key_len() to rtm_to_fib_config(). 2025-05-29 11:02:32 +02:00
ipv6 ipv6: save dontfrag in cork 2025-05-29 11:02:23 +02:00
iucv s390/iucv: MSG_PEEK causes memory leak in iucv_sock_destruct() 2024-12-05 14:02:31 +01:00
kcm kcm: Serialise kcm_sendmsg() for the same socket. 2024-08-19 18:36:12 -07:00
key xfrm: Add support for per cpu xfrm state handling. 2025-02-08 09:58:00 +01:00
l2tp net/l2tp: fix warning in l2tp_exit_net found by syzbot 2024-12-05 14:02:31 +01:00
l3mdev l3mdev: l3mdev_master_upper_ifindex_by_index_rcu should be using netdev_master_upper_dev_get_rcu 2022-04-15 14:27:24 -07:00
lapb net: lapb: Use list_for_each_entry() to simplify code in lapb_iface.c 2021-06-08 16:31:25 -07:00
llc llc: do not use skb_get() before dev_queue_xmit() 2025-03-13 13:02:05 +01:00
mac80211 wifi: mac80211: fix warning on disconnect during failed ML reconf 2025-05-29 11:02:23 +02:00
mac802154 mac802154: check local interfaces before deleting sdata list 2025-01-23 17:22:54 +01:00
mctp net: mctp: Ensure keys maintain only one ref to corresponding dev 2025-05-22 14:29:40 +02:00
mpls mpls: Handle error of rtnl_register_module(). 2024-10-10 15:39:35 +02:00
mptcp mptcp: only inc MPJoinAckHMacFailure for HMAC failures 2025-04-20 10:15:45 +02:00
ncsi net/ncsi: wait for the last response to Deselect Package before configuring channel 2025-02-17 10:05:41 +01:00
netfilter netfilter: conntrack: Bound nf_conntrack sysctl writes 2025-05-29 11:02:20 +02:00
netlabel netlabel: fix RCU annotation for IPv4 options on socket creation 2024-05-13 14:58:12 -07:00
netlink netlink: fix false positive warning in extack during dumps 2024-12-05 14:02:31 +01:00
netrom netrom: check buffer length before accessing it 2025-01-09 13:33:38 +01:00
nfc NFC: nci: Add bounds checking in nci_hci_create_pipe() 2025-02-17 10:05:40 +01:00
nsh nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment(). 2024-04-26 12:20:01 +02:00
openvswitch openvswitch: Fix unsafe attribute parsing in output_userspace() 2025-05-18 08:24:47 +02:00
packet af_packet: fix vlan_get_protocol_dgram() vs MSG_PEEK 2025-01-09 13:33:42 +01:00
phonet phonet: Handle error of rtnl_register_module(). 2024-10-10 15:39:36 +02:00
psample psample: adjust size if rate_as_probability is set 2024-12-27 14:02:06 +01:00
qrtr net: qrtr: Update packets cloning when broadcasting 2024-09-24 10:48:16 +02:00
rds rds: sysctl: rds_tcp_{rcv,snd}buf: avoid using current->nsproxy 2025-01-17 13:40:47 +01:00
rfkill net: rfkill: gpio: Add check for clk_enable() 2024-12-05 14:01:57 +01:00
rose net: rose: lock the socket in rose_bind() 2025-02-17 10:05:01 +01:00
rxrpc rxrpc: rxperf: Fix missing decoding of terminal magic cookie 2025-03-07 18:25:29 +01:00
sched net_sched: Flush gso_skb list too during ->change() 2025-05-22 14:29:39 +02:00
sctp sctp: detect and prevent references to a freed transport in sendmsg 2025-04-20 10:15:50 +02:00
smc net/smc: use the correct ndev to find pnetid by pnetid table 2025-05-29 11:02:18 +02:00
strparser strparser: Add read_sock callback 2025-02-27 04:30:19 -08:00
sunrpc SUNRPC: rpcbind should never reset the port to the value '0' 2025-05-29 11:02:06 +02:00
switchdev net: switchdev: Convert blocking notification chain to a raw one 2025-03-22 12:54:12 -07:00
tipc tipc: fix NULL pointer dereference in tipc_mon_reinit_self() 2025-05-02 07:59:02 +02:00
tls net/tls: fix kernel panic when alloc_page failed 2025-05-22 14:29:43 +02:00
unix splice: do not checksum AF_UNIX sockets 2024-12-19 18:12:59 +01:00
vmw_vsock vsock: avoid timeout during connect() if the socket is closing 2025-04-10 14:39:34 +02:00
wireless wifi: cfg80211: allow IR in 20 MHz configurations 2025-05-29 11:02:23 +02:00
x25 net: change proto and proto_ops accept type 2024-05-13 18:19:09 -06:00
xdp xsk: Fix race condition in AF_XDP generic RX path 2025-05-09 09:50:38 +02:00
xfrm xfrm_output: Force software GSO only in tunnel mode 2025-03-28 22:03:25 +01:00
compat.c file: stop exposing receive_fd_user() 2023-12-12 14:24:14 +01:00
devres.c net: devres: Correct a grammatical error 2021-06-11 12:55:28 -07:00
Kconfig memory-provider: disable building dmabuf mp on !CONFIG_PAGE_POOL 2024-09-13 11:41:45 -07:00
Kconfig.debug net: make NET_(DEV|NS)_REFCNT_TRACKER depend on NET 2022-09-20 14:23:56 -07:00
Makefile af_unix: Remove CONFIG_UNIX_SCM. 2024-01-31 16:41:16 -08:00
socket.c net: explicitly clear the sk pointer, when pf->create fails 2024-10-07 16:21:59 -07:00
sysctl_net.c sysctl: Remove check for sentinel element in ctl_table arrays 2024-06-13 10:50:52 +02:00