Yan Zhai 29b22badb7 lwt: Fix return values of BPF xmit ops ... BPF encap ops can return different types of positive values, such like NET_RX_DROP, NET_XMIT_CN, NETDEV_TX_BUSY, and so on, from function skb_do_redirect and bpf_lwt_xmit_reroute. At the xmit hook, such return values would be treated implicitly as LWTUNNEL_XMIT_CONTINUE in ip(6)_finish_output2. When this happens, skbs that have been freed would continue to the neighbor subsystem, causing use-after-free bug and kernel crashes. To fix the incorrect behavior, skb_do_redirect return values can be simply discarded, the same as tc-egress behavior. On the other hand, bpf_lwt_xmit_reroute returns useful errors to local senders, e.g. PMTU information. Thus convert its return values to avoid the conflict with LWTUNNEL_XMIT_CONTINUE. Fixes: 3a0af8fd61 ("bpf: BPF for lightweight tunnel infrastructure") Reported-by: Jordan Griege <jgriege@cloudflare.com> Suggested-by: Martin KaFai Lau <martin.lau@linux.dev> Suggested-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: Yan Zhai <yan@cloudflare.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/0d2b878186cfe215fec6b45769c1cd0591d3628d.1692326837.git.yan@cloudflare.com		2023-08-18 16:05:26 +02:00
..
6lowpan
9p	net: annotate data-races around sock->ops	2023-08-09 15:32:43 -07:00
802
8021q	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-08-10 14:10:53 -07:00
appletalk	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
atm	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
ax25	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
batman-adv	batman-adv: Broken sync while rescheduling delayed work	2023-05-26 23:14:49 +02:00
bluetooth	Bluetooth: hci_conn: avoid checking uninitialized CIG/CIS ids	2023-08-11 11:57:54 -07:00
bpf	page_pool: split types and declarations from page_pool.h	2023-08-07 13:05:19 -07:00
bpfilter	net: Use umd_cleanup_helper()	2023-05-31 13:06:57 +02:00
bridge	bridge: Remove unused declaration br_multicast_set_hash_max()	2023-07-27 17:11:29 -07:00
caif	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
can	net: annotate data-races around sk->sk_mark	2023-07-29 18:13:41 +01:00
ceph	libceph: fix potential hang in ceph_osdc_notify()	2023-08-02 09:07:34 +02:00
core	lwt: Fix return values of BPF xmit ops	2023-08-18 16:05:26 +02:00
dcb	net: dcb: choose correct policy to parse DCB_ATTR_BCN	2023-08-01 21:07:46 -07:00
dccp	inet: move inet->recverr to inet->inet_flags	2023-08-16 11:09:17 +01:00
devlink	genetlink: use attrs from struct genl_info	2023-08-15 15:00:45 -07:00
dns_resolver
dsa	net: dsa: mark parsed interface mode for legacy switch drivers	2023-08-09 13:08:09 -07:00
ethernet
ethtool	ethtool: netlink: always pass genl_info to .prepare_data	2023-08-15 15:01:03 -07:00
handshake	net/handshake: Trace events for TLS Alert helpers	2023-07-28 14:07:59 -07:00
hsr	net/hsr: Remove unused function declarations	2023-07-31 20:11:47 -07:00
ieee802154	genetlink: use attrs from struct genl_info	2023-08-15 15:00:45 -07:00
ife
ipv4	inet: implement lockless IP_MINTTL	2023-08-16 11:09:18 +01:00
ipv6	net/ipv6: Remove expired routes with a separated list of routes.	2023-08-16 12:26:43 +01:00
iucv
kcm	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
key	ipsec-next-2023-07-19	2023-07-19 20:36:16 -07:00
l2tp	inet: introduce inet->inet_flags	2023-08-16 11:09:16 +01:00
l3mdev
lapb
llc	net/llc/llc_conn.c: fix 4 instances of -Wmissing-variable-declarations	2023-08-09 15:34:28 -07:00
mac80211	- New Drivers	2023-07-03 11:26:05 -07:00
mac802154	Core WPAN changes:	2023-06-24 15:41:46 -07:00
mctp	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
mpls	net: move gso declarations and functions to their own files	2023-06-10 00:11:41 -07:00
mptcp	bpf-next-for-netdev	2023-08-16 20:09:43 -07:00
ncsi	genetlink: make genl_info->nlhdr const	2023-08-15 14:54:44 -07:00
netfilter	inet: move inet->nodefrag to inet->inet_flags	2023-08-16 11:09:17 +01:00
netlabel	netlabel: Remove unused declaration netlbl_cipsov4_doi_free()	2023-08-02 12:28:22 -07:00
netlink	genetlink: add a family pointer to struct genl_info	2023-08-15 15:01:03 -07:00
netrom	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
nfc	genetlink: use attrs from struct genl_info	2023-08-15 15:00:45 -07:00
nsh	net: move gso declarations and functions to their own files	2023-06-10 00:11:41 -07:00
openvswitch	genetlink: remove userhdr from struct genl_info	2023-08-15 14:54:44 -07:00
packet	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-08-10 14:10:53 -07:00
phonet	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
psample
qrtr	net: qrtr: Handle IPCR control port format of older targets	2023-07-17 09:02:30 +01:00
rds	net/rds: Remove unused function declarations	2023-08-13 12:25:42 +01:00
rfkill
rose	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
rxrpc	Networking changes for 6.5.	2023-06-28 16:43:10 -07:00
sched	netem: use seeded PRNG for correlated loss events	2023-08-17 19:15:06 -07:00
sctp	inet: move inet->mc_loop to inet->inet_frags	2023-08-16 11:09:17 +01:00
smc	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-08-10 14:10:53 -07:00
strparser
sunrpc	SUNRPC: Use new helpers to handle TLS Alerts	2023-07-28 14:07:59 -07:00
switchdev	net: switchdev: Add a helper to replay objects on a bridge port	2023-07-21 08:54:03 +01:00
tipc	genetlink: use attrs from struct genl_info	2023-08-15 15:00:45 -07:00
tls	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-08-10 14:10:53 -07:00
unix	net: annotate data-races around sock->ops	2023-08-09 15:32:43 -07:00
vmw_vsock	vsock: Remove unused function declarations	2023-07-31 14:41:08 -07:00
wireless	wifi: nl80211: fix integer overflow in nl80211_parse_mbssid_elems()	2023-08-09 14:43:35 +02:00
x25	sock: Remove ->sendpage*() in favour of sendmsg(MSG_SPLICE_PAGES)	2023-06-24 15:50:13 -07:00
xdp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-08-10 14:10:53 -07:00
xfrm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2023-08-03 14:34:37 -07:00
compat.c
devres.c
Kconfig	bpf: Add fd-based tcx multi-prog infra with link support	2023-07-19 10:07:27 -07:00
Kconfig.debug
Makefile
socket.c	bpf: Add update_socket_protocol hook	2023-08-16 10:22:16 -07:00
sysctl_net.c