e.kubanski a1356ac774 xsk: Fix race condition in AF_XDP generic RX path ... Move rx_lock from xsk_socket to xsk_buff_pool. Fix synchronization for shared umem mode in generic RX path where multiple sockets share single xsk_buff_pool. RX queue is exclusive to xsk_socket, while FILL queue can be shared between multiple sockets. This could result in race condition where two CPU cores access RX path of two different sockets sharing the same umem. Protect both queues by acquiring spinlock in shared xsk_buff_pool. Lock contention may be minimized in the future by some per-thread FQ buffering. It's safe and necessary to move spin_lock_bh(rx_lock) after xsk_rcv_check(): * xs->pool and spinlock_init is synchronized by xsk_bind() -> xsk_is_bound() memory barriers. * xsk_rcv_check() may return true at the moment of xsk_release() or xsk_unbind_dev(), however this will not cause any data races or race conditions. xsk_unbind_dev() removes xdp socket from all maps and waits for completion of all outstanding rx operations. Packets in RX path will either complete safely or drop. Signed-off-by: Eryk Kubanski <e.kubanski@partner.samsung.com> Fixes: bf0bdd1343 ("xdp: fix race on generic receive path") Acked-by: Magnus Karlsson <magnus.karlsson@intel.com> Link: https://patch.msgid.link/20250416101908.10919-1-e.kubanski@partner.samsung.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2025-04-24 17:11:33 -07:00
..
6lowpan
9p	9p: Use hashtable.h for hash_errmap	2025-03-23 06:20:48 +09:00
802	net: 802: LLC+SNAP OID:PID lookup on start of skb data	2025-01-04 08:06:24 -08:00
8021q	net: vlan: don't propagate flags on open	2025-03-20 09:57:37 +01:00
appletalk	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
atm	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
ax25	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
batman-adv	batman-adv: Fix double-hold of meshif when getting enabled	2025-04-15 17:56:47 -07:00
bluetooth	Bluetooth: l2cap: Process valid commands in too long frame	2025-04-16 16:50:25 -04:00
bpf	bpf, test_run: Fix use-after-free issue in eth_skb_pkt_type()	2025-01-29 08:51:51 -08:00
bridge	net: bridge: switchdev: do not notify new brentries as changed	2025-04-16 18:11:39 -07:00
caif	rtnetlink: Pack newlink() params into struct	2025-02-21 15:28:02 -08:00
can	can: fix missing decrement of j1939_proto.inuse_idx	2025-04-15 12:18:07 +02:00
ceph	lib/crc: remove CONFIG_LIBCRC32C	2025-04-04 11:31:42 -07:00
core	net: lwtunnel: disable BHs when required	2025-04-22 15:37:01 +02:00
dcb
dccp	tcp/dccp: remove icsk->icsk_ack.timeout	2025-03-25 10:34:33 -07:00
devlink	devlink: fix xa_alloc_cyclic() error handling	2025-03-19 09:57:36 +00:00
dns_resolver
dsa	net: dsa: avoid refcount warnings when ds->ops->tag_8021q_vlan_del() fails	2025-04-16 18:14:44 -07:00
ethernet
ethtool	ethtool: cmis_cdb: use correct rpl size in ethtool_cmis_module_poll()	2025-04-11 18:41:19 -07:00
handshake	module: Convert symbol namespace to string literal	2024-12-02 11:34:44 -08:00
hsr	net: hold instance lock during NETDEV_CHANGE	2025-04-07 11:13:39 -07:00
ieee802154	inet: frags: save a pair of atomic operations in reassembly	2025-03-18 13:18:36 +01:00
ife
ipv4	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
ipv6	ipv6: add exception routes to GC list in rt6_insert_exception	2025-04-10 20:09:05 -07:00
iucv	s390: Convert MACHINE_IS_[LPAR|VM|KVM], etc, machine_is_[lpar|vm|kvm]()	2025-03-04 17:18:07 +01:00
kcm
key
l2tp	net: move misc netdev_lock flavors to a separate header	2025-03-08 09:06:50 -08:00
l3mdev	net: fib_rules: Fix iif / oif matching on L3 master device	2025-04-15 17:54:56 -07:00
lapb	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
llc	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
mac80211	wifi: mac80211: restore monitor for outgoing frames	2025-04-23 14:44:22 +02:00
mac802154	mac802154: Switch to use hrtimer_setup()	2025-02-18 10:35:44 +01:00
mctp	net: mctp: Set SOCK_RCU_FREE	2025-04-11 18:42:34 -07:00
mpls	percpu: use TYPEOF_UNQUAL() in variable declarations	2025-03-16 22:05:53 -07:00
mptcp	mptcp: pm: Defer freeing of MPTCP userspace path manager entries	2025-04-23 16:27:58 -07:00
ncsi	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
netfilter	netfilter: conntrack: fix erronous removal of offload bit	2025-04-17 11:14:22 +02:00
netlabel	net: corrections for security_secid_to_secctx returns	2025-01-04 22:11:22 -05:00
netlink	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2025-02-27 10:20:58 -08:00
netrom	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
nfc	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
nsh
openvswitch	net: openvswitch: fix nested key length validation in the set() action	2025-04-14 16:15:38 -07:00
packet	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
phonet
psample	psample: adjust size if rate_as_probability is set	2024-12-18 19:23:04 -08:00
qrtr
rds	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2025-02-27 10:20:58 -08:00
rfkill	net: rfkill: gpio: allow booting in blocked state	2025-02-11 11:55:55 +01:00
rose	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
rxrpc	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
sched	net_sched: hfsc: Fix a potential UAF in hfsc_dequeue() too	2025-04-23 17:16:50 -07:00
sctp	Including fixes from netfilter.	2025-04-10 08:52:18 -07:00
shaper	net: add netdev_lock() / netdev_unlock() helpers	2025-01-15 19:13:33 -08:00
smc	smc: Fix lockdep false-positive for IPPROTO_SMC.	2025-04-11 14:14:26 -07:00
strparser	strparser: Add read_sock callback	2025-01-29 13:32:08 -08:00
sunrpc	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
switchdev	net: switchdev: Convert blocking notification chain to a raw one	2025-03-11 11:30:28 +01:00
tipc	tipc: fix NULL pointer dereference in tipc_mon_reinit_self()	2025-04-22 18:43:57 -07:00
tls	net: tls: explicitly disallow disconnect	2025-04-08 11:38:49 +02:00
unix	unix: fix up for "apparmor: add fine grained af_unix mediation"	2025-03-26 09:31:18 -07:00
vmw_vsock	vsock: avoid timeout during connect() if the socket is closing	2025-04-02 17:19:30 -07:00
wireless	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
x25	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
xdp	xsk: Fix race condition in AF_XDP generic RX path	2025-04-24 17:11:33 -07:00
xfrm	treewide: Switch/rename to timer_delete[_sync]()	2025-04-05 10:30:12 +02:00
compat.c
devres.c
Kconfig
Kconfig.debug
Makefile
socket.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2025-03-26 09:32:10 -07:00
sysctl_net.c