Eric Dumazet 9d13202922 net: give more chances to rcu in netdev_wait_allrefs_any() ... [ Upstream commit cd42ba1c8a ] This came while reviewing commit c4e86b4363 ("net: add two more call_rcu_hurry()"). Paolo asked if adding one synchronize_rcu() would help. While synchronize_rcu() does not help, making sure to call rcu_barrier() before msleep(wait) is definitely helping to make sure lazy call_rcu() are completed. Instead of waiting ~100 seconds in my tests, the ref_tracker splats occurs one time only, and netdev_wait_allrefs_any() latency is reduced to the strict minimum. Ideally we should audit our call_rcu() users to make sure no refcount (or cascading call_rcu()) is held too long, because rcu_barrier() is quite expensive. Fixes: 0e4be9e57e ("net: use exponential backoff in netdev_wait_allrefs") Signed-off-by: Eric Dumazet <edumazet@google.com> Link: https://lore.kernel.org/all/28bbf698-befb-42f6-b561-851c67f464aa@kernel.org/T/#m76d73ed6b03cd930778ac4d20a777f22a08d6824 Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-06-16 13:32:07 +02:00
..
6lowpan
9p	9p/net: fix possible memory leak in p9_check_errors()	2024-01-05 15:12:29 +01:00
802	mrp: introduce active flags to prevent UAF when applicant uninit	2023-01-14 10:16:18 +01:00
8021q	vlan: skip nested type that is not IFLA_VLAN_QOS_MAPPING	2024-02-23 08:41:55 +01:00
appletalk	appletalk: Fix Use-After-Free in atalk_ioctl	2023-12-20 15:44:29 +01:00
atm	atm: Fix Use-After-Free in do_vcc_ioctl	2023-12-20 15:44:28 +01:00
ax25	net: ax25: Fix deadlock caused by skb_recv_datagram in ax25_recvmsg	2022-06-22 14:13:17 +02:00
batman-adv	batman-adv: Avoid infinite loop trying to resize local TT	2024-05-02 16:23:33 +02:00
bluetooth	Bluetooth: l2cap: fix null-ptr-deref in l2cap_chan_timeout	2024-05-17 11:48:06 +02:00
bpf	bpf: Move skb->len == 0 checks into __bpf_redirect	2023-01-14 10:15:31 +01:00
bpfilter
bridge	net: bridge: fix corrupted ethernet header on multicast-to-unicast	2024-05-17 11:48:07 +02:00
caif	net: caif: Fix use-after-free in cfusbl_device_notify()	2023-03-17 08:45:11 +01:00
can	can: j1939: Fix UAF in j1939_sk_match_filter during setsockopt(SO_J1939_FILTER)	2024-02-23 08:42:29 +01:00
ceph	libceph: use kernel_connect()	2023-10-25 11:54:15 +02:00
core	net: give more chances to rcu in netdev_wait_allrefs_any()	2024-06-16 13:32:07 +02:00
dcb	net: dcb: choose correct policy to parse DCB_ATTR_BCN	2023-08-11 11:57:50 +02:00
dccp	dccp/tcp: Call security_inet_conn_request() after setting IPv6 addresses.	2023-11-20 11:06:55 +01:00
decnet	Remove DECnet support from kernel	2023-06-21 15:45:38 +02:00
dns_resolver	keys, dns: Fix size check of V1 server-list header	2024-01-25 14:37:50 -08:00
dsa	net: dsa: tag_sja1105: fix MAC DA patching from meta frames	2023-07-27 08:44:10 +02:00
ethernet	ethernet: Add helper for assigning packet type when dest address does not match device address	2024-05-02 16:23:44 +02:00
ethtool	ethtool: netlink: Add missing ethnl_ops_begin/complete	2024-01-25 14:37:56 -08:00
hsr	hsr: Handle failures in module init	2024-03-26 18:22:03 -04:00
ieee802154	net: ieee802154: fix error return code in dgram_bind()	2022-11-03 23:57:51 +09:00
ife	net: sched: ife: fix potential use-after-free	2024-01-05 15:12:24 +01:00
ipv4	tcp: avoid premature drops in tcp_add_backlog()	2024-06-16 13:32:07 +02:00
ipv6	udp: Avoid call to compute_score on multiple sites	2024-06-16 13:32:06 +02:00
iucv	net/iucv: fix the allocation size of iucv_path_table array	2024-03-26 18:21:46 -04:00
kcm	net: kcm: fix incorrect parameter validation in the kcm_getsockopt) function	2024-03-26 18:21:54 -04:00
key	net: af_key: fix sadb_x_filter validation	2023-08-26 15:26:51 +02:00
l2tp	net l2tp: drop flow hash on forward	2024-05-17 11:48:00 +02:00
l3mdev
lapb
llc	llc: call sock_orphan() at release time	2024-02-23 08:42:17 +01:00
mac80211	kcov: Remove kcov include from sched.h and move it to its users.	2024-05-17 11:48:07 +02:00
mac802154	mac802154: fix llsec key resources release in mac802154_llsec_key_del	2024-04-13 12:58:25 +02:00
mpls	net: mpls: fix stale pointer if allocation fails during device rename	2023-02-22 12:55:58 +01:00
mptcp	mptcp: ensure snd_nxt is properly initialized on connect	2024-05-25 16:19:06 +02:00
ncsi	net/ncsi: Fix netlink major/minor version numbers	2024-01-25 14:37:44 -08:00
netfilter	netfilter: nf_tables: honor table dormant flag from netdev release event path	2024-05-02 16:23:42 +02:00
netlabel	calipso: fix memory leak in netlbl_calipso_add_pass()	2024-01-25 14:37:40 -08:00
netlink	netlink: annotate lockless accesses to nlk->max_recvmsg_len	2024-05-25 16:19:06 +02:00
netrom	netrom: Fix data-races around sysctl_net_busy_read	2024-03-15 10:48:17 -04:00
nfc	nfc: nci: Fix uninit-value in nci_dev_up and nci_ntf_packet	2024-04-13 12:59:14 +02:00
nsh	nsh: Restore skb->{protocol,data,mac_header} for outer header in nsh_gso_segment().	2024-05-17 11:48:00 +02:00
openvswitch	net: openvswitch: Fix Use-After-Free in ovs_ct_exit	2024-05-02 16:23:41 +02:00
packet	packet: annotate data-races around ignore_outgoing	2024-03-26 18:22:03 -04:00
phonet	phonet: fix rtm_phonet_notify() skb allocation	2024-05-17 11:48:07 +02:00
psample	psample: Require 'CAP_NET_ADMIN' when joining "packets" group	2023-12-13 18:27:06 +01:00
qrtr	net: qrtr: ns: Return 0 if server port is not present	2024-01-25 14:37:38 -08:00
rds	net/rds: fix possible cp null dereference	2024-04-13 12:59:19 +02:00
rfkill	net: rfkill: gpio: set GPIO direction	2024-01-05 15:12:28 +01:00
rose	net/rose: fix races in rose_kill_by_device()	2024-01-05 15:12:24 +01:00
rxrpc	rxrpc: Fix response to PING RESPONSE ACKs to a dead call	2024-02-23 08:42:20 +01:00
sched	net/sched: act_skbmod: prevent kernel-infoleak	2024-04-13 12:59:26 +02:00
sctp	sctp: update hb timer immediately after users change hb_interval	2023-10-10 21:53:39 +02:00
smc	net/smc: reduce rtnl pressure in smc_pnet_create_pnetids_list()	2024-04-13 12:59:43 +02:00
strparser
sunrpc	sunrpc: add a struct rpc_stats arg to rpc_create_args	2024-05-17 11:47:58 +02:00
switchdev
tipc	tipc: fix UAF in error path	2024-05-17 11:48:10 +02:00
tls	tls: stop recv() if initial process_rx_list gave us non-DATA	2024-03-01 13:16:51 +01:00
unix	af_unix: Suppress false-positive lockdep splat for spin_lock() in __unix_gc().	2024-05-02 16:23:43 +02:00
vmw_vsock	virtio/vsock: fix logic which reduces credit update messages	2024-01-25 14:37:45 -08:00
wimax
wireless	wifi: cfg80211: fix the order of arguments for trace events of the tx_rx_evt class	2024-06-16 13:32:00 +02:00
x25	net/x25: fix incorrect parameter validation in the x25_getsockopt() function	2024-03-26 18:21:54 -04:00
xdp	xsk: validate user input for XDP_{UMEM|COMPLETION}_FILL_RING	2024-05-02 16:23:33 +02:00
xfrm	xfrm: Preserve vlan tags for transport mode software GRO	2024-05-17 11:48:06 +02:00
compat.c
devres.c
Kconfig	Remove DECnet support from kernel	2023-06-21 15:45:38 +02:00
Makefile	Remove DECnet support from kernel	2023-06-21 15:45:38 +02:00
socket.c	net: Save and restore msg_namelen in sock_sendmsg	2024-01-15 18:48:04 +01:00
sysctl_net.c