Breno Leitao a130e7da73 netpoll: Fix race condition in netpoll_owner_active ... [ Upstream commit c2e6a872bd ] KCSAN detected a race condition in netpoll: BUG: KCSAN: data-race in net_rx_action / netpoll_send_skb write (marked) to 0xffff8881164168b0 of 4 bytes by interrupt on cpu 10: net_rx_action (./include/linux/netpoll.h:90 net/core/dev.c:6712 net/core/dev.c:6822) <snip> read to 0xffff8881164168b0 of 4 bytes by task 1 on cpu 2: netpoll_send_skb (net/core/netpoll.c:319 net/core/netpoll.c:345 net/core/netpoll.c:393) netpoll_send_udp (net/core/netpoll.c:?) <snip> value changed: 0x0000000a -> 0xffffffff This happens because netpoll_owner_active() needs to check if the current CPU is the owner of the lock, touching napi->poll_owner non atomically. The ->poll_owner field contains the current CPU holding the lock. Use an atomic read to check if the poll owner is the current CPU. Signed-off-by: Breno Leitao <leitao@debian.org> Link: https://lore.kernel.org/r/20240429100437.3487432-1-leitao@debian.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-06-27 13:52:14 +02:00
..
6lowpan
9p	net/9p: fix uninit-value in p9_client_rpc()	2024-06-16 13:51:05 +02:00
802
8021q	net: gro: fix udp bad offset in socket lookup by adding {inner_}network_offset to napi_gro_cb	2024-05-02 11:02:48 +02:00
appletalk	appletalk: Improve handling of broadcast packets	2024-05-08 12:17:19 +01:00
atm	inet: introduce dst_rtable() helper	2024-06-12 11:39:55 +02:00
ax25	ax25: Replace kfree() in ax25_dev_free() with ax25_dev_put()	2024-06-21 14:40:03 +02:00
batman-adv	batman-adv: bypass empty buckets in batadv_purge_orig_ref()	2024-06-27 13:52:13 +02:00
bluetooth	Bluetooth: fix connection setup in l2cap_connect	2024-06-21 14:40:22 +02:00
bpf	bpf: Set run context for rawtp test_run callback	2024-06-21 14:40:05 +02:00
bridge	net: bridge: mst: fix suspicious rcu usage in br_mst_set_state	2024-06-21 14:40:25 +02:00
caif
can
ceph	libceph: init the cursor when preparing sparse read in msgr2	2024-03-06 12:43:01 +01:00
core	netpoll: Fix race condition in netpoll_owner_active	2024-06-27 13:52:14 +02:00
dcb
dccp	Kbuild updates for v6.9	2024-03-21 14:41:00 -07:00
devlink	devlink: use kvzalloc() to allocate devlink instance resources	2024-06-27 13:52:12 +02:00
dns_resolver
dsa	net: dsa: Leverage core stats allocator	2024-03-07 20:37:13 -08:00
ethernet	netkit: Fix pkt_type override upon netkit pass verdict	2024-06-12 11:39:48 +02:00
ethtool	net: ethtool: fix the error condition in ethtool_get_phy_stats_ethtool()	2024-06-21 14:40:10 +02:00
handshake
hsr	hsr: Simplify code for announcing HSR nodes timer setup	2024-05-08 18:56:30 -07:00
ieee802154	Merge tag 'ieee802154-for-net-next-2024-03-07' of git://git.kernel.org/pub/scm/linux/kernel/git/wpan/wpan-next	2024-03-08 20:35:33 -08:00
ife
ipv4	tcp: use signed arithmetic in tcp_rtx_probe0_timed_out()	2024-06-21 14:40:23 +02:00
ipv6	net/ipv6: Fix the RT cache flush via sysctl using a previous delay	2024-06-21 14:40:25 +02:00
iucv	more s390 updates for 6.9 merge window	2024-03-19 11:38:27 -07:00
kcm	net: kcm: fix incorrect parameter validation in the kcm_getsockopt) function	2024-03-11 09:53:22 +00:00
key
l2tp	inet: introduce dst_rtable() helper	2024-06-12 11:39:55 +02:00
l3mdev
lapb
llc
mac80211	wifi: mac80211: correctly parse Spatial Reuse Parameter Set element	2024-06-21 14:40:02 +02:00
mac802154	mac802154: fix llsec key resources release in mac802154_llsec_key_del	2024-03-06 21:01:26 +01:00
mctp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2024-02-29 14:24:56 -08:00
mpls	inet: introduce dst_rtable() helper	2024-06-12 11:39:55 +02:00
mptcp	mptcp: pm: update add_addr counters after connect	2024-06-21 14:40:30 +02:00
ncsi	net/ncsi: Fix the multi thread manner of NCSI driver	2024-06-21 14:40:03 +02:00
netfilter	netfilter: ipset: Fix race between namespace cleanup and gc in the list:set type	2024-06-21 14:40:23 +02:00
netlabel	netlabel: remove impossible return value in netlbl_bitmap_walk	2024-02-28 19:37:34 -08:00
netlink	net/netlink: Add getsockopt support for NETLINK_LISTEN_ALL_NSID	2024-03-11 15:48:34 -07:00
netrom	netrom: fix possible dead-lock in nr_rt_ioctl()	2024-05-30 09:45:02 +02:00
nfc	nfc: nci: Fix handling of zero-length payload packets in nci_rx_work()	2024-06-12 11:39:43 +02:00
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: Set the skbuff pkt_type for proper pmtud support.	2024-06-12 11:39:41 +02:00
packet	af_packet: avoid a false positive warning in packet_setsockopt()	2024-06-27 13:52:13 +02:00
phonet	phonet: fix rtm_phonet_notify() skb allocation	2024-05-06 18:30:00 -07:00
psample
qrtr	net: qrtr: ns: Fix module refcnt	2024-05-30 09:45:02 +02:00
rds	net/rds: fix possible cp null dereference	2024-03-29 12:04:09 -07:00
rfkill
rose
rxrpc	rxrpc: Only transmit one ACK per jumbo packet received	2024-05-08 08:05:03 -07:00
sched	net/sched: fix false lockdep warning on qdisc root lock	2024-06-27 13:52:14 +02:00
sctp	inet: introduce dst_rtable() helper	2024-06-12 11:39:55 +02:00
smc	net/smc: avoid overwriting when adjusting sock bufsizes	2024-06-21 14:40:05 +02:00
strparser
sunrpc	SUNRPC: return proper error from gss_wrap_req_priv	2024-06-21 14:40:17 +02:00
switchdev
tipc	inet: introduce dst_rtable() helper	2024-06-12 11:39:55 +02:00
tls	tls: fix missing memory barrier in tls_init	2024-06-12 11:39:43 +02:00
unix	af_unix: Read with MSG_PEEK loops if the first unread byte is OOB	2024-06-21 14:40:26 +02:00
vmw_vsock	vsock/virtio: fix packet delivery to tap device	2024-04-02 18:00:24 -07:00
wireless	wifi: cfg80211: validate HE operation element parsing	2024-06-21 14:40:31 +02:00
x25	net/x25: fix incorrect parameter validation in the x25_getsockopt() function	2024-03-11 09:53:22 +00:00
xdp	Revert "xsk: Support redirect to any socket bound to the same umem"	2024-06-16 13:51:10 +02:00
xfrm	net: fix __dst_negative_advice() race	2024-06-12 11:39:55 +02:00
compat.c
devres.c
Kconfig
Kconfig.debug
Makefile
socket.c	net: remove {revc,send}msg_copy_msghdr() from exports	2024-03-14 16:48:53 -07:00
sysctl_net.c