Jakub Kicinski 9f313bcb3b net: disable netpoll on fresh napis ... [ Upstream commit 96e97bc07e ] napi_disable() makes sure to set the NAPI_STATE_NPSVC bit to prevent netpoll from accessing rings before init is complete. However, the same is not done for fresh napi instances in netif_napi_add(), even though we expect NAPI instances to be added as disabled. This causes crashes during driver reconfiguration (enabling XDP, changing the channel count) - if there is any printk() after netif_napi_add() but before napi_enable(). To ensure memory ordering is correct we need to use RCU accessors. Reported-by: Rob Sherwood <rsher@fb.com> Fixes: 2d8bff1269 ("netpoll: Close race condition between poll_one_napi and napi_disable") Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-09-12 13:40:23 +02:00
..
6lowpan	6lowpan: Off by one handling ->nexthdr	2020-01-27 14:50:41 +01:00
9p	net/9p: validate fds in p9_fd_open	2020-08-11 15:32:32 +02:00
802
8021q	vlan: vlan_changelink() should propagate errors	2020-01-12 12:17:28 +01:00
appletalk	appletalk: Set error code if register_snap_client failed	2019-12-13 08:52:59 +01:00
atm	net: use skb_queue_empty_lockless() in poll() handlers	2019-11-10 11:27:48 +01:00
ax25	AX.25: Prevent integer overflows in connect and sendmsg	2020-07-31 18:37:48 +02:00
batman-adv	batman-adv: bla: use netif_rx_ni when not in interrupt context	2020-09-09 19:04:24 +02:00
bluetooth	Bluetooth: add a mutex lock to avoid UAF in do_enale_set	2020-08-19 08:14:50 +02:00
bpf	bpf/test_run: support cgroup local storage	2018-08-03 00:47:32 +02:00
bpfilter	signal/bpfilter: Fix bpfilter_kernl to use send_sig not force_sig	2020-01-27 14:50:51 +01:00
bridge	net: bridge: enfore alignment for ethernet address	2020-06-30 23:17:03 -04:00
caif	net: use skb_queue_empty_lockless() in poll() handlers	2019-11-10 11:27:48 +01:00
can	can: gw: Fix error path of cgw_module_init	2019-08-29 08:28:30 +02:00
ceph	libceph: don't omit recovery_deletes in target_copy()	2020-07-22 09:32:13 +02:00
core	net: disable netpoll on fresh napis	2020-09-12 13:40:23 +02:00
dcb	net: dcb: Add priority-to-DSCP map getters	2018-07-27 13:17:50 -07:00
dccp	net: ipv6: add net argument to ip6_dst_lookup_flow	2020-04-29 16:31:16 +02:00
decnet	net: add bool confirm_neigh parameter for dst_ops.update_pmtu	2020-01-04 19:13:37 +01:00
dns_resolver	KEYS: Don't write out to userspace while holding key semaphore	2020-04-23 10:30:24 +02:00
dsa	net: dsa: mt7530: fix roaming from DSA user ports	2020-06-03 08:19:03 +02:00
ethernet	net: add annotations on hh->hh_len lockless accesses	2020-01-09 10:19:09 +01:00
hsr	hsr: check protocol version in hsr_newlink()	2020-04-21 09:03:03 +02:00
ieee802154	nl802154: add missing attribute validation for dev_type	2020-03-18 07:14:15 +01:00
ife
ipv4	net: initialize fastreuse on inet_inherit_port	2020-08-19 08:15:04 +02:00
ipv6	gre6: Fix reception with IP6_TNL_F_RCV_DSCP_COPY	2020-09-03 11:24:17 +02:00
iucv	net/af_iucv: always register net_device notifier	2020-01-27 14:50:56 +01:00
kcm	kcm: switch order of device registration to fix a crash	2019-04-17 08:38:40 +02:00
key	af_key: fix leaks in key_pol_get_resp and dump_sp.	2019-07-26 09:14:01 +02:00
l2tp	l2tp: remove skb_dst_set() from l2tp_xmit_skb()	2020-07-22 09:31:59 +02:00
l3mdev
lapb	lapb: fixed leak of control-blocks.	2019-06-22 08:15:13 +02:00
llc	llc: make sure applications use ARPHRD_ETHER	2020-07-22 09:31:59 +02:00
mac80211	mac80211: fix misplaced while instead of if	2020-08-21 11:05:32 +02:00
mac802154	net: mac802154: tx: expand tailroom if necessary	2018-08-06 11:21:37 +02:00
mpls	net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup	2020-04-29 16:31:17 +02:00
ncsi	net/ncsi: Fixup .dumpit message flags and ID check in Netlink handler	2018-08-22 21:39:08 -07:00
netfilter	netfilter: nfnetlink: nfnetlink_unicast() reports EAGAIN instead of ENOBUFS	2020-09-09 19:04:26 +02:00
netlabel	netlabel: fix problems with mapping removal	2020-09-12 13:40:22 +02:00
netlink	genetlink: remove genl_bind	2020-07-22 09:31:58 +02:00
netrom	net: netrom: Fix potential nr_neigh refcnt leak in nr_add_node	2020-04-29 16:31:21 +02:00
nfc	net/nfc/rawsock.c: add CAP_NET_RAW check.	2020-08-19 08:15:03 +02:00
nsh	nsh: set mac len based on inner packet	2018-07-12 16:55:29 -07:00
openvswitch	openvswitch: Prevent kernel-infoleak in ovs_ct_put_key()	2020-08-11 15:32:35 +02:00
packet	af_packet: TPACKET_V3: fix fill status rwlock imbalance	2020-08-19 08:15:03 +02:00
phonet	net: use skb_queue_empty_lockless() in poll() handlers	2019-11-10 11:27:48 +01:00
psample	net: psample: fix skb_over_panic	2019-12-05 09:21:30 +01:00
qrtr	net: qrtr: fix usage of idr in port assignment to socket	2020-09-03 11:24:17 +02:00
rds	rds: Prevent kernel-infoleak in rds_notify_queue_get()	2020-08-05 10:06:01 +02:00
rfkill	rfkill: Fix incorrect check to avoid NULL pointer dereference	2020-01-12 12:17:17 +01:00
rose	net/rose: fix unbound loop in rose_loopback_timer()	2019-05-02 09:59:00 +02:00
rxrpc	rxrpc: Fix race between recvmsg and sendmsg on immediate call failure	2020-08-11 15:32:35 +02:00
sched	sched: consistently handle layer3 header accesses in the presence of VLANs	2020-07-22 09:32:00 +02:00
sctp	sctp: not disable bh in the whole sctp_get_port_local()	2020-09-12 13:40:22 +02:00
smc	net/smc: Prevent kernel-infoleak in __smc_diag_dump()	2020-09-03 11:24:17 +02:00
strparser	net: strparser: partially revert "strparser: Call skb_unclone conditionally"	2019-05-16 19:41:27 +02:00
sunrpc	svcrdma: Fix another Receive buffer leak	2020-08-26 10:31:01 +02:00
switchdev
tipc	tipc: fix shutdown() of connectionless socket	2020-09-12 13:40:22 +02:00
tls	net/tls: Fix kmap usage	2020-08-19 08:15:03 +02:00
unix	af_unix: add compat_ioctl support	2020-01-17 19:47:07 +01:00
vmw_vsock	vsock: fix timeout in vsock_accept()	2020-06-10 21:34:59 +02:00
wimax	wimax: remove blank lines at EOF	2018-07-24 14:10:42 -07:00
wireless	cfg80211: regulatory: reject invalid hints	2020-09-09 19:04:32 +02:00
x25	net/x25: Fix null-ptr-deref in x25_disconnect	2020-08-05 10:06:02 +02:00
xdp	xdp: Fix xsk_generic_xmit errno	2020-06-25 15:33:05 +02:00
xfrm	xfrm: Fix double ESP trailer insertion in IPsec crypto offload.	2020-06-30 23:17:10 -04:00
compat.c	net/compat: Add missing sock updates for SCM_RIGHTS	2020-08-21 11:05:32 +02:00
Kconfig	net: remove blank lines at end of file	2018-07-24 14:10:43 -07:00
Makefile
socket.c	net: Set fput_needed iff FDPUT_FPUT is set	2020-08-19 08:15:03 +02:00
sysctl_net.c