Xin Long b9eeaa30e4 tipc: add NULL pointer check before calling kfree_rcu ... [ Upstream commit 42dec1dbe38239cf91cc1f4df7830c66276ced37 ] Unlike kfree(p), kfree_rcu(p, rcu) won't do NULL pointer check. When tipc_nametbl_remove_publ returns NULL, the panic below happens: BUG: unable to handle kernel NULL pointer dereference at 0000000000000068 RIP: 0010:__call_rcu+0x1d/0x290 Call Trace: <IRQ> tipc_publ_notify+0xa9/0x170 [tipc] tipc_node_write_unlock+0x8d/0x100 [tipc] tipc_node_link_down+0xae/0x1d0 [tipc] tipc_node_check_dest+0x3ea/0x8f0 [tipc] ? tipc_disc_rcv+0x2c7/0x430 [tipc] tipc_disc_rcv+0x2c7/0x430 [tipc] ? tipc_rcv+0x6bb/0xf20 [tipc] tipc_rcv+0x6bb/0xf20 [tipc] ? ip_route_input_slow+0x9cf/0xb10 tipc_udp_recv+0x195/0x1e0 [tipc] ? tipc_udp_is_known_peer+0x80/0x80 [tipc] udp_queue_rcv_skb+0x180/0x460 udp_unicast_rcv_skb.isra.56+0x75/0x90 __udp4_lib_rcv+0x4ce/0xb90 ip_local_deliver_finish+0x11c/0x210 ip_local_deliver+0x6b/0xe0 ? ip_rcv_finish+0xa9/0x410 ip_rcv+0x273/0x362 Fixes: 97ede29e80 ("tipc: convert name table read-write lock to RCU") Reported-by: Li Shuang <shuali@redhat.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2019-09-21 07:12:41 +02:00
..
6lowpan
9p	9p/virtio: Add cleanup path in p9_virtio_init	2019-08-04 09:34:51 +02:00
802
8021q	vlan: disable SIOCSHWTSTAMP in container	2019-05-16 19:45:17 +02:00
appletalk	appletalk: Fix use-after-free in atalk_proc_exit	2019-04-27 09:33:59 +02:00
atm	net: atm: Fix potential Spectre v1 vulnerabilities	2019-04-27 09:33:59 +02:00
ax25	ax25: fix inconsistent lock state in ax25_destroy_timer	2019-06-22 08:18:25 +02:00
batman-adv	batman-adv: fix for leaked TVLV handler.	2019-08-04 09:34:39 +02:00
bluetooth	Bluetooth: Add SMP workaround Microsoft Surface Precision Mouse bug	2019-08-04 09:34:53 +02:00
bridge	bridge/mdb: remove wrong use of NLM_F_MULTI	2019-09-21 07:12:37 +02:00
caif
can	can: purge socket error queue on sock destruct	2019-07-10 09:56:33 +02:00
ceph
core	net: Fix null de-reference of device refcount	2019-09-21 07:12:39 +02:00
dcb
dccp
decnet
dns_resolver
dsa
ethernet
hsr
ieee802154
ipv4	tcp: fix tcp_ecn_withdraw_cwr() to clear TCP_ECN_QUEUE_CWR	2019-09-21 07:12:41 +02:00
ipv6	ipv6: Fix the link time qualifier of 'ping_v6_proc_exit_net()'	2019-09-21 07:12:38 +02:00
ipx
irda
iucv
key	xfrm: clean up xfrm protocol checks	2019-09-16 08:13:35 +02:00
l2tp	compat_ioctl: pppoe: fix PPPOEIOCSFWD handling	2019-08-11 12:20:46 +02:00
l3mdev
lapb	lapb: fixed leak of control-blocks.	2019-06-22 08:18:25 +02:00
llc	llc: fix skb leak in llc_build_and_send_ui_pkt()	2019-06-11 12:24:06 +02:00
mac80211	mac80211: fix possible sta leak	2019-09-06 10:18:17 +02:00
mac802154
mpls
netfilter	netfilter: conntrack: Use consistent ct id hash calculation	2019-09-06 10:18:13 +02:00
netlabel
netlink
netrom	netrom: hold sock when setting skb->destructor	2019-08-04 09:34:54 +02:00
nfc	nfc: fix potential illegal memory access	2019-08-04 09:34:54 +02:00
openvswitch	openvswitch: fix flow actions reallocation	2019-04-27 09:33:54 +02:00
packet	af_packet: tone down the Tx-ring unsupported spew.	2019-09-16 08:13:36 +02:00
phonet
rds	net: rds: fix memory leak in rds_ib_flush_mr_pool	2019-06-11 12:24:12 +02:00
rfkill
rose	net: rose: fix a possible stack overflow	2019-04-03 06:23:25 +02:00
rxrpc
sched	sch_hhf: ensure quantum and hhf_non_hh_weight are non-zero	2019-09-21 07:12:39 +02:00
sctp	sctp: use transport pf_retrans in sctp_do_8_2_transport_strike	2019-09-21 07:12:40 +02:00
sunrpc	sunrpc: don't mark uninitialised items as VALID.	2019-05-16 19:44:44 +02:00
switchdev
tipc	tipc: add NULL pointer check before calling kfree_rcu	2019-09-21 07:12:41 +02:00
unix
vmw_vsock
wimax
wireless	Revert "cfg80211: fix processing world regdomain when non modular"	2019-09-06 10:18:17 +02:00
x25
xfrm	xfrm: clean up xfrm protocol checks	2019-09-16 08:13:35 +02:00
compat.c
Kconfig
Makefile
socket.c
sysctl_net.c