Xin Long 5da59882a8 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: 97ede29e80ee ("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>		2020-04-06 21:35:27 +02:00
..
6lowpan
9p	9p/virtio: Add cleanup path in p9_virtio_init	2020-04-06 20:04:29 +02:00
802
8021q
appletalk
atm
ax25
batman-adv	batman-adv: fix for leaked TVLV handler.	2020-04-06 19:54:11 +02:00
bluetooth	Bluetooth: Add SMP workaround Microsoft Surface Precision Mouse bug	2020-04-06 20:04:59 +02:00
bridge	bridge/mdb: remove wrong use of NLM_F_MULTI	2020-04-06 21:35:09 +02:00
caif
can
ceph
core	net: Fix null de-reference of device refcount	2020-04-06 21:35:17 +02:00
dcb
dccp
decnet
dns_resolver
dsa
ethernet
hsr
ieee802154
ipv4	tcp: fix tcp_ecn_withdraw_cwr() to clear TCP_ECN_QUEUE_CWR	2020-04-06 21:35:25 +02:00
ipv6	ipv6: Fix the link time qualifier of 'ping_v6_proc_exit_net()'	2020-04-06 21:35:13 +02:00
ipx
irda
iucv
key	xfrm: clean up xfrm protocol checks	2020-04-06 21:34:53 +02:00
l2tp	compat_ioctl: pppoe: fix PPPOEIOCSFWD handling	2020-04-06 20:28:29 +02:00
l3mdev
lapb
llc
mac80211	mac80211: fix possible sta leak	2020-04-06 21:33:56 +02:00
mac802154
mpls
mptcp
ncm
netfilter	netfilter: conntrack: Use consistent ct id hash calculation	2020-04-06 21:32:49 +02:00
netlabel
netlink
netrom	netrom: hold sock when setting skb->destructor	2020-04-06 20:05:22 +02:00
nfc	nfc: fix potential illegal memory access	2020-04-06 20:05:16 +02:00
openvswitch
packet	af_packet: tone down the Tx-ring unsupported spew.	2020-04-06 21:35:03 +02:00
phonet
rds
rfkill
rose
rxrpc
sched	sch_hhf: ensure quantum and hhf_non_hh_weight are non-zero	2020-04-06 21:35:19 +02:00
sctp	sctp: use transport pf_retrans in sctp_do_8_2_transport_strike	2020-04-06 21:35:23 +02:00
sunrpc
switchdev
tipc	tipc: add NULL pointer check before calling kfree_rcu	2020-04-06 21:35:27 +02:00
unix
vmw_vsock
wimax
wireless	Revert "cfg80211: fix processing world regdomain when non modular"	2020-04-06 21:33:54 +02:00
x25
xfrm	xfrm: clean up xfrm protocol checks	2020-04-06 21:34:53 +02:00
compat.c
Kconfig
Makefile
socket.c
sysctl_net.c