Wolfgang Bumiller 53b76cdf7e net: fix deadlock while clearing neighbor proxy table ... When coming from ndisc_netdev_event() in net/ipv6/ndisc.c, neigh_ifdown() is called with &nd_tbl, locking this while clearing the proxy neighbor entries when eg. deleting an interface. Calling the table's pndisc_destructor() with the lock still held, however, can cause a deadlock: When a multicast listener is available an IGMP packet of type ICMPV6_MGM_REDUCTION may be sent out. When reaching ip6_finish_output2(), if no neighbor entry for the target address is found, __neigh_create() is called with &nd_tbl, which it'll want to lock. Move the elements into their own list, then unlock the table and perform the destruction. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=199289 Fixes: 6fd6ce2056 ("ipv6: Do not depend on rt->n in ip6_finish_output2().") Signed-off-by: Wolfgang Bumiller <w.bumiller@proxmox.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2018-04-12 22:01:22 -04:00
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6lowpan
9p
802
8021q
appletalk
atm
ax25
batman-adv
bluetooth
bpf
bridge
caif
can
ceph
core	net: fix deadlock while clearing neighbor proxy table	2018-04-12 22:01:22 -04:00
dcb
dccp
decnet
dns_resolver
dsa
ethernet
hsr
ieee802154
ife
ipv4	tcp: md5: reject TCP_MD5SIG or TCP_MD5SIG_EXT on established sockets	2018-04-12 21:46:11 -04:00
ipv6
iucv
kcm
key
l2tp
l3mdev
lapb
llc
mac80211
mac802154
mpls
ncsi
netfilter
netlabel
netlink
netrom
nfc
nsh
openvswitch
packet
phonet
psample
qrtr
rds
rfkill
rose
rxrpc
sched
sctp	sctp: do not check port in sctp_inet6_cmp_addr	2018-04-12 22:01:05 -04:00
smc
strparser	strparser: Fix incorrect strp->need_bytes value.	2018-04-12 21:54:59 -04:00
sunrpc
switchdev
tipc	tipc: fix missing initializer in tipc_sendmsg()	2018-04-12 21:55:38 -04:00
tls
unix
vmw_vsock
wimax
wireless
x25
xfrm
compat.c
Kconfig
Makefile
socket.c
sysctl_net.c