Andrew Collins 93409033ae net: Add netdev all_adj_list refcnt propagation to fix panic ... This is a respin of a patch to fix a relatively easily reproducible kernel panic related to the all_adj_list handling for netdevs in recent kernels. The following sequence of commands will reproduce the issue: ip link add link eth0 name eth0.100 type vlan id 100 ip link add link eth0 name eth0.200 type vlan id 200 ip link add name testbr type bridge ip link set eth0.100 master testbr ip link set eth0.200 master testbr ip link add link testbr mac0 type macvlan ip link delete dev testbr This creates an upper/lower tree of (excuse the poor ASCII art): /---eth0.100-eth0 mac0-testbr- \---eth0.200-eth0 When testbr is deleted, the all_adj_lists are walked, and eth0 is deleted twice from the mac0 list. Unfortunately, during setup in __netdev_upper_dev_link, only one reference to eth0 is added, so this results in a panic. This change adds reference count propagation so things are handled properly. Matthias Schiffer reported a similar crash in batman-adv: https://github.com/freifunk-gluon/gluon/issues/680 https://www.open-mesh.org/issues/247 which this patch also seems to resolve. Signed-off-by: Andrew Collins <acollins@cradlepoint.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-10-04 02:05:31 -04:00
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6lowpan	6lowpan: ndisc: no overreact if no short address is available	2016-09-19 20:19:34 +02:00
9p	9p/trans_virtio: use kvfree() for iov_iter_get_pages_alloc()	2016-08-09 13:42:36 +03:00
802
8021q	net: remove type_check from dev_get_nest_level()	2016-08-13 15:15:54 -07:00
appletalk	appletalk: use IS_ENABLED() instead of checking for built-in or module	2016-09-10 21:19:10 -07:00
atm	lec: use IS_ENABLED() instead of checking for built-in or module	2016-09-10 21:19:10 -07:00
ax25	AX.25: Close socket connection on session completion	2016-06-18 20:55:34 -07:00
batman-adv	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-09-23 06:46:57 -04:00
bluetooth	Bluetooth: Fix not updating scan rsp when adv off	2016-09-22 17:48:23 +02:00
bridge	netfilter: bridge: clarify bridge/netfilter message	2016-10-02 22:44:03 -04:00
caif	caif: Remove unneeded header file	2016-06-28 05:26:14 -04:00
can	can: only call can_stat_update with procfs	2016-06-23 11:23:49 +02:00
ceph	libceph: using kfree_rcu() to simplify the code	2016-08-08 21:41:42 +02:00
core	net: Add netdev all_adj_list refcnt propagation to fix panic	2016-10-04 02:05:31 -04:00
dcb
dccp	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2016-07-29 17:38:46 -07:00
decnet	net: fix decnet rtnexthop parsing	2016-07-05 14:08:47 -07:00
dns_resolver
dsa	net: dsa: add port fast ageing	2016-09-23 08:38:50 -04:00
ethernet
hsr	net/hsr: Use setup_timer and mod_timer.	2016-05-16 14:00:43 -04:00
ieee802154	ieee802154: 6lowpan: fix intra pan id check	2016-07-08 13:23:12 +02:00
ipv4	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-10-02 22:20:41 -04:00
ipv6	ipv6 addrconf: remove addrconf_sysctl_hop_limit()	2016-10-02 23:48:13 -04:00
ipx
irda	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-09-23 06:46:57 -04:00
iucv	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2016-07-29 17:38:46 -07:00
kcm	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-09-12 15:52:44 -07:00
key
l2tp	l2tp: constify net_device_ops structures	2016-09-17 10:07:23 -04:00
l3mdev	net: ipv6: Remove l3mdev_get_saddr6	2016-09-10 23:12:53 -07:00
lapb	net/lapb: tuse %*ph to dump buffers	2016-05-29 22:33:25 -07:00
llc	llc: switch type to bool as the timeout is only tested versus 0	2016-09-17 10:05:05 -04:00
mac80211	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-09-23 06:46:57 -04:00
mac802154	mac802154: use rate limited warnings for malformed frames	2016-09-19 20:19:34 +02:00
mpls	mpls: move mpls_hdr to a common location	2016-10-03 02:00:21 -04:00
ncsi	net/ncsi: avoid maybe-uninitialized warning	2016-07-25 10:32:59 -07:00
netfilter	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-09-25 23:34:19 +02:00
netlabel	netlabel: Implement CALIPSO config functions for SMACK.	2016-06-27 15:06:18 -04:00
netlink	netlink: don't forget to release a rhashtable_iter structure	2016-09-07 17:29:38 -07:00
netrom
nfc	NFC: digital: Fix RTOX supervisor PDU handling	2016-07-11 02:02:03 +02:00
openvswitch	openvswitch: use mpls_hdr	2016-10-03 02:00:22 -04:00
packet	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-07-24 00:53:32 -04:00
phonet
qrtr	Merge tag 'qcom-soc-for-4.7-2' into net-next	2016-05-17 14:11:19 -04:00
rds	RDS: add __printf format attribute to error reporting functions	2016-08-08 16:16:21 -07:00
rfkill
rose	rose: limit sk_filter trim to payload	2016-07-13 11:53:40 -07:00
rxrpc	rxrpc: Fix the call timer handling	2016-09-30 14:40:11 +01:00
sched	net/sched: act_vlan: Push skb->data to mac_header prior calling skb_vlan_*() functions	2016-10-03 21:40:50 -04:00
sctp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-10-02 22:20:41 -04:00
strparser	kcm: Remove TCP specific references from kcm and strparser	2016-08-28 23:32:41 -04:00
sunrpc	Fix a memory corruption bug that I introduced in 4.7.	2016-09-16 17:00:26 -07:00
switchdev	switchdev: remove FIB offload infrastructure	2016-09-28 04:48:00 -04:00
tipc	tipc: fix possible memory leak in tipc_udp_enable()	2016-09-13 11:28:32 -04:00
unix	af_unix: split 'u->readlock' into two: 'iolock' and 'bindlock'	2016-09-04 13:29:29 -07:00
vmw_vsock	VSOCK: Don't dec ack backlog twice for rejected connections	2016-09-27 07:59:25 -04:00
wimax
wireless	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-09-23 06:46:57 -04:00
x25	net: x25: remove null checks on arrays calling_ae and called_ae	2016-09-09 18:13:30 -07:00
xfrm	proc: Reduce cache miss in xfrm_statistics_seq_show	2016-09-30 01:50:45 -04:00
compat.c	packet: compat support for sock_fprog	2016-06-09 23:41:03 -07:00
Kconfig	strparser: Stream parser for messages	2016-08-17 19:36:23 -04:00
Makefile	strparser: Stream parser for messages	2016-08-17 19:36:23 -04:00
socket.c	fs: poll/select/recvmmsg: use timespec64 for timeout events	2016-05-19 19:12:14 -07:00
sysctl_net.c	net: Use ns_capable_noaudit() when determining net sysctl permissions	2016-10-01 03:24:28 -04:00