Nikolay Aleksandrov bdeb026dfd ip6mr: fix notification device destruction ... [ Upstream commit 723b929ca0f79c0796f160c2eeda4597ee98d2b8 ] Andrey Konovalov reported a BUG caused by the ip6mr code which is caused because we call unregister_netdevice_many for a device that is already being destroyed. In IPv4's ipmr that has been resolved by two commits long time ago by introducing the "notify" parameter to the delete function and avoiding the unregister when called from a notifier, so let's do the same for ip6mr. The trace from Andrey: ------------[ cut here ]------------ kernel BUG at net/core/dev.c:6813! invalid opcode: 0000 [#1] SMP KASAN Modules linked in: CPU: 1 PID: 1165 Comm: kworker/u4:3 Not tainted 4.11.0-rc7+ #251 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 Workqueue: netns cleanup_net task: ffff880069208000 task.stack: ffff8800692d8000 RIP: 0010:rollback_registered_many+0x348/0xeb0 net/core/dev.c:6813 RSP: 0018:ffff8800692de7f0 EFLAGS: 00010297 RAX: ffff880069208000 RBX: 0000000000000002 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88006af90569 RBP: ffff8800692de9f0 R08: ffff8800692dec60 R09: 0000000000000000 R10: 0000000000000006 R11: 0000000000000000 R12: ffff88006af90070 R13: ffff8800692debf0 R14: dffffc0000000000 R15: ffff88006af90000 FS: 0000000000000000(0000) GS:ffff88006cb00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe7e897d870 CR3: 00000000657e7000 CR4: 00000000000006e0 Call Trace: unregister_netdevice_many.part.105+0x87/0x440 net/core/dev.c:7881 unregister_netdevice_many+0xc8/0x120 net/core/dev.c:7880 ip6mr_device_event+0x362/0x3f0 net/ipv6/ip6mr.c:1346 notifier_call_chain+0x145/0x2f0 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 raw_notifier_call_chain+0x2d/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x51/0x90 net/core/dev.c:1647 call_netdevice_notifiers net/core/dev.c:1663 rollback_registered_many+0x919/0xeb0 net/core/dev.c:6841 unregister_netdevice_many.part.105+0x87/0x440 net/core/dev.c:7881 unregister_netdevice_many net/core/dev.c:7880 default_device_exit_batch+0x4fa/0x640 net/core/dev.c:8333 ops_exit_list.isra.4+0x100/0x150 net/core/net_namespace.c:144 cleanup_net+0x5a8/0xb40 net/core/net_namespace.c:463 process_one_work+0xc04/0x1c10 kernel/workqueue.c:2097 worker_thread+0x223/0x19c0 kernel/workqueue.c:2231 kthread+0x35e/0x430 kernel/kthread.c:231 ret_from_fork+0x31/0x40 arch/x86/entry/entry_64.S:430 Code: 3c 32 00 0f 85 70 0b 00 00 48 b8 00 02 00 00 00 00 ad de 49 89 47 78 e9 93 fe ff ff 49 8d 57 70 49 8d 5f 78 eb 9e e8 88 7a 14 fe <0f> 0b 48 8b 9d 28 fe ff ff e8 7a 7a 14 fe 48 b8 00 00 00 00 00 RIP: rollback_registered_many+0x348/0xeb0 RSP: ffff8800692de7f0 ---[ end trace e0b29c57e9b3292c ]--- Reported-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Tested-by: Andrey Konovalov <andreyknvl@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-05-02 21:19:54 -07:00
..
6lowpan
9p	IB/cma: Add support for network namespaces	2015-10-28 12:32:48 -04:00
802
8021q	net: add recursion limit to GRO	2016-11-15 07:46:38 +01:00
appletalk
atm
ax25	ax25: Fix segfault after sock connection timeout	2017-02-04 09:45:09 +01:00
batman-adv	batman-adv: Check for alloc errors when preparing TT local data	2016-12-15 08:49:23 -08:00
bluetooth	Bluetooth: Fix l2cap_sock_setsockopt() with optname BT_RCVMTU	2016-08-20 18:09:19 +02:00
bridge	bridge: drop netfilter fake rtable unconditionally	2017-03-22 12:04:17 +01:00
caif	net: caif: fix misleading indentation	2016-09-30 10:18:35 +02:00
can	can: Fix kernel panic at security_sock_rcv_skb	2017-02-18 16:39:26 +01:00
ceph	libceph: force GFP_NOIO for socket allocations	2017-04-08 09:53:30 +02:00
core	netpoll: Check for skb->queue_mapping	2017-05-02 21:19:53 -07:00
dcb
dccp	dccp: fix memory leak during tear-down of unsuccessful connection request	2017-03-22 12:04:17 +01:00
decnet	decnet: Do not build routes to devices without decnet private data.	2016-05-18 17:06:35 -07:00
dns_resolver	net: dns_resolver: convert time_t to time64_t	2015-11-18 16:27:46 -05:00
dsa	net: dsa: Bring back device detaching in dsa_slave_suspend()	2017-02-04 09:45:10 +01:00
ethernet	net: introduce device min_header_len	2017-02-18 16:39:27 +01:00
hsr	net/hsr: fix a warning message	2015-11-23 14:56:15 -05:00
ieee802154	net: fix percpu memory leaks	2015-11-02 22:47:14 -05:00
ipv4	tcp: clear saved_syn in tcp_disconnect()	2017-05-02 21:19:53 -07:00
ipv6	ip6mr: fix notification device destruction	2017-05-02 21:19:54 -07:00
ipx
irda	irda: Fix lockdep annotations in hashbin_delete().	2017-02-26 11:07:50 +01:00
iucv	af_iucv: Validate socket address length in iucv_sock_bind()	2016-03-03 15:07:03 -08:00
key
l2tp	l2tp: fix PPP pseudo-wire auto-loading	2017-05-02 21:19:52 -07:00
l3mdev
lapb
llc	net/llc: avoid BUG_ON() in skb_orphan()	2017-02-26 11:07:49 +01:00
mac80211	mac80211: reject ToDS broadcast data frames	2017-04-27 09:09:33 +02:00
mac802154
mpls	mpls: Send route delete notifications when router module is unloaded	2017-03-22 12:04:16 +01:00
netfilter	netfilter: nfnetlink: correctly validate length of batch messages	2017-04-30 05:49:28 +02:00
netlabel	netlabel: add address family checks to netlbl_{sock,req}_delattr()	2016-08-20 18:09:22 +02:00
netlink	netlink: remove mmapped netlink support	2017-03-22 12:04:13 +01:00
netrom
nfc	net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA	2015-12-01 15:45:05 -05:00
openvswitch	net/openvswitch: Set the ipv6 source tunnel key address attribute correctly	2017-03-30 09:35:12 +02:00
packet	net/packet: fix overflow in check for tp_reserve	2017-05-02 21:19:51 -07:00
phonet	phonet: properly unshare skbs in phonet_rcv()	2016-01-31 11:29:00 -08:00
rds	RDS: Fix the atomicity for congestion map update	2017-05-02 21:19:49 -07:00
rfkill	rfkill: fix rfkill_fop_read wait_event usage	2016-03-03 15:07:26 -08:00
rose
rxrpc	net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA	2015-12-01 15:45:05 -05:00
sched	net_sched: close another race condition in tcf_mirred_release()	2017-05-02 21:19:49 -07:00
sctp	sctp: listen on the sock only when it's state is listening or closed	2017-05-02 21:19:52 -07:00
sunrpc	SUNRPC: fix refcounting problems with auth_gss messages.	2017-04-21 09:30:08 +02:00
switchdev	switchdev: pass pointer to fib_info instead of copy	2016-06-24 10:18:16 -07:00
tipc	tipc: check minimum bearer MTU	2017-04-30 05:49:28 +02:00
unix	net: unix: properly re-increment inflight counter of GC discarded candidates	2017-03-30 09:35:13 +02:00
vmw_vsock	VSOCK: Detach QP check should filter out non matching QPs.	2017-04-27 09:09:32 +02:00
wimax
wireless	nl80211: fix dumpit error path RTNL deadlocks	2017-03-30 09:35:18 +02:00
x25	net: fix a kernel infoleak in x25 module	2016-05-18 17:06:43 -07:00
xfrm	xfrm_user: validate XFRM_MSG_NEWAE incoming ESN size harder	2017-03-31 09:49:52 +02:00
compat.c
Kconfig
Makefile
socket.c	net: socket: fix recvmmsg not returning error from sock_error	2017-02-26 11:07:50 +01:00
sysctl_net.c	net: Use ns_capable_noaudit() when determining net sysctl permissions	2016-09-15 08:27:50 +02:00