WANG Cong d079535d5e net: use for_each_netdev_safe() in rtnl_group_changelink() ... In case we move the whole dev group to another netns, we should call for_each_netdev_safe(), otherwise we get a soft lockup: NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [ip:798] irq event stamp: 255424 hardirqs last enabled at (255423): [<ffffffff81a2aa95>] restore_args+0x0/0x30 hardirqs last disabled at (255424): [<ffffffff81a2ad5a>] apic_timer_interrupt+0x6a/0x80 softirqs last enabled at (255422): [<ffffffff81079ebc>] __do_softirq+0x2c1/0x3a9 softirqs last disabled at (255417): [<ffffffff8107a190>] irq_exit+0x41/0x95 CPU: 0 PID: 798 Comm: ip Not tainted 4.0.0-rc4+ #881 Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 task: ffff8800d1b88000 ti: ffff880119530000 task.ti: ffff880119530000 RIP: 0010:[<ffffffff810cad11>] [<ffffffff810cad11>] debug_lockdep_rcu_enabled+0x28/0x30 RSP: 0018:ffff880119533778 EFLAGS: 00000246 RAX: ffff8800d1b88000 RBX: 0000000000000002 RCX: 0000000000000038 RDX: 0000000000000000 RSI: ffff8800d1b888c8 RDI: ffff8800d1b888c8 RBP: ffff880119533778 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 000000000000b5c2 R12: 0000000000000246 R13: ffff880119533708 R14: 00000000001d5a40 R15: ffff88011a7d5a40 FS: 00007fc01315f740(0000) GS:ffff88011a600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007f367a120988 CR3: 000000011849c000 CR4: 00000000000007f0 Stack: ffff880119533798 ffffffff811ac868 ffffffff811ac831 ffffffff811ac828 ffff8801195337c8 ffffffff811ac8c9 ffff8801195339b0 ffff8801197633e0 0000000000000000 ffff8801195339b0 ffff8801195337d8 ffffffff811ad2d7 Call Trace: [<ffffffff811ac868>] rcu_read_lock+0x37/0x6e [<ffffffff811ac831>] ? rcu_read_unlock+0x5f/0x5f [<ffffffff811ac828>] ? rcu_read_unlock+0x56/0x5f [<ffffffff811ac8c9>] __fget+0x2a/0x7a [<ffffffff811ad2d7>] fget+0x13/0x15 [<ffffffff811be732>] proc_ns_fget+0xe/0x38 [<ffffffff817c7714>] get_net_ns_by_fd+0x11/0x59 [<ffffffff817df359>] rtnl_link_get_net+0x33/0x3e [<ffffffff817df3d7>] do_setlink+0x73/0x87b [<ffffffff810b28ce>] ? trace_hardirqs_off+0xd/0xf [<ffffffff81a2aa95>] ? retint_restore_args+0xe/0xe [<ffffffff817e0301>] rtnl_newlink+0x40c/0x699 [<ffffffff817dffe0>] ? rtnl_newlink+0xeb/0x699 [<ffffffff81a29246>] ? _raw_spin_unlock+0x28/0x33 [<ffffffff8143ed1e>] ? security_capable+0x18/0x1a [<ffffffff8107da51>] ? ns_capable+0x4d/0x65 [<ffffffff817de5ce>] rtnetlink_rcv_msg+0x181/0x194 [<ffffffff817de407>] ? rtnl_lock+0x17/0x19 [<ffffffff817de407>] ? rtnl_lock+0x17/0x19 [<ffffffff817de44d>] ? __rtnl_unlock+0x17/0x17 [<ffffffff818327c6>] netlink_rcv_skb+0x4d/0x93 [<ffffffff817de42f>] rtnetlink_rcv+0x26/0x2d [<ffffffff81830f18>] netlink_unicast+0xcb/0x150 [<ffffffff8183198e>] netlink_sendmsg+0x501/0x523 [<ffffffff8115cba9>] ? might_fault+0x59/0xa9 [<ffffffff817b5398>] ? copy_from_user+0x2a/0x2c [<ffffffff817b7b74>] sock_sendmsg+0x34/0x3c [<ffffffff817b7f6d>] ___sys_sendmsg+0x1b8/0x255 [<ffffffff8115c5eb>] ? handle_pte_fault+0xbd5/0xd4a [<ffffffff8100a2b0>] ? native_sched_clock+0x35/0x37 [<ffffffff8109e94b>] ? sched_clock_local+0x12/0x72 [<ffffffff8109eb9c>] ? sched_clock_cpu+0x9e/0xb7 [<ffffffff810cadbf>] ? rcu_read_lock_held+0x3b/0x3d [<ffffffff811ac1d8>] ? __fcheck_files+0x4c/0x58 [<ffffffff811ac946>] ? __fget_light+0x2d/0x52 [<ffffffff817b8adc>] __sys_sendmsg+0x42/0x60 [<ffffffff817b8b0c>] SyS_sendmsg+0x12/0x1c [<ffffffff81a29e32>] system_call_fastpath+0x12/0x17 Fixes: e7ed828f10 ("netlink: support setting devgroup parameters") Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2015-03-24 13:02:32 -04:00
..
6lowpan
9p	9p/trans_virtio: fix hot-unplug	2015-03-13 15:55:41 +10:30
802
8021q
appletalk
atm
ax25
batman-adv
bluetooth
bridge	bridge: reset bridge mtu after deleting an interface	2015-03-14 19:12:38 -04:00
caif	caif: fix MSG_OOB test in caif_seqpkt_recvmsg()	2015-03-15 22:19:17 -04:00
can	can: add missing initialisations in CAN related skbuffs	2015-03-09 10:22:24 +01:00
ceph	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client	2015-02-19 14:14:42 -08:00
core	net: use for_each_netdev_safe() in rtnl_group_changelink()	2015-03-24 13:02:32 -04:00
dcb
dccp
decnet	decnet: Fix obvious o/0 typo	2015-02-23 15:28:50 -05:00
dns_resolver
dsa	net: dsa: Set valid phy interface type	2015-02-17 10:37:39 -08:00
ethernet
hsr	net/hsr: Fix NULL pointer dereference and refcnt bugs when deleting a HSR interface.	2015-03-01 13:40:23 -05:00
ieee802154
ipv4	tcp: prevent fetching dst twice in early demux code	2015-03-23 22:38:24 -04:00
ipv6	tcp: prevent fetching dst twice in early demux code	2015-03-23 22:38:24 -04:00
ipx
irda	TTY/Serial fixes for 4.0-rc3	2015-03-08 12:25:40 -07:00
iucv
key
l2tp
lapb
llc
mac80211	mac80211: ignore CSA to same channel	2015-03-16 09:36:12 +01:00
mac802154
mpls
netfilter	netfilter: nft_compat: set IP6T_F_PROTO flag if protocol is set	2015-03-22 19:32:05 +01:00
netlabel	Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security	2015-02-11 20:25:11 -08:00
netlink	rhashtable: remove indirection for grow/shrink decision functions	2015-02-27 16:06:02 -05:00
netrom
nfc	NFC: nci: Move NFCEE discovery logic	2015-02-04 09:15:18 +01:00
openvswitch	openvswitch: Fix serialization of non-masked set actions.	2015-03-03 14:38:57 -05:00
packet	net: delete stale packet_mclist entries	2015-03-09 16:17:43 -04:00
phonet
rds	rds: avoid potential stack overflow	2015-03-12 00:28:01 -04:00
rfkill	Last round of updates for net-next:	2015-02-04 14:57:45 -08:00
rose
rxrpc	rxrpc: bogus MSG_PEEK test in rxrpc_recvmsg()	2015-03-15 22:20:09 -04:00
sched	act_bpf: allow non-default TC_ACT opcodes as BPF exec outcome	2015-03-17 22:15:06 -04:00
sctp	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-02-05 14:33:28 -08:00
sunrpc	sunrpc: fix braino in ->poll()	2015-03-08 12:53:46 -07:00
switchdev	Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild	2015-02-19 10:36:45 -08:00
tipc	tipc: fix bug in link failover handling	2015-03-09 16:20:41 -04:00
unix
vmw_vsock	vmci: propagate msghdr all way down to __qp_memcpy_to_queue()	2015-02-04 01:34:14 -05:00
wimax
wireless	nl80211: ignore HT/VHT capabilities without QoS/WMM	2015-03-16 09:36:11 +01:00
x25
xfrm	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec	2015-03-16 16:16:49 -04:00
compat.c	net: compat: Update get_compat_msghdr() to match copy_msghdr_from_user() behaviour	2015-03-20 16:31:09 -04:00
Kconfig
Makefile
socket.c	net: validate the range we feed to iov_iter_init() in sys_sendto/sys_recvfrom	2015-03-20 16:38:06 -04:00
sysctl_net.c