your still have deadlock and oops


1.351918] ======================================================
[    1.351989] [ INFO: possible circular locking dependency detected ]
[    1.352056] 3.11.0-rc5+ #1 Not tainted
[    1.352122] -------------------------------------------------------
[    1.352195] crda/311 is trying to acquire lock:
[    1.352383] microcode: CPU5 sig=0x306c3, pf=0x2, revision=0x9
[    1.352258]  (genl_mutex){+.+.+.}, at: [<ffffffff81596902>] genl_lock+0x12/0x20
[    1.352562] 
but task is already holding lock:
[    1.352716] systemd-udevd[275]: renamed network interface eth0 to enp2s0
[    1.352666]  (nlk->cb_mutex){+.+.+.}, at: [<ffffffff81592b09>] netlink_dump+0x29/0x240
[    1.352940] 
which lock already depends on the new lock.

[    1.353039] 
the existing dependency chain (in reverse order) is:
[    1.353113] microcode: CPU6 sig=0x306c3, pf=0x2, revision=0x9
[    1.353189] 
-> #1 (nlk->cb_mutex){+.+.+.}:
[    1.353385]        [<ffffffff810ace97>] lock_acquire+0x87/0x130
[    1.353482]        [<ffffffff8166defc>] mutex_lock_nested+0x5c/0x3e0
[    1.353575]        [<ffffffff8159317f>] __netlink_dump_start+0xbf/0x1c0
[    1.353686]        [<ffffffff8159608c>] genl_family_rcv_msg+0x1bc/0x320
[    1.353753] microcode: CPU7 sig=0x306c3, pf=0x2, revision=0x9
[    1.353843]        [<ffffffff81596989>] genl_rcv_msg+0x79/0xb0
[    1.353938]        [<ffffffff81595bd9>] netlink_rcv_skb+0xa9/0xc0
[    1.354030]        [<ffffffff81595eb7>] genl_rcv+0x27/0x40
[    1.354123]        [<ffffffff8159516d>] netlink_unicast+0x10d/0x190
[    1.354214]        [<ffffffff815955f9>] netlink_sendmsg+0x359/0x760
[    1.354308]        [<ffffffff8154e082>] sock_sendmsg+0xc2/0xe0
[    1.354427] microcode: Microcode Update Driver: v2.00 <email address hidden>, Peter Oruba
[    1.354409]        [<ffffffff8154e46c>] ___sys_sendmsg+0x37c/0x390
[    1.354619]        [<ffffffff81551144>] __sys_sendmsg+0x44/0x80
[    1.354729]        [<ffffffff8155118d>] SyS_sendmsg+0xd/0x20
[    1.354835]        [<ffffffff81678f16>] system_call_fastpath+0x1a/0x1f
[    1.354932] 
-> #0 (genl_mutex){+.+.+.}:
[    1.355129]        [<ffffffff810ac028>] __lock_acquire+0x1528/0x1dd0
[    1.355222]        [<ffffffff810ace97>] lock_acquire+0x87/0x130
[    1.355316]        [<ffffffff8166defc>] mutex_lock_nested+0x5c/0x3e0
[    1.355412]        [<ffffffff81596902>] genl_lock+0x12/0x20
[    1.355516]        [<ffffffff81596aec>] ctrl_dumpfamily+0x12c/0x140
[    1.355638]        [<ffffffff81592b70>] netlink_dump+0x90/0x240
[    1.355746]        [<ffffffff81593010>] netlink_recvmsg+0x2f0/0x3a0
[    1.355858]        [<ffffffff8154dd29>] sock_recvmsg+0xd9/0xf0
[    1.355964]        [<ffffffff8154d562>] ___sys_recvmsg+0x112/0x2a0
[    1.356076]        [<ffffffff81551384>] __sys_recvmsg+0x44/0x80
[    1.356181]        [<ffffffff815513cd>] SyS_recvmsg+0xd/0x20
[    1.356271]        [<ffffffff81678f16>] system_call_fastpath+0x1a/0x1f
[    1.356411] 
other info that might help us debug this:

[    1.356700]  Possible unsafe locking scenario:

[    1.356929]        CPU0                    CPU1
[    1.357081]        ----                    ----
[    1.357248]   lock(nlk->cb_mutex);
[    1.357517]                                lock(genl_mutex);
[    1.357823]                                lock(nlk->cb_mutex);
[    1.358098]   lock(genl_mutex);
[    1.358354] 
 *** DEADLOCK ***

[    1.358486] 1 lock held by crda/311:
[    1.358541]  #0:  (nlk->cb_mutex){+.+.+.}, at: [<ffffffff81592b09>] netlink_dump+0x29/0x240
[    1.358820] 
stack backtrace:
[    1.358898] CPU: 0 PID: 311 Comm: crda Not tainted 3.11.0-rc5+ #1
[    1.358969] Hardware name: Gigabyte Technology Co., Ltd. H87N-WIFI/H87N-WIFI, BIOS F4 08/03/2013
[    1.359059]  ffffffff820ac640 ffff8804253af878 ffffffff8166a218 0000000000000001
[    1.359296]  ffffffff820ac640 ffff8804253af8c8 ffffffff81665ed3 ffff8804253af898
[    1.359509]  ffff8804253af948 00000000005ea0ec ffff880426be86f8 00000000005ea0ec
[    1.359758] Call Trace:
[    1.359813]  [<ffffffff8166a218>] dump_stack+0x4f/0x84
[    1.359878]  [<ffffffff81665ed3>] print_circular_bug+0x2ae/0x2bf
[    1.359948]  [<ffffffff810ac028>] __lock_acquire+0x1528/0x1dd0
[    1.360010]  [<ffffffff810aa356>] ? check_irq_usage+0x96/0xe0
[    1.360086]  [<ffffffff810ace97>] lock_acquire+0x87/0x130
[    1.360146]  [<ffffffff81596902>] ? genl_lock+0x12/0x20
[    1.360223]  [<ffffffff81169ff0>] ? __kmalloc_node_track_caller+0x290/0x390
[    1.360287]  [<ffffffff81596902>] ? genl_lock+0x12/0x20
[    1.360363]  [<ffffffff8166defc>] mutex_lock_nested+0x5c/0x3e0
[    1.360424]  [<ffffffff81596902>] ? genl_lock+0x12/0x20
[    1.360501]  [<ffffffff8155a197>] ? __kmalloc_reserve.isra.45+0x37/0xa0
[    1.360564]  [<ffffffff81596902>] genl_lock+0x12/0x20
[    1.360661]  [<ffffffff81596aec>] ctrl_dumpfamily+0x12c/0x140
[    1.360722]  [<ffffffff8159205f>] ? netlink_alloc_skb+0xaf/0x1e0
[    1.360799]  [<ffffffff81592b70>] netlink_dump+0x90/0x240
[    1.360860]  [<ffffffff81593010>] netlink_recvmsg+0x2f0/0x3a0
[    1.360938]  [<ffffffff8154dd29>] sock_recvmsg+0xd9/0xf0
[    1.361000]  [<ffffffff8154d562>] ___sys_recvmsg+0x112/0x2a0
[    1.361078]  [<ffffffff8106ee6e>] ? up_read+0x1e/0x40
[    1.361138]  [<ffffffff81674fcc>] ? __do_page_fault+0x1fc/0x570
[    1.361215]  [<ffffffff8113d55f>] ? might_fault+0x4f/0xa0
[    1.361276]  [<ffffffff8154d3f3>] ? move_addr_to_user+0x83/0xe0
[    1.361354]  [<ffffffff81551384>] __sys_recvmsg+0x44/0x80
[    1.361416]  [<ffffffff815513cd>] SyS_recvmsg+0xd/0x20
[    1.361492]  [<ffffffff81678f16>] system_call_fastpath+0x1a/0x1f