======================================
| [   93.317147][ T1188] 1 lock held by ip/1188:
| [ 93.317243][ T1188] #0: ffffffffb69678c0 (&ops->srcu){.+.+}-{0:0}, at: rtnl_link_ops_get (./include/linux/srcu.h:151 ./include/linux/srcu.h:250 net/core/rtnetlink.c:551) 
| [   93.317473][ T1188]
| [   93.317473][ T1188] stack backtrace:
[   93.317817][ T1188] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   93.318100][ T1188] Call Trace:
[   93.318200][ T1188]  <TASK>
[ 93.318268][ T1188] dump_stack_lvl (lib/dump_stack.c:123) 
[ 93.318401][ T1188] print_circular_bug (kernel/locking/lockdep.c:2077) 
[ 93.318531][ T1188] check_noncircular (kernel/locking/lockdep.c:2206) 
[ 93.318659][ T1188] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2182) 
[ 93.318790][ T1188] ? get_reg (arch/x86/kernel/unwind_orc.c:456 (discriminator 2)) 
[ 93.318890][ T1188] ? alloc_chain_hlocks (kernel/locking/lockdep.c:3528) 
[ 93.319020][ T1188] check_prev_add (kernel/locking/lockdep.c:3162) 
[ 93.319149][ T1188] validate_chain (kernel/locking/lockdep.c:3281 kernel/locking/lockdep.c:3904) 
[ 93.319280][ T1188] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 93.319409][ T1188] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 93.319540][ T1188] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 93.319637][ T1188] ? validate_chain (kernel/locking/lockdep.c:3915) 
[ 93.319765][ T1188] __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 93.319895][ T1188] ? check_prev_add (kernel/locking/lockdep.c:1629 kernel/locking/lockdep.c:1634 kernel/locking/lockdep.c:3233) 
[ 93.320026][ T1188] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5827) 
[ 93.320154][ T1188] ? rtnl_newlink (net/core/rtnetlink.c:321 net/core/rtnetlink.c:4025) 
[ 93.320282][ T1188] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 93.320410][ T1188] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 93.320539][ T1188] ? rtnl_newlink (net/core/rtnetlink.c:321 net/core/rtnetlink.c:4025) 
[ 93.320668][ T1188] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[ 93.320796][ T1188] ? rtnl_newlink (net/core/rtnetlink.c:321 net/core/rtnetlink.c:4025) 
[ 93.320927][ T1188] __mutex_lock (kernel/locking/mutex.c:610 kernel/locking/mutex.c:752) 
[ 93.321055][ T1188] ? rtnl_newlink (net/core/rtnetlink.c:321 net/core/rtnetlink.c:4025) 
[ 93.321184][ T1188] ? __lock_release (kernel/locking/lockdep.c:5547) 
[ 93.321311][ T1188] ? rtnl_newlink (net/core/rtnetlink.c:321 net/core/rtnetlink.c:4025) 
[ 93.321440][ T1188] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 93.321573][ T1188] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 93.321706][ T1188] ? rtnl_newlink (net/core/rtnetlink.c:321 net/core/rtnetlink.c:4025) 
[ 93.321837][ T1188] rtnl_newlink (net/core/rtnetlink.c:321 net/core/rtnetlink.c:4025) 
[ 93.321966][ T1188] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3919) 
[ 93.322094][ T1188] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 93.322223][ T1188] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 93.322353][ T1188] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6926) 
[ 93.322481][ T1188] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3919) 
[ 93.322611][ T1188] rtnetlink_rcv_msg (net/core/rtnetlink.c:6928) 
[ 93.322740][ T1188] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6831) 
[ 93.322869][ T1188] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) 
[ 93.322998][ T1188] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 93.323097][ T1188] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 93.323225][ T1188] netlink_rcv_skb (net/netlink/af_netlink.c:2536) 
[ 93.323352][ T1188] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6831) 
[ 93.323481][ T1188] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2513) 
[ 93.323612][ T1188] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) 
[ 93.323742][ T1188] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 93.323873][ T1188] netlink_unicast (net/netlink/af_netlink.c:1316 net/netlink/af_netlink.c:1342) 
[ 93.324002][ T1188] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1327) 
[ 93.324129][ T1188] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 93.324261][ T1188] netlink_sendmsg (net/netlink/af_netlink.c:1886) 
[ 93.324389][ T1188] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1805) 
[ 93.324519][ T1188] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2609) 
[ 93.324648][ T1188] ? __pfx_____sys_sendmsg (net/socket.c:2555) 
[ 93.324776][ T1188] ? __pfx_copy_msghdr_from_user (net/socket.c:2535) 
[ 93.324944][ T1188] ___sys_sendmsg (net/socket.c:2665) 
[ 93.325072][ T1188] ? __pfx____sys_sendmsg (net/socket.c:2652) 
[ 93.325200][ T1188] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 93.325327][ T1188] ? usage_skip (kernel/locking/lockdep.c:2314 kernel/locking/lockdep.c:2282) 
[ 93.325457][ T1188] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) 
[ 93.325584][ T1188] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:727 arch/x86/mm/fault.c:1340) 
[ 93.325714][ T1188] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) 
[ 93.325813][ T1188] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2694) 
[ 93.325942][ T1188] ? __pfx___sys_sendmsg (net/socket.c:2680) 
[ 93.326073][ T1188] ? __pfx___up_read (kernel/locking/rwsem.c:1337) 
[ 93.326208][ T1188] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 93.326337][ T1188] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   93.326495][ T1188] RIP: 0033:0x7fb9e97887b7
[ 93.326628][ T1188] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0a 00                	or     (%rax),%al
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   93.327079][ T1188] RSP: 002b:00007ffe731a0548 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   93.327271][ T1188] RAX: ffffffffffffffda RBX: 00007ffe731a0c80 RCX: 00007fb9e97887b7
[   93.327464][ T1188] RDX: 0000000000000000 RSI: 00007ffe731a05b0 RDI: 0000000000000005
[   93.327655][ T1188] RBP: 0000000000000000 R08: 000000000000003c R09: 0000000000403418
[   93.327847][ T1188] R10: 00007fb9e9641708 R11: 0000000000000246 R12: 00007ffe731a0ca8


Finger prints:
print_circular_bug:check_noncircular:check_prev_add:validate_chain:__lock_acquire