======================================
| [  178.648221][ T1036] 1 lock held by ip/1036:
| [ 178.648378][ T1036] #0: ffffffffbadc5cc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  178.648714][ T1036]
| [  178.648714][ T1036] stack backtrace:
[  178.649223][ T1036] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  178.649627][ T1036] Call Trace:
[  178.649771][ T1036]  <TASK>
[ 178.649865][ T1036] dump_stack_lvl (lib/dump_stack.c:122) 
[ 178.650057][ T1036] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 178.650237][ T1036] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 178.650507][ T1036] br_get_link_af_size_filtered (net/bridge/br_private.h:930 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) bridge
[ 178.650756][ T1036] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 178.650961][ T1036] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 178.651189][ T1036] br_add_if (net/bridge/br_if.c:692) bridge
[ 178.651394][ T1036] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 178.651583][ T1036] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 178.651809][ T1036] do_setlink (net/core/rtnetlink.c:2907) 
[ 178.651992][ T1036] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 178.652173][ T1036] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 178.652361][ T1036] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 178.652539][ T1036] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 178.652723][ T1036] ? __kernel_text_address (kernel/extable.c:79) 
[ 178.652898][ T1036] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 178.653070][ T1036] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 178.653280][ T1036] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 178.653469][ T1036] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 178.653646][ T1036] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 178.653820][ T1036] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 178.654006][ T1036] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 178.654145][ T1036] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 178.654330][ T1036] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 178.654518][ T1036] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 178.654696][ T1036] ? 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:227) 
[ 178.654875][ T1036] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 178.655061][ T1036] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 178.655291][ T1036] ? __create_object (mm/kmemleak.c:751) 
[ 178.655473][ T1036] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 178.655666][ T1036] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 178.655805][ T1036] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 178.655986][ T1036] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 178.656174][ T1036] ? 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:227) 
[ 178.656354][ T1036] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 178.656496][ T1036] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 178.656675][ T1036] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 178.656853][ T1036] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 178.657033][ T1036] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 178.657223][ T1036] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 178.657408][ T1036] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 178.657598][ T1036] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 178.657779][ T1036] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 178.657975][ T1036] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 178.658160][ T1036] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 178.658338][ T1036] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 178.658521][ T1036] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 178.658707][ T1036] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 178.658893][ T1036] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 178.659121][ T1036] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 178.659310][ T1036] ___sys_sendmsg (net/socket.c:2653) 
[ 178.659498][ T1036] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 178.659677][ T1036] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 178.659858][ T1036] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 178.660036][ T1036] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 178.660257][ T1036] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 178.660450][ T1036] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 178.660636][ T1036] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 178.660856][ T1036] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 178.661040][ T1036] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 178.661224][ T1036] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 178.661397][ T1036] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2034 arch/x86/mm/physaddr.c:65) 
[ 178.661600][ T1036] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 178.661778][ T1036] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  178.662000][ T1036] RIP: 0033:0x7f132aca97b7
[ 178.662182][ T1036] 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)
[  178.662846][ T1036] RSP: 002b:00007ffdad8da028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  178.663118][ T1036] RAX: ffffffffffffffda RBX: 00007ffdad8da750 RCX: 00007f132aca97b7
[  178.663387][ T1036] RDX: 0000000000000000 RSI: 00007ffdad8da090 RDI: 0000000000000005
[  178.663657][ T1036] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[  178.663920][ T1036] R10: 000000003ee09910 R11: 0000000000000246 R12: 0000000000000003
[  178.664191][ T1036] R13: 0000000066bea310 R14: 0000000000496600 R15: 0000000000000000
| [  178.666369][ T1036] 1 lock held by ip/1036:
| [ 178.666507][ T1036] #0: ffffffffbadc5cc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  178.666838][ T1036]
| [  178.666838][ T1036] stack backtrace:
[  178.667331][ T1036] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  178.667734][ T1036] Call Trace:
[  178.667873][ T1036]  <TASK>
[ 178.667970][ T1036] dump_stack_lvl (lib/dump_stack.c:122) 
[ 178.668152][ T1036] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 178.668341][ T1036] br_get_link_af_size_filtered (net/bridge/br_private.h:453 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) bridge
[ 178.668595][ T1036] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 178.668800][ T1036] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 178.669037][ T1036] br_add_if (net/bridge/br_if.c:692) bridge
[ 178.669240][ T1036] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 178.669417][ T1036] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 178.669642][ T1036] do_setlink (net/core/rtnetlink.c:2907) 
[ 178.669822][ T1036] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 178.670000][ T1036] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 178.670176][ T1036] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 178.670354][ T1036] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 178.670533][ T1036] ? __kernel_text_address (kernel/extable.c:79) 
[ 178.670714][ T1036] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 178.670888][ T1036] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 178.671104][ T1036] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 178.671291][ T1036] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 178.671470][ T1036] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 178.671647][ T1036] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 178.671836][ T1036] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 178.671975][ T1036] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 178.672159][ T1036] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 178.672358][ T1036] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 178.672541][ T1036] ? 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:227) 
[ 178.672718][ T1036] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 178.672900][ T1036] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 178.673124][ T1036] ? __create_object (mm/kmemleak.c:751) 
[ 178.673307][ T1036] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 178.673493][ T1036] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 178.673627][ T1036] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 178.673805][ T1036] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 178.673981][ T1036] ? 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:227) 
[ 178.674155][ T1036] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 178.674296][ T1036] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 178.674619][ T1036] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 178.674794][ T1036] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 178.674978][ T1036] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 178.675171][ T1036] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 178.675343][ T1036] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 178.675636][ T1036] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 178.675806][ T1036] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 178.675984][ T1036] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 178.676162][ T1036] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 178.676431][ T1036] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 178.676622][ T1036] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 178.676808][ T1036] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 178.676989][ T1036] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 178.677209][ T1036] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 178.677386][ T1036] ___sys_sendmsg (net/socket.c:2653) 
[ 178.677560][ T1036] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 178.677727][ T1036] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 178.677989][ T1036] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 178.678163][ T1036] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 178.678369][ T1036] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 178.678540][ T1036] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 178.678807][ T1036] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 178.679019][ T1036] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 178.679192][ T1036] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 178.679361][ T1036] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 178.679632][ T1036] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2034 arch/x86/mm/physaddr.c:65) 
[ 178.679818][ T1036] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 178.679987][ T1036] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  178.680192][ T1036] RIP: 0033:0x7f132aca97b7
[ 178.680470][ T1036] 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)
[  178.681048][ T1036] RSP: 002b:00007ffdad8da028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  178.681299][ T1036] RAX: ffffffffffffffda RBX: 00007ffdad8da750 RCX: 00007f132aca97b7
[  178.681570][ T1036] RDX: 0000000000000000 RSI: 00007ffdad8da090 RDI: 0000000000000005
[  178.681838][ T1036] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[  178.682181][ T1036] R10: 000000003ee09910 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
lockdep_rcu_suspicious:br_get_link_af_size_filtered:br_info_notify:br_add_if:do_setlink