======================================
| [   56.095401][  T449] 1 lock held by ip/449:
| [ 56.095566][ T449] #0: ffffffff961bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   56.095924][  T449]
| [   56.095924][  T449] stack backtrace:
[   56.096432][  T449] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   56.096832][  T449] Call Trace:
[   56.096979][  T449]  <TASK>
[ 56.097076][ T449] dump_stack_lvl (lib/dump_stack.c:122) 
[ 56.097279][ T449] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 56.097503][ T449] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 56.097949][ T449] 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
[ 56.098317][ T449] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 56.098642][ T449] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 56.099005][ T449] br_add_if (net/bridge/br_if.c:692) bridge
[ 56.099325][ T449] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 56.099597][ T449] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 56.099962][ T449] do_setlink (net/core/rtnetlink.c:2907) 
[ 56.100275][ T449] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 56.100565][ T449] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 56.100846][ T449] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 56.101132][ T449] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 56.101421][ T449] ? __kernel_text_address (kernel/extable.c:79) 
[ 56.101710][ T449] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 56.102003][ T449] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 56.102362][ T449] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 56.102679][ T449] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 56.102984][ T449] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 56.103281][ T449] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 56.103583][ T449] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 56.103812][ T449] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 56.104104][ T449] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 56.104408][ T449] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 56.104720][ T449] ? 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) 
[ 56.105037][ T449] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 56.105362][ T449] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 56.105727][ T449] ? __create_object (mm/kmemleak.c:751) 
[ 56.106027][ T449] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 56.106330][ T449] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 56.106545][ T449] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 56.106833][ T449] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 56.107108][ T449] ? 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) 
[ 56.107399][ T449] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 56.107633][ T449] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 56.107938][ T449] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 56.108238][ T449] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 56.108535][ T449] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 56.108862][ T449] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 56.109154][ T449] ? 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) 
[ 56.109456][ T449] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 56.109765][ T449] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 56.110066][ T449] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 56.110379][ T449] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 56.110691][ T449] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 56.110971][ T449] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 56.111276][ T449] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 56.111574][ T449] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 56.111860][ T449] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 56.112172][ T449] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 56.112538][ T449] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 56.112840][ T449] ___sys_sendmsg (net/socket.c:2653) 
[ 56.113142][ T449] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 56.113439][ T449] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 56.113724][ T449] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 56.114023][ T449] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 56.114400][ T449] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 56.114693][ T449] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 56.114997][ T449] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 56.115359][ T449] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 56.115662][ T449] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 56.115961][ T449] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 56.116258][ T449] ? __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) 
[ 56.116584][ T449] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 56.116871][ T449] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   56.117238][  T449] RIP: 0033:0x7f760fcd97b7
[ 56.117541][ T449] 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)
[   56.118567][  T449] RSP: 002b:00007ffe30a88de8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   56.119005][  T449] RAX: ffffffffffffffda RBX: 00007ffe30a89510 RCX: 00007f760fcd97b7
[   56.119433][  T449] RDX: 0000000000000000 RSI: 00007ffe30a88e50 RDI: 0000000000000005
[   56.119884][  T449] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   56.120327][  T449] R10: 0000000029e0e910 R11: 0000000000000246 R12: 0000000000000004
[   56.120746][  T449] R13: 0000000066bea26b R14: 0000000000496600 R15: 0000000000000000
| [   56.124587][  T449] 1 lock held by ip/449:
| [ 56.124824][ T449] #0: ffffffff961bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   56.125513][  T449]
| [   56.125513][  T449] stack backtrace:
[   56.126266][  T449] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   56.127096][  T449] Call Trace:
[   56.127320][  T449]  <TASK>
[ 56.127489][ T449] dump_stack_lvl (lib/dump_stack.c:122) 
[ 56.127777][ T449] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 56.128064][ T449] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 56.128494][ T449] 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
[ 56.129093][ T449] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 56.129437][ T449] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 56.129803][ T449] br_add_if (net/bridge/br_if.c:692) bridge
[ 56.130158][ T449] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 56.130432][ T449] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 56.131011][ T449] do_setlink (net/core/rtnetlink.c:2907) 
[ 56.131308][ T449] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 56.131607][ T449] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 56.131903][ T449] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 56.132186][ T449] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 56.132479][ T449] ? __kernel_text_address (kernel/extable.c:79) 
[ 56.132772][ T449] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 56.133414][ T449] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 56.133777][ T449] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 56.134255][ T449] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 56.134544][ T449] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 56.134850][ T449] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 56.135134][ T449] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 56.135555][ T449] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 56.135846][ T449] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 56.136316][ T449] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 56.136602][ T449] ? 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) 
[ 56.137047][ T449] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 56.137348][ T449] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 56.137691][ T449] ? __create_object (mm/kmemleak.c:751) 
[ 56.137976][ T449] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 56.138438][ T449] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 56.138832][ T449] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 56.139117][ T449] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 56.139394][ T449] ? 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) 
[ 56.139700][ T449] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 56.140119][ T449] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 56.140422][ T449] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 56.140697][ T449] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 56.140997][ T449] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 56.141302][ T449] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 56.141595][ T449] ? 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) 
[ 56.142052][ T449] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 56.142338][ T449] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 56.142622][ T449] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 56.142905][ T449] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 56.143189][ T449] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 56.143471][ T449] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 56.143756][ T449] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 56.144053][ T449] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 56.144329][ T449] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 56.144608][ T449] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 56.144967][ T449] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 56.145434][ T449] ___sys_sendmsg (net/socket.c:2653) 
[ 56.145721][ T449] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 56.146006][ T449] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 56.146287][ T449] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 56.146725][ T449] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 56.147058][ T449] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 56.147331][ T449] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 56.147601][ T449] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 56.148090][ T449] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 56.148360][ T449] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 56.148622][ T449] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 56.148893][ T449] ? __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) 
[ 56.149183][ T449] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 56.149451][ T449] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   56.149774][  T449] RIP: 0033:0x7f760fcd97b7
[ 56.150038][ T449] 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)
[   56.150989][  T449] RSP: 002b:00007ffe30a88de8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   56.151417][  T449] RAX: ffffffffffffffda RBX: 00007ffe30a89510 RCX: 00007f760fcd97b7
[   56.151975][  T449] RDX: 0000000000000000 RSI: 00007ffe30a88e50 RDI: 0000000000000005
[   56.152358][  T449] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   56.152924][  T449] R10: 0000000029e0e910 R11: 0000000000000246 R12: 0000000000000004
[   56.153306][  T449] R13: 0000000066bea26b R14: 0000000000496600 R15: 0000000000000000
| [   56.156808][  T449] 1 lock held by ip/449:
| [ 56.157024][ T449] #0: ffffffff961bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   56.157546][  T449]
| [   56.157546][  T449] stack backtrace:
[   56.158301][  T449] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   56.158947][  T449] Call Trace:
[   56.159333][  T449]  <TASK>
[ 56.159485][ T449] dump_stack_lvl (lib/dump_stack.c:122) 
[ 56.159773][ T449] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 56.160047][ T449] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 56.160647][ T449] br_get_link_af_size_filtered (net/bridge/br_private.h:1611 net/bridge/br_private.h:1608 net/bridge/br_netlink.c:107) bridge
[ 56.161052][ T449] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 56.161546][ T449] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 56.161896][ T449] br_add_if (net/bridge/br_if.c:692) bridge
[ 56.162407][ T449] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 56.162699][ T449] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 56.163063][ T449] do_setlink (net/core/rtnetlink.c:2907) 
[ 56.163354][ T449] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 56.163820][ T449] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 56.164095][ T449] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 56.164372][ T449] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 56.164645][ T449] ? __kernel_text_address (kernel/extable.c:79) 
[ 56.165120][ T449] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 56.165400][ T449] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 56.165750][ T449] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 56.166226][ T449] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 56.166494][ T449] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 56.166771][ T449] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 56.167037][ T449] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 56.167255][ T449] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 56.167915][ T449] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 56.168202][ T449] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 56.168657][ T449] ? 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) 
[ 56.168927][ T449] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 56.169390][ T449] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 56.169907][ T449] ? __create_object (mm/kmemleak.c:751) 
[ 56.170361][ T449] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 56.170825][ T449] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 56.171222][ T449] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 56.171850][ T449] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 56.172132][ T449] ? 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) 
[ 56.172570][ T449] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 56.172958][ T449] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 56.173254][ T449] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 56.173723][ T449] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 56.173999][ T449] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 56.174289][ T449] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 56.174578][ T449] ? 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) 
[ 56.175047][ T449] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 56.175346][ T449] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 56.175620][ T449] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 56.175905][ T449] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 56.176176][ T449] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 56.176449][ T449] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 56.176724][ T449] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 56.177002][ T449] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 56.177272][ T449] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 56.177525][ T449] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 56.177861][ T449] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 56.178140][ T449] ___sys_sendmsg (net/socket.c:2653) 
[ 56.178399][ T449] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 56.178683][ T449] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 56.178972][ T449] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 56.179248][ T449] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 56.179606][ T449] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 56.180049][ T449] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 56.180315][ T449] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 56.180643][ T449] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 56.180918][ T449] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 56.181337][ T449] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 56.181592][ T449] ? __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) 
[ 56.181893][ T449] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 56.182152][ T449] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   56.182647][  T449] RIP: 0033:0x7f760fcd97b7
[ 56.182910][ T449] 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)
[   56.183993][  T449] RSP: 002b:00007ffe30a88de8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   56.184567][  T449] RAX: ffffffffffffffda RBX: 00007ffe30a89510 RCX: 00007f760fcd97b7
[   56.184969][  T449] RDX: 0000000000000000 RSI: 00007ffe30a88e50 RDI: 0000000000000005
[   56.185563][  T449] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   56.185920][  T449] R10: 0000000029e0e910 R11: 0000000000000246 R12: 0000000000000004


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