======================================
| [ 42.535322][ T323] #0: ffffffffa8dbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 42.535731][ T323] #1: ffff88800620ac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   42.536215][  T323]
| [   42.536215][  T323] stack backtrace:
[   42.536812][  T323] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   42.537273][  T323] Call Trace:
[   42.537426][  T323]  <TASK>
[ 42.537540][ T323] dump_stack_lvl (lib/dump_stack.c:122) 
[ 42.537764][ T323] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 42.537968][ T323] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 42.538287][ T323] 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
[ 42.538642][ T323] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 42.538838][ T323] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 42.539058][ T323] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 42.539320][ T323] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 42.539558][ T323] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 42.539842][ T323] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 42.540064][ T323] br_add_if (net/bridge/br_if.c:687) bridge
[ 42.540322][ T323] do_setlink (net/core/rtnetlink.c:2907) 
[ 42.540541][ T323] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 42.540736][ T323] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 42.540933][ T323] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 42.541143][ T323] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 42.541355][ T323] ? __kernel_text_address (kernel/extable.c:79) 
[ 42.541554][ T323] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 42.541755][ T323] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 42.542010][ T323] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 42.542221][ T323] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 42.542447][ T323] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 42.542660][ T323] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 42.542896][ T323] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 42.543068][ T323] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 42.543293][ T323] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 42.543497][ T323] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 42.543733][ T323] ? 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) 
[ 42.543946][ T323] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 42.544177][ T323] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.544438][ T323] ? __create_object (mm/kmemleak.c:751) 
[ 42.544695][ T323] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 42.544901][ T323] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 42.545061][ T323] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 42.545277][ T323] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 42.545487][ T323] ? 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) 
[ 42.545699][ T323] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 42.545856][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 42.546083][ T323] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 42.546315][ T323] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 42.546532][ T323] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 42.546790][ T323] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 42.546994][ T323] ? 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) 
[ 42.547230][ T323] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 42.547447][ T323] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 42.547672][ T323] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 42.547898][ T323] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 42.548164][ T323] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 42.548362][ T323] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 42.548578][ T323] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 42.548801][ T323] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 42.549020][ T323] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 42.549238][ T323] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 42.549498][ T323] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 42.549710][ T323] ___sys_sendmsg (net/socket.c:2653) 
[ 42.549931][ T323] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 42.550131][ T323] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 42.550335][ T323] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 42.550536][ T323] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 42.550855][ T323] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 42.551099][ T323] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 42.551306][ T323] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.551566][ T323] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 42.551783][ T323] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 42.551997][ T323] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 42.552199][ T323] ? __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) 
[ 42.552439][ T323] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 42.552658][ T323] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   42.552914][  T323] RIP: 0033:0x7f24035267b7
[ 42.553201][ T323] 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)
[   42.553990][  T323] RSP: 002b:00007fff3268aac8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   42.554347][  T323] RAX: ffffffffffffffda RBX: 00007fff3268b1f0 RCX: 00007f24035267b7
[   42.554691][  T323] RDX: 0000000000000000 RSI: 00007fff3268ab30 RDI: 0000000000000005
[   42.555002][  T323] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   42.555335][  T323] R10: 000000001ba37910 R11: 0000000000000246 R12: 0000000000000004
[   42.555665][  T323] R13: 0000000066be9ad8 R14: 0000000000496600 R15: 0000000000000000
| [ 42.558723][ T323] #0: ffffffffa8dbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 42.559118][ T323] #1: ffff88800620ac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   42.559535][  T323]
| [   42.559535][  T323] stack backtrace:
[   42.560103][  T323] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   42.560607][  T323] Call Trace:
[   42.560775][  T323]  <TASK>
[ 42.560882][ T323] dump_stack_lvl (lib/dump_stack.c:122) 
[ 42.561121][ T323] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 42.561330][ T323] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 42.561625][ T323] 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
[ 42.561933][ T323] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 42.562171][ T323] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 42.562438][ T323] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 42.562719][ T323] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 42.563063][ T323] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 42.563374][ T323] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 42.563611][ T323] br_add_if (net/bridge/br_if.c:687) bridge
[ 42.563882][ T323] do_setlink (net/core/rtnetlink.c:2907) 
[ 42.564102][ T323] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 42.564324][ T323] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 42.564563][ T323] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 42.564769][ T323] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 42.565002][ T323] ? __kernel_text_address (kernel/extable.c:79) 
[ 42.565214][ T323] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 42.565416][ T323] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 42.565667][ T323] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 42.565885][ T323] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 42.566091][ T323] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 42.566302][ T323] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 42.566503][ T323] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 42.566669][ T323] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 42.566875][ T323] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 42.567089][ T323] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 42.567307][ T323] ? 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) 
[ 42.567525][ T323] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 42.567736][ T323] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.567997][ T323] ? __create_object (mm/kmemleak.c:751) 
[ 42.568204][ T323] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 42.568408][ T323] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 42.568562][ T323] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 42.568770][ T323] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 42.568987][ T323] ? 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) 
[ 42.569203][ T323] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 42.569375][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 42.569595][ T323] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 42.569806][ T323] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 42.570015][ T323] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 42.570233][ T323] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 42.570444][ T323] ? 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) 
[ 42.570652][ T323] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 42.570863][ T323] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 42.571107][ T323] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 42.571333][ T323] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 42.571548][ T323] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 42.571983][ T323] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 42.572226][ T323] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 42.572450][ T323] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 42.572678][ T323] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 42.573041][ T323] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 42.573317][ T323] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 42.573546][ T323] ___sys_sendmsg (net/socket.c:2653) 
[ 42.573780][ T323] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 42.574197][ T323] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 42.574458][ T323] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 42.574661][ T323] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 42.574940][ T323] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 42.575266][ T323] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 42.575494][ T323] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.575752][ T323] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 42.575987][ T323] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 42.576193][ T323] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 42.576397][ T323] ? __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) 
[ 42.576622][ T323] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 42.576839][ T323] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   42.577202][  T323] RIP: 0033:0x7f24035267b7
[ 42.577426][ T323] 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)
[   42.578272][  T323] RSP: 002b:00007fff3268aac8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   42.578593][  T323] RAX: ffffffffffffffda RBX: 00007fff3268b1f0 RCX: 00007f24035267b7
[   42.578908][  T323] RDX: 0000000000000000 RSI: 00007fff3268ab30 RDI: 0000000000000005
[   42.579348][  T323] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   42.579672][  T323] R10: 000000001ba37910 R11: 0000000000000246 R12: 0000000000000004
[   42.580005][  T323] R13: 0000000066be9ad8 R14: 0000000000496600 R15: 0000000000000000
| [ 42.583731][ T323] #0: ffffffffa8dbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 42.584486][ T323] #1: ffff88800620ac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   42.584891][  T323]
| [   42.584891][  T323] stack backtrace:
[   42.585476][  T323] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   42.586032][  T323] Call Trace:
[   42.586182][  T323]  <TASK>
[ 42.586422][ T323] dump_stack_lvl (lib/dump_stack.c:122) 
[ 42.586636][ T323] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 42.586837][ T323] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 42.587139][ T323] 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
[ 42.587424][ T323] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 42.587623][ T323] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 42.587825][ T323] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 42.588066][ T323] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 42.588295][ T323] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 42.588578][ T323] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 42.588805][ T323] br_add_if (net/bridge/br_if.c:687) bridge
[ 42.589067][ T323] do_setlink (net/core/rtnetlink.c:2907) 
[ 42.589402][ T323] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 42.589604][ T323] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 42.589807][ T323] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 42.590028][ T323] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 42.590231][ T323] ? __kernel_text_address (kernel/extable.c:79) 
[ 42.590429][ T323] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 42.590626][ T323] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 42.590879][ T323] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 42.591095][ T323] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 42.591296][ T323] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 42.591493][ T323] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 42.591694][ T323] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 42.591869][ T323] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 42.592195][ T323] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 42.592404][ T323] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 42.592617][ T323] ? 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) 
[ 42.592837][ T323] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 42.593216][ T323] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.593468][ T323] ? __create_object (mm/kmemleak.c:751) 
[ 42.593669][ T323] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 42.593906][ T323] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 42.594178][ T323] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 42.594395][ T323] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 42.594592][ T323] ? 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) 
[ 42.594812][ T323] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 42.594990][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 42.595317][ T323] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 42.595524][ T323] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 42.595726][ T323] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 42.596025][ T323] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 42.596343][ T323] ? 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) 
[ 42.596592][ T323] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 42.596895][ T323] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 42.597119][ T323] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 42.597330][ T323] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 42.597539][ T323] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 42.597751][ T323] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 42.597995][ T323] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 42.598226][ T323] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 42.598495][ T323] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 42.598781][ T323] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 42.599051][ T323] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 42.599272][ T323] ___sys_sendmsg (net/socket.c:2653) 
[ 42.599509][ T323] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 42.599696][ T323] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 42.599921][ T323] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 42.600108][ T323] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 42.600486][ T323] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 42.600711][ T323] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 42.600978][ T323] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.601353][ T323] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 42.601581][ T323] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 42.601775][ T323] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 42.602020][ T323] ? __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) 
[ 42.602318][ T323] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 42.602698][ T323] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   42.602971][  T323] RIP: 0033:0x7f24035267b7
[ 42.603199][ T323] 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)
[   42.604125][  T323] RSP: 002b:00007fff3268aac8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   42.604433][  T323] RAX: ffffffffffffffda RBX: 00007fff3268b1f0 RCX: 00007f24035267b7
[   42.604904][  T323] RDX: 0000000000000000 RSI: 00007fff3268ab30 RDI: 0000000000000005
[   42.605282][  T323] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   42.605614][  T323] R10: 000000001ba37910 R11: 0000000000000246 R12: 0000000000000004


Finger prints:
lockdep_rcu_suspicious:br_get_link_af_size_filtered:br_info_notify:br_make_forwarding:br_port_state_selection