======================================
| [ 65.987756][ T568] #0: ffffffffbcdbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 65.988145][ T568] #1: ffff8880058fac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   65.988579][  T568]
| [   65.988579][  T568] stack backtrace:
[   65.989114][  T568] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   65.989548][  T568] Call Trace:
[   65.989720][  T568]  <TASK>
[ 65.989824][ T568] dump_stack_lvl (lib/dump_stack.c:122) 
[ 65.990028][ T568] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 65.990231][ T568] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 65.990523][ T568] 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
[ 65.990832][ T568] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 65.991047][ T568] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 65.991254][ T568] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 65.991516][ T568] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 65.991762][ T568] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 65.992055][ T568] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 65.992310][ T568] br_add_if (net/bridge/br_if.c:687) bridge
[ 65.992579][ T568] do_setlink (net/core/rtnetlink.c:2907) 
[ 65.992781][ T568] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 65.992999][ T568] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 65.993210][ T568] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 65.993404][ T568] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 65.993643][ T568] ? __kernel_text_address (kernel/extable.c:79) 
[ 65.993836][ T568] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 65.994035][ T568] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 65.994326][ T568] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 65.994557][ T568] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 65.994785][ T568] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 65.995003][ T568] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 65.995204][ T568] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 65.995383][ T568] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 65.995594][ T568] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 65.995827][ T568] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 65.996036][ T568] ? 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) 
[ 65.996252][ T568] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 65.996480][ T568] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 65.996734][ T568] ? __create_object (mm/kmemleak.c:751) 
[ 65.996952][ T568] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 65.997170][ T568] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 65.997344][ T568] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 65.997569][ T568] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 65.997766][ T568] ? 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) 
[ 65.997972][ T568] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 65.998142][ T568] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 65.998364][ T568] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 65.998580][ T568] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 65.998807][ T568] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 65.999035][ T568] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 65.999247][ T568] ? 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) 
[ 65.999463][ T568] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 65.999673][ T568] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 65.999903][ T568] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 66.000147][ T568] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 66.000354][ T568] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 66.000574][ T568] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 66.000772][ T568] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 66.000981][ T568] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 66.001199][ T568] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 66.001404][ T568] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 66.001672][ T568] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 66.001891][ T568] ___sys_sendmsg (net/socket.c:2653) 
[ 66.002094][ T568] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 66.002318][ T568] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 66.002543][ T568] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 66.002750][ T568] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 66.003022][ T568] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 66.003225][ T568] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 66.003448][ T568] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 66.003705][ T568] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 66.003915][ T568] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 66.004126][ T568] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 66.004334][ T568] ? __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) 
[ 66.004564][ T568] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 66.004790][ T568] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   66.005043][  T568] RIP: 0033:0x7f0c3718c7b7
[ 66.005249][ T568] 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)
[   66.005938][  T568] RSP: 002b:00007ffea934dff8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   66.006234][  T568] RAX: ffffffffffffffda RBX: 00007ffea934e720 RCX: 00007f0c3718c7b7
[   66.006528][  T568] RDX: 0000000000000000 RSI: 00007ffea934e060 RDI: 0000000000000005
[   66.006819][  T568] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   66.007106][  T568] R10: 0000000008005910 R11: 0000000000000246 R12: 0000000000000004
[   66.007391][  T568] R13: 0000000066bea245 R14: 0000000000496600 R15: 0000000000000000
| [ 66.009875][ T568] #0: ffffffffbcdbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 66.010223][ T568] #1: ffff8880058fac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   66.010626][  T568]
| [   66.010626][  T568] stack backtrace:
[   66.011143][  T568] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   66.011726][  T568] Call Trace:
[   66.011877][  T568]  <TASK>
[ 66.011980][ T568] dump_stack_lvl (lib/dump_stack.c:122) 
[ 66.012185][ T568] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 66.012545][ T568] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 66.012865][ T568] 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
[ 66.013151][ T568] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 66.013348][ T568] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 66.013657][ T568] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 66.013881][ T568] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 66.014100][ T568] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 66.014378][ T568] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 66.014726][ T568] br_add_if (net/bridge/br_if.c:687) bridge
[ 66.014975][ T568] do_setlink (net/core/rtnetlink.c:2907) 
[ 66.015201][ T568] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 66.015405][ T568] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 66.015737][ T568] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 66.016073][ T568] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 66.016296][ T568] ? __kernel_text_address (kernel/extable.c:79) 
[ 66.016539][ T568] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 66.016736][ T568] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 66.016994][ T568] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 66.017213][ T568] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 66.017436][ T568] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 66.017642][ T568] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 66.017987][ T568] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 66.018142][ T568] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 66.018346][ T568] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 66.018559][ T568] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 66.018765][ T568] ? 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) 
[ 66.018979][ T568] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 66.019200][ T568] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 66.019609][ T568] ? __create_object (mm/kmemleak.c:751) 
[ 66.019822][ T568] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 66.020023][ T568] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 66.020184][ T568] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 66.020397][ T568] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 66.020607][ T568] ? 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) 
[ 66.020938][ T568] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 66.021145][ T568] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 66.021484][ T568] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 66.021684][ T568] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 66.021907][ T568] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 66.022116][ T568] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 66.022324][ T568] ? 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) 
[ 66.022643][ T568] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 66.022850][ T568] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 66.023055][ T568] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 66.023280][ T568] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 66.023506][ T568] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 66.023709][ T568] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 66.024052][ T568] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 66.024261][ T568] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 66.024476][ T568] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 66.024686][ T568] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 66.025104][ T568] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 66.025317][ T568] ___sys_sendmsg (net/socket.c:2653) 
[ 66.025534][ T568] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 66.025876][ T568] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 66.026087][ T568] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 66.026314][ T568] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 66.026562][ T568] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 66.026767][ T568] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 66.027077][ T568] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 66.027457][ T568] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 66.027669][ T568] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 66.027865][ T568] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 66.028207][ T568] ? __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) 
[ 66.028457][ T568] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 66.028656][ T568] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   66.028902][  T568] RIP: 0033:0x7f0c3718c7b7
[ 66.029343][ T568] 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)
[   66.030011][  T568] RSP: 002b:00007ffea934dff8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   66.030436][  T568] RAX: ffffffffffffffda RBX: 00007ffea934e720 RCX: 00007f0c3718c7b7
[   66.030733][  T568] RDX: 0000000000000000 RSI: 00007ffea934e060 RDI: 0000000000000005
[   66.031030][  T568] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   66.031332][  T568] R10: 0000000008005910 R11: 0000000000000246 R12: 0000000000000004
[   66.031633][  T568] R13: 0000000066bea245 R14: 0000000000496600 R15: 0000000000000000
| [ 66.034551][ T568] #0: ffffffffbcdbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 66.034916][ T568] #1: ffff8880058fac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   66.035445][  T568]
| [   66.035445][  T568] stack backtrace:
[   66.035978][  T568] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   66.036412][  T568] Call Trace:
[   66.036566][  T568]  <TASK>
[ 66.036669][ T568] dump_stack_lvl (lib/dump_stack.c:122) 
[ 66.036874][ T568] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 66.037073][ T568] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 66.037345][ T568] 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
[ 66.037744][ T568] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 66.037941][ T568] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 66.038137][ T568] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 66.038372][ T568] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 66.038596][ T568] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 66.038985][ T568] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 66.039206][ T568] br_add_if (net/bridge/br_if.c:687) bridge
[ 66.039436][ T568] do_setlink (net/core/rtnetlink.c:2907) 
[ 66.039629][ T568] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 66.039940][ T568] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 66.040144][ T568] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 66.040339][ T568] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 66.040536][ T568] ? __kernel_text_address (kernel/extable.c:79) 
[ 66.040736][ T568] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 66.041071][ T568] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 66.041312][ T568] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 66.041520][ T568] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 66.041846][ T568] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 66.042050][ T568] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 66.042256][ T568] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 66.042408][ T568] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 66.042728][ T568] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 66.042928][ T568] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 66.043132][ T568] ? 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) 
[ 66.043331][ T568] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 66.043540][ T568] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 66.043913][ T568] ? __create_object (mm/kmemleak.c:751) 
[ 66.044115][ T568] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 66.044316][ T568] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 66.044467][ T568] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 66.044703][ T568] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 66.044974][ T568] ? 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) 
[ 66.045308][ T568] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 66.045468][ T568] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 66.045673][ T568] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 66.045867][ T568] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 66.046061][ T568] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 66.046285][ T568] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 66.046486][ T568] ? 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) 
[ 66.046920][ T568] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 66.047114][ T568] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 66.047318][ T568] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 66.047524][ T568] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 66.047857][ T568] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 66.048076][ T568] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 66.048292][ T568] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 66.048618][ T568] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 66.048810][ T568] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 66.049008][ T568] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 66.049243][ T568] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 66.049452][ T568] ___sys_sendmsg (net/socket.c:2653) 
[ 66.049756][ T568] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 66.049948][ T568] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 66.050153][ T568] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 66.050337][ T568] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 66.050686][ T568] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 66.050878][ T568] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 66.051081][ T568] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 66.051321][ T568] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 66.051652][ T568] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 66.051849][ T568] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 66.052037][ T568] ? __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) 
[ 66.052283][ T568] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 66.052582][ T568] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   66.052820][  T568] RIP: 0033:0x7f0c3718c7b7
[ 66.053012][ T568] 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)
[   66.053809][  T568] RSP: 002b:00007ffea934dff8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   66.054089][  T568] RAX: ffffffffffffffda RBX: 00007ffea934e720 RCX: 00007f0c3718c7b7
[   66.054515][  T568] RDX: 0000000000000000 RSI: 00007ffea934e060 RDI: 0000000000000005
[   66.054814][  T568] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   66.055102][  T568] R10: 0000000008005910 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