======================================
| [ 85.078999][ T715] #0: ffffffffbd3bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 85.079339][ T715] #1: ffff888006dbac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   85.079752][  T715]
| [   85.079752][  T715] stack backtrace:
[   85.080276][  T715] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   85.080687][  T715] Call Trace:
[   85.080836][  T715]  <TASK>
[ 85.080939][ T715] dump_stack_lvl (lib/dump_stack.c:122) 
[ 85.081131][ T715] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 85.081334][ T715] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 85.081605][ T715] 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
[ 85.081865][ T715] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 85.082055][ T715] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 85.082245][ T715] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 85.082464][ T715] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 85.082688][ T715] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 85.082955][ T715] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 85.083178][ T715] br_add_if (net/bridge/br_if.c:687) bridge
[ 85.083404][ T715] do_setlink (net/core/rtnetlink.c:2907) 
[ 85.083590][ T715] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 85.083785][ T715] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 85.083968][ T715] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 85.084156][ T715] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 85.084348][ T715] ? __kernel_text_address (kernel/extable.c:79) 
[ 85.084540][ T715] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 85.084725][ T715] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 85.084957][ T715] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 85.085158][ T715] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 85.085356][ T715] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 85.085541][ T715] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 85.085739][ T715] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 85.085884][ T715] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 85.086104][ T715] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 85.086301][ T715] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 85.086525][ T715] ? 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) 
[ 85.086739][ T715] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 85.086935][ T715] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 85.087166][ T715] ? __create_object (mm/kmemleak.c:751) 
[ 85.087368][ T715] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 85.087570][ T715] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 85.087712][ T715] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 85.087926][ T715] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 85.088127][ T715] ? 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) 
[ 85.088312][ T715] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 85.088458][ T715] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 85.088645][ T715] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 85.088834][ T715] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 85.089033][ T715] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 85.089239][ T715] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 85.089428][ T715] ? 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) 
[ 85.089615][ T715] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 85.089809][ T715] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 85.089994][ T715] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 85.090183][ T715] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 85.090379][ T715] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 85.090585][ T715] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 85.090774][ T715] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 85.090966][ T715] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 85.091156][ T715] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 85.091348][ T715] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 85.091589][ T715] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 85.091786][ T715] ___sys_sendmsg (net/socket.c:2653) 
[ 85.091973][ T715] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 85.092197][ T715] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 85.092393][ T715] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 85.092634][ T715] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 85.092863][ T715] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 85.093050][ T715] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 85.093265][ T715] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 85.093495][ T715] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 85.093715][ T715] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 85.093923][ T715] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 85.094113][ T715] ? __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) 
[ 85.094361][ T715] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 85.094549][ T715] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   85.094806][  T715] RIP: 0033:0x7f1e1aeb67b7
[ 85.095024][ T715] 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)
[   85.095695][  T715] RSP: 002b:00007ffdd5385d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   85.096024][  T715] RAX: ffffffffffffffda RBX: 00007ffdd53864c0 RCX: 00007f1e1aeb67b7
[   85.096319][  T715] RDX: 0000000000000000 RSI: 00007ffdd5385e00 RDI: 0000000000000005
[   85.096602][  T715] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   85.096910][  T715] R10: 000000002ddc4910 R11: 0000000000000246 R12: 0000000000000004
[   85.097187][  T715] R13: 0000000066bea16e R14: 0000000000496600 R15: 0000000000000000
| [ 85.099582][ T715] #0: ffffffffbd3bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 85.099939][ T715] #1: ffff888006dbac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   85.100333][  T715]
| [   85.100333][  T715] stack backtrace:
[   85.100935][  T715] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   85.101391][  T715] Call Trace:
[   85.101586][  T715]  <TASK>
[ 85.101689][ T715] dump_stack_lvl (lib/dump_stack.c:122) 
[ 85.101887][ T715] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 85.102072][ T715] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 85.102344][ T715] 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
[ 85.102610][ T715] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 85.102794][ T715] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 85.102991][ T715] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 85.103222][ T715] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 85.103440][ T715] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 85.103702][ T715] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 85.103924][ T715] br_add_if (net/bridge/br_if.c:687) bridge
[ 85.104191][ T715] do_setlink (net/core/rtnetlink.c:2907) 
[ 85.104384][ T715] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 85.104576][ T715] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 85.104767][ T715] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 85.104952][ T715] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 85.105139][ T715] ? __kernel_text_address (kernel/extable.c:79) 
[ 85.105323][ T715] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 85.105511][ T715] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 85.105738][ T715] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 85.105933][ T715] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 85.106127][ T715] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 85.106315][ T715] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 85.106500][ T715] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 85.106644][ T715] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 85.106839][ T715] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 85.107036][ T715] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 85.107231][ T715] ? 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) 
[ 85.107420][ T715] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 85.107623][ T715] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 85.107856][ T715] ? __create_object (mm/kmemleak.c:751) 
[ 85.108046][ T715] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 85.108247][ T715] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 85.108389][ T715] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 85.108584][ T715] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 85.108772][ T715] ? 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) 
[ 85.108970][ T715] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 85.109126][ T715] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 85.109337][ T715] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 85.109528][ T715] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 85.109727][ T715] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 85.109925][ T715] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 85.110114][ T715] ? 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) 
[ 85.110505][ T715] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 85.110693][ T715] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 85.110880][ T715] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 85.111075][ T715] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 85.111395][ T715] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 85.111578][ T715] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 85.111803][ T715] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 85.111998][ T715] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 85.112314][ T715] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 85.112502][ T715] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 85.112730][ T715] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 85.112934][ T715] ___sys_sendmsg (net/socket.c:2653) 
[ 85.113232][ T715] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 85.113470][ T715] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 85.113670][ T715] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 85.113889][ T715] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 85.114257][ T715] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 85.114462][ T715] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 85.114679][ T715] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 85.114933][ T715] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 85.115257][ T715] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 85.115443][ T715] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 85.115656][ T715] ? __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) 
[ 85.115882][ T715] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 85.116315][ T715] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   85.116570][  T715] RIP: 0033:0x7f1e1aeb67b7
[ 85.116770][ T715] 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)
[   85.117578][  T715] RSP: 002b:00007ffdd5385d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   85.117884][  T715] RAX: ffffffffffffffda RBX: 00007ffdd53864c0 RCX: 00007f1e1aeb67b7
[   85.118328][  T715] RDX: 0000000000000000 RSI: 00007ffdd5385e00 RDI: 0000000000000005
[   85.118622][  T715] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   85.118921][  T715] R10: 000000002ddc4910 R11: 0000000000000246 R12: 0000000000000004
[   85.119341][  T715] R13: 0000000066bea16e R14: 0000000000496600 R15: 0000000000000000
| [ 85.122178][ T715] #0: ffffffffbd3bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 85.122551][ T715] #1: ffff888006dbac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   85.122951][  T715]
| [   85.122951][  T715] stack backtrace:
[   85.123596][  T715] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   85.124111][  T715] Call Trace:
[   85.124252][  T715]  <TASK>
[ 85.124348][ T715] dump_stack_lvl (lib/dump_stack.c:122) 
[ 85.124538][ T715] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 85.124721][ T715] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 85.125089][ T715] 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
[ 85.125355][ T715] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 85.125535][ T715] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 85.125721][ T715] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 85.126048][ T715] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 85.126265][ T715] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 85.126525][ T715] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 85.126736][ T715] br_add_if (net/bridge/br_if.c:687) bridge
[ 85.127068][ T715] do_setlink (net/core/rtnetlink.c:2907) 
[ 85.127266][ T715] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 85.127452][ T715] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 85.127634][ T715] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 85.127925][ T715] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 85.128111][ T715] ? __kernel_text_address (kernel/extable.c:79) 
[ 85.128291][ T715] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 85.128475][ T715] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 85.128854][ T715] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 85.129051][ T715] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 85.129276][ T715] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 85.129482][ T715] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 85.129788][ T715] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 85.129935][ T715] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 85.130155][ T715] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 85.130372][ T715] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 85.130565][ T715] ? 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) 
[ 85.130896][ T715] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 85.131098][ T715] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 85.131363][ T715] ? __create_object (mm/kmemleak.c:751) 
[ 85.131584][ T715] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 85.132020][ T715] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 85.132168][ T715] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 85.132353][ T715] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 85.132555][ T715] ? 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) 
[ 85.132876][ T715] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 85.133041][ T715] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 85.133240][ T715] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 85.133439][ T715] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 85.133649][ T715] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 85.133992][ T715] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 85.134204][ T715] ? 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) 
[ 85.134419][ T715] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 85.134617][ T715] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 85.134935][ T715] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 85.135147][ T715] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 85.135351][ T715] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 85.135556][ T715] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 85.135873][ T715] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 85.136082][ T715] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 85.136272][ T715] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 85.136464][ T715] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 85.136798][ T715] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 85.136994][ T715] ___sys_sendmsg (net/socket.c:2653) 
[ 85.137211][ T715] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 85.137399][ T715] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 85.137617][ T715] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 85.137937][ T715] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 85.138174][ T715] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 85.138391][ T715] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 85.138581][ T715] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 85.138958][ T715] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 85.139166][ T715] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 85.139364][ T715] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 85.139571][ T715] ? __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) 
[ 85.139914][ T715] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 85.140108][ T715] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   85.140361][  T715] RIP: 0033:0x7f1e1aeb67b7
[ 85.140563][ T715] 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)
[   85.141383][  T715] RSP: 002b:00007ffdd5385d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   85.141789][  T715] RAX: ffffffffffffffda RBX: 00007ffdd53864c0 RCX: 00007f1e1aeb67b7
[   85.142091][  T715] RDX: 0000000000000000 RSI: 00007ffdd5385e00 RDI: 0000000000000005
[   85.142390][  T715] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   85.142771][  T715] R10: 000000002ddc4910 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