======================================
| [ 35.549462][ T320] #0: ffffffff8c9bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 35.549886][ T320] #1: ffff8880057dac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   35.550322][  T320]
| [   35.550322][  T320] stack backtrace:
[   35.550859][  T320] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.551294][  T320] Call Trace:
[   35.551447][  T320]  <TASK>
[ 35.551550][ T320] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.551754][ T320] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.551950][ T320] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 35.552225][ T320] 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
[ 35.552494][ T320] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 35.552690][ T320] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 35.552896][ T320] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 35.553125][ T320] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 35.553354][ T320] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 35.553636][ T320] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 35.553863][ T320] br_add_if (net/bridge/br_if.c:687) bridge
[ 35.554111][ T320] do_setlink (net/core/rtnetlink.c:2907) 
[ 35.554312][ T320] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 35.554518][ T320] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 35.554720][ T320] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 35.554921][ T320] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.555125][ T320] ? __kernel_text_address (kernel/extable.c:79) 
[ 35.555326][ T320] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 35.555522][ T320] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 35.555775][ T320] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.555988][ T320] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.556188][ T320] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.556388][ T320] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 35.556593][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.556748][ T320] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 35.556952][ T320] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 35.557156][ T320] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 35.557361][ T320] ? 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) 
[ 35.557563][ T320] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 35.557769][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.558013][ T320] ? __create_object (mm/kmemleak.c:751) 
[ 35.558212][ T320] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.558416][ T320] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 35.558566][ T320] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.558764][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.558959][ T320] ? 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) 
[ 35.559156][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.559317][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.559523][ T320] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.559718][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.559921][ T320] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.560138][ T320] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.560335][ T320] ? 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) 
[ 35.560539][ T320] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.560743][ T320] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.560941][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.561148][ T320] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.561349][ T320] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.561550][ T320] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.561752][ T320] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.561959][ T320] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.562160][ T320] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.562359][ T320] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.562609][ T320] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.562819][ T320] ___sys_sendmsg (net/socket.c:2653) 
[ 35.563018][ T320] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.563215][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.563417][ T320] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.563619][ T320] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 35.563861][ T320] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.564074][ T320] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.564279][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.564529][ T320] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.564731][ T320] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.564930][ T320] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.565131][ T320] ? __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) 
[ 35.565354][ T320] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.565558][ T320] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.565808][  T320] RIP: 0033:0x7fbeeabd27b7
[ 35.566016][ T320] 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)
[   35.566698][  T320] RSP: 002b:00007fff62ec5e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.567000][  T320] RAX: ffffffffffffffda RBX: 00007fff62ec65b0 RCX: 00007fbeeabd27b7
[   35.567294][  T320] RDX: 0000000000000000 RSI: 00007fff62ec5ef0 RDI: 0000000000000005
[   35.567594][  T320] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   35.567889][  T320] R10: 0000000006e04910 R11: 0000000000000246 R12: 0000000000000004
[   35.568184][  T320] R13: 0000000066be9fba R14: 0000000000496600 R15: 0000000000000000
| [ 35.570728][ T320] #0: ffffffff8c9bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 35.571089][ T320] #1: ffff8880057dac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   35.571473][  T320]
| [   35.571473][  T320] stack backtrace:
[   35.572019][  T320] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.572450][  T320] Call Trace:
[   35.572601][  T320]  <TASK>
[ 35.572705][ T320] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.572913][ T320] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.573114][ T320] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 35.573389][ T320] 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
[ 35.573667][ T320] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 35.573862][ T320] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 35.574072][ T320] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 35.574303][ T320] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 35.574532][ T320] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 35.574810][ T320] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 35.575035][ T320] br_add_if (net/bridge/br_if.c:687) bridge
[ 35.575274][ T320] do_setlink (net/core/rtnetlink.c:2907) 
[ 35.575477][ T320] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 35.575677][ T320] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 35.575874][ T320] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 35.576072][ T320] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.576269][ T320] ? __kernel_text_address (kernel/extable.c:79) 
[ 35.576465][ T320] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 35.576660][ T320] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 35.576907][ T320] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.577117][ T320] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.577314][ T320] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.577510][ T320] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 35.577704][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.577857][ T320] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 35.578061][ T320] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 35.578261][ T320] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 35.578466][ T320] ? 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) 
[ 35.578669][ T320] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 35.578872][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.579121][ T320] ? __create_object (mm/kmemleak.c:751) 
[ 35.579326][ T320] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.579530][ T320] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 35.579682][ T320] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.579885][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.580085][ T320] ? 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) 
[ 35.580289][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.580447][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.580658][ T320] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.580856][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.581059][ T320] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.581274][ T320] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.581475][ T320] ? 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) 
[ 35.581679][ T320] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.581889][ T320] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.582088][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.582291][ T320] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.582501][ T320] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.582699][ T320] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.582898][ T320] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.583107][ T320] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.583308][ T320] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.583510][ T320] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.583752][ T320] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.583970][ T320] ___sys_sendmsg (net/socket.c:2653) 
[ 35.584169][ T320] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.584365][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.584563][ T320] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.584754][ T320] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 35.584997][ T320] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.585197][ T320] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.585397][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.585647][ T320] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.585853][ T320] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.586048][ T320] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.586240][ T320] ? __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) 
[ 35.586457][ T320] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.586655][ T320] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.586898][  T320] RIP: 0033:0x7fbeeabd27b7
[ 35.587096][ T320] 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)
[   35.587760][  T320] RSP: 002b:00007fff62ec5e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.588048][  T320] RAX: ffffffffffffffda RBX: 00007fff62ec65b0 RCX: 00007fbeeabd27b7
[   35.588640][  T320] RDX: 0000000000000000 RSI: 00007fff62ec5ef0 RDI: 0000000000000005
[   35.588952][  T320] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   35.589263][  T320] R10: 0000000006e04910 R11: 0000000000000246 R12: 0000000000000004
[   35.589701][  T320] R13: 0000000066be9fba R14: 0000000000496600 R15: 0000000000000000
| [ 35.592679][ T320] #0: ffffffff8c9bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 35.593060][ T320] #1: ffff8880057dac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   35.593463][  T320]
| [   35.593463][  T320] stack backtrace:
[   35.594156][  T320] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.594726][  T320] Call Trace:
[   35.594885][  T320]  <TASK>
[ 35.594995][ T320] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.595208][ T320] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.595418][ T320] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 35.595830][ T320] 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
[ 35.596121][ T320] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 35.596328][ T320] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 35.596541][ T320] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 35.596892][ T320] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 35.597133][ T320] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 35.597423][ T320] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 35.597663][ T320] br_add_if (net/bridge/br_if.c:687) bridge
[ 35.598020][ T320] do_setlink (net/core/rtnetlink.c:2907) 
[ 35.598230][ T320] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 35.598441][ T320] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 35.598652][ T320] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 35.598966][ T320] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.599180][ T320] ? __kernel_text_address (kernel/extable.c:79) 
[ 35.599389][ T320] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 35.599599][ T320] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 35.599969][ T320] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.600189][ T320] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.600397][ T320] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.600607][ T320] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 35.600815][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.601086][ T320] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 35.601302][ T320] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 35.601526][ T320] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 35.601743][ T320] ? 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) 
[ 35.602065][ T320] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 35.602282][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.602544][ T320] ? __create_object (mm/kmemleak.c:751) 
[ 35.602757][ T320] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.602973][ T320] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 35.603134][ T320] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.603345][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.603556][ T320] ? 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) 
[ 35.603763][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.604053][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.604264][ T320] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.604472][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.604684][ T320] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.605128][ T320] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.605343][ T320] ? 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) 
[ 35.605557][ T320] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.605770][ T320] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.606094][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.606310][ T320] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.606521][ T320] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.606728][ T320] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.606943][ T320] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.607160][ T320] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.607376][ T320] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.607582][ T320] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.607844][ T320] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.608175][ T320] ___sys_sendmsg (net/socket.c:2653) 
[ 35.608386][ T320] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.608599][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.608813][ T320] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.609130][ T320] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 35.609390][ T320] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.609600][ T320] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.609811][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.610184][ T320] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.610401][ T320] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.610610][ T320] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.610816][ T320] ? __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) 
[ 35.611050][ T320] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.611258][ T320] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.611517][  T320] RIP: 0033:0x7fbeeabd27b7
[ 35.611731][ T320] 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)
[   35.612561][  T320] RSP: 002b:00007fff62ec5e88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.612983][  T320] RAX: ffffffffffffffda RBX: 00007fff62ec65b0 RCX: 00007fbeeabd27b7
[   35.613290][  T320] RDX: 0000000000000000 RSI: 00007fff62ec5ef0 RDI: 0000000000000005
[   35.613595][  T320] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   35.614028][  T320] R10: 0000000006e04910 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