======================================
| [  145.295312][ T1209] 1 lock held by ip/1209:
| [ 145.295446][ T1209] #0: ffffffffa7dbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  145.295801][ T1209]
| [  145.295801][ T1209] stack backtrace:
[  145.296333][ T1209] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  145.296728][ T1209] Call Trace:
[  145.296874][ T1209]  <TASK>
[ 145.296970][ T1209] dump_stack_lvl (lib/dump_stack.c:122) 
[ 145.297176][ T1209] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 145.297351][ T1209] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 145.297645][ T1209] 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
[ 145.297919][ T1209] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 145.298133][ T1209] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 145.298374][ T1209] br_add_if (net/bridge/br_if.c:692) bridge
[ 145.298601][ T1209] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 145.298779][ T1209] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 145.299021][ T1209] do_setlink (net/core/rtnetlink.c:2907) 
[ 145.299192][ T1209] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 145.299370][ T1209] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 145.299543][ T1209] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 145.299713][ T1209] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 145.299892][ T1209] ? __kernel_text_address (kernel/extable.c:79) 
[ 145.300070][ T1209] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 145.300241][ T1209] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 145.300462][ T1209] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 145.300645][ T1209] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 145.300843][ T1209] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 145.301032][ T1209] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 145.301215][ T1209] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 145.301366][ T1209] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 145.301554][ T1209] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 145.301739][ T1209] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 145.301943][ T1209] ? 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) 
[ 145.302124][ T1209] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 145.302302][ T1209] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 145.302520][ T1209] ? __create_object (mm/kmemleak.c:751) 
[ 145.302698][ T1209] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 145.302883][ T1209] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 145.303041][ T1209] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 145.303219][ T1209] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 145.303424][ T1209] ? 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) 
[ 145.303597][ T1209] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 145.303741][ T1209] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 145.303940][ T1209] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 145.304119][ T1209] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 145.304324][ T1209] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 145.304512][ T1209] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 145.304718][ T1209] ? 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) 
[ 145.304902][ T1209] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 145.305087][ T1209] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 145.305282][ T1209] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 145.305461][ T1209] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 145.305668][ T1209] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 145.305863][ T1209] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 145.306039][ T1209] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 145.306230][ T1209] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 145.306425][ T1209] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 145.306597][ T1209] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 145.306835][ T1209] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 145.307031][ T1209] ___sys_sendmsg (net/socket.c:2653) 
[ 145.307223][ T1209] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 145.307411][ T1209] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 145.307609][ T1209] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 145.307784][ T1209] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 145.308030][ T1209] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 145.308200][ T1209] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 145.308399][ T1209] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 145.308626][ T1209] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 145.308832][ T1209] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 145.309009][ T1209] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 145.309205][ T1209] ? __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) 
[ 145.309404][ T1209] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 145.309585][ T1209] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  145.309805][ T1209] RIP: 0033:0x7f1c934957b7
[ 145.309987][ T1209] 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)
[  145.310591][ T1209] RSP: 002b:00007ffcbc94b2c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  145.310854][ T1209] RAX: ffffffffffffffda RBX: 00007ffcbc94b9f0 RCX: 00007f1c934957b7
[  145.311119][ T1209] RDX: 0000000000000000 RSI: 00007ffcbc94b330 RDI: 0000000000000005
[  145.311383][ T1209] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  145.311640][ T1209] R10: 0000000028112910 R11: 0000000000000246 R12: 0000000000000004
[  145.311902][ T1209] R13: 0000000066bea24e R14: 0000000000496600 R15: 0000000000000000
| [  145.314048][ T1209] 1 lock held by ip/1209:
| [ 145.314190][ T1209] #0: ffffffffa7dbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  145.314506][ T1209]
| [  145.314506][ T1209] stack backtrace:
[  145.314985][ T1209] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  145.315368][ T1209] Call Trace:
[  145.315501][ T1209]  <TASK>
[ 145.315596][ T1209] dump_stack_lvl (lib/dump_stack.c:122) 
[ 145.315778][ T1209] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 145.315974][ T1209] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 145.316235][ T1209] 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
[ 145.316506][ T1209] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 145.316740][ T1209] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 145.317186][ T1209] br_add_if (net/bridge/br_if.c:692) bridge
[ 145.317414][ T1209] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 145.317589][ T1209] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 145.317819][ T1209] do_setlink (net/core/rtnetlink.c:2907) 
[ 145.318015][ T1209] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 145.318197][ T1209] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 145.318474][ T1209] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 145.318645][ T1209] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 145.318844][ T1209] ? __kernel_text_address (kernel/extable.c:79) 
[ 145.319017][ T1209] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 145.319309][ T1209] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 145.319540][ T1209] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 145.319757][ T1209] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 145.320068][ T1209] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 145.320245][ T1209] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 145.320441][ T1209] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 145.320595][ T1209] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 145.320780][ T1209] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 145.320980][ T1209] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 145.321394][ T1209] ? 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) 
[ 145.321586][ T1209] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 145.321772][ T1209] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 145.321997][ T1209] ? __create_object (mm/kmemleak.c:751) 
[ 145.322195][ T1209] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 145.322401][ T1209] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 145.322534][ T1209] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 145.322726][ T1209] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 145.322897][ T1209] ? 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) 
[ 145.323177][ T1209] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 145.323349][ T1209] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 145.323666][ T1209] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 145.323843][ T1209] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 145.324037][ T1209] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 145.324225][ T1209] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 145.324408][ T1209] ? 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) 
[ 145.324603][ T1209] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 145.324780][ T1209] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 145.325086][ T1209] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 145.325278][ T1209] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 145.325456][ T1209] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 145.325638][ T1209] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 145.325835][ T1209] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 145.326019][ T1209] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 145.326195][ T1209] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 145.326364][ T1209] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 145.326680][ T1209] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 145.326864][ T1209] ___sys_sendmsg (net/socket.c:2653) 
[ 145.327038][ T1209] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 145.327212][ T1209] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 145.327529][ T1209] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 145.327699][ T1209] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 145.327932][ T1209] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 145.328107][ T1209] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 145.328402][ T1209] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 145.328718][ T1209] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 145.328919][ T1209] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 145.329089][ T1209] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 145.329258][ T1209] ? __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) 
[ 145.329477][ T1209] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 145.329650][ T1209] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  145.329880][ T1209] RIP: 0033:0x7f1c934957b7
[ 145.330168][ T1209] 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)
[  145.330772][ T1209] RSP: 002b:00007ffcbc94b2c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  145.331136][ T1209] RAX: ffffffffffffffda RBX: 00007ffcbc94b9f0 RCX: 00007f1c934957b7
[  145.331386][ T1209] RDX: 0000000000000000 RSI: 00007ffcbc94b330 RDI: 0000000000000005
[  145.331640][ T1209] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  145.331903][ T1209] R10: 0000000028112910 R11: 0000000000000246 R12: 0000000000000004
[  145.332157][ T1209] R13: 0000000066bea24e R14: 0000000000496600 R15: 0000000000000000
| [  145.334451][ T1209] 1 lock held by ip/1209:
| [ 145.334584][ T1209] #0: ffffffffa7dbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  145.335032][ T1209]
| [  145.335032][ T1209] stack backtrace:
[  145.335509][ T1209] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  145.335890][ T1209] Call Trace:
[  145.336023][ T1209]  <TASK>
[ 145.336114][ T1209] dump_stack_lvl (lib/dump_stack.c:122) 
[ 145.336289][ T1209] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 145.336574][ T1209] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 145.336873][ T1209] 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
[ 145.337224][ T1209] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 145.337459][ T1209] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 145.337674][ T1209] br_add_if (net/bridge/br_if.c:692) bridge
[ 145.338006][ T1209] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 145.338188][ T1209] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 145.338411][ T1209] do_setlink (net/core/rtnetlink.c:2907) 
[ 145.338586][ T1209] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 145.338788][ T1209] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 145.338960][ T1209] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 145.339143][ T1209] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 145.339333][ T1209] ? __kernel_text_address (kernel/extable.c:79) 
[ 145.339503][ T1209] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 145.339707][ T1209] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 145.339924][ T1209] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 145.340224][ T1209] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 145.340392][ T1209] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 145.340566][ T1209] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 145.340865][ T1209] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 145.341000][ T1209] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 145.341206][ T1209] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 145.341395][ T1209] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 145.341577][ T1209] ? 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) 
[ 145.341874][ T1209] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 145.342063][ T1209] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 145.342275][ T1209] ? __create_object (mm/kmemleak.c:751) 
[ 145.342456][ T1209] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 145.342657][ T1209] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 145.342898][ T1209] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 145.343101][ T1209] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 145.343272][ T1209] ? 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) 
[ 145.343483][ T1209] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 145.343622][ T1209] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 145.343937][ T1209] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 145.344117][ T1209] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 145.344310][ T1209] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 145.344601][ T1209] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 145.344807][ T1209] ? 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) 
[ 145.344984][ T1209] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 145.345161][ T1209] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 145.345454][ T1209] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 145.345645][ T1209] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 145.345930][ T1209] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 145.346125][ T1209] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 145.346306][ T1209] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 145.346522][ T1209] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 145.346801][ T1209] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 145.347014][ T1209] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 145.347228][ T1209] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 145.347428][ T1209] ___sys_sendmsg (net/socket.c:2653) 
[ 145.347613][ T1209] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 145.347911][ T1209] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 145.348088][ T1209] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 145.348267][ T1209] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 145.348505][ T1209] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 145.348697][ T1209] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 145.348885][ T1209] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 145.349208][ T1209] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 145.349392][ T1209] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 145.349573][ T1209] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 145.349767][ T1209] ? __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) 
[ 145.349965][ T1209] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 145.350262][ T1209] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  145.350500][ T1209] RIP: 0033:0x7f1c934957b7
[ 145.350690][ T1209] 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)
[  145.351550][ T1209] RSP: 002b:00007ffcbc94b2c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  145.351812][ T1209] RAX: ffffffffffffffda RBX: 00007ffcbc94b9f0 RCX: 00007f1c934957b7
[  145.352211][ T1209] RDX: 0000000000000000 RSI: 00007ffcbc94b330 RDI: 0000000000000005
[  145.352489][ T1209] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  145.352851][ T1209] R10: 0000000028112910 R11: 0000000000000246 R12: 0000000000000004


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