======================================
| [  196.845316][ T1021] 1 lock held by ip/1021:
| [ 196.845445][ T1021] #0: ffffffff961bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  196.845759][ T1021]
| [  196.845759][ T1021] stack backtrace:
[  196.846239][ T1021] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  196.846615][ T1021] Call Trace:
[  196.846747][ T1021]  <TASK>
[ 196.846990][ T1021] dump_stack_lvl (lib/dump_stack.c:122) 
[ 196.847172][ T1021] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 196.847550][ T1021] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 196.847836][ T1021] 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
[ 196.848093][ T1021] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 196.848289][ T1021] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 196.848597][ T1021] br_add_if (net/bridge/br_if.c:692) bridge
[ 196.848799][ T1021] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 196.848969][ T1021] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 196.849182][ T1021] do_setlink (net/core/rtnetlink.c:2907) 
[ 196.849454][ T1021] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 196.849632][ T1021] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 196.849798][ T1021] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 196.849966][ T1021] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 196.850139][ T1021] ? __kernel_text_address (kernel/extable.c:79) 
[ 196.850304][ T1021] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 196.850471][ T1021] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 196.850677][ T1021] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 196.850856][ T1021] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 196.851027][ T1021] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 196.851198][ T1021] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 196.851365][ T1021] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 196.851497][ T1021] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 196.851675][ T1021] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 196.851850][ T1021] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 196.852024][ T1021] ? 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) 
[ 196.852195][ T1021] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 196.852373][ T1021] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 196.852589][ T1021] ? __create_object (mm/kmemleak.c:751) 
[ 196.852762][ T1021] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 196.852938][ T1021] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 196.853071][ T1021] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 196.853246][ T1021] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 196.853414][ T1021] ? 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) 
[ 196.853580][ T1021] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 196.853716][ T1021] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 196.853885][ T1021] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 196.854059][ T1021] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 196.854238][ T1021] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 196.854426][ T1021] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 196.854696][ T1021] ? 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) 
[ 196.854864][ T1021] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 196.855036][ T1021] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 196.855204][ T1021] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 196.855477][ T1021] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 196.855648][ T1021] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 196.855813][ T1021] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 196.856005][ T1021] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 196.856282][ T1021] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 196.856465][ T1021] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 196.856631][ T1021] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 196.856837][ T1021] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 196.857113][ T1021] ___sys_sendmsg (net/socket.c:2653) 
[ 196.857288][ T1021] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 196.857456][ T1021] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 196.857629][ T1021] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 196.857795][ T1021] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 196.858107][ T1021] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 196.858278][ T1021] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 196.858454][ T1021] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 196.858764][ T1021] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 196.858941][ T1021] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 196.859111][ T1021] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 196.859282][ T1021] ? __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) 
[ 196.859476][ T1021] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 196.859654][ T1021] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  196.859866][ T1021] RIP: 0033:0x7f9a70fbb7b7
[ 196.860047][ T1021] 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)
[  196.860733][ T1021] RSP: 002b:00007ffd9760a428 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  196.860994][ T1021] RAX: ffffffffffffffda RBX: 00007ffd9760ab50 RCX: 00007f9a70fbb7b7
[  196.861385][ T1021] RDX: 0000000000000000 RSI: 00007ffd9760a490 RDI: 0000000000000005
[  196.861643][ T1021] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  196.861894][ T1021] R10: 000000003a628910 R11: 0000000000000246 R12: 0000000000000004
[  196.862146][ T1021] R13: 0000000066be9f83 R14: 0000000000496600 R15: 0000000000000000
| [  196.864611][ T1021] 1 lock held by ip/1021:
| [ 196.864741][ T1021] #0: ffffffff961bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  196.865175][ T1021]
| [  196.865175][ T1021] stack backtrace:
[  196.865741][ T1021] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  196.866130][ T1021] Call Trace:
[  196.866263][ T1021]  <TASK>
[ 196.866353][ T1021] dump_stack_lvl (lib/dump_stack.c:122) 
[ 196.866530][ T1021] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 196.866811][ T1021] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 196.867062][ T1021] 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
[ 196.867313][ T1021] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 196.867615][ T1021] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 196.867825][ T1021] br_add_if (net/bridge/br_if.c:692) bridge
[ 196.868028][ T1021] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 196.868292][ T1021] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 196.868509][ T1021] do_setlink (net/core/rtnetlink.c:2907) 
[ 196.868682][ T1021] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 196.868861][ T1021] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 196.869141][ T1021] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 196.869310][ T1021] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 196.869479][ T1021] ? __kernel_text_address (kernel/extable.c:79) 
[ 196.869648][ T1021] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 196.869915][ T1021] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 196.870122][ T1021] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 196.870311][ T1021] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 196.870478][ T1021] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 196.870747][ T1021] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 196.870920][ T1021] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 196.871053][ T1021] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 196.871226][ T1021] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 196.871505][ T1021] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 196.871683][ T1021] ? 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) 
[ 196.871851][ T1021] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 196.872029][ T1021] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 196.872237][ T1021] ? __create_object (mm/kmemleak.c:751) 
[ 196.872406][ T1021] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 196.872578][ T1021] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 196.872706][ T1021] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 196.872879][ T1021] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 196.873142][ T1021] ? 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) 
[ 196.873311][ T1021] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 196.873448][ T1021] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 196.873616][ T1021] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 196.873880][ T1021] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 196.874048][ T1021] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 196.874232][ T1021] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 196.874399][ T1021] ? 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) 
[ 196.874567][ T1021] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 196.874832][ T1021] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 196.875001][ T1021] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 196.875170][ T1021] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 196.875344][ T1021] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 196.875604][ T1021] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 196.875772][ T1021] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 196.875958][ T1021] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 196.876129][ T1021] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 196.876393][ T1021] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 196.876605][ T1021] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 196.876783][ T1021] ___sys_sendmsg (net/socket.c:2653) 
[ 196.876952][ T1021] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 196.877231][ T1021] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 196.877400][ T1021] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 196.877562][ T1021] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 196.877767][ T1021] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 196.877939][ T1021] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 196.878115][ T1021] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 196.878322][ T1021] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 196.878501][ T1021] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 196.878667][ T1021] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 196.878831][ T1021] ? __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) 
[ 196.879024][ T1021] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 196.879191][ T1021] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  196.879590][ T1021] RIP: 0033:0x7f9a70fbb7b7
[ 196.879774][ T1021] 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)
[  196.880448][ T1021] RSP: 002b:00007ffd9760a428 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  196.880698][ T1021] RAX: ffffffffffffffda RBX: 00007ffd9760ab50 RCX: 00007f9a70fbb7b7
[  196.880945][ T1021] RDX: 0000000000000000 RSI: 00007ffd9760a490 RDI: 0000000000000005
[  196.881305][ T1021] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  196.881556][ T1021] R10: 000000003a628910 R11: 0000000000000246 R12: 0000000000000004
[  196.881802][ T1021] R13: 0000000066be9f83 R14: 0000000000496600 R15: 0000000000000000
| [  196.883870][ T1021] 1 lock held by ip/1021:
| [ 196.883999][ T1021] #0: ffffffff961bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  196.884415][ T1021]
| [  196.884415][ T1021] stack backtrace:
[  196.884866][ T1021] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  196.885243][ T1021] Call Trace:
[  196.885371][ T1021]  <TASK>
[ 196.885459][ T1021] dump_stack_lvl (lib/dump_stack.c:122) 
[ 196.885634][ T1021] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 196.885800][ T1021] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 196.886052][ T1021] 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
[ 196.886298][ T1021] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 196.886597][ T1021] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 196.886804][ T1021] br_add_if (net/bridge/br_if.c:692) bridge
[ 196.887003][ T1021] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 196.887166][ T1021] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 196.887473][ T1021] do_setlink (net/core/rtnetlink.c:2907) 
[ 196.887643][ T1021] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 196.887810][ T1021] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 196.887974][ T1021] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 196.888245][ T1021] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 196.888413][ T1021] ? __kernel_text_address (kernel/extable.c:79) 
[ 196.888577][ T1021] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 196.888744][ T1021] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 196.888951][ T1021] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 196.889128][ T1021] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 196.889292][ T1021] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 196.889457][ T1021] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 196.889627][ T1021] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 196.889756][ T1021] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 196.889929][ T1021] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 196.890101][ T1021] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 196.890272][ T1021] ? 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) 
[ 196.890536][ T1021] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 196.890707][ T1021] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 196.890913][ T1021] ? __create_object (mm/kmemleak.c:751) 
[ 196.891086][ T1021] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 196.891358][ T1021] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 196.891486][ T1021] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 196.891653][ T1021] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 196.891817][ T1021] ? 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) 
[ 196.891990][ T1021] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 196.892321][ T1021] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 196.892493][ T1021] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 196.892658][ T1021] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 196.892829][ T1021] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 196.893011][ T1021] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 196.893177][ T1021] ? 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) 
[ 196.893346][ T1021] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 196.893518][ T1021] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 196.893686][ T1021] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 196.893856][ T1021] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 196.894026][ T1021] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 196.894197][ T1021] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 196.894366][ T1021] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 196.894636][ T1021] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 196.894806][ T1021] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 196.894970][ T1021] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 196.895173][ T1021] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 196.895446][ T1021] ___sys_sendmsg (net/socket.c:2653) 
[ 196.895615][ T1021] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 196.895786][ T1021] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 196.895968][ T1021] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 196.896236][ T1021] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 196.896440][ T1021] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 196.896608][ T1021] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 196.896780][ T1021] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 196.896992][ T1021] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 196.897178][ T1021] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 196.897343][ T1021] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 196.897507][ T1021] ? __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) 
[ 196.897694][ T1021] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 196.897862][ T1021] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  196.898067][ T1021] RIP: 0033:0x7f9a70fbb7b7
[ 196.898248][ T1021] 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)
[  196.898926][ T1021] RSP: 002b:00007ffd9760a428 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  196.899279][ T1021] RAX: ffffffffffffffda RBX: 00007ffd9760ab50 RCX: 00007f9a70fbb7b7
[  196.899530][ T1021] RDX: 0000000000000000 RSI: 00007ffd9760a490 RDI: 0000000000000005
[  196.899775][ T1021] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  196.900026][ T1021] R10: 000000003a628910 R11: 0000000000000246 R12: 0000000000000004


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