======================================
| [  143.005035][  T838] 1 lock held by ip/838:
| [ 143.005190][ T838] #0: ffffffff8f5bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  143.005550][  T838]
| [  143.005550][  T838] stack backtrace:
[  143.006076][  T838] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  143.006549][  T838] Call Trace:
[  143.006713][  T838]  <TASK>
[ 143.006812][ T838] dump_stack_lvl (lib/dump_stack.c:122) 
[ 143.007016][ T838] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 143.007206][ T838] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 143.007502][ T838] 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
[ 143.007773][ T838] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 143.007989][ T838] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 143.008224][ T838] br_add_if (net/bridge/br_if.c:692) bridge
[ 143.008448][ T838] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 143.008640][ T838] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 143.008881][ T838] do_setlink (net/core/rtnetlink.c:2907) 
[ 143.009073][ T838] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 143.009268][ T838] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 143.009458][ T838] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 143.009652][ T838] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 143.009841][ T838] ? __kernel_text_address (kernel/extable.c:79) 
[ 143.010034][ T838] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 143.010245][ T838] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 143.010487][ T838] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 143.010688][ T838] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 143.010873][ T838] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 143.011056][ T838] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 143.011259][ T838] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 143.011410][ T838] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 143.011611][ T838] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 143.011805][ T838] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 143.012003][ T838] ? 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) 
[ 143.012202][ T838] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 143.012394][ T838] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 143.012624][ T838] ? __create_object (mm/kmemleak.c:751) 
[ 143.012810][ T838] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 143.013002][ T838] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 143.013158][ T838] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 143.013352][ T838] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 143.013542][ T838] ? 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) 
[ 143.013738][ T838] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 143.013886][ T838] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 143.014076][ T838] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 143.014266][ T838] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 143.014457][ T838] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 143.014677][ T838] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 143.014850][ T838] ? 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) 
[ 143.015024][ T838] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 143.015221][ T838] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 143.015408][ T838] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 143.015587][ T838] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 143.015764][ T838] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 143.015935][ T838] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 143.016124][ T838] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 143.016329][ T838] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 143.016509][ T838] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 143.016679][ T838] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 143.016898][ T838] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 143.017079][ T838] ___sys_sendmsg (net/socket.c:2653) 
[ 143.017256][ T838] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 143.017426][ T838] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 143.017607][ T838] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 143.017779][ T838] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 143.018000][ T838] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 143.018170][ T838] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 143.018357][ T838] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 143.018568][ T838] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 143.018748][ T838] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 143.018916][ T838] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 143.019089][ T838] ? __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) 
[ 143.019357][ T838] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 143.019529][ T838] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  143.019741][  T838] RIP: 0033:0x7fad371ea7b7
[ 143.019920][ T838] 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)
[  143.020513][  T838] RSP: 002b:00007ffef7e0d048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  143.020768][  T838] RAX: ffffffffffffffda RBX: 00007ffef7e0d770 RCX: 00007fad371ea7b7
[  143.021020][  T838] RDX: 0000000000000000 RSI: 00007ffef7e0d0b0 RDI: 0000000000000005
[  143.021277][  T838] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  143.021531][  T838] R10: 00000000314c6910 R11: 0000000000000246 R12: 0000000000000004
[  143.021795][  T838] R13: 0000000066bea008 R14: 0000000000496600 R15: 0000000000000000
| [  143.023954][  T838] 1 lock held by ip/838:
| [ 143.024094][ T838] #0: ffffffff8f5bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  143.024439][  T838]
| [  143.024439][  T838] stack backtrace:
[  143.024952][  T838] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  143.025359][  T838] Call Trace:
[  143.025505][  T838]  <TASK>
[ 143.025602][ T838] dump_stack_lvl (lib/dump_stack.c:122) 
[ 143.025794][ T838] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 143.025991][ T838] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 143.026280][ T838] 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
[ 143.026553][ T838] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 143.026766][ T838] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 143.026998][ T838] br_add_if (net/bridge/br_if.c:692) bridge
[ 143.027229][ T838] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 143.027432][ T838] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 143.027673][ T838] do_setlink (net/core/rtnetlink.c:2907) 
[ 143.027863][ T838] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 143.028049][ T838] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 143.028232][ T838] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 143.028414][ T838] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 143.028605][ T838] ? __kernel_text_address (kernel/extable.c:79) 
[ 143.028786][ T838] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 143.028972][ T838] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 143.029210][ T838] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 143.029409][ T838] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 143.029592][ T838] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 143.029774][ T838] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 143.029960][ T838] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 143.030107][ T838] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 143.030301][ T838] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 143.030490][ T838] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 143.030691][ T838] ? 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) 
[ 143.030877][ T838] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 143.031067][ T838] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 143.031299][ T838] ? __create_object (mm/kmemleak.c:751) 
[ 143.031480][ T838] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 143.031655][ T838] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 143.031801][ T838] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 143.031972][ T838] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 143.032145][ T838] ? 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) 
[ 143.032338][ T838] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 143.032472][ T838] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 143.032657][ T838] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 143.032826][ T838] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 143.033013][ T838] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 143.033212][ T838] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 143.033400][ T838] ? 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) 
[ 143.033593][ T838] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 143.033770][ T838] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 143.033941][ T838] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 143.034123][ T838] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 143.034297][ T838] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 143.034478][ T838] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 143.034666][ T838] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 143.034860][ T838] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 143.035048][ T838] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 143.035234][ T838] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 143.035458][ T838] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 143.035652][ T838] ___sys_sendmsg (net/socket.c:2653) 
[ 143.035836][ T838] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 143.036013][ T838] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 143.036214][ T838] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 143.036394][ T838] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 143.036623][ T838] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 143.036815][ T838] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 143.037004][ T838] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 143.037254][ T838] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 143.037472][ T838] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 143.037647][ T838] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 143.037818][ T838] ? __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) 
[ 143.038027][ T838] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 143.038208][ T838] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  143.038421][  T838] RIP: 0033:0x7fad371ea7b7
[ 143.038611][ T838] 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)
[  143.039399][  T838] RSP: 002b:00007ffef7e0d048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  143.039659][  T838] RAX: ffffffffffffffda RBX: 00007ffef7e0d770 RCX: 00007fad371ea7b7
[  143.040027][  T838] RDX: 0000000000000000 RSI: 00007ffef7e0d0b0 RDI: 0000000000000005
[  143.040320][  T838] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  143.040603][  T838] R10: 00000000314c6910 R11: 0000000000000246 R12: 0000000000000004
[  143.040973][  T838] R13: 0000000066bea008 R14: 0000000000496600 R15: 0000000000000000
| [  143.043576][  T838] 1 lock held by ip/838:
| [ 143.043714][ T838] #0: ffffffff8f5bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  143.044044][  T838]
| [  143.044044][  T838] stack backtrace:
[  143.044662][  T838] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  143.045063][  T838] Call Trace:
[  143.045219][  T838]  <TASK>
[ 143.045435][ T838] dump_stack_lvl (lib/dump_stack.c:122) 
[ 143.045637][ T838] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 143.045819][ T838] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 143.046091][ T838] 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
[ 143.046379][ T838] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 143.046591][ T838] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 143.046822][ T838] br_add_if (net/bridge/br_if.c:692) bridge
[ 143.047042][ T838] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 143.047226][ T838] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 143.047456][ T838] do_setlink (net/core/rtnetlink.c:2907) 
[ 143.047644][ T838] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 143.047838][ T838] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 143.048123][ T838] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 143.048311][ T838] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 143.048501][ T838] ? __kernel_text_address (kernel/extable.c:79) 
[ 143.048684][ T838] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 143.048962][ T838] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 143.049195][ T838] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 143.049410][ T838] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 143.049617][ T838] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 143.049900][ T838] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 143.050084][ T838] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 143.050246][ T838] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 143.050437][ T838] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 143.050640][ T838] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 143.050931][ T838] ? 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) 
[ 143.051134][ T838] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 143.051329][ T838] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 143.051558][ T838] ? __create_object (mm/kmemleak.c:751) 
[ 143.051844][ T838] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 143.052041][ T838] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 143.052183][ T838] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 143.052371][ T838] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 143.052652][ T838] ? 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) 
[ 143.052837][ T838] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 143.052981][ T838] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 143.053177][ T838] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 143.053367][ T838] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 143.053654][ T838] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 143.053862][ T838] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 143.054048][ T838] ? 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) 
[ 143.054256][ T838] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 143.054556][ T838] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 143.054741][ T838] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 143.054939][ T838] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 143.055127][ T838] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 143.055419][ T838] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 143.055606][ T838] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 143.055797][ T838] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 143.055983][ T838] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 143.056324][ T838] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 143.056533][ T838] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 143.056732][ T838] ___sys_sendmsg (net/socket.c:2653) 
[ 143.056902][ T838] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 143.057075][ T838] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 143.057255][ T838] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 143.057421][ T838] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 143.057648][ T838] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 143.057920][ T838] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 143.058095][ T838] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 143.058345][ T838] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 143.058533][ T838] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 143.058809][ T838] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 143.058976][ T838] ? __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) 
[ 143.059166][ T838] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 143.059680][ T838] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  143.059986][  T838] RIP: 0033:0x7fad371ea7b7
[ 143.060171][ T838] 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)
[  143.060872][  T838] RSP: 002b:00007ffef7e0d048 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  143.061124][  T838] RAX: ffffffffffffffda RBX: 00007ffef7e0d770 RCX: 00007fad371ea7b7
[  143.061376][  T838] RDX: 0000000000000000 RSI: 00007ffef7e0d0b0 RDI: 0000000000000005
[  143.061734][  T838] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  143.061981][  T838] R10: 00000000314c6910 R11: 0000000000000246 R12: 0000000000000004


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