======================================
| [ 34.882118][ T320] #0: ffffffffabbbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 34.882492][ T320] #1: ffff8880080d2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   34.882893][  T320]
| [   34.882893][  T320] stack backtrace:
[   34.883417][  T320] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   34.883829][  T320] Call Trace:
[   34.884066][  T320]  <TASK>
[ 34.884166][ T320] dump_stack_lvl (lib/dump_stack.c:122) 
[ 34.884372][ T320] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 34.884565][ T320] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 34.884832][ 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
[ 34.885105][ T320] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 34.885330][ T320] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 34.885557][ T320] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 34.885822][ T320] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 34.886046][ T320] br_add_if (net/bridge/br_if.c:687) bridge
[ 34.886273][ T320] do_setlink (net/core/rtnetlink.c:2907) 
[ 34.886489][ T320] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 34.886683][ T320] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 34.886878][ T320] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 34.887072][ T320] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 34.887266][ T320] ? __kernel_text_address (kernel/extable.c:79) 
[ 34.887451][ T320] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 34.887645][ T320] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 34.887879][ T320] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 34.888078][ T320] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 34.888273][ T320] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 34.888466][ T320] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 34.888658][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.888815][ T320] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 34.889011][ T320] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 34.889210][ T320] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 34.889414][ 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) 
[ 34.889607][ T320] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 34.889810][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.890046][ T320] ? __create_object (mm/kmemleak.c:751) 
[ 34.890250][ T320] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 34.890443][ T320] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 34.890583][ T320] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 34.890770][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.890956][ 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) 
[ 34.891154][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.891302][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 34.891490][ T320] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 34.891676][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.891871][ T320] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 34.892078][ T320] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 34.892290][ 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) 
[ 34.892478][ T320] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 34.892671][ T320] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 34.892863][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.893055][ T320] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 34.893247][ T320] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 34.893439][ T320] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 34.893630][ T320] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 34.893826][ T320] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 34.894016][ T320] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 34.894200][ T320] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 34.894429][ T320] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 34.894626][ T320] ___sys_sendmsg (net/socket.c:2653) 
[ 34.894815][ T320] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 34.895010][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.895198][ T320] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 34.895381][ T320] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 34.895613][ T320] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 34.895803][ T320] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 34.895997][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.896228][ T320] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 34.896427][ T320] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 34.896613][ T320] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 34.896798][ 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) 
[ 34.897006][ T320] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 34.897196][ T320] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   34.897432][  T320] RIP: 0033:0x7f1c3357f7b7
[ 34.897626][ 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)
[   34.898271][  T320] RSP: 002b:00007ffe319f0138 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   34.898570][  T320] RAX: ffffffffffffffda RBX: 00007ffe319f0860 RCX: 00007f1c3357f7b7
[   34.898847][  T320] RDX: 0000000000000000 RSI: 00007ffe319f01a0 RDI: 0000000000000005
[   34.899126][  T320] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   34.899409][  T320] R10: 0000000034141910 R11: 0000000000000246 R12: 0000000000000004
[   34.899684][  T320] R13: 0000000066bea5ce R14: 0000000000496600 R15: 0000000000000000
| [ 34.902154][ T320] #0: ffffffffabbbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 34.902507][ T320] #1: ffff8880080d2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   34.902882][  T320]
| [   34.902882][  T320] stack backtrace:
[   34.903420][  T320] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   34.903834][  T320] Call Trace:
[   34.903982][  T320]  <TASK>
[ 34.904085][ T320] dump_stack_lvl (lib/dump_stack.c:122) 
[ 34.904279][ T320] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 34.904496][ T320] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 34.904764][ 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
[ 34.905037][ T320] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 34.905258][ T320] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 34.905480][ T320] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 34.905749][ T320] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 34.906019][ T320] br_add_if (net/bridge/br_if.c:687) bridge
[ 34.906252][ T320] do_setlink (net/core/rtnetlink.c:2907) 
[ 34.906443][ T320] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 34.906631][ T320] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 34.906820][ T320] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 34.907011][ T320] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 34.907201][ T320] ? __kernel_text_address (kernel/extable.c:79) 
[ 34.907387][ T320] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 34.907575][ T320] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 34.907806][ T320] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 34.908008][ T320] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 34.908193][ T320] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 34.908379][ T320] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 34.908578][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.908726][ T320] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 34.908918][ T320] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 34.909114][ T320] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 34.909310][ 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) 
[ 34.909500][ T320] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 34.909693][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.909928][ T320] ? __create_object (mm/kmemleak.c:751) 
[ 34.910144][ T320] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 34.910339][ T320] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 34.910483][ T320] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 34.910673][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.910863][ 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) 
[ 34.911059][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.911206][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 34.911395][ T320] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 34.911581][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.911777][ T320] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 34.911983][ T320] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 34.912171][ 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) 
[ 34.912362][ T320] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 34.912556][ T320] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 34.912744][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.912933][ T320] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 34.913124][ T320] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 34.913316][ T320] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 34.913505][ T320] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 34.913700][ T320] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 34.913886][ T320] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 34.914071][ T320] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 34.914299][ T320] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 34.914494][ T320] ___sys_sendmsg (net/socket.c:2653) 
[ 34.914686][ T320] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 34.914877][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.915258][ T320] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 34.915443][ T320] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 34.915672][ T320] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 34.915862][ T320] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 34.916165][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.916396][ T320] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 34.916596][ T320] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 34.916781][ T320] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 34.917074][ 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) 
[ 34.917281][ T320] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 34.917501][ T320] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   34.917732][  T320] RIP: 0033:0x7f1c3357f7b7
[ 34.918149][ 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)
[   34.918786][  T320] RSP: 002b:00007ffe319f0138 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   34.919180][  T320] RAX: ffffffffffffffda RBX: 00007ffe319f0860 RCX: 00007f1c3357f7b7
[   34.919455][  T320] RDX: 0000000000000000 RSI: 00007ffe319f01a0 RDI: 0000000000000005
[   34.919836][  T320] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   34.920116][  T320] R10: 0000000034141910 R11: 0000000000000246 R12: 0000000000000004
[   34.920390][  T320] R13: 0000000066bea5ce R14: 0000000000496600 R15: 0000000000000000
| [ 34.923162][ T320] #0: ffffffffabbbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 34.923625][ T320] #1: ffff8880080d2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   34.924002][  T320]
| [   34.924002][  T320] stack backtrace:
[   34.924618][  T320] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   34.925027][  T320] Call Trace:
[   34.925167][  T320]  <TASK>
[ 34.925265][ T320] dump_stack_lvl (lib/dump_stack.c:122) 
[ 34.925592][ T320] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 34.925778][ T320] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 34.926042][ 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
[ 34.926417][ T320] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 34.926637][ T320] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 34.926860][ T320] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 34.927122][ T320] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 34.927447][ T320] br_add_if (net/bridge/br_if.c:687) bridge
[ 34.927672][ T320] do_setlink (net/core/rtnetlink.c:2907) 
[ 34.927856][ T320] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 34.928042][ T320] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 34.928227][ T320] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 34.928529][ T320] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 34.928715][ T320] ? __kernel_text_address (kernel/extable.c:79) 
[ 34.928897][ T320] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 34.929079][ T320] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 34.929433][ T320] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 34.929644][ T320] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 34.929828][ T320] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 34.930013][ T320] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 34.930320][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.930464][ T320] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 34.930657][ T320] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 34.930850][ T320] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 34.931163][ 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) 
[ 34.931356][ T320] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 34.931549][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.931784][ T320] ? __create_object (mm/kmemleak.c:751) 
[ 34.932090][ T320] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 34.932285][ T320] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 34.932428][ T320] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 34.932616][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.932801][ 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) 
[ 34.933206][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.933354][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 34.933568][ T320] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 34.933755][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.934059][ T320] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 34.934264][ T320] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 34.934451][ 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) 
[ 34.934642][ T320] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 34.934834][ T320] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 34.935132][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.935324][ T320] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 34.935516][ T320] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 34.935705][ T320] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 34.936006][ T320] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 34.936200][ T320] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 34.936391][ T320] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 34.936578][ T320] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 34.936920][ T320] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 34.937120][ T320] ___sys_sendmsg (net/socket.c:2653) 
[ 34.937313][ T320] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 34.937530][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.937831][ T320] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 34.938015][ T320] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 34.938247][ T320] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 34.938437][ T320] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 34.938740][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.938976][ T320] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 34.939181][ T320] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 34.939365][ T320] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 34.939672][ 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) 
[ 34.939879][ T320] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 34.940064][ T320] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   34.940290][  T320] RIP: 0033:0x7f1c3357f7b7
[ 34.940599][ 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)
[   34.941235][  T320] RSP: 002b:00007ffe319f0138 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   34.941649][  T320] RAX: ffffffffffffffda RBX: 00007ffe319f0860 RCX: 00007f1c3357f7b7
[   34.941927][  T320] RDX: 0000000000000000 RSI: 00007ffe319f01a0 RDI: 0000000000000005
[   34.942198][  T320] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   34.942586][  T320] R10: 0000000034141910 R11: 0000000000000246 R12: 0000000000000004
[   34.942856][  T320] R13: 0000000066bea5ce R14: 0000000000496600 R15: 0000000000000000
| [   39.086627][  T354] 1 lock held by bridge/354:
| [ 39.086814][ T354] #0: ffffffffabbbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   39.087184][  T354]
| [   39.087184][  T354] stack backtrace:
[   39.087688][  T354] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   39.088126][  T354] Call Trace:
[   39.088270][  T354]  <TASK>
[ 39.088369][ T354] dump_stack_lvl (lib/dump_stack.c:122) 
[ 39.088572][ T354] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 39.088771][ T354] br_get_link_af_size_filtered (net/bridge/br_private.h:1605 net/bridge/br_private.h:1602 net/bridge/br_netlink.c:110) bridge
[ 39.089062][ T354] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 39.089279][ T354] br_setlink (net/bridge/br_netlink.c:669 net/bridge/br_netlink.c:1136) bridge
[ 39.089519][ T354] ? __pfx_br_setlink (net/bridge/br_netlink.c:1085) bridge
[ 39.089745][ T354] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[ 39.089938][ T354] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 39.090144][ T354] ? 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) 
[ 39.090339][ T354] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:129) 
[ 39.090518][ T354] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:104) 
[ 39.090753][ T354] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 39.090977][ T354] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 39.091161][ T354] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[ 39.091358][ T354] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 39.091548][ T354] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 39.091736][ T354] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 39.091938][ T354] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 39.092118][ T354] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 39.092309][ T354] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[ 39.092494][ T354] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 39.092692][ T354] rtnl_bridge_setlink (net/core/rtnetlink.c:5225) 
[ 39.092896][ T354] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 39.093077][ T354] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 39.093268][ T354] ? 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) 
[ 39.093446][ T354] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 39.093598][ T354] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 39.093779][ T354] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 39.093989][ T354] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 39.094184][ T354] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 39.094376][ T354] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 39.094572][ T354] ? 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) 
[ 39.094752][ T354] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 39.094960][ T354] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 39.095150][ T354] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 39.095334][ T354] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 39.095521][ T354] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 39.095714][ T354] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 39.095912][ T354] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 39.096122][ T354] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 39.096327][ T354] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 39.096504][ T354] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 39.096755][ T354] ___sys_sendmsg (net/socket.c:2653) 
[ 39.096956][ T354] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 39.097148][ T354] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 39.097323][ T354] ? usage_skip (kernel/locking/lockdep.c:2294 kernel/locking/lockdep.c:2262) 
[ 39.097506][ T354] ? reacquire_held_locks (kernel/locking/lockdep.c:5284) 
[ 39.097680][ T354] ? do_user_addr_fault (./include/linux/rcupdate.h:326 ./include/linux/rcupdate.h:838 ./include/linux/mm.h:713 arch/x86/mm/fault.c:1340) 
[ 39.097864][ T354] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 39.098058][ T354] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 39.098236][ T354] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 39.098412][ T354] ? __pfx___up_read (kernel/locking/rwsem.c:1339) 
[ 39.098606][ T354] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 39.098781][ T354] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   39.099020][  T354] RIP: 0033:0x7f889aedd7b7
[ 39.099204][ T354] 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)
[   39.099797][  T354] RSP: 002b:00007fff44d7fe38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   39.100142][  T354] RAX: ffffffffffffffda RBX: 000000000000ffff RCX: 00007f889aedd7b7
[   39.100408][  T354] RDX: 0000000000000000 RSI: 00007fff44d7fea0 RDI: 0000000000000005
[   39.100670][  T354] RBP: 00007fff44d7ff90 R08: 0000000000000034 R09: 0000000000000000
[   39.100937][  T354] R10: 00007f889ad96708 R11: 0000000000000246 R12: 000000000000000a


Finger prints:
lockdep_rcu_suspicious:br_get_link_af_size_filtered:br_info_notify:br_setlink:rtnl_bridge_setlink
lockdep_rcu_suspicious:br_get_link_af_size_filtered:br_info_notify:br_make_forwarding:br_port_state_selection