======================================
| [   40.970052][  T317] 1 lock held by bridge/317:
| [ 40.970589][ T317] #0: ffffffff8a3bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   40.971118][  T317]
| [   40.971118][  T317] stack backtrace:
[   40.971991][  T317] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   40.972625][  T317] Call Trace:
[   40.972843][  T317]  <TASK>
[ 40.973003][ T317] dump_stack_lvl (lib/dump_stack.c:122) 
[ 40.973305][ T317] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 40.973608][ T317] 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
[ 40.974050][ T317] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 40.974401][ T317] br_setlink (net/bridge/br_netlink.c:669 net/bridge/br_netlink.c:1136) bridge
[ 40.974733][ T317] ? __pfx_br_setlink (net/bridge/br_netlink.c:1085) bridge
[ 40.975095][ T317] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[ 40.975383][ T317] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 40.975728][ T317] ? 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) 
[ 40.976339][ T317] ? __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) 
[ 40.976631][ T317] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:104) 
[ 40.977008][ T317] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 40.977304][ T317] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 40.977593][ T317] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[ 40.977880][ T317] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 40.978181][ T317] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 40.978506][ T317] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 40.978788][ T317] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 40.979102][ T317] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 40.979392][ T317] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[ 40.979705][ T317] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 40.980002][ T317] rtnl_bridge_setlink (net/core/rtnetlink.c:5225) 
[ 40.980306][ T317] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 40.980633][ T317] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 40.980946][ T317] ? 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) 
[ 40.981238][ T317] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 40.981471][ T317] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 40.981754][ T317] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 40.982035][ T317] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 40.982374][ T317] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 40.982671][ T317] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 40.982964][ T317] ? 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) 
[ 40.983258][ T317] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 40.983561][ T317] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 40.983867][ T317] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 40.984208][ T317] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 40.984533][ T317] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 40.984830][ T317] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 40.985194][ T317] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 40.985524][ T317] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 40.985876][ T317] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 40.986221][ T317] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 40.986549][ T317] ? 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) 
[ 40.986821][ T317] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3758 kernel/locking/lockdep.c:3781 kernel/locking/lockdep.c:3836) 
[ 40.987092][ T317] ___sys_sendmsg (net/socket.c:2653) 
[ 40.987383][ T317] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 40.987665][ T317] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 40.987972][ T317] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 40.988287][ T317] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 40.988592][ T317] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 40.988890][ T317] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 40.989172][ T317] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 40.989445][ T317] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 40.989754][ T317] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 40.990056][ T317] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 40.990349][ T317] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   40.990681][  T317] RIP: 0033:0x7f953b3fa7b7
[ 40.990984][ T317] 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)
[   40.991959][  T317] RSP: 002b:00007fff39f92bc8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   40.992437][  T317] RAX: ffffffffffffffda RBX: 000000000000ffff RCX: 00007f953b3fa7b7
[   40.992906][  T317] RDX: 0000000000000000 RSI: 00007fff39f92c30 RDI: 0000000000000005
[   40.993407][  T317] RBP: 00007fff39f92d20 R08: 0000000000000034 R09: 0000000000000000
[   40.993918][  T317] R10: 00007f953b2b3708 R11: 0000000000000246 R12: 000000000000000a
[   40.994324][  T317] R13: 0000000066be9ace R14: 0000000000423360 R15: 00007fff39f932d0
| [   41.583978][  T320] 1 lock held by ip/320:
| [ 41.584212][ T320] #0: ffffffff8a3bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   41.584796][  T320]
| [   41.584796][  T320] stack backtrace:
[   41.585600][  T320] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   41.586316][  T320] Call Trace:
[   41.586528][  T320]  <TASK>
[ 41.586686][ T320] dump_stack_lvl (lib/dump_stack.c:122) 
[ 41.587002][ T320] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 41.587337][ T320] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 41.587757][ 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
[ 41.588186][ T320] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 41.588537][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 41.588913][ T320] br_add_if (net/bridge/br_if.c:692) bridge
[ 41.589261][ T320] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 41.589588][ T320] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 41.590004][ T320] do_setlink (net/core/rtnetlink.c:2907) 
[ 41.590333][ T320] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 41.590621][ T320] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 41.590900][ T320] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 41.591192][ T320] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 41.591503][ T320] ? __kernel_text_address (kernel/extable.c:79) 
[ 41.591790][ T320] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 41.592075][ T320] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 41.592446][ T320] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 41.592765][ T320] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 41.593063][ T320] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 41.593376][ T320] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 41.593686][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 41.593927][ T320] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 41.594230][ T320] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 41.594545][ T320] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 41.594875][ 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) 
[ 41.595189][ T320] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 41.595501][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 41.595866][ T320] ? __create_object (mm/kmemleak.c:751) 
[ 41.596179][ T320] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 41.596490][ T320] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 41.596704][ T320] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 41.596989][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 41.597271][ 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) 
[ 41.597575][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 41.597797][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 41.598083][ T320] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 41.598361][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 41.598633][ T320] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 41.598938][ T320] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 41.599201][ 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) 
[ 41.599509][ T320] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 41.599779][ T320] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 41.600070][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 41.600360][ T320] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 41.600636][ T320] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 41.600901][ T320] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 41.601170][ T320] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 41.601491][ T320] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 41.601797][ T320] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 41.602062][ T320] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 41.602395][ T320] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 41.602682][ T320] ___sys_sendmsg (net/socket.c:2653) 
[ 41.602962][ T320] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 41.603245][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 41.603533][ T320] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 41.603812][ T320] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 41.604147][ T320] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 41.604443][ T320] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 41.604718][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 41.605058][ T320] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 41.605347][ T320] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 41.605641][ T320] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 41.606085][ 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) 
[ 41.606420][ T320] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 41.606707][ T320] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   41.607085][  T320] RIP: 0033:0x7efd142e87b7
[ 41.607383][ 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)
[   41.608335][  T320] RSP: 002b:00007fffe80c7248 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   41.608765][  T320] RAX: ffffffffffffffda RBX: 00007fffe80c7970 RCX: 00007efd142e87b7
[   41.609195][  T320] RDX: 0000000000000000 RSI: 00007fffe80c72b0 RDI: 0000000000000005
[   41.609615][  T320] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   41.610025][  T320] R10: 0000000013d6d910 R11: 0000000000000246 R12: 0000000000000004
[   41.610498][  T320] R13: 0000000066be9ace R14: 0000000000496600 R15: 0000000000000000
| [   41.614044][  T320] 1 lock held by ip/320:
| [ 41.614268][ T320] #0: ffffffff8a3bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   41.614813][  T320]
| [   41.614813][  T320] stack backtrace:
[   41.615617][  T320] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   41.616339][  T320] Call Trace:
[   41.616565][  T320]  <TASK>
[ 41.616722][ T320] dump_stack_lvl (lib/dump_stack.c:122) 
[ 41.617057][ T320] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 41.617348][ T320] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 41.617782][ 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
[ 41.618242][ T320] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 41.618571][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 41.618921][ T320] br_add_if (net/bridge/br_if.c:692) bridge
[ 41.619256][ T320] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 41.619534][ T320] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 41.619903][ T320] do_setlink (net/core/rtnetlink.c:2907) 
[ 41.620189][ T320] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 41.620511][ T320] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 41.620802][ T320] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 41.621085][ T320] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 41.621365][ T320] ? __kernel_text_address (kernel/extable.c:79) 
[ 41.621643][ T320] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 41.621923][ T320] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 41.622285][ T320] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 41.622595][ T320] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 41.622895][ T320] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 41.623166][ T320] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 41.623460][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 41.623686][ T320] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 41.623973][ T320] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 41.624269][ T320] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 41.624560][ 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) 
[ 41.624849][ T320] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 41.625164][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 41.625533][ T320] ? __create_object (mm/kmemleak.c:751) 
[ 41.625837][ T320] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 41.626189][ T320] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 41.626413][ T320] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 41.626729][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 41.627022][ 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) 
[ 41.627310][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 41.627522][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 41.627804][ T320] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 41.628081][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 41.628386][ T320] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 41.628718][ T320] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 41.629017][ 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) 
[ 41.629319][ T320] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 41.629637][ T320] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 41.629923][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 41.630252][ T320] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 41.630578][ T320] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 41.630873][ T320] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 41.631165][ T320] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 41.631470][ T320] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 41.631776][ T320] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 41.632067][ T320] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 41.632430][ T320] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 41.632784][ T320] ___sys_sendmsg (net/socket.c:2653) 
[ 41.633107][ T320] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 41.633395][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 41.633702][ T320] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 41.633982][ T320] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 41.634314][ T320] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 41.634605][ T320] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 41.634903][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 41.635284][ T320] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 41.635576][ T320] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 41.635845][ T320] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 41.636116][ 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) 
[ 41.636430][ T320] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 41.636722][ T320] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   41.637070][  T320] RIP: 0033:0x7efd142e87b7
[ 41.637402][ 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)
[   41.638390][  T320] RSP: 002b:00007fffe80c7248 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   41.638825][  T320] RAX: ffffffffffffffda RBX: 00007fffe80c7970 RCX: 00007efd142e87b7
[   41.639242][  T320] RDX: 0000000000000000 RSI: 00007fffe80c72b0 RDI: 0000000000000005
[   41.639713][  T320] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   41.640155][  T320] R10: 0000000013d6d910 R11: 0000000000000246 R12: 0000000000000004
[   41.640610][  T320] R13: 0000000066be9ace R14: 0000000000496600 R15: 0000000000000000
| [   41.644004][  T320] 1 lock held by ip/320:
| [ 41.644229][ T320] #0: ffffffff8a3bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   41.644730][  T320]
| [   41.644730][  T320] stack backtrace:
[   41.645445][  T320] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   41.646058][  T320] Call Trace:
[   41.646271][  T320]  <TASK>
[ 41.646405][ T320] dump_stack_lvl (lib/dump_stack.c:122) 
[ 41.646676][ T320] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 41.646935][ T320] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 41.647333][ 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
[ 41.647801][ T320] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 41.648135][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 41.648528][ T320] br_add_if (net/bridge/br_if.c:692) bridge
[ 41.648875][ T320] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 41.649151][ T320] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 41.649492][ T320] do_setlink (net/core/rtnetlink.c:2907) 
[ 41.649786][ T320] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 41.650074][ T320] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 41.650363][ T320] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 41.650643][ T320] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 41.650964][ T320] ? __kernel_text_address (kernel/extable.c:79) 
[ 41.651250][ T320] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 41.651513][ T320] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 41.651844][ T320] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 41.652179][ T320] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 41.652485][ T320] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 41.652800][ T320] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 41.653117][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 41.653338][ T320] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 41.653653][ T320] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 41.653944][ T320] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 41.654255][ 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) 
[ 41.654568][ T320] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 41.654839][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 41.655207][ T320] ? __create_object (mm/kmemleak.c:751) 
[ 41.655492][ T320] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 41.655780][ T320] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 41.656158][ T320] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 41.656343][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 41.656521][ 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) 
[ 41.656698][ T320] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 41.656833][ T320] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 41.657020][ T320] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 41.657189][ T320] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 41.657396][ T320] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 41.657579][ T320] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 41.657745][ 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) 
[ 41.657912][ T320] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 41.658087][ T320] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 41.658267][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 41.658440][ T320] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 41.658617][ T320] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 41.658796][ T320] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 41.659072][ T320] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 41.659247][ T320] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 41.659422][ T320] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 41.659592][ T320] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 41.659900][ T320] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 41.660085][ T320] ___sys_sendmsg (net/socket.c:2653) 
[ 41.660262][ T320] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 41.660446][ T320] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 41.660737][ T320] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 41.660929][ T320] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 41.661165][ T320] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 41.661339][ T320] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 41.661618][ T320] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 41.661832][ T320] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 41.662013][ T320] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 41.662195][ T320] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 41.662362][ 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) 
[ 41.662559][ T320] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 41.662761][ T320] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   41.662973][  T320] RIP: 0033:0x7efd142e87b7
[ 41.663256][ 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)
[   41.663854][  T320] RSP: 002b:00007fffe80c7248 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   41.664249][  T320] RAX: ffffffffffffffda RBX: 00007fffe80c7970 RCX: 00007efd142e87b7
[   41.664519][  T320] RDX: 0000000000000000 RSI: 00007fffe80c72b0 RDI: 0000000000000005
[   41.664794][  T320] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   41.665234][  T320] R10: 0000000013d6d910 R11: 0000000000000246 R12: 0000000000000004


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_add_if:do_setlink