======================================
| [ 17.397039][ T351] #0: ffffffffa1be7a48 (rtnl_mutex){+.+.}-{4:4}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6909)
| [ 17.397301][ T351] #1: ffffffffa1bd6630 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368)
| [   17.397598][  T351]
| [   17.397598][  T351] stack backtrace:
[   17.398004][  T351] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   17.398190][  T351] Call Trace:
[   17.398301][  T351]  <TASK>
[ 17.398380][ T351] dump_stack_lvl (lib/dump_stack.c:123)
[ 17.398533][ T351] print_circular_bug (kernel/locking/lockdep.c:2077)
[ 17.398684][ T351] check_noncircular (kernel/locking/lockdep.c:2206)
[ 17.398831][ T351] ? __pfx_check_noncircular (kernel/locking/lockdep.c:2182)
[ 17.398985][ T351] ? alloc_chain_hlocks (kernel/locking/lockdep.c:3528)
[ 17.399136][ T351] ? __lock_release (kernel/locking/lockdep.c:5525)
[ 17.399286][ T351] check_prev_add (kernel/locking/lockdep.c:3162)
[ 17.399439][ T351] validate_chain (kernel/locking/lockdep.c:3281 kernel/locking/lockdep.c:3904)
[ 17.399588][ T351] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860)
[ 17.399733][ T351] ? 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:228)
[ 17.399887][ T351] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3))
[ 17.400004][ T351] __lock_acquire (kernel/locking/lockdep.c:5226)
[ 17.400152][ T351] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851)
[ 17.400306][ T351] ? team_port_change_check (drivers/net/team/team_core.c:2939 drivers/net/team/team_core.c:2962)
[ 17.400456][ T351] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3))
[ 17.400587][ T351] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 17.400734][ T351] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37))
[ 17.400881][ T351] ? lock_acquire (kernel/locking/lockdep.c:5822)
[ 17.401029][ T351] ? team_port_change_check (drivers/net/team/team_core.c:2939 drivers/net/team/team_core.c:2962)
[ 17.401175][ T351] __mutex_lock (kernel/locking/mutex.c:587 kernel/locking/mutex.c:735)
[ 17.401325][ T351] ? team_port_change_check (drivers/net/team/team_core.c:2939 drivers/net/team/team_core.c:2962)
[ 17.401474][ T351] ? team_port_change_check (drivers/net/team/team_core.c:2939 drivers/net/team/team_core.c:2962)
[ 17.401622][ T351] ? __pfx___mutex_lock (kernel/locking/mutex.c:734)
[ 17.401768][ T351] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851)
[ 17.401913][ T351] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368)
[ 17.402096][ T351] ? ref_tracker_free (lib/ref_tracker.c:272)
[ 17.402248][ T351] ? __pfx_fib_sync_up (net/ipv4/fib_semantics.c:2111)
[ 17.402407][ T351] ? __pfx_rwsem_read_trylock (kernel/locking/rwsem.c:249)
[ 17.402559][ T351] ? team_port_change_check (drivers/net/team/team_core.c:2939 drivers/net/team/team_core.c:2962)
[ 17.402798][ T351] team_port_change_check (drivers/net/team/team_core.c:2939 drivers/net/team/team_core.c:2962)
[ 17.402947][ T351] team_device_event (drivers/net/team/team_core.c:3017)
[ 17.403099][ T351] ? trace_notifier_run (./include/trace/events/notifier.h:59 (discriminator 37))
[ 17.403256][ T351] notifier_call_chain (kernel/notifier.c:85 (discriminator 2))
[ 17.403404][ T351] blocking_notifier_call_chain (kernel/notifier.c:381 kernel/notifier.c:368)
[ 17.403560][ T351] netdev_state_change (net/core/dev.c:1381 net/core/dev.c:1372)
[ 17.403707][ T351] ? __pfx_netdev_state_change (net/core/dev.c:1373)
[ 17.403853][ T351] ? __pfx_dev_activate (net/sched/sch_generic.c:1248)
[ 17.404004][ T351] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406)
[ 17.404192][ T351] linkwatch_do_dev (net/core/link_watch.c:182)
[ 17.404342][ T351] rtnl_getlink (net/core/rtnetlink.c:4130)
[ 17.404490][ T351] ? __pfx_rtnl_getlink (net/core/rtnetlink.c:4075)
[ 17.404742][ T351] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:595 kernel/locking/mutex.c:735)
[ 17.404890][ T351] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6909)
[ 17.405038][ T351] ? __pfx___mutex_lock (kernel/locking/mutex.c:734)
[ 17.405185][ T351] ? __lock_release (kernel/locking/lockdep.c:5525)
[ 17.405417][ T351] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6906)
[ 17.405566][ T351] ? __pfx___lock_release (kernel/locking/lockdep.c:5501)
[ 17.405712][ T351] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 17.405866][ T351] rtnetlink_rcv_msg (net/core/rtnetlink.c:6911)
[ 17.406104][ T351] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6805)
[ 17.406249][ T351] ? 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:228)
[ 17.406396][ T351] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3))
[ 17.406508][ T351] ? __lock_acquire (kernel/locking/lockdep.c:5226)
[ 17.406743][ T351] netlink_rcv_skb (net/netlink/af_netlink.c:2543)
[ 17.406890][ T351] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6805)
[ 17.407036][ T351] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2520)
[ 17.407193][ T351] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340)
[ 17.407430][ T351] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333)
[ 17.407578][ T351] netlink_unicast (net/netlink/af_netlink.c:1322 net/netlink/af_netlink.c:1348)
[ 17.407724][ T351] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1333)
[ 17.407872][ T351] ? find_held_lock (kernel/locking/lockdep.c:5339)
[ 17.408109][ T351] netlink_sendmsg (net/netlink/af_netlink.c:1892)
[ 17.408256][ T351] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1811)
[ 17.408412][ T351] ____sys_sendmsg (net/socket.c:711 net/socket.c:726 net/socket.c:2594)
[ 17.408559][ T351] ? __pfx_____sys_sendmsg (net/socket.c:2540)
[ 17.408789][ T351] ? __pfx_copy_msghdr_from_user (net/socket.c:2520)
[ 17.408973][ T351] ___sys_sendmsg (net/socket.c:2650)
[ 17.409122][ T351] ? 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:228)
[ 17.409270][ T351] ? __pfx____sys_sendmsg (net/socket.c:2637)
[ 17.409420][ T351] ? usage_skip (kernel/locking/lockdep.c:2284)
[ 17.409576][ T351] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1340)
[ 17.409723][ T351] ? do_user_addr_fault (./include/linux/rcupdate.h:337 ./include/linux/rcupdate.h:849 ./include/linux/mm.h:740 arch/x86/mm/fault.c:1340)
[ 17.409871][ T351] ? find_held_lock (kernel/locking/lockdep.c:5339)
[ 17.410018][ T351] ? __lock_release (kernel/locking/lockdep.c:5525)
[ 17.410166][ T351] __sys_sendmsg (net/socket.c:2680)
[ 17.410312][ T351] ? __pfx___sys_sendmsg (net/socket.c:2665)
[ 17.410462][ T351] ? do_user_addr_fault (./include/linux/rcupdate.h:882 ./include/linux/mm.h:742 arch/x86/mm/fault.c:1340)
[ 17.410703][ T351] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 17.410851][ T351] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   17.411032][  T351] RIP: 0033:0x7fc7b20f79a7
[ 17.411277][ T351] 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)
[   17.411792][  T351] RSP: 002b:00007ffccb464838 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   17.412110][  T351] RAX: ffffffffffffffda RBX: 00000000147da320 RCX: 00007fc7b20f79a7
[   17.412332][  T351] RDX: 0000000000000000 RSI: 00007ffccb464870 RDI: 0000000000000005
[   17.412637][  T351] RBP: 00000000147da230 R08: 0000000000000008 R09: 0000000000000000
[   17.412864][  T351] R10: 0000000000000200 R11: 0000000000000246 R12: 0000000014800ab0


Finger prints:
print_circular_bug:check_noncircular:check_prev_add:validate_chain:__lock_acquire