======================================
| [ 13.483621][ T279] #0: ffffffffae401dc8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink (net/core/rtnetlink.c:337 net/core/rtnetlink.c:4020)
| [ 13.483925][ T279] #1: ffffffffae3f0a70 ((netdev_chain).rwsem){++++}-{4:4}, at: blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368)
| [   13.484261][  T279]
| [   13.484261][  T279] stack backtrace:
[   13.484723][  T279] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.484934][  T279] Call Trace:
[   13.485063][  T279]  <TASK>
[ 13.485160][ T279] dump_stack_lvl (lib/dump_stack.c:123)
[ 13.485357][ T279] print_deadlock_bug (kernel/locking/lockdep.c:3040)
[ 13.485527][ T279] validate_chain (kernel/locking/lockdep.c:3894)
[ 13.485691][ T279] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860)
[ 13.485863][ T279] ? 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)
[ 13.486042][ T279] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3))
[ 13.486175][ T279] __lock_acquire (kernel/locking/lockdep.c:5226)
[ 13.486360][ T279] lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851)
[ 13.486539][ T279] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368)
[ 13.486806][ T279] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 13.486994][ T279] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 37))
[ 13.487166][ T279] ? lock_acquire (kernel/locking/lockdep.c:5822)
[ 13.487346][ T279] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368)
[ 13.487575][ T279] down_read (./arch/x86/include/asm/preempt.h:79 kernel/locking/rwsem.c:1246 kernel/locking/rwsem.c:1261 kernel/locking/rwsem.c:1526)
[ 13.487715][ T279] ? blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368)
[ 13.487931][ T279] ? __pfx_down_read (kernel/locking/rwsem.c:1522)
[ 13.488117][ T279] blocking_notifier_call_chain (kernel/notifier.c:380 kernel/notifier.c:368)
[ 13.488308][ T279] netdev_update_features (net/core/dev.c:10314)
[ 13.488493][ T279] ? __pfx_netdev_update_features (net/core/dev.c:10311)
[ 13.488747][ T279] br_device_event (net/bridge/br.c:101)
[ 13.488934][ T279] ? __pfx_br_device_event (net/bridge/br.c:29)
[ 13.489108][ T279] ? packet_notifier (net/packet/af_packet.c:4282)
[ 13.489321][ T279] notifier_call_chain (kernel/notifier.c:85 (discriminator 2))
[ 13.489514][ T279] blocking_notifier_call_chain (kernel/notifier.c:381 kernel/notifier.c:368)
[ 13.489708][ T279] netdev_change_features (net/core/dev.c:10328)
[ 13.489885][ T279] ? __pfx_netdev_change_features (net/core/dev.c:10328)
[ 13.490093][ T279] ? __lock_release (kernel/locking/lockdep.c:5525)
[ 13.490270][ T279] ? dev_mc_add (net/core/dev_addr_lists.c:887)
[ 13.490397][ T279] bond_compute_features (drivers/net/bonding/bond_main.c:1548)
[ 13.490566][ T279] ? mark_held_locks (kernel/locking/lockdep.c:4321)
[ 13.490736][ T279] ? __pfx_bond_compute_features (drivers/net/bonding/bond_main.c:1548)
[ 13.490945][ T279] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406)
[ 13.491133][ T279] ? dev_mc_add (net/core/dev_addr_lists.c:887)
[ 13.491255][ T279] ? __local_bh_enable_ip (./arch/x86/include/asm/irqflags.h:42 ./arch/x86/include/asm/irqflags.h:97 kernel/softirq.c:394)
[ 13.491415][ T279] bond_enslave (drivers/net/bonding/bond_main.c:2355)
[ 13.491578][ T279] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 13.491738][ T279] ? __pfx_bond_enslave (drivers/net/bonding/bond_main.c:1956)
[ 13.491894][ T279] ? is_bpf_text_address (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 kernel/bpf/core.c:774)
[ 13.492149][ T279] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872)
[ 13.492307][ T279] ? __kernel_text_address (kernel/extable.c:79)
[ 13.492460][ T279] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364)
[ 13.492611][ T279] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83)
[ 13.492891][ T279] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860)
[ 13.493039][ T279] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2646)
[ 13.493194][ T279] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3189 kernel/locking/mutex.h:47 kernel/locking/mutex.c:66)
[ 13.493345][ T279] ? rtnl_is_locked (net/core/rtnetlink.c:163)
[ 13.493585][ T279] ? netdev_master_upper_dev_get (net/core/dev.c:7230)
[ 13.493773][ T279] do_setlink.constprop.0 (net/core/rtnetlink.c:3125)
[ 13.493929][ T279] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:2999)
[ 13.494199][ T279] ? lock_acquire.part.0 (kernel/locking/lockdep.c:467 kernel/locking/lockdep.c:5851)
[ 13.494348][ T279] ? rtnl_newlink (net/core/rtnetlink.c:337 net/core/rtnetlink.c:4020)
[ 13.494500][ T279] ? rtnl_newlink (./include/linux/slab.h:901 net/core/rtnetlink.c:3921)
[ 13.494647][ T279] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6911)
[ 13.494901][ T279] ? __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:104)
[ 13.495052][ T279] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:79)
[ 13.495239][ T279] ? lock_acquire (kernel/locking/lockdep.c:5822)
[ 13.495388][ T279] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 37))
[ 13.495541][ T279] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:595 kernel/locking/mutex.c:735)
[ 13.495695][ T279] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114)
[ 13.495848][ T279] ? rtnl_newlink (net/core/rtnetlink.c:337 net/core/rtnetlink.c:4020)
[ 13.495999][ T279] ? __pfx___mutex_lock (kernel/locking/mutex.c:734)
[ 13.496239][ T279] ? __rtnl_newlink (net/core/rtnetlink.c:3871)
[ 13.496387][ T279] rtnl_newlink (net/core/rtnetlink.c:345 net/core/rtnetlink.c:4022)
[ 13.496538][ T279] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3912)
[ 13.496696][ T279] ? find_held_lock (kernel/locking/lockdep.c:5339)
[ 13.496952][ T279] ? __pfx___lock_release (kernel/locking/lockdep.c:5501)
[ 13.497110][ T279] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 13.497259][ T279] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6909)
[ 13.497410][ T279] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3912)
[ 13.497662][ T279] rtnetlink_rcv_msg (net/core/rtnetlink.c:6911)
[ 13.497825][ T279] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6814)
[ 13.497993][ T279] ? 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)
[ 13.498165][ T279] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3))
[ 13.498384][ T279] ? __lock_acquire (kernel/locking/lockdep.c:5226)
[ 13.498547][ T279] netlink_rcv_skb (net/netlink/af_netlink.c:2543)
[ 13.498714][ T279] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6814)
[ 13.498889][ T279] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2520)
[ 13.499152][ T279] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340)
[ 13.499318][ T279] ? 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)
[ 13.499494][ T279] netlink_unicast (net/netlink/af_netlink.c:1322 net/netlink/af_netlink.c:1348)
[ 13.499672][ T279] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1333)
[ 13.499922][ T279] ? find_held_lock (kernel/locking/lockdep.c:5339)
[ 13.500073][ T279] netlink_sendmsg (net/netlink/af_netlink.c:1892)
[ 13.500233][ T279] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1811)
[ 13.500401][ T279] ____sys_sendmsg (net/socket.c:711 net/socket.c:726 net/socket.c:2594)
[ 13.500641][ T279] ? __pfx_____sys_sendmsg (net/socket.c:2540)
[ 13.500803][ T279] ? __pfx_copy_msghdr_from_user (net/socket.c:2520)
[ 13.501007][ T279] ___sys_sendmsg (net/socket.c:2650)
[ 13.501166][ T279] ? __pfx____sys_sendmsg (net/socket.c:2637)
[ 13.501419][ T279] ? kasan_save_stack (mm/kasan/common.c:49)
[ 13.501570][ T279] ? kasan_save_stack (mm/kasan/common.c:48)
[ 13.501727][ T279] ? __kasan_record_aux_stack (mm/kasan/generic.c:544)
[ 13.501884][ T279] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:123 kernel/rcu/tree.c:3087)
[ 13.502172][ T279] ? __x64_sys_close (fs/open.c:1557 fs/open.c:1539 fs/open.c:1539)
[ 13.502323][ T279] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 13.502488][ T279] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 13.502778][ T279] ? __lock_acquire (kernel/locking/lockdep.c:5226)
[ 13.502931][ T279] ? find_held_lock (kernel/locking/lockdep.c:5339)
[ 13.503091][ T279] ? __lock_release (kernel/locking/lockdep.c:5525)
[ 13.503247][ T279] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2058 arch/x86/mm/physaddr.c:65)
[ 13.503414][ T279] ? __pfx___lock_release (kernel/locking/lockdep.c:5501)
[ 13.503562][ T279] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 13.503717][ T279] __sys_sendmsg (net/socket.c:2680)
[ 13.503882][ T279] ? __pfx___sys_sendmsg (net/socket.c:2665)
[ 13.504043][ T279] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4643)
[ 13.504251][ T279] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 13.504407][ T279] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   13.504605][  T279] RIP: 0033:0x7fa2b02de9a7
[ 13.504870][ T279] 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)
[   13.505423][  T279] RSP: 002b:00007ffc2be79128 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   13.505671][  T279] RAX: ffffffffffffffda RBX: 00007ffc2be79850 RCX: 00007fa2b02de9a7
[   13.505899][  T279] RDX: 0000000000000000 RSI: 00007ffc2be79190 RDI: 0000000000000005
[   13.506217][  T279] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   13.506456][  T279] R10: 0000000014e24910 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
print_deadlock_bug:validate_chain:__lock_acquire:down_read:blocking_notifier_call_chain