======================================
| [   20.808658][  T324] veth1: entered promiscuous mode
| [   20.810202][  T324] ------------[ cut here ]------------
| [ 20.810549][ T324] WARNING: CPU: 2 PID: 324 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   20.811212][  T324] Modules linked in: bridge stp llc 8021q vrf veth
[   20.812294][  T324] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.812721][ T324] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 20.813089][ T324] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   20.814254][  T324] RSP: 0018:ffffc90000636ef0 EFLAGS: 00010246
[   20.814863][  T324] RAX: 0000000000000000 RBX: ffff888008e42000 RCX: 0000000000000001
[   20.815360][  T324] RDX: 0000000000000000 RSI: ffffffffa2a9b941 RDI: ffffffffa22555e0
[   20.815862][  T324] RBP: ffffc90000636fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.816360][  T324] R10: ffffc90000637010 R11: ffffffffa38a8918 R12: 1ffff920000c6de2
[   20.816857][  T324] R13: 00000000000005dc R14: ffffc90000637010 R15: ffff888008e42f08
[   20.817355][  T324] FS:  00007f4c80fc0800(0000) GS:ffff8880917b7000(0000) knlGS:0000000000000000
[   20.817936][  T324] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.818352][  T324] CR2: 00000000004e5aa8 CR3: 000000000ba32004 CR4: 0000000000772ef0
[   20.818856][  T324] PKRU: 55555554
[   20.819116][  T324] Call Trace:
[   20.819367][  T324]  <TASK>
[ 20.819548][ T324] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.819898][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.820243][ T324] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.820573][ T324] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.820996][ T324] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.821338][ T324] netif_set_mtu (net/core/dev.c:9652) 
[ 20.821684][ T324] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.822040][ T324] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.822498][ T324] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.822767][ T324] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.823221][ T324] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.823607][ T324] do_set_master (net/core/rtnetlink.c:2948) 
[ 20.823957][ T324] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.824293][ T324] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.824718][ T324] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.825048][ T324] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.825374][ T324] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.825721][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.826062][ T324] ? __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:113) 
[ 20.826393][ T324] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.826807][ T324] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.827139][ T324] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.827477][ T324] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.827821][ T324] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.828156][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.828493][ T324] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.828829][ T324] ? __create_object (mm/kmemleak.c:771) 
[ 20.829162][ T324] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.829492][ T324] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.829831][ T324] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.830238][ T324] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.830575][ T324] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.830920][ T324] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.831255][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.831590][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.832229][ T324] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.832795][ T324] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.833133][ T324] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.833463][ T324] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.833802][ T324] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.834140][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.834474][ T324] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.834813][ T324] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.835144][ T324] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.835487][ T324] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.835824][ T324] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 20.836154][ T324] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.836502][ T324] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.836841][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.837177][ T324] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.837506][ T324] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.837845][ T324] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.838182][ T324] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.838987][ T324] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.839313][ T324] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.839748][ T324] ___sys_sendmsg (net/socket.c:2670) 
[ 20.840073][ T324] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.840398][ T324] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 20.840815][ T324] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.841148][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.841479][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.841823][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.842155][ T324] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.842479][ T324] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.843058][ T324] __sys_sendmsg (net/socket.c:2700) 
[ 20.843400][ T324] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.843814][ T324] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.844159][ T324] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.845186][ T324] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.845524][ T324] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.845935][  T324] RIP: 0033:0x7f4c8118d1e7
[ 20.846278][ T324] Code: 0e 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:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   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)
[   20.847669][  T324] RSP: 002b:00007fff54007458 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.848399][  T324] RAX: ffffffffffffffda RBX: 00007fff54007b80 RCX: 00007f4c8118d1e7
[   20.848898][  T324] RDX: 0000000000000000 RSI: 00007fff540074c0 RDI: 0000000000000005
[   20.849389][  T324] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.849888][  T324] R10: 000000000e93a910 R11: 0000000000000246 R12: 0000000000000004
[   20.850383][  T324] R13: 00000000686e3e9f R14: 0000000000499600 R15: 0000000000000000
| [   54.719701][  T504] ------------[ cut here ]------------
| [ 54.720241][ T504] WARNING: CPU: 0 PID: 504 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   54.721291][  T504] Modules linked in: bridge stp llc 8021q vrf veth
| [   54.724241][  T504] Tainted: [W]=WARN
[   54.724682][  T504] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 54.725354][ T504] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 54.725959][ T504] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   54.727932][  T504] RSP: 0018:ffffc90000f16f70 EFLAGS: 00010246
[   54.728611][  T504] RAX: 0000000000000000 RBX: ffff888008e42000 RCX: 0000000000000001
[   54.729435][  T504] RDX: 0000000000000000 RSI: ffffffffa2a9b941 RDI: ffffffffa22555e0
[   54.730284][  T504] RBP: ffffc90000f17058 R08: 0000000000000000 R09: 0000000000000000
[   54.731105][  T504] R10: ffffc90000f17088 R11: ffffffff9ee00130 R12: 1ffff920001e2df2
[   54.731923][  T504] R13: 00000000000005dc R14: ffffc90000f17088 R15: ffff888008e42f08
[   54.732731][  T504] FS:  00007f8b2945e800(0000) GS:ffff8880916b7000(0000) knlGS:0000000000000000
[   54.733669][  T504] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   54.734366][  T504] CR2: 00000000004e5aa8 CR3: 00000000091b2001 CR4: 0000000000772ef0
[   54.735208][  T504] PKRU: 55555554
[   54.735641][  T504] Call Trace:
[   54.736056][  T504]  <TASK>
[ 54.736336][ T504] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 54.737046][ T504] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 54.737703][ T504] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 54.738274][ T504] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 54.738809][ T504] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 54.739349][ T504] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 54.739914][ T504] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.740465][ T504] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.741035][ T504] ? ___sys_sendmsg (net/socket.c:2670) 
[ 54.741583][ T504] ? __sys_sendmsg (net/socket.c:2700) 
[ 54.742159][ T504] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.742722][ T504] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 54.743431][ T504] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.744026][ T504] netif_set_mtu (net/core/dev.c:9652) 
[ 54.744586][ T504] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 54.745195][ T504] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 54.745617][ T504] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 54.746397][ T504] br_del_if (net/bridge/br_if.c:743) bridge 
[ 54.747022][ T504] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 54.747574][ T504] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 54.748146][ T504] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 54.748726][ T504] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 54.749418][ T504] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 54.750005][ T504] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 54.750554][ T504] ? __kernel_text_address (kernel/extable.c:79) 
[ 54.751139][ T504] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.751699][ T504] ? __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:113) 
[ 54.752236][ T504] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 54.752930][ T504] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.753502][ T504] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.754076][ T504] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 54.754608][ T504] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 54.755183][ T504] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.755749][ T504] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 54.756298][ T504] ? __create_object (mm/kmemleak.c:771) 
[ 54.756869][ T504] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 54.757436][ T504] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 54.758022][ T504] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 54.758722][ T504] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 54.759287][ T504] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 54.759874][ T504] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 54.760433][ T504] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.761014][ T504] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.761569][ T504] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 54.762150][ T504] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.762706][ T504] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 54.763273][ T504] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 54.763842][ T504] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 54.764393][ T504] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.764981][ T504] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 54.765513][ T504] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 54.766101][ T504] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 54.766699][ T504] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 54.767248][ T504] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 54.767822][ T504] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 54.768380][ T504] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 54.768949][ T504] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.769508][ T504] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 54.770107][ T504] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 54.770681][ T504] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 54.771244][ T504] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 54.771810][ T504] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 54.772361][ T504] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 54.773093][ T504] ___sys_sendmsg (net/socket.c:2670) 
[ 54.773690][ T504] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 54.774232][ T504] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 54.774927][ T504] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 54.775485][ T504] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.776059][ T504] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 54.776651][ T504] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 54.777209][ T504] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 54.777789][ T504] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 54.778354][ T504] __sys_sendmsg (net/socket.c:2700) 
[ 54.778915][ T504] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 54.779591][ T504] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 54.780185][ T504] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 54.780767][ T504] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 54.781325][ T504] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   54.782034][  T504] RIP: 0033:0x7f8b2962b1e7
[ 54.782600][ T504] Code: 0e 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:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   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)
[   54.784544][  T504] RSP: 002b:00007ffefc733828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   54.785377][  T504] RAX: ffffffffffffffda RBX: 00007ffefc733f50 RCX: 00007f8b2962b1e7
[   54.786221][  T504] RDX: 0000000000000000 RSI: 00007ffefc733890 RDI: 0000000000000005
[   54.787040][  T504] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   54.787851][  T504] R10: 00007f8b29528ee8 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_del_if
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_add_if