======================================
| [   20.497903][  T321] veth1: entered promiscuous mode
| [   20.501600][  T321] ------------[ cut here ]------------
| [ 20.502028][ T321] WARNING: CPU: 2 PID: 321 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) 
| [   20.502928][  T321] Modules linked in: bridge stp llc sch_ingress vrf veth
[   20.504139][  T321] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.504583][ T321] 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) 
[ 20.504981][ T321] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 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 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   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 fa 61 7b 00       	call   0x7b621b
  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
[   20.506268][  T321] RSP: 0018:ffffc90000586ef0 EFLAGS: 00010246
[   20.506736][  T321] RAX: 0000000000000000 RBX: ffff88800e8a2000 RCX: 0000000000000001
[   20.507272][  T321] RDX: 0000000000000000 RSI: ffffffffb2a9b939 RDI: ffffffffb22555e0
[   20.507824][  T321] RBP: ffffc90000586fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.508364][  T321] R10: ffffc90000587010 R11: ffffffffb38a8918 R12: 1ffff920000b0de2
[   20.508905][  T321] R13: 00000000000005dc R14: ffffc90000587010 R15: ffff88800e8a2f08
[   20.509433][  T321] FS:  00007f233cb1f800(0000) GS:ffff8880817b7000(0000) knlGS:0000000000000000
[   20.510087][  T321] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.510537][  T321] CR2: 00000000004e5aa8 CR3: 0000000030d1d003 CR4: 0000000000772ef0
[   20.511093][  T321] PKRU: 55555554
[   20.511370][  T321] Call Trace:
[   20.511652][  T321]  <TASK>
[ 20.511863][ T321] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.512231][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.512779][ T321] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.513146][ T321] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.513621][ T321] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.514007][ T321] netif_set_mtu (net/core/dev.c:9652) 
[ 20.514373][ T321] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.514755][ T321] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.515245][ T321] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.515525][ T321] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.516017][ T321] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.516444][ T321] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 20.516823][ T321] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.517189][ T321] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.517635][ T321] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.518012][ T321] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.518372][ T321] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.518753][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.519124][ T321] ? __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) 
[ 20.519481][ T321] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.519933][ T321] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.520299][ T321] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.520666][ T321] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.521036][ T321] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.521397][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.521772][ T321] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.522129][ T321] ? __create_object (mm/kmemleak.c:771) 
[ 20.522493][ T321] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.522863][ T321] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.523227][ T321] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.523689][ T321] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.524074][ T321] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.524439][ T321] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.524817][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.525183][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.525541][ T321] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.525908][ T321] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.526270][ T321] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.526624][ T321] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.526996][ T321] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.527359][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.527739][ T321] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.528107][ T321] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.528467][ T321] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.528848][ T321] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.529206][ T321] ? 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) 
[ 20.529577][ T321] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 20.529951][ T321] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.530318][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.530686][ T321] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.531064][ T321] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.531426][ T321] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.531810][ T321] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.532184][ T321] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.532538][ T321] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.533009][ T321] ___sys_sendmsg (net/socket.c:2670) 
[ 20.533381][ T321] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.533758][ T321] ? __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) 
[ 20.534202][ T321] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.534562][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.534935][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.535301][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.535665][ T321] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.536034][ T321] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.536403][ T321] __sys_sendmsg (net/socket.c:2700) 
[ 20.536772][ T321] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.537214][ T321] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.537585][ T321] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.537959][ T321] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.538324][ T321] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.538776][  T321] RIP: 0033:0x7f233ccec1e7
[ 20.539176][ T321] 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)
[   20.540416][  T321] RSP: 002b:00007ffd3337b0f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.540966][  T321] RAX: ffffffffffffffda RBX: 00007ffd3337b820 RCX: 00007f233ccec1e7
[   20.541508][  T321] RDX: 0000000000000000 RSI: 00007ffd3337b160 RDI: 0000000000000005
[   20.542054][  T321] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.542584][  T321] R10: 000000001203c910 R11: 0000000000000246 R12: 0000000000000004
[   20.543128][  T321] R13: 00000000686e71ac R14: 0000000000499600 R15: 0000000000000000
| [   20.814285][  T323] ------------[ cut here ]------------
| [ 20.814626][ T323] WARNING: CPU: 3 PID: 323 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) 
| [   20.815281][  T323] Modules linked in: bridge stp llc sch_ingress vrf veth
| [   20.817255][  T323] Tainted: [W]=WARN
[   20.817503][  T323] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.817909][ T323] 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) 
[ 20.818244][ T323] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 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 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   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 fa 61 7b 00       	call   0x7b621b
  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
[   20.819406][  T323] RSP: 0018:ffffc90000566ef0 EFLAGS: 00010246
[   20.819823][  T323] RAX: 0000000000000000 RBX: ffff88800e8a2000 RCX: 0000000000000001
[   20.820309][  T323] RDX: 0000000000000000 RSI: ffffffffb2a9b939 RDI: ffffffffb22555e0
[   20.820804][  T323] RBP: ffffc90000566fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.821287][  T323] R10: ffffc90000567010 R11: ffffffffb38a8918 R12: 1ffff920000acde2
[   20.821773][  T323] R13: 00000000000005dc R14: ffffc90000567010 R15: ffff88800e8a2f08
[   20.822255][  T323] FS:  00007f3fa2a87800(0000) GS:ffff888081837000(0000) knlGS:0000000000000000
[   20.822824][  T323] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.823233][  T323] CR2: 00000000004e5ab0 CR3: 000000000e08f002 CR4: 0000000000772ef0
[   20.823741][  T323] PKRU: 55555554
[   20.823981][  T323] Call Trace:
[   20.824221][  T323]  <TASK>
[ 20.824388][ T323] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.824711][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.825052][ T323] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.825381][ T323] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.825792][ T323] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.826118][ T323] netif_set_mtu (net/core/dev.c:9652) 
[ 20.826440][ T323] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.826783][ T323] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.827226][ T323] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.827470][ T323] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.827915][ T323] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.828278][ T323] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 20.828606][ T323] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.828938][ T323] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.829351][ T323] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.829671][ T323] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.830003][ T323] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.830331][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.830657][ T323] ? __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) 
[ 20.830987][ T323] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.831386][ T323] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.831706][ T323] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.832029][ T323] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.832355][ T323] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.832677][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.833008][ T323] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.833342][ T323] ? __create_object (mm/kmemleak.c:771) 
[ 20.833668][ T323] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.833999][ T323] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.834320][ T323] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.834732][ T323] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.835069][ T323] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.835395][ T323] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.835724][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.836050][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.836370][ T323] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.836685][ T323] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.837015][ T323] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.837332][ T323] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.837657][ T323] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.837986][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.838312][ T323] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.838635][ T323] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.838971][ T323] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.839305][ T323] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.839624][ T323] ? 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) 
[ 20.839981][ T323] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 20.840317][ T323] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.840638][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.840971][ T323] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.841299][ T323] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.841623][ T323] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.841957][ T323] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.842287][ T323] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.842606][ T323] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.843022][ T323] ___sys_sendmsg (net/socket.c:2670) 
[ 20.843357][ T323] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.843677][ T323] ? __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) 
[ 20.844084][ T323] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.844409][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.844746][ T323] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.845073][ T323] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.845390][ T323] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.845707][ T323] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.846042][ T323] __sys_sendmsg (net/socket.c:2700) 
[ 20.846360][ T323] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.846768][ T323] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.847108][ T323] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.847435][ T323] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.847762][ T323] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.848159][  T323] RIP: 0033:0x7f3fa2c541e7
[ 20.848493][ T323] 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)
[   20.849640][  T323] RSP: 002b:00007ffdac0ba178 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.850134][  T323] RAX: ffffffffffffffda RBX: 00007ffdac0ba8a0 RCX: 00007f3fa2c541e7
[   20.850617][  T323] RDX: 0000000000000000 RSI: 00007ffdac0ba1e0 RDI: 0000000000000005
[   20.851106][  T323] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.851589][  T323] R10: 0000000002572910 R11: 0000000000000246 R12: 0000000000000004


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