======================================
| [   19.123631][  T298] veth1: entered promiscuous mode
| [   19.125909][  T298] ------------[ cut here ]------------
| [ 19.126230][ T298] WARNING: CPU: 3 PID: 298 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) 
| [   19.127558][  T298] Modules linked in: bridge stp llc vrf veth
[   19.128603][  T298] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.129009][ T298] 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) 
[ 19.129336][ T298] 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
[   19.130455][  T298] RSP: 0018:ffffc90000b46ef0 EFLAGS: 00010246
[   19.130859][  T298] RAX: 0000000000000000 RBX: ffff8880167c2000 RCX: 0000000000000001
[   19.131325][  T298] RDX: 0000000000000000 RSI: ffffffff9709b939 RDI: ffffffff968555e0
[   19.131801][  T298] RBP: ffffc90000b46fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.132271][  T298] R10: ffffc90000b47010 R11: ffffffff97ea8918 R12: 1ffff92000168de2
[   19.132748][  T298] R13: 00000000000005dc R14: ffffc90000b47010 R15: ffff8880167c2f08
[   19.133216][  T298] FS:  00007fb7e90ff800(0000) GS:ffff88809d237000(0000) knlGS:0000000000000000
[   19.133766][  T298] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.134167][  T298] CR2: 00000000004e5aa8 CR3: 0000000012f47001 CR4: 0000000000772ef0
[   19.134627][  T298] PKRU: 55555554
[   19.134878][  T298] Call Trace:
[   19.135111][  T298]  <TASK>
[ 19.135273][ T298] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.135588][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.136102][ T298] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.136411][ T298] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.136804][ T298] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.137113][ T298] netif_set_mtu (net/core/dev.c:9652) 
[ 19.137423][ T298] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.137753][ T298] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.138185][ T298] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.138427][ T298] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.138861][ T298] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.139213][ T298] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 19.139528][ T298] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.139849][ T298] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.140246][ T298] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.140559][ T298] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.140872][ T298] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.141187][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.141500][ T298] ? __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) 
[ 19.141818][ T298] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.142204][ T298] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.142518][ T298] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.142831][ T298] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.143140][ T298] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.143448][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.143766][ T298] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.144074][ T298] ? __create_object (mm/kmemleak.c:771) 
[ 19.144384][ T298] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.144709][ T298] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.145059][ T298] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.145444][ T298] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.145780][ T298] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.146097][ T298] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.146403][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.146716][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.147035][ T298] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.147343][ T298] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.147653][ T298] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.147969][ T298] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.148280][ T298] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.148592][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.148913][ T298] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.149224][ T298] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.149546][ T298] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.149878][ T298] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.150187][ T298] ? 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) 
[ 19.150495][ T298] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.150814][ T298] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.151118][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.151430][ T298] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.151751][ T298] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.152060][ T298] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.152377][ T298] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.152687][ T298] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.153003][ T298] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.153398][ T298] ___sys_sendmsg (net/socket.c:2670) 
[ 19.153702][ T298] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.154024][ T298] ? __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) 
[ 19.154408][ T298] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.154739][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.155053][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.155374][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.155718][ T298] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.156246][ T298] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.156840][ T298] __sys_sendmsg (net/socket.c:2700) 
[ 19.157402][ T298] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.157809][ T298] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.158136][ T298] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.158448][ T298] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.158768][ T298] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.159155][  T298] RIP: 0033:0x7fb7e92cc1e7
[ 19.159493][ T298] 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)
[   19.160607][  T298] RSP: 002b:00007ffc44935068 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.161090][  T298] RAX: ffffffffffffffda RBX: 00007ffc44935790 RCX: 00007fb7e92cc1e7
[   19.161568][  T298] RDX: 0000000000000000 RSI: 00007ffc449350d0 RDI: 0000000000000005
[   19.162039][  T298] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.162507][  T298] R10: 000000001d2f7910 R11: 0000000000000246 R12: 0000000000000004
[   19.162983][  T298] R13: 00000000686e6275 R14: 0000000000499600 R15: 0000000000000000
| [   19.286444][  T300] ------------[ cut here ]------------
| [ 19.286806][ T300] WARNING: CPU: 3 PID: 300 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) 
| [   19.287463][  T300] Modules linked in: bridge stp llc vrf veth
| [   19.288781][  T300] Tainted: [W]=WARN
[   19.289034][  T300] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.289421][ T300] 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) 
[ 19.289790][ T300] 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
[   19.291163][  T300] RSP: 0018:ffffc90000b46ef0 EFLAGS: 00010246
[   19.291578][  T300] RAX: 0000000000000000 RBX: ffff8880167c2000 RCX: 0000000000000001
[   19.292273][  T300] RDX: 0000000000000000 RSI: ffffffff9709b939 RDI: ffffffff968555e0
[   19.292966][  T300] RBP: ffffc90000b46fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.293455][  T300] R10: ffffc90000b47010 R11: ffffffff97ea8918 R12: 1ffff92000168de2
[   19.294131][  T300] R13: 00000000000005dc R14: ffffc90000b47010 R15: ffff8880167c2f08
[   19.294619][  T300] FS:  00007f9800f21800(0000) GS:ffff88809d237000(0000) knlGS:0000000000000000
[   19.295410][  T300] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.295957][  T300] CR2: 00000000004e5ab0 CR3: 000000000974d004 CR4: 0000000000772ef0
[   19.296456][  T300] PKRU: 55555554
[   19.296699][  T300] Call Trace:
[   19.296953][  T300]  <TASK>
[ 19.297123][ T300] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.297451][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.297835][ T300] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.298170][ T300] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.298581][ T300] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.298919][ T300] netif_set_mtu (net/core/dev.c:9652) 
[ 19.299245][ T300] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.299579][ T300] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.300035][ T300] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.300282][ T300] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.300744][ T300] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.301118][ T300] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 19.301451][ T300] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.301842][ T300] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.302272][ T300] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.302597][ T300] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.302931][ T300] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.303267][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.303604][ T300] ? __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) 
[ 19.303945][ T300] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.304352][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.304697][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.305032][ T300] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.305358][ T300] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.305689][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.306029][ T300] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.306355][ T300] ? __create_object (mm/kmemleak.c:771) 
[ 19.306683][ T300] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.307051][ T300] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.307383][ T300] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.307796][ T300] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.308130][ T300] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.308612][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.309213][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.309673][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.309993][ T300] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.310300][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.310609][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.310981][ T300] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.311290][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.311604][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.311954][ T300] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.312262][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.312574][ T300] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.312907][ T300] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.313213][ T300] ? 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) 
[ 19.313521][ T300] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.313850][ T300] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.314156][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.314468][ T300] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.314820][ T300] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.315159][ T300] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.315493][ T300] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.315875][ T300] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.316202][ T300] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.316612][ T300] ___sys_sendmsg (net/socket.c:2670) 
[ 19.316940][ T300] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.317264][ T300] ? __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) 
[ 19.317675][ T300] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.318010][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.318337][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.318669][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.319002][ T300] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.319327][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.319661][ T300] __sys_sendmsg (net/socket.c:2700) 
[ 19.320030][ T300] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.320443][ T300] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.320789][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.321120][ T300] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.321446][ T300] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.321859][  T300] RIP: 0033:0x7f98010ee1e7
[ 19.322197][ T300] 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)
[   19.323388][  T300] RSP: 002b:00007ffcf722e4b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.323931][  T300] RAX: ffffffffffffffda RBX: 00007ffcf722ebe0 RCX: 00007f98010ee1e7
[   19.324421][  T300] RDX: 0000000000000000 RSI: 00007ffcf722e520 RDI: 0000000000000005
[   19.324939][  T300] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.325457][  T300] R10: 0000000005748910 R11: 0000000000000246 R12: 0000000000000004


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