======================================
| [   18.084357][  T301] veth1: entered promiscuous mode
| [   18.086720][  T301] ------------[ cut here ]------------
| [ 18.087127][ T301] WARNING: CPU: 3 PID: 301 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) 
| [   18.088714][  T301] Modules linked in: bridge stp llc vrf veth
[   18.090273][  T301] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.090973][ T301] 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) 
[ 18.091556][ T301] 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
[   18.093505][  T301] RSP: 0018:ffffc90000636ef0 EFLAGS: 00010246
[   18.094208][  T301] RAX: 0000000000000000 RBX: ffff88800fbba000 RCX: 0000000000000001
[   18.095095][  T301] RDX: 0000000000000000 RSI: ffffffffb629b941 RDI: ffffffffb5a555e0
[   18.095894][  T301] RBP: ffffc90000636fe0 R08: 0000000000000000 R09: 0000000000000000
[   18.096726][  T301] R10: ffffc90000637010 R11: ffffffffb70a8918 R12: 1ffff920000c6de2
[   18.097560][  T301] R13: 00000000000005dc R14: ffffc90000637010 R15: ffff88800fbbaf08
[   18.098387][  T301] FS:  00007f48a358b800(0000) GS:ffff88807e037000(0000) knlGS:0000000000000000
[   18.099361][  T301] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.100059][  T301] CR2: 00000000004e5aa8 CR3: 0000000004de5005 CR4: 0000000000772ef0
[   18.100894][  T301] PKRU: 55555554
[   18.101305][  T301] Call Trace:
[   18.101728][  T301]  <TASK>
[ 18.102015][ T301] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 18.102581][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.103133][ T301] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.103697][ T301] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.104370][ T301] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.104940][ T301] netif_set_mtu (net/core/dev.c:9652) 
[ 18.105491][ T301] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 18.106081][ T301] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 18.106704][ T301] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 18.107099][ T301] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 18.107850][ T301] br_add_if (net/bridge/br_if.c:697) bridge 
[ 18.108375][ T301] do_set_master (net/core/rtnetlink.c:2948) 
[ 18.108896][ T301] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 18.109452][ T301] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 18.110156][ T301] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 18.110717][ T301] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 18.111265][ T301] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.111824][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.112381][ T301] ? __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) 
[ 18.112938][ T301] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 18.113636][ T301] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.114186][ T301] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.114747][ T301] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 18.115291][ T301] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 18.115855][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.116395][ T301] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 18.116940][ T301] ? __create_object (mm/kmemleak.c:771) 
[ 18.117488][ T301] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 18.118065][ T301] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 18.118619][ T301] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.119286][ T301] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 18.119857][ T301] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 18.120414][ T301] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.120972][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.121530][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.122092][ T301] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 18.122647][ T301] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.123198][ T301] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.123751][ T301] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 18.124292][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.124870][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.125426][ T301] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 18.125981][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.126534][ T301] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 18.127115][ T301] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 18.127673][ T301] ? 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) 
[ 18.128226][ T301] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 18.128791][ T301] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 18.129334][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.129901][ T301] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 18.130466][ T301] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 18.131024][ T301] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 18.131593][ T301] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 18.132138][ T301] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 18.132693][ T301] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 18.133390][ T301] ___sys_sendmsg (net/socket.c:2670) 
[ 18.134246][ T301] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 18.135121][ T301] ? __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) 
[ 18.135843][ T301] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 18.136294][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.136860][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.137662][ T301] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.138072][ T301] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 18.138608][ T301] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.139444][ T301] __sys_sendmsg (net/socket.c:2700) 
[ 18.139853][ T301] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 18.140491][ T301] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 18.141071][ T301] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.141629][ T301] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.142174][ T301] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.142849][  T301] RIP: 0033:0x7f48a37581e7
[ 18.143421][ T301] 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)
[   18.145522][  T301] RSP: 002b:00007ffd4141f198 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   18.146337][  T301] RAX: ffffffffffffffda RBX: 00007ffd4141f8c0 RCX: 00007f48a37581e7
[   18.147179][  T301] RDX: 0000000000000000 RSI: 00007ffd4141f200 RDI: 0000000000000005
[   18.148004][  T301] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   18.148832][  T301] R10: 00000000028ce910 R11: 0000000000000246 R12: 0000000000000004
[   18.149663][  T301] R13: 00000000686e3ceb R14: 0000000000499600 R15: 0000000000000000
| [   18.293277][  T303] ------------[ cut here ]------------
| [ 18.294603][ T303] WARNING: CPU: 3 PID: 303 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) 
| [   18.295215][  T303] Modules linked in: bridge stp llc vrf veth
| [   18.296242][  T303] Tainted: [W]=WARN
[   18.296477][  T303] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 18.296884][ T303] 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) 
[ 18.297199][ T303] 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
[   18.298317][  T303] RSP: 0018:ffffc90000626ef0 EFLAGS: 00010246
[   18.298726][  T303] RAX: 0000000000000000 RBX: ffff88800fbba000 RCX: 0000000000000001
[   18.299183][  T303] RDX: 0000000000000000 RSI: ffffffffb629b941 RDI: ffffffffb5a555e0
[   18.299657][  T303] RBP: ffffc90000626fe0 R08: 0000000000000000 R09: 0000000000000000
[   18.300120][  T303] R10: ffffc90000627010 R11: ffffffffb70a8918 R12: 1ffff920000c4de2
[   18.300590][  T303] R13: 00000000000005dc R14: ffffc90000627010 R15: ffff88800fbbaf08
[   18.301054][  T303] FS:  00007f5f17abc800(0000) GS:ffff88807e037000(0000) knlGS:0000000000000000
[   18.301607][  T303] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   18.301991][  T303] CR2: 00000000004e5ab0 CR3: 000000000dc80002 CR4: 0000000000772ef0
[   18.302455][  T303] PKRU: 55555554
[   18.302705][  T303] Call Trace:
[   18.302933][  T303]  <TASK>
[ 18.303106][ T303] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 18.303422][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.303747][ T303] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 18.304066][ T303] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 18.304469][ T303] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 18.304790][ T303] netif_set_mtu (net/core/dev.c:9652) 
[ 18.305103][ T303] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 18.305421][ T303] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 18.305859][ T303] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 18.306100][ T303] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 18.306522][ T303] br_add_if (net/bridge/br_if.c:697) bridge 
[ 18.306884][ T303] do_set_master (net/core/rtnetlink.c:2948) 
[ 18.307196][ T303] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 18.307526][ T303] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 18.307932][ T303] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 18.308244][ T303] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 18.308560][ T303] ? __kernel_text_address (kernel/extable.c:79) 
[ 18.308884][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.309192][ T303] ? __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) 
[ 18.309497][ T303] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 18.309919][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.310230][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.310559][ T303] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 18.310867][ T303] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 18.311174][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.311501][ T303] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 18.311815][ T303] ? __create_object (mm/kmemleak.c:771) 
[ 18.312130][ T303] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 18.312435][ T303] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 18.312747][ T303] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 18.313123][ T303] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 18.313433][ T303] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 18.313753][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.314057][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.314403][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.314730][ T303] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 18.315047][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.315357][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 18.315669][ T303] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 18.315976][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.316301][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.316629][ T303] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 18.316935][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 18.317247][ T303] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 18.317589][ T303] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 18.317892][ T303] ? 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) 
[ 18.318196][ T303] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 18.318526][ T303] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 18.318838][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.319153][ T303] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 18.319461][ T303] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 18.319780][ T303] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 18.320093][ T303] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 18.320423][ T303] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 18.320737][ T303] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 18.321128][ T303] ___sys_sendmsg (net/socket.c:2670) 
[ 18.321436][ T303] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 18.321767][ T303] ? __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) 
[ 18.322149][ T303] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 18.322456][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.322775][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 18.323089][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 18.323393][ T303] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 18.323716][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 18.324039][ T303] __sys_sendmsg (net/socket.c:2700) 
[ 18.324342][ T303] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 18.324742][ T303] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 18.325062][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 18.325368][ T303] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 18.325681][ T303] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   18.326060][  T303] RIP: 0033:0x7f5f17c891e7
[ 18.326404][ T303] 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)
[   18.327501][  T303] RSP: 002b:00007ffcb811b7a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   18.327973][  T303] RAX: ffffffffffffffda RBX: 00007ffcb811bed0 RCX: 00007f5f17c891e7
[   18.328436][  T303] RDX: 0000000000000000 RSI: 00007ffcb811b810 RDI: 0000000000000005
[   18.328899][  T303] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   18.329374][  T303] R10: 0000000035c13910 R11: 0000000000000246 R12: 0000000000000004


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