======================================
| [   19.523849][  T300] veth1: entered promiscuous mode
| [   19.526351][  T300] ------------[ cut here ]------------
| [ 19.526718][ T300] WARNING: CPU: 0 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) 
| [   19.527374][  T300] Modules linked in: bridge stp llc vrf veth
[   19.528471][  T300] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.528893][ 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) 
[ 19.529231][ T300] 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
[   19.531329][  T300] RSP: 0018:ffffc900005f6ef0 EFLAGS: 00010246
[   19.531770][  T300] RAX: 0000000000000000 RBX: ffff88800f79a000 RCX: 0000000000000001
[   19.532261][  T300] RDX: 0000000000000000 RSI: ffffffffba69b941 RDI: ffffffffb9e555e0
[   19.532759][  T300] RBP: ffffc900005f6fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.533249][  T300] R10: ffffc900005f7010 R11: ffffffffbb4a8918 R12: 1ffff920000bede2
[   19.533769][  T300] R13: 00000000000005dc R14: ffffc900005f7010 R15: ffff88800f79af08
[   19.534274][  T300] FS:  00007ff4a4dce800(0000) GS:ffff888079ab7000(0000) knlGS:0000000000000000
[   19.534846][  T300] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.535534][  T300] CR2: 00000000004e5aa8 CR3: 000000000bdc4002 CR4: 0000000000772ef0
[   19.536031][  T300] PKRU: 55555554
[   19.536278][  T300] Call Trace:
[   19.536533][  T300]  <TASK>
[ 19.536708][ T300] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.537044][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.537434][ T300] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.537776][ T300] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.538190][ T300] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.538542][ T300] netif_set_mtu (net/core/dev.c:9652) 
[ 19.538875][ T300] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.539231][ T300] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.539694][ T300] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.539946][ T300] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.540392][ T300] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.540775][ T300] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.541118][ T300] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.541450][ T300] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.541879][ T300] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.542245][ T300] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.542582][ T300] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.542916][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.543244][ 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) 
[ 19.543581][ T300] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.543994][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.544327][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.544655][ T300] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.544990][ T300] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.545320][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.545650][ T300] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.545975][ T300] ? __create_object (mm/kmemleak.c:771) 
[ 19.546345][ T300] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.546699][ T300] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.547028][ T300] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.547431][ T300] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.547779][ T300] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.548110][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.548438][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.548777][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.549107][ T300] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.549434][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.549777][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.550105][ T300] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.550432][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.550774][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.551135][ T300] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.551463][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.551836][ T300] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.552168][ T300] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.552492][ 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) 
[ 19.552832][ T300] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.553171][ T300] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.553490][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.553831][ T300] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.554160][ T300] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.554480][ T300] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.554823][ T300] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.555208][ T300] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.555548][ T300] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.555960][ T300] ___sys_sendmsg (net/socket.c:2670) 
[ 19.556285][ T300] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.556628][ 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) 
[ 19.557041][ T300] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.557372][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.557710][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.558041][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.558366][ 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) 
[ 19.558707][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.559038][ T300] __sys_sendmsg (net/socket.c:2700) 
[ 19.559396][ T300] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.559818][ T300] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.560158][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.560487][ T300] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.560825][ T300] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.561232][  T300] RIP: 0033:0x7ff4a4f9b1e7
[ 19.561586][ 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)
[   19.562756][  T300] RSP: 002b:00007fffe8e1f4a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.563290][  T300] RAX: ffffffffffffffda RBX: 00007fffe8e1fbd0 RCX: 00007ff4a4f9b1e7
[   19.563799][  T300] RDX: 0000000000000000 RSI: 00007fffe8e1f510 RDI: 0000000000000005
[   19.564295][  T300] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.564791][  T300] R10: 000000001075b910 R11: 0000000000000246 R12: 0000000000000004
[   19.565297][  T300] R13: 00000000686e1a70 R14: 0000000000499600 R15: 0000000000000000
| [   19.693869][  T302] ------------[ cut here ]------------
| [ 19.694263][ T302] WARNING: CPU: 2 PID: 302 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) 
| [   19.694920][  T302] Modules linked in: bridge stp llc vrf veth
| [   19.696018][  T302] Tainted: [W]=WARN
[   19.696271][  T302] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.696702][ T302] 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) 
[ 19.697037][ T302] 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
[   19.698217][  T302] RSP: 0018:ffffc900005e6ef0 EFLAGS: 00010246
[   19.698629][  T302] RAX: 0000000000000000 RBX: ffff88800f79a000 RCX: 0000000000000001
[   19.699117][  T302] RDX: 0000000000000000 RSI: ffffffffba69b941 RDI: ffffffffb9e555e0
[   19.699610][  T302] RBP: ffffc900005e6fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.700103][  T302] R10: ffffc900005e7010 R11: ffffffffbb4a8918 R12: 1ffff920000bcde2
[   19.700598][  T302] R13: 00000000000005dc R14: ffffc900005e7010 R15: ffff88800f79af08
[   19.701083][  T302] FS:  00007fda0a19c800(0000) GS:ffff888079bb7000(0000) knlGS:0000000000000000
[   19.701653][  T302] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.702085][  T302] CR2: 00000000004e5ab0 CR3: 000000000a7be002 CR4: 0000000000772ef0
[   19.702596][  T302] PKRU: 55555554
[   19.702840][  T302] Call Trace:
[   19.703089][  T302]  <TASK>
[ 19.703265][ T302] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.703646][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.703973][ T302] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.704293][ T302] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.704714][ T302] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.705094][ T302] netif_set_mtu (net/core/dev.c:9652) 
[ 19.705443][ T302] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.705808][ T302] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.706273][ T302] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.706553][ T302] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.707000][ T302] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.707385][ T302] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.707732][ T302] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.708064][ T302] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.708475][ T302] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.708830][ T302] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.709167][ T302] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.709533][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.709876][ T302] ? __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) 
[ 19.710220][ T302] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.710644][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.710983][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.711321][ T302] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.711666][ T302] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.712014][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.712362][ T302] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.712710][ T302] ? __create_object (mm/kmemleak.c:771) 
[ 19.713048][ T302] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.713384][ T302] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.713744][ T302] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.714168][ T302] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.714536][ T302] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.714867][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.715264][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.715631][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.715955][ T302] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.716272][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.716605][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.716933][ T302] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.717265][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.717618][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.717955][ T302] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.718293][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.718638][ T302] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.718973][ T302] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.719304][ T302] ? 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) 
[ 19.719643][ T302] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.719987][ T302] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.720317][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.720649][ T302] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.720980][ T302] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.721302][ T302] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.721646][ T302] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.721986][ T302] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.722319][ T302] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.722752][ T302] ___sys_sendmsg (net/socket.c:2670) 
[ 19.723072][ T302] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.723420][ T302] ? __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) 
[ 19.723835][ T302] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.724188][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.724532][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.724868][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.725218][ T302] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.725576][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.725934][ T302] __sys_sendmsg (net/socket.c:2700) 
[ 19.726267][ T302] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.726699][ T302] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.727048][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.727402][ T302] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.727775][ T302] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.728181][  T302] RIP: 0033:0x7fda0a3691e7
[ 19.728574][ T302] 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)
[   19.729723][  T302] RSP: 002b:00007fffcb473608 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.730216][  T302] RAX: ffffffffffffffda RBX: 00007fffcb473d30 RCX: 00007fda0a3691e7
[   19.730735][  T302] RDX: 0000000000000000 RSI: 00007fffcb473670 RDI: 0000000000000005
[   19.731230][  T302] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.731741][  T302] R10: 0000000017cb8910 R11: 0000000000000246 R12: 0000000000000004


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