======================================
| [   20.052939][  T300] veth1: entered promiscuous mode
| [   20.055227][  T300] ------------[ cut here ]------------
| [ 20.055597][ T300] WARNING: CPU: 2 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) 
| [   20.056262][  T300] Modules linked in: bridge stp llc vrf veth
[   20.057392][  T300] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.057814][ 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) 
[ 20.058185][ 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
[   20.059750][  T300] RSP: 0018:ffffc90000606ef0 EFLAGS: 00010246
[   20.060398][  T300] RAX: 0000000000000000 RBX: ffff88800a4ba000 RCX: 0000000000000001
[   20.061049][  T300] RDX: 0000000000000000 RSI: ffffffffb1a9b941 RDI: ffffffffb12555e0
[   20.061682][  T300] RBP: ffffc90000606fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.062190][  T300] R10: ffffc90000607010 R11: ffffffffb28a8918 R12: 1ffff920000c0de2
[   20.062694][  T300] R13: 00000000000005dc R14: ffffc90000607010 R15: ffff88800a4baf08
[   20.063195][  T300] FS:  00007fd689d9b800(0000) GS:ffff8880827b7000(0000) knlGS:0000000000000000
[   20.063772][  T300] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.064186][  T300] CR2: 00000000004e5aa8 CR3: 0000000005072001 CR4: 0000000000772ef0
[   20.064670][  T300] PKRU: 55555554
[   20.064947][  T300] Call Trace:
[   20.065199][  T300]  <TASK>
[ 20.065379][ T300] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.065707][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.066078][ T300] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.066441][ T300] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.066851][ T300] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.067175][ T300] netif_set_mtu (net/core/dev.c:9652) 
[ 20.067509][ T300] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.067856][ T300] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.068348][ T300] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.068604][ T300] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.069055][ T300] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.069422][ T300] do_set_master (net/core/rtnetlink.c:2948) 
[ 20.069746][ T300] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.070082][ T300] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.070483][ T300] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.070808][ T300] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.071136][ T300] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.071486][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.071819][ 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) 
[ 20.072146][ T300] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.072540][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.072881][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.073219][ T300] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.073540][ T300] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.073886][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.074205][ T300] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.074555][ T300] ? __create_object (mm/kmemleak.c:771) 
[ 20.074902][ T300] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.075244][ T300] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.075571][ T300] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.075974][ T300] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.076301][ T300] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.076635][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.076976][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.077303][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.077642][ T300] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.078007][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.078341][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.078682][ T300] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.079039][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.079368][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.079698][ T300] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.080032][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.080354][ T300] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.080686][ T300] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.081027][ 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) 
[ 20.081358][ T300] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.081699][ T300] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.082035][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.082386][ T300] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.082736][ T300] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.083069][ T300] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.083412][ T300] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.083738][ T300] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.084070][ T300] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.084481][ T300] ___sys_sendmsg (net/socket.c:2670) 
[ 20.084809][ T300] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.085155][ 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) 
[ 20.085558][ T300] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.085898][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.086222][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.086566][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.086898][ 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) 
[ 20.087220][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.087570][ T300] __sys_sendmsg (net/socket.c:2700) 
[ 20.087906][ T300] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.088303][ T300] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.088640][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.088974][ T300] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.089305][ T300] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.089698][  T300] RIP: 0033:0x7fd689f681e7
[ 20.090048][ 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)
[   20.091180][  T300] RSP: 002b:00007fffdd905f08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.091672][  T300] RAX: ffffffffffffffda RBX: 00007fffdd906630 RCX: 00007fd689f681e7
[   20.092163][  T300] RDX: 0000000000000000 RSI: 00007fffdd905f70 RDI: 0000000000000005
[   20.092637][  T300] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.093121][  T300] R10: 00000000360de910 R11: 0000000000000246 R12: 0000000000000004
[   20.093907][  T300] R13: 00000000686e1a6c R14: 0000000000499600 R15: 0000000000000000
| [   20.236437][  T302] ------------[ cut here ]------------
| [ 20.236785][ T302] WARNING: CPU: 3 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) 
| [   20.237436][  T302] Modules linked in: bridge stp llc vrf veth
| [   20.238536][  T302] Tainted: [W]=WARN
[   20.238798][  T302] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.239190][ 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) 
[ 20.239514][ 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
[   20.240653][  T302] RSP: 0018:ffffc90000606ef0 EFLAGS: 00010246
[   20.241079][  T302] RAX: 0000000000000000 RBX: ffff88800a4ba000 RCX: 0000000000000001
[   20.241554][  T302] RDX: 0000000000000000 RSI: ffffffffb1a9b941 RDI: ffffffffb12555e0
[   20.242033][  T302] RBP: ffffc90000606fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.242500][  T302] R10: ffffc90000607010 R11: ffffffffb28a8918 R12: 1ffff920000c0de2
[   20.242978][  T302] R13: 00000000000005dc R14: ffffc90000607010 R15: ffff88800a4baf08
[   20.243469][  T302] FS:  00007fa9d0aa5800(0000) GS:ffff888082837000(0000) knlGS:0000000000000000
[   20.244135][  T302] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.244529][  T302] CR2: 00000000004e5ab0 CR3: 000000000a6c7006 CR4: 0000000000772ef0
[   20.245019][  T302] PKRU: 55555554
[   20.245267][  T302] Call Trace:
[   20.245520][  T302]  <TASK>
[ 20.245679][ T302] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.246009][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.246331][ T302] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.246650][ T302] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.247049][ T302] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.247370][ T302] netif_set_mtu (net/core/dev.c:9652) 
[ 20.247676][ T302] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.248023][ T302] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.248456][ T302] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.248696][ T302] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.249145][ T302] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.249514][ T302] do_set_master (net/core/rtnetlink.c:2948) 
[ 20.249848][ T302] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.250190][ T302] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.250577][ T302] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.250911][ T302] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.251230][ T302] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.251562][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.251904][ 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) 
[ 20.252232][ T302] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.252616][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.252934][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.253243][ T302] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.253579][ T302] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.253897][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.254219][ T302] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.254523][ T302] ? __create_object (mm/kmemleak.c:771) 
[ 20.254846][ T302] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.255194][ T302] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.255502][ T302] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.255902][ T302] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.256217][ T302] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.256538][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.256858][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.257175][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.257493][ T302] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.257826][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.258151][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.258475][ T302] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.258801][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.259126][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.259458][ T302] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.259786][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.260096][ T302] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.260415][ T302] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.260725][ 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) 
[ 20.261043][ T302] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.261356][ T302] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.261664][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.261998][ T302] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.262309][ T302] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.262694][ T302] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.263065][ T302] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.263410][ T302] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.263743][ T302] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.264163][ T302] ___sys_sendmsg (net/socket.c:2670) 
[ 20.264502][ T302] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.264839][ 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) 
[ 20.265248][ T302] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.265565][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.265885][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.266209][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.266523][ 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) 
[ 20.266861][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.267183][ T302] __sys_sendmsg (net/socket.c:2700) 
[ 20.267501][ T302] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.267893][ T302] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.268211][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.268519][ T302] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.268835][ T302] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.269227][  T302] RIP: 0033:0x7fa9d0c721e7
[ 20.269551][ 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)
[   20.270671][  T302] RSP: 002b:00007ffc591ddb38 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.271167][  T302] RAX: ffffffffffffffda RBX: 00007ffc591de260 RCX: 00007fa9d0c721e7
[   20.271659][  T302] RDX: 0000000000000000 RSI: 00007ffc591ddba0 RDI: 0000000000000005
[   20.272132][  T302] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.272594][  T302] R10: 0000000039e45910 R11: 0000000000000246 R12: 0000000000000004


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