======================================
| [   19.080946][  T300] veth1: entered promiscuous mode
| [   19.085213][  T300] ------------[ cut here ]------------
| [ 19.085747][ 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) 
| [   19.086828][  T300] Modules linked in: bridge stp llc vrf veth
[   19.088824][  T300] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.089474][ 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) 
[ 19.090041][ 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
[   19.091526][  T300] RSP: 0018:ffffc90000626ef0 EFLAGS: 00010246
[   19.092202][  T300] RAX: 0000000000000000 RBX: ffff8880050aa000 RCX: 0000000000000001
[   19.092667][  T300] RDX: 0000000000000000 RSI: ffffffffa8a9b941 RDI: ffffffffa82555e0
[   19.093309][  T300] RBP: ffffc90000626fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.093773][  T300] R10: ffffc90000627010 R11: ffffffffa98a8918 R12: 1ffff920000c4de2
[   19.094377][  T300] R13: 00000000000005dc R14: ffffc90000627010 R15: ffff8880050aaf08
[   19.094842][  T300] FS:  00007fbc64a47800(0000) GS:ffff88808b837000(0000) knlGS:0000000000000000
[   19.095388][  T300] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.095780][  T300] CR2: 00000000004e5aa8 CR3: 000000000dd3f005 CR4: 0000000000772ef0
[   19.096257][  T300] PKRU: 55555554
[   19.096491][  T300] Call Trace:
[   19.096723][  T300]  <TASK>
[ 19.096893][ T300] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.097207][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.097522][ T300] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.097830][ T300] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.098222][ T300] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.098538][ T300] netif_set_mtu (net/core/dev.c:9652) 
[ 19.098849][ T300] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.099176][ T300] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.099603][ T300] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.099841][ T300] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.100271][ T300] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.100656][ T300] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.100975][ T300] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.101282][ T300] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.101667][ T300] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.101979][ T300] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.102284][ T300] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.102594][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.102924][ 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) 
[ 19.103233][ T300] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.103613][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.103929][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.104234][ T300] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.104542][ T300] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.104847][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.105164][ T300] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.105468][ T300] ? __create_object (mm/kmemleak.c:771) 
[ 19.105779][ T300] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.106092][ T300] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.106399][ T300] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.106779][ T300] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.107098][ T300] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.107409][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.107716][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.108035][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.108342][ T300] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.108651][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.108967][ T300] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.109274][ T300] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.109583][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.109902][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.110211][ T300] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.110539][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.110848][ T300] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.111174][ T300] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.111482][ 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) 
[ 19.111792][ T300] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.112117][ T300] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.112424][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.112736][ T300] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.113053][ T300] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.113363][ T300] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.113677][ T300] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.113997][ T300] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.114308][ T300] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.114703][ T300] ___sys_sendmsg (net/socket.c:2670) 
[ 19.115016][ T300] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.115321][ 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) 
[ 19.115710][ T300] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.116029][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.116335][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.116651][ T300] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.116965][ 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) 
[ 19.117277][ T300] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.117591][ T300] __sys_sendmsg (net/socket.c:2700) 
[ 19.117907][ T300] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.118292][ T300] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.118615][ T300] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.118938][ T300] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.119252][ T300] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.119629][  T300] RIP: 0033:0x7fbc64c141e7
[ 19.119959][ 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)
[   19.121094][  T300] RSP: 002b:00007ffe2de0fd78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.121569][  T300] RAX: ffffffffffffffda RBX: 00007ffe2de104a0 RCX: 00007fbc64c141e7
[   19.122042][  T300] RDX: 0000000000000000 RSI: 00007ffe2de0fde0 RDI: 0000000000000005
[   19.122506][  T300] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.122987][  T300] R10: 0000000030bbe910 R11: 0000000000000246 R12: 0000000000000004
[   19.123454][  T300] R13: 00000000686e1e3a R14: 0000000000499600 R15: 0000000000000000
| [   19.270379][  T302] ------------[ cut here ]------------
| [ 19.270815][ 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) 
| [   19.271529][  T302] Modules linked in: bridge stp llc vrf veth
| [   19.272614][  T302] Tainted: [W]=WARN
[   19.272979][  T302] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.273518][ 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) 
[ 19.274002][ 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
[   19.275359][  T302] RSP: 0018:ffffc900005a6ef0 EFLAGS: 00010246
[   19.275927][  T302] RAX: 0000000000000000 RBX: ffff8880050aa000 RCX: 0000000000000001
[   19.276469][  T302] RDX: 0000000000000000 RSI: ffffffffa8a9b941 RDI: ffffffffa82555e0
[   19.277124][  T302] RBP: ffffc900005a6fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.277675][  T302] R10: ffffc900005a7010 R11: ffffffffa98a8918 R12: 1ffff920000b4de2
[   19.278334][  T302] R13: 00000000000005dc R14: ffffc900005a7010 R15: ffff8880050aaf08
[   19.278982][  T302] FS:  00007f7ab292e800(0000) GS:ffff88808b7b7000(0000) knlGS:0000000000000000
[   19.279612][  T302] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.280180][  T302] CR2: 00000000004e5ab0 CR3: 000000000dd4e002 CR4: 0000000000772ef0
[   19.280781][  T302] PKRU: 55555554
[   19.281075][  T302] Call Trace:
[   19.281467][  T302]  <TASK>
[ 19.281676][ T302] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.282112][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.282574][ T302] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.283047][ T302] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.283522][ T302] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.284001][ T302] netif_set_mtu (net/core/dev.c:9652) 
[ 19.284466][ T302] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.284940][ T302] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.285511][ T302] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.285787][ T302] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.286433][ T302] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.286815][ T302] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.287264][ T302] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.287603][ T302] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.288301][ T302] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.288635][ T302] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.288985][ T302] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.289415][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.289810][ 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) 
[ 19.290185][ T302] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.290598][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.291034][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.291366][ T302] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.291730][ T302] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.292141][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.292463][ T302] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.292779][ T302] ? __create_object (mm/kmemleak.c:771) 
[ 19.293142][ T302] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.293471][ T302] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.293792][ T302] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.294219][ T302] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.294550][ T302] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.294897][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.295218][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.295552][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.295895][ T302] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.296226][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.296576][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.296932][ T302] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.297283][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.297608][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.297959][ T302] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.298571][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.298917][ T302] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.299492][ T302] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.299814][ 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) 
[ 19.300155][ T302] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.300488][ T302] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.300819][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.301416][ T302] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.301745][ T302] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.302090][ T302] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.302650][ T302] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.302999][ T302] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.303331][ T302] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.303983][ T302] ___sys_sendmsg (net/socket.c:2670) 
[ 19.304322][ T302] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.305128][ 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) 
[ 19.305870][ T302] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.306456][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.307452][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.308052][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.308613][ 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) 
[ 19.309081][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.309581][ T302] __sys_sendmsg (net/socket.c:2700) 
[ 19.310017][ T302] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.310568][ T302] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.311047][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.311609][ T302] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.312619][ T302] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.313757][  T302] RIP: 0033:0x7f7ab2afb1e7
[ 19.314353][ 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)
[   19.316027][  T302] RSP: 002b:00007ffd1f1bb638 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.316905][  T302] RAX: ffffffffffffffda RBX: 00007ffd1f1bbd60 RCX: 00007f7ab2afb1e7
[   19.317734][  T302] RDX: 0000000000000000 RSI: 00007ffd1f1bb6a0 RDI: 0000000000000005
[   19.319006][  T302] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.320271][  T302] R10: 000000002e9cd910 R11: 0000000000000246 R12: 0000000000000004


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