======================================
| [   19.679171][  T302] veth1: entered promiscuous mode
| [   19.681537][  T302] ------------[ cut here ]------------
| [ 19.681856][ 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) 
| [   19.683138][  T302] Modules linked in: bridge stp llc vrf veth
[   19.684194][  T302] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.684587][ 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) 
[ 19.684921][ 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
[   19.686029][  T302] RSP: 0018:ffffc90000776ef0 EFLAGS: 00010246
[   19.686445][  T302] RAX: 0000000000000000 RBX: ffff88800fdba000 RCX: 0000000000000001
[   19.686958][  T302] RDX: 0000000000000000 RSI: ffffffffb9e9b941 RDI: ffffffffb96555e0
[   19.687433][  T302] RBP: ffffc90000776fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.687933][  T302] R10: ffffc90000777010 R11: ffffffffbaca8918 R12: 1ffff920000eede2
[   19.688409][  T302] R13: 00000000000005dc R14: ffffc90000777010 R15: ffff88800fdbaf08
[   19.688892][  T302] FS:  00007f78fae40800(0000) GS:ffff888073837000(0000) knlGS:0000000000000000
[   19.689435][  T302] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.689848][  T302] CR2: 00000000004e5aa8 CR3: 0000000005a79006 CR4: 0000000000772ef0
[   19.690337][  T302] PKRU: 55555554
[   19.690604][  T302] Call Trace:
[   19.690867][  T302]  <TASK>
[ 19.691032][ T302] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.691347][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.691679][ T302] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.691995][ T302] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.692394][ T302] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.692732][ T302] netif_set_mtu (net/core/dev.c:9652) 
[ 19.693056][ T302] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.693374][ T302] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.693809][ T302] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.694046][ T302] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.694494][ T302] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.694873][ T302] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.695189][ T302] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.695516][ T302] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.695921][ T302] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.696239][ T302] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.696555][ T302] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.696874][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.697185][ 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) 
[ 19.697509][ T302] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.697895][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.698206][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.698522][ T302] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.698862][ T302] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.699168][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.699484][ T302] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.699800][ T302] ? __create_object (mm/kmemleak.c:771) 
[ 19.700112][ T302] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.700420][ T302] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.700743][ T302] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.701126][ T302] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.701439][ T302] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.701761][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.702068][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.702397][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.702749][ T302] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.703079][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.703388][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.703725][ T302] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.704037][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.704348][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.704680][ T302] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.704989][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.705297][ T302] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.705625][ T302] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.705935][ 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) 
[ 19.706242][ T302] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.706564][ T302] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.706910][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.707223][ T302] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.707546][ T302] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.707859][ T302] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.708172][ T302] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.708494][ T302] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.708806][ T302] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.709199][ T302] ___sys_sendmsg (net/socket.c:2670) 
[ 19.709512][ T302] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.709822][ 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) 
[ 19.710206][ T302] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.710534][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.710895][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.711211][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.711565][ 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) 
[ 19.711878][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.712193][ T302] __sys_sendmsg (net/socket.c:2700) 
[ 19.712525][ T302] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.712929][ T302] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.713251][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.713574][ T302] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.713894][ T302] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.714277][  T302] RIP: 0033:0x7f78fb00d1e7
[ 19.714612][ 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)
[   19.715748][  T302] RSP: 002b:00007ffdd974f918 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.716223][  T302] RAX: ffffffffffffffda RBX: 00007ffdd9750040 RCX: 00007f78fb00d1e7
[   19.716707][  T302] RDX: 0000000000000000 RSI: 00007ffdd974f980 RDI: 0000000000000005
[   19.717177][  T302] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.717654][  T302] R10: 00000000038be910 R11: 0000000000000246 R12: 0000000000000004
[   19.718139][  T302] R13: 00000000686e133f R14: 0000000000499600 R15: 0000000000000000
| [   19.832778][  T303] ------------[ cut here ]------------
| [ 19.833093][ T303] WARNING: CPU: 0 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) 
| [   19.834228][  T303] Modules linked in: bridge stp llc vrf veth
| [   19.835269][  T303] Tainted: [W]=WARN
[   19.835518][  T303] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.835904][ 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) 
[ 19.836230][ 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
[   19.837340][  T303] RSP: 0018:ffffc90000776ef0 EFLAGS: 00010246
[   19.837736][  T303] RAX: 0000000000000000 RBX: ffff88800fdba000 RCX: 0000000000000001
[   19.838204][  T303] RDX: 0000000000000000 RSI: ffffffffb9e9b941 RDI: ffffffffb96555e0
[   19.838680][  T303] RBP: ffffc90000776fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.839139][  T303] R10: ffffc90000777010 R11: ffffffffbaca8918 R12: 1ffff920000eede2
[   19.839608][  T303] R13: 00000000000005dc R14: ffffc90000777010 R15: ffff88800fdbaf08
[   19.840073][  T303] FS:  00007f935e774800(0000) GS:ffff8880736b7000(0000) knlGS:0000000000000000
[   19.840632][  T303] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.841018][  T303] CR2: 00000000004e5ab0 CR3: 0000000005a79004 CR4: 0000000000772ef0
[   19.841484][  T303] PKRU: 55555554
[   19.841732][  T303] Call Trace:
[   19.841961][  T303]  <TASK>
[ 19.842121][ T303] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.842448][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.842795][ T303] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.843109][ T303] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.843503][ T303] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.843824][ T303] netif_set_mtu (net/core/dev.c:9652) 
[ 19.844135][ T303] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.844457][ T303] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.844911][ T303] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.845154][ T303] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.845587][ T303] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.845944][ T303] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.846269][ T303] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.846601][ T303] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.847012][ T303] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.847331][ T303] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.847656][ T303] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.847983][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.848306][ 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) 
[ 19.848632][ T303] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.849026][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.849351][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.849677][ T303] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.849993][ T303] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.850320][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.850648][ T303] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.850962][ T303] ? __create_object (mm/kmemleak.c:771) 
[ 19.851283][ T303] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.851609][ T303] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.851939][ T303] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.852336][ T303] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.852729][ T303] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.853058][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.853375][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.853714][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.854035][ T303] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.854358][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.854684][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.855005][ T303] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.855317][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.855652][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.855967][ T303] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.856276][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.856599][ T303] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.856974][ T303] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.857293][ 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) 
[ 19.857621][ T303] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.857937][ T303] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.858245][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.858567][ T303] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.858877][ T303] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.859220][ T303] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.859554][ T303] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.859870][ T303] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.860194][ T303] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.860879][ T303] ___sys_sendmsg (net/socket.c:2670) 
[ 19.861188][ T303] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.861516][ 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) 
[ 19.861915][ T303] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.862231][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.862569][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.862880][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.863185][ 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) 
[ 19.863498][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.863808][ T303] __sys_sendmsg (net/socket.c:2700) 
[ 19.864128][ T303] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.864514][ T303] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.864832][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.865139][ T303] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.865449][ T303] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.866066][  T303] RIP: 0033:0x7f935e9411e7
[ 19.866634][ 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)
[   19.867764][  T303] RSP: 002b:00007ffccca88498 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.868244][  T303] RAX: ffffffffffffffda RBX: 00007ffccca88bc0 RCX: 00007f935e9411e7
[   19.868950][  T303] RDX: 0000000000000000 RSI: 00007ffccca88500 RDI: 0000000000000005
[   19.869418][  T303] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.869891][  T303] R10: 0000000017558910 R11: 0000000000000246 R12: 0000000000000004


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