======================================
| [   20.521135][  T273] veth0: entered promiscuous mode
| [   20.525049][  T273] ------------[ cut here ]------------
| [ 20.525442][ T273] WARNING: CPU: 0 PID: 273 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) 
| [   20.526140][  T273] Modules linked in: bridge stp llc veth
[   20.527494][  T273] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.527907][ T273] 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) 
[ 20.528255][ T273] Code: 00 00 8b 05 87 1c 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 ca d1 79 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 87 1c 38 02    	mov    0x2381c87(%rip),%eax        # 0x2381c8f
   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 ca d1 79 00       	call   0x79d1eb
  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
[   20.529717][  T273] RSP: 0018:ffffc90000a36ef0 EFLAGS: 00010246
[   20.530150][  T273] RAX: 0000000000000000 RBX: ffff88800a7fa000 RCX: 0000000000000001
[   20.530655][  T273] RDX: 0000000000000000 RSI: ffffffff8809f52e RDI: ffffffff8785a5a0
[   20.531164][  T273] RBP: ffffc90000a36fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.531667][  T273] R10: ffffc90000a37010 R11: ffffffff885798a0 R12: 1ffff92000146de2
[   20.532164][  T273] R13: 00000000000005dc R14: ffffc90000a37010 R15: ffff88800a7faf08
[   20.532663][  T273] FS:  00007fa2a260b800(0000) GS:ffff8880ac0a7000(0000) knlGS:0000000000000000
[   20.533243][  T273] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.533683][  T273] CR2: 00000000004e5aa0 CR3: 00000000090fc001 CR4: 0000000000772ef0
[   20.534188][  T273] PKRU: 55555554
[   20.534453][  T273] Call Trace:
[   20.534711][  T273]  <TASK>
[ 20.534884][ T273] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.535220][ T273] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.535583][ T273] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.535924][ T273] netif_set_mtu (net/core/dev.c:9652) 
[ 20.536255][ T273] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.536605][ T273] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.536858][ T273] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.537338][ T273] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.537714][ T273] do_set_master (net/core/rtnetlink.c:2948) 
[ 20.538044][ T273] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.538388][ T273] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.538800][ T273] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.539126][ T273] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.539460][ T273] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.539802][ T273] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.540131][ T273] ? __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) 
[ 20.540464][ T273] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.540870][ T273] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.541205][ T273] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.541553][ T273] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.541887][ T273] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.542227][ T273] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.542564][ T273] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.542887][ T273] ? __create_object (mm/kmemleak.c:771) 
[ 20.543223][ T273] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.543567][ T273] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.543908][ T273] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.544325][ T273] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.544670][ T273] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.545001][ T273] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.545354][ T273] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.545687][ T273] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.546027][ T273] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.546357][ T273] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.546682][ T273] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.547005][ T273] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.547340][ T273] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.547670][ T273] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.548003][ T273] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.548346][ T273] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.548678][ T273] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.549014][ T273] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.549365][ T273] ? 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) 
[ 20.549695][ T273] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.550021][ T273] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.550361][ T273] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.550692][ T273] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.551023][ T273] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.551364][ T273] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 20.551695][ T273] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.552028][ T273] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.552369][ T273] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.552788][ T273] ___sys_sendmsg (net/socket.c:2670) 
[ 20.553111][ T273] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.553463][ T273] ? __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) 
[ 20.553866][ T273] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.554191][ T273] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.554539][ T273] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.554869][ T273] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.555191][ T273] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.555524][ T273] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.555869][ T273] __sys_sendmsg (net/socket.c:2700) 
[ 20.556192][ T273] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.556605][ T273] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.556973][ T273] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.557320][ T273] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.557658][ T273] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.558067][  T273] RIP: 0033:0x7fa2a27d81e7
[ 20.558455][ T273] 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)
[   20.559629][  T273] RSP: 002b:00007ffebbba2238 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.560127][  T273] RAX: ffffffffffffffda RBX: 00007ffebbba2970 RCX: 00007fa2a27d81e7
[   20.560640][  T273] RDX: 0000000000000000 RSI: 00007ffebbba22a0 RDI: 0000000000000005
[   20.561130][  T273] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   20.561907][  T273] R10: 000000001747e910 R11: 0000000000000246 R12: 0000000000000003
[   20.562409][  T273] R13: 00000000686e2990 R14: 0000000000499600 R15: 0000000000000000
| [   20.718051][  T274] ------------[ cut here ]------------
| [ 20.718413][ T274] WARNING: CPU: 0 PID: 274 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) 
| [   20.719055][  T274] Modules linked in: bridge stp llc veth
| [   20.720740][  T274] Tainted: [W]=WARN
[   20.720998][  T274] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.721419][ T274] 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) 
[ 20.721785][ T274] Code: 00 00 8b 05 87 1c 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 ca d1 79 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 87 1c 38 02    	mov    0x2381c87(%rip),%eax        # 0x2381c8f
   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 ca d1 79 00       	call   0x79d1eb
  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
[   20.722963][  T274] RSP: 0018:ffffc90000c06ef0 EFLAGS: 00010246
[   20.723384][  T274] RAX: 0000000000000000 RBX: ffff88800a7fa000 RCX: 0000000000000001
[   20.723869][  T274] RDX: 0000000000000000 RSI: ffffffff8809f52e RDI: ffffffff8785a5a0
[   20.724372][  T274] RBP: ffffc90000c06fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.724858][  T274] R10: ffffc90000c07010 R11: ffffffff88eb19b8 R12: 1ffff92000180de2
[   20.725355][  T274] R13: 00000000000005dc R14: ffffc90000c07010 R15: ffff88800a7faf08
[   20.725842][  T274] FS:  00007f0c57003800(0000) GS:ffff8880ac0a7000(0000) knlGS:0000000000000000
[   20.726419][  T274] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.726829][  T274] CR2: 00000000004e5aa8 CR3: 000000000621b003 CR4: 0000000000772ef0
[   20.727329][  T274] PKRU: 55555554
[   20.727575][  T274] Call Trace:
[   20.727818][  T274]  <TASK>
[ 20.727987][ T274] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.728323][ T274] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.728652][ T274] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.728974][ T274] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.729383][ T274] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.729724][ T274] netif_set_mtu (net/core/dev.c:9652) 
[ 20.730051][ T274] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.730394][ T274] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.730847][ T274] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.731095][ T274] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.731545][ T274] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.731918][ T274] do_set_master (net/core/rtnetlink.c:2948) 
[ 20.732256][ T274] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.732594][ T274] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.733005][ T274] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.733337][ T274] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.733661][ T274] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.733994][ T274] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.734343][ T274] ? __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) 
[ 20.734690][ T274] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.735090][ T274] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.735426][ T274] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.735758][ T274] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.736080][ T274] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.736417][ T274] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.736741][ T274] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.737064][ T274] ? __create_object (mm/kmemleak.c:771) 
[ 20.737398][ T274] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.737725][ T274] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.738048][ T274] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.738458][ T274] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.738791][ T274] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.739121][ T274] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.739454][ T274] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.739790][ T274] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.740118][ T274] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.740448][ T274] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.740773][ T274] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.741096][ T274] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.741430][ T274] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.741760][ T274] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.742088][ T274] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.742430][ T274] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.742757][ T274] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.743095][ T274] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.743431][ T274] ? 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) 
[ 20.743758][ T274] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.744086][ T274] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.744442][ T274] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.744774][ T274] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.745100][ T274] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.745433][ T274] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 20.745762][ T274] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.746087][ T274] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.746421][ T274] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.746839][ T274] ___sys_sendmsg (net/socket.c:2670) 
[ 20.747162][ T274] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.747498][ T274] ? __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) 
[ 20.747901][ T274] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.748227][ T274] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.748562][ T274] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.748900][ T274] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.749243][ T274] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.749587][ T274] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.749919][ T274] __sys_sendmsg (net/socket.c:2700) 
[ 20.750242][ T274] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.750659][ T274] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.750998][ T274] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.751339][ T274] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.751665][ T274] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.752070][  T274] RIP: 0033:0x7f0c571d01e7
[ 20.752415][ T274] 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)
[   20.753581][  T274] RSP: 002b:00007fff80222b98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.754073][  T274] RAX: ffffffffffffffda RBX: 00007fff802232d0 RCX: 00007f0c571d01e7
[   20.754583][  T274] RDX: 0000000000000000 RSI: 00007fff80222c00 RDI: 0000000000000005
[   20.755069][  T274] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   20.755563][  T274] R10: 0000000038cc3910 R11: 0000000000000246 R12: 0000000000000003


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