======================================
| [   20.458548][  T319] veth1: entered promiscuous mode
| [   20.460864][  T319] ------------[ cut here ]------------
| [ 20.461372][ T319] WARNING: CPU: 1 PID: 319 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) 
| [   20.462018][  T319] Modules linked in: bridge stp llc sch_ingress vrf veth
[   20.463096][  T319] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.463508][ T319] 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) 
[ 20.463847][ T319] 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
[   20.465020][  T319] RSP: 0018:ffffc900004d6ef0 EFLAGS: 00010246
[   20.465437][  T319] RAX: 0000000000000000 RBX: ffff88800d37a000 RCX: 0000000000000001
[   20.465930][  T319] RDX: 0000000000000000 RSI: ffffffffb569b941 RDI: ffffffffb4e555e0
[   20.466430][  T319] RBP: ffffc900004d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.467086][  T319] R10: ffffc900004d7010 R11: ffffffffb64a8918 R12: 1ffff9200009ade2
[   20.467612][  T319] R13: 00000000000005dc R14: ffffc900004d7010 R15: ffff88800d37af08
[   20.468106][  T319] FS:  00007ff41799a800(0000) GS:ffff888077d37000(0000) knlGS:0000000000000000
[   20.468710][  T319] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.469131][  T319] CR2: 00000000004e5aa8 CR3: 000000000e4e7001 CR4: 0000000000772ef0
[   20.469630][  T319] PKRU: 55555554
[   20.469927][  T319] Call Trace:
[   20.470185][  T319]  <TASK>
[ 20.470366][ T319] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.470695][ T319] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.471033][ T319] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.471369][ T319] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.471770][ T319] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.472102][ T319] netif_set_mtu (net/core/dev.c:9652) 
[ 20.472460][ T319] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.472793][ T319] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.473251][ T319] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.473495][ T319] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.473943][ T319] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.474323][ T319] do_set_master (net/core/rtnetlink.c:2948) 
[ 20.474667][ T319] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.475000][ T319] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.475422][ T319] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.475754][ T319] ? irqentry_exit (kernel/entry/common.c:311) 
[ 20.476078][ T319] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.476442][ T319] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3189 kernel/locking/mutex.c:91) 
[ 20.476773][ T319] ? __mutex_trylock_common (kernel/locking/mutex.c:109) 
[ 20.477107][ T319] ? __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) 
[ 20.477441][ T319] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.477845][ T319] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.478191][ T319] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.478518][ T319] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.478836][ T319] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.479176][ T319] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.479509][ T319] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.479853][ T319] ? __create_object (mm/kmemleak.c:771) 
[ 20.480207][ T319] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.480537][ T319] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.480872][ T319] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.481287][ T319] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.481615][ T319] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.481938][ T319] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.482274][ T319] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.482600][ T319] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.482919][ T319] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.483247][ T319] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.483569][ T319] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.483887][ T319] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.484217][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.484549][ T319] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.484877][ T319] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.485211][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.485533][ T319] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.485861][ T319] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.486188][ T319] ? 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) 
[ 20.486515][ T319] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.486844][ T319] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.487177][ T319] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.487504][ T319] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.487828][ T319] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.488174][ T319] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.488505][ T319] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.488832][ T319] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.489163][ T319] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.489577][ T319] ___sys_sendmsg (net/socket.c:2670) 
[ 20.489916][ T319] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.490257][ T319] ? __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) 
[ 20.490669][ T319] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.490999][ T319] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.491344][ T319] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.491677][ T319] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.492012][ T319] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.492357][ T319] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.492691][ T319] __sys_sendmsg (net/socket.c:2700) 
[ 20.493014][ T319] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.493427][ T319] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.493761][ T319] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.494085][ T319] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.494421][ T319] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.494818][  T319] RIP: 0033:0x7ff417b671e7
[ 20.495162][ T319] 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)
[   20.496336][  T319] RSP: 002b:00007fff16fdeb28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.496827][  T319] RAX: ffffffffffffffda RBX: 00007fff16fdf250 RCX: 00007ff417b671e7
[   20.497336][  T319] RDX: 0000000000000000 RSI: 00007fff16fdeb90 RDI: 0000000000000005
[   20.497851][  T319] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.498343][  T319] R10: 00000000327dd910 R11: 0000000000000246 R12: 0000000000000004
[   20.498853][  T319] R13: 00000000686e3cd7 R14: 0000000000499600 R15: 0000000000000000
| [   20.744687][  T321] ------------[ cut here ]------------
| [ 20.745042][ T321] WARNING: CPU: 2 PID: 321 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) 
| [   20.745740][  T321] Modules linked in: bridge stp llc sch_ingress vrf veth
| [   20.747684][  T321] Tainted: [W]=WARN
[   20.747947][  T321] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.748367][ T321] 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) 
[ 20.748719][ T321] 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
[   20.749902][  T321] RSP: 0018:ffffc900005a6ef0 EFLAGS: 00010246
[   20.750310][  T321] RAX: 0000000000000000 RBX: ffff88800d37a000 RCX: 0000000000000001
[   20.750782][  T321] RDX: 0000000000000000 RSI: ffffffffb569b941 RDI: ffffffffb4e555e0
[   20.751257][  T321] RBP: ffffc900005a6fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.751727][  T321] R10: ffffc900005a7010 R11: ffffffffb64a8918 R12: 1ffff920000b4de2
[   20.752208][  T321] R13: 00000000000005dc R14: ffffc900005a7010 R15: ffff88800d37af08
[   20.752675][  T321] FS:  00007fe007d86800(0000) GS:ffff888077db7000(0000) knlGS:0000000000000000
[   20.753251][  T321] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.753658][  T321] CR2: 00000000004e5ab0 CR3: 000000000e4d8001 CR4: 0000000000772ef0
[   20.754188][  T321] PKRU: 55555554
[   20.754437][  T321] Call Trace:
[   20.754678][  T321]  <TASK>
[ 20.754853][ T321] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.755189][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.755513][ T321] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.755832][ T321] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.756237][ T321] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.756559][ T321] netif_set_mtu (net/core/dev.c:9652) 
[ 20.756876][ T321] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.757228][ T321] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.757682][ T321] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.757928][ T321] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.758374][ T321] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.758740][ T321] do_set_master (net/core/rtnetlink.c:2948) 
[ 20.759062][ T321] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.759395][ T321] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.759819][ T321] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.760144][ T321] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.760476][ T321] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.760798][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.761121][ T321] ? __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) 
[ 20.761472][ T321] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.761873][ T321] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.762205][ T321] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.762533][ T321] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.762854][ T321] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.763193][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.763516][ T321] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.763833][ T321] ? __create_object (mm/kmemleak.c:771) 
[ 20.764168][ T321] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.764489][ T321] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.764812][ T321] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.765229][ T321] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.765593][ T321] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.765915][ T321] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.766248][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.766573][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.766894][ T321] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.767224][ T321] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.767553][ T321] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.767873][ T321] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.768210][ T321] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.768532][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.768856][ T321] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.769207][ T321] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.769532][ T321] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.769958][ T321] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.770325][ T321] ? 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) 
[ 20.770650][ T321] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.770981][ T321] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.771315][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.771646][ T321] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.771967][ T321] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.772302][ T321] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.772627][ T321] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.772952][ T321] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.773297][ T321] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.773704][ T321] ___sys_sendmsg (net/socket.c:2670) 
[ 20.774019][ T321] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.774350][ T321] ? __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) 
[ 20.774750][ T321] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.775076][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.775415][ T321] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.775746][ T321] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.776063][ T321] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.776396][ T321] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.776723][ T321] __sys_sendmsg (net/socket.c:2700) 
[ 20.777040][ T321] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.777461][ T321] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.777795][ T321] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.778115][ T321] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.778446][ T321] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.778836][  T321] RIP: 0033:0x7fe007f531e7
[ 20.779178][ T321] 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)
[   20.780331][  T321] RSP: 002b:00007ffe4813e9f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.780809][  T321] RAX: ffffffffffffffda RBX: 00007ffe4813f120 RCX: 00007fe007f531e7
[   20.781308][  T321] RDX: 0000000000000000 RSI: 00007ffe4813ea60 RDI: 0000000000000005
[   20.781786][  T321] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.782267][  T321] R10: 0000000032501910 R11: 0000000000000246 R12: 0000000000000004


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