======================================
| xx__-> [   17.077544][  T266] ip (266) used greatest stack depth: 23552 bytes left
| [   19.226663][  T296] ------------[ cut here ]------------
| [ 19.227266][ T296] WARNING: CPU: 3 PID: 296 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) 
| [   19.228129][  T296] Modules linked in:
[   19.229104][  T296] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.229533][ T296] 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) 
[ 19.229884][ T296] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   19.231098][  T296] RSP: 0018:ffffc90000d07140 EFLAGS: 00010246
[   19.231559][  T296] RAX: 0000000000000000 RBX: ffff88800bfec000 RCX: 0000000000000001
[   19.232053][  T296] RDX: 0000000000000000 RSI: ffffffff93910759 RDI: ffffffff93058280
[   19.232657][  T296] RBP: ffffc90000d07228 R08: 0000000000000001 R09: fffff520001a0dde
[   19.233142][  T296] R10: ffffc90000d06ef7 R11: ffff88806cfb9118 R12: 1ffff920001a0e2c
[   19.233676][  T296] R13: 0000000000000578 R14: ffffc90000d07880 R15: ffff88800a796368
[   19.234150][  T296] FS:  00007f98f0eb8800(0000) GS:ffff8880d7119000(0000) knlGS:0000000000000000
[   19.234765][  T296] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.235223][  T296] CR2: 00007ffcf7d4c8c8 CR3: 0000000010144002 CR4: 0000000000772ef0
[   19.235855][  T296] PKRU: 55555554
[   19.236148][  T296] Call Trace:
[   19.236465][  T296]  <TASK>
[ 19.236678][ T296] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.237059][ T296] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.237444][ T296] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.237830][ T296] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 19.238207][ T296] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 19.238592][ T296] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 19.238903][ T296] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 19.239219][ T296] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.239676][ T296] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.240015][ T296] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.240343][ T296] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.240675][ T296] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.241001][ T296] ? __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) 
[ 19.241387][ T296] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.241796][ T296] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.242120][ T296] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.242442][ T296] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.242741][ T296] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.243028][ T296] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.243321][ T296] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.243602][ T296] ? __create_object (mm/kmemleak.c:771) 
[ 19.243901][ T296] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.244182][ T296] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.244473][ T296] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.244844][ T296] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.245148][ T296] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.245447][ T296] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.245727][ T296] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.246020][ T296] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.246320][ T296] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.246607][ T296] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.246894][ T296] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.247173][ T296] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.247474][ T296] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.247786][ T296] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.248068][ T296] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.248389][ T296] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.248688][ T296] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.249003][ T296] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.249318][ T296] ? 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) 
[ 19.249614][ T296] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.249916][ T296] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.250198][ T296] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.250507][ T296] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.250802][ T296] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.251125][ T296] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.251460][ T296] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.251804][ T296] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.252161][ T296] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.252675][ T296] ___sys_sendmsg (net/socket.c:2670) 
[ 19.253053][ T296] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.253440][ T296] ? __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) 
[ 19.253880][ T296] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.254247][ T296] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.254617][ T296] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.254970][ T296] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.255293][ T296] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.255724][ T296] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.256074][ T296] __sys_sendmsg (net/socket.c:2700) 
[ 19.256410][ T296] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.256789][ T296] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.257115][ T296] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.257448][ T296] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.257738][ T296] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.258144][  T296] RIP: 0033:0x7f98f10851e7
[ 19.258535][ T296] 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)
[   19.259643][  T296] RSP: 002b:00007ffcf7d4d568 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.260134][  T296] RAX: ffffffffffffffda RBX: 00007ffcf7d4dc90 RCX: 00007f98f10851e7
[   19.260707][  T296] RDX: 0000000000000000 RSI: 00007ffcf7d4d5d0 RDI: 0000000000000005
[   19.261271][  T296] RBP: 0000000000000006 R08: 0000000000000003 R09: 0000000000000078
[   19.261802][  T296] R10: 00007f98f0f82ee8 R11: 0000000000000246 R12: 0000000000000006
[   19.262348][  T296] R13: 00000000686e09f6 R14: 0000000000499600 R15: 0000000000000000
| [   22.038146][  T308] ------------[ cut here ]------------
| [ 22.038844][ T308] WARNING: CPU: 1 PID: 308 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) 
| [   22.039458][  T308] Modules linked in:
| [   22.040323][  T308] Tainted: [W]=WARN
[   22.040556][  T308] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.040944][ T308] 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) 
[ 22.041280][ T308] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   22.042432][  T308] RSP: 0018:ffffc90000db6ef0 EFLAGS: 00010246
[   22.042834][  T308] RAX: 0000000000000000 RBX: ffff88800bbea000 RCX: 0000000000000001
[   22.043294][  T308] RDX: 0000000000000000 RSI: ffffffff93910759 RDI: ffffffff93058280
[   22.043746][  T308] RBP: ffffc90000db6fd8 R08: 0000000000000000 R09: 0000000000000000
[   22.044196][  T308] R10: ffffc90000db7008 R11: ffffffff9438d1e0 R12: 1ffff920001b6de2
[   22.044692][  T308] R13: 00000000000005dc R14: ffffc90000db7008 R15: ffff88800bbeaf48
[   22.045142][  T308] FS:  00007ff8f513c800(0000) GS:ffff8880d7019000(0000) knlGS:0000000000000000
[   22.045690][  T308] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.046071][  T308] CR2: 00000000004e5eb0 CR3: 000000001140b002 CR4: 0000000000772ef0
[   22.046553][  T308] PKRU: 55555554
[   22.046792][  T308] Call Trace:
[   22.047018][  T308]  <TASK>
[ 22.047175][ T308] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.047523][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.047841][ T308] netif_set_mtu (net/core/dev.c:9652) 
[ 22.048245][ T308] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.048565][ T308] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.048791][ T308] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 22.049316][ T308] br_add_if (net/bridge/br_if.c:697) 
[ 22.049558][ T308] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.049859][ T308] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 22.050181][ T308] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 22.050518][ T308] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 22.050904][ T308] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 22.051204][ T308] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 22.051531][ T308] ? __kernel_text_address (kernel/extable.c:79) 
[ 22.051837][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.052141][ T308] ? __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) 
[ 22.052463][ T308] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 22.052838][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.053141][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.053486][ T308] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 22.053805][ T308] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 22.054111][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.054433][ T308] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.054735][ T308] ? __create_object (mm/kmemleak.c:771) 
[ 22.055033][ T308] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 22.055342][ T308] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 22.055643][ T308] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 22.056011][ T308] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 22.056340][ T308] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.056663][ T308] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.056961][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.057286][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.057587][ T308] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.057883][ T308] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.058185][ T308] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.058488][ T308] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.058802][ T308] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.059104][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.059434][ T308] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.059736][ T308] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.060036][ T308] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.060360][ T308] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.060670][ T308] ? 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) 
[ 22.060974][ T308] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 22.061291][ T308] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.061587][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.061894][ T308] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.062193][ T308] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.062539][ T308] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.062860][ T308] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.063166][ T308] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.063471][ T308] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.063854][ T308] ___sys_sendmsg (net/socket.c:2670) 
[ 22.064149][ T308] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.064455][ T308] ? __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) 
[ 22.064840][ T308] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.065141][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.065482][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.065790][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.066088][ T308] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.066393][ T308] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.066712][ T308] __sys_sendmsg (net/socket.c:2700) 
[ 22.067008][ T308] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.067389][ T308] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.067713][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.068015][ T308] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.068345][ T308] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.068735][  T308] RIP: 0033:0x7ff8f53091e7
[ 22.069042][ T308] 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)
[   22.070134][  T308] RSP: 002b:00007ffec143c3d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.070599][  T308] RAX: ffffffffffffffda RBX: 00007ffec143cb00 RCX: 00007ff8f53091e7
[   22.071070][  T308] RDX: 0000000000000000 RSI: 00007ffec143c440 RDI: 0000000000000005
[   22.071522][  T308] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   22.071974][  T308] R10: 0000000035f52910 R11: 0000000000000246 R12: 0000000000000003
[   22.072438][  T308] R13: 00000000686e09f9 R14: 0000000000499600 R15: 0000000000000000
| [   22.815124][  T310] ------------[ cut here ]------------
| [ 22.815774][ T310] WARNING: CPU: 2 PID: 310 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) 
| [   22.816418][  T310] Modules linked in: amt
| [   22.817531][  T310] Tainted: [W]=WARN
[   22.817777][  T310] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 22.818177][ T310] 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) 
[ 22.818523][ T310] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[   22.819823][  T310] RSP: 0018:ffffc90000dd7080 EFLAGS: 00010246
[   22.820260][  T310] RAX: 0000000000000000 RBX: ffff88800bbea000 RCX: 0000000000000001
[   22.820779][  T310] RDX: 0000000000000000 RSI: ffffffff93910759 RDI: ffffffff93058280
[   22.821292][  T310] RBP: ffffc90000dd7168 R08: 0000000000000000 R09: 0000000000000000
[   22.821801][  T310] R10: ffffc90000dd7198 R11: ffffffff9438d1e0 R12: 1ffff920001bae14
[   22.822336][  T310] R13: 00000000000005b4 R14: ffffc90000dd7198 R15: ffff88800bbeaf48
[   22.822840][  T310] FS:  00007f71e9097800(0000) GS:ffff8880d7099000(0000) knlGS:0000000000000000
[   22.823480][  T310] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   22.823970][  T310] CR2: 000055d8fa959004 CR3: 0000000010396005 CR4: 0000000000772ef0
[   22.824575][  T310] PKRU: 55555554
[   22.824873][  T310] Call Trace:
[   22.825122][  T310]  <TASK>
[ 22.825330][ T310] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 22.825667][ T310] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.826026][ T310] netif_set_mtu (net/core/dev.c:9652) 
[ 22.826384][ T310] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 22.826752][ T310] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 22.827005][ T310] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 22.827345][ T310] br_add_if (net/bridge/br_if.c:697) 
[ 22.827604][ T310] do_set_master (net/core/rtnetlink.c:2948) 
[ 22.827927][ T310] ? rtnl_configure_link (net/core/rtnetlink.c:3592) 
[ 22.828255][ T310] ? nla_strscpy (lib/nlattr.c:798) 
[ 22.828606][ T310] rtnl_newlink_create (net/core/rtnetlink.c:3840) 
[ 22.828959][ T310] ? __pfx_rtnl_newlink_create (net/core/rtnetlink.c:3791) 
[ 22.829305][ T310] ? __dev_get_by_name (net/core/dev.c:865) 
[ 22.829640][ T310] ? rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 22.829971][ T310] ? __pfx_rtnl_dev_get (net/core/rtnetlink.c:3404) 
[ 22.830334][ T310] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 22.830672][ T310] ? reacquire_held_locks (kernel/locking/lockdep.c:5388) 
[ 22.831022][ T310] __rtnl_newlink (net/core/rtnetlink.c:3942) 
[ 22.831394][ T310] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 22.831720][ T310] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.832053][ T310] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 22.832394][ T310] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.832724][ T310] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 22.833062][ T310] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 22.833446][ T310] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.833812][ T310] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.834197][ T310] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 22.834539][ T310] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 22.834882][ T310] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 22.835216][ T310] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 22.835554][ T310] ? 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) 
[ 22.835880][ T310] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 22.836205][ T310] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 22.836544][ T310] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.836871][ T310] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 22.837194][ T310] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 22.837639][ T310] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 22.838063][ T310] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 22.838435][ T310] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 22.838764][ T310] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 22.839182][ T310] ___sys_sendmsg (net/socket.c:2670) 
[ 22.839515][ T310] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 22.839848][ T310] ? __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) 
[ 22.840332][ T310] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 22.840661][ T310] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.840989][ T310] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 22.841335][ T310] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 22.841657][ T310] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 22.841985][ T310] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 22.842374][ T310] __sys_sendmsg (net/socket.c:2700) 
[ 22.842774][ T310] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 22.843294][ T310] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 22.843672][ T310] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 22.844013][ T310] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 22.844365][ T310] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   22.844793][  T310] RIP: 0033:0x7f71e92641e7
[ 22.845142][ T310] Code: Unable to access opcode bytes at 0x7f71e92641bd.

Code starting with the faulting instruction
===========================================
[   22.845610][  T310] RSP: 002b:00007fff3d938a28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   22.846131][  T310] RAX: ffffffffffffffda RBX: 00007fff3d939150 RCX: 00007f71e92641e7
[   22.846659][  T310] RDX: 0000000000000000 RSI: 00007fff3d938a90 RDI: 0000000000000005
[   22.847213][  T310] RBP: 000000000000000c R08: 0000000000000074 R09: 0000000000000000
[   22.847837][  T310] R10: 00007f71e92f2ac0 R11: 0000000000000246 R12: 00007fff3d939178
[   22.848402][  T310] R13: 00000000686e09f9 R14: 0000000000499600 R15: 00007fff3d938b80
| [ 1911.497779][   T69] ------------[ cut here ]------------
| [ 1911.498111][ T69] WARNING: CPU: 1 PID: 69 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) 
| [ 1911.498899][   T69] Modules linked in: xt_HL nft_compat nf_tables amt
| [ 1911.500095][   T69] Tainted: [W]=WARN
[ 1911.500483][   T69] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 1911.500868][   T69] Workqueue: netns cleanup_net
[ 1911.501194][ T69] 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) 
[ 1911.501646][ T69] Code: 00 00 8b 05 97 05 bc 02 85 c0 0f 84 52 fe ff ff 48 8d bb c0 0c 00 00 be ff ff ff ff e8 fa fd 9b 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 97 05 bc 02    	mov    0x2bc0597(%rip),%eax        # 0x2bc059f
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb c0 0c 00 00 	lea    0xcc0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa fd 9b 00       	call   0x9bfe1b
  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
[ 1911.502876][   T69] RSP: 0018:ffffc900004a75b0 EFLAGS: 00010246
[ 1911.503408][   T69] RAX: 0000000000000000 RBX: ffff88800bbea000 RCX: 0000000000000001
[ 1911.503864][   T69] RDX: 0000000000000000 RSI: ffffffff93910759 RDI: ffffffff93058280
[ 1911.504452][   T69] RBP: ffffc900004a7698 R08: 0000000000000000 R09: 0000000000000000
[ 1911.504924][   T69] R10: ffffc900004a76c8 R11: ffffffff9029be78 R12: 1ffff92000094eba
[ 1911.505392][   T69] R13: 00000000000005b4 R14: ffffc900004a76c8 R15: ffff88800bbeaf48
[ 1911.505867][   T69] FS:  0000000000000000(0000) GS:ffff8880d7019000(0000) knlGS:0000000000000000
[ 1911.506411][   T69] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1911.506800][   T69] CR2: 00007f2517980000 CR3: 000000003974a006 CR4: 0000000000772ef0
[ 1911.507278][   T69] PKRU: 55555554
[ 1911.507510][   T69] Call Trace:
[ 1911.507739][   T69]  <TASK>
[ 1911.507895][ T69] ? __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) 
[ 1911.508300][ T69] ? br_del_if (net/bridge/br_if.c:742) 
[ 1911.508542][ T69] ? br_device_event (net/bridge/br.c:141) 
[ 1911.508844][ T69] ? notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 1911.509157][ T69] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 1911.509466][ T69] ? cleanup_net (net/core/net_namespace.c:684) 
[ 1911.509767][ T69] ? process_one_work (kernel/workqueue.c:3238) 
[ 1911.510069][ T69] ? worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 1911.510376][ T69] ? kthread (kernel/kthread.c:464) 
[ 1911.510608][ T69] ? ret_from_fork (arch/x86/kernel/process.c:148) 
[ 1911.510915][ T69] ? ret_from_fork_asm (arch/x86/entry/entry_64.S:258) 
[ 1911.511227][ T69] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 1911.511575][ T69] netif_set_mtu (net/core/dev.c:9652) 
[ 1911.511883][ T69] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 1911.512214][ T69] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 1911.512459][ T69] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 1911.512766][ T69] br_del_if (net/bridge/br_if.c:743) 
[ 1911.512999][ T69] br_device_event (net/bridge/br.c:141) 
[ 1911.513312][ T69] ? __pfx_br_device_event (net/bridge/br.c:29) 
[ 1911.513628][ T69] notifier_call_chain (kernel/notifier.c:85 (discriminator 2)) 
[ 1911.513942][ T69] unregister_netdevice_many_notify (net/core/dev.c:12107) 
[ 1911.514347][ T69] ? mutex_is_locked (./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.h:47 kernel/locking/mutex.c:67) 
[ 1911.514664][ T69] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:12032) 
[ 1911.515047][ T69] ? unregister_netdevice_queue (net/core/dev.c:12004) 
[ 1911.515442][ T69] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 1911.515821][ T69] ? __pfx_unregister_netdevice_queue (net/core/dev.c:12003) 
[ 1911.516211][ T69] default_device_exit_batch (net/core/dev.c:12673) 
[ 1911.516530][ T69] ? __pfx_default_device_exit_batch (net/core/dev.c:12648) 
[ 1911.516927][ T69] ops_undo_list (net/core/net_namespace.c:204 net/core/net_namespace.c:251) 
[ 1911.517249][ T69] ? __pfx_ops_undo_list (net/core/net_namespace.c:222) 
[ 1911.517556][ T69] ? cleanup_net (./include/linux/list.h:183 net/core/net_namespace.c:679) 
[ 1911.517874][ T69] cleanup_net (net/core/net_namespace.c:684) 
[ 1911.518181][ T69] ? __pfx_cleanup_net (net/core/net_namespace.c:648) 
[ 1911.518494][ T69] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1911.518813][ T69] process_one_work (kernel/workqueue.c:3238) 
[ 1911.519126][ T69] ? __pfx_process_one_work (kernel/workqueue.c:3140) 
[ 1911.519453][ T69] ? assign_work (kernel/workqueue.c:1200) 
[ 1911.519760][ T69] worker_thread (kernel/workqueue.c:3315 kernel/workqueue.c:3402) 
[ 1911.520079][ T69] ? __pfx_worker_thread (kernel/workqueue.c:3348) 
[ 1911.520399][ T69] kthread (kernel/kthread.c:464) 
[ 1911.520632][ T69] ? __pfx_kthread (kernel/kthread.c:413) 
[ 1911.520932][ T69] ? ret_from_fork (arch/x86/kernel/process.c:147) 
[ 1911.521232][ T69] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 1911.521549][ T69] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 1911.521858][ T69] ? __pfx_kthread (kernel/kthread.c:413) 
[ 1911.522168][ T69] ret_from_fork (arch/x86/kernel/process.c:148) 
[ 1911.522479][ T69] ? __pfx_kthread (kernel/kthread.c:413) 


Finger prints:
netif_set_mtu_ext:rtnl_newlink:rtnetlink_rcv_msg:netlink_rcv_skb:netlink_unicast
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_del_if
netif_set_mtu_ext:netif_set_mtu:dev_set_mtu:br_mtu_auto_adjust:br_add_if