======================================
| [   15.080670][  T296] br: port 1(d1) entered forwarding state
| [   15.082253][  T296] ------------[ cut here ]------------
| [ 15.083494][ T296] WARNING: CPU: 2 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) 
| [   15.084318][  T296] Modules linked in:
[   15.085620][  T296] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 15.086178][ 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) 
[ 15.086742][ 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
[   15.088421][  T296] RSP: 0018:ffffc90000c46ef0 EFLAGS: 00010246
[   15.089130][  T296] RAX: 0000000000000000 RBX: ffff888005562000 RCX: 0000000000000001
[   15.090075][  T296] RDX: 0000000000000000 RSI: ffffffffa2110759 RDI: ffffffffa1858280
[   15.090916][  T296] RBP: ffffc90000c46fd8 R08: 0000000000000000 R09: 0000000000000000
[   15.091700][  T296] R10: ffffc90000c47008 R11: ffffffffa34ceab8 R12: 1ffff92000188de2
[   15.092488][  T296] R13: 00000000000005dc R14: ffffc90000c47008 R15: ffff888005562f48
[   15.093278][  T296] FS:  00007fdd888cf800(0000) GS:ffff8880c8899000(0000) knlGS:0000000000000000
[   15.094008][  T296] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   15.094650][  T296] CR2: 00000000004e6e08 CR3: 000000000ba6a001 CR4: 0000000000772ef0
[   15.095508][  T296] PKRU: 55555554
[   15.095953][  T296] Call Trace:
[   15.096364][  T296]  <TASK>
[ 15.096675][ T296] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 15.097119][ T296] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 15.097685][ T296] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 15.098375][ T296] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 15.098974][ T296] netif_set_mtu (net/core/dev.c:9652) 
[ 15.099545][ T296] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 15.100248][ T296] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 15.100947][ T296] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 15.101394][ T296] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 15.102141][ T296] br_add_if (net/bridge/br_if.c:697) 
[ 15.102655][ T296] do_set_master (net/core/rtnetlink.c:2948) 
[ 15.103146][ T296] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 15.103713][ T296] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 15.104346][ T296] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 15.105053][ T296] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 15.105656][ T296] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 15.106220][ T296] ? __kernel_text_address (kernel/extable.c:79) 
[ 15.106829][ T296] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.107399][ 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) 
[ 15.107891][ T296] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 15.108561][ T296] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.108984][ T296] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.109571][ T296] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 15.110122][ T296] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 15.110785][ T296] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.111242][ T296] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 15.111736][ T296] ? __create_object (mm/kmemleak.c:771) 
[ 15.112183][ T296] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 15.112670][ T296] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 15.113176][ T296] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 15.113789][ T296] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 15.114253][ T296] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 15.114715][ T296] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 15.115192][ T296] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.115693][ T296] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.116084][ T296] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 15.116580][ T296] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.117044][ T296] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 15.117632][ T296] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 15.118222][ T296] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 15.118799][ T296] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.119360][ T296] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 15.119866][ T296] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 15.120390][ T296] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 15.120968][ T296] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 15.121533][ 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) 
[ 15.122038][ T296] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 15.122674][ T296] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 15.123144][ T296] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.123652][ T296] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 15.124161][ T296] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 15.124670][ T296] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 15.125126][ T296] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 15.125749][ T296] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 15.126249][ T296] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 15.127049][ T296] ___sys_sendmsg (net/socket.c:2670) 
[ 15.127761][ T296] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 15.128281][ 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) 
[ 15.128969][ T296] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 15.129461][ T296] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.130001][ T296] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 15.130611][ T296] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 15.131199][ 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) 
[ 15.131697][ T296] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 15.132205][ T296] __sys_sendmsg (net/socket.c:2700) 
[ 15.132669][ T296] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 15.133307][ T296] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 15.133822][ T296] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 15.134378][ T296] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 15.134938][ T296] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   15.135619][  T296] RIP: 0033:0x7fdd88a9c1e7
[ 15.136224][ 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)
[   15.137971][  T296] RSP: 002b:00007ffee8e3cb18 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   15.138742][  T296] RAX: ffffffffffffffda RBX: 00007ffee8e3d240 RCX: 00007fdd88a9c1e7
[   15.139452][  T296] RDX: 0000000000000000 RSI: 00007ffee8e3cb80 RDI: 0000000000000005
[   15.140118][  T296] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   15.140817][  T296] R10: 0000000003615910 R11: 0000000000000246 R12: 0000000000000004
[   15.141594][  T296] R13: 00000000686e5655 R14: 0000000000499600 R15: 0000000000000000
| [   16.589357][  T324] ------------[ cut here ]------------
| [ 16.589680][ T324] WARNING: CPU: 1 PID: 324 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) 
| [   16.590296][  T324] Modules linked in:
| [   16.591157][  T324] Tainted: [W]=WARN
[   16.591390][  T324] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 16.591772][ T324] 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) 
[ 16.592083][ T324] 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
[   16.593142][  T324] RSP: 0018:ffffc90000cf6ef0 EFLAGS: 00010246
[   16.593551][  T324] RAX: 0000000000000000 RBX: ffff888005562000 RCX: 0000000000000001
[   16.594007][  T324] RDX: 0000000000000000 RSI: ffffffffa2110759 RDI: ffffffffa1858280
[   16.594461][  T324] RBP: ffffc90000cf6fd8 R08: 0000000000000000 R09: 0000000000000000
[   16.596415][  T324] R10: ffffc90000cf7008 R11: ffffffffa34ceab8 R12: 1ffff9200019ede2
[   16.597007][  T324] R13: 00000000000005dc R14: ffffc90000cf7008 R15: ffff888005562f48
[   16.597450][  T324] FS:  00007fd3226bb800(0000) GS:ffff8880c8819000(0000) knlGS:0000000000000000
[   16.598108][  T324] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   16.598481][  T324] CR2: 00000000004e6e08 CR3: 000000000c28f004 CR4: 0000000000772ef0
[   16.599064][  T324] PKRU: 55555554
[   16.599287][  T324] Call Trace:
[   16.599506][  T324]  <TASK>
[ 16.599670][ T324] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 16.599978][ T324] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 16.600295][ T324] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 16.600686][ T324] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 16.600987][ T324] netif_set_mtu (net/core/dev.c:9652) 
[ 16.601285][ T324] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 16.601599][ T324] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 16.601980][ T324] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 16.602204][ T324] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 16.602500][ T324] br_add_if (net/bridge/br_if.c:697) 
[ 16.602745][ T324] do_set_master (net/core/rtnetlink.c:2948) 
[ 16.603038][ T324] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 16.603345][ T324] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 16.603671][ T324] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 16.604044][ T324] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 16.604341][ T324] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 16.604657][ T324] ? __kernel_text_address (kernel/extable.c:79) 
[ 16.604955][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.605254][ T324] ? __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) 
[ 16.605559][ T324] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 16.605923][ T324] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.606220][ T324] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.606513][ T324] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 16.606827][ T324] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 16.607126][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.607420][ T324] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 16.607718][ T324] ? __create_object (mm/kmemleak.c:771) 
[ 16.608022][ T324] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 16.608315][ T324] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 16.608633][ T324] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 16.609004][ T324] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 16.609306][ T324] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 16.609772][ T324] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 16.610068][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.610368][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.610670][ T324] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 16.610961][ T324] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.611258][ T324] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 16.611556][ T324] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 16.611853][ T324] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 16.612155][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.612455][ T324] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 16.612764][ T324] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 16.613069][ T324] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 16.613374][ T324] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 16.613676][ T324] ? 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) 
[ 16.613973][ T324] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 16.614275][ T324] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 16.614587][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.614907][ T324] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 16.615212][ T324] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 16.615507][ T324] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 16.615830][ T324] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 16.616133][ T324] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 16.616429][ T324] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 16.616819][ T324] ___sys_sendmsg (net/socket.c:2670) 
[ 16.617118][ T324] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 16.617417][ T324] ? __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) 
[ 16.617797][ T324] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 16.618099][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.618398][ T324] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 16.618708][ T324] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 16.619004][ T324] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 16.619306][ T324] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 16.619614][ T324] __sys_sendmsg (net/socket.c:2700) 
[ 16.619909][ T324] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 16.620276][ T324] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 16.620591][ T324] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 16.620898][ T324] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 16.621196][ T324] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   16.621574][  T324] RIP: 0033:0x7fd3228881e7
[ 16.621885][ T324] 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)
[   16.622943][  T324] RSP: 002b:00007ffd36ddb0e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   16.623394][  T324] RAX: ffffffffffffffda RBX: 00007ffd36ddb810 RCX: 00007fd3228881e7
[   16.623842][  T324] RDX: 0000000000000000 RSI: 00007ffd36ddb150 RDI: 0000000000000005
[   16.624294][  T324] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   16.624751][  T324] R10: 0000000016695910 R11: 0000000000000246 R12: 0000000000000004
[   16.625196][  T324] R13: 00000000686e5657 R14: 0000000000499600 R15: 0000000000000000
| [   17.601377][  T352] ------------[ cut here ]------------
| [ 17.601679][ T352] WARNING: CPU: 1 PID: 352 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) 
| [   17.602258][  T352] Modules linked in:
| [   17.603097][  T352] Tainted: [W]=WARN
[   17.603320][  T352] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 17.603732][ T352] 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) 
[ 17.604045][ T352] 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
[   17.605117][  T352] RSP: 0018:ffffc90000d76ef0 EFLAGS: 00010246
[   17.605497][  T352] RAX: 0000000000000000 RBX: ffff888005562000 RCX: 0000000000000001
[   17.605953][  T352] RDX: 0000000000000000 RSI: ffffffffa2110759 RDI: ffffffffa1858280
[   17.606395][  T352] RBP: ffffc90000d76fd8 R08: 0000000000000000 R09: 0000000000000000
[   17.606841][  T352] R10: ffffc90000d77008 R11: ffffffffa34ceab8 R12: 1ffff920001aede2
[   17.607283][  T352] R13: 00000000000005dc R14: ffffc90000d77008 R15: ffff888005562f48
[   17.607730][  T352] FS:  00007fa0db376800(0000) GS:ffff8880c8819000(0000) knlGS:0000000000000000
[   17.608243][  T352] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   17.608769][  T352] CR2: 00000000004e6e08 CR3: 000000000bc51001 CR4: 0000000000772ef0
[   17.609219][  T352] PKRU: 55555554
[   17.609438][  T352] Call Trace:
[   17.609797][  T352]  <TASK>
[ 17.609951][ T352] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 17.610248][ T352] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 17.610590][ T352] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 17.610959][ T352] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 17.611257][ T352] netif_set_mtu (net/core/dev.c:9652) 
[ 17.611563][ T352] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 17.611868][ T352] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) 
[ 17.612238][ T352] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 17.612462][ T352] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 17.612770][ T352] br_add_if (net/bridge/br_if.c:697) 
[ 17.613016][ T352] do_set_master (net/core/rtnetlink.c:2948) 
[ 17.613312][ T352] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 17.613618][ T352] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 17.613916][ T352] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 17.614292][ T352] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 17.614600][ T352] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 17.614894][ T352] ? __kernel_text_address (kernel/extable.c:79) 
[ 17.615193][ T352] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.615490][ T352] ? __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) 
[ 17.615793][ T352] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 17.616160][ T352] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.616455][ T352] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.616758][ T352] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 17.617054][ T352] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 17.617350][ T352] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.617652][ T352] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 17.617942][ T352] ? __create_object (mm/kmemleak.c:771) 
[ 17.618245][ T352] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 17.618565][ T352] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 17.618862][ T352] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 17.619227][ T352] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 17.619539][ T352] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 17.619838][ T352] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 17.620142][ T352] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.620441][ T352] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.620744][ T352] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 17.621044][ T352] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.621339][ T352] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 17.621638][ T352] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 17.621934][ T352] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 17.622235][ T352] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.622543][ T352] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 17.622838][ T352] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 17.623134][ T352] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 17.623438][ T352] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 17.623737][ T352] ? 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) 
[ 17.624036][ T352] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 17.624335][ T352] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 17.624643][ T352] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.624944][ T352] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 17.625241][ T352] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 17.625543][ T352] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 17.625841][ T352] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 17.626136][ T352] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 17.626426][ T352] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 17.626816][ T352] ___sys_sendmsg (net/socket.c:2670) 
[ 17.627111][ T352] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 17.627401][ T352] ? __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) 
[ 17.627772][ T352] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 17.628073][ T352] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.628369][ T352] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 17.628676][ T352] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 17.628982][ T352] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 17.629274][ T352] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 17.629581][ T352] __sys_sendmsg (net/socket.c:2700) 
[ 17.629873][ T352] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 17.630237][ T352] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 17.630554][ T352] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 17.630851][ T352] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 17.631174][ T352] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   17.631547][  T352] RIP: 0033:0x7fa0db5431e7
[ 17.631852][ T352] 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)
[   17.632912][  T352] RSP: 002b:00007ffdf13de288 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   17.633365][  T352] RAX: ffffffffffffffda RBX: 00007ffdf13de9b0 RCX: 00007fa0db5431e7
[   17.633810][  T352] RDX: 0000000000000000 RSI: 00007ffdf13de2f0 RDI: 0000000000000005
[   17.634250][  T352] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   17.634706][  T352] R10: 000000001420f910 R11: 0000000000000246 R12: 0000000000000004
[   17.635152][  T352] R13: 00000000686e5658 R14: 0000000000499600 R15: 0000000000000000
| [   99.566596][ T2549] ------------[ cut here ]------------
| [ 99.566928][ T2549] WARNING: CPU: 2 PID: 2549 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) 
| [   99.567562][ T2549] Modules linked in:
| [   99.568424][ T2549] Tainted: [W]=WARN
[   99.568684][ T2549] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 99.569072][ T2549] 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) 
[ 99.569390][ T2549] 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
[   99.571556][ T2549] RSP: 0018:ffffc90003fe6f60 EFLAGS: 00010246
[   99.572047][ T2549] RAX: 0000000000000000 RBX: ffff888005562000 RCX: 0000000000000001
[   99.572501][ T2549] RDX: 0000000000000000 RSI: ffffffffa2110759 RDI: ffffffffa1858280
[   99.572978][ T2549] RBP: ffffc90003fe7050 R08: 0000000000000000 R09: 0000000000000000
[   99.573432][ T2549] R10: ffffc90003fe7080 R11: ffffffff9e200130 R12: 1ffff920007fcdf0
[   99.573900][ T2549] R13: 00000000000005dc R14: ffffc90003fe7080 R15: ffff888005562f48
[   99.574348][ T2549] FS:  00007f683c24b800(0000) GS:ffff8880c8899000(0000) knlGS:0000000000000000
[   99.574891][ T2549] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   99.575276][ T2549] CR2: 00000000004e6e20 CR3: 0000000011395006 CR4: 0000000000772ef0
[   99.575740][ T2549] PKRU: 55555554
[   99.575974][ T2549] Call Trace:
[   99.576203][ T2549]  <TASK>
[ 99.576366][ T2549] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 99.576712][ T2549] ? __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) 
[ 99.577100][ T2549] ? br_del_if (net/bridge/br_if.c:742) 
[ 99.577342][ T2549] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 99.577662][ T2549] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 99.577965][ T2549] ? netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 99.578279][ T2549] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 99.578593][ T2549] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 99.578898][ T2549] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 99.579209][ T2549] ? ___sys_sendmsg (net/socket.c:2670) 
[ 99.579513][ T2549] ? __sys_sendmsg (net/socket.c:2700) 
[ 99.579829][ T2549] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 99.580143][ T2549] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 99.580546][ T2549] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 99.580878][ T2549] netif_set_mtu (net/core/dev.c:9652) 
[ 99.581186][ T2549] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 99.581509][ T2549] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 99.581764][ T2549] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 99.582075][ T2549] br_del_if (net/bridge/br_if.c:743) 
[ 99.582310][ T2549] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 99.582626][ T2549] do_set_master (net/core/rtnetlink.c:2932) 
[ 99.582930][ T2549] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 99.583247][ T2549] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 99.583568][ T2549] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 99.583954][ T2549] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 99.584265][ T2549] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 99.584594][ T2549] ? __kernel_text_address (kernel/extable.c:79) 
[ 99.584921][ T2549] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 99.585233][ T2549] ? __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) 
[ 99.585554][ T2549] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 99.585929][ T2549] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 99.586240][ T2549] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 99.586553][ T2549] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 99.586863][ T2549] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 99.587177][ T2549] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 99.587486][ T2549] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 99.587799][ T2549] ? __create_object (mm/kmemleak.c:771) 
[ 99.588113][ T2549] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 99.588419][ T2549] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 99.588757][ T2549] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 99.589145][ T2549] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 99.589458][ T2549] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 99.589783][ T2549] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 99.590091][ T2549] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 99.590403][ T2549] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 99.590723][ T2549] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 99.591028][ T2549] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 99.591342][ T2549] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 99.591667][ T2549] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 99.591977][ T2549] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 99.592289][ T2549] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 99.592618][ T2549] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 99.592933][ T2549] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 99.593241][ T2549] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 99.593585][ T2549] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 99.593895][ T2549] ? 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) 
[ 99.594207][ T2549] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 99.594514][ T2549] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 99.594836][ T2549] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 99.595148][ T2549] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 99.595460][ T2549] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 99.595775][ T2549] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 99.596100][ T2549] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 99.596411][ T2549] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 99.596735][ T2549] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 99.597132][ T2549] ___sys_sendmsg (net/socket.c:2670) 
[ 99.597437][ T2549] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 99.597755][ T2549] ? __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) 
[ 99.598136][ T2549] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 99.598451][ T2549] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 99.598772][ T2549] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 99.599086][ T2549] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 99.599394][ T2549] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 99.599714][ T2549] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 99.600027][ T2549] __sys_sendmsg (net/socket.c:2700) 
[ 99.600331][ T2549] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 99.600723][ T2549] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 99.601049][ T2549] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 99.601360][ T2549] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 99.601682][ T2549] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   99.602059][ T2549] RIP: 0033:0x7f683c4181e7
[ 99.602380][ T2549] 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)
[   99.603453][ T2549] RSP: 002b:00007fff00f0d3a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   99.603917][ T2549] RAX: ffffffffffffffda RBX: 00007fff00f0dad0 RCX: 00007f683c4181e7
[   99.604367][ T2549] RDX: 0000000000000000 RSI: 00007fff00f0d410 RDI: 0000000000000005
[   99.604846][ T2549] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   99.605302][ T2549] R10: 00007f683c315ee8 R11: 0000000000000246 R12: 0000000000000003
[   99.605775][ T2549] R13: 00000000686e56aa R14: 0000000000499600 R15: 0000000000000000
| [  100.296516][ T2557] ------------[ cut here ]------------
| [ 100.297425][ T2557] WARNING: CPU: 0 PID: 2557 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) 
| [  100.298016][ T2557] Modules linked in:
| [  100.298853][ T2557] Tainted: [W]=WARN
[  100.299076][ T2557] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 100.299442][ T2557] 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) 
[ 100.299760][ T2557] 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
[  100.300831][ T2557] RSP: 0018:ffffc90004016f60 EFLAGS: 00010246
[  100.301207][ T2557] RAX: 0000000000000000 RBX: ffff888005562000 RCX: 0000000000000001
[  100.301653][ T2557] RDX: 0000000000000000 RSI: ffffffffa2110759 RDI: ffffffffa1858280
[  100.302094][ T2557] RBP: ffffc90004017050 R08: 0000000000000000 R09: 0000000000000000
[  100.302545][ T2557] R10: ffffc90004017080 R11: ffffffffa2b8d1e0 R12: 1ffff92000802df0
[  100.302984][ T2557] R13: 00000000000005dc R14: ffffc90004017080 R15: ffff888005562f48
[  100.303423][ T2557] FS:  00007f11184f2800(0000) GS:ffff8880c8799000(0000) knlGS:0000000000000000
[  100.303943][ T2557] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  100.304311][ T2557] CR2: 00000000004e6e18 CR3: 000000000ec87006 CR4: 0000000000772ef0
[  100.304784][ T2557] PKRU: 55555554
[  100.305007][ T2557] Call Trace:
[  100.305230][ T2557]  <TASK>
[ 100.305380][ T2557] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 100.305680][ T2557] ? __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) 
[ 100.306047][ T2557] ? br_del_if (net/bridge/br_if.c:742) 
[ 100.306270][ T2557] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 100.306572][ T2557] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 100.306867][ T2557] ? netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 100.307160][ T2557] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 100.307451][ T2557] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 100.307750][ T2557] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 100.308045][ T2557] ? ___sys_sendmsg (net/socket.c:2670) 
[ 100.308337][ T2557] ? __sys_sendmsg (net/socket.c:2700) 
[ 100.308637][ T2557] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 100.308930][ T2557] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 100.309296][ T2557] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 100.309608][ T2557] netif_set_mtu (net/core/dev.c:9652) 
[ 100.309901][ T2557] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 100.310212][ T2557] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 100.310435][ T2557] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 100.310739][ T2557] br_del_if (net/bridge/br_if.c:743) 
[ 100.310961][ T2557] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 100.311255][ T2557] do_set_master (net/core/rtnetlink.c:2932) 
[ 100.311555][ T2557] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 100.311851][ T2557] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 100.312148][ T2557] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 100.312518][ T2557] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 100.312820][ T2557] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 100.313114][ T2557] ? __kernel_text_address (kernel/extable.c:79) 
[ 100.313412][ T2557] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 100.313741][ T2557] ? __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) 
[ 100.314038][ T2557] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 100.314402][ T2557] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 100.314716][ T2557] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 100.315010][ T2557] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 100.315303][ T2557] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 100.315611][ T2557] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 100.315905][ T2557] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 100.316198][ T2557] ? __create_object (mm/kmemleak.c:771) 
[ 100.316491][ T2557] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 100.316794][ T2557] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 100.317090][ T2557] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 100.317455][ T2557] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 100.317763][ T2557] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 100.318067][ T2557] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 100.318361][ T2557] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 100.318668][ T2557] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 100.318964][ T2557] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 100.319255][ T2557] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 100.319557][ T2557] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 100.319852][ T2557] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 100.320148][ T2557] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 100.320451][ T2557] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 100.320773][ T2557] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 100.321067][ T2557] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 100.321365][ T2557] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 100.321678][ T2557] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 100.321972][ T2557] ? 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) 
[ 100.322267][ T2557] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 100.322574][ T2557] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 100.322868][ T2557] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 100.323168][ T2557] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 100.323465][ T2557] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 100.323766][ T2557] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 100.324067][ T2557] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 100.324362][ T2557] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 100.324670][ T2557] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 100.325047][ T2557] ___sys_sendmsg (net/socket.c:2670) 
[ 100.325339][ T2557] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 100.325639][ T2557] ? __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) 
[ 100.326006][ T2557] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 100.326303][ T2557] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 100.326609][ T2557] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 100.326911][ T2557] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 100.327206][ T2557] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 100.327497][ T2557] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 100.327808][ T2557] __sys_sendmsg (net/socket.c:2700) 
[ 100.328100][ T2557] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 100.328462][ T2557] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 100.328779][ T2557] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 100.329075][ T2557] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 100.329367][ T2557] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  100.329738][ T2557] RIP: 0033:0x7f11186bf1e7
[ 100.330039][ T2557] 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)
[  100.331098][ T2557] RSP: 002b:00007fff7c09f8d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  100.331558][ T2557] RAX: ffffffffffffffda RBX: 00007fff7c0a0000 RCX: 00007f11186bf1e7
[  100.332000][ T2557] RDX: 0000000000000000 RSI: 00007fff7c09f940 RDI: 0000000000000005
[  100.332440][ T2557] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  100.332887][ T2557] R10: 00007f11185bcee8 R11: 0000000000000246 R12: 0000000000000003
[  100.333329][ T2557] R13: 00000000686e56aa R14: 0000000000499600 R15: 0000000000000000
| [  101.015460][ T2565] ------------[ cut here ]------------
| [ 101.015773][ T2565] WARNING: CPU: 1 PID: 2565 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) 
| [  101.016352][ T2565] Modules linked in:
| [  101.017987][ T2565] Tainted: [W]=WARN
[  101.018211][ T2565] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 101.018584][ T2565] 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) 
[ 101.018889][ T2565] 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
[  101.019948][ T2565] RSP: 0018:ffffc90004006f60 EFLAGS: 00010246
[  101.020322][ T2565] RAX: 0000000000000000 RBX: ffff888005562000 RCX: 0000000000000001
[  101.020767][ T2565] RDX: 0000000000000000 RSI: ffffffffa2110759 RDI: ffffffffa1858280
[  101.021211][ T2565] RBP: ffffc90004007050 R08: 0000000000000000 R09: 0000000000000000
[  101.021659][ T2565] R10: ffffc90004007080 R11: ffffffffa2b8d1e0 R12: 1ffff92000800df0
[  101.022097][ T2565] R13: 00000000000005dc R14: ffffc90004007080 R15: ffff888005562f48
[  101.022551][ T2565] FS:  00007f7937f64800(0000) GS:ffff8880c8819000(0000) knlGS:0000000000000000
[  101.023064][ T2565] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  101.023438][ T2565] CR2: 00000000004e6e10 CR3: 000000000c5dc003 CR4: 0000000000772ef0
[  101.023884][ T2565] PKRU: 55555554
[  101.024102][ T2565] Call Trace:
[  101.024320][ T2565]  <TASK>
[ 101.024467][ T2565] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 101.024781][ T2565] ? __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) 
[ 101.025144][ T2565] ? br_del_if (net/bridge/br_if.c:742) 
[ 101.025371][ T2565] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 101.025673][ T2565] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 101.025963][ T2565] ? netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 101.026254][ T2565] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 101.026552][ T2565] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 101.026842][ T2565] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 101.027132][ T2565] ? ___sys_sendmsg (net/socket.c:2670) 
[ 101.027423][ T2565] ? __sys_sendmsg (net/socket.c:2700) 
[ 101.027739][ T2565] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 101.028033][ T2565] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 101.028394][ T2565] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 101.028702][ T2565] netif_set_mtu (net/core/dev.c:9652) 
[ 101.028995][ T2565] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 101.029302][ T2565] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 101.029535][ T2565] br_mtu_auto_adjust (net/bridge/br_if.c:525) 
[ 101.029836][ T2565] br_del_if (net/bridge/br_if.c:743) 
[ 101.030055][ T2565] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 101.030344][ T2565] do_set_master (net/core/rtnetlink.c:2932) 
[ 101.030645][ T2565] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 101.030941][ T2565] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 101.031238][ T2565] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 101.031617][ T2565] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 101.031912][ T2565] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 101.032203][ T2565] ? __kernel_text_address (kernel/extable.c:79) 
[ 101.032499][ T2565] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 101.032803][ T2565] ? __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) 
[ 101.033096][ T2565] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 101.033458][ T2565] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 101.033761][ T2565] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 101.034053][ T2565] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 101.034349][ T2565] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 101.034656][ T2565] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 101.034952][ T2565] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 101.035241][ T2565] ? __create_object (mm/kmemleak.c:771) 
[ 101.035543][ T2565] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 101.035837][ T2565] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 101.036130][ T2565] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 101.036496][ T2565] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 101.036805][ T2565] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 101.037103][ T2565] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 101.037393][ T2565] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 101.037701][ T2565] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 101.037995][ T2565] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 101.038285][ T2565] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 101.038586][ T2565] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 101.038884][ T2565] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 101.039179][ T2565] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 101.039478][ T2565] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 101.039785][ T2565] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 101.040078][ T2565] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 101.040374][ T2565] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 101.040686][ T2565] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 101.040982][ T2565] ? 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) 
[ 101.041276][ T2565] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 101.041579][ T2565] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 101.041871][ T2565] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 101.042168][ T2565] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 101.042462][ T2565] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 101.042763][ T2565] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 101.043069][ T2565] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 101.043364][ T2565] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 101.043661][ T2565] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 101.044038][ T2565] ___sys_sendmsg (net/socket.c:2670) 
[ 101.044326][ T2565] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 101.044626][ T2565] ? __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) 
[ 101.044993][ T2565] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 101.045294][ T2565] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 101.045598][ T2565] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 101.045900][ T2565] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 101.046196][ T2565] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 101.046487][ T2565] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 101.046801][ T2565] __sys_sendmsg (net/socket.c:2700) 
[ 101.047103][ T2565] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 101.047466][ T2565] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 101.047783][ T2565] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 101.048079][ T2565] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 101.048373][ T2565] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  101.048743][ T2565] RIP: 0033:0x7f79381311e7
[ 101.049046][ T2565] 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)
[  101.050103][ T2565] RSP: 002b:00007fff0cd7cf78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  101.050552][ T2565] RAX: ffffffffffffffda RBX: 00007fff0cd7d6a0 RCX: 00007f79381311e7
[  101.050991][ T2565] RDX: 0000000000000000 RSI: 00007fff0cd7cfe0 RDI: 0000000000000005
[  101.051427][ T2565] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[  101.051876][ T2565] R10: 00007f793802eee8 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
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