======================================
| [   19.025635][  T298] veth1: entered promiscuous mode
| [   19.028074][  T298] ------------[ cut here ]------------
| [ 19.028422][ T298] WARNING: CPU: 0 PID: 298 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) 
| [   19.029521][  T298] Modules linked in: bridge stp llc vrf veth
[   19.030591][  T298] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.030986][ T298] 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) 
[ 19.031302][ T298] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  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
[   19.032545][  T298] RSP: 0018:ffffc900005a6ef0 EFLAGS: 00010246
[   19.032961][  T298] RAX: 0000000000000000 RBX: ffff88800b43a000 RCX: 0000000000000001
[   19.033432][  T298] RDX: 0000000000000000 RSI: ffffffff9909b939 RDI: ffffffff988555e0
[   19.034148][  T298] RBP: ffffc900005a6fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.034635][  T298] R10: ffffc900005a7010 R11: ffffffff99ea8918 R12: 1ffff920000b4de2
[   19.035109][  T298] R13: 00000000000005dc R14: ffffc900005a7010 R15: ffff88800b43af08
[   19.035576][  T298] FS:  00007f8b344ae800(0000) GS:ffff88809b0b7000(0000) knlGS:0000000000000000
[   19.036167][  T298] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.036565][  T298] CR2: 00000000004e5aa8 CR3: 000000000a466006 CR4: 0000000000772ef0
[   19.037041][  T298] PKRU: 55555554
[   19.037277][  T298] Call Trace:
[   19.037513][  T298]  <TASK>
[ 19.037685][ T298] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.038000][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.038321][ T298] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.038630][ T298] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.039026][ T298] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.039340][ T298] netif_set_mtu (net/core/dev.c:9652) 
[ 19.039694][ T298] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.040024][ T298] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.040460][ T298] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.040737][ T298] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.041158][ T298] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.041527][ T298] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 19.041865][ T298] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.042179][ T298] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.042568][ T298] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.042894][ T298] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.043204][ T298] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.043516][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.043847][ T298] ? __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) 
[ 19.044160][ T298] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.044558][ T298] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.044878][ T298] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.045191][ T298] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.045499][ T298] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.045825][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.046150][ T298] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.046457][ T298] ? __create_object (mm/kmemleak.c:771) 
[ 19.046777][ T298] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.047089][ T298] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.047410][ T298] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.047816][ T298] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.048140][ T298] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.048464][ T298] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.048789][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.049114][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.049431][ T298] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.049762][ T298] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.050084][ T298] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.050402][ T298] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.050737][ T298] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.051060][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.051380][ T298] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.051717][ T298] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.052034][ T298] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.052363][ T298] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.052687][ T298] ? 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) 
[ 19.053002][ T298] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.053316][ T298] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.053626][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.053958][ T298] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.054284][ T298] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.054601][ T298] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.054929][ T298] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.055244][ T298] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.055553][ T298] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.055972][ T298] ___sys_sendmsg (net/socket.c:2670) 
[ 19.056285][ T298] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.056605][ T298] ? __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) 
[ 19.057007][ T298] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.057321][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.057634][ T298] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.057966][ T298] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.058281][ T298] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.058596][ T298] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.058934][ T298] __sys_sendmsg (net/socket.c:2700) 
[ 19.059253][ T298] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.059637][ T298] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.060483][ T298] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.061035][ T298] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.061349][ T298] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.061747][  T298] RIP: 0033:0x7f8b3467b1e7
[ 19.062316][ T298] 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)
[   19.063448][  T298] RSP: 002b:00007fff2e8cc3d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.063965][  T298] RAX: ffffffffffffffda RBX: 00007fff2e8ccb00 RCX: 00007f8b3467b1e7
[   19.064454][  T298] RDX: 0000000000000000 RSI: 00007fff2e8cc440 RDI: 0000000000000005
[   19.065162][  T298] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.065633][  T298] R10: 000000003ce9f910 R11: 0000000000000246 R12: 0000000000000004
[   19.066105][  T298] R13: 00000000686e7438 R14: 0000000000499600 R15: 0000000000000000
| [   19.310360][  T302] ------------[ cut here ]------------
| [ 19.310687][ T302] WARNING: CPU: 3 PID: 302 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   19.311298][  T302] Modules linked in: bridge stp llc vrf veth
| [   19.312581][  T302] Tainted: [W]=WARN
[   19.312827][  T302] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.313213][ T302] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 19.313529][ T302] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  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
[   19.314668][  T302] RSP: 0018:ffffc900005a6ef0 EFLAGS: 00010246
[   19.315058][  T302] RAX: 0000000000000000 RBX: ffff88800b43a000 RCX: 0000000000000001
[   19.315520][  T302] RDX: 0000000000000000 RSI: ffffffff9909b939 RDI: ffffffff988555e0
[   19.316515][  T302] RBP: ffffc900005a6fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.316988][  T302] R10: ffffc900005a7010 R11: ffffffff99ea8918 R12: 1ffff920000b4de2
[   19.317456][  T302] R13: 00000000000005dc R14: ffffc900005a7010 R15: ffff88800b43af08
[   19.317932][  T302] FS:  00007f6776136800(0000) GS:ffff88809b237000(0000) knlGS:0000000000000000
[   19.318471][  T302] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.318880][  T302] CR2: 00000000004e5ab0 CR3: 000000000b66b002 CR4: 0000000000772ef0
[   19.319353][  T302] PKRU: 55555554
[   19.319583][  T302] Call Trace:
[   19.319845][  T302]  <TASK>
[ 19.320016][ T302] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.320342][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.320668][ T302] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.320978][ T302] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.321372][ T302] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.321695][ T302] netif_set_mtu (net/core/dev.c:9652) 
[ 19.322003][ T302] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.322320][ T302] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.322772][ T302] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.323005][ T302] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.323428][ T302] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.323806][ T302] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 19.324124][ T302] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.324447][ T302] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.324845][ T302] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.325154][ T302] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.325458][ T302] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.325782][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.326097][ T302] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 19.326405][ T302] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.326793][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.327101][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.327406][ T302] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.327732][ T302] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.328043][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.328353][ T302] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.328676][ T302] ? __create_object (mm/kmemleak.c:771) 
[ 19.328985][ T302] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.329290][ T302] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.329595][ T302] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.329981][ T302] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.330293][ T302] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.330605][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.330923][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.331267][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.331699][ T302] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.332045][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.332559][ T302] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.333061][ T302] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.333439][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.333810][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.334337][ T302] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.334852][ T302] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.335168][ T302] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.335548][ T302] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.335900][ T302] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 19.336228][ T302] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.336553][ T302] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.336895][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.337226][ T302] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.337550][ T302] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.337885][ T302] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.338220][ T302] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.338546][ T302] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.338874][ T302] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.339293][ T302] ___sys_sendmsg (net/socket.c:2670) 
[ 19.339609][ T302] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.339947][ T302] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 19.340349][ T302] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.340697][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.341025][ T302] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.341350][ T302] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.341687][ T302] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.342010][ T302] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.342337][ T302] __sys_sendmsg (net/socket.c:2700) 
[ 19.342665][ T302] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.343059][ T302] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.343391][ T302] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.343733][ T302] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.344062][ T302] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.344480][  T302] RIP: 0033:0x7f67763031e7
[ 19.344824][ T302] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   19.345975][  T302] RSP: 002b:00007ffe627d63b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.346469][  T302] RAX: ffffffffffffffda RBX: 00007ffe627d6ae0 RCX: 00007f67763031e7
[   19.346957][  T302] RDX: 0000000000000000 RSI: 00007ffe627d6420 RDI: 0000000000000005
[   19.347435][  T302] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.347931][  T302] R10: 000000003aad5910 R11: 0000000000000246 R12: 0000000000000004
[   19.348419][  T302] R13: 00000000686e7438 R14: 0000000000499600 R15: 0000000000000000
| [   49.983821][  T519] ------------[ cut here ]------------
| [ 49.984142][ T519] WARNING: CPU: 0 PID: 519 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) 
| [   49.985166][  T519] Modules linked in: act_gact cls_flower sch_ingress bridge stp llc vrf veth
| [   49.986350][  T519] Tainted: [W]=WARN
[   49.986583][  T519] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 49.986974][ T519] 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) 
[ 49.987296][ T519] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  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
[   49.988406][  T519] RSP: 0018:ffffc90000da6f70 EFLAGS: 00010246
[   49.988810][  T519] RAX: 0000000000000000 RBX: ffff88800b43a000 RCX: 0000000000000001
[   49.989288][  T519] RDX: 0000000000000000 RSI: ffffffff9909b939 RDI: ffffffff988555e0
[   49.989751][  T519] RBP: ffffc90000da7058 R08: 0000000000000000 R09: 0000000000000000
[   49.990210][  T519] R10: ffffc90000da7088 R11: ffffffff95400130 R12: 1ffff920001b4df2
[   49.990676][  T519] R13: 00000000000005dc R14: ffffc90000da7088 R15: ffff88800b43af08
[   49.991143][  T519] FS:  00007f6a2e200800(0000) GS:ffff88809b0b7000(0000) knlGS:0000000000000000
[   49.991686][  T519] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   49.992074][  T519] CR2: 00000000004e5ab0 CR3: 000000000508a005 CR4: 0000000000772ef0
[   49.992532][  T519] PKRU: 55555554
[   49.992772][  T519] Call Trace:
[   49.993003][  T519]  <TASK>
[ 49.993166][ T519] ? __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) 
[ 49.993562][ T519] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 49.993913][ T519] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 49.994233][ T519] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 49.994552][ T519] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 49.994893][ T519] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 49.995202][ T519] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 49.995536][ T519] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 49.995871][ T519] ? ___sys_sendmsg (net/socket.c:2670) 
[ 49.996178][ T519] ? __sys_sendmsg (net/socket.c:2700) 
[ 49.996479][ T519] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 49.996804][ T519] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 49.997182][ T519] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 49.997496][ T519] netif_set_mtu (net/core/dev.c:9652) 
[ 49.997812][ T519] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 49.998148][ T519] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 49.998406][ T519] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 49.998852][ T519] br_del_if (net/bridge/br_if.c:743) bridge 
[ 49.999185][ T519] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 49.999493][ T519] do_set_master (net/core/rtnetlink.c:2932) 
[ 49.999829][ T519] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 50.000138][ T519] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 50.000522][ T519] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 50.000849][ T519] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 50.001154][ T519] ? __kernel_text_address (kernel/extable.c:79) 
[ 50.001467][ T519] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 50.001786][ T519] ? __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) 
[ 50.002091][ T519] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 50.002471][ T519] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 50.002789][ T519] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 50.003097][ T519] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 50.003402][ T519] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 50.003739][ T519] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 50.004051][ T519] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 50.004367][ T519] ? __create_object (mm/kmemleak.c:771) 
[ 50.004692][ T519] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 50.005000][ T519] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 50.005303][ T519] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 50.005702][ T519] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 50.006012][ T519] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 50.006343][ T519] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 50.006645][ T519] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 50.006971][ T519] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 50.007280][ T519] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 50.007582][ T519] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 50.007905][ T519] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 50.008211][ T519] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 50.008516][ T519] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 50.008835][ T519] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 50.009147][ T519] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 50.009456][ T519] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 50.009775][ T519] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 50.010094][ T519] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 50.010406][ T519] ? 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) 
[ 50.010723][ T519] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 50.011034][ T519] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 50.011340][ T519] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 50.011648][ T519] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 50.011975][ T519] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 50.012279][ T519] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 50.012599][ T519] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 50.012917][ T519] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 50.013221][ T519] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 50.013612][ T519] ___sys_sendmsg (net/socket.c:2670) 
[ 50.013924][ T519] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 50.014252][ T519] ? __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) 
[ 50.014636][ T519] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 50.014964][ T519] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 50.015275][ T519] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 50.015589][ T519] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 50.015905][ T519] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 50.016212][ T519] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 50.016525][ T519] __sys_sendmsg (net/socket.c:2700) 
[ 50.016839][ T519] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 50.017225][ T519] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 50.017545][ T519] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 50.017862][ T519] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 50.018171][ T519] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   50.018549][  T519] RIP: 0033:0x7f6a2e3cd1e7
[ 50.018883][ T519] 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)
[   50.020006][  T519] RSP: 002b:00007ffeb0101ae8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   50.020469][  T519] RAX: ffffffffffffffda RBX: 00007ffeb0102210 RCX: 00007f6a2e3cd1e7
[   50.020936][  T519] RDX: 0000000000000000 RSI: 00007ffeb0101b50 RDI: 0000000000000005
[   50.021413][  T519] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   50.021882][  T519] R10: 00007f6a2e2caee8 R11: 0000000000000246 R12: 0000000000000003
[   50.022341][  T519] R13: 00000000686e7457 R14: 0000000000499600 R15: 0000000000000000
| [   50.265437][  T521] ------------[ cut here ]------------
| [ 50.267126][ T521] WARNING: CPU: 1 PID: 521 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) 
| [   50.267743][  T521] Modules linked in: act_gact cls_flower sch_ingress bridge stp llc vrf veth
| [   50.268963][  T521] Tainted: [W]=WARN
[   50.269194][  T521] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 50.269574][ T521] 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) 
[ 50.269902][ T521] Code: 00 00 8b 05 b7 bb 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 fa 61 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 b7 bb 3a 02    	mov    0x23abbb7(%rip),%eax        # 0x23abbbf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 fa 61 7b 00       	call   0x7b621b
  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
[   50.270988][  T521] RSP: 0018:ffffc90000da6f70 EFLAGS: 00010246
[   50.271372][  T521] RAX: 0000000000000000 RBX: ffff88800b43a000 RCX: 0000000000000001
[   50.271835][  T521] RDX: 0000000000000000 RSI: ffffffff9909b939 RDI: ffffffff988555e0
[   50.272290][  T521] RBP: ffffc90000da7058 R08: 0000000000000000 R09: 0000000000000000
[   50.272753][  T521] R10: ffffc90000da7088 R11: ffffffff99579160 R12: 1ffff920001b4df2
[   50.273208][  T521] R13: 00000000000005dc R14: ffffc90000da7088 R15: ffff88800b43af08
[   50.273676][  T521] FS:  00007f52e7d70800(0000) GS:ffff88809b137000(0000) knlGS:0000000000000000
[   50.274217][  T521] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   50.274606][  T521] CR2: 00000000004e5aa8 CR3: 000000000abdb001 CR4: 0000000000772ef0
[   50.275072][  T521] PKRU: 55555554
[   50.275301][  T521] Call Trace:
[   50.275529][  T521]  <TASK>
[ 50.275692][ T521] ? __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) 
[ 50.276081][ T521] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 50.276422][ T521] ? do_set_master (net/core/rtnetlink.c:2932) 
[ 50.276735][ T521] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 50.277041][ T521] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 50.277345][ T521] ? netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 50.277648][ T521] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 50.277967][ T521] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 50.278274][ T521] ? ___sys_sendmsg (net/socket.c:2670) 
[ 50.278584][ T521] ? __sys_sendmsg (net/socket.c:2700) 
[ 50.278899][ T521] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 50.279212][ T521] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 50.279598][ T521] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 50.279928][ T521] netif_set_mtu (net/core/dev.c:9652) 
[ 50.280235][ T521] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 50.280556][ T521] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 50.280808][ T521] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 50.281227][ T521] br_del_if (net/bridge/br_if.c:743) bridge 
[ 50.281559][ T521] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 50.281881][ T521] do_set_master (net/core/rtnetlink.c:2932) 
[ 50.282188][ T521] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 50.282498][ T521] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 50.282894][ T521] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 50.283204][ T521] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 50.283509][ T521] ? __kernel_text_address (kernel/extable.c:79) 
[ 50.283826][ T521] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 50.284136][ T521] ? __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) 
[ 50.284448][ T521] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 50.284855][ T521] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 50.285163][ T521] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 50.285467][ T521] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 50.285791][ T521] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 50.286098][ T521] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 50.286403][ T521] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 50.286720][ T521] ? __create_object (mm/kmemleak.c:771) 
[ 50.287033][ T521] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 50.287338][ T521] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 50.287642][ T521] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 50.288044][ T521] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 50.288356][ T521] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 50.288683][ T521] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 50.289022][ T521] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 50.289339][ T521] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 50.289644][ T521] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 50.289960][ T521] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 50.290266][ T521] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 50.290580][ T521] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 50.290901][ T521] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 50.291211][ T521] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 50.291520][ T521] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 50.291839][ T521] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 50.292146][ T521] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 50.292461][ T521] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 50.292783][ T521] ? 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) 
[ 50.293093][ T521] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 50.293401][ T521] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 50.293721][ T521] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 50.294033][ T521] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 50.294353][ T521] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 50.294676][ T521] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 50.295001][ T521] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 50.295317][ T521] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 50.295622][ T521] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 50.296029][ T521] ___sys_sendmsg (net/socket.c:2670) 
[ 50.296333][ T521] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 50.296639][ T521] ? __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) 
[ 50.297030][ T521] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 50.297350][ T521] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 50.297682][ T521] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 50.297998][ T521] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 50.298303][ T521] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 50.298608][ T521] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 50.298933][ T521] __sys_sendmsg (net/socket.c:2700) 
[ 50.299243][ T521] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 50.299623][ T521] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 50.299961][ T521] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 50.300268][ T521] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 50.300573][ T521] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   50.300961][  T521] RIP: 0033:0x7f52e7f3d1e7
[ 50.301285][ T521] 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)
[   50.302382][  T521] RSP: 002b:00007ffc810a5b08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   50.302850][  T521] RAX: ffffffffffffffda RBX: 00007ffc810a6230 RCX: 00007f52e7f3d1e7
[   50.303313][  T521] RDX: 0000000000000000 RSI: 00007ffc810a5b70 RDI: 0000000000000005
[   50.303779][  T521] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   50.304254][  T521] R10: 00007f52e7e3aee8 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