======================================
| [   19.715577][  T305] veth1: entered promiscuous mode
| [   19.718019][  T305] ------------[ cut here ]------------
| [ 19.718377][ T305] WARNING: CPU: 2 PID: 305 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) 
| [   19.719889][  T305] Modules linked in: bridge stp llc sch_ingress vrf veth
[   19.720981][  T305] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.721386][ T305] 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) 
[ 19.721727][ T305] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   19.722893][  T305] RSP: 0018:ffffc90000556ef0 EFLAGS: 00010246
[   19.723302][  T305] RAX: 0000000000000000 RBX: ffff888002a92000 RCX: 0000000000000001
[   19.723795][  T305] RDX: 0000000000000000 RSI: ffffffff8ca9b941 RDI: ffffffff8c2555e0
[   19.724281][  T305] RBP: ffffc90000556fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.724755][  T305] R10: ffffc90000557010 R11: ffffffff8d8a8918 R12: 1ffff920000aade2
[   19.725244][  T305] R13: 00000000000005dc R14: ffffc90000557010 R15: ffff888002a92f08
[   19.725717][  T305] FS:  00007f3585708800(0000) GS:ffff8880a77b7000(0000) knlGS:0000000000000000
[   19.726329][  T305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.726738][  T305] CR2: 00000000004e5aa8 CR3: 0000000008fa8004 CR4: 0000000000772ef0
[   19.727225][  T305] PKRU: 55555554
[   19.727473][  T305] Call Trace:
[   19.727715][  T305]  <TASK>
[ 19.727925][ T305] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.728255][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.728881][ T305] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.729225][ T305] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.729626][ T305] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.729994][ T305] netif_set_mtu (net/core/dev.c:9652) 
[ 19.730332][ T305] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.730673][ T305] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.731143][ T305] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.731393][ T305] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.731877][ T305] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.732254][ T305] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.732587][ T305] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.732933][ T305] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.733338][ T305] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.733659][ T305] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.734036][ T305] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.734376][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.734709][ T305] ? __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) 
[ 19.735067][ T305] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.735470][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.735804][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.736138][ T305] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.736463][ T305] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.736794][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.737116][ T305] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.737445][ T305] ? __create_object (mm/kmemleak.c:771) 
[ 19.737780][ T305] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.738139][ T305] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.738469][ T305] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.738894][ T305] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.739252][ T305] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.739590][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.739924][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.740262][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.740583][ T305] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.740912][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.741233][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.741568][ T305] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.741914][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.742282][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.742626][ T305] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.742972][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.743307][ T305] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.743637][ T305] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.743985][ T305] ? 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) 
[ 19.744320][ T305] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.744645][ T305] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.744980][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.745320][ T305] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.745659][ T305] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.745991][ T305] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.746336][ T305] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.746725][ T305] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.747076][ T305] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.747497][ T305] ___sys_sendmsg (net/socket.c:2670) 
[ 19.747830][ T305] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.748162][ T305] ? __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) 
[ 19.748565][ T305] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.748910][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.749279][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.749612][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.749955][ T305] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.750334][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.750676][ T305] __sys_sendmsg (net/socket.c:2700) 
[ 19.751019][ T305] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.751423][ T305] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.751757][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.752102][ T305] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.752436][ T305] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.752845][  T305] RIP: 0033:0x7f35858d51e7
[ 19.753188][ T305] 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)
[   19.754395][  T305] RSP: 002b:00007fff0021f958 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.754898][  T305] RAX: ffffffffffffffda RBX: 00007fff00220080 RCX: 00007f35858d51e7
[   19.755392][  T305] RDX: 0000000000000000 RSI: 00007fff0021f9c0 RDI: 0000000000000005
[   19.755889][  T305] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.756382][  T305] R10: 000000000239e910 R11: 0000000000000246 R12: 0000000000000004
[   19.756881][  T305] R13: 00000000686e13e1 R14: 0000000000499600 R15: 0000000000000000
| [   19.999628][  T308] ------------[ cut here ]------------
| [ 19.999968][ T308] WARNING: CPU: 3 PID: 308 at ./include/net/netdev_lock.h:17 netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
| [   20.000579][  T308] Modules linked in: bridge stp llc sch_ingress vrf veth
| [   20.002633][  T308] Tainted: [W]=WARN
[   20.002881][  T308] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 20.003279][ T308] RIP: 0010:netif_set_mtu_ext (./include/net/netdev_lock.h:17 ./include/net/netdev_lock.h:15 ./include/net/netdev_lock.h:25 net/core/dev.c:9610) 
[ 20.003592][ T308] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   20.004690][  T308] RSP: 0018:ffffc90000556ef0 EFLAGS: 00010246
[   20.005085][  T308] RAX: 0000000000000000 RBX: ffff888002a92000 RCX: 0000000000000001
[   20.005547][  T308] RDX: 0000000000000000 RSI: ffffffff8ca9b941 RDI: ffffffff8c2555e0
[   20.006012][  T308] RBP: ffffc90000556fe0 R08: 0000000000000000 R09: 0000000000000000
[   20.006471][  T308] R10: ffffc90000557010 R11: ffffffff8d8a8918 R12: 1ffff920000aade2
[   20.006935][  T308] R13: 00000000000005dc R14: ffffc90000557010 R15: ffff888002a92f08
[   20.007395][  T308] FS:  00007fd45cc8c800(0000) GS:ffff8880a7837000(0000) knlGS:0000000000000000
[   20.007937][  T308] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   20.008318][  T308] CR2: 00000000004e5ab0 CR3: 000000000a9b1004 CR4: 0000000000772ef0
[   20.008788][  T308] PKRU: 55555554
[   20.009027][  T308] Call Trace:
[   20.009257][  T308]  <TASK>
[ 20.009422][ T308] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 20.009727][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.010053][ T308] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 20.010360][ T308] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 20.010743][ T308] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 20.011062][ T308] netif_set_mtu (net/core/dev.c:9652) 
[ 20.011369][ T308] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 20.011688][ T308] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 20.012128][ T308] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 20.012362][ T308] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 20.012797][ T308] br_add_if (net/bridge/br_if.c:697) bridge 
[ 20.013155][ T308] do_set_master (net/core/rtnetlink.c:2948) 
[ 20.013466][ T308] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 20.013789][ T308] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 20.014189][ T308] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 20.014494][ T308] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 20.014812][ T308] ? __kernel_text_address (kernel/extable.c:79) 
[ 20.015124][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.015431][ T308] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:113) 
[ 20.015735][ T308] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 20.016130][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.016442][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.016749][ T308] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 20.017070][ T308] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 20.017378][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.017687][ T308] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 20.018000][ T308] ? __create_object (mm/kmemleak.c:771) 
[ 20.018311][ T308] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 20.018619][ T308] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 20.018972][ T308] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 20.019365][ T308] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 20.019678][ T308] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 20.019998][ T308] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.020303][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.020618][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.020989][ T308] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 20.021324][ T308] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.021650][ T308] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 20.021980][ T308] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 20.022303][ T308] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.022628][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.022962][ T308] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 20.023284][ T308] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 20.023605][ T308] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 20.023955][ T308] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 20.024278][ T308] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 20.024603][ T308] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 20.024937][ T308] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 20.025259][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.025584][ T308] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 20.025917][ T308] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 20.026247][ T308] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 20.026575][ T308] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 20.026916][ T308] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 20.027240][ T308] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 20.027652][ T308] ___sys_sendmsg (net/socket.c:2670) 
[ 20.027980][ T308] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 20.028304][ T308] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:109 ./arch/x86/include/asm/irqflags.h:127 kernel/rcu/tree.c:3096) 
[ 20.028713][ T308] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 20.029054][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.029382][ T308] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 20.029707][ T308] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 20.030032][ T308] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 20.030356][ T308] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 20.030685][ T308] __sys_sendmsg (net/socket.c:2700) 
[ 20.031027][ T308] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 20.031426][ T308] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 20.031780][ T308] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 20.032102][ T308] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 20.032427][ T308] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   20.032837][  T308] RIP: 0033:0x7fd45ce591e7
[ 20.033168][ T308] Code: 0e 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10
All code
========
   0:	0e                   	(bad)
   1:	00 f7                	add    %dh,%bh
   3:	d8 64 89 02          	fsubs  0x2(%rcx,%rcx,4)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b9                	jmp    0xffffffffffffffc9
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 2e 00 00 00       	mov    $0x2e,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  3b:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	89 54 24 1c          	mov    %edx,0x1c(%rsp)
  11:	48 89 74 24 10       	mov    %rsi,0x10(%rsp)
[   20.034335][  T308] RSP: 002b:00007fffc94da0e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   20.034838][  T308] RAX: ffffffffffffffda RBX: 00007fffc94da810 RCX: 00007fd45ce591e7
[   20.035322][  T308] RDX: 0000000000000000 RSI: 00007fffc94da150 RDI: 0000000000000005
[   20.035821][  T308] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   20.036305][  T308] R10: 000000000f047910 R11: 0000000000000246 R12: 0000000000000004
[   20.036797][  T308] R13: 00000000686e13e1 R14: 0000000000499600 R15: 0000000000000000
| [   66.890175][  T738] ------------[ cut here ]------------
| [ 66.890539][ T738] WARNING: CPU: 0 PID: 738 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) 
| [   66.891170][  T738] Modules linked in: act_gact act_pedit cls_flower bridge stp llc sch_ingress vrf veth
| [   66.892353][  T738] Tainted: [W]=WARN
[   66.892593][  T738] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 66.893472][ T738] 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) 
[ 66.893801][ T738] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   66.894898][  T738] RSP: 0018:ffffc900013b6f70 EFLAGS: 00010246
[   66.895292][  T738] RAX: 0000000000000000 RBX: ffff888002a92000 RCX: 0000000000000001
[   66.895747][  T738] RDX: 0000000000000000 RSI: ffffffff8ca9b941 RDI: ffffffff8c2555e0
[   66.896234][  T738] RBP: ffffc900013b7058 R08: 0000000000000000 R09: 0000000000000000
[   66.896711][  T738] R10: ffffc900013b7088 R11: ffffffff88e00130 R12: 1ffff92000276df2
[   66.897204][  T738] R13: 00000000000005dc R14: ffffc900013b7088 R15: ffff888002a92f08
[   66.897691][  T738] FS:  00007f421234d800(0000) GS:ffff8880a76b7000(0000) knlGS:0000000000000000
[   66.898265][  T738] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   66.898668][  T738] CR2: 00000000004e5ab0 CR3: 000000000e7b2006 CR4: 0000000000772ef0
[   66.899168][  T738] PKRU: 55555554
[   66.899404][  T738] Call Trace:
[   66.899647][  T738]  <TASK>
[ 66.899837][ T738] ? __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) 
[ 66.900242][ T738] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 66.900606][ T738] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 66.900944][ T738] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 66.901267][ T738] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 66.901587][ T738] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 66.901928][ T738] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 66.902250][ T738] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 66.902571][ T738] ? ___sys_sendmsg (net/socket.c:2670) 
[ 66.902904][ T738] ? __sys_sendmsg (net/socket.c:2700) 
[ 66.903225][ T738] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 66.903545][ T738] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 66.903958][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.904296][ T738] netif_set_mtu (net/core/dev.c:9652) 
[ 66.904618][ T738] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 66.904967][ T738] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 66.905212][ T738] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 66.905652][ T738] br_del_if (net/bridge/br_if.c:743) bridge 
[ 66.906021][ T738] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 66.906342][ T738] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 66.906664][ T738] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 66.907000][ T738] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 66.907411][ T738] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 66.907732][ T738] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 66.908074][ T738] ? __kernel_text_address (kernel/extable.c:79) 
[ 66.908405][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.908743][ T738] ? __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) 
[ 66.909068][ T738] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 66.909455][ T738] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 66.909776][ T738] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 66.910079][ T738] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 66.910382][ T738] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 66.910693][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.911026][ T738] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 66.911327][ T738] ? __create_object (mm/kmemleak.c:771) 
[ 66.911634][ T738] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 66.911962][ T738] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 66.912269][ T738] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 66.912646][ T738] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 66.912964][ T738] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 66.913274][ T738] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 66.913578][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.913895][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.914199][ T738] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 66.914503][ T738] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 66.914815][ T738] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 66.915120][ T738] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 66.915422][ T738] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 66.915730][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.916058][ T738] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 66.916364][ T738] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 66.916674][ T738] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 66.916998][ T738] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 66.917300][ T738] ? 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) 
[ 66.917606][ T738] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 66.917922][ T738] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 66.918224][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.918531][ T738] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 66.918847][ T738] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 66.919164][ T738] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 66.919475][ T738] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 66.919807][ T738] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 66.920159][ T738] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 66.920570][ T738] ___sys_sendmsg (net/socket.c:2670) 
[ 66.920896][ T738] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 66.921218][ T738] ? __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) 
[ 66.921614][ T738] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 66.921947][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.922273][ T738] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 66.922598][ T738] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 66.922927][ T738] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 66.923248][ T738] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 66.923583][ T738] __sys_sendmsg (net/socket.c:2700) 
[ 66.923924][ T738] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 66.924324][ T738] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 66.924657][ T738] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 66.924988][ T738] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 66.925312][ T738] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   66.925707][  T738] RIP: 0033:0x7f421251a1e7
[ 66.926051][ T738] 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)
[   66.927217][  T738] RSP: 002b:00007fff7bfa02b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   66.927706][  T738] RAX: ffffffffffffffda RBX: 00007fff7bfa09e0 RCX: 00007f421251a1e7
[   66.928213][  T738] RDX: 0000000000000000 RSI: 00007fff7bfa0320 RDI: 0000000000000005
[   66.928702][  T738] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   66.929205][  T738] R10: 00007f4212417ee8 R11: 0000000000000246 R12: 0000000000000003
[   66.929687][  T738] R13: 00000000686e1410 R14: 0000000000499600 R15: 0000000000000000
| [   67.182381][  T740] ------------[ cut here ]------------
| [ 67.182744][ T740] WARNING: CPU: 1 PID: 740 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) 
| [   67.183413][  T740] Modules linked in: act_gact act_pedit cls_flower bridge stp llc sch_ingress vrf veth
| [   67.184649][  T740] Tainted: [W]=WARN
[   67.184912][  T740] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 67.185424][ T740] 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) 
[ 67.185913][ T740] Code: 00 00 8b 05 d7 bc 3a 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 1a 63 7b 00 85 c0 0f 85 39 fe ff ff 90 <0f> 0b 90 e9 30 fe ff ff 48 b8 00 00 00 00 00 fc ff df 4c 89 fa 48
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	8b 05 d7 bc 3a 02    	mov    0x23abcd7(%rip),%eax        # 0x23abcdf
   8:	85 c0                	test   %eax,%eax
   a:	0f 84 52 fe ff ff    	je     0xfffffffffffffe62
  10:	48 8d bb a0 0c 00 00 	lea    0xca0(%rbx),%rdi
  17:	be ff ff ff ff       	mov    $0xffffffff,%esi
  1c:	e8 1a 63 7b 00       	call   0x7b633b
  21:	85 c0                	test   %eax,%eax
  23:	0f 85 39 fe ff ff    	jne    0xfffffffffffffe62
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	e9 30 fe ff ff       	jmp    0xfffffffffffffe62
  32:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  39:	fc ff df 
  3c:	4c 89 fa             	mov    %r15,%rdx
  3f:	48                   	rex.W

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	e9 30 fe ff ff       	jmp    0xfffffffffffffe38
   8:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   f:	fc ff df 
  12:	4c 89 fa             	mov    %r15,%rdx
  15:	48                   	rex.W
[   67.187064][  T740] RSP: 0018:ffffc900013d6f70 EFLAGS: 00010246
[   67.187475][  T740] RAX: 0000000000000000 RBX: ffff888002a92000 RCX: 0000000000000001
[   67.187971][  T740] RDX: 0000000000000000 RSI: ffffffff8ca9b941 RDI: ffffffff8c2555e0
[   67.188450][  T740] RBP: ffffc900013d7058 R08: 0000000000000000 R09: 0000000000000000
[   67.188947][  T740] R10: ffffc900013d7088 R11: ffffffff8cf79160 R12: 1ffff9200027adf2
[   67.189446][  T740] R13: 00000000000005dc R14: ffffc900013d7088 R15: ffff888002a92f08
[   67.189935][  T740] FS:  00007f2e7c304800(0000) GS:ffff8880a7737000(0000) knlGS:0000000000000000
[   67.190513][  T740] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   67.190967][  T740] CR2: 00000000004e5aa8 CR3: 000000000e787003 CR4: 0000000000772ef0
[   67.191563][  T740] PKRU: 55555554
[   67.191845][  T740] Call Trace:
[   67.192094][  T740]  <TASK>
[ 67.192259][ T740] ? __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) 
[ 67.192704][ T740] ? br_del_if (net/bridge/br_if.c:742) bridge 
[ 67.193094][ T740] ? do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 67.193428][ T740] ? do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 67.193747][ T740] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 67.194074][ T740] ? netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 67.194399][ T740] ? netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 67.194722][ T740] ? ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 67.195058][ T740] ? ___sys_sendmsg (net/socket.c:2670) 
[ 67.195378][ T740] ? __sys_sendmsg (net/socket.c:2700) 
[ 67.195694][ T740] ? do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 67.196045][ T740] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 67.196444][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 67.196794][ T740] netif_set_mtu (net/core/dev.c:9652) 
[ 67.197124][ T740] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 67.197466][ T740] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 67.197716][ T740] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 67.198171][ T740] br_del_if (net/bridge/br_if.c:743) bridge 
[ 67.198537][ T740] ? rtnl_is_locked (net/core/rtnetlink.c:169) 
[ 67.198868][ T740] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2933) 
[ 67.199219][ T740] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 67.199548][ T740] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 67.199980][ T740] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 67.200304][ T740] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 67.200631][ T740] ? __kernel_text_address (kernel/extable.c:79) 
[ 67.200978][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 67.201309][ T740] ? __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) 
[ 67.201629][ T740] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 67.202037][ T740] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 67.202364][ T740] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 67.202686][ T740] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 67.203017][ T740] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 67.203340][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 67.203664][ T740] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 67.203990][ T740] ? __create_object (mm/kmemleak.c:771) 
[ 67.204317][ T740] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 67.204639][ T740] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 67.204988][ T740] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 67.205396][ T740] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 67.205723][ T740] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 67.206056][ T740] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 67.206377][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 67.206720][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 67.207053][ T740] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 67.207381][ T740] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 67.207704][ T740] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 67.208034][ T740] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 67.208360][ T740] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 67.208684][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 67.209038][ T740] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 67.209365][ T740] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 67.209688][ T740] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 67.210035][ T740] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 67.210352][ T740] ? 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) 
[ 67.210674][ T740] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 67.211008][ T740] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 67.211326][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 67.211653][ T740] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 67.212023][ T740] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 67.212352][ T740] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 67.212684][ T740] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 67.213031][ T740] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 67.213351][ T740] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 67.213805][ T740] ___sys_sendmsg (net/socket.c:2670) 
[ 67.214135][ T740] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 67.214476][ T740] ? __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) 
[ 67.214922][ T740] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 67.215247][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 67.215568][ T740] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 67.215922][ T740] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 67.216283][ T740] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 67.216617][ T740] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 67.216983][ T740] __sys_sendmsg (net/socket.c:2700) 
[ 67.217314][ T740] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 67.217729][ T740] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 67.218103][ T740] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 67.218450][ T740] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 67.218799][ T740] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   67.219224][  T740] RIP: 0033:0x7f2e7c4d11e7
[ 67.219574][ T740] 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)
[   67.220757][  T740] RSP: 002b:00007ffebc85bca8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   67.221282][  T740] RAX: ffffffffffffffda RBX: 00007ffebc85c3d0 RCX: 00007f2e7c4d11e7
[   67.221796][  T740] RDX: 0000000000000000 RSI: 00007ffebc85bd10 RDI: 0000000000000005
[   67.222299][  T740] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000078
[   67.222829][  T740] R10: 00007f2e7c3ceee8 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