======================================
| [   19.422065][  T297] veth1: entered promiscuous mode
| [   19.424553][  T297] ------------[ cut here ]------------
| [ 19.424923][ T297] WARNING: CPU: 3 PID: 297 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) 
| [   19.426248][  T297] Modules linked in: bridge stp llc vrf veth
[   19.427350][  T297] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.427762][ T297] 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) 
[ 19.428086][ T297] 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
[   19.429292][  T297] RSP: 0018:ffffc90000b46ef0 EFLAGS: 00010246
[   19.429801][  T297] RAX: 0000000000000000 RBX: ffff88800dd42000 RCX: 0000000000000001
[   19.430291][  T297] RDX: 0000000000000000 RSI: ffffffff8d89b941 RDI: ffffffff8d0555e0
[   19.430810][  T297] RBP: ffffc90000b46fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.431294][  T297] R10: ffffc90000b47010 R11: ffffffff8e6a8918 R12: 1ffff92000168de2
[   19.431823][  T297] R13: 00000000000005dc R14: ffffc90000b47010 R15: ffff88800dd42f08
[   19.432332][  T297] FS:  00007f97bbdf8800(0000) GS:ffff8880a6a37000(0000) knlGS:0000000000000000
[   19.432905][  T297] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.433408][  T297] CR2: 00000000004e5aa8 CR3: 000000000c128002 CR4: 0000000000772ef0
[   19.434143][  T297] PKRU: 55555554
[   19.434514][  T297] Call Trace:
[   19.434892][  T297]  <TASK>
[ 19.435145][ T297] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.435671][ T297] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.436253][ T297] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.436809][ T297] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.437492][ T297] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.438047][ T297] netif_set_mtu (net/core/dev.c:9652) 
[ 19.438597][ T297] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.439177][ T297] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.439930][ T297] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.440369][ T297] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.441130][ T297] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.441793][ T297] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.442335][ T297] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.442912][ T297] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.443596][ T297] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.444159][ T297] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.444724][ T297] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.445290][ T297] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.445855][ T297] ? __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) 
[ 19.446394][ T297] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.447090][ T297] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.447632][ T297] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.448191][ T297] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.448740][ T297] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.449299][ T297] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.449854][ T297] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.450402][ T297] ? __create_object (mm/kmemleak.c:771) 
[ 19.450953][ T297] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.451524][ T297] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.452079][ T297] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.452796][ T297] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.453342][ T297] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.453907][ T297] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.454257][ T297] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.454587][ T297] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.454928][ T297] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.455233][ T297] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.455687][ T297] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.456247][ T297] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.456762][ T297] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.457078][ T297] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.457391][ T297] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.457725][ T297] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.458038][ T297] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.458392][ T297] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.458727][ T297] ? 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) 
[ 19.459047][ T297] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.459397][ T297] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.459954][ T297] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.460512][ T297] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.461078][ T297] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.461567][ T297] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.462065][ T297] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.462547][ T297] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.463037][ T297] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.463693][ T297] ___sys_sendmsg (net/socket.c:2670) 
[ 19.464246][ T297] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.464805][ T297] ? __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) 
[ 19.465489][ T297] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.466026][ T297] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.466574][ T297] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.467171][ T297] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.467736][ T297] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.468276][ T297] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.468868][ T297] __sys_sendmsg (net/socket.c:2700) 
[ 19.469401][ T297] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.470095][ T297] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.470419][ T297] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.471048][ T297] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.471374][ T297] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.471793][  T297] RIP: 0033:0x7f97bbfc51e7
[ 19.472129][ T297] 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)
[   19.473529][  T297] RSP: 002b:00007ffdad30d668 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.474267][  T297] RAX: ffffffffffffffda RBX: 00007ffdad30dd90 RCX: 00007f97bbfc51e7
[   19.474796][  T297] RDX: 0000000000000000 RSI: 00007ffdad30d6d0 RDI: 0000000000000005
[   19.475266][  T297] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.475995][  T297] R10: 0000000015777910 R11: 0000000000000246 R12: 0000000000000004
[   19.476484][  T297] R13: 00000000686e4433 R14: 0000000000499600 R15: 0000000000000000
| [   19.621773][  T299] ------------[ cut here ]------------
| [ 19.622109][ T299] WARNING: CPU: 2 PID: 299 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) 
| [   19.622764][  T299] Modules linked in: bridge stp llc vrf veth
| [   19.623823][  T299] Tainted: [W]=WARN
[   19.624072][  T299] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.624466][ T299] 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) 
[ 19.624806][ T299] 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
[   19.625908][  T299] RSP: 0018:ffffc90000866ef0 EFLAGS: 00010246
[   19.626312][  T299] RAX: 0000000000000000 RBX: ffff88800dd42000 RCX: 0000000000000001
[   19.626790][  T299] RDX: 0000000000000000 RSI: ffffffff8d89b941 RDI: ffffffff8d0555e0
[   19.627261][  T299] RBP: ffffc90000866fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.627739][  T299] R10: ffffc90000867010 R11: ffffffff8e6a8918 R12: 1ffff9200010cde2
[   19.628204][  T299] R13: 00000000000005dc R14: ffffc90000867010 R15: ffff88800dd42f08
[   19.628672][  T299] FS:  00007f0a8295f800(0000) GS:ffff8880a69b7000(0000) knlGS:0000000000000000
[   19.629370][  T299] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.629918][  T299] CR2: 00000000004e5ab0 CR3: 0000000004df2002 CR4: 0000000000772ef0
[   19.630434][  T299] PKRU: 55555554
[   19.630678][  T299] Call Trace:
[   19.630931][  T299]  <TASK>
[ 19.631116][ T299] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.631436][ T299] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.631771][ T299] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.632090][ T299] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.632480][ T299] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.632811][ T299] netif_set_mtu (net/core/dev.c:9652) 
[ 19.633126][ T299] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.633453][ T299] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.633902][ T299] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.634147][ T299] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.634581][ T299] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.634960][ T299] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.635284][ T299] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.635603][ T299] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.636056][ T299] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.636373][ T299] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.636691][ T299] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.637054][ T299] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.637373][ T299] ? __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) 
[ 19.637686][ T299] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.638093][ T299] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.638411][ T299] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.638732][ T299] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.639052][ T299] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.639370][ T299] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.639683][ T299] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.640006][ T299] ? __create_object (mm/kmemleak.c:771) 
[ 19.640324][ T299] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.640642][ T299] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.640965][ T299] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.641369][ T299] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.641692][ T299] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.642024][ T299] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.642343][ T299] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.642664][ T299] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.642989][ T299] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.643304][ T299] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.643621][ T299] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.643944][ T299] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.644269][ T299] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.644592][ T299] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.644922][ T299] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.645240][ T299] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.645556][ T299] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.645896][ T299] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.646217][ T299] ? 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) 
[ 19.646542][ T299] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.646871][ T299] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.647191][ T299] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.647515][ T299] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.647843][ T299] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.648161][ T299] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.648482][ T299] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.648820][ T299] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.649165][ T299] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.649569][ T299] ___sys_sendmsg (net/socket.c:2670) 
[ 19.649893][ T299] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.650211][ T299] ? __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) 
[ 19.650601][ T299] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.650931][ T299] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.651271][ T299] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.651595][ T299] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.651919][ T299] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.652237][ T299] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.652560][ T299] __sys_sendmsg (net/socket.c:2700) 
[ 19.652886][ T299] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.653276][ T299] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.653613][ T299] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.653972][ T299] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.654309][ T299] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.654732][  T299] RIP: 0033:0x7f0a82b2c1e7
[ 19.655082][ T299] 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)
[   19.656246][  T299] RSP: 002b:00007ffd9b6024b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.656757][  T299] RAX: ffffffffffffffda RBX: 00007ffd9b602be0 RCX: 00007f0a82b2c1e7
[   19.657252][  T299] RDX: 0000000000000000 RSI: 00007ffd9b602520 RDI: 0000000000000005
[   19.657754][  T299] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.658270][  T299] R10: 000000000c395910 R11: 0000000000000246 R12: 0000000000000004


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