======================================
| [   19.617885][  T312] veth1: entered promiscuous mode
| [   19.619985][  T312] ------------[ cut here ]------------
| [ 19.620318][ T312] WARNING: CPU: 0 PID: 312 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) 
| [   19.620939][  T312] Modules linked in: bridge stp llc 8021q vrf veth
[   19.622041][  T312] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.622461][ T312] 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) 
[ 19.622798][ T312] 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
[   19.624025][  T312] RSP: 0018:ffffc90000596ef0 EFLAGS: 00010246
[   19.624440][  T312] RAX: 0000000000000000 RBX: ffff88800ed22000 RCX: 0000000000000001
[   19.624926][  T312] RDX: 0000000000000000 RSI: ffffffffb3a9b941 RDI: ffffffffb32555e0
[   19.625532][  T312] RBP: ffffc90000596fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.626016][  T312] R10: ffffc90000597010 R11: ffffffffb48a8918 R12: 1ffff920000b2de2
[   19.626511][  T312] R13: 00000000000005dc R14: ffffc90000597010 R15: ffff88800ed22f08
[   19.626997][  T312] FS:  00007f890c3cd800(0000) GS:ffff8880806b7000(0000) knlGS:0000000000000000
[   19.627564][  T312] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.628005][  T312] CR2: 00000000004e5aa8 CR3: 0000000004bdf003 CR4: 0000000000772ef0
[   19.628498][  T312] PKRU: 55555554
[   19.628743][  T312] Call Trace:
[   19.628986][  T312]  <TASK>
[ 19.629163][ T312] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.629491][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.629814][ T312] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.630143][ T312] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.630546][ T312] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.630874][ T312] netif_set_mtu (net/core/dev.c:9652) 
[ 19.631219][ T312] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.631552][ T312] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.631998][ T312] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.632247][ T312] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.632691][ T312] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.633060][ T312] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.633395][ T312] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.633744][ T312] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.634161][ T312] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.634486][ T312] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.634810][ T312] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.635158][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.635487][ T312] ? __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) 
[ 19.635810][ T312] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.636214][ T312] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.636531][ T312] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.636849][ T312] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.637182][ T312] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.637507][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.637835][ T312] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.638168][ T312] ? __create_object (mm/kmemleak.c:771) 
[ 19.638500][ T312] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.638827][ T312] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.639163][ T312] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.639563][ T312] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.639893][ T312] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.640247][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.640573][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.640919][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.641263][ T312] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.641586][ T312] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.641910][ T312] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.642248][ T312] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.642576][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.642905][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.643239][ T312] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.643565][ T312] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.643897][ T312] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.644242][ T312] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.644571][ T312] ? 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) 
[ 19.644896][ T312] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.645232][ T312] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.645554][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.645886][ T312] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.646228][ T312] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.646555][ T312] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.646889][ T312] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.647233][ T312] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.647559][ T312] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.647971][ T312] ___sys_sendmsg (net/socket.c:2670) 
[ 19.648307][ T312] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.648655][ T312] ? __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) 
[ 19.649063][ T312] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.649398][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.649725][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.650050][ T312] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.650381][ T312] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.650713][ T312] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.651060][ T312] __sys_sendmsg (net/socket.c:2700) 
[ 19.651383][ T312] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.651778][ T312] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.652121][ T312] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.652447][ T312] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.652778][ T312] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.653189][  T312] RIP: 0033:0x7f890c59a1e7
[ 19.653529][ T312] 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)
[   19.654709][  T312] RSP: 002b:00007ffd5b67fb58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.655244][  T312] RAX: ffffffffffffffda RBX: 00007ffd5b680280 RCX: 00007f890c59a1e7
[   19.655738][  T312] RDX: 0000000000000000 RSI: 00007ffd5b67fbc0 RDI: 0000000000000005
[   19.656233][  T312] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.656976][  T312] R10: 000000003abbc910 R11: 0000000000000246 R12: 0000000000000004
[   19.657468][  T312] R13: 00000000686e4a37 R14: 0000000000499600 R15: 0000000000000000
| [   19.834325][  T314] ------------[ cut here ]------------
| [ 19.834664][ T314] WARNING: CPU: 2 PID: 314 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) 
| [   19.835440][  T314] Modules linked in: bridge stp llc 8021q vrf veth
| [   19.836525][  T314] Tainted: [W]=WARN
[   19.836788][  T314] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.837207][ T314] 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) 
[ 19.837546][ T314] 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
[   19.838706][  T314] RSP: 0018:ffffc90000586ef0 EFLAGS: 00010246
[   19.839125][  T314] RAX: 0000000000000000 RBX: ffff88800ed22000 RCX: 0000000000000001
[   19.839613][  T314] RDX: 0000000000000000 RSI: ffffffffb3a9b941 RDI: ffffffffb32555e0
[   19.840107][  T314] RBP: ffffc90000586fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.840600][  T314] R10: ffffc90000587010 R11: ffffffffb48a8918 R12: 1ffff920000b0de2
[   19.841111][  T314] R13: 00000000000005dc R14: ffffc90000587010 R15: ffff88800ed22f08
[   19.841597][  T314] FS:  00007f86dca62800(0000) GS:ffff8880807b7000(0000) knlGS:0000000000000000
[   19.842176][  T314] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.842591][  T314] CR2: 00000000004e5ab0 CR3: 000000000bbff004 CR4: 0000000000772ef0
[   19.843084][  T314] PKRU: 55555554
[   19.843348][  T314] Call Trace:
[   19.843600][  T314]  <TASK>
[ 19.843780][ T314] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.844123][ T314] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.844462][ T314] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.844797][ T314] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.845216][ T314] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.845553][ T314] netif_set_mtu (net/core/dev.c:9652) 
[ 19.845887][ T314] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.846256][ T314] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.846716][ T314] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.846974][ T314] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.847433][ T314] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.847817][ T314] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.848167][ T314] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.848505][ T314] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.848920][ T314] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.849262][ T314] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.849591][ T314] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.849926][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.850297][ T314] ? __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) 
[ 19.850640][ T314] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.851058][ T314] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.851405][ T314] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.851735][ T314] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.852067][ T314] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.852406][ T314] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.852740][ T314] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.853073][ T314] ? __create_object (mm/kmemleak.c:771) 
[ 19.853416][ T314] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.853748][ T314] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.854080][ T314] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.854500][ T314] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.854836][ T314] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.855182][ T314] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.855516][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.855855][ T314] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.856193][ T314] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.856520][ T314] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.856854][ T314] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.857190][ T314] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.857520][ T314] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.857851][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.858204][ T314] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.858536][ T314] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.858866][ T314] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.859213][ T314] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.859540][ T314] ? 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) 
[ 19.859870][ T314] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.860209][ T314] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.860541][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.860881][ T314] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.861224][ T314] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.861556][ T314] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.861893][ T314] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.862233][ T314] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.862565][ T314] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.862983][ T314] ___sys_sendmsg (net/socket.c:2670) 
[ 19.863329][ T314] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.863661][ T314] ? __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) 
[ 19.864073][ T314] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.864417][ T314] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.864751][ T314] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.865084][ T314] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.865427][ T314] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.865765][ T314] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.866115][ T314] __sys_sendmsg (net/socket.c:2700) 
[ 19.866451][ T314] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.866862][ T314] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.867220][ T314] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.867555][ T314] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.867888][ T314] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.868332][  T314] RIP: 0033:0x7f86dcc2f1e7
[ 19.868675][ T314] 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)
[   19.869842][  T314] RSP: 002b:00007ffc6fb20218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.870345][  T314] RAX: ffffffffffffffda RBX: 00007ffc6fb20940 RCX: 00007f86dcc2f1e7
[   19.870851][  T314] RDX: 0000000000000000 RSI: 00007ffc6fb20280 RDI: 0000000000000005
[   19.871363][  T314] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.871851][  T314] R10: 0000000038871910 R11: 0000000000000246 R12: 0000000000000004


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