======================================
| [   19.614838][  T303] veth1: entered promiscuous mode
| [   19.617603][  T303] ------------[ cut here ]------------
| [ 19.617932][ T303] WARNING: CPU: 0 PID: 303 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) 
| [   19.618616][  T303] Modules linked in: bridge stp llc 8021q vrf veth
[   19.619914][  T303] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.620464][ T303] 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) 
[ 19.620799][ T303] 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
[   19.622071][  T303] RSP: 0018:ffffc900005d6ef0 EFLAGS: 00010246
[   19.622721][  T303] RAX: 0000000000000000 RBX: ffff88800fae2000 RCX: 0000000000000001
[   19.623440][  T303] RDX: 0000000000000000 RSI: ffffffff9d29b939 RDI: ffffffff9ca555e0
[   19.623919][  T303] RBP: ffffc900005d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.624570][  T303] R10: ffffc900005d7010 R11: ffffffff9e0a8918 R12: 1ffff920000bade2
[   19.625048][  T303] R13: 00000000000005dc R14: ffffc900005d7010 R15: ffff88800fae2f08
[   19.625621][  T303] FS:  00007fb6de2a6800(0000) GS:ffff888096eb7000(0000) knlGS:0000000000000000
[   19.626184][  T303] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.626607][  T303] CR2: 00000000004e5aa8 CR3: 000000000e482002 CR4: 0000000000772ef0
[   19.627108][  T303] PKRU: 55555554
[   19.627358][  T303] Call Trace:
[   19.627597][  T303]  <TASK>
[ 19.627761][ T303] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.628096][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.628438][ T303] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.628748][ T303] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.629170][ T303] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.629493][ T303] netif_set_mtu (net/core/dev.c:9652) 
[ 19.629815][ T303] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.630153][ T303] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.630771][ T303] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.631015][ T303] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.631462][ T303] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.631830][ T303] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 19.632165][ T303] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.632483][ T303] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.632882][ T303] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.633212][ T303] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.633527][ T303] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.633858][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.634183][ T303] ? __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) 
[ 19.634501][ T303] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.634886][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.635212][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.635519][ T303] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.635838][ T303] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.636176][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.636496][ T303] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.636813][ T303] ? __create_object (mm/kmemleak.c:771) 
[ 19.637148][ T303] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.637462][ T303] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.637784][ T303] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.638178][ T303] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.638498][ T303] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.638815][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.639135][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.639460][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.639769][ T303] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.640081][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.640411][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.640717][ T303] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.641030][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.641357][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.641685][ T303] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.642006][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.642332][ T303] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.642663][ T303] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.642975][ T303] ? 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) 
[ 19.643304][ T303] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.643623][ T303] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.643942][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.644269][ T303] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.644585][ T303] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.644897][ T303] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.645243][ T303] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.645580][ T303] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.645891][ T303] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.646308][ T303] ___sys_sendmsg (net/socket.c:2670) 
[ 19.646622][ T303] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.646933][ T303] ? __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) 
[ 19.647331][ T303] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.647650][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.647968][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.648298][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.648616][ T303] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.648941][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.649267][ T303] __sys_sendmsg (net/socket.c:2700) 
[ 19.649582][ T303] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.649971][ T303] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.650307][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.650629][ T303] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.650955][ T303] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.651359][  T303] RIP: 0033:0x7fb6de4731e7
[ 19.651697][ T303] 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)
[   19.652826][  T303] RSP: 002b:00007ffe02f5b1d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.653323][  T303] RAX: ffffffffffffffda RBX: 00007ffe02f5b900 RCX: 00007fb6de4731e7
[   19.653801][  T303] RDX: 0000000000000000 RSI: 00007ffe02f5b240 RDI: 0000000000000005
[   19.654278][  T303] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.654755][  T303] R10: 0000000007896910 R11: 0000000000000246 R12: 0000000000000004
[   19.655243][  T303] R13: 00000000686e7077 R14: 0000000000499600 R15: 0000000000000000
| [   19.805166][  T305] ------------[ cut here ]------------
| [ 19.805499][ 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) 
| [   19.806137][  T305] Modules linked in: bridge stp llc 8021q vrf veth
| [   19.807195][  T305] Tainted: [W]=WARN
[   19.807455][  T305] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.807875][ 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) 
[ 19.808232][ T305] 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
[   19.809366][  T305] RSP: 0018:ffffc900005c6ef0 EFLAGS: 00010246
[   19.809767][  T305] RAX: 0000000000000000 RBX: ffff88800fae2000 RCX: 0000000000000001
[   19.810249][  T305] RDX: 0000000000000000 RSI: ffffffff9d29b939 RDI: ffffffff9ca555e0
[   19.810725][  T305] RBP: ffffc900005c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.811205][  T305] R10: ffffc900005c7010 R11: ffffffff9e0a8918 R12: 1ffff920000b8de2
[   19.811674][  T305] R13: 00000000000005dc R14: ffffc900005c7010 R15: ffff88800fae2f08
[   19.812158][  T305] FS:  00007f995c857800(0000) GS:ffff888096fb7000(0000) knlGS:0000000000000000
[   19.812707][  T305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.813111][  T305] CR2: 00000000004e5ab0 CR3: 000000000e4a7002 CR4: 0000000000772ef0
[   19.813584][  T305] PKRU: 55555554
[   19.813822][  T305] Call Trace:
[   19.814062][  T305]  <TASK>
[ 19.814252][ T305] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.814575][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.814908][ T305] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.815236][ T305] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.815636][ T305] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.815956][ T305] netif_set_mtu (net/core/dev.c:9652) 
[ 19.816285][ T305] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.816619][ T305] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.817067][ T305] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.817323][ T305] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.817757][ T305] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.818131][ T305] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 19.818456][ T305] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.818777][ T305] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.819203][ T305] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.819522][ T305] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.819839][ T305] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.820172][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.820507][ 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) 
[ 19.820824][ T305] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.821230][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.821555][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.821869][ T305] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.822196][ T305] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.822517][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.822834][ T305] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.823168][ T305] ? __create_object (mm/kmemleak.c:771) 
[ 19.823489][ T305] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.823812][ T305] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.824139][ T305] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.824530][ T305] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.824851][ T305] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.825183][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.825503][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.825826][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.826151][ T305] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.826475][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.826791][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.827119][ T305] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.827437][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.827758][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.828077][ T305] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.828412][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.828732][ T305] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.829070][ T305] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.829397][ 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) 
[ 19.829716][ T305] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 19.830036][ T305] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.830363][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.830682][ T305] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.831003][ T305] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.831339][ T305] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.831668][ T305] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.831989][ T305] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.832314][ T305] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.832716][ T305] ___sys_sendmsg (net/socket.c:2670) 
[ 19.833029][ T305] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.833362][ 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) 
[ 19.833754][ T305] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.834073][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.834403][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.834726][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.835042][ 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) 
[ 19.835371][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.835695][ T305] __sys_sendmsg (net/socket.c:2700) 
[ 19.836013][ T305] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.836416][ T305] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.836746][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.837064][ T305] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.837398][ T305] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.837788][  T305] RIP: 0033:0x7f995ca241e7
[ 19.838126][ 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)
[   19.839265][  T305] RSP: 002b:00007ffc53a501c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.839738][  T305] RAX: ffffffffffffffda RBX: 00007ffc53a508f0 RCX: 00007f995ca241e7
[   19.840216][  T305] RDX: 0000000000000000 RSI: 00007ffc53a50230 RDI: 0000000000000005
[   19.840687][  T305] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.841167][  T305] R10: 00000000247aa910 R11: 0000000000000246 R12: 0000000000000004
[   19.841640][  T305] R13: 00000000686e7077 R14: 0000000000499600 R15: 0000000000000000
| [   83.917441][  T593] ------------[ cut here ]------------
| [ 83.917772][ T593] WARNING: CPU: 1 PID: 593 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) 
| [   83.918396][  T593] Modules linked in: act_gact cls_flower sch_ingress bridge stp llc 8021q vrf veth
| [   83.919609][  T593] Tainted: [W]=WARN
[   83.919849][  T593] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 83.920244][ T593] 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) 
[ 83.920564][ T593] 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
[   83.921662][  T593] RSP: 0018:ffffc900010c6ef0 EFLAGS: 00010246
[   83.922050][  T593] RAX: 0000000000000000 RBX: ffff8880091aa000 RCX: 0000000000000001
[   83.922516][  T593] RDX: 0000000000000000 RSI: ffffffff9d29b939 RDI: ffffffff9ca555e0
[   83.922974][  T593] RBP: ffffc900010c6fe0 R08: 0000000000000000 R09: 0000000000000000
[   83.923450][  T593] R10: ffffc900010c7010 R11: ffffffff9e0a8918 R12: 1ffff92000218de2
[   83.923926][  T593] R13: 00000000000005dc R14: ffffc900010c7010 R15: ffff8880091aaf08
[   83.924606][  T593] FS:  00007efc69bb9800(0000) GS:ffff888096f37000(0000) knlGS:0000000000000000
[   83.925353][  T593] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   83.925737][  T593] CR2: 00000000004e5aa0 CR3: 000000000e4d3001 CR4: 0000000000772ef0
[   83.926364][  T593] PKRU: 55555554
[   83.926608][  T593] Call Trace:
[   83.926837][  T593]  <TASK>
[ 83.926994][ T593] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 83.927486][ T593] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 83.927807][ T593] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 83.928263][ T593] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 83.928651][ T593] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 83.928970][ T593] netif_set_mtu (net/core/dev.c:9652) 
[ 83.929444][ T593] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 83.929763][ T593] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 83.930346][ T593] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 83.930582][ T593] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 83.930999][ T593] br_add_if (net/bridge/br_if.c:697) bridge 
[ 83.931505][ T593] ? cycle_netdev (drivers/net/vrf.c:1055) vrf 
[ 83.931822][ T593] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 83.932290][ T593] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 83.932601][ T593] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 83.932991][ T593] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 83.933328][ T593] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 83.933638][ T593] ? __kernel_text_address (kernel/extable.c:79) 
[ 83.933950][ T593] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 83.934268][ T593] ? __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) 
[ 83.934585][ T593] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 83.934963][ T593] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 83.935290][ T593] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 83.935603][ T593] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 83.935911][ T593] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 83.936229][ T593] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 83.936546][ T593] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 83.936858][ T593] ? __create_object (mm/kmemleak.c:771) 
[ 83.937180][ T593] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 83.937486][ T593] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 83.937790][ T593] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 83.938176][ T593] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 83.938487][ T593] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 83.938797][ T593] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 83.939128][ T593] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 83.939449][ T593] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 83.939755][ T593] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 83.940058][ T593] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 83.940376][ T593] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 83.940683][ T593] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 83.940991][ T593] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 83.941315][ T593] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 83.941639][ T593] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 83.941945][ T593] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 83.942260][ T593] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 83.942579][ T593] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 83.942881][ T593] ? 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) 
[ 83.943207][ T593] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 83.943524][ T593] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 83.943833][ T593] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 83.944153][ T593] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 83.944462][ T593] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 83.944768][ T593] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 83.945081][ T593] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 83.945401][ T593] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 83.945701][ T593] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 83.946107][ T593] ___sys_sendmsg (net/socket.c:2670) 
[ 83.946411][ T593] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 83.946715][ T593] ? __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) 
[ 83.947113][ T593] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 83.947423][ T593] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 83.947730][ T593] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 83.948040][ T593] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 83.948356][ T593] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 83.948667][ T593] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 83.948999][ T593] __sys_sendmsg (net/socket.c:2700) 
[ 83.949316][ T593] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 83.949696][ T593] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 83.950011][ T593] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 83.950334][ T593] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 83.950642][ T593] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   83.951027][  T593] RIP: 0033:0x7efc69d861e7
[ 83.951367][ T593] 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)
[   83.952462][  T593] RSP: 002b:00007ffe143e3a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   83.952929][  T593] RAX: ffffffffffffffda RBX: 00007ffe143e4190 RCX: 00007efc69d861e7
[   83.953405][  T593] RDX: 0000000000000000 RSI: 00007ffe143e3ad0 RDI: 0000000000000005
[   83.953864][  T593] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   83.954330][  T593] R10: 000000001ff62910 R11: 0000000000000246 R12: 0000000000000004


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