======================================
| [   19.172835][  T305] veth1: entered promiscuous mode
| [   19.175069][  T305] ------------[ cut here ]------------
| [ 19.175416][ T305] WARNING: CPU: 3 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) 
| [   19.176971][  T305] Modules linked in: bridge stp llc 8021q vrf veth
[   19.178020][  T305] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.178433][ 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) 
[ 19.178764][ 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
[   19.179889][  T305] RSP: 0018:ffffc90000616ef0 EFLAGS: 00010246
[   19.180284][  T305] RAX: 0000000000000000 RBX: ffff88800ced2000 RCX: 0000000000000001
[   19.180774][  T305] RDX: 0000000000000000 RSI: ffffffffb6e9b941 RDI: ffffffffb66555e0
[   19.181236][  T305] RBP: ffffc90000616fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.181721][  T305] R10: ffffc90000617010 R11: ffffffffb7ca8918 R12: 1ffff920000c2de2
[   19.182182][  T305] R13: 00000000000005dc R14: ffffc90000617010 R15: ffff88800ced2f08
[   19.182804][  T305] FS:  00007fddb4150800(0000) GS:ffff88807d437000(0000) knlGS:0000000000000000
[   19.183345][  T305] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.183751][  T305] CR2: 00000000004e5aa8 CR3: 00000000090b9002 CR4: 0000000000772ef0
[   19.184220][  T305] PKRU: 55555554
[   19.184463][  T305] Call Trace:
[   19.184719][  T305]  <TASK>
[ 19.184885][ T305] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.185201][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.185547][ T305] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.185862][ T305] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.186256][ T305] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.186589][ T305] netif_set_mtu (net/core/dev.c:9652) 
[ 19.186907][ T305] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.187224][ T305] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.187671][ T305] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.187918][ T305] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.188341][ T305] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.188721][ T305] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.189035][ T305] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.189344][ T305] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.189751][ T305] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.190070][ T305] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.190374][ T305] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.190721][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.191030][ 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) 
[ 19.191336][ T305] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.191735][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.192045][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.192354][ T305] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.192670][ T305] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.192986][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.193291][ T305] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.193593][ T305] ? __create_object (mm/kmemleak.c:771) 
[ 19.193931][ T305] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.194238][ T305] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.194558][ T305] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.194956][ T305] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.195270][ T305] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.195580][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.195904][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.196216][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.196535][ T305] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.196861][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.197174][ T305] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.197483][ T305] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.197810][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.198123][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.198432][ T305] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.198758][ T305] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.199082][ T305] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.199405][ T305] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.199723][ 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) 
[ 19.200047][ T305] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.200356][ T305] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.200663][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.200997][ T305] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.201310][ T305] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.201624][ T305] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.201968][ T305] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.202290][ T305] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.202596][ T305] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.203021][ T305] ___sys_sendmsg (net/socket.c:2670) 
[ 19.203336][ T305] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.203650][ 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) 
[ 19.204063][ T305] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.204374][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.204682][ T305] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.205015][ T305] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.205326][ 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) 
[ 19.205640][ T305] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.205962][ T305] __sys_sendmsg (net/socket.c:2700) 
[ 19.206290][ T305] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.206681][ T305] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.207007][ T305] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.207330][ T305] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.207638][ T305] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.208031][  T305] RIP: 0033:0x7fddb431d1e7
[ 19.208363][ 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)
[   19.209478][  T305] RSP: 002b:00007ffc66758fa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.209969][  T305] RAX: ffffffffffffffda RBX: 00007ffc667596d0 RCX: 00007fddb431d1e7
[   19.210448][  T305] RDX: 0000000000000000 RSI: 00007ffc66759010 RDI: 0000000000000005
[   19.210924][  T305] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.211401][  T305] R10: 0000000033455910 R11: 0000000000000246 R12: 0000000000000004
[   19.211877][  T305] R13: 00000000686e1d4b R14: 0000000000499600 R15: 0000000000000000
| [   19.338774][  T307] ------------[ cut here ]------------
| [ 19.339081][ T307] WARNING: CPU: 0 PID: 307 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) 
| [   19.339697][  T307] Modules linked in: bridge stp llc 8021q vrf veth
| [   19.340747][  T307] Tainted: [W]=WARN
[   19.340983][  T307] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 19.341368][ T307] 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) 
[ 19.341682][ T307] 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
[   19.342794][  T307] RSP: 0018:ffffc900005e6ef0 EFLAGS: 00010246
[   19.343179][  T307] RAX: 0000000000000000 RBX: ffff88800ced2000 RCX: 0000000000000001
[   19.343639][  T307] RDX: 0000000000000000 RSI: ffffffffb6e9b941 RDI: ffffffffb66555e0
[   19.344102][  T307] RBP: ffffc900005e6fe0 R08: 0000000000000000 R09: 0000000000000000
[   19.344567][  T307] R10: ffffc900005e7010 R11: ffffffffb7ca8918 R12: 1ffff920000bcde2
[   19.345030][  T307] R13: 00000000000005dc R14: ffffc900005e7010 R15: ffff88800ced2f08
[   19.345487][  T307] FS:  00007fd88110d800(0000) GS:ffff88807d2b7000(0000) knlGS:0000000000000000
[   19.346057][  T307] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   19.346460][  T307] CR2: 00000000004e5ab0 CR3: 000000000c1d9004 CR4: 0000000000772ef0
[   19.346928][  T307] PKRU: 55555554
[   19.347157][  T307] Call Trace:
[   19.347388][  T307]  <TASK>
[ 19.347548][ T307] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 19.347864][ T307] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.348177][ T307] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 19.348485][ T307] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 19.349083][ T307] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 19.349394][ T307] netif_set_mtu (net/core/dev.c:9652) 
[ 19.349876][ T307] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 19.350195][ T307] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 19.350623][ T307] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 19.351004][ T307] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 19.351433][ T307] br_add_if (net/bridge/br_if.c:697) bridge 
[ 19.352002][ T307] do_set_master (net/core/rtnetlink.c:2948) 
[ 19.352311][ T307] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 19.352618][ T307] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 19.353245][ T307] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 19.353554][ T307] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 19.354034][ T307] ? __kernel_text_address (kernel/extable.c:79) 
[ 19.354344][ T307] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.354654][ T307] ? __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) 
[ 19.355078][ T307] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 19.355460][ T307] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.355782][ T307] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.356093][ T307] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 19.356398][ T307] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 19.356721][ T307] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.357029][ T307] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 19.357332][ T307] ? __create_object (mm/kmemleak.c:771) 
[ 19.357640][ T307] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 19.357953][ T307] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 19.358266][ T307] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 19.358648][ T307] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 19.358984][ T307] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 19.359300][ T307] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.359608][ T307] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.359931][ T307] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.360244][ T307] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 19.360548][ T307] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.360864][ T307] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 19.361168][ T307] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 19.361476][ T307] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.361793][ T307] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.362107][ T307] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 19.362417][ T307] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 19.362732][ T307] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 19.363049][ T307] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 19.363353][ T307] ? 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) 
[ 19.363663][ T307] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 19.363979][ T307] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 19.364309][ T307] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.364629][ T307] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 19.364949][ T307] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 19.365257][ T307] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 19.365570][ T307] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 19.365888][ T307] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 19.366193][ T307] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 19.366603][ T307] ___sys_sendmsg (net/socket.c:2670) 
[ 19.366915][ T307] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 19.367226][ T307] ? __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) 
[ 19.367612][ T307] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 19.367932][ T307] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.368244][ T307] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 19.368555][ T307] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 19.368868][ T307] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 19.369176][ T307] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 19.369493][ T307] __sys_sendmsg (net/socket.c:2700) 
[ 19.369808][ T307] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 19.370198][ T307] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 19.370518][ T307] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 19.370841][ T307] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 19.371149][ T307] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   19.371525][  T307] RIP: 0033:0x7fd8812da1e7
[ 19.371862][ T307] 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)
[   19.372955][  T307] RSP: 002b:00007ffc1da86148 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   19.373733][  T307] RAX: ffffffffffffffda RBX: 00007ffc1da86870 RCX: 00007fd8812da1e7
[   19.374430][  T307] RDX: 0000000000000000 RSI: 00007ffc1da861b0 RDI: 0000000000000005
[   19.374898][  T307] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   19.375358][  T307] R10: 0000000037ad5910 R11: 0000000000000246 R12: 0000000000000004
[   19.375829][  T307] R13: 00000000686e1d4b R14: 0000000000499600 R15: 0000000000000000
| [   82.864725][  T594] ------------[ cut here ]------------
| [ 82.865067][ T594] WARNING: CPU: 0 PID: 594 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) 
| [   82.865714][  T594] Modules linked in: act_gact cls_flower sch_ingress bridge stp llc 8021q vrf veth
| [   82.868801][  T594] Tainted: [W]=WARN
[   82.869059][  T594] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 82.869468][ T594] 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) 
[ 82.870031][ T594] 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
[   82.871754][  T594] RSP: 0018:ffffc900010b6ef0 EFLAGS: 00010246
[   82.872170][  T594] RAX: 0000000000000000 RBX: ffff88800263a000 RCX: 0000000000000001
[   82.872661][  T594] RDX: 0000000000000000 RSI: ffffffffb6e9b941 RDI: ffffffffb66555e0
[   82.873149][  T594] RBP: ffffc900010b6fe0 R08: 0000000000000000 R09: 0000000000000000
[   82.873634][  T594] R10: ffffc900010b7010 R11: ffffffffb7ca8918 R12: 1ffff92000216de2
[   82.874125][  T594] R13: 00000000000005dc R14: ffffc900010b7010 R15: ffff88800263af08
[   82.874611][  T594] FS:  00007ff31d278800(0000) GS:ffff88807d2b7000(0000) knlGS:0000000000000000
[   82.875185][  T594] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   82.875601][  T594] CR2: 00000000004e5aa0 CR3: 000000000cfb2002 CR4: 0000000000772ef0
[   82.876094][  T594] PKRU: 55555554
[   82.876337][  T594] Call Trace:
[   82.876583][  T594]  <TASK>
[ 82.876758][ T594] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 82.877074][ T594] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 82.877395][ T594] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 82.877724][ T594] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 82.878120][ T594] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 82.878435][ T594] netif_set_mtu (net/core/dev.c:9652) 
[ 82.878760][ T594] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 82.879094][ T594] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 82.879542][ T594] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 82.879799][ T594] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 82.880248][ T594] br_add_if (net/bridge/br_if.c:697) bridge 
[ 82.880612][ T594] ? cycle_netdev (drivers/net/vrf.c:1055) vrf 
[ 82.880947][ T594] do_set_master (net/core/rtnetlink.c:2948) 
[ 82.881275][ T594] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 82.881598][ T594] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 82.882014][ T594] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 82.882354][ T594] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 82.882683][ T594] ? __kernel_text_address (kernel/extable.c:79) 
[ 82.883013][ T594] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 82.883338][ T594] ? __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) 
[ 82.883664][ T594] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 82.884071][ T594] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 82.884400][ T594] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 82.884734][ T594] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 82.885056][ T594] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 82.885377][ T594] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 82.885706][ T594] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 82.886032][ T594] ? __create_object (mm/kmemleak.c:771) 
[ 82.886372][ T594] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 82.886721][ T594] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 82.887049][ T594] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 82.887446][ T594] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 82.887785][ T594] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 82.888112][ T594] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 82.888434][ T594] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 82.888774][ T594] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 82.889105][ T594] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 82.889423][ T594] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 82.889772][ T594] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 82.890103][ T594] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 82.890424][ T594] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 82.890756][ T594] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 82.891079][ T594] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 82.891406][ T594] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 82.891734][ T594] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 82.892075][ T594] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 82.892396][ T594] ? 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) 
[ 82.892728][ T594] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 82.893055][ T594] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 82.893376][ T594] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 82.893709][ T594] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 82.894033][ T594] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 82.894362][ T594] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 82.894924][ T594] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 82.895260][ T594] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 82.895811][ T594] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 82.896239][ T594] ___sys_sendmsg (net/socket.c:2670) 
[ 82.896810][ T594] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 82.897589][ T594] ? __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) 
[ 82.898021][ T594] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 82.898349][ T594] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 82.898676][ T594] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 82.899005][ T594] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 82.899326][ T594] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 82.899888][ T594] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 82.900219][ T594] __sys_sendmsg (net/socket.c:2700) 
[ 82.900548][ T594] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 82.900960][ T594] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 82.901295][ T594] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 82.901617][ T594] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 82.901950][ T594] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   82.902351][  T594] RIP: 0033:0x7ff31d4451e7
[ 82.902921][ T594] 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)
[   82.904090][  T594] RSP: 002b:00007ffcc2a2c4b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   82.904593][  T594] RAX: ffffffffffffffda RBX: 00007ffcc2a2cbe0 RCX: 00007ff31d4451e7
[   82.905086][  T594] RDX: 0000000000000000 RSI: 00007ffcc2a2c520 RDI: 0000000000000005
[   82.905578][  T594] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   82.906076][  T594] R10: 000000000bc04910 R11: 0000000000000246 R12: 0000000000000004


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