======================================
| # [   24.140731] veth1: entered promiscuous mode
| # [   24.144112] ------------[ cut here ]------------
| # [   24.144511] WARNING: CPU: 2 PID: 292 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) 
| # [   24.145171] Modules linked in: bridge stp llc veth
# [   24.146212] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# [   24.146847] 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) 
# [ 24.147215] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
# [   24.148423] RSP: 0018:ffffc900004f6ef0 EFLAGS: 00010246
# [   24.148854] RAX: 0000000000000000 RBX: ffff8880098aa000 RCX: 0000000000000001
# [   24.149870] RDX: 0000000000000000 RSI: ffffffffaba9f52e RDI: ffffffffab25a5a0
# [   24.150405] RBP: ffffc900004f6fe0 R08: 0000000000000000 R09: 0000000000000000
# [   24.150912] R10: ffffc900004f7010 R11: ffffffffabf798a0 R12: 1ffff9200009ede2
# [   24.151429] R13: 00000000000005dc R14: ffffc900004f7010 R15: ffff8880098aaf08
# [   24.151933] FS:  00007f6e81a73800(0000) GS:ffff8880887a7000(0000) knlGS:0000000000000000
# [   24.152557] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
# [   24.152990] CR2: 00000000004e5aa8 CR3: 000000000a621005 CR4: 0000000000772ef0
# [   24.153514] PKRU: 55555554
# [   24.153784] Call Trace:
# [   24.154046]  <TASK>
# [   24.154235] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
# [   24.154600] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.154954] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.155301] netif_set_mtu (net/core/dev.c:9652) 
# [   24.155668] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
# [   24.156026] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
# [   24.156287] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
# [   24.156783] br_add_if (net/bridge/br_if.c:697) bridge 
# [   24.157168] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
# [   24.157527] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
# [   24.157869] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
# [   24.158319] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
# [   24.158673] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
# [   24.159008] ? __kernel_text_address (kernel/extable.c:79) 
# [   24.159371] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.159718] ? __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) 
# [   24.160063] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
# [   24.160514] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
# [   24.160860] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
# [   24.161200] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
# [   24.161550] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
# [   24.161888] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.162226] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
# [   24.162591] ? __create_object (mm/kmemleak.c:771) 
# [   24.162935] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
# [   24.163281] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
# [   24.163637] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
# [   24.164054] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
# [   24.164421] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
# [   24.164764] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
# [   24.165102] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.165465] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.165809] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
# [   24.166143] ? __lock_release (kernel/locking/lockdep.c:5539) 
# [   24.166497] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
# [   24.166839] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
# [   24.167181] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
# [   24.167542] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.167896] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
# [   24.168240] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
# [   24.168613] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
# [   24.168966] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
# [   24.169306] ? 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) 
# [   24.169656] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
# [   24.170001] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
# [   24.170356] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
# [   24.170700] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
# [   24.171049] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
# [   24.171403] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
# [   24.171746] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
# [   24.172091] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
# [   24.172457] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
# [   24.172894] ___sys_sendmsg (net/socket.c:2670) 
# [   24.173232] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
# [   24.173873] ? __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) 
# [   24.174289] ? __pfx____sys_sendmsg (net/socket.c:2657) 
# [   24.174649] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.174988] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.175566] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.175900] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
# [   24.176234] ? __lock_release (kernel/locking/lockdep.c:5539) 
# [   24.176601] __sys_sendmsg (net/socket.c:2700) 
# [   24.176969] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
# [   24.177416] ? __pfx___sys_sendmsg (net/socket.c:2685) 
# [   24.177765] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
# [   24.178110] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
# [   24.178692] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
# [   24.179103] RIP: 0033:0x7f6e81c401e7
# [ 24.179471] 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)
# [   24.180917] RSP: 002b:00007ffffc5111b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
# [   24.181450] RAX: ffffffffffffffda RBX: 00007ffffc5118f0 RCX: 00007f6e81c401e7
# [   24.181957] RDX: 0000000000000000 RSI: 00007ffffc511220 RDI: 0000000000000005
# [   24.182473] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
# [   24.183197] R10: 000000000acb8910 R11: 0000000000000246 R12: 0000000000000003
# [   24.183711] R13: 00000000686e740b R14: 0000000000499600 R15: 0000000000000000
| # [   24.347623] ------------[ cut here ]------------
| # [   24.347998] WARNING: CPU: 2 PID: 293 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) 
| # [   24.349245] Modules linked in: bridge stp llc veth
| # [   24.350287] Tainted: [W]=WARN
# [   24.350563] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# [   24.350983] 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) 
# [ 24.351331] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
# [   24.352529] RSP: 0018:ffffc900004d6ef0 EFLAGS: 00010246
# [   24.352951] RAX: 0000000000000000 RBX: ffff8880098aa000 RCX: 0000000000000001
# [   24.353457] RDX: 0000000000000000 RSI: ffffffffaba9f52e RDI: ffffffffab25a5a0
# [   24.353951] RBP: ffffc900004d6fe0 R08: 0000000000000000 R09: 0000000000000000
# [   24.354455] R10: ffffc900004d7010 R11: ffffffffabf798a0 R12: 1ffff9200009ade2
# [   24.355054] R13: 00000000000005dc R14: ffffc900004d7010 R15: ffff8880098aaf08
# [   24.355580] FS:  00007ff38aceb800(0000) GS:ffff8880887a7000(0000) knlGS:0000000000000000
# [   24.356157] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
# [   24.356593] CR2: 00000000004e5ab0 CR3: 000000000c2f7006 CR4: 0000000000772ef0
# [   24.357094] PKRU: 55555554
# [   24.357366] Call Trace:
# [   24.357623]  <TASK>
# [   24.357808] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
# [   24.358166] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.358530] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.358873] netif_set_mtu (net/core/dev.c:9652) 
# [   24.359224] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
# [   24.359605] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
# [   24.359868] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
# [   24.360347] br_add_if (net/bridge/br_if.c:697) bridge 
# [   24.360732] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
# [   24.361077] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
# [   24.361434] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
# [   24.361865] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
# [   24.362203] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
# [   24.362549] ? __kernel_text_address (kernel/extable.c:79) 
# [   24.362898] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.363240] ? __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) 
# [   24.363603] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
# [   24.364023] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
# [   24.364386] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
# [   24.364723] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
# [   24.365057] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
# [   24.365411] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.365750] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
# [   24.366081] ? __create_object (mm/kmemleak.c:771) 
# [   24.366432] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
# [   24.366774] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
# [   24.367118] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
# [   24.367556] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
# [   24.367909] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
# [   24.368260] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
# [   24.368607] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.368982] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.369326] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
# [   24.369680] ? __lock_release (kernel/locking/lockdep.c:5539) 
# [   24.370021] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
# [   24.370368] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
# [   24.370709] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
# [   24.371047] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.371410] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
# [   24.371749] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
# [   24.372087] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
# [   24.372450] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
# [   24.372788] ? 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) 
# [   24.373127] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
# [   24.373481] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
# [   24.373824] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
# [   24.374164] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
# [   24.374513] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
# [   24.374859] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
# [   24.375198] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
# [   24.375563] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
# [   24.375904] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
# [   24.376351] ___sys_sendmsg (net/socket.c:2670) 
# [   24.376690] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
# [   24.377026] ? __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) 
# [   24.377456] ? __pfx____sys_sendmsg (net/socket.c:2657) 
# [   24.377796] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.378150] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.378503] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.378839] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
# [   24.379176] ? __lock_release (kernel/locking/lockdep.c:5539) 
# [   24.379542] __sys_sendmsg (net/socket.c:2700) 
# [   24.379881] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
# [   24.380293] ? __pfx___sys_sendmsg (net/socket.c:2685) 
# [   24.380652] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
# [   24.380993] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
# [   24.381349] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
# [   24.381766] RIP: 0033:0x7ff38aeb81e7
# [ 24.382116] 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)
# [   24.383294] RSP: 002b:00007fff48ff1508 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
# [   24.383817] RAX: ffffffffffffffda RBX: 00007fff48ff1c40 RCX: 00007ff38aeb81e7
# [   24.384316] RDX: 0000000000000000 RSI: 00007fff48ff1570 RDI: 0000000000000005
# [   24.384827] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
# [   24.385318] R10: 00000000163af910 R11: 0000000000000246 R12: 0000000000000003
# [   24.385825] R13: 00000000686e740c R14: 0000000000499600 R15: 0000000000000000
| # [   24.550632] ------------[ cut here ]------------
| # [   24.550977] WARNING: CPU: 2 PID: 294 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) 
| # [   24.551654] Modules linked in: bridge stp llc veth
| # [   24.552656] Tainted: [W]=WARN
# [   24.552907] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# [   24.553303] 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) 
# [ 24.553657] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
# [   24.554811] RSP: 0018:ffffc9000060eef0 EFLAGS: 00010246
# [   24.555216] RAX: 0000000000000000 RBX: ffff8880098aa000 RCX: 0000000000000001
# [   24.555734] RDX: 0000000000000000 RSI: ffffffffaba9f52e RDI: ffffffffab25a5a0
# [   24.556217] RBP: ffffc9000060efe0 R08: 0000000000000000 R09: 0000000000000000
# [   24.556702] R10: ffffc9000060f010 R11: ffffffffac8b19b8 R12: 1ffff920000c1de2
# [   24.557179] R13: 00000000000005dc R14: ffffc9000060f010 R15: ffff8880098aaf08
# [   24.557667] FS:  00007f7901b10800(0000) GS:ffff8880887a7000(0000) knlGS:0000000000000000
# [   24.558239] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
# [   24.558657] CR2: 00000000004e5ab8 CR3: 000000000b7ec001 CR4: 0000000000772ef0
# [   24.559144] PKRU: 55555554
# [   24.559414] Call Trace:
# [   24.559663]  <TASK>
# [   24.559837] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
# [   24.560174] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.560526] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
# [   24.560880] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
# [   24.561310] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
# [   24.561656] netif_set_mtu (net/core/dev.c:9652) 
# [   24.561982] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
# [   24.562315] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
# [   24.562783] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
# [   24.563033] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
# [   24.563507] br_add_if (net/bridge/br_if.c:697) bridge 
# [   24.563872] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
# [   24.564205] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
# [   24.564540] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
# [   24.564943] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
# [   24.565273] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
# [   24.565608] ? __kernel_text_address (kernel/extable.c:79) 
# [   24.565937] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.566262] ? __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) 
# [   24.566596] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
# [   24.566999] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
# [   24.567323] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
# [   24.567672] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
# [   24.568007] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
# [   24.568344] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.568665] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
# [   24.568984] ? __create_object (mm/kmemleak.c:771) 
# [   24.569309] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
# [   24.569651] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
# [   24.569978] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
# [   24.570391] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
# [   24.570722] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
# [   24.571054] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
# [   24.571399] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.571734] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.572057] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
# [   24.572384] ? __lock_release (kernel/locking/lockdep.c:5539) 
# [   24.572713] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
# [   24.573036] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
# [   24.573366] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
# [   24.573695] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.574021] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
# [   24.574356] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
# [   24.574679] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
# [   24.575017] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
# [   24.575362] ? 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) 
# [   24.575700] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
# [   24.576022] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
# [   24.576363] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
# [   24.576691] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
# [   24.577012] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
# [   24.577347] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
# [   24.577681] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
# [   24.578018] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
# [   24.578354] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
# [   24.578763] ___sys_sendmsg (net/socket.c:2670) 
# [   24.579082] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
# [   24.579430] ? __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) 
# [   24.579839] ? __pfx____sys_sendmsg (net/socket.c:2657) 
# [   24.580166] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.580502] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   24.580829] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   24.581149] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
# [   24.581482] ? __lock_release (kernel/locking/lockdep.c:5539) 
# [   24.581816] __sys_sendmsg (net/socket.c:2700) 
# [   24.582136] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
# [   24.582548] ? __pfx___sys_sendmsg (net/socket.c:2685) 
# [   24.582882] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
# [   24.583214] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
# [   24.583564] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
# [   24.583966] RIP: 0033:0x7f7901cdd1e7
# [ 24.584303] 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)
# [   24.585439] RSP: 002b:00007fffaf63f4c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
# [   24.585934] RAX: ffffffffffffffda RBX: 00007fffaf63fc00 RCX: 00007f7901cdd1e7
# [   24.586421] RDX: 0000000000000000 RSI: 00007fffaf63f530 RDI: 0000000000000005
# [   24.586905] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
# [   24.587405] R10: 00000000343ee910 R11: 0000000000000246 R12: 0000000000000003
# [   24.587896] R13: 00000000686e740c R14: 0000000000499600 R15: 0000000000000000
| # [   25.918483] ------------[ cut here ]------------
| # [   25.918815] WARNING: CPU: 3 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) 
| # [   25.920198] Modules linked in: macvlan bridge stp llc veth
| # [   25.921312] Tainted: [W]=WARN
# [   25.921557] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
# [   25.921962] 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) 
# [ 25.922294] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
# [   25.923416] RSP: 0018:ffffc90000686ef0 EFLAGS: 00010246
# [   25.923841] RAX: 0000000000000000 RBX: ffff8880098aa000 RCX: 0000000000000001
# [   25.924345] RDX: 0000000000000000 RSI: ffffffffaba9f52e RDI: ffffffffab25a5a0
# [   25.924875] RBP: ffffc90000686fe0 R08: 0000000000000000 R09: 0000000000000000
# [   25.925366] R10: ffffc90000687010 R11: ffffffffac8b19b8 R12: 1ffff920000d0de2
# [   25.925847] R13: 00000000000005dc R14: ffffc90000687010 R15: ffff8880098aaf08
# [   25.926315] FS:  00007fb948d93800(0000) GS:ffff888088827000(0000) knlGS:0000000000000000
# [   25.926870] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
# [   25.927260] CR2: 00000000004e5818 CR3: 0000000002916006 CR4: 0000000000772ef0
# [   25.927768] PKRU: 55555554
# [   25.928030] Call Trace:
# [   25.928267]  <TASK>
# [   25.928448] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
# [   25.928795] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   25.929117] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
# [   25.929437] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
# [   25.929827] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
# [   25.930143] netif_set_mtu (net/core/dev.c:9652) 
# [   25.930470] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
# [   25.930811] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
# [   25.931256] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
# [   25.931505] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
# [   25.931929] br_add_if (net/bridge/br_if.c:697) bridge 
# [   25.932283] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
# [   25.932658] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
# [   25.932991] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
# [   25.933400] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
# [   25.933718] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
# [   25.934037] ? __kernel_text_address (kernel/extable.c:79) 
# [   25.934364] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   25.934699] ? __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) 
# [   25.935013] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
# [   25.935447] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
# [   25.935770] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
# [   25.936083] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
# [   25.936410] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
# [   25.936772] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   25.937084] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
# [   25.937406] ? __create_object (mm/kmemleak.c:771) 
# [   25.937719] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
# [   25.938046] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
# [   25.938381] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
# [   25.938787] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
# [   25.939107] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
# [   25.939452] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
# [   25.939760] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   25.940077] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   25.940412] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
# [   25.940810] ? __lock_release (kernel/locking/lockdep.c:5539) 
# [   25.941123] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
# [   25.941453] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
# [   25.941773] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
# [   25.942097] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   25.942428] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
# [   25.942761] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
# [   25.943074] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
# [   25.943403] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
# [   25.943711] ? 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) 
# [   25.944026] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
# [   25.944356] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
# [   25.944727] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
# [   25.945046] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
# [   25.945377] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
# [   25.945697] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
# [   25.946029] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
# [   25.946359] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
# [   25.946688] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
# [   25.947087] ___sys_sendmsg (net/socket.c:2670) 
# [   25.947409] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
# [   25.947723] ? __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) 
# [   25.948143] ? __pfx____sys_sendmsg (net/socket.c:2657) 
# [   25.948472] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   25.948839] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
# [   25.949177] ? find_held_lock (kernel/locking/lockdep.c:5353) 
# [   25.949505] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
# [   25.949823] ? __lock_release (kernel/locking/lockdep.c:5539) 
# [   25.950155] __sys_sendmsg (net/socket.c:2700) 
# [   25.950495] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
# [   25.950891] ? __pfx___sys_sendmsg (net/socket.c:2685) 
# [   25.951220] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
# [   25.951563] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
# [   25.951886] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
# [   25.952270] RIP: 0033:0x7fb948f601e7
# [ 25.952645] 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)
# [   25.953788] RSP: 002b:00007ffc028d3548 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
# [   25.954259] RAX: ffffffffffffffda RBX: 00007ffc028d3c80 RCX: 00007fb948f601e7
# [   25.954746] RDX: 0000000000000000 RSI: 00007ffc028d35b0 RDI: 0000000000000005
# [   25.955214] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
# [   25.955681] R10: 000000001e906910 R11: 0000000000000246 R12: 0000000000000003
# [   25.956164] R13: 00000000686e740d R14: 0000000000499600 R15: 0000000000000000
| [   24.140731][  T292] veth1: entered promiscuous mode
| [   24.144112][  T292] ------------[ cut here ]------------
| [ 24.144511][ T292] WARNING: CPU: 2 PID: 292 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) 
| [   24.145171][  T292] Modules linked in: bridge stp llc veth
[   24.146212][  T292] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.146847][ T292] 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) 
[ 24.147215][ T292] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
[   24.148423][  T292] RSP: 0018:ffffc900004f6ef0 EFLAGS: 00010246
[   24.148854][  T292] RAX: 0000000000000000 RBX: ffff8880098aa000 RCX: 0000000000000001
[   24.149870][  T292] RDX: 0000000000000000 RSI: ffffffffaba9f52e RDI: ffffffffab25a5a0
[   24.150405][  T292] RBP: ffffc900004f6fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.150912][  T292] R10: ffffc900004f7010 R11: ffffffffabf798a0 R12: 1ffff9200009ede2
[   24.151429][  T292] R13: 00000000000005dc R14: ffffc900004f7010 R15: ffff8880098aaf08
[   24.151933][  T292] FS:  00007f6e81a73800(0000) GS:ffff8880887a7000(0000) knlGS:0000000000000000
[   24.152557][  T292] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.152990][  T292] CR2: 00000000004e5aa8 CR3: 000000000a621005 CR4: 0000000000772ef0
[   24.153514][  T292] PKRU: 55555554
[   24.153784][  T292] Call Trace:
[   24.154046][  T292]  <TASK>
[ 24.154235][ T292] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.154600][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.154954][ T292] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.155301][ T292] netif_set_mtu (net/core/dev.c:9652) 
[ 24.155668][ T292] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.156026][ T292] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.156287][ T292] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.156783][ T292] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.157168][ T292] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 24.157527][ T292] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.157869][ T292] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.158319][ T292] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.158673][ T292] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.159008][ T292] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.159371][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.159718][ T292] ? __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) 
[ 24.160063][ T292] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.160514][ T292] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.160860][ T292] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.161200][ T292] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.161550][ T292] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.161888][ T292] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.162226][ T292] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.162591][ T292] ? __create_object (mm/kmemleak.c:771) 
[ 24.162935][ T292] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.163281][ T292] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.163637][ T292] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.164054][ T292] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.164421][ T292] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.164764][ T292] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.165102][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.165465][ T292] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.165809][ T292] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.166143][ T292] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.166497][ T292] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.166839][ T292] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.167181][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.167542][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.167896][ T292] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.168240][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.168613][ T292] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.168966][ T292] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.169306][ T292] ? 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) 
[ 24.169656][ T292] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.170001][ T292] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.170356][ T292] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.170700][ T292] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.171049][ T292] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.171403][ T292] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 24.171746][ T292] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.172091][ T292] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.172457][ T292] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.172894][ T292] ___sys_sendmsg (net/socket.c:2670) 
[ 24.173232][ T292] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.173873][ T292] ? __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) 
[ 24.174289][ T292] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.174649][ T292] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.174988][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.175566][ T292] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.175900][ T292] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.176234][ T292] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.176601][ T292] __sys_sendmsg (net/socket.c:2700) 
[ 24.176969][ T292] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.177416][ T292] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.177765][ T292] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.178110][ T292] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.178692][ T292] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.179103][  T292] RIP: 0033:0x7f6e81c401e7
[ 24.179471][ T292] 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)
[   24.180917][  T292] RSP: 002b:00007ffffc5111b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.181450][  T292] RAX: ffffffffffffffda RBX: 00007ffffc5118f0 RCX: 00007f6e81c401e7
[   24.181957][  T292] RDX: 0000000000000000 RSI: 00007ffffc511220 RDI: 0000000000000005
[   24.182473][  T292] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   24.183197][  T292] R10: 000000000acb8910 R11: 0000000000000246 R12: 0000000000000003
[   24.183711][  T292] R13: 00000000686e740b R14: 0000000000499600 R15: 0000000000000000
| [   24.347623][  T293] ------------[ cut here ]------------
| [ 24.347998][ T293] WARNING: CPU: 2 PID: 293 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) 
| [   24.349245][  T293] Modules linked in: bridge stp llc veth
| [   24.350287][  T293] Tainted: [W]=WARN
[   24.350563][  T293] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.350983][ T293] 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) 
[ 24.351331][ T293] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
[   24.352529][  T293] RSP: 0018:ffffc900004d6ef0 EFLAGS: 00010246
[   24.352951][  T293] RAX: 0000000000000000 RBX: ffff8880098aa000 RCX: 0000000000000001
[   24.353457][  T293] RDX: 0000000000000000 RSI: ffffffffaba9f52e RDI: ffffffffab25a5a0
[   24.353951][  T293] RBP: ffffc900004d6fe0 R08: 0000000000000000 R09: 0000000000000000
[   24.354455][  T293] R10: ffffc900004d7010 R11: ffffffffabf798a0 R12: 1ffff9200009ade2
[   24.355054][  T293] R13: 00000000000005dc R14: ffffc900004d7010 R15: ffff8880098aaf08
[   24.355580][  T293] FS:  00007ff38aceb800(0000) GS:ffff8880887a7000(0000) knlGS:0000000000000000
[   24.356157][  T293] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.356593][  T293] CR2: 00000000004e5ab0 CR3: 000000000c2f7006 CR4: 0000000000772ef0
[   24.357094][  T293] PKRU: 55555554
[   24.357366][  T293] Call Trace:
[   24.357623][  T293]  <TASK>
[ 24.357808][ T293] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.358166][ T293] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.358530][ T293] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.358873][ T293] netif_set_mtu (net/core/dev.c:9652) 
[ 24.359224][ T293] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.359605][ T293] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.359868][ T293] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.360347][ T293] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.360732][ T293] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 24.361077][ T293] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.361434][ T293] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.361865][ T293] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.362203][ T293] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.362549][ T293] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.362898][ T293] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.363240][ T293] ? __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) 
[ 24.363603][ T293] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.364023][ T293] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.364386][ T293] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.364723][ T293] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.365057][ T293] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.365411][ T293] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.365750][ T293] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.366081][ T293] ? __create_object (mm/kmemleak.c:771) 
[ 24.366432][ T293] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.366774][ T293] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.367118][ T293] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.367556][ T293] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.367909][ T293] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.368260][ T293] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.368607][ T293] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.368982][ T293] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.369326][ T293] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.369680][ T293] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.370021][ T293] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.370368][ T293] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.370709][ T293] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.371047][ T293] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.371410][ T293] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.371749][ T293] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.372087][ T293] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.372450][ T293] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.372788][ T293] ? 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) 
[ 24.373127][ T293] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.373481][ T293] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.373824][ T293] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.374164][ T293] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.374513][ T293] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.374859][ T293] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 24.375198][ T293] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.375563][ T293] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.375904][ T293] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.376351][ T293] ___sys_sendmsg (net/socket.c:2670) 
[ 24.376690][ T293] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.377026][ T293] ? __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) 
[ 24.377456][ T293] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.377796][ T293] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.378150][ T293] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.378503][ T293] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.378839][ T293] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.379176][ T293] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.379542][ T293] __sys_sendmsg (net/socket.c:2700) 
[ 24.379881][ T293] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.380293][ T293] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.380652][ T293] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.380993][ T293] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.381349][ T293] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.381766][  T293] RIP: 0033:0x7ff38aeb81e7
[ 24.382116][ T293] 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)
[   24.383294][  T293] RSP: 002b:00007fff48ff1508 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.383817][  T293] RAX: ffffffffffffffda RBX: 00007fff48ff1c40 RCX: 00007ff38aeb81e7
[   24.384316][  T293] RDX: 0000000000000000 RSI: 00007fff48ff1570 RDI: 0000000000000005
[   24.384827][  T293] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   24.385318][  T293] R10: 00000000163af910 R11: 0000000000000246 R12: 0000000000000003
[   24.385825][  T293] R13: 00000000686e740c R14: 0000000000499600 R15: 0000000000000000
| [   24.550632][  T294] ------------[ cut here ]------------
| [ 24.550977][ T294] WARNING: CPU: 2 PID: 294 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) 
| [   24.551654][  T294] Modules linked in: bridge stp llc veth
| [   24.552656][  T294] Tainted: [W]=WARN
[   24.552907][  T294] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 24.553303][ T294] 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) 
[ 24.553657][ T294] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
[   24.554811][  T294] RSP: 0018:ffffc9000060eef0 EFLAGS: 00010246
[   24.555216][  T294] RAX: 0000000000000000 RBX: ffff8880098aa000 RCX: 0000000000000001
[   24.555734][  T294] RDX: 0000000000000000 RSI: ffffffffaba9f52e RDI: ffffffffab25a5a0
[   24.556217][  T294] RBP: ffffc9000060efe0 R08: 0000000000000000 R09: 0000000000000000
[   24.556702][  T294] R10: ffffc9000060f010 R11: ffffffffac8b19b8 R12: 1ffff920000c1de2
[   24.557179][  T294] R13: 00000000000005dc R14: ffffc9000060f010 R15: ffff8880098aaf08
[   24.557667][  T294] FS:  00007f7901b10800(0000) GS:ffff8880887a7000(0000) knlGS:0000000000000000
[   24.558239][  T294] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   24.558657][  T294] CR2: 00000000004e5ab8 CR3: 000000000b7ec001 CR4: 0000000000772ef0
[   24.559144][  T294] PKRU: 55555554
[   24.559414][  T294] Call Trace:
[   24.559663][  T294]  <TASK>
[ 24.559837][ T294] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 24.560174][ T294] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.560526][ T294] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 24.560880][ T294] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 24.561310][ T294] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 24.561656][ T294] netif_set_mtu (net/core/dev.c:9652) 
[ 24.561982][ T294] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 24.562315][ T294] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 24.562783][ T294] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 24.563033][ T294] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 24.563507][ T294] br_add_if (net/bridge/br_if.c:697) bridge 
[ 24.563872][ T294] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 24.564205][ T294] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 24.564540][ T294] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 24.564943][ T294] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 24.565273][ T294] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 24.565608][ T294] ? __kernel_text_address (kernel/extable.c:79) 
[ 24.565937][ T294] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.566262][ T294] ? __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) 
[ 24.566596][ T294] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 24.566999][ T294] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.567323][ T294] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.567672][ T294] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 24.568007][ T294] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 24.568344][ T294] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.568665][ T294] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 24.568984][ T294] ? __create_object (mm/kmemleak.c:771) 
[ 24.569309][ T294] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 24.569651][ T294] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 24.569978][ T294] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 24.570391][ T294] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 24.570722][ T294] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 24.571054][ T294] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.571399][ T294] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.571734][ T294] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.572057][ T294] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 24.572384][ T294] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.572713][ T294] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 24.573036][ T294] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 24.573366][ T294] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.573695][ T294] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.574021][ T294] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 24.574356][ T294] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 24.574679][ T294] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 24.575017][ T294] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 24.575362][ T294] ? 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) 
[ 24.575700][ T294] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 24.576022][ T294] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 24.576363][ T294] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 24.576691][ T294] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 24.577012][ T294] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 24.577347][ T294] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 24.577681][ T294] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 24.578018][ T294] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 24.578354][ T294] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 24.578763][ T294] ___sys_sendmsg (net/socket.c:2670) 
[ 24.579082][ T294] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 24.579430][ T294] ? __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) 
[ 24.579839][ T294] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 24.580166][ T294] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.580502][ T294] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 24.580829][ T294] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 24.581149][ T294] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 24.581482][ T294] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 24.581816][ T294] __sys_sendmsg (net/socket.c:2700) 
[ 24.582136][ T294] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 24.582548][ T294] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 24.582882][ T294] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 24.583214][ T294] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 24.583564][ T294] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   24.583966][  T294] RIP: 0033:0x7f7901cdd1e7
[ 24.584303][ T294] 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)
[   24.585439][  T294] RSP: 002b:00007fffaf63f4c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   24.585934][  T294] RAX: ffffffffffffffda RBX: 00007fffaf63fc00 RCX: 00007f7901cdd1e7
[   24.586421][  T294] RDX: 0000000000000000 RSI: 00007fffaf63f530 RDI: 0000000000000005
[   24.586905][  T294] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   24.587405][  T294] R10: 00000000343ee910 R11: 0000000000000246 R12: 0000000000000003
[   24.587896][  T294] R13: 00000000686e740c R14: 0000000000499600 R15: 0000000000000000
| [   25.918483][  T303] ------------[ cut here ]------------
| [ 25.918815][ T303] WARNING: CPU: 3 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) 
| [   25.920198][  T303] Modules linked in: macvlan bridge stp llc veth
| [   25.921312][  T303] Tainted: [W]=WARN
[   25.921557][  T303] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 25.921962][ 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) 
[ 25.922294][ T303] Code: 00 00 8b 05 67 1b 38 02 85 c0 0f 84 52 fe ff ff 48 8d bb a0 0c 00 00 be ff ff ff ff e8 aa d0 79 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 67 1b 38 02    	mov    0x2381b67(%rip),%eax        # 0x2381b6f
   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 aa d0 79 00       	call   0x79d0cb
  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
[   25.923416][  T303] RSP: 0018:ffffc90000686ef0 EFLAGS: 00010246
[   25.923841][  T303] RAX: 0000000000000000 RBX: ffff8880098aa000 RCX: 0000000000000001
[   25.924345][  T303] RDX: 0000000000000000 RSI: ffffffffaba9f52e RDI: ffffffffab25a5a0
[   25.924875][  T303] RBP: ffffc90000686fe0 R08: 0000000000000000 R09: 0000000000000000
[   25.925366][  T303] R10: ffffc90000687010 R11: ffffffffac8b19b8 R12: 1ffff920000d0de2
[   25.925847][  T303] R13: 00000000000005dc R14: ffffc90000687010 R15: ffff8880098aaf08
[   25.926315][  T303] FS:  00007fb948d93800(0000) GS:ffff888088827000(0000) knlGS:0000000000000000
[   25.926870][  T303] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   25.927260][  T303] CR2: 00000000004e5818 CR3: 0000000002916006 CR4: 0000000000772ef0
[   25.927768][  T303] PKRU: 55555554
[   25.928030][  T303] Call Trace:
[   25.928267][  T303]  <TASK>
[ 25.928448][ T303] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 25.928795][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.929117][ T303] ? mark_held_locks (kernel/locking/lockdep.c:4328) 
[ 25.929437][ T303] ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:151 kernel/locking/spinlock.c:194) 
[ 25.929827][ T303] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[ 25.930143][ T303] netif_set_mtu (net/core/dev.c:9652) 
[ 25.930470][ T303] ? __pfx_netif_set_mtu (net/core/dev.c:9647) 
[ 25.930811][ T303] ? br_get_link_af_size_filtered (net/bridge/br_netlink.c:116) bridge 
[ 25.931256][ T303] dev_set_mtu (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:47 net/core/dev_api.c:249) 
[ 25.931505][ T303] br_mtu_auto_adjust (net/bridge/br_if.c:525) bridge 
[ 25.931929][ T303] br_add_if (net/bridge/br_if.c:697) bridge 
[ 25.932283][ T303] do_set_master (./include/net/netdev_lock.h:30 ./include/net/netdev_lock.h:41 net/core/rtnetlink.c:2949) 
[ 25.932658][ T303] do_setlink.constprop.0 (net/core/rtnetlink.c:3150) 
[ 25.932991][ T303] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 25.933400][ T303] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 25.933718][ T303] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 25.934037][ T303] ? __kernel_text_address (kernel/extable.c:79) 
[ 25.934364][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.934699][ 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) 
[ 25.935013][ T303] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 25.935447][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.935770][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.936083][ T303] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 25.936410][ T303] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 25.936772][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.937084][ T303] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 25.937406][ T303] ? __create_object (mm/kmemleak.c:771) 
[ 25.937719][ T303] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 25.938046][ T303] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 25.938381][ T303] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 25.938787][ T303] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 25.939107][ T303] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 25.939452][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.939760][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.940077][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.940412][ T303] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 25.940810][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.941123][ T303] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 25.941453][ T303] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 25.941773][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.942097][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.942428][ T303] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 25.942761][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 25.943074][ T303] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 25.943403][ T303] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 25.943711][ 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) 
[ 25.944026][ T303] netlink_unicast (net/netlink/af_netlink.c:1321 net/netlink/af_netlink.c:1346) 
[ 25.944356][ T303] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 25.944727][ T303] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 25.945046][ T303] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 25.945377][ T303] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 25.945697][ T303] ? _copy_from_user (./arch/x86/include/asm/smap.h:29 ./arch/x86/include/asm/uaccess_64.h:134 ./arch/x86/include/asm/uaccess_64.h:141 ./include/linux/uaccess.h:178 lib/usercopy.c:18) 
[ 25.946029][ T303] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 25.946359][ T303] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 25.946688][ T303] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 25.947087][ T303] ___sys_sendmsg (net/socket.c:2670) 
[ 25.947409][ T303] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 25.947723][ 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) 
[ 25.948143][ T303] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 25.948472][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.948839][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 25.949177][ T303] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 25.949505][ 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) 
[ 25.949823][ T303] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 25.950155][ T303] __sys_sendmsg (net/socket.c:2700) 
[ 25.950495][ T303] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 25.950891][ T303] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 25.951220][ T303] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 25.951563][ T303] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 25.951886][ T303] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   25.952270][  T303] RIP: 0033:0x7fb948f601e7
[ 25.952645][ 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)
[   25.953788][  T303] RSP: 002b:00007ffc028d3548 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   25.954259][  T303] RAX: ffffffffffffffda RBX: 00007ffc028d3c80 RCX: 00007fb948f601e7
[   25.954746][  T303] RDX: 0000000000000000 RSI: 00007ffc028d35b0 RDI: 0000000000000005
[   25.955214][  T303] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   25.955681][  T303] R10: 000000001e906910 R11: 0000000000000246 R12: 0000000000000003


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