======================================
| [   33.987755][  T418] GACT probability NOT on
| [   40.013229][  T475] ------------[ cut here ]------------
| [ 40.013736][ T475] WARNING: CPU: 2 PID: 475 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) 
| [   40.014309][  T475] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth
[   40.016103][  T475] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.016464][ T475] 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) 
[ 40.016811][ T475] 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
[   40.017839][  T475] RSP: 0018:ffffc90000647140 EFLAGS: 00010246
[   40.018205][  T475] RAX: 0000000000000000 RBX: ffff888008fcc000 RCX: 0000000000000001
[   40.018661][  T475] RDX: 0000000000000000 RSI: ffffffffaaa9b941 RDI: ffffffffaa2555e0
[   40.019092][  T475] RBP: ffffc90000647230 R08: ffff88800c578800 R09: 0000000000000000
[   40.019520][  T475] R10: ffffc900006475c8 R11: ffffffffab850668 R12: 1ffff920000c8e2c
[   40.019967][  T475] R13: 00000000000007d0 R14: ffffc90000647880 R15: ffff88800a9d98e0
[   40.020398][  T475] FS:  00007f49c7dcb800(0000) GS:ffff8880897b7000(0000) knlGS:0000000000000000
[   40.020909][  T475] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.021273][  T475] CR2: 00000000004e5aa0 CR3: 000000000cc99001 CR4: 0000000000772ef0
[   40.021715][  T475] PKRU: 55555554
[   40.021942][  T475] Call Trace:
[   40.022193][  T475]  <TASK>
[ 40.022352][ T475] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.022683][ T475] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 40.022979][ T475] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.023274][ T475] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 40.023563][ T475] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 40.024113][ T475] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 40.024419][ T475] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 40.024731][ T475] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 40.025105][ T475] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 40.025397][ T475] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 40.025705][ T475] ? __kernel_text_address (kernel/extable.c:79) 
[ 40.025996][ T475] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.026289][ T475] ? __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) 
[ 40.026580][ T475] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 40.026954][ T475] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.027246][ T475] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.027530][ T475] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 40.027843][ T475] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 40.028133][ T475] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.028425][ T475] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 40.028734][ T475] ? __create_object (mm/kmemleak.c:771) 
[ 40.029029][ T475] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 40.029333][ T475] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 40.029639][ T475] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 40.030002][ T475] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 40.030306][ T475] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 40.030616][ T475] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.030908][ T475] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.031200][ T475] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.031491][ T475] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 40.031801][ T475] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.032091][ T475] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.032381][ T475] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 40.032689][ T475] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.032980][ T475] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.033281][ T475] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 40.033571][ T475] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.033881][ T475] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 40.034181][ T475] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 40.034474][ T475] ? 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) 
[ 40.034773][ T475] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 40.035070][ T475] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 40.035357][ T475] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.035664][ T475] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 40.035968][ T475] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 40.036256][ T475] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 40.036556][ T475] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 40.036876][ T475] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 40.037166][ T475] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 40.037538][ T475] ___sys_sendmsg (net/socket.c:2670) 
[ 40.037850][ T475] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 40.038143][ T475] ? __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) 
[ 40.038505][ T475] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 40.038805][ T475] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.039095][ T475] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.039391][ T475] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.039694][ T475] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 40.039980][ T475] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.040281][ T475] __sys_sendmsg (net/socket.c:2700) 
[ 40.040578][ T475] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 40.040947][ T475] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 40.041247][ T475] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.041536][ T475] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.041836][ T475] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   40.042188][  T475] RIP: 0033:0x7f49c7f981e7
[ 40.042496][ T475] 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)
[   40.043506][  T475] RSP: 002b:00007ffcfc920f28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   40.043949][  T475] RAX: ffffffffffffffda RBX: 00007ffcfc921650 RCX: 00007f49c7f981e7
[   40.044376][  T475] RDX: 0000000000000000 RSI: 00007ffcfc920f90 RDI: 0000000000000005
[   40.044818][  T475] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[   40.045248][  T475] R10: 00007f49c7e95ee8 R11: 0000000000000246 R12: 0000000000000004
[   40.045690][  T475] R13: 00000000686e3e1c R14: 0000000000499600 R15: 0000000000000000
| [   40.156198][  T476] ------------[ cut here ]------------
| [ 40.156549][ T476] WARNING: CPU: 2 PID: 476 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) 
| [   40.157156][  T476] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth
| [   40.158339][  T476] Tainted: [W]=WARN
[   40.158564][  T476] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.158937][ T476] 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) 
[ 40.159234][ T476] 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
[   40.160238][  T476] RSP: 0018:ffffc90000657140 EFLAGS: 00010246
[   40.160621][  T476] RAX: 0000000000000000 RBX: ffff8880077c9000 RCX: 0000000000000001
[   40.161053][  T476] RDX: 0000000000000000 RSI: ffffffffaaa9b941 RDI: ffffffffaa2555e0
[   40.161474][  T476] RBP: ffffc90000657230 R08: ffff888005000800 R09: 0000000000000000
[   40.161969][  T476] R10: ffffc900006575c8 R11: ffffffffab850668 R12: 1ffff920000cae2c
[   40.162394][  T476] R13: 00000000000007d0 R14: ffffc90000657880 R15: ffff88800a9d8e60
[   40.162834][  T476] FS:  00007f3bd27f5800(0000) GS:ffff8880897b7000(0000) knlGS:0000000000000000
[   40.163329][  T476] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.163718][  T476] CR2: 00000000004e5aa8 CR3: 000000000cc99003 CR4: 0000000000772ef0
[   40.164150][  T476] PKRU: 55555554
[   40.164370][  T476] Call Trace:
[   40.164623][  T476]  <TASK>
[ 40.164780][ T476] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.165077][ T476] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 40.165365][ T476] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.165669][ T476] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 40.165957][ T476] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 40.166244][ T476] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 40.166535][ T476] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 40.166847][ T476] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 40.167213][ T476] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 40.167500][ T476] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 40.167817][ T476] ? __kernel_text_address (kernel/extable.c:79) 
[ 40.168107][ T476] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.168397][ T476] ? __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) 
[ 40.168721][ T476] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 40.169081][ T476] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.169368][ T476] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.169666][ T476] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 40.169952][ T476] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 40.170291][ T476] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.170588][ T476] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 40.170886][ T476] ? __create_object (mm/kmemleak.c:771) 
[ 40.171201][ T476] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 40.171502][ T476] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 40.171802][ T476] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 40.172174][ T476] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 40.172476][ T476] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 40.172794][ T476] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.173086][ T476] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.173386][ T476] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.173697][ T476] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 40.173993][ T476] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.174283][ T476] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.174569][ T476] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 40.174870][ T476] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.175168][ T476] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.175476][ T476] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 40.175780][ T476] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.176080][ T476] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 40.176382][ T476] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 40.176689][ T476] ? 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) 
[ 40.176995][ T476] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 40.177295][ T476] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 40.177601][ T476] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.177939][ T476] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 40.178240][ T476] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 40.178529][ T476] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 40.178836][ T476] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 40.179141][ T476] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 40.179432][ T476] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 40.179823][ T476] ___sys_sendmsg (net/socket.c:2670) 
[ 40.180125][ T476] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 40.180416][ T476] ? __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) 
[ 40.180806][ T476] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 40.181127][ T476] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.181415][ T476] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.181718][ T476] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.182004][ T476] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 40.182304][ T476] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.182615][ T476] __sys_sendmsg (net/socket.c:2700) 
[ 40.182910][ T476] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 40.183273][ T476] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 40.183574][ T476] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.183880][ T476] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.184182][ T476] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   40.184540][  T476] RIP: 0033:0x7f3bd29c21e7
[ 40.184883][ T476] 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)
[   40.185901][  T476] RSP: 002b:00007ffe3880efe8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   40.186336][  T476] RAX: ffffffffffffffda RBX: 00007ffe3880f710 RCX: 00007f3bd29c21e7
[   40.186780][  T476] RDX: 0000000000000000 RSI: 00007ffe3880f050 RDI: 0000000000000005
[   40.187213][  T476] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[   40.187686][  T476] R10: 00007f3bd28bfee8 R11: 0000000000000246 R12: 0000000000000004
[   40.188118][  T476] R13: 00000000686e3e1c R14: 0000000000499600 R15: 0000000000000000
| [   40.317109][  T477] ------------[ cut here ]------------
| [ 40.317425][ T477] WARNING: CPU: 3 PID: 477 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) 
| [   40.318013][  T477] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth
| [   40.319185][  T477] Tainted: [W]=WARN
[   40.319391][  T477] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.319742][ T477] 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) 
[ 40.320031][ T477] 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
[   40.321019][  T477] RSP: 0018:ffffc90000667140 EFLAGS: 00010246
[   40.321366][  T477] RAX: 0000000000000000 RBX: ffff88800c51c000 RCX: 0000000000000001
[   40.321782][  T477] RDX: 0000000000000000 RSI: ffffffffaaa9b941 RDI: ffffffffaa2555e0
[   40.322236][  T477] RBP: ffffc90000667230 R08: ffff88800cfd0800 R09: 0000000000000000
[   40.322659][  T477] R10: ffffc900006675c8 R11: ffffffffab850668 R12: 1ffff920000cce2c
[   40.323067][  T477] R13: 00000000000007d0 R14: ffffc90000667880 R15: ffff88800a9d83e0
[   40.323571][  T477] FS:  00007fcc752fe800(0000) GS:ffff888089837000(0000) knlGS:0000000000000000
[   40.324063][  T477] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.324434][  T477] CR2: 00000000004e73b0 CR3: 0000000004ee5001 CR4: 0000000000772ef0
[   40.324855][  T477] PKRU: 55555554
[   40.325065][  T477] Call Trace:
[   40.325270][  T477]  <TASK>
[ 40.325411][ T477] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.325697][ T477] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 40.325975][ T477] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.326253][ T477] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 40.326527][ T477] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 40.326834][ T477] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 40.327138][ T477] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 40.327421][ T477] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 40.327798][ T477] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 40.328095][ T477] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 40.328367][ T477] ? __kernel_text_address (kernel/extable.c:79) 
[ 40.328650][ T477] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.328928][ T477] ? __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) 
[ 40.329232][ T477] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 40.329573][ T477] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.329864][ T477] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.330137][ T477] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 40.330412][ T477] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 40.330696][ T477] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.330976][ T477] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 40.331249][ T477] ? __create_object (mm/kmemleak.c:771) 
[ 40.331528][ T477] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 40.331813][ T477] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 40.332093][ T477] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 40.332439][ T477] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 40.332728][ T477] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 40.333015][ T477] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.333290][ T477] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.333571][ T477] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.333855][ T477] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 40.334131][ T477] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.334415][ T477] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.334720][ T477] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 40.334997][ T477] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.335278][ T477] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.335559][ T477] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 40.335844][ T477] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.336118][ T477] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 40.336433][ T477] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 40.336715][ T477] ? 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) 
[ 40.336993][ T477] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 40.337276][ T477] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 40.337553][ T477] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.337862][ T477] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 40.338142][ T477] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 40.338420][ T477] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 40.338713][ T477] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 40.338991][ T477] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 40.339266][ T477] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 40.339634][ T477] ___sys_sendmsg (net/socket.c:2670) 
[ 40.339913][ T477] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 40.340187][ T477] ? __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) 
[ 40.340541][ T477] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 40.340827][ T477] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.341113][ T477] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.341397][ T477] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.341700][ T477] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 40.341976][ T477] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.342257][ T477] __sys_sendmsg (net/socket.c:2700) 
[ 40.342559][ T477] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 40.342920][ T477] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 40.343215][ T477] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.343492][ T477] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.343777][ T477] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   40.344118][  T477] RIP: 0033:0x7fcc754cb1e7
[ 40.344402][ T477] 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)
[   40.345408][  T477] RSP: 002b:00007ffc4a3f69f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   40.345831][  T477] RAX: ffffffffffffffda RBX: 00007ffc4a3f7120 RCX: 00007fcc754cb1e7
[   40.346243][  T477] RDX: 0000000000000000 RSI: 00007ffc4a3f6a60 RDI: 0000000000000005
[   40.346668][  T477] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[   40.347078][  T477] R10: 00007fcc753c8ee8 R11: 0000000000000246 R12: 0000000000000004
[   40.347484][  T477] R13: 00000000686e3e1c R14: 0000000000499600 R15: 0000000000000000
| [   40.474504][  T478] ------------[ cut here ]------------
| [ 40.475745][ T478] WARNING: CPU: 0 PID: 478 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) 
| [   40.476721][  T478] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth
| [   40.478763][  T478] Tainted: [W]=WARN
[   40.479133][  T478] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.479755][ T478] 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) 
[ 40.480271][ T478] 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
[   40.482001][  T478] RSP: 0018:ffffc90000677140 EFLAGS: 00010246
[   40.482620][  T478] RAX: 0000000000000000 RBX: ffff888005844000 RCX: 0000000000000001
[   40.483314][  T478] RDX: 0000000000000000 RSI: ffffffffaaa9b941 RDI: ffffffffaa2555e0
[   40.484048][  T478] RBP: ffffc90000677230 R08: ffff88800b548800 R09: 0000000000000000
[   40.484796][  T478] R10: ffffc900006775c8 R11: ffffffffab850668 R12: 1ffff920000cee2c
[   40.485535][  T478] R13: 00000000000007d0 R14: ffffc90000677880 R15: ffff88800a2bb860
[   40.486288][  T478] FS:  00007f7efe5fc800(0000) GS:ffff8880896b7000(0000) knlGS:0000000000000000
[   40.487205][  T478] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.487754][  T478] CR2: 00000000004e5ab0 CR3: 000000000cc99005 CR4: 0000000000772ef0
[   40.488172][  T478] PKRU: 55555554
[   40.488381][  T478] Call Trace:
[   40.488602][  T478]  <TASK>
[ 40.488744][ T478] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.489026][ T478] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 40.489304][ T478] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.489581][ T478] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 40.489877][ T478] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 40.490156][ T478] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 40.490436][ T478] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 40.490729][ T478] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 40.491083][ T478] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 40.491358][ T478] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 40.491650][ T478] ? __kernel_text_address (kernel/extable.c:79) 
[ 40.491926][ T478] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.492203][ T478] ? __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) 
[ 40.492481][ T478] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 40.492830][ T478] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.493107][ T478] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.493383][ T478] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 40.493675][ T478] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 40.493955][ T478] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.494225][ T478] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 40.494494][ T478] ? __create_object (mm/kmemleak.c:771) 
[ 40.494780][ T478] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 40.495056][ T478] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 40.495328][ T478] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 40.495679][ T478] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 40.495965][ T478] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 40.496256][ T478] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.496527][ T478] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.496813][ T478] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.497088][ T478] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 40.497357][ T478] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.497661][ T478] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.497937][ T478] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 40.498218][ T478] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.498495][ T478] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.498781][ T478] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 40.499062][ T478] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.499338][ T478] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 40.499632][ T478] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 40.499909][ T478] ? 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) 
[ 40.500190][ T478] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 40.500466][ T478] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 40.500756][ T478] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.501035][ T478] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 40.501316][ T478] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 40.501589][ T478] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 40.501878][ T478] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 40.502165][ T478] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 40.502437][ T478] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 40.502798][ T478] ___sys_sendmsg (net/socket.c:2670) 
[ 40.503071][ T478] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 40.503345][ T478] ? __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) 
[ 40.503692][ T478] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 40.503971][ T478] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.504253][ T478] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.504530][ T478] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.504842][ T478] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 40.505119][ T478] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.505420][ T478] __sys_sendmsg (net/socket.c:2700) 
[ 40.505697][ T478] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 40.506033][ T478] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 40.506325][ T478] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.506622][ T478] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.506898][ T478] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   40.507235][  T478] RIP: 0033:0x7f7efe7c91e7
[ 40.507519][ T478] 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)
[   40.508573][  T478] RSP: 002b:00007ffe0b55a6b8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   40.508998][  T478] RAX: ffffffffffffffda RBX: 00007ffe0b55ade0 RCX: 00007f7efe7c91e7
[   40.509409][  T478] RDX: 0000000000000000 RSI: 00007ffe0b55a720 RDI: 0000000000000005
[   40.509851][  T478] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[   40.510267][  T478] R10: 00007f7efe6c6ee8 R11: 0000000000000246 R12: 0000000000000004
[   40.510688][  T478] R13: 00000000686e3e1d R14: 0000000000499600 R15: 0000000000000000
| [   40.629890][  T479] ------------[ cut here ]------------
| [ 40.630210][ T479] WARNING: CPU: 3 PID: 479 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) 
| [   40.630762][  T479] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth
| [   40.633066][  T479] Tainted: [W]=WARN
[   40.633296][  T479] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.633660][ T479] 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) 
[ 40.633955][ T479] 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
[   40.634962][  T479] RSP: 0018:ffffc90000697140 EFLAGS: 00010246
[   40.635309][  T479] RAX: 0000000000000000 RBX: ffff888005771000 RCX: 0000000000000001
[   40.635758][  T479] RDX: 0000000000000000 RSI: ffffffffaaa9b941 RDI: ffffffffaa2555e0
[   40.636173][  T479] RBP: ffffc90000697230 R08: ffff88800b57b800 R09: 0000000000000000
[   40.636603][  T479] R10: ffffc900006975c8 R11: ffffffffab850668 R12: 1ffff920000d2e2c
[   40.637039][  T479] R13: 00000000000007d0 R14: ffffc90000697880 R15: ffff88800a2bade0
[   40.637461][  T479] FS:  00007f8098a94800(0000) GS:ffff888089837000(0000) knlGS:0000000000000000
[   40.637967][  T479] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.638317][  T479] CR2: 00000000004e55b8 CR3: 000000000c671002 CR4: 0000000000772ef0
[   40.638743][  T479] PKRU: 55555554
[   40.638963][  T479] Call Trace:
[   40.639182][  T479]  <TASK>
[ 40.639324][ T479] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.639624][ T479] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 40.639929][ T479] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.640205][ T479] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 40.640481][ T479] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 40.640783][ T479] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 40.641061][ T479] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 40.641341][ T479] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 40.641696][ T479] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 40.641979][ T479] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 40.642251][ T479] ? __kernel_text_address (kernel/extable.c:79) 
[ 40.642536][ T479] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.642917][ T479] ? __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) 
[ 40.643212][ T479] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 40.643561][ T479] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.643857][ T479] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.644136][ T479] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 40.644435][ T479] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 40.644734][ T479] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.645009][ T479] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 40.645286][ T479] ? __create_object (mm/kmemleak.c:771) 
[ 40.645562][ T479] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 40.645846][ T479] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 40.646137][ T479] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 40.646479][ T479] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 40.646769][ T479] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 40.647057][ T479] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.647347][ T479] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.647784][ T479] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.648068][ T479] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 40.648342][ T479] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.648630][ T479] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.648918][ T479] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 40.649214][ T479] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.649519][ T479] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.649816][ T479] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 40.650091][ T479] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.650366][ T479] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 40.650659][ T479] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 40.650932][ T479] ? 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) 
[ 40.651231][ T479] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 40.651515][ T479] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 40.651794][ T479] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.652075][ T479] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 40.652352][ T479] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 40.652634][ T479] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 40.652919][ T479] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 40.653197][ T479] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 40.653481][ T479] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 40.653839][ T479] ___sys_sendmsg (net/socket.c:2670) 
[ 40.654110][ T479] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 40.654384][ T479] ? __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) 
[ 40.654733][ T479] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 40.655009][ T479] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.655286][ T479] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.655572][ T479] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.655883][ T479] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 40.656156][ T479] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.656437][ T479] __sys_sendmsg (net/socket.c:2700) 
[ 40.656716][ T479] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 40.657079][ T479] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 40.657365][ T479] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.657679][ T479] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.657960][ T479] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   40.658317][  T479] RIP: 0033:0x7f8098c611e7
[ 40.658626][ T479] 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)
[   40.659675][  T479] RSP: 002b:00007ffee58553a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   40.660096][  T479] RAX: ffffffffffffffda RBX: 00007ffee5855ad0 RCX: 00007f8098c611e7
[   40.660532][  T479] RDX: 0000000000000000 RSI: 00007ffee5855410 RDI: 0000000000000005
[   40.660949][  T479] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[   40.661365][  T479] R10: 00007f8098b5eee8 R11: 0000000000000246 R12: 0000000000000004
[   40.661788][  T479] R13: 00000000686e3e1d R14: 0000000000499600 R15: 0000000000000000
| [   40.793635][  T480] ------------[ cut here ]------------
| [ 40.793994][ T480] WARNING: CPU: 2 PID: 480 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) 
| [   40.794552][  T480] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth
| [   40.795836][  T480] Tainted: [W]=WARN
[   40.796065][  T480] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.796424][ T480] 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) 
[ 40.797103][ T480] 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
[   40.798130][  T480] RSP: 0018:ffffc90000517140 EFLAGS: 00010246
[   40.798493][  T480] RAX: 0000000000000000 RBX: ffff888005e89000 RCX: 0000000000000001
[   40.798931][  T480] RDX: 0000000000000000 RSI: ffffffffaaa9b941 RDI: ffffffffaa2555e0
[   40.799361][  T480] RBP: ffffc90000517230 R08: ffff888005ecd000 R09: 0000000000000000
[   40.799793][  T480] R10: ffffc900005175c8 R11: ffffffffab850668 R12: 1ffff920000a2e2c
[   40.800216][  T480] R13: 00000000000007d0 R14: ffffc90000517880 R15: ffff88800a2ba360
[   40.800651][  T480] FS:  00007f66d3e44800(0000) GS:ffff8880897b7000(0000) knlGS:0000000000000000
[   40.801145][  T480] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.801505][  T480] CR2: 00000000004e5ac8 CR3: 000000000b6c6003 CR4: 0000000000772ef0
[   40.801941][  T480] PKRU: 55555554
[   40.802162][  T480] Call Trace:
[   40.802379][  T480]  <TASK>
[ 40.802534][ T480] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.802839][ T480] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 40.803134][ T480] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.803425][ T480] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 40.803747][ T480] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 40.804035][ T480] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 40.804326][ T480] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 40.804634][ T480] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 40.805037][ T480] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 40.805323][ T480] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 40.805622][ T480] ? __kernel_text_address (kernel/extable.c:79) 
[ 40.805913][ T480] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.806202][ T480] ? __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) 
[ 40.806489][ T480] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 40.806855][ T480] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.807152][ T480] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.807434][ T480] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 40.807752][ T480] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 40.808042][ T480] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.808329][ T480] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 40.808625][ T480] ? __create_object (mm/kmemleak.c:771) 
[ 40.808916][ T480] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 40.809202][ T480] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 40.809496][ T480] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 40.809864][ T480] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 40.810158][ T480] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 40.810449][ T480] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.810751][ T480] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.811045][ T480] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.811335][ T480] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 40.811637][ T480] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.811929][ T480] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.812216][ T480] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 40.812505][ T480] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.812809][ T480] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.813102][ T480] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 40.813389][ T480] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.813689][ T480] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 40.814037][ T480] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 40.814321][ T480] ? 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) 
[ 40.814634][ T480] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 40.814926][ T480] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 40.815213][ T480] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.815504][ T480] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 40.815806][ T480] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 40.816100][ T480] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 40.816395][ T480] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 40.816699][ T480] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 40.816992][ T480] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 40.817357][ T480] ___sys_sendmsg (net/socket.c:2670) 
[ 40.817675][ T480] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 40.817962][ T480] ? __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) 
[ 40.818329][ T480] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 40.818637][ T480] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.818933][ T480] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.819230][ T480] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.819521][ T480] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 40.819827][ T480] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.820128][ T480] __sys_sendmsg (net/socket.c:2700) 
[ 40.820423][ T480] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 40.820792][ T480] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 40.821092][ T480] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.821381][ T480] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.821688][ T480] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   40.822047][  T480] RIP: 0033:0x7f66d40111e7
[ 40.822344][ T480] 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)
[   40.823459][  T480] RSP: 002b:00007ffda863e908 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   40.823901][  T480] RAX: ffffffffffffffda RBX: 00007ffda863f030 RCX: 00007f66d40111e7
[   40.824351][  T480] RDX: 0000000000000000 RSI: 00007ffda863e970 RDI: 0000000000000005
[   40.824795][  T480] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[   40.825218][  T480] R10: 00007f66d3f0eee8 R11: 0000000000000246 R12: 0000000000000004
[   40.825654][  T480] R13: 00000000686e3e1d R14: 0000000000499600 R15: 0000000000000000
| [   40.928468][  T481] ------------[ cut here ]------------
| [ 40.928793][ T481] WARNING: CPU: 0 PID: 481 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) 
| [   40.929356][  T481] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth
| [   40.930893][  T481] Tainted: [W]=WARN
[   40.931105][  T481] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 40.931452][ T481] 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) 
[ 40.931745][ T481] 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
[   40.932731][  T481] RSP: 0018:ffffc90000697140 EFLAGS: 00010246
[   40.933083][  T481] RAX: 0000000000000000 RBX: ffff888008a8c000 RCX: 0000000000000001
[   40.933493][  T481] RDX: 0000000000000000 RSI: ffffffffaaa9b941 RDI: ffffffffaa2555e0
[   40.933914][  T481] RBP: ffffc90000697230 R08: ffff88800aa25000 R09: 0000000000000000
[   40.934324][  T481] R10: ffffc900006975c8 R11: ffffffffab850668 R12: 1ffff920000d2e2c
[   40.934755][  T481] R13: 00000000000007d0 R14: ffffc90000697880 R15: ffff88800a2b98e0
[   40.935164][  T481] FS:  00007f380ca92800(0000) GS:ffff8880896b7000(0000) knlGS:0000000000000000
[   40.935653][  T481] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   40.936002][  T481] CR2: 00000000004e5ac0 CR3: 000000000c671001 CR4: 0000000000772ef0
[   40.936413][  T481] PKRU: 55555554
[   40.936631][  T481] Call Trace:
[   40.936837][  T481]  <TASK>
[ 40.936976][ T481] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.937257][ T481] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 40.937532][ T481] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.937832][ T481] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 40.938119][ T481] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 40.938397][ T481] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 40.938691][ T481] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 40.938975][ T481] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 40.939326][ T481] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 40.939606][ T481] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 40.939882][ T481] ? __kernel_text_address (kernel/extable.c:79) 
[ 40.940157][ T481] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.940436][ T481] ? __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) 
[ 40.940726][ T481] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 40.941065][ T481] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.941341][ T481] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.941623][ T481] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 40.941896][ T481] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 40.942168][ T481] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.942442][ T481] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 40.942733][ T481] ? __create_object (mm/kmemleak.c:771) 
[ 40.943010][ T481] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 40.943285][ T481] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 40.943559][ T481] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 40.943908][ T481] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 40.944191][ T481] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 40.944473][ T481] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.944763][ T481] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.945056][ T481] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.945331][ T481] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 40.945610][ T481] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.945886][ T481] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 40.946159][ T481] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 40.946434][ T481] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.946721][ T481] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.947001][ T481] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 40.947280][ T481] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 40.947553][ T481] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 40.947861][ T481] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 40.948137][ T481] ? 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) 
[ 40.948413][ T481] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 40.948698][ T481] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 40.948982][ T481] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.949263][ T481] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 40.949540][ T481] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 40.949824][ T481] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 40.950103][ T481] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 40.950379][ T481] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 40.950661][ T481] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 40.951011][ T481] ___sys_sendmsg (net/socket.c:2670) 
[ 40.951288][ T481] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 40.951560][ T481] ? __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) 
[ 40.951913][ T481] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 40.952191][ T481] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.952467][ T481] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 40.952758][ T481] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 40.953032][ T481] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 40.953310][ T481] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 40.953601][ T481] __sys_sendmsg (net/socket.c:2700) 
[ 40.953873][ T481] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 40.954212][ T481] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 40.954496][ T481] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 40.954790][ T481] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 40.955067][ T481] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   40.955411][  T481] RIP: 0033:0x7f380cc5f1e7
[ 40.955714][ T481] 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)
[   40.956696][  T481] RSP: 002b:00007ffdadd67a78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   40.957111][  T481] RAX: ffffffffffffffda RBX: 00007ffdadd681a0 RCX: 00007f380cc5f1e7
[   40.957527][  T481] RDX: 0000000000000000 RSI: 00007ffdadd67ae0 RDI: 0000000000000005
[   40.957964][  T481] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[   40.958375][  T481] R10: 00007f380cb5cee8 R11: 0000000000000246 R12: 0000000000000004
[   40.958794][  T481] R13: 00000000686e3e1d R14: 0000000000499600 R15: 0000000000000000
| [   41.091250][  T482] ------------[ cut here ]------------
| [ 41.091617][ T482] WARNING: CPU: 2 PID: 482 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) 
| [   41.092183][  T482] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth
| [   41.093409][  T482] Tainted: [W]=WARN
[   41.093641][  T482] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 41.093996][ T482] 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) 
[ 41.094294][ T482] 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
[   41.095309][  T482] RSP: 0018:ffffc900004f7140 EFLAGS: 00010246
[   41.095680][  T482] RAX: 0000000000000000 RBX: ffff88800bb2c000 RCX: 0000000000000001
[   41.096148][  T482] RDX: 0000000000000000 RSI: ffffffffaaa9b941 RDI: ffffffffaa2555e0
[   41.096579][  T482] RBP: ffffc900004f7230 R08: ffff88800cc32000 R09: 0000000000000000
[   41.097034][  T482] R10: ffffc900004f75c8 R11: ffffffffab850668 R12: 1ffff9200009ee2c
[   41.097462][  T482] R13: 00000000000007d0 R14: ffffc900004f7880 R15: ffff88800a2b8e60
[   41.097909][  T482] FS:  00007f669157d800(0000) GS:ffff8880897b7000(0000) knlGS:0000000000000000
[   41.098401][  T482] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   41.098778][  T482] CR2: 00000000004e73c8 CR3: 000000000b6c6005 CR4: 0000000000772ef0
[   41.099204][  T482] PKRU: 55555554
[   41.099423][  T482] Call Trace:
[   41.099649][  T482]  <TASK>
[ 41.099804][ T482] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.100101][ T482] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 41.100410][ T482] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 41.100715][ T482] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 41.101010][ T482] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 41.101299][ T482] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 41.101601][ T482] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 41.101896][ T482] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 41.102257][ T482] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 41.102543][ T482] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 41.102844][ T482] ? __kernel_text_address (kernel/extable.c:79) 
[ 41.103133][ T482] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.103421][ T482] ? __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) 
[ 41.103721][ T482] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 41.104074][ T482] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 41.104364][ T482] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 41.104658][ T482] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 41.104949][ T482] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 41.105235][ T482] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.105526][ T482] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 41.105834][ T482] ? __create_object (mm/kmemleak.c:771) 
[ 41.106125][ T482] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 41.106411][ T482] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 41.106710][ T482] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 41.107074][ T482] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 41.107392][ T482] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 41.107715][ T482] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 41.108002][ T482] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.108294][ T482] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.108588][ T482] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 41.108883][ T482] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 41.109172][ T482] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 41.109457][ T482] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 41.109762][ T482] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 41.110050][ T482] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.110347][ T482] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 41.110660][ T482] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 41.110963][ T482] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 41.111273][ T482] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 41.111571][ T482] ? 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) 
[ 41.111895][ T482] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 41.112203][ T482] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 41.112504][ T482] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.112820][ T482] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 41.113127][ T482] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 41.113427][ T482] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 41.113749][ T482] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 41.114059][ T482] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 41.114370][ T482] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 41.114766][ T482] ___sys_sendmsg (net/socket.c:2670) 
[ 41.115068][ T482] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 41.115366][ T482] ? __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) 
[ 41.115732][ T482] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 41.116064][ T482] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.116363][ T482] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.116669][ T482] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.116960][ T482] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 41.117244][ T482] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 41.117538][ T482] __sys_sendmsg (net/socket.c:2700) 
[ 41.117849][ T482] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 41.118203][ T482] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 41.118506][ T482] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 41.118808][ T482] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 41.119094][ T482] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   41.119445][  T482] RIP: 0033:0x7f669174a1e7
[ 41.119751][ T482] 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)
[   41.120802][  T482] RSP: 002b:00007fff42eec368 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   41.121232][  T482] RAX: ffffffffffffffda RBX: 00007fff42eeca90 RCX: 00007f669174a1e7
[   41.121666][  T482] RDX: 0000000000000000 RSI: 00007fff42eec3d0 RDI: 0000000000000005
[   41.122087][  T482] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[   41.122515][  T482] R10: 00007f6691647ee8 R11: 0000000000000246 R12: 0000000000000004
[   41.122963][  T482] R13: 00000000686e3e1d R14: 0000000000499600 R15: 0000000000000000
| [   41.227331][  T483] ------------[ cut here ]------------
| [ 41.228680][ T483] WARNING: CPU: 3 PID: 483 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) 
| [   41.229244][  T483] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth
| [   41.230400][  T483] Tainted: [W]=WARN
[   41.230620][  T483] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 41.230964][ T483] 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) 
[ 41.231246][ T483] 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
[   41.232237][  T483] RSP: 0018:ffffc90000547140 EFLAGS: 00010246
[   41.232583][  T483] RAX: 0000000000000000 RBX: ffff888005069000 RCX: 0000000000000001
[   41.232999][  T483] RDX: 0000000000000000 RSI: ffffffffaaa9b941 RDI: ffffffffaa2555e0
[   41.233408][  T483] RBP: ffffc90000547230 R08: ffff888005662000 R09: 0000000000000000
[   41.233835][  T483] R10: ffffc900005475c8 R11: ffffffffab850668 R12: 1ffff920000a8e2c
[   41.234249][  T483] R13: 00000000000007d0 R14: ffffc90000547880 R15: ffff88800a2b83e0
[   41.234668][  T483] FS:  00007f0f68444800(0000) GS:ffff888089837000(0000) knlGS:0000000000000000
[   41.235145][  T483] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   41.235490][  T483] CR2: 00000000004e5ab8 CR3: 0000000008aa3001 CR4: 0000000000772ef0
[   41.235917][  T483] PKRU: 55555554
[   41.236132][  T483] Call Trace:
[   41.236334][  T483]  <TASK>
[ 41.236472][ T483] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.236759][ T483] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 41.237034][ T483] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 41.237310][ T483] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 41.237640][ T483] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 41.237920][ T483] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 41.238199][ T483] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 41.238477][ T483] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 41.238837][ T483] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 41.239111][ T483] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 41.239382][ T483] ? __kernel_text_address (kernel/extable.c:79) 
[ 41.239675][ T483] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.239955][ T483] ? __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) 
[ 41.240230][ T483] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 41.240569][ T483] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 41.240853][ T483] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 41.241127][ T483] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 41.241399][ T483] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 41.241690][ T483] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.241965][ T483] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 41.242237][ T483] ? __create_object (mm/kmemleak.c:771) 
[ 41.242512][ T483] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 41.242796][ T483] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 41.243069][ T483] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 41.243410][ T483] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 41.243701][ T483] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 41.243985][ T483] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 41.244257][ T483] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.244535][ T483] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.244820][ T483] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 41.245091][ T483] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 41.245365][ T483] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 41.245645][ T483] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 41.245921][ T483] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 41.246205][ T483] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.246483][ T483] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 41.246766][ T483] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 41.247040][ T483] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 41.247326][ T483] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 41.247615][ T483] ? 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) 
[ 41.247899][ T483] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 41.248176][ T483] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 41.248448][ T483] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.248750][ T483] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 41.249047][ T483] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 41.249322][ T483] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 41.249613][ T483] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 41.249892][ T483] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 41.250169][ T483] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 41.250520][ T483] ___sys_sendmsg (net/socket.c:2670) 
[ 41.250801][ T483] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 41.251075][ T483] ? __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) 
[ 41.251412][ T483] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 41.251699][ T483] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.251975][ T483] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.252258][ T483] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.252533][ T483] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 41.252814][ T483] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 41.253095][ T483] __sys_sendmsg (net/socket.c:2700) 
[ 41.253366][ T483] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 41.253713][ T483] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 41.253999][ T483] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 41.254280][ T483] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 41.254558][ T483] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   41.254926][  T483] RIP: 0033:0x7f0f686111e7
[ 41.255211][ T483] 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)
[   41.256203][  T483] RSP: 002b:00007ffc11233608 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   41.256627][  T483] RAX: ffffffffffffffda RBX: 00007ffc11233d30 RCX: 00007f0f686111e7
[   41.257037][  T483] RDX: 0000000000000000 RSI: 00007ffc11233670 RDI: 0000000000000005
[   41.257443][  T483] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[   41.257871][  T483] R10: 00007f0f6850eee8 R11: 0000000000000246 R12: 0000000000000004
[   41.258283][  T483] R13: 00000000686e3e1d R14: 0000000000499600 R15: 0000000000000000
| [   41.354395][  T484] ------------[ cut here ]------------
| [ 41.355776][ T484] WARNING: CPU: 0 PID: 484 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) 
| [   41.356339][  T484] Modules linked in: act_gact cls_flower sch_ingress ip6_gre ip6_tunnel tunnel6 gre 8021q vrf veth
| [   41.357493][  T484] Tainted: [W]=WARN
[   41.357722][  T484] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 41.358071][ T484] 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) 
[ 41.358355][ T484] 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
[   41.359361][  T484] RSP: 0018:ffffc900006d7140 EFLAGS: 00010246
[   41.359716][  T484] RAX: 0000000000000000 RBX: ffff88800e481000 RCX: 0000000000000001
[   41.360127][  T484] RDX: 0000000000000000 RSI: ffffffffaaa9b941 RDI: ffffffffaa2555e0
[   41.360544][  T484] RBP: ffffc900006d7230 R08: ffff888009f73800 R09: 0000000000000000
[   41.360963][  T484] R10: ffffc900006d75c8 R11: ffffffffab850668 R12: 1ffff920000dae2c
[   41.361378][  T484] R13: 00000000000007d0 R14: ffffc900006d7880 R15: ffff88800cda3160
[   41.361801][  T484] FS:  00007f0733f54800(0000) GS:ffff8880896b7000(0000) knlGS:0000000000000000
[   41.362287][  T484] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   41.362644][  T484] CR2: 00000000004e59c0 CR3: 000000000c671003 CR4: 0000000000772ef0
[   41.363060][  T484] PKRU: 55555554
[   41.363266][  T484] Call Trace:
[   41.363471][  T484]  <TASK>
[ 41.363618][ T484] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.363898][ T484] ? __pfx_netif_set_mtu_ext (net/core/dev.c:9607) 
[ 41.364174][ T484] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 41.364451][ T484] ? __pfx_validate_linkmsg (net/core/rtnetlink.c:2660) 
[ 41.364734][ T484] ? is_bpf_text_address (kernel/bpf/core.c:777) 
[ 41.365017][ T484] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 41.365296][ T484] do_setlink.constprop.0 (net/core/rtnetlink.c:3106) 
[ 41.365575][ T484] ? __pfx_do_setlink.constprop.0 (net/core/rtnetlink.c:3021) 
[ 41.365931][ T484] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 41.366209][ T484] ? validate_chain (kernel/locking/lockdep.c:3804 kernel/locking/lockdep.c:3824 kernel/locking/lockdep.c:3879) 
[ 41.366479][ T484] ? __kernel_text_address (kernel/extable.c:79) 
[ 41.366776][ T484] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.367053][ T484] ? __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) 
[ 41.367329][ T484] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:88) 
[ 41.367694][ T484] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 41.367980][ T484] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 41.368259][ T484] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 21)) 
[ 41.368539][ T484] ? __mutex_lock (./arch/x86/include/asm/preempt.h:104 kernel/locking/mutex.c:728 kernel/locking/mutex.c:747) 
[ 41.368826][ T484] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.369105][ T484] ? rtnl_newlink (net/core/rtnetlink.c:343 net/core/rtnetlink.c:4056) 
[ 41.369378][ T484] ? __create_object (mm/kmemleak.c:771) 
[ 41.369669][ T484] ? __pfx___mutex_lock (kernel/locking/mutex.c:746) 
[ 41.369948][ T484] ? trace_cap_capable (./include/trace/events/capability.h:26 (discriminator 21)) 
[ 41.370232][ T484] ? _raw_spin_unlock_irqrestore (./arch/x86/include/asm/preempt.h:104 ./include/linux/spinlock_api_smp.h:152 kernel/locking/spinlock.c:194) 
[ 41.370577][ T484] ? __rtnl_newlink (net/core/rtnetlink.c:3907) 
[ 41.370867][ T484] rtnl_newlink (net/core/rtnetlink.c:351 net/core/rtnetlink.c:4058) 
[ 41.371161][ T484] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 41.371433][ T484] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.371724][ T484] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.371999][ T484] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/core/rtnetlink.c:6944) 
[ 41.372269][ T484] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 41.372549][ T484] ? __pfx_rtnl_newlink (net/core/rtnetlink.c:3948) 
[ 41.372830][ T484] rtnetlink_rcv_msg (net/core/rtnetlink.c:6946) 
[ 41.373109][ T484] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 41.373384][ T484] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.373670][ T484] netlink_rcv_skb (net/netlink/af_netlink.c:2551) 
[ 41.373944][ T484] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6849) 
[ 41.374224][ T484] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) 
[ 41.374513][ T484] ? netlink_deliver_tap (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/netlink/af_netlink.c:340) 
[ 41.374797][ T484] ? 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) 
[ 41.375079][ T484] netlink_unicast (net/netlink/af_netlink.c:1320 net/netlink/af_netlink.c:1346) 
[ 41.375360][ T484] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1331) 
[ 41.375642][ T484] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.375923][ T484] netlink_sendmsg (net/netlink/af_netlink.c:1896) 
[ 41.376201][ T484] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1815) 
[ 41.376483][ T484] ? __import_iovec (lib/iov_iter.c:1441 lib/iov_iter.c:1456) 
[ 41.376777][ T484] ____sys_sendmsg (net/socket.c:714 net/socket.c:729 net/socket.c:2614) 
[ 41.377053][ T484] ? __pfx_____sys_sendmsg (net/socket.c:2560) 
[ 41.377331][ T484] ? __pfx_copy_msghdr_from_user (net/socket.c:2540) 
[ 41.377708][ T484] ___sys_sendmsg (net/socket.c:2670) 
[ 41.377986][ T484] ? kasan_record_aux_stack (mm/kasan/generic.c:548) 
[ 41.378260][ T484] ? __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) 
[ 41.378627][ T484] ? __pfx____sys_sendmsg (net/socket.c:2657) 
[ 41.378908][ T484] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.379212][ T484] ? __lock_acquire (kernel/locking/lockdep.c:5240) 
[ 41.379494][ T484] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[ 41.379795][ T484] ? __virt_addr_valid (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2168 arch/x86/mm/physaddr.c:65) 
[ 41.380071][ T484] ? __lock_release (kernel/locking/lockdep.c:5539) 
[ 41.380353][ T484] __sys_sendmsg (net/socket.c:2700) 
[ 41.380634][ T484] ? __call_rcu_common.constprop.0 (kernel/rcu/tree.c:3119) 
[ 41.380981][ T484] ? __pfx___sys_sendmsg (net/socket.c:2685) 
[ 41.381269][ T484] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[ 41.381544][ T484] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[ 41.381830][ T484] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   41.382172][  T484] RIP: 0033:0x7f07341211e7
[ 41.382459][ T484] 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)
[   41.383458][  T484] RSP: 002b:00007fff432a28d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   41.383883][  T484] RAX: ffffffffffffffda RBX: 00007fff432a3000 RCX: 00007f07341211e7
[   41.384294][  T484] RDX: 0000000000000000 RSI: 00007fff432a2940 RDI: 0000000000000005
[   41.384727][  T484] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000078
[   41.385139][  T484] R10: 00007f073401eee8 R11: 0000000000000246 R12: 0000000000000004


Finger prints:
netif_set_mtu_ext:rtnl_newlink:rtnetlink_rcv_msg:netlink_rcv_skb:netlink_unicast