======================================
| [   30.681004][  T421] ------------[ cut here ]------------
| [   30.681293][  T421] RTNL: assertion failed at net/core/link_watch.c (59)
| [ 30.681614][ T421] WARNING: CPU: 3 PID: 421 at net/core/link_watch.c:59 default_operstate (net/core/link_watch.c:59 (discriminator 3))
| [   30.681983][  T421] Modules linked in: bridge stp llc 8021q vrf veth
[   30.682614][  T421] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 30.682884][ T421] RIP: 0010:default_operstate (net/core/link_watch.c:59 (discriminator 3))
[ 30.683124][ T421] Code: 83 e4 01 0f 85 03 ff ff ff c6 05 2e 39 3a 02 01 90 ba 3b 00 00 00 48 c7 c6 00 2b 37 94 48 c7 c7 40 2b 37 94 e8 13 95 ea fd 90 <0f> 0b 90 90 e9 d9 fe ff ff 48 89 ef e8 d1 bb 71 fe e9 f7 fd ff ff
All code
========
   0:	83 e4 01             	and    $0x1,%esp
   3:	0f 85 03 ff ff ff    	jne    0xffffffffffffff0c
   9:	c6 05 2e 39 3a 02 01 	movb   $0x1,0x23a392e(%rip)        # 0x23a393e
  10:	90                   	nop
  11:	ba 3b 00 00 00       	mov    $0x3b,%edx
  16:	48 c7 c6 00 2b 37 94 	mov    $0xffffffff94372b00,%rsi
  1d:	48 c7 c7 40 2b 37 94 	mov    $0xffffffff94372b40,%rdi
  24:	e8 13 95 ea fd       	call   0xfffffffffdea953c
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	e9 d9 fe ff ff       	jmp    0xffffffffffffff0c
  33:	48 89 ef             	mov    %rbp,%rdi
  36:	e8 d1 bb 71 fe       	call   0xfffffffffe71bc0c
  3b:	e9 f7 fd ff ff       	jmp    0xfffffffffffffe37

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	e9 d9 fe ff ff       	jmp    0xfffffffffffffee2
   9:	48 89 ef             	mov    %rbp,%rdi
   c:	e8 d1 bb 71 fe       	call   0xfffffffffe71bbe2
  11:	e9 f7 fd ff ff       	jmp    0xfffffffffffffe0d
[   30.683859][  T421] RSP: 0018:ffffc900009f71c8 EFLAGS: 00010286
[   30.684094][  T421] RAX: 0000000000000000 RBX: ffff8880093cc000 RCX: 1ffffffff297b58c
[   30.684358][  T421] RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
[   30.684608][  T421] RBP: 000000000000000b R08: 0000000000000000 R09: fffffbfff297b58c
[   30.684867][  T421] R10: 0000000000000003 R11: ffff8880060f0040 R12: 0000000000000000
[   30.685136][  T421] R13: dffffc0000000000 R14: ffffc900009f6cb0 R15: ffff8880093cc5b0
[   30.685394][  T421] FS:  00007fd7d6264800(0000) GS:ffff88802f580000(0000) knlGS:0000000000000000
[   30.685702][  T421] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   30.685923][  T421] CR2: 00000000004e4ff8 CR3: 000000000c19e002 CR4: 0000000000772ef0
[   30.686192][  T421] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   30.686458][  T421] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   30.686734][  T421] PKRU: 55555554
[   30.686870][  T421] Call Trace:
[   30.687002][  T421]  <TASK>
[ 30.687102][ T421] ? default_operstate (net/core/link_watch.c:59 (discriminator 3))
[ 30.687280][ T421] ? __warn (kernel/panic.c:748)
[ 30.687410][ T421] ? do_raw_spin_unlock (./arch/x86/include/asm/atomic.h:23 ./include/linux/atomic/atomic-arch-fallback.h:457 ./include/linux/atomic/atomic-instrumented.h:33 ./include/asm-generic/qspinlock.h:57 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[ 30.687580][ T421] ? default_operstate (net/core/link_watch.c:59 (discriminator 3))
[ 30.687748][ T421] ? report_bug (lib/bug.c:201 lib/bug.c:219)
[ 30.687922][ T421] ? handle_bug (arch/x86/kernel/traps.c:285)
[ 30.688055][ T421] ? exc_invalid_op (arch/x86/kernel/traps.c:309 (discriminator 1))
[ 30.688239][ T421] ? asm_exc_invalid_op (./arch/x86/include/asm/idtentry.h:621)
[ 30.688414][ T421] ? default_operstate (net/core/link_watch.c:59 (discriminator 3))
[ 30.688580][ T421] ? default_operstate (net/core/link_watch.c:59 (discriminator 3))
[ 30.688747][ T421] rfc2863_policy (net/core/link_watch.c:78)
[ 30.688917][ T421] linkwatch_do_dev (net/core/link_watch.c:180)
[ 30.689093][ T421] netdev_run_todo (net/core/dev.c:10894 (discriminator 2))
[ 30.689265][ T421] ? __pfx_netdev_run_todo (net/core/dev.c:10867)
[ 30.689447][ T421] rtnl_dellink (net/core/rtnetlink.c:3528)
[ 30.689618][ T421] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3484)
[ 30.689837][ T421] ? find_held_lock (kernel/locking/lockdep.c:5339)
[ 30.690010][ T421] ? __lock_release (kernel/locking/lockdep.c:5525)
[ 30.690189][ T421] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6900)
[ 30.690356][ T421] ? __pfx___lock_release (kernel/locking/lockdep.c:5501)
[ 30.690520][ T421] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 30.690696][ T421] ? rtnetlink_rcv_msg (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/rtnetlink.c:6900)
[ 30.690862][ T421] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3484)
[ 30.691031][ T421] rtnetlink_rcv_msg (net/core/rtnetlink.c:6902)
[ 30.691214][ T421] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6805)
[ 30.691386][ T421] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228)
[ 30.691549][ T421] ? mark_lock (kernel/locking/lockdep.c:4727 (discriminator 3))
[ 30.691682][ T421] ? __lock_acquire (kernel/locking/lockdep.c:5226)
[ 30.691856][ T421] netlink_rcv_skb (net/netlink/af_netlink.c:2543)
[ 30.692032][ T421] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6805)
[ 30.692210][ T421] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2520)
[ 30.692393][ T421] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340)
[ 30.692562][ T421] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333)
[ 30.692733][ T421] netlink_unicast (net/netlink/af_netlink.c:1322 net/netlink/af_netlink.c:1348)
[ 30.692900][ T421] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1333)
[ 30.693072][ T421] ? find_held_lock (kernel/locking/lockdep.c:5339)
[ 30.693267][ T421] netlink_sendmsg (net/netlink/af_netlink.c:1892)
[ 30.693438][ T421] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1811)
[ 30.693612][ T421] ____sys_sendmsg (net/socket.c:711 net/socket.c:726 net/socket.c:2594)
[ 30.693781][ T421] ? __pfx_____sys_sendmsg (net/socket.c:2540)
[ 30.693958][ T421] ? __pfx_copy_msghdr_from_user (net/socket.c:2520)
[ 30.694207][ T421] ___sys_sendmsg (net/socket.c:2650)
[ 30.694432][ T421] ? __pfx____sys_sendmsg (net/socket.c:2637)
[ 30.694664][ T421] ? kasan_save_stack (mm/kasan/common.c:49)
[ 30.694897][ T421] ? kasan_save_stack (mm/kasan/common.c:48)
[ 30.695152][ T421] ? __kasan_record_aux_stack (mm/kasan/generic.c:544)
[ 30.695387][ T421] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:123 kernel/rcu/tree.c:3087)
[ 30.695697][ T421] ? __x64_sys_close (fs/open.c:1557 fs/open.c:1539 fs/open.c:1539)
[ 30.695939][ T421] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 30.696196][ T421] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[ 30.696499][ T421] ? __lock_acquire (kernel/locking/lockdep.c:5226)
[ 30.696762][ T421] ? find_held_lock (kernel/locking/lockdep.c:5339)
[ 30.697004][ T421] ? __lock_release (kernel/locking/lockdep.c:5525)
[ 30.697287][ T421] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2058 arch/x86/mm/physaddr.c:65)
[ 30.697528][ T421] ? __pfx___lock_release (kernel/locking/lockdep.c:5501)
[ 30.697764][ T421] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5814)
[ 30.698012][ T421] __sys_sendmsg (net/socket.c:2680)
[ 30.698287][ T421] ? __pfx___sys_sendmsg (net/socket.c:2665)
[ 30.698522][ T421] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4643)
[ 30.698849][ T421] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)
[ 30.699103][ T421] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)
[   30.699393][  T421] RIP: 0033:0x7fd7d64709a7
[ 30.699648][ T421] Code: 0a 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:	0a 00                	or     (%rax),%al
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   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)
[   30.700318][  T421] RSP: 002b:00007ffcba4d4118 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   30.700583][  T421] RAX: ffffffffffffffda RBX: 00007ffcba4d4840 RCX: 00007fd7d64709a7
[   30.700856][  T421] RDX: 0000000000000000 RSI: 00007ffcba4d4180 RDI: 0000000000000005
[   30.701140][  T421] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078
[   30.701424][  T421] R10: 00007fd7d632eef8 R11: 0000000000000246 R12: 0000000000000002


Finger prints:
default_operstate:rfc2863_policy:linkwatch_do_dev:netdev_run_todo:rtnl_dellink