======================================
| [  759.377427] #PF: supervisor read access in kernel mode
| [  759.377495] #PF: error_code(0x0000) - not-present page
| [  759.377548] PGD 8b41067 P4D 8b41067 PUD 8212067 PMD 0
| [  759.377611] Oops: Oops: 0000 [#1] SMP
[  759.377762] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  759.377835] RIP: 0010:ip_route_output_key_hash_rcu (net/ipv4/route.c:2663 net/ipv4/route.c:2871) 
[ 759.377919] Code: 49 8b 06 ba 05 00 00 00 48 8b 80 08 01 00 00 48 8b 80 d0 03 00 00 e9 a8 f9 ff ff e8 8e 42 83 ff e9 61 fc ff ff 49 8b 44 24 18 <48> 8b 40 58 48 89 c2 48 83 ca 01 49 89 55 10 48 3d 60 57 6e b8 0f
All code
========
   0:	49 8b 06             	mov    (%r14),%rax
   3:	ba 05 00 00 00       	mov    $0x5,%edx
   8:	48 8b 80 08 01 00 00 	mov    0x108(%rax),%rax
   f:	48 8b 80 d0 03 00 00 	mov    0x3d0(%rax),%rax
  16:	e9 a8 f9 ff ff       	jmp    0xfffffffffffff9c3
  1b:	e8 8e 42 83 ff       	call   0xffffffffff8342ae
  20:	e9 61 fc ff ff       	jmp    0xfffffffffffffc86
  25:	49 8b 44 24 18       	mov    0x18(%r12),%rax
  2a:*	48 8b 40 58          	mov    0x58(%rax),%rax		<-- trapping instruction
  2e:	48 89 c2             	mov    %rax,%rdx
  31:	48 83 ca 01          	or     $0x1,%rdx
  35:	49 89 55 10          	mov    %rdx,0x10(%r13)
  39:	48 3d 60 57 6e b8    	cmp    $0xffffffffb86e5760,%rax
  3f:	0f                   	.byte 0xf

Code starting with the faulting instruction
===========================================
   0:	48 8b 40 58          	mov    0x58(%rax),%rax
   4:	48 89 c2             	mov    %rax,%rdx
   7:	48 83 ca 01          	or     $0x1,%rdx
   b:	49 89 55 10          	mov    %rdx,0x10(%r13)
   f:	48 3d 60 57 6e b8    	cmp    $0xffffffffb86e5760,%rax
  15:	0f                   	.byte 0xf
[  759.378115] RSP: 0018:ffffb87a4151bd68 EFLAGS: 00010246
[  759.378176] RAX: 0000000000000000 RBX: ffff8f8f06e410f8 RCX: 0000000000000007
[  759.378258] RDX: 0000000000000000 RSI: ffffffffb94463a4 RDI: 0000000000000006
[  759.378341] RBP: ffff8f8f02be3000 R08: 0000000000000000 R09: 0000000090000000
[  759.378420] R10: 0000000000000000 R11: 0000000000000003 R12: ffffb87a4151bdc8
[  759.378499] R13: ffff8f8f03322f00 R14: ffff8f8f02c08200 R15: 0000000000000004
[  759.378581] FS:  00007fe07f653300(0000) GS:ffff8f8f85967000(0000) knlGS:0000000000000000
[  759.378671] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  759.378742] CR2: 0000000000000058 CR3: 0000000006d4b002 CR4: 0000000000772ef0
[  759.378828] PKRU: 55555554
[  759.378860] Call Trace:
[  759.378888]  <TASK>
[  759.378934] ip_route_output_key_hash (net/ipv4/route.c:2701) 
[  759.379001] __ip4_datagram_connect (./include/net/route.h:169 ./include/net/route.h:348 net/ipv4/datagram.c:49) 
[  759.379063] udp_connect (net/ipv4/udp.c:2153) 
[  759.379111] __sys_connect (./include/linux/file.h:62 ./include/linux/file.h:83 net/socket.c:2095) 
[  759.379159] ? prepare_creds (kernel/cred.c:212) 
[  759.379215] ? commit_creds (kernel/cred.c:459) 
[  759.379262] ? __x64_sys_capset (kernel/capability.c:258 kernel/capability.c:216 kernel/capability.c:216) 
[  759.379310] __x64_sys_connect (net/socket.c:2111 net/socket.c:2108 net/socket.c:2108) 
[  759.379359] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[  759.379407] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  759.379470] RIP: 0033:0x7fe07f8e9d77
[ 759.379517] Code: 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2a 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 18 89 54 24 0c 48 89 34 24 89
All code
========
   0:	64 89 01             	mov    %eax,%fs:(%rcx)
   3:	48 83 c8 ff          	or     $0xffffffffffffffff,%rax
   7:	c3                   	ret
   8:	66 2e 0f 1f 84 00 00 	cs nopw 0x0(%rax,%rax,1)
   f:	00 00 00 
  12:	90                   	nop
  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 2a 00 00 00       	mov    $0x2a,%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 18          	sub    $0x18,%rsp
  37:	89 54 24 0c          	mov    %edx,0xc(%rsp)
  3b:	48 89 34 24          	mov    %rsi,(%rsp)
  3f:	89                   	.byte 0x89

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 18          	sub    $0x18,%rsp
   d:	89 54 24 0c          	mov    %edx,0xc(%rsp)
  11:	48 89 34 24          	mov    %rsi,(%rsp)
  15:	89                   	.byte 0x89
[  759.379707] RSP: 002b:00007ffc2d6692a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
[  759.379789] RAX: ffffffffffffffda RBX: 00007ffc2d66a986 RCX: 00007fe07f8e9d77
[  759.379870] RDX: 0000000000000010 RSI: 00007ffc2d669310 RDI: 0000000000000007
[  759.379949] RBP: 00007ffc2d669960 R08: 000000001140c710 R09: 0000000000000000
[  759.380030] R10: 00007fe07f7e15a0 R11: 0000000000000246 R12: 00007ffc2d669cb8
[  759.380111] R13: 000000000040305a R14: 0000000000415dd0 R15: 00007fe07fa55000
| [  759.381752] Voluntary context switch within RCU read-side critical section!
| [  759.381764] WARNING: CPU: 3 PID: 16475 at kernel/rcu/tree_plugin.h:332 rcu_note_context_switch (kernel/rcu/tree_plugin.h:332 (discriminator 11)) 
| [  759.381943] Modules linked in: ip6_gre ip6_tunnel tunnel6 cls_matchall ip_gre gre act_mirred sch_tbf sch_prio act_gact cls_flower vxlan ip6_udp_tunnel udp_tunnel bridge stp llc 8021q sch_ingress vrf veth
| [  759.382236] Tainted: [D]=DIE
[  759.382277] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  759.382347] RIP: 0010:rcu_note_context_switch (kernel/rcu/tree_plugin.h:332 (discriminator 11)) 
[ 759.382409] Code: 00 00 00 be 01 00 00 00 48 89 ef e8 e9 e3 fe ff e9 43 fc ff ff c6 05 73 7d 27 01 01 90 48 c7 c7 e8 74 8f b8 e8 b0 25 f6 ff 90 <0f> 0b 90 90 e9 b9 fb ff ff 80 7b 11 00 0f 84 40 fe ff ff 90 0f 0b
All code
========
   0:	00 00                	add    %al,(%rax)
   2:	00 be 01 00 00 00    	add    %bh,0x1(%rsi)
   8:	48 89 ef             	mov    %rbp,%rdi
   b:	e8 e9 e3 fe ff       	call   0xfffffffffffee3f9
  10:	e9 43 fc ff ff       	jmp    0xfffffffffffffc58
  15:	c6 05 73 7d 27 01 01 	movb   $0x1,0x1277d73(%rip)        # 0x1277d8f
  1c:	90                   	nop
  1d:	48 c7 c7 e8 74 8f b8 	mov    $0xffffffffb88f74e8,%rdi
  24:	e8 b0 25 f6 ff       	call   0xfffffffffff625d9
  29:	90                   	nop
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	90                   	nop
  2d:	90                   	nop
  2e:	e9 b9 fb ff ff       	jmp    0xfffffffffffffbec
  33:	80 7b 11 00          	cmpb   $0x0,0x11(%rbx)
  37:	0f 84 40 fe ff ff    	je     0xfffffffffffffe7d
  3d:	90                   	nop
  3e:	0f 0b                	ud2

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	90                   	nop
   3:	90                   	nop
   4:	e9 b9 fb ff ff       	jmp    0xfffffffffffffbc2
   9:	80 7b 11 00          	cmpb   $0x0,0x11(%rbx)
   d:	0f 84 40 fe ff ff    	je     0xfffffffffffffe53
  13:	90                   	nop
  14:	0f 0b                	ud2
[  759.382584] RSP: 0018:ffffb87a4151bcf0 EFLAGS: 00010082
[  759.382638] RAX: 0000000000000000 RBX: ffff8f8f3eda9140 RCX: 00000000ffffdfff
[  759.382720] RDX: 0000000000000000 RSI: 00000000ffffffea RDI: 0000000000000001
[  759.382802] RBP: ffff8f8f03084500 R08: ffffffffb8d56248 R09: 00000000ffffdfff
[  759.382885] R10: ffffffffb8c76260 R11: ffffffffb8d2abb0 R12: 0000000000000000
[  759.382968] R13: 0000000000000000 R14: ffff8f8f3eda83c0 R15: 0000000000000000
[  759.383046] FS:  0000000000000000(0000) GS:ffff8f8f85967000(0000) knlGS:0000000000000000
[  759.383137] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  759.383213] CR2: 0000000000000058 CR3: 0000000010841003 CR4: 0000000000772ef0
[  759.383298] PKRU: 55555554
[  759.383324] Call Trace:
[  759.383354]  <TASK>
[  759.383390] __schedule (./arch/x86/include/asm/preempt.h:80 kernel/sched/core.c:634 kernel/sched/sched.h:1519 kernel/sched/sched.h:1841 kernel/sched/core.c:6865) 
[  759.383446] schedule (./arch/x86/include/asm/preempt.h:85 kernel/sched/core.c:7044 kernel/sched/core.c:7058) 
[  759.383494] __lock_sock (./include/linux/spinlock.h:356 net/core/sock.c:3173) 
[  759.383544] ? housekeeping_test_cpu (kernel/sched/wait.c:402) 
[  759.383607] __lock_sock_fast (./include/linux/spinlock.h:396 net/core/sock.c:3788) 
[  759.383648] udp_destroy_sock (./include/net/sock.h:1703 net/ipv4/udp.c:2887) 
[  759.383690] sk_common_release (net/core/sock.c:3942) 
[  759.383738] inet_release (net/ipv4/af_inet.c:436) 
[  759.383779] __sock_release (net/socket.c:650) 
[  759.383822] sock_close (net/socket.c:1441) 
[  759.383869] __fput (fs/file_table.c:469) 
[  759.383920] task_work_run (./include/linux/sched.h:2070 (discriminator 1) kernel/task_work.c:229 (discriminator 1)) 
[  759.383969] do_exit (kernel/exit.c:962) 
[  759.384016] make_task_dead (kernel/exit.c:1050) 
[  759.384064] rewind_stack_and_make_dead (??:?) 
[  759.384121] RIP: 0033:0x7fe07f8e9d77
[ 759.384169] Code: Unable to access opcode bytes at 0x7fe07f8e9d4d.

Code starting with the faulting instruction
===========================================
[  759.384237] RSP: 002b:00007ffc2d6692a8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
[  759.384327] RAX: ffffffffffffffda RBX: 00007ffc2d66a986 RCX: 00007fe07f8e9d77
[  759.384411] RDX: 0000000000000010 RSI: 00007ffc2d669310 RDI: 0000000000000007
[  759.384494] RBP: 00007ffc2d669960 R08: 000000001140c710 R09: 0000000000000000
[  759.384576] R10: 00007fe07f7e15a0 R11: 0000000000000246 R12: 00007ffc2d669cb8


Finger prints:
rcu_note_context_switch:__schedule:schedule:__lock_sock:__lock_sock_fast
ip_route_output_key_hash_rcu:ip_route_output_key_hash:__ip4_datagram_connect:udp_connect:__sys_connect