======================================
| [ 208.048371][ T1110] #0: ffff8880165556c0 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: __netlink_dump_start (net/netlink/af_netlink.c:2342) 
| [ 208.048911][ T1110] #1: ffffffff98d5c860 (rcu_read_lock){....}-{1:2}, at: inet_dump_fib (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/ipv4/fib_frontend.c:1003) 
| [  208.049395][ T1110]
| [  208.049395][ T1110] stack backtrace:
[  208.050057][ T1110] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  208.050664][ T1110] Call Trace:
[  208.050841][ T1110]  <TASK>
[ 208.050993][ T1110] dump_stack_lvl (lib/dump_stack.c:107) 
[ 208.051228][ T1110] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6713) 
[ 208.051505][ T1110] fib_add_multipath (./include/net/nexthop.h:320 net/ipv4/fib_semantics.c:1750) 
[ 208.051775][ T1110] fib_dump_info (net/ipv4/fib_semantics.c:1850) 
[ 208.052018][ T1110] ? kasan_save_stack (mm/kasan/common.c:48) 
[ 208.052275][ T1110] ? __pfx_fib_dump_info (net/ipv4/fib_semantics.c:1782) 
[ 208.052549][ T1110] ? __nla_validate_parse (lib/nlattr.c:634) 
[ 208.052829][ T1110] fn_trie_dump_leaf (net/ipv4/fib_trie.c:2328) 
[ 208.053097][ T1110] ? __pfx_ip_valid_fib_dump_req (net/ipv4/fib_frontend.c:913) 
[ 208.053397][ T1110] ? __pfx_fn_trie_dump_leaf (net/ipv4/fib_trie.c:2272) 
[ 208.053683][ T1110] ? leaf_walk_rcu (net/ipv4/fib_trie.c:1821 (discriminator 5)) 
[  208
DETECTED CRASH, lowering timeout
.053937][ T1110] fib_table_dump (net/ipv4/fib_trie.c:2377) 
[ 208.054183][ T1110] ? __pfx_fib_table_dump (net/ipv4/fib_trie.c:2358) 
[ 208.054462][ T1110] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 44)) 
[ 208.054699][ T1110] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 208.054943][ T1110] ? inet_dump_fib (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 net/ipv4/fib_frontend.c:1003) 
[ 208.055192][ T1110] inet_dump_fib (net/ipv4/fib_frontend.c:1028) 
[ 208.055431][ T1110] ? __build_skb_around (./arch/x86/include/asm/atomic.h:28 ./include/linux/atomic/atomic-arch-fallback.h:503 ./include/linux/atomic/atomic-instrumented.h:68 net/core/skbuff.c:383 net/core/skbuff.c:440) 
[ 208.055699][ T1110] ? __alloc_skb (net/core/skbuff.c:685) 
[ 208.055941][ T1110] ? __pfx_inet_dump_fib (net/ipv4/fib_frontend.c:989) 
[ 208.056210][ T1110] ? __lock_acquired (kernel/locking/lockdep.c:339 kernel/locking/lockdep.c:5991) 
[ 208.056461][ T1110] ? __pfx___lock_acquired (kernel/locking/lockdep.c:5959) 
[ 208.056740][ T1110] netlink_dump (net/netlink/af_netlink.c:2268) 
[ 208.056973][ T1110] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 44)) 
[ 208.057247][ T1110] ? __pfx_netlink_dump (net/netlink/af_netlink.c:2196) 
[ 208.057499][ T1110] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 208.057744][ T1110] ? 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) 
[ 208.057998][ T1110] ? __pfx___netlink_lookup (net/netlink/af_netlink.c:512) 
[ 208.058273][ T1110] ? netlink_lookup (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/netlink/af_netlink.c:539) 
[ 208.058533][ T1110] __netlink_dump_start (./include/linux/instrumented.h:96 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:261 ./include/linux/refcount.h:304 ./include/linux/refcount.h:322 ./include/net/sock.h:1974 net/netlink/af_netlink.c:2378) 
[ 208.058802][ T1110] rtnetlink_rcv_msg (net/core/rtnetlink.c:6560) 
[ 208.059056][ T1110] ? __pfx_inet_dump_fib (net/ipv4/fib_frontend.c:989) 
[ 208.059317][ T1110] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6494) 
[ 208.059595][ T1110] ? __pfx_inet_dump_fib (net/ipv4/fib_frontend.c:989) 
[ 208.059863][ T1110] ? __lock_acquire (kernel/locking/lockdep.c:5137) 
[ 208.060173][ T1110] netlink_rcv_skb (net/netlink/af_netlink.c:2549) 
[ 208.060417][ T1110] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6494) 
[ 208.060704][ T1110] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2526) 
[ 208.060996][ T1110] ? __pfx___netlink_lookup (net/netlink/af_netlink.c:512) 
[ 208.061267][ T1110] ? lock_acquire (./include/trace/events/lock.h:24 kernel/locking/lockdep.c:5725) 
[ 208.061507][ T1110] ? netlink_deliver_tap (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 208.061769][ T1110] ? netlink_deliver_tap (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 208.062039][ T1110] ? netlink_deliver_tap (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 net/netlink/af_netlink.c:340) 
[ 208.062319][ T1110] netlink_unicast (net/netlink/af_netlink.c:1337 net/netlink/af_netlink.c:1363) 
[ 208.062572][ T1110] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1348) 
[ 208.062839][ T1110] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 208.063116][ T1110] netlink_sendmsg (net/netlink/af_netlink.c:1904) 
[ 208.063403][ T1110] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1823) 
[ 208.063733][ T1110] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 208.064064][ T1110] __sys_sendto (net/socket.c:730 net/socket.c:745 net/socket.c:2191) 
[ 208.064316][ T1110] ? __pfx___sys_sendto (net/socket.c:2161) 
[ 208.064594][ T1110] ? do_user_addr_fault (./include/linux/rcupdate.h:298 ./include/linux/rcupdate.h:750 ./include/linux/mm.h:686 arch/x86/mm/fault.c:1366) 
[ 208.064949][ T1110] ? 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) 
[ 208.065268][ T1110] ? __lock_release (kernel/locking/lockdep.c:353 kernel/locking/lockdep.c:5436) 
[ 208.065616][ T1110] ? __pfx___lock_release (kernel/locking/lockdep.c:5406) 
[ 208.065987][ T1110] ? __up_read (./arch/x86/include/asm/atomic64_64.h:79 ./include/linux/atomic/atomic-arch-fallback.h:2735 ./include/linux/atomic/atomic-long.h:184 ./include/linux/atomic/atomic-instrumented.h:3289 kernel/locking/rwsem.c:1347) 
[ 208.066315][ T1110] ? __pfx___up_read (kernel/locking/rwsem.c:1339) 
[ 208.066662][ T1110] ? do_user_addr_fault (./include/linux/rcupdate.h:308 ./include/linux/rcupdate.h:783 ./include/linux/mm.h:688 arch/x86/mm/fault.c:1366) 
[ 208.067043][ T1110] __x64_sys_sendto (net/socket.c:2199) 
[ 208.067391][ T1110] ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:4300 kernel/locking/lockdep.c:4359) 
[ 208.067855][ T1110] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 208.068183][ T1110] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:129) 
[  208.068605][ T1110] RIP: 0033:0x7f33363bd700
[ 208.068923][ T1110] Code: ff ff 64 89 02 eb bd 0f 1f 00 f3 0f 1e fa 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 1d 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 68 c3 0f 1f 80 00 00 00 00 41 54 48 83 ec 20
All code
========
   0:	ff                   	(bad)
   1:	ff 64 89 02          	jmp    *0x2(%rcx,%rcx,4)
   5:	eb bd                	jmp    0xffffffffffffffc4
   7:	0f 1f 00             	nopl   (%rax)
   a:	f3 0f 1e fa          	endbr64
   e:	41 89 ca             	mov    %ecx,%r10d
  11:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  18:	00 
  19:	85 c0                	test   %eax,%eax
  1b:	75 1d                	jne    0x3a
  1d:	45 31 c9             	xor    %r9d,%r9d
  20:	45 31 c0             	xor    %r8d,%r8d
  23:	b8 2c 00 00 00       	mov    $0x2c,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 68                	ja     0x9a
  32:	c3                   	ret
  33:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  3a:	41 54                	push   %r12
  3c:	48 83 ec 20          	sub    $0x20,%rsp

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 68                	ja     0x70
   8:	c3                   	ret
   9:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  10:	41 54                	push   %r12
  12:	48 83 ec 20          	sub    $0x20,%rsp
[  208.070276][ T1110] RSP: 002b:00007ffd241cf658 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
[  208.070863][ T1110] RAX: ffffffffffffffda RBX: 0000000000495540 RCX: 00007f33363bd700
[  208.071385][ T1110] RDX: 000000000000009c RSI: 00007ffd241cf660 RDI: 0000000000000005
[  208.071831][ T1110] RBP: 00007ffd241cf660 R08: 0000000000000000 R09: 0000000000000000
[  208.072374][ T1110] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd241cf968


Finger prints:
dump_stack_lvl:lockdep_rcu_suspicious:fib_add_multipath:fib_dump_info