======================================
| [  186.148946][ T1126] 1 lock held by nft/1126:
| [ 186.149105][ T1126] #0: ffff888007a7eec8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nf_tables_valid_genid (./include/linux/jiffies.h:101 net/netfilter/nf_tables_api.c:10957) nf_tables
| [  186.149517][ T1126]
| [  186.149517][ T1126] stack backtrace:
[  186.150013][ T1126] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  186.150622][ T1126] Call Trace:
[  186.150749][ T1126]  <TASK>
[ 186.150846][ T1126] dump_stack_lvl (lib/dump_stack.c:123) 
[ 186.151024][ T1126] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 186.151189][ T1126] nft_set_lookup.part.0 (net/netfilter/nf_tables_api.c:4470) nf_tables
[ 186.151420][ T1126] nf_tables_newset (net/netfilter/nf_tables_api.c:5233) nf_tables
[ 186.151660][ T1126] ? __pfx_nf_tables_newset (net/netfilter/nf_tables_api.c:5075) nf_tables
[ 186.151903][ T1126] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 186.152079][ T1126] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 186.152241][ T1126] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 186.152403][ T1126] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 186.152568][ T1126] nfnetlink_rcv_batch (net/netfilter/nfnetlink.c:524) 
[ 186.152741][ T1126] ? __pfx_nfnetlink_rcv_batch (net/netfilter/nfnetlink.c:373) 
[ 186.152901][ T1126] ? rcu_read_lock_any_held (kernel/rcu/update.c:387 kernel/rcu/update.c:380) 
[ 186.153061][ T1126] ? find_stack (lib/stackdepot.c:552 (discriminator 1)) 
[ 186.153228][ T1126] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 186.153383][ T1126] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 186.153559][ T1126] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 186.153740][ T1126] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 186.153902][ T1126] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 186.154057][ T1126] ? __nla_validate_parse (./include/net/netlink.h:1267 (discriminator 1) lib/nlattr.c:622 (discriminator 1)) 
[ 186.154223][ T1126] nfnetlink_rcv (net/netfilter/nfnetlink.c:647 net/netfilter/nfnetlink.c:665) 
[ 186.154379][ T1126] ? __pfx_nfnetlink_rcv (net/netfilter/nfnetlink.c:651) 
[ 186.154544][ T1126] ? 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) 
[ 186.154708][ T1126] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 186.154870][ T1126] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 186.155042][ T1126] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 186.155204][ T1126] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 186.155365][ T1126] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) 
[ 186.155530][ T1126] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) 
[ 186.155691][ T1126] ? __pfx_____sys_sendmsg (net/socket.c:2553) 
[ 186.155854][ T1126] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) 
[ 186.156064][ T1126] ___sys_sendmsg (net/socket.c:2663) 
[ 186.156221][ T1126] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 186.156384][ T1126] ? __pfx____sys_sendmsg (net/socket.c:2650) 
[ 186.156546][ T1126] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 186.156704][ T1126] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[ 186.156864][ T1126] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 186.157025][ T1126] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 186.157190][ T1126] ? do_sock_getsockopt (net/socket.c:2388) 
[ 186.157358][ T1126] ? do_sock_setsockopt (net/socket.c:2303) 
[ 186.157518][ T1126] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 186.157685][ T1126] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) 
[ 186.157812][ T1126] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) 
[ 186.157970][ T1126] ? __pfx___sys_sendmsg (net/socket.c:2678) 
[ 186.158130][ T1126] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 186.158306][ T1126] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 186.158480][ T1126] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  186.158684][ T1126] RIP: 0033:0x7f2977bdc7b7
[ 186.158852][ T1126] 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)
[  186.159399][ T1126] RSP: 002b:00007ffd9ac5f8d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  186.159637][ T1126] RAX: ffffffffffffffda RBX: 00007ffd9ac70ad0 RCX: 00007f2977bdc7b7
[  186.159887][ T1126] RDX: 0000000000000000 RSI: 00007ffd9ac70990 RDI: 0000000000000005
[  186.160124][ T1126] RBP: 00007ffd9ac70a80 R08: 00007ffd9ac5f8bc R09: 00007ffd9ac5f8e0
[  186.160364][ T1126] R10: 00007f2977a95708 R11: 0000000000000246 R12: 00007ffd9ac709d0
[  186.160603][ T1126] R13: 0000000000002400 R14: 0000000000000005 R15: 00007ffd9ac5f8f0
| [  186.163376][ T1126] 1 lock held by nft/1126:
| [ 186.163558][ T1126] #0: ffff888007a7eec8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nf_tables_valid_genid (./include/linux/jiffies.h:101 net/netfilter/nf_tables_api.c:10957) nf_tables
| [  186.163981][ T1126]
| [  186.163981][ T1126] stack backtrace:
[  186.164458][ T1126] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  186.164829][ T1126] Call Trace:
[  186.164966][ T1126]  <TASK>
[ 186.165066][ T1126] dump_stack_lvl (lib/dump_stack.c:123) 
[ 186.165243][ T1126] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 186.165420][ T1126] nft_bitmap_elem_find (net/netfilter/nft_set_bitmap.c:97 (discriminator 7)) nf_tables
[ 186.165663][ T1126] nft_bitmap_insert (net/netfilter/nft_set_bitmap.c:136) nf_tables
[ 186.165911][ T1126] nft_add_set_elem (net/netfilter/nf_tables_api.c:6711 net/netfilter/nf_tables_api.c:7153) nf_tables
[ 186.166155][ T1126] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 186.166338][ T1126] ? __pfx_nft_add_set_elem (net/netfilter/nf_tables_api.c:6843) nf_tables
[ 186.166585][ T1126] ? 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) 
[ 186.166765][ T1126] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) 
[ 186.166894][ T1126] ? net_generic (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48) nf_tables
[ 186.167095][ T1126] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 186.167277][ T1126] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 186.167460][ T1126] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 186.167629][ T1126] ? net_generic (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48) nf_tables
[ 186.167819][ T1126] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 186.167988][ T1126] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 186.168157][ T1126] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 186.168334][ T1126] ? net_generic (./include/net/netns/generic.h:51) nf_tables
[ 186.168526][ T1126] ? nft_set_lookup_global (./include/net/netlink.h:1703 net/netfilter/nf_tables_api.c:4497 net/netfilter/nf_tables_api.c:4525) nf_tables
[ 186.168767][ T1126] nf_tables_newsetelem (net/netfilter/nf_tables_api.c:7278) nf_tables
[ 186.168999][ T1126] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 186.169168][ T1126] ? __pfx_nf_tables_newsetelem (net/netfilter/nf_tables_api.c:7242) nf_tables
[ 186.169400][ T1126] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 186.169574][ T1126] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 186.169755][ T1126] nfnetlink_rcv_batch (net/netfilter/nfnetlink.c:524) 
[ 186.169938][ T1126] ? __pfx_nfnetlink_rcv_batch (net/netfilter/nfnetlink.c:373) 
[ 186.170111][ T1126] ? rcu_read_lock_any_held (kernel/rcu/update.c:387 kernel/rcu/update.c:380) 
[ 186.170284][ T1126] ? find_stack (lib/stackdepot.c:552 (discriminator 1)) 
[ 186.170460][ T1126] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 186.170627][ T1126] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 186.170814][ T1126] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 186.171007][ T1126] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 186.171178][ T1126] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 186.171343][ T1126] ? __nla_validate_parse (./include/net/netlink.h:1267 (discriminator 1) lib/nlattr.c:622 (discriminator 1)) 
[ 186.171523][ T1126] nfnetlink_rcv (net/netfilter/nfnetlink.c:647 net/netfilter/nfnetlink.c:665) 
[ 186.171705][ T1126] ? __pfx_nfnetlink_rcv (net/netfilter/nfnetlink.c:651) 
[ 186.171877][ T1126] ? 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) 
[ 186.172054][ T1126] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 186.172226][ T1126] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 186.172407][ T1126] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 186.172582][ T1126] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 186.172754][ T1126] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) 
[ 186.172935][ T1126] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) 
[ 186.173106][ T1126] ? __pfx_____sys_sendmsg (net/socket.c:2553) 
[ 186.173277][ T1126] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) 
[ 186.173499][ T1126] ___sys_sendmsg (net/socket.c:2663) 
[ 186.173670][ T1126] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 186.173841][ T1126] ? __pfx____sys_sendmsg (net/socket.c:2650) 
[ 186.174015][ T1126] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 186.174188][ T1126] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[ 186.174362][ T1126] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 186.174534][ T1126] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 186.174716][ T1126] ? do_sock_getsockopt (net/socket.c:2388) 
[ 186.174887][ T1126] ? do_sock_setsockopt (net/socket.c:2303) 
[ 186.175058][ T1126] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 186.175232][ T1126] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) 
[ 186.175371][ T1126] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) 
[ 186.175538][ T1126] ? __pfx___sys_sendmsg (net/socket.c:2678) 
[ 186.175712][ T1126] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 186.175895][ T1126] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 186.176071][ T1126] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  186.176285][ T1126] RIP: 0033:0x7f2977bdc7b7
[ 186.176465][ T1126] 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)
[  186.177218][ T1126] RSP: 002b:00007ffd9ac5f8d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  186.177476][ T1126] RAX: ffffffffffffffda RBX: 00007ffd9ac70ad0 RCX: 00007f2977bdc7b7
[  186.177734][ T1126] RDX: 0000000000000000 RSI: 00007ffd9ac70990 RDI: 0000000000000005
[  186.178086][ T1126] RBP: 00007ffd9ac70a80 R08: 00007ffd9ac5f8bc R09: 00007ffd9ac5f8e0
[  186.178338][ T1126] R10: 00007f2977a95708 R11: 0000000000000246 R12: 00007ffd9ac709d0


Finger prints:
lockdep_rcu_suspicious:nft_bitmap_elem_find:nft_bitmap_insert:nft_add_set_elem:nf_tables_newsetelem
lockdep_rcu_suspicious:nf_tables_newset:nfnetlink_rcv_batch:nfnetlink_rcv:netlink_unicast