======================================
| [  176.328686][ T1120] 1 lock held by nft/1120:
| [ 176.328850][ T1120] #0: ffff88800665bec8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nf_tables_valid_genid (./include/linux/jiffies.h:101 net/netfilter/nf_tables_api.c:10954) nf_tables
| [  176.329260][ T1120]
| [  176.329260][ T1120] stack backtrace:
[  176.329705][ T1120] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  176.330053][ T1120] Call Trace:
[  176.330179][ T1120]  <TASK>
[ 176.330269][ T1120] dump_stack_lvl (lib/dump_stack.c:123) 
[ 176.330437][ T1120] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 176.330614][ T1120] nft_set_lookup.part.0 (net/netfilter/nf_tables_api.c:4467) nf_tables
[ 176.330839][ T1120] nf_tables_newset (net/netfilter/nf_tables_api.c:5230) nf_tables
[ 176.331068][ T1120] ? __pfx_nf_tables_newset (net/netfilter/nf_tables_api.c:5072) nf_tables
[ 176.331296][ T1120] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 176.331464][ T1120] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 176.331625][ T1120] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 176.331787][ T1120] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 176.331952][ T1120] nfnetlink_rcv_batch (net/netfilter/nfnetlink.c:524) 
[ 176.332128][ T1120] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 176.332287][ T1120] ? __pfx_nfnetlink_rcv_batch (net/netfilter/nfnetlink.c:373) 
[ 176.332447][ T1120] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 176.332611][ T1120] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 176.332769][ T1120] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 176.332940][ T1120] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 176.333117][ T1120] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 176.333277][ T1120] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 176.333438][ T1120] ? __nla_validate_parse (./include/net/netlink.h:1267 (discriminator 1) lib/nlattr.c:622 (discriminator 1)) 
[ 176.333603][ T1120] nfnetlink_rcv (net/netfilter/nfnetlink.c:647 net/netfilter/nfnetlink.c:665) 
[ 176.333765][ T1120] ? __pfx_nfnetlink_rcv (net/netfilter/nfnetlink.c:651) 
[ 176.333926][ T1120] ? 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) 
[ 176.334091][ T1120] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 176.334255][ T1120] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 176.334420][ T1120] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 176.334585][ T1120] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 176.334749][ T1120] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) 
[ 176.334918][ T1120] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) 
[ 176.335080][ T1120] ? __pfx_____sys_sendmsg (net/socket.c:2553) 
[ 176.335238][ T1120] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) 
[ 176.335449][ T1120] ___sys_sendmsg (net/socket.c:2663) 
[ 176.335610][ T1120] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 176.335771][ T1120] ? __pfx____sys_sendmsg (net/socket.c:2650) 
[ 176.335933][ T1120] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 176.336097][ T1120] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[ 176.336257][ T1120] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 176.336420][ T1120] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 176.336583][ T1120] ? do_sock_getsockopt (net/socket.c:2388) 
[ 176.336743][ T1120] ? do_sock_setsockopt (net/socket.c:2303) 
[ 176.336902][ T1120] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 176.337068][ T1120] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) 
[ 176.337196][ T1120] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) 
[ 176.337359][ T1120] ? __pfx___sys_sendmsg (net/socket.c:2678) 
[ 176.337523][ T1120] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 176.337700][ T1120] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 176.337863][ T1120] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  176.338063][ T1120] RIP: 0033:0x7f19cc2077b7
[ 176.338282][ T1120] 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)
[  176.338832][ T1120] RSP: 002b:00007ffe556876e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  176.339077][ T1120] RAX: ffffffffffffffda RBX: 00007ffe556988e0 RCX: 00007f19cc2077b7
[  176.339317][ T1120] RDX: 0000000000000000 RSI: 00007ffe556987a0 RDI: 0000000000000005
[  176.339553][ T1120] RBP: 00007ffe55698890 R08: 00007ffe556876cc R09: 00007ffe556876f0
[  176.339797][ T1120] R10: 00007f19cc0c0708 R11: 0000000000000246 R12: 00007ffe556987e0
[  176.340033][ T1120] R13: 0000000000000800 R14: 0000000000000005 R15: 00007ffe55687700
| [  176.792748][ T1122] 1 lock held by nft/1122:
| [ 176.792908][ T1122] #0: ffff88800665bec8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nf_tables_valid_genid (./include/linux/jiffies.h:101 net/netfilter/nf_tables_api.c:10954) nf_tables
| [  176.794248][ T1122]
| [  176.794248][ T1122] stack backtrace:
[  176.794681][ T1122] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  176.795026][ T1122] Call Trace:
[  176.795151][ T1122]  <TASK>
[ 176.795240][ T1122] dump_stack_lvl (lib/dump_stack.c:123) 
[ 176.795414][ T1122] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 176.795579][ T1122] nft_set_flush.constprop.0 (net/netfilter/nf_tables_api.c:7495 net/netfilter/nf_tables_api.c:7519) nf_tables
[ 176.795805][ T1122] ? __pfx_nft_set_flush.constprop.0 (net/netfilter/nf_tables_api.c:7509) nf_tables
[ 176.796074][ T1122] ? __pfx_nft_setelem_flush (net/netfilter/nf_tables_api.c:7445) nf_tables
[ 176.796293][ T1122] ? nla_strcmp (./include/net/netlink.h:1256 lib/nlattr.c:875) 
[ 176.796424][ T1122] nf_tables_delsetelem (net/netfilter/nf_tables_api.c:7560) nf_tables
[ 176.796652][ T1122] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 176.796811][ T1122] ? __pfx_nf_tables_delsetelem (net/netfilter/nf_tables_api.c:7527) nf_tables
[ 176.797027][ T1122] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 176.797189][ T1122] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 176.797353][ T1122] nfnetlink_rcv_batch (net/netfilter/nfnetlink.c:524) 
[ 176.797523][ T1122] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 176.797679][ T1122] ? __pfx_nfnetlink_rcv_batch (net/netfilter/nfnetlink.c:373) 
[ 176.797840][ T1122] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 176.798001][ T1122] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 176.798155][ T1122] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 176.798326][ T1122] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 176.798490][ T1122] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 176.798656][ T1122] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 176.798817][ T1122] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 176.798974][ T1122] ? __nla_validate_parse (./include/net/netlink.h:1267 (discriminator 1) lib/nlattr.c:622 (discriminator 1)) 
[ 176.799139][ T1122] nfnetlink_rcv (net/netfilter/nfnetlink.c:647 net/netfilter/nfnetlink.c:665) 
[ 176.799299][ T1122] ? __pfx_nfnetlink_rcv (net/netfilter/nfnetlink.c:651) 
[ 176.799457][ T1122] ? 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) 
[ 176.799618][ T1122] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 176.799781][ T1122] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 176.799944][ T1122] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 176.800106][ T1122] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 176.800267][ T1122] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) 
[ 176.800431][ T1122] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) 
[ 176.800598][ T1122] ? __pfx_____sys_sendmsg (net/socket.c:2553) 
[ 176.800754][ T1122] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) 
[ 176.800961][ T1122] ___sys_sendmsg (net/socket.c:2663) 
[ 176.801117][ T1122] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 176.801275][ T1122] ? __pfx____sys_sendmsg (net/socket.c:2650) 
[ 176.801437][ T1122] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 176.801599][ T1122] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[ 176.801759][ T1122] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 176.801916][ T1122] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 176.802078][ T1122] ? do_sock_getsockopt (net/socket.c:2388) 
[ 176.802236][ T1122] ? do_sock_setsockopt (net/socket.c:2303) 
[ 176.802397][ T1122] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 176.802558][ T1122] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) 
[ 176.802683][ T1122] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) 
[ 176.802841][ T1122] ? __pfx___sys_sendmsg (net/socket.c:2678) 
[ 176.803002][ T1122] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 176.803174][ T1122] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 176.803334][ T1122] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  176.803533][ T1122] RIP: 0033:0x7f7576fa67b7
[ 176.803698][ T1122] 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)
[  176.804238][ T1122] RSP: 002b:00007ffcc4460218 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  176.804474][ T1122] RAX: ffffffffffffffda RBX: 00007ffcc4471410 RCX: 00007f7576fa67b7
[  176.804708][ T1122] RDX: 0000000000000000 RSI: 00007ffcc44712d0 RDI: 0000000000000005
[  176.804941][ T1122] RBP: 00007ffcc44713c0 R08: 00007ffcc44601fc R09: 00007ffcc4460220
[  176.805175][ T1122] R10: 00007f7576e5f708 R11: 0000000000000246 R12: 00007ffcc4471310


Finger prints:
lockdep_rcu_suspicious:nf_tables_delsetelem:nfnetlink_rcv_batch:nfnetlink_rcv:netlink_unicast
lockdep_rcu_suspicious:nf_tables_newset:nfnetlink_rcv_batch:nfnetlink_rcv:netlink_unicast