======================================
| [   44.475023][  T312] 1 lock held by nft/312:
| [ 44.475175][ T312] #0: ffff888005bf14c8 (&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
| [   44.475663][  T312]
| [   44.475663][  T312] stack backtrace:
[   44.476133][  T312] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   44.476510][  T312] Call Trace:
[   44.476657][  T312]  <TASK>
[ 44.476749][ T312] dump_stack_lvl (lib/dump_stack.c:123) 
[ 44.476930][ T312] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 44.477099][ T312] nft_flowtable_lookup (net/netfilter/nf_tables_api.c:8380 (discriminator 7)) nf_tables
[ 44.477337][ T312] nf_tables_newflowtable (net/netfilter/nf_tables_api.c:8736) nf_tables
[ 44.477567][ T312] ? __pfx_nf_tables_newflowtable (net/netfilter/nf_tables_api.c:8711) nf_tables
[ 44.477802][ T312] ? net_generic (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48) 
[ 44.477977][ T312] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 44.478138][ T312] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 44.478308][ T312] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 44.478476][ T312] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 44.478644][ T312] nfnetlink_rcv_batch (net/netfilter/nfnetlink.c:524) 
[ 44.478825][ T312] ? __pfx_nfnetlink_rcv_batch (net/netfilter/nfnetlink.c:373) 
[ 44.478996][ T312] ? rcu_read_lock_any_held (kernel/rcu/update.c:387 kernel/rcu/update.c:380) 
[ 44.479162][ T312] ? find_stack (lib/stackdepot.c:552 (discriminator 1)) 
[ 44.479329][ T312] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 44.479507][ T312] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 44.479721][ T312] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 44.479907][ T312] ? __lock_acquire (kernel/locking/lockdep.c:5202) 
[ 44.480078][ T312] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 44.480249][ T312] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 44.480414][ T312] ? __nla_validate_parse (./include/net/netlink.h:1267 (discriminator 1) lib/nlattr.c:622 (discriminator 1)) 
[ 44.480592][ T312] nfnetlink_rcv (net/netfilter/nfnetlink.c:647 net/netfilter/nfnetlink.c:665) 
[ 44.480755][ T312] ? __pfx_nfnetlink_rcv (net/netfilter/nfnetlink.c:651) 
[ 44.480921][ T312] ? 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) 
[ 44.481097][ T312] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 44.481262][ T312] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 44.481430][ T312] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 44.481593][ T312] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 44.481757][ T312] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) 
[ 44.481926][ T312] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) 
[ 44.482221][ T312] ? __pfx_____sys_sendmsg (net/socket.c:2553) 
[ 44.482381][ T312] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) 
[ 44.482596][ T312] ___sys_sendmsg (net/socket.c:2663) 
[ 44.482755][ T312] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 44.482916][ T312] ? __pfx____sys_sendmsg (net/socket.c:2650) 
[ 44.483078][ T312] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 44.483245][ T312] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[ 44.483407][ T312] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 44.483586][ T312] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 44.483769][ T312] ? do_sock_getsockopt (net/socket.c:2388) 
[ 44.483931][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) 
[ 44.484091][ T312] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 44.484256][ T312] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) 
[ 44.484389][ T312] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) 
[ 44.484549][ T312] ? __pfx___sys_sendmsg (net/socket.c:2678) 
[ 44.484744][ T312] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 44.484924][ T312] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.485096][ T312] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   44.485296][  T312] RIP: 0033:0x7ff8f2ebb7b7
[ 44.485473][ T312] 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)
[   44.486066][  T312] RSP: 002b:00007ffc0cf29ff8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   44.486319][  T312] RAX: ffffffffffffffda RBX: 00007ffc0cf3b1f0 RCX: 00007ff8f2ebb7b7
[   44.486561][  T312] RDX: 0000000000000000 RSI: 00007ffc0cf3b0b0 RDI: 0000000000000005
[   44.486807][  T312] RBP: 00007ffc0cf3b1a0 R08: 00007ffc0cf29fdc R09: 00007ffc0cf2a000
[   44.487060][  T312] R10: 00007ff8f2d74708 R11: 0000000000000246 R12: 00007ffc0cf3b0f0
[   44.487302][  T312] R13: 0000000000002c00 R14: 0000000000000005 R15: 00007ffc0cf2a010
| [   46.920631][  T312] 1 lock held by nft/312:
| [ 46.920837][ T312] #0: ffff888005bf14c8 (&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
| [   46.921533][  T312]
| [   46.921533][  T312] stack backtrace:
[   46.922236][  T312] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   46.922799][  T312] Call Trace:
[   46.923000][  T312]  <TASK>
[ 46.923147][ T312] dump_stack_lvl (lib/dump_stack.c:123) 
[ 46.923422][ T312] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 46.923701][ T312] nft_set_lookup.part.0 (net/netfilter/nf_tables_api.c:4467) nf_tables
[ 46.924082][ T312] nf_tables_newset (net/netfilter/nf_tables_api.c:5230) nf_tables
[ 46.924468][ T312] ? __pfx_nf_tables_newset (net/netfilter/nf_tables_api.c:5072) nf_tables
[ 46.924832][ T312] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 46.925136][ T312] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 46.925406][ T312] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 46.925675][ T312] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 46.925962][ T312] nfnetlink_rcv_batch (net/netfilter/nfnetlink.c:524) 
[ 46.926255][ T312] ? __pfx_nfnetlink_rcv_batch (net/netfilter/nfnetlink.c:373) 
[ 46.926521][ T312] ? rcu_read_lock_any_held (kernel/rcu/update.c:387 kernel/rcu/update.c:380) 
[ 46.926783][ T312] ? find_stack (lib/stackdepot.c:552 (discriminator 1)) 
[ 46.927057][ T312] ? rcu_read_lock_any_held (kernel/rcu/update.c:386 kernel/rcu/update.c:380) 
[ 46.927318][ T312] ? validate_chain (kernel/locking/lockdep.c:3797 kernel/locking/lockdep.c:3817 kernel/locking/lockdep.c:3872) 
[ 46.927606][ T312] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) 
[ 46.927915][ T312] ? find_held_lock (kernel/locking/lockdep.c:5315) 
[ 46.928187][ T312] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 46.928451][ T312] ? __nla_validate_parse (./include/net/netlink.h:1267 (discriminator 1) lib/nlattr.c:622 (discriminator 1)) 
[ 46.928725][ T312] nfnetlink_rcv (net/netfilter/nfnetlink.c:647 net/netfilter/nfnetlink.c:665) 
[ 46.929001][ T312] ? __pfx_nfnetlink_rcv (net/netfilter/nfnetlink.c:651) 
[ 46.929267][ T312] ? 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) 
[ 46.929536][ T312] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 46.929814][ T312] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 46.930099][ T312] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 46.930367][ T312] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 46.930635][ T312] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) 
[ 46.930878][ T312] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) 
[ 46.931105][ T312] ? __pfx_____sys_sendmsg (net/socket.c:2553) 
[ 46.931351][ T312] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) 
[ 46.931641][ T312] ___sys_sendmsg (net/socket.c:2663) 
[ 46.931870][ T312] ? __lock_release (kernel/locking/lockdep.c:5501) 
[ 46.932097][ T312] ? __pfx____sys_sendmsg (net/socket.c:2650) 
[ 46.932265][ T312] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 46.932464][ T312] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[ 46.932685][ T312] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 46.932930][ T312] ? __might_fault (mm/memory.c:6705 mm/memory.c:6698) 
[ 46.933146][ T312] ? do_sock_getsockopt (net/socket.c:2388) 
[ 46.933356][ T312] ? reacquire_held_locks (kernel/locking/lockdep.c:5350) 
[ 46.933591][ T312] ? __pfx_do_sock_getsockopt (net/socket.c:2374) 
[ 46.933792][ T312] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) 
[ 46.933924][ T312] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) 
[ 46.934168][ T312] ? __pfx___sys_sendmsg (net/socket.c:2678) 
[ 46.934404][ T312] ? __pfx___sys_getsockopt (net/socket.c:2415) 
[ 46.934632][ T312] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 46.934829][ T312] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   46.935095][  T312] RIP: 0033:0x7ff8f2ebb7b7
[ 46.935314][ T312] 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)
[   46.936084][  T312] RSP: 002b:00007ffc0cf29ff8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   46.936462][  T312] RAX: ffffffffffffffda RBX: 00007ffc0cf3b1f0 RCX: 00007ff8f2ebb7b7
[   46.936853][  T312] RDX: 0000000000000000 RSI: 00007ffc0cf3b0b0 RDI: 0000000000000005
[   46.937238][  T312] RBP: 00007ffc0cf3b1a0 R08: 00007ffc0cf29fdc R09: 00007ffc0cf2a000
[   46.937643][  T312] R10: 00007ff8f2d74708 R11: 0000000000000246 R12: 00007ffc0cf3b0f0
[   46.937994][  T312] R13: 0000000000002c00 R14: 0000000000000005 R15: 00007ffc0cf2a010
| [ 210.096444][ T11] #2: ffffffffb29cf8d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net (net/core/net_namespace.c:590) 
| [ 210.096760][ T11] #3: ffff888008bde8c8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nf_tables_exit_net (net/netfilter/nf_tables_api.c:10288 net/netfilter/nf_tables_api.c:11635) nf_tables
| [  210.097185][   T11]
| [  210.097185][   T11] stack backtrace:
[  210.097725][   T11] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  210.098107][   T11] Workqueue: netns cleanup_net
[  210.098286][   T11] Call Trace:
[  210.098424][   T11]  <TASK>
[ 210.098522][ T11] dump_stack_lvl (lib/dump_stack.c:123) 
[ 210.098707][ T11] lockdep_rcu_suspicious (kernel/locking/lockdep.c:6822) 
[ 210.098882][ T11] nft_hash_walk (net/netfilter/nft_set_hash.c:650 (discriminator 7)) nf_tables
[ 210.099088][ T11] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4347 kernel/locking/lockdep.c:4406) 
[ 210.099313][ T11] nft_map_deactivate (net/netfilter/nf_tables_api.c:694) nf_tables
[ 210.099547][ T11] ? __pfx_nft_map_deactivate (net/netfilter/nf_tables_api.c:687) nf_tables
[ 210.099781][ T11] ? __pfx_nft_mapelem_deactivate (net/netfilter/nf_tables_api.c:650) nf_tables
[ 210.100052][ T11] ? mark_held_locks (kernel/locking/lockdep.c:4321) 
[ 210.100234][ T11] nf_tables_deactivate_set (net/netfilter/nf_tables_api.c:5660) nf_tables
[ 210.100475][ T11] nft_rule_expr_deactivate (net/netfilter/nf_tables_api.c:524) nf_tables
[ 210.100720][ T11] __nft_release_table (./include/net/netfilter/nf_tables.h:1014 ./include/net/netfilter/nf_tables.h:1020 net/netfilter/nf_tables_api.c:3863 net/netfilter/nf_tables_api.c:3874 net/netfilter/nf_tables_api.c:11501) nf_tables
[ 210.100966][ T11] ? __pfx___nft_release_table (net/netfilter/nf_tables_api.c:11480) nf_tables
[ 210.101196][ T11] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 210.101385][ T11] ? net_generic (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48) nf_tables
[ 210.101585][ T11] nf_tables_exit_net (net/netfilter/nf_tables_api.c:11535 net/netfilter/nf_tables_api.c:11643) nf_tables
[ 210.101833][ T11] ops_exit_list (net/core/net_namespace.c:173 (discriminator 3)) 
[ 210.102007][ T11] cleanup_net (net/core/net_namespace.c:632 (discriminator 3)) 
[ 210.102182][ T11] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) 
[ 210.102355][ T11] ? __pfx_cleanup_net (net/core/net_namespace.c:577) 
[ 210.102522][ T11] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 210.102695][ T11] ? process_one_work (kernel/workqueue.c:3205) 
[ 210.102870][ T11] ? lock_acquire (kernel/locking/lockdep.c:5798) 
[ 210.103045][ T11] ? process_one_work (kernel/workqueue.c:3205) 
[ 210.103222][ T11] process_one_work (kernel/workqueue.c:3229) 
[ 210.103409][ T11] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) 
[ 210.103585][ T11] ? __pfx_process_one_work (kernel/workqueue.c:3131) 
[ 210.103764][ T11] ? assign_work (kernel/workqueue.c:1200) 
[ 210.103938][ T11] worker_thread (kernel/workqueue.c:3304 kernel/workqueue.c:3391) 
[ 210.104139][ T11] ? __pfx_worker_thread (kernel/workqueue.c:3337) 
[ 210.104312][ T11] kthread (kernel/kthread.c:389) 
[ 210.104443][ T11] ? __pfx_kthread (kernel/kthread.c:342) 
[ 210.104615][ T11] ret_from_fork (arch/x86/kernel/process.c:147) 
[ 210.104790][ T11] ? __pfx_kthread (kernel/kthread.c:342) 


Finger prints:
lockdep_rcu_suspicious:nft_hash_walk:nft_map_deactivate:nf_tables_deactivate_set:nft_rule_expr_deactivate
lockdep_rcu_suspicious:nft_flowtable_lookup:nf_tables_newflowtable:nfnetlink_rcv_batch:nfnetlink_rcv
lockdep_rcu_suspicious:nf_tables_newset:nfnetlink_rcv_batch:nfnetlink_rcv:netlink_unicast