======================================
| [  203.915711][ T1402] 1 lock held by ip/1402:
| [ 203.915926][ T1402] #0: ffffffffa97bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  203.916240][ T1402]
| [  203.916240][ T1402] stack backtrace:
[  203.916701][ T1402] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  203.917076][ T1402] Call Trace:
[  203.917214][ T1402]  <TASK>
[ 203.917305][ T1402] dump_stack_lvl (lib/dump_stack.c:122) 
[ 203.917485][ T1402] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 203.917654][ T1402] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 203.918293][ T1402] br_get_link_af_size_filtered (net/bridge/br_private.h:930 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) bridge
[ 203.918538][ T1402] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 203.918734][ T1402] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 203.918952][ T1402] br_add_if (net/bridge/br_if.c:692) bridge
[ 203.919156][ T1402] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 203.919323][ T1402] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 203.919644][ T1402] do_setlink (net/core/rtnetlink.c:2907) 
[ 203.919813][ T1402] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 203.919985][ T1402] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 203.920157][ T1402] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 203.920323][ T1402] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 203.920500][ T1402] ? __kernel_text_address (kernel/extable.c:79) 
[ 203.920678][ T1402] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 203.920846][ T1402] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 203.921057][ T1402] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 203.921244][ T1402] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 203.921412][ T1402] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 203.921578][ T1402] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 203.921746][ T1402] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 203.921882][ T1402] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 203.922054][ T1402] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 203.922231][ T1402] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 203.922419][ T1402] ? 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:227) 
[ 203.922589][ T1402] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 203.922776][ T1402] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 203.922989][ T1402] ? __create_object (mm/kmemleak.c:751) 
[ 203.923159][ T1402] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 203.923331][ T1402] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 203.923465][ T1402] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 203.923637][ T1402] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 203.923805][ T1402] ? 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:227) 
[ 203.923974][ T1402] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 203.924107][ T1402] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 203.924276][ T1402] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 203.924446][ T1402] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 203.924614][ T1402] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 203.924805][ T1402] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 203.924976][ T1402] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 203.925147][ T1402] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 203.925319][ T1402] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 203.925487][ T1402] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 203.925660][ T1402] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 203.925832][ T1402] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 203.925998][ T1402] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 203.926174][ T1402] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 203.926349][ T1402] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 203.926522][ T1402] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 203.926688][ T1402] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 203.926896][ T1402] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 203.927075][ T1402] ___sys_sendmsg (net/socket.c:2653) 
[ 203.927248][ T1402] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 203.927436][ T1402] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 203.927609][ T1402] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 203.927782][ T1402] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 203.927992][ T1402] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 203.928160][ T1402] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 203.928330][ T1402] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 203.928550][ T1402] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 203.928728][ T1402] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 203.928905][ T1402] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 203.929076][ T1402] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2034 arch/x86/mm/physaddr.c:65) 
[ 203.929274][ T1402] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 203.929446][ T1402] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  203.929665][ T1402] RIP: 0033:0x7fdd100317b7
[ 203.929856][ T1402] 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)
[  203.930434][ T1402] RSP: 002b:00007ffcee40eec8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  203.930696][ T1402] RAX: ffffffffffffffda RBX: 00007ffcee40f5f0 RCX: 00007fdd100317b7
[  203.930973][ T1402] RDX: 0000000000000000 RSI: 00007ffcee40ef30 RDI: 0000000000000005
[  203.931224][ T1402] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  203.931476][ T1402] R10: 00000000257bf910 R11: 0000000000000246 R12: 0000000000000004
[  203.931739][ T1402] R13: 0000000066bea1fd R14: 0000000000496600 R15: 0000000000000000
| [  203.933876][ T1402] 1 lock held by ip/1402:
| [ 203.934010][ T1402] #0: ffffffffa97bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  203.934328][ T1402]
| [  203.934328][ T1402] stack backtrace:
[  203.934796][ T1402] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  203.935171][ T1402] Call Trace:
[  203.935314][ T1402]  <TASK>
[ 203.935413][ T1402] dump_stack_lvl (lib/dump_stack.c:122) 
[ 203.935587][ T1402] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 203.935782][ T1402] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 203.936030][ T1402] br_get_link_af_size_filtered (net/bridge/br_private.h:453 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) bridge
[ 203.936283][ T1402] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 203.936498][ T1402] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 203.936709][ T1402] br_add_if (net/bridge/br_if.c:692) bridge
[ 203.936913][ T1402] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 203.937081][ T1402] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 203.937311][ T1402] do_setlink (net/core/rtnetlink.c:2907) 
[ 203.937486][ T1402] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 203.937661][ T1402] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 203.937841][ T1402] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 203.938012][ T1402] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 203.938183][ T1402] ? __kernel_text_address (kernel/extable.c:79) 
[ 203.938362][ T1402] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 203.938536][ T1402] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 203.938755][ T1402] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 203.938938][ T1402] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 203.939115][ T1402] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 203.939282][ T1402] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 203.939463][ T1402] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 203.939594][ T1402] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 203.939778][ T1402] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 203.939952][ T1402] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 203.940134][ T1402] ? 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:227) 
[ 203.940305][ T1402] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 203.940482][ T1402] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 203.940700][ T1402] ? __create_object (mm/kmemleak.c:751) 
[ 203.940879][ T1402] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 203.941054][ T1402] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 203.941195][ T1402] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 203.941380][ T1402] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 203.941564][ T1402] ? 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:227) 
[ 203.941749][ T1402] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 203.941889][ T1402] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 203.942082][ T1402] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 203.942265][ T1402] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 203.942451][ T1402] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 203.942645][ T1402] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 203.942826][ T1402] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 203.943016][ T1402] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 203.943202][ T1402] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 203.943386][ T1402] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 203.943574][ T1402] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 203.943761][ T1402] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 203.943938][ T1402] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 203.944127][ T1402] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 203.944314][ T1402] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 203.944499][ T1402] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 203.944683][ T1402] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 203.944912][ T1402] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 203.945103][ T1402] ___sys_sendmsg (net/socket.c:2653) 
[ 203.945287][ T1402] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 203.945464][ T1402] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 203.945647][ T1402] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 203.945824][ T1402] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 203.946051][ T1402] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 203.946231][ T1402] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 203.946420][ T1402] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 203.946646][ T1402] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 203.946838][ T1402] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 203.947019][ T1402] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 203.947201][ T1402] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2034 arch/x86/mm/physaddr.c:65) 
[ 203.947405][ T1402] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 203.947591][ T1402] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  203.947815][ T1402] RIP: 0033:0x7fdd100317b7
[ 203.948006][ T1402] 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)
[  203.948621][ T1402] RSP: 002b:00007ffcee40eec8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  203.949111][ T1402] RAX: ffffffffffffffda RBX: 00007ffcee40f5f0 RCX: 00007fdd100317b7
[  203.949379][ T1402] RDX: 0000000000000000 RSI: 00007ffcee40ef30 RDI: 0000000000000005
[  203.949649][ T1402] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  203.949921][ T1402] R10: 00000000257bf910 R11: 0000000000000246 R12: 0000000000000004
[  203.950187][ T1402] R13: 0000000066bea1fd R14: 0000000000496600 R15: 0000000000000000
| [  203.952542][ T1402] 1 lock held by ip/1402:
| [ 203.952680][ T1402] #0: ffffffffa97bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  203.953110][ T1402]
| [  203.953110][ T1402] stack backtrace:
[  203.953604][ T1402] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  203.954096][ T1402] Call Trace:
[  203.954233][ T1402]  <TASK>
[ 203.954329][ T1402] dump_stack_lvl (lib/dump_stack.c:122) 
[ 203.954516][ T1402] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 203.954698][ T1402] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 203.955074][ T1402] br_get_link_af_size_filtered (net/bridge/br_private.h:1611 net/bridge/br_private.h:1608 net/bridge/br_netlink.c:107) bridge
[ 203.955338][ T1402] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 203.955550][ T1402] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 203.955785][ T1402] br_add_if (net/bridge/br_if.c:692) bridge
[ 203.955996][ T1402] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 203.956173][ T1402] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 203.956403][ T1402] do_setlink (net/core/rtnetlink.c:2907) 
[ 203.956585][ T1402] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 203.956777][ T1402] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 203.956958][ T1402] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 203.957142][ T1402] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 203.957322][ T1402] ? __kernel_text_address (kernel/extable.c:79) 
[ 203.957596][ T1402] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 203.957773][ T1402] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 203.957994][ T1402] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 203.958186][ T1402] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 203.958468][ T1402] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 203.958646][ T1402] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 203.958825][ T1402] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 203.958963][ T1402] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 203.959243][ T1402] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 203.959427][ T1402] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 203.959611][ T1402] ? 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:227) 
[ 203.959788][ T1402] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 203.960076][ T1402] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 203.960299][ T1402] ? __create_object (mm/kmemleak.c:751) 
[ 203.960482][ T1402] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 203.960674][ T1402] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 203.960821][ T1402] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 203.961113][ T1402] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 203.961293][ T1402] ? 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:227) 
[ 203.961471][ T1402] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 203.961612][ T1402] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 203.961801][ T1402] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 203.961982][ T1402] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 203.962162][ T1402] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 203.962356][ T1402] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 203.962536][ T1402] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 203.962718][ T1402] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 203.962901][ T1402] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 203.963088][ T1402] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 203.963272][ T1402] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 203.963456][ T1402] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 203.963630][ T1402] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 203.963813][ T1402] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 203.963998][ T1402] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 203.964273][ T1402] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 203.964449][ T1402] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 203.964667][ T1402] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 203.964858][ T1402] ___sys_sendmsg (net/socket.c:2653) 
[ 203.965229][ T1402] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 203.965409][ T1402] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 203.965587][ T1402] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 203.965768][ T1402] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 203.966084][ T1402] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 203.966263][ T1402] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 203.966451][ T1402] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 203.966674][ T1402] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 203.966956][ T1402] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 203.967132][ T1402] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 203.967306][ T1402] ? __virt_addr_valid (./arch/x86/include/asm/preempt.h:94 ./include/linux/rcupdate.h:953 ./include/linux/mmzone.h:2034 arch/x86/mm/physaddr.c:65) 
[ 203.967503][ T1402] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 203.967684][ T1402] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  203.967901][ T1402] RIP: 0033:0x7fdd100317b7
[ 203.968088][ T1402] 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)
[  203.968693][ T1402] RSP: 002b:00007ffcee40eec8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  203.968959][ T1402] RAX: ffffffffffffffda RBX: 00007ffcee40f5f0 RCX: 00007fdd100317b7
[  203.969320][ T1402] RDX: 0000000000000000 RSI: 00007ffcee40ef30 RDI: 0000000000000005
[  203.969588][ T1402] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[  203.969855][ T1402] R10: 00000000257bf910 R11: 0000000000000246 R12: 0000000000000004
[  203.970211][ T1402] R13: 0000000066bea1fd R14: 0000000000496600 R15: 0000000000000000
| [  204.617233][ T1406] 1 lock held by bridge/1406:
| [ 204.617497][ T1406] #0: ffffffffa97bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [  204.617913][ T1406]
| [  204.617913][ T1406] stack backtrace:
[  204.618470][ T1406] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[  204.618870][ T1406] Call Trace:
[  204.619008][ T1406]  <TASK>
[ 204.619102][ T1406] dump_stack_lvl (lib/dump_stack.c:122) 
[ 204.619288][ T1406] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 204.619477][ T1406] br_get_link_af_size_filtered (net/bridge/br_private.h:1605 net/bridge/br_private.h:1602 net/bridge/br_netlink.c:110) bridge
[ 204.619751][ T1406] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 204.619962][ T1406] br_setlink (net/bridge/br_netlink.c:669 net/bridge/br_netlink.c:1136) bridge
[ 204.620171][ T1406] ? __pfx_br_setlink (net/bridge/br_netlink.c:1085) bridge
[ 204.620387][ T1406] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[ 204.620567][ T1406] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 204.620762][ T1406] ? 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:227) 
[ 204.620944][ T1406] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:129) 
[ 204.621129][ T1406] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:104) 
[ 204.621354][ T1406] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 204.621534][ T1406] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 204.621715][ T1406] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[ 204.621894][ T1406] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 204.622074][ T1406] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 204.622255][ T1406] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 204.622436][ T1406] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 204.622620][ T1406] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 204.622801][ T1406] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[ 204.622982][ T1406] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 204.623166][ T1406] rtnl_bridge_setlink (net/core/rtnetlink.c:5225) 
[ 204.623347][ T1406] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 204.623528][ T1406] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 204.623709][ T1406] ? 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:227) 
[ 204.623887][ T1406] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 204.624032][ T1406] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 204.624215][ T1406] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 204.624397][ T1406] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 204.624582][ T1406] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 204.624778][ T1406] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 204.624958][ T1406] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) 
[ 204.625140][ T1406] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 204.625328][ T1406] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 204.625515][ T1406] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 204.625701][ T1406] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 204.625884][ T1406] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 204.626066][ T1406] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 204.626254][ T1406] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 204.626446][ T1406] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 204.626634][ T1406] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 204.626813][ T1406] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 204.627046][ T1406] ? 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:227) 
[ 204.627235][ T1406] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3758 kernel/locking/lockdep.c:3781 kernel/locking/lockdep.c:3836) 
[ 204.627422][ T1406] ___sys_sendmsg (net/socket.c:2653) 
[ 204.627604][ T1406] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 204.627788][ T1406] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 204.627981][ T1406] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 204.628168][ T1406] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 204.628348][ T1406] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 204.628529][ T1406] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 204.628712][ T1406] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 204.628896][ T1406] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 204.629074][ T1406] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 204.629273][ T1406] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 204.629453][ T1406] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[  204.629680][ T1406] RIP: 0033:0x7fd587a4f7b7
[ 204.629866][ T1406] 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)
[  204.630481][ T1406] RSP: 002b:00007ffe741e9f28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[  204.630775][ T1406] RAX: ffffffffffffffda RBX: 000000000000ffff RCX: 00007fd587a4f7b7
[  204.631038][ T1406] RDX: 0000000000000000 RSI: 00007ffe741e9f90 RDI: 0000000000000005
[  204.631300][ T1406] RBP: 00007ffe741ea080 R08: 0000000000000034 R09: 0000000000000000
[  204.631570][ T1406] R10: 00007fd587908708 R11: 0000000000000246 R12: 000000000000022b


Finger prints:
lockdep_rcu_suspicious:br_get_link_af_size_filtered:br_info_notify:br_setlink:rtnl_bridge_setlink
lockdep_rcu_suspicious:br_get_link_af_size_filtered:br_info_notify:br_add_if:do_setlink