======================================
| [   35.746285][  T337] 1 lock held by ip/337:
| [ 35.746418][ T337] #0: ffffffffac3bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   35.746741][  T337]
| [   35.746741][  T337] stack backtrace:
[   35.747236][  T337] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.747611][  T337] Call Trace:
[   35.747745][  T337]  <TASK>
[ 35.747835][ T337] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.748013][ T337] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.748181][ T337] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 35.748465][ T337] 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
[ 35.748721][ T337] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 35.748919][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.749131][ T337] br_add_if (net/bridge/br_if.c:692) bridge
[ 35.749333][ T337] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 35.749500][ T337] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 35.749710][ T337] do_setlink (net/core/rtnetlink.c:2907) 
[ 35.749879][ T337] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 35.750056][ T337] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 35.750224][ T337] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 35.750390][ T337] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.750559][ T337] ? __kernel_text_address (kernel/extable.c:79) 
[ 35.750729][ T337] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 35.750895][ T337] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 35.751104][ T337] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.751297][ T337] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.751468][ T337] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.751642][ T337] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 35.751812][ T337] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.751945][ T337] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 35.752120][ T337] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 35.752294][ T337] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 35.752475][ T337] ? 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) 
[ 35.752643][ T337] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 35.752825][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.753038][ T337] ? __create_object (mm/kmemleak.c:751) 
[ 35.753209][ T337] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.753381][ T337] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 35.753510][ T337] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.753682][ T337] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.753849][ T337] ? 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) 
[ 35.754015][ T337] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.754151][ T337] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.754322][ T337] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.754491][ T337] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.754661][ T337] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.754852][ T337] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.755019][ T337] ? 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) 
[ 35.755190][ T337] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.755362][ T337] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.755535][ T337] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.755708][ T337] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.755885][ T337] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.756060][ T337] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.756240][ T337] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.756426][ T337] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.756597][ T337] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.756767][ T337] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.756980][ T337] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.757160][ T337] ___sys_sendmsg (net/socket.c:2653) 
[ 35.757336][ T337] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.757505][ T337] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.757675][ T337] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.757840][ T337] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 35.758047][ T337] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.758217][ T337] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.758400][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.758634][ T337] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.758812][ T337] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.758980][ T337] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.759148][ T337] ? __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) 
[ 35.759335][ T337] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.759506][ T337] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.759715][  T337] RIP: 0033:0x7f400497d7b7
[ 35.759893][ T337] 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)
[   35.760470][  T337] RSP: 002b:00007fff519a1558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.760723][  T337] RAX: ffffffffffffffda RBX: 00007fff519a1c80 RCX: 00007f400497d7b7
[   35.760975][  T337] RDX: 0000000000000000 RSI: 00007fff519a15c0 RDI: 0000000000000005
[   35.761233][  T337] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   35.761483][  T337] R10: 0000000030897910 R11: 0000000000000246 R12: 0000000000000004
[   35.761733][  T337] R13: 0000000066bea284 R14: 0000000000496600 R15: 0000000000000000
| [   35.764297][  T337] 1 lock held by ip/337:
| [ 35.764439][ T337] #0: ffffffffac3bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   35.764745][  T337]
| [   35.764745][  T337] stack backtrace:
[   35.765213][  T337] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.765588][  T337] Call Trace:
[   35.765716][  T337]  <TASK>
[ 35.765808][ T337] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.765983][ T337] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.766152][ T337] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 35.766398][ T337] 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
[ 35.766661][ T337] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 35.766878][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.767094][ T337] br_add_if (net/bridge/br_if.c:692) bridge
[ 35.767297][ T337] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 35.767465][ T337] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 35.767677][ T337] do_setlink (net/core/rtnetlink.c:2907) 
[ 35.767846][ T337] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 35.768014][ T337] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 35.768184][ T337] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 35.768372][ T337] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.768544][ T337] ? __kernel_text_address (kernel/extable.c:79) 
[ 35.768721][ T337] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 35.768889][ T337] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 35.769100][ T337] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.769294][ T337] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.769463][ T337] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.769653][ T337] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 35.769827][ T337] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.769976][ T337] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 35.770153][ T337] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 35.770326][ T337] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 35.770504][ T337] ? 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) 
[ 35.770675][ T337] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 35.770848][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.771077][ T337] ? __create_object (mm/kmemleak.c:751) 
[ 35.771253][ T337] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.771437][ T337] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 35.771571][ T337] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.771742][ T337] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.771910][ T337] ? 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) 
[ 35.772078][ T337] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.772223][ T337] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.772395][ T337] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.772571][ T337] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.772748][ T337] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.772932][ T337] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.773100][ T337] ? 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) 
[ 35.773273][ T337] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.773446][ T337] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.773617][ T337] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.773800][ T337] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.773975][ T337] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.774148][ T337] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.774320][ T337] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.774496][ T337] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.774667][ T337] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.774836][ T337] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.775052][ T337] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.775231][ T337] ___sys_sendmsg (net/socket.c:2653) 
[ 35.775408][ T337] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.775584][ T337] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.775756][ T337] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.775924][ T337] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 35.776131][ T337] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.776304][ T337] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.776477][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.776688][ T337] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.776867][ T337] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.777036][ T337] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.777202][ T337] ? __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) 
[ 35.777391][ T337] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.777561][ T337] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.777771][  T337] RIP: 0033:0x7f400497d7b7
[ 35.778092][ T337] 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)
[   35.778788][  T337] RSP: 002b:00007fff519a1558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.779050][  T337] RAX: ffffffffffffffda RBX: 00007fff519a1c80 RCX: 00007f400497d7b7
[   35.779300][  T337] RDX: 0000000000000000 RSI: 00007fff519a15c0 RDI: 0000000000000005
[   35.779644][  T337] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   35.779906][  T337] R10: 0000000030897910 R11: 0000000000000246 R12: 0000000000000004
[   35.780162][  T337] R13: 0000000066bea284 R14: 0000000000496600 R15: 0000000000000000
| [   35.782493][  T337] 1 lock held by ip/337:
| [ 35.782624][ T337] #0: ffffffffac3bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   35.783043][  T337]
| [   35.783043][  T337] stack backtrace:
[   35.783510][  T337] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.783972][  T337] Call Trace:
[   35.784107][  T337]  <TASK>
[ 35.784201][ T337] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.784375][ T337] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.784641][ T337] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 35.784888][ T337] 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
[ 35.785132][ T337] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 35.785332][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.785646][ T337] br_add_if (net/bridge/br_if.c:692) bridge
[ 35.785853][ T337] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 35.786021][ T337] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 35.786232][ T337] do_setlink (net/core/rtnetlink.c:2907) 
[ 35.786401][ T337] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 35.786570][ T337] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 35.786737][ T337] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 35.786904][ T337] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.787169][ T337] ? __kernel_text_address (kernel/extable.c:79) 
[ 35.787339][ T337] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 35.787507][ T337] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 35.787716][ T337] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.787993][ T337] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.788161][ T337] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.788330][ T337] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 35.788498][ T337] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.788728][ T337] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 35.788904][ T337] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 35.789081][ T337] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 35.789256][ T337] ? 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) 
[ 35.789428][ T337] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 35.789707][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.789916][ T337] ? __create_object (mm/kmemleak.c:751) 
[ 35.790087][ T337] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.790266][ T337] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 35.790410][ T337] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.790586][ T337] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.790755][ T337] ? 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) 
[ 35.790922][ T337] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.791150][ T337] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.791322][ T337] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.791489][ T337] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.791659][ T337] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.791844][ T337] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.792112][ T337] ? 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) 
[ 35.792285][ T337] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.792458][ T337] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.792627][ T337] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.792900][ T337] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.793071][ T337] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.793237][ T337] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.793406][ T337] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.793680][ T337] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.793851][ T337] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.794017][ T337] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.794229][ T337] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.794505][ T337] ___sys_sendmsg (net/socket.c:2653) 
[ 35.794676][ T337] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.794848][ T337] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.795019][ T337] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.795194][ T337] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 35.795408][ T337] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.795579][ T337] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.795753][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.796058][ T337] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.796234][ T337] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.796404][ T337] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.796590][ T337] ? __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) 
[ 35.796883][ T337] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.797054][ T337] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.797263][  T337] RIP: 0033:0x7f400497d7b7
[ 35.797437][ T337] 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)
[   35.798122][  T337] RSP: 002b:00007fff519a1558 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.798381][  T337] RAX: ffffffffffffffda RBX: 00007fff519a1c80 RCX: 00007f400497d7b7
[   35.798758][  T337] RDX: 0000000000000000 RSI: 00007fff519a15c0 RDI: 0000000000000005
[   35.799007][  T337] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   35.799253][  T337] R10: 0000000030897910 R11: 0000000000000246 R12: 0000000000000004
[   35.799506][  T337] R13: 0000000066bea284 R14: 0000000000496600 R15: 0000000000000000
| [   37.995682][  T354] 1 lock held by bridge/354:
| [ 37.995869][ T354] #0: ffffffffac3bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   37.996196][  T354]
| [   37.996196][  T354] stack backtrace:
[   37.996677][  T354] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   37.997063][  T354] Call Trace:
[   37.997202][  T354]  <TASK>
[ 37.997294][ T354] dump_stack_lvl (lib/dump_stack.c:122) 
[ 37.997477][ T354] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 37.997658][ T354] 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
[ 37.997921][ T354] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 37.998131][ T354] br_setlink (net/bridge/br_netlink.c:669 net/bridge/br_netlink.c:1136) bridge
[ 37.998339][ T354] ? __pfx_br_setlink (net/bridge/br_netlink.c:1085) bridge
[ 37.998566][ T354] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[ 37.998753][ T354] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 37.998932][ T354] ? 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) 
[ 37.999114][ T354] ? __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) 
[ 37.999294][ T354] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:104) 
[ 37.999516][ T354] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 37.999690][ T354] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 37.999867][ T354] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[ 38.000050][ T354] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 38.000229][ T354] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 38.000403][ T354] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 38.000581][ T354] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 38.000755][ T354] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 38.000931][ T354] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[ 38.001107][ T354] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 38.001286][ T354] rtnl_bridge_setlink (net/core/rtnetlink.c:5225) 
[ 38.001466][ T354] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 38.001645][ T354] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 38.001824][ T354] ? 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) 
[ 38.002000][ T354] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 38.002137][ T354] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 38.002314][ T354] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 38.002491][ T354] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 38.002669][ T354] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 38.002866][ T354] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 38.003042][ T354] ? 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) 
[ 38.003221][ T354] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 38.003390][ T354] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 38.003555][ T354] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 38.003724][ T354] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 38.003897][ T354] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 38.004062][ T354] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 38.004238][ T354] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 38.004409][ T354] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 38.004576][ T354] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 38.004740][ T354] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 38.004943][ T354] ? 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) 
[ 38.005109][ T354] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3758 kernel/locking/lockdep.c:3781 kernel/locking/lockdep.c:3836) 
[ 38.005279][ T354] ___sys_sendmsg (net/socket.c:2653) 
[ 38.005443][ T354] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 38.005612][ T354] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 38.005788][ T354] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 38.005964][ T354] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 38.006131][ T354] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 38.006295][ T354] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 38.006457][ T354] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 38.006626][ T354] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 38.006794][ T354] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 38.006992][ T354] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 38.007172][ T354] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   38.007389][  T354] RIP: 0033:0x7fa1fef907b7
[ 38.007567][ T354] 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)
[   38.008171][  T354] RSP: 002b:00007fffc93d2c08 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   38.008426][  T354] RAX: ffffffffffffffda RBX: 000000000000ffff RCX: 00007fa1fef907b7
[   38.008678][  T354] RDX: 0000000000000000 RSI: 00007fffc93d2c70 RDI: 0000000000000005
[   38.008947][  T354] RBP: 00007fffc93d2d60 R08: 0000000000000034 R09: 0000000000000000
[   38.009194][  T354] R10: 00007fa1fee49708 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