======================================
| [ 33.439109][ T292] #0: ffffffff8c5dcac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 33.439429][ T292] #1: ffff888008f1ac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) 
| [   33.439720][  T292]
| [   33.439720][  T292] stack backtrace:
[   33.440160][  T292] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   33.440509][  T292] Call Trace:
[   33.440640][  T292]  <TASK>
[ 33.440727][ T292] dump_stack_lvl (lib/dump_stack.c:122) 
[ 33.440896][ T292] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 33.441058][ T292] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) 
[ 33.441223][ T292] br_get_link_af_size_filtered (net/bridge/br_private.h:930 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) 
[ 33.441425][ T292] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 33.441585][ T292] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 33.441750][ T292] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) 
[ 33.441915][ T292] br_make_forwarding (net/bridge/br_stp.c:465) 
[ 33.442090][ T292] br_port_state_selection (net/bridge/br_stp.c:495) 
[ 33.442259][ T292] br_stp_enable_port (net/bridge/br_stp_if.c:95) 
[ 33.442419][ T292] br_add_if (net/bridge/br_if.c:687) 
[ 33.442544][ T292] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 33.442705][ T292] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 33.442902][ T292] do_setlink (net/core/rtnetlink.c:2907) 
[ 33.443065][ T292] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 33.443224][ T292] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 33.443385][ T292] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 33.443541][ T292] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 33.443704][ T292] ? __kernel_text_address (kernel/extable.c:79) 
[ 33.443861][ T292] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 33.444021][ T292] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 33.444215][ T292] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 33.444384][ T292] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 33.444542][ T292] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 33.444701][ T292] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 33.444872][ T292] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 33.445029][ T292] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 33.445192][ T292] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 33.445359][ T292] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 33.445527][ T292] ? 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) 
[ 33.445687][ T292] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 33.445849][ T292] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 33.446046][ T292] ? __create_object (mm/kmemleak.c:751) 
[ 33.446221][ T292] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 33.446392][ T292] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 33.446514][ T292] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 33.446675][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 33.446834][ T292] ? 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) 
[ 33.447009][ T292] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 33.447134][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 33.447295][ T292] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 33.447453][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 33.447620][ T292] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 33.447795][ T292] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 33.447953][ T292] ? 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) 
[ 33.448114][ T292] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 33.448281][ T292] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 33.448440][ T292] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 33.448603][ T292] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 33.448764][ T292] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 33.448926][ T292] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 33.449089][ T292] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 33.449254][ T292] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 33.449415][ T292] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 33.449578][ T292] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 33.449776][ T292] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 33.449945][ T292] ___sys_sendmsg (net/socket.c:2653) 
[ 33.450104][ T292] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 33.450266][ T292] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 33.450427][ T292] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 33.450589][ T292] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 33.450785][ T292] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 33.450966][ T292] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 33.451137][ T292] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 33.451340][ T292] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 33.451512][ T292] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 33.451680][ T292] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 33.451839][ T292] ? __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) 
[ 33.452037][ T292] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 33.452197][ T292] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   33.452398][  T292] RIP: 0033:0x7f262087c7b7
[ 33.452570][ T292] 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)
[   33.453135][  T292] RSP: 002b:00007ffd0bbd85f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   33.453391][  T292] RAX: ffffffffffffffda RBX: 00007ffd0bbd8d20 RCX: 00007f262087c7b7
[   33.453629][  T292] RDX: 0000000000000000 RSI: 00007ffd0bbd8660 RDI: 0000000000000005
[   33.453865][  T292] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   33.454104][  T292] R10: 000000000241f910 R11: 0000000000000246 R12: 0000000000000003
[   33.454356][  T292] R13: 0000000066be9f9e R14: 0000000000496600 R15: 0000000000000000
| [ 33.456441][ T292] #0: ffffffff8c5dcac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 33.456799][ T292] #1: ffff888008f1ac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) 
| [   33.457082][  T292]
| [   33.457082][  T292] stack backtrace:
[   33.457559][  T292] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   33.457931][  T292] Call Trace:
[   33.458057][  T292]  <TASK>
[ 33.458158][ T292] dump_stack_lvl (lib/dump_stack.c:122) 
[ 33.458323][ T292] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 33.458511][ T292] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) 
[ 33.458674][ T292] br_get_link_af_size_filtered (net/bridge/br_private.h:453 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) 
[ 33.458891][ T292] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 33.459048][ T292] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 33.459237][ T292] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) 
[ 33.459411][ T292] br_make_forwarding (net/bridge/br_stp.c:465) 
[ 33.459607][ T292] br_port_state_selection (net/bridge/br_stp.c:495) 
[ 33.459801][ T292] br_stp_enable_port (net/bridge/br_stp_if.c:95) 
[ 33.459963][ T292] br_add_if (net/bridge/br_if.c:687) 
[ 33.460121][ T292] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 33.460282][ T292] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 33.460509][ T292] do_setlink (net/core/rtnetlink.c:2907) 
[ 33.460668][ T292] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 33.460851][ T292] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 33.461017][ T292] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 33.461189][ T292] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 33.461352][ T292] ? __kernel_text_address (kernel/extable.c:79) 
[ 33.461540][ T292] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 33.461698][ T292] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 33.461918][ T292] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 33.462105][ T292] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 33.462269][ T292] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 33.462452][ T292] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 33.462627][ T292] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 33.462784][ T292] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 33.462950][ T292] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 33.463141][ T292] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 33.463306][ T292] ? 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) 
[ 33.463499][ T292] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 33.463687][ T292] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 33.463893][ T292] ? __create_object (mm/kmemleak.c:751) 
[ 33.464052][ T292] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 33.464218][ T292] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 33.464340][ T292] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 33.464530][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 33.464688][ T292] ? 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) 
[ 33.464859][ T292] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 33.464985][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 33.465150][ T292] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 33.465308][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 33.465476][ T292] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 33.465652][ T292] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 33.465811][ T292] ? 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) 
[ 33.465970][ T292] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 33.466142][ T292] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 33.466307][ T292] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 33.466484][ T292] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 33.466652][ T292] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 33.466808][ T292] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 33.466971][ T292] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 33.467136][ T292] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 33.467304][ T292] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 33.467474][ T292] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 33.467677][ T292] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 33.467851][ T292] ___sys_sendmsg (net/socket.c:2653) 
[ 33.468013][ T292] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 33.468171][ T292] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 33.468332][ T292] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 33.468527][ T292] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 33.468746][ T292] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 33.468907][ T292] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 33.469070][ T292] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 33.469306][ T292] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 33.469481][ T292] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 33.469644][ T292] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 33.469824][ T292] ? __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) 
[ 33.470005][ T292] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 33.470194][ T292] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   33.470391][  T292] RIP: 0033:0x7f262087c7b7
[ 33.470568][ T292] 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)
[   33.471161][  T292] RSP: 002b:00007ffd0bbd85f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   33.471404][  T292] RAX: ffffffffffffffda RBX: 00007ffd0bbd8d20 RCX: 00007f262087c7b7
[   33.471683][  T292] RDX: 0000000000000000 RSI: 00007ffd0bbd8660 RDI: 0000000000000005
[   33.471925][  T292] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   33.472179][  T292] R10: 000000000241f910 R11: 0000000000000246 R12: 0000000000000003
[   33.472432][  T292] R13: 0000000066be9f9e R14: 0000000000496600 R15: 0000000000000000
| [ 33.474649][ T292] #0: ffffffff8c5dcac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 33.474938][ T292] #1: ffff888008f1ac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) 
| [   33.475226][  T292]
| [   33.475226][  T292] stack backtrace:
[   33.475680][  T292] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   33.476054][  T292] Call Trace:
[   33.476187][  T292]  <TASK>
[ 33.476274][ T292] dump_stack_lvl (lib/dump_stack.c:122) 
[ 33.476467][ T292] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 33.476630][ T292] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) 
[ 33.476793][ T292] br_get_link_af_size_filtered (net/bridge/br_private.h:1611 net/bridge/br_private.h:1608 net/bridge/br_netlink.c:107) 
[ 33.477014][ T292] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 33.477179][ T292] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 33.477356][ T292] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) 
[ 33.477533][ T292] br_make_forwarding (net/bridge/br_stp.c:465) 
[ 33.477694][ T292] br_port_state_selection (net/bridge/br_stp.c:495) 
[ 33.477873][ T292] br_stp_enable_port (net/bridge/br_stp_if.c:95) 
[ 33.478033][ T292] br_add_if (net/bridge/br_if.c:687) 
[ 33.478178][ T292] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 33.478338][ T292] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 33.478553][ T292] do_setlink (net/core/rtnetlink.c:2907) 
[ 33.478718][ T292] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 33.478875][ T292] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 33.479031][ T292] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 33.479185][ T292] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 33.479361][ T292] ? __kernel_text_address (kernel/extable.c:79) 
[ 33.479562][ T292] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 33.479718][ T292] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 33.479938][ T292] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 33.480116][ T292] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 33.480274][ T292] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 33.480465][ T292] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 33.480629][ T292] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 33.480770][ T292] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 33.480948][ T292] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 33.481111][ T292] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 33.481278][ T292] ? 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) 
[ 33.481473][ T292] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 33.481640][ T292] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 33.481866][ T292] ? __create_object (mm/kmemleak.c:751) 
[ 33.482026][ T292] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 33.482202][ T292] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 33.482325][ T292] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 33.482500][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 33.482665][ T292] ? 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) 
[ 33.482841][ T292] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 33.482966][ T292] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 33.483131][ T292] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 33.483307][ T292] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 33.483483][ T292] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 33.483677][ T292] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 33.483847][ T292] ? 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) 
[ 33.484010][ T292] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 33.484175][ T292] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 33.484333][ T292] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 33.484523][ T292] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 33.484689][ T292] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 33.484847][ T292] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 33.485024][ T292] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 33.485192][ T292] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 33.485371][ T292] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 33.485547][ T292] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 33.485751][ T292] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 33.485936][ T292] ___sys_sendmsg (net/socket.c:2653) 
[ 33.486244][ T292] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 33.486404][ T292] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 33.486578][ T292] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 33.486735][ T292] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 33.487023][ T292] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 33.487186][ T292] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 33.487348][ T292] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 33.487555][ T292] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 33.487808][ T292] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 33.487976][ T292] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 33.488130][ T292] ? __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) 
[ 33.488308][ T292] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 33.488571][ T292] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   33.488769][  T292] RIP: 0033:0x7f262087c7b7
[ 33.488934][ T292] 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)
[   33.489634][  T292] RSP: 002b:00007ffd0bbd85f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   33.489873][  T292] RAX: ffffffffffffffda RBX: 00007ffd0bbd8d20 RCX: 00007f262087c7b7
[   33.490206][  T292] RDX: 0000000000000000 RSI: 00007ffd0bbd8660 RDI: 0000000000000005
[   33.490444][  T292] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[   33.490688][  T292] R10: 000000000241f910 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
lockdep_rcu_suspicious:br_get_link_af_size_filtered:br_info_notify:br_make_forwarding:br_port_state_selection