======================================
| [2132.692059][T15479] #0: ffffffff8afdcac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [2132.692357][T15479] #1: ffff88800eec2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) 
| [ 2132.692640][T15479]
| [ 2132.692640][T15479] stack backtrace:
[ 2132.693078][T15479] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 2132.693429][T15479] Call Trace:
[ 2132.693556][T15479]  <TASK>
[2132.693644][T15479] dump_stack_lvl (lib/dump_stack.c:122) 
[2132.693813][T15479] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[2132.693975][T15479] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) 
[2132.694142][T15479] br_get_link_af_size_filtered (net/bridge/br_private.h:930 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) 
[2132.694343][T15479] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[2132.694503][T15479] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[2132.694666][T15479] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) 
[2132.694822][T15479] ? __do_sys_set_mempolicy_home_node (mm/mempolicy.c:1557) 
[2132.695026][T15479] br_make_forwarding (net/bridge/br_stp.c:465) 
[2132.695188][T15479] br_port_state_selection (net/bridge/br_stp.c:495) 
[2132.695351][T15479] br_stp_enable_port (net/bridge/br_stp_if.c:95) 
[2132.695512][T15479] br_add_if (net/bridge/br_if.c:687) 
[2132.695636][T15479] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[2132.695793][T15479] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[2132.695996][T15479] do_setlink (net/core/rtnetlink.c:2907) 
[2132.696155][T15479] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[2132.696314][T15479] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[2132.696471][T15479] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[2132.696630][T15479] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[2132.696797][T15479] ? __kernel_text_address (kernel/extable.c:79) 
[2132.696958][T15479] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[2132.697116][T15479] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[2132.697317][T15479] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[2132.697491][T15479] ? stack_trace_save (kernel/stacktrace.c:123) 
[2132.697649][T15479] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[2132.697807][T15479] ? __pfx_validate_nla (lib/nlattr.c:396) 
[2132.697970][T15479] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[2132.698098][T15479] ? kasan_save_stack (mm/kasan/common.c:49) 
[2132.698259][T15479] ? __nla_validate_parse (lib/nlattr.c:638) 
[2132.698424][T15479] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[2132.698588][T15479] ? 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) 
[2132.698750][T15479] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[2132.698916][T15479] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[2132.699125][T15479] ? __create_object (mm/kmemleak.c:751) 
[2132.699286][T15479] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[2132.699460][T15479] rtnl_newlink (net/core/rtnetlink.c:3744) 
[2132.699581][T15479] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[2132.699740][T15479] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[2132.699898][T15479] ? 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) 
[2132.700057][T15479] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[2132.700182][T15479] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[2132.700343][T15479] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[2132.700504][T15479] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[2132.700664][T15479] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[2132.700845][T15479] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[2132.701006][T15479] ? 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) 
[2132.701167][T15479] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[2132.701332][T15479] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[2132.701495][T15479] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[2132.701661][T15479] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[2132.701827][T15479] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[2132.701990][T15479] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[2132.702157][T15479] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[2132.702324][T15479] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[2132.702486][T15479] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[2132.702644][T15479] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[2132.702844][T15479] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[2132.703014][T15479] ___sys_sendmsg (net/socket.c:2653) 
[2132.703175][T15479] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[2132.703339][T15479] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[2132.703503][T15479] ? __lock_release (kernel/locking/lockdep.c:5435) 
[2132.703661][T15479] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[2132.703860][T15479] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[2132.704022][T15479] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[2132.704190][T15479] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[2132.704388][T15479] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[2132.704554][T15479] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[2132.704717][T15479] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[2132.704877][T15479] ? __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) 
[2132.705058][T15479] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[2132.705222][T15479] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2132.705418][T15479] RIP: 0033:0x7fd0edb157b7
[ 2132.705586][T15479] 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)
[ 2132.706136][T15479] RSP: 002b:00007ffec0639588 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 2132.706383][T15479] RAX: ffffffffffffffda RBX: 00007ffec0639cc0 RCX: 00007fd0edb157b7
[ 2132.706617][T15479] RDX: 0000000000000000 RSI: 00007ffec06395f0 RDI: 0000000000000005
[ 2132.706851][T15479] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[ 2132.707093][T15479] R10: 000000003d4a5910 R11: 0000000000000246 R12: 0000000000000003
[ 2132.707329][T15479] R13: 0000000066bea94f R14: 0000000000496600 R15: 0000000000000000
| [2132.709387][T15479] #0: ffffffff8afdcac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [2132.709677][T15479] #1: ffff88800eec2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) 
| [ 2132.709965][T15479]
| [ 2132.709965][T15479] stack backtrace:
[ 2132.710390][T15479] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 2132.710733][T15479] Call Trace:
[ 2132.710857][T15479]  <TASK>
[2132.710948][T15479] dump_stack_lvl (lib/dump_stack.c:122) 
[2132.711111][T15479] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[2132.711267][T15479] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) 
[2132.711428][T15479] br_get_link_af_size_filtered (net/bridge/br_private.h:453 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) 
[2132.711625][T15479] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[2132.711783][T15479] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[2132.711944][T15479] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) 
[2132.712103][T15479] ? __do_sys_set_mempolicy_home_node (mm/mempolicy.c:1557) 
[2132.712306][T15479] br_make_forwarding (net/bridge/br_stp.c:465) 
[2132.712467][T15479] br_port_state_selection (net/bridge/br_stp.c:495) 
[2132.712633][T15479] br_stp_enable_port (net/bridge/br_stp_if.c:95) 
[2132.712789][T15479] br_add_if (net/bridge/br_if.c:687) 
[2132.712913][T15479] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[2132.713070][T15479] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[2132.713267][T15479] do_setlink (net/core/rtnetlink.c:2907) 
[2132.713425][T15479] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[2132.713592][T15479] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[2132.713751][T15479] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[2132.713907][T15479] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[2132.714065][T15479] ? __kernel_text_address (kernel/extable.c:79) 
[2132.714221][T15479] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[2132.714377][T15479] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[2132.714576][T15479] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[2132.714750][T15479] ? stack_trace_save (kernel/stacktrace.c:123) 
[2132.714906][T15479] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[2132.715063][T15479] ? __pfx_validate_nla (lib/nlattr.c:396) 
[2132.715358][T15479] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[2132.715481][T15479] ? kasan_save_stack (mm/kasan/common.c:49) 
[2132.715641][T15479] ? __nla_validate_parse (lib/nlattr.c:638) 
[2132.715807][T15479] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[2132.716061][T15479] ? 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) 
[2132.716219][T15479] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[2132.716386][T15479] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[2132.716582][T15479] ? __create_object (mm/kmemleak.c:751) 
[2132.716831][T15479] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[2132.716999][T15479] rtnl_newlink (net/core/rtnetlink.c:3744) 
[2132.717119][T15479] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[2132.717277][T15479] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[2132.717432][T15479] ? 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) 
[2132.717681][T15479] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[2132.717810][T15479] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[2132.717969][T15479] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[2132.718127][T15479] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[2132.718377][T15479] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[2132.718549][T15479] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[2132.718707][T15479] ? 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) 
[2132.718865][T15479] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[2132.719033][T15479] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[2132.719298][T15479] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[2132.719464][T15479] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[2132.719625][T15479] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[2132.719778][T15479] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[2132.720035][T15479] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[2132.720197][T15479] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[2132.720357][T15479] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[2132.720515][T15479] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[2132.720720][T15479] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[2132.720888][T15479] ___sys_sendmsg (net/socket.c:2653) 
[2132.721049][T15479] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[2132.721207][T15479] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[2132.721461][T15479] ? __lock_release (kernel/locking/lockdep.c:5435) 
[2132.721615][T15479] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[2132.721812][T15479] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[2132.721976][T15479] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[2132.722238][T15479] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[2132.722434][T15479] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[2132.722596][T15479] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[2132.722753][T15479] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[2132.723012][T15479] ? __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) 
[2132.723193][T15479] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[2132.723350][T15479] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2132.723543][T15479] RIP: 0033:0x7fd0edb157b7
[ 2132.723715][T15479] 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)
[ 2132.724271][T15479] RSP: 002b:00007ffec0639588 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 2132.724613][T15479] RAX: ffffffffffffffda RBX: 00007ffec0639cc0 RCX: 00007fd0edb157b7
[ 2132.724847][T15479] RDX: 0000000000000000 RSI: 00007ffec06395f0 RDI: 0000000000000005
[ 2132.725088][T15479] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[ 2132.725514][T15479] R10: 000000003d4a5910 R11: 0000000000000246 R12: 0000000000000003
[ 2132.725746][T15479] R13: 0000000066bea94f R14: 0000000000496600 R15: 0000000000000000
| [2132.728063][T15479] #0: ffffffff8afdcac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [2132.728443][T15479] #1: ffff88800eec2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) 
| [ 2132.728724][T15479]
| [ 2132.728724][T15479] stack backtrace:
[ 2132.729271][T15479] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[ 2132.729615][T15479] Call Trace:
[ 2132.729734][T15479]  <TASK>
[2132.729819][T15479] dump_stack_lvl (lib/dump_stack.c:122) 
[2132.730109][T15479] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[2132.730265][T15479] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) 
[2132.730426][T15479] br_get_link_af_size_filtered (net/bridge/br_private.h:1611 net/bridge/br_private.h:1608 net/bridge/br_netlink.c:107) 
[2132.730631][T15479] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[2132.730786][T15479] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[2132.730946][T15479] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) 
[2132.731105][T15479] ? __do_sys_set_mempolicy_home_node (mm/mempolicy.c:1557) 
[2132.731304][T15479] br_make_forwarding (net/bridge/br_stp.c:465) 
[2132.731463][T15479] br_port_state_selection (net/bridge/br_stp.c:495) 
[2132.731624][T15479] br_stp_enable_port (net/bridge/br_stp_if.c:95) 
[2132.731779][T15479] br_add_if (net/bridge/br_if.c:687) 
[2132.731901][T15479] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[2132.732167][T15479] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[2132.732368][T15479] do_setlink (net/core/rtnetlink.c:2907) 
[2132.732525][T15479] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[2132.732683][T15479] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[2132.732936][T15479] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[2132.733092][T15479] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[2132.733251][T15479] ? __kernel_text_address (kernel/extable.c:79) 
[2132.733414][T15479] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[2132.733571][T15479] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[2132.733764][T15479] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[2132.733932][T15479] ? stack_trace_save (kernel/stacktrace.c:123) 
[2132.734089][T15479] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[2132.734335][T15479] ? __pfx_validate_nla (lib/nlattr.c:396) 
[2132.734495][T15479] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[2132.734618][T15479] ? kasan_save_stack (mm/kasan/common.c:49) 
[2132.734777][T15479] ? __nla_validate_parse (lib/nlattr.c:638) 
[2132.734946][T15479] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[2132.735198][T15479] ? 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) 
[2132.735355][T15479] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[2132.735516][T15479] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[2132.735716][T15479] ? __create_object (mm/kmemleak.c:751) 
[2132.735987][T15479] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[2132.736150][T15479] rtnl_newlink (net/core/rtnetlink.c:3744) 
[2132.736272][T15479] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[2132.736436][T15479] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[2132.736593][T15479] ? 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) 
[2132.736971][T15479] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[2132.737096][T15479] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[2132.737257][T15479] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[2132.737413][T15479] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[2132.737753][T15479] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[2132.737925][T15479] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[2132.738087][T15479] ? 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) 
[2132.738249][T15479] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[2132.738499][T15479] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[2132.738656][T15479] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[2132.738818][T15479] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[2132.738977][T15479] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[2132.739231][T15479] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[2132.739389][T15479] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[2132.739559][T15479] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[2132.739718][T15479] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[2132.739874][T15479] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[2132.740163][T15479] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[2132.740330][T15479] ___sys_sendmsg (net/socket.c:2653) 
[2132.740489][T15479] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[2132.740650][T15479] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[2132.740809][T15479] ? __lock_release (kernel/locking/lockdep.c:5435) 
[2132.740968][T15479] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[2132.741168][T15479] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[2132.741328][T15479] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[2132.741584][T15479] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[2132.741782][T15479] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[2132.741946][T15479] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[2132.742104][T15479] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[2132.742349][T15479] ? __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) 
[2132.742530][T15479] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[2132.742688][T15479] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2132.742885][T15479] RIP: 0033:0x7fd0edb157b7
[ 2132.743150][T15479] 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)
[ 2132.743694][T15479] RSP: 002b:00007ffec0639588 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[ 2132.743934][T15479] RAX: ffffffffffffffda RBX: 00007ffec0639cc0 RCX: 00007fd0edb157b7
[ 2132.744170][T15479] RDX: 0000000000000000 RSI: 00007ffec06395f0 RDI: 0000000000000005
[ 2132.744494][T15479] RBP: 0000000000000003 R08: 0000000000000003 R09: 0000000000000000
[ 2132.744728][T15479] R10: 000000003d4a5910 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