======================================
| [ 34.102260][ T319] #0: ffffffff8dfbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 34.102854][ T319] #1: ffff8880052fac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   34.103503][  T319]
| [   34.103503][  T319] stack backtrace:
[   34.104353][  T319] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   34.105042][  T319] Call Trace:
[   34.105271][  T319]  <TASK>
[ 34.105433][ T319] dump_stack_lvl (lib/dump_stack.c:122) 
[ 34.105715][ T319] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 34.105914][ T319] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 34.106182][ T319] 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
[ 34.106438][ T319] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 34.106627][ T319] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 34.106831][ T319] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 34.107053][ T319] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 34.107297][ T319] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 34.107518][ T319] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 34.107792][ T319] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 34.108005][ T319] br_add_if (net/bridge/br_if.c:687) bridge
[ 34.108229][ T319] do_setlink (net/core/rtnetlink.c:2907) 
[ 34.108419][ T319] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 34.108616][ T319] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 34.108847][ T319] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 34.109038][ T319] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 34.109227][ T319] ? __kernel_text_address (kernel/extable.c:79) 
[ 34.109412][ T319] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 34.109600][ T319] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 34.109846][ T319] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 34.110054][ T319] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 34.110245][ T319] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 34.110432][ T319] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 34.110618][ T319] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.110783][ T319] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 34.110974][ T319] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 34.111164][ T319] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 34.111358][ T319] ? 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) 
[ 34.111549][ T319] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 34.111761][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.112001][ T319] ? __create_object (mm/kmemleak.c:751) 
[ 34.112194][ T319] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 34.112392][ T319] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 34.112537][ T319] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 34.112738][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.112921][ T319] ? 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) 
[ 34.113114][ T319] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.113258][ T319] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 34.113454][ T319] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 34.113643][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.113842][ T319] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 34.114052][ T319] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 34.114241][ T319] ? 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) 
[ 34.114431][ T319] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 34.114625][ T319] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 34.114826][ T319] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.115031][ T319] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 34.115223][ T319] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 34.115406][ T319] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 34.115601][ T319] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 34.115819][ T319] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 34.116011][ T319] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 34.116204][ T319] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 34.116433][ T319] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 34.116632][ T319] ___sys_sendmsg (net/socket.c:2653) 
[ 34.116838][ T319] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 34.117029][ T319] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.117215][ T319] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 34.117398][ T319] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 34.117644][ T319] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 34.117845][ T319] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 34.118036][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.118270][ T319] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 34.118468][ T319] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 34.118663][ T319] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 34.118853][ T319] ? __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) 
[ 34.119066][ T319] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 34.119260][ T319] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   34.119496][  T319] RIP: 0033:0x7fa6c132e7b7
[ 34.119702][ T319] 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)
[   34.120338][  T319] RSP: 002b:00007ffd2381e058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   34.120616][  T319] RAX: ffffffffffffffda RBX: 00007ffd2381e780 RCX: 00007fa6c132e7b7
[   34.120909][  T319] RDX: 0000000000000000 RSI: 00007ffd2381e0c0 RDI: 0000000000000005
[   34.121191][  T319] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   34.121472][  T319] R10: 000000001b84b910 R11: 0000000000000246 R12: 0000000000000004
[   34.121760][  T319] R13: 0000000066bea654 R14: 0000000000496600 R15: 0000000000000000
| [ 34.124207][ T319] #0: ffffffff8dfbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 34.124556][ T319] #1: ffff8880052fac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   34.124944][  T319]
| [   34.124944][  T319] stack backtrace:
[   34.125465][  T319] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   34.125888][  T319] Call Trace:
[   34.126030][  T319]  <TASK>
[ 34.126132][ T319] dump_stack_lvl (lib/dump_stack.c:122) 
[ 34.126326][ T319] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 34.126511][ T319] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 34.126786][ T319] 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
[ 34.127050][ T319] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 34.127233][ T319] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 34.127423][ T319] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 34.127648][ T319] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 34.127900][ T319] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 34.128119][ T319] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 34.128382][ T319] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 34.128593][ T319] br_add_if (net/bridge/br_if.c:687) bridge
[ 34.128836][ T319] do_setlink (net/core/rtnetlink.c:2907) 
[ 34.129025][ T319] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 34.129215][ T319] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 34.129399][ T319] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 34.129583][ T319] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 34.129801][ T319] ? __kernel_text_address (kernel/extable.c:79) 
[ 34.129986][ T319] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 34.130178][ T319] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 34.130410][ T319] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 34.130611][ T319] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 34.130820][ T319] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 34.131009][ T319] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 34.131197][ T319] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.131344][ T319] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 34.131534][ T319] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 34.131749][ T319] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 34.131942][ T319] ? 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) 
[ 34.132135][ T319] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 34.132327][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.132567][ T319] ? __create_object (mm/kmemleak.c:751) 
[ 34.132773][ T319] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 34.132966][ T319] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 34.133112][ T319] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 34.133302][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.133495][ T319] ? 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) 
[ 34.133691][ T319] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.133839][ T319] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 34.134032][ T319] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 34.134219][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.134416][ T319] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 34.134621][ T319] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 34.134833][ T319] ? 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) 
[ 34.135030][ T319] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 34.135220][ T319] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 34.135405][ T319] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.135598][ T319] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 34.135815][ T319] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 34.136004][ T319] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 34.136196][ T319] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 34.136393][ T319] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 34.136588][ T319] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 34.136791][ T319] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 34.137022][ T319] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 34.137224][ T319] ___sys_sendmsg (net/socket.c:2653) 
[ 34.137415][ T319] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 34.137618][ T319] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.137811][ T319] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 34.137996][ T319] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 34.138239][ T319] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 34.138434][ T319] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 34.138626][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.138883][ T319] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 34.139080][ T319] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 34.139270][ T319] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 34.139459][ T319] ? __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) 
[ 34.139668][ T319] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 34.139862][ T319] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   34.140095][  T319] RIP: 0033:0x7fa6c132e7b7
[ 34.140291][ T319] 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)
[   34.141121][  T319] RSP: 002b:00007ffd2381e058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   34.141409][  T319] RAX: ffffffffffffffda RBX: 00007ffd2381e780 RCX: 00007fa6c132e7b7
[   34.141694][  T319] RDX: 0000000000000000 RSI: 00007ffd2381e0c0 RDI: 0000000000000005
[   34.142088][  T319] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   34.142358][  T319] R10: 000000001b84b910 R11: 0000000000000246 R12: 0000000000000004
[   34.142636][  T319] R13: 0000000066bea654 R14: 0000000000496600 R15: 0000000000000000
| [ 34.145420][ T319] #0: ffffffff8dfbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 34.145875][ T319] #1: ffff8880052fac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   34.146258][  T319]
| [   34.146258][  T319] stack backtrace:
[   34.146941][  T319] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   34.147359][  T319] Call Trace:
[   34.147734][  T319]  <TASK>
[ 34.147837][ T319] dump_stack_lvl (lib/dump_stack.c:122) 
[ 34.148036][ T319] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 34.148227][ T319] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 34.148491][ T319] 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
[ 34.148879][ T319] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 34.149062][ T319] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 34.149248][ T319] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 34.149462][ T319] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 34.149807][ T319] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 34.150025][ T319] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 34.150285][ T319] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 34.150496][ T319] br_add_if (net/bridge/br_if.c:687) bridge
[ 34.150857][ T319] do_setlink (net/core/rtnetlink.c:2907) 
[ 34.151045][ T319] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 34.151232][ T319] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 34.151415][ T319] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 34.151709][ T319] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 34.151901][ T319] ? __kernel_text_address (kernel/extable.c:79) 
[ 34.152081][ T319] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 34.152263][ T319] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 34.152605][ T319] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 34.152803][ T319] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 34.152986][ T319] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 34.153167][ T319] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 34.153475][ T319] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.153621][ T319] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 34.153809][ T319] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 34.154001][ T319] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 34.154193][ T319] ? 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) 
[ 34.154381][ T319] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 34.154573][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.154833][ T319] ? __create_object (mm/kmemleak.c:751) 
[ 34.155027][ T319] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 34.155334][ T319] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 34.155475][ T319] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 34.155663][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.155851][ T319] ? 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) 
[ 34.156147][ T319] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.156293][ T319] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 34.156479][ T319] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 34.156669][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.156860][ T319] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 34.157173][ T319] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 34.157363][ T319] ? 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) 
[ 34.157565][ T319] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 34.157761][ T319] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 34.158070][ T319] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.158260][ T319] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 34.158454][ T319] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 34.158646][ T319] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 34.158979][ T319] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 34.159173][ T319] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 34.159363][ T319] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 34.159546][ T319] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 34.159894][ T319] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 34.160091][ T319] ___sys_sendmsg (net/socket.c:2653) 
[ 34.160286][ T319] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 34.160486][ T319] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.160788][ T319] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 34.160976][ T319] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 34.161219][ T319] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 34.161422][ T319] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 34.161738][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.161989][ T319] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 34.162191][ T319] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 34.162379][ T319] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 34.162810][ T319] ? __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) 
[ 34.163024][ T319] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 34.163225][ T319] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   34.163457][  T319] RIP: 0033:0x7fa6c132e7b7
[ 34.163771][ T319] 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)
[   34.164408][  T319] RSP: 002b:00007ffd2381e058 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   34.164805][  T319] RAX: ffffffffffffffda RBX: 00007ffd2381e780 RCX: 00007fa6c132e7b7
[   34.165095][  T319] RDX: 0000000000000000 RSI: 00007ffd2381e0c0 RDI: 0000000000000005
[   34.165388][  T319] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   34.165790][  T319] R10: 000000001b84b910 R11: 0000000000000246 R12: 0000000000000004
[   34.166070][  T319] R13: 0000000066bea654 R14: 0000000000496600 R15: 0000000000000000
| [   39.143216][  T358] 1 lock held by bridge/358:
| [ 39.143408][ T358] #0: ffffffff8dfbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   39.143791][  T358]
| [   39.143791][  T358] stack backtrace:
[   39.144259][  T358] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   39.144646][  T358] Call Trace:
[   39.144778][  T358]  <TASK>
[ 39.144880][ T358] dump_stack_lvl (lib/dump_stack.c:122) 
[ 39.145063][ T358] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 39.145250][ T358] 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
[ 39.145530][ T358] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 39.145738][ T358] br_setlink (net/bridge/br_netlink.c:669 net/bridge/br_netlink.c:1136) bridge
[ 39.145959][ T358] ? __pfx_br_setlink (net/bridge/br_netlink.c:1085) bridge
[ 39.146176][ T358] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[ 39.146341][ T358] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 39.146547][ T358] ? 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) 
[ 39.146727][ T358] ? __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) 
[ 39.146897][ T358] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:104) 
[ 39.147111][ T358] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 39.147278][ T358] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 39.147448][ T358] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[ 39.147664][ T358] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 39.147832][ T358] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 39.148001][ T358] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 39.148168][ T358] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 39.148347][ T358] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 39.148532][ T358] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[ 39.148728][ T358] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 39.148902][ T358] rtnl_bridge_setlink (net/core/rtnetlink.c:5225) 
[ 39.149088][ T358] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 39.149271][ T358] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 39.149442][ T358] ? 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) 
[ 39.149621][ T358] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 39.149751][ T358] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 39.149919][ T358] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 39.150086][ T358] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 39.150256][ T358] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 39.150469][ T358] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 39.150660][ T358] ? 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) 
[ 39.150828][ T358] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 39.150998][ T358] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 39.151175][ T358] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 39.151347][ T358] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 39.151571][ T358] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 39.151737][ T358] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 39.151919][ T358] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 39.152098][ T358] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 39.152277][ T358] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 39.152448][ T358] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 39.152701][ T358] ___sys_sendmsg (net/socket.c:2653) 
[ 39.152871][ T358] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 39.153038][ T358] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 39.153205][ T358] ? usage_skip (kernel/locking/lockdep.c:2294 kernel/locking/lockdep.c:2262) 
[ 39.153380][ T358] ? reacquire_held_locks (kernel/locking/lockdep.c:5284) 
[ 39.153559][ T358] ? do_user_addr_fault (./include/linux/rcupdate.h:326 ./include/linux/rcupdate.h:838 ./include/linux/mm.h:713 arch/x86/mm/fault.c:1340) 
[ 39.153749][ T358] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 39.153925][ T358] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 39.154097][ T358] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 39.154268][ T358] ? __pfx___up_read (kernel/locking/rwsem.c:1339) 
[ 39.154453][ T358] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 39.154654][ T358] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   39.154864][  T358] RIP: 0033:0x7ff1617277b7
[ 39.155050][ T358] 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)
[   39.155685][  T358] RSP: 002b:00007ffd544be928 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   39.155945][  T358] RAX: ffffffffffffffda RBX: 000000000000ffff RCX: 00007ff1617277b7
[   39.156195][  T358] RDX: 0000000000000000 RSI: 00007ffd544be990 RDI: 0000000000000005
[   39.156450][  T358] RBP: 00007ffd544bea80 R08: 0000000000000034 R09: 0000000000000000
[   39.156736][  T358] R10: 00007ff1615e0708 R11: 0000000000000246 R12: 000000000000000a


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_make_forwarding:br_port_state_selection