======================================
| [ 44.227113][ T344] #0: ffffffff87dbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 44.227715][ T344] #1: ffff888005ce2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   44.228406][  T344]
| [   44.228406][  T344] stack backtrace:
[   44.229360][  T344] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   44.230367][  T344] Call Trace:
[   44.230638][  T344]  <TASK>
[ 44.230815][ T344] dump_stack_lvl (lib/dump_stack.c:122) 
[ 44.231189][ T344] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 44.231530][ T344] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 44.232010][ T344] 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
[ 44.232466][ T344] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 44.232772][ T344] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 44.233117][ T344] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 44.233508][ T344] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 44.233923][ T344] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 44.234339][ T344] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 44.234797][ T344] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 44.235155][ T344] br_add_if (net/bridge/br_if.c:687) bridge
[ 44.235544][ T344] do_setlink (net/core/rtnetlink.c:2907) 
[ 44.235847][ T344] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 44.236182][ T344] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 44.236487][ T344] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 44.236829][ T344] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 44.237186][ T344] ? __kernel_text_address (kernel/extable.c:79) 
[ 44.237515][ T344] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 44.237841][ T344] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 44.238301][ T344] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 44.238670][ T344] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 44.239030][ T344] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 44.239378][ T344] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 44.239716][ T344] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 44.239976][ T344] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 44.240314][ T344] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 44.240701][ T344] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 44.241068][ T344] ? 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) 
[ 44.241406][ T344] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 44.241740][ T344] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 44.242140][ T344] ? __create_object (mm/kmemleak.c:751) 
[ 44.242462][ T344] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 44.242793][ T344] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 44.243034][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 44.243358][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 44.243682][ T344] ? 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) 
[ 44.244019][ T344] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 44.244306][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 44.244647][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 44.244963][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 44.245259][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 44.245582][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 44.245878][ T344] ? 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) 
[ 44.246195][ T344] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 44.246537][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 44.246881][ T344] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 44.247228][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 44.247572][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 44.247872][ T344] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 44.248190][ T344] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 44.248502][ T344] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 44.248844][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 44.249173][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 44.249561][ T344] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 44.249907][ T344] ___sys_sendmsg (net/socket.c:2653) 
[ 44.250217][ T344] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 44.250537][ T344] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 44.250868][ T344] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 44.251189][ T344] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 44.251585][ T344] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 44.251941][ T344] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 44.252290][ T344] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 44.252747][ T344] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 44.253078][ T344] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 44.253449][ T344] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 44.253766][ T344] ? __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) 
[ 44.254177][ T344] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.254543][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   44.255031][  T344] RIP: 0033:0x7f6f2a7e67b7
[ 44.255408][ T344] 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)
[   44.256471][  T344] RSP: 002b:00007ffd7def9ea8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   44.256947][  T344] RAX: ffffffffffffffda RBX: 00007ffd7defa5d0 RCX: 00007f6f2a7e67b7
[   44.257436][  T344] RDX: 0000000000000000 RSI: 00007ffd7def9f10 RDI: 0000000000000005
[   44.257923][  T344] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   44.258391][  T344] R10: 00000000283c3910 R11: 0000000000000246 R12: 0000000000000004
[   44.258897][  T344] R13: 0000000066be9acd R14: 0000000000496600 R15: 0000000000000000
| [ 44.263101][ T344] #0: ffffffff87dbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 44.263748][ T344] #1: ffff888005ce2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   44.264563][  T344]
| [   44.264563][  T344] stack backtrace:
[   44.265472][  T344] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   44.266197][  T344] Call Trace:
[   44.266444][  T344]  <TASK>
[ 44.266609][ T344] dump_stack_lvl (lib/dump_stack.c:122) 
[ 44.266969][ T344] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 44.267266][ T344] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 44.267718][ T344] 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
[ 44.268178][ T344] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 44.268514][ T344] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 44.268853][ T344] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 44.269229][ T344] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 44.269647][ T344] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 44.270018][ T344] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 44.270812][ T344] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 44.271209][ T344] br_add_if (net/bridge/br_if.c:687) bridge
[ 44.271616][ T344] do_setlink (net/core/rtnetlink.c:2907) 
[ 44.271948][ T344] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 44.272497][ T344] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 44.272826][ T344] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 44.273154][ T344] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 44.273480][ T344] ? __kernel_text_address (kernel/extable.c:79) 
[ 44.274030][ T344] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 44.274379][ T344] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 44.274790][ T344] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 44.275180][ T344] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 44.275740][ T344] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 44.276070][ T344] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 44.276384][ T344] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 44.276643][ T344] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 44.276982][ T344] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 44.277320][ T344] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 44.277688][ T344] ? 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) 
[ 44.278040][ T344] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 44.278403][ T344] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 44.278874][ T344] ? __create_object (mm/kmemleak.c:751) 
[ 44.279185][ T344] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 44.279508][ T344] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 44.279745][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 44.280281][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 44.280586][ T344] ? 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) 
[ 44.280901][ T344] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 44.281150][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 44.281676][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 44.281990][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 44.282308][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 44.282692][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 44.283038][ T344] ? 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) 
[ 44.283360][ T344] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 44.283697][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 44.284006][ T344] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 44.284364][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 44.284695][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 44.285078][ T344] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 44.285412][ T344] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 44.285762][ T344] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 44.286093][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 44.286430][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 44.286863][ T344] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 44.287226][ T344] ___sys_sendmsg (net/socket.c:2653) 
[ 44.287744][ T344] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 44.288078][ T344] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 44.288404][ T344] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 44.288716][ T344] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 44.289112][ T344] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 44.289415][ T344] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 44.289728][ T344] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 44.290102][ T344] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 44.290424][ T344] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 44.290718][ T344] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 44.291020][ T344] ? __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) 
[ 44.291373][ T344] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.291671][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   44.292065][  T344] RIP: 0033:0x7f6f2a7e67b7
[ 44.292358][ T344] 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)
[   44.293557][  T344] RSP: 002b:00007ffd7def9ea8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   44.294006][  T344] RAX: ffffffffffffffda RBX: 00007ffd7defa5d0 RCX: 00007f6f2a7e67b7
[   44.294691][  T344] RDX: 0000000000000000 RSI: 00007ffd7def9f10 RDI: 0000000000000005
[   44.295133][  T344] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   44.295598][  T344] R10: 00000000283c3910 R11: 0000000000000246 R12: 0000000000000004
[   44.296086][  T344] R13: 0000000066be9acd R14: 0000000000496600 R15: 0000000000000000
| [ 44.299788][ T344] #0: ffffffff87dbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 44.300201][ T344] #1: ffff888005ce2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   44.300643][  T344]
| [   44.300643][  T344] stack backtrace:
[   44.301278][  T344] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   44.301790][  T344] Call Trace:
[   44.301953][  T344]  <TASK>
[ 44.302072][ T344] dump_stack_lvl (lib/dump_stack.c:122) 
[ 44.302353][ T344] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 44.302644][ T344] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 44.303114][ T344] 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
[ 44.303428][ T344] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 44.303629][ T344] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 44.303917][ T344] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 44.304366][ T344] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 44.304662][ T344] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 44.304892][ T344] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 44.305203][ T344] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 44.305607][ T344] br_add_if (net/bridge/br_if.c:687) bridge
[ 44.305862][ T344] do_setlink (net/core/rtnetlink.c:2907) 
[ 44.306077][ T344] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 44.306324][ T344] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 44.306669][ T344] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 44.306902][ T344] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 44.307099][ T344] ? __kernel_text_address (kernel/extable.c:79) 
[ 44.307327][ T344] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 44.307555][ T344] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 44.307883][ T344] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 44.308112][ T344] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 44.308326][ T344] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 44.308565][ T344] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 44.308774][ T344] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 44.308958][ T344] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 44.309172][ T344] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 44.309393][ T344] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 44.309609][ T344] ? 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) 
[ 44.309816][ T344] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 44.310132][ T344] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 44.310402][ T344] ? __create_object (mm/kmemleak.c:751) 
[ 44.310813][ T344] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 44.311067][ T344] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 44.311245][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 44.311458][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 44.311681][ T344] ? 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) 
[ 44.311880][ T344] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 44.312062][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 44.312269][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 44.312500][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 44.312724][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 44.312958][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 44.313200][ T344] ? 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) 
[ 44.313425][ T344] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 44.313670][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 44.313903][ T344] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 44.314204][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 44.314436][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 44.314647][ T344] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 44.314870][ T344] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 44.315119][ T344] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 44.315337][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 44.315559][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 44.315823][ T344] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 44.316048][ T344] ___sys_sendmsg (net/socket.c:2653) 
[ 44.316287][ T344] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 44.316522][ T344] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 44.316726][ T344] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 44.316938][ T344] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 44.317227][ T344] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 44.317460][ T344] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 44.317678][ T344] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 44.317950][ T344] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 44.318186][ T344] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 44.318403][ T344] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 44.318620][ T344] ? __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) 
[ 44.318848][ T344] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.319063][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   44.319321][  T344] RIP: 0033:0x7f6f2a7e67b7
[ 44.319533][ T344] 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)
[   44.320272][  T344] RSP: 002b:00007ffd7def9ea8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   44.320598][  T344] RAX: ffffffffffffffda RBX: 00007ffd7defa5d0 RCX: 00007f6f2a7e67b7
[   44.320914][  T344] RDX: 0000000000000000 RSI: 00007ffd7def9f10 RDI: 0000000000000005
[   44.321250][  T344] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   44.321561][  T344] R10: 00000000283c3910 R11: 0000000000000246 R12: 0000000000000004


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