======================================
| [ 36.880134][ T338] #0: ffffffff90fbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.880478][ T338] #1: ffff8880078f2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.880912][  T338]
| [   36.880912][  T338] stack backtrace:
[   36.881430][  T338] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.881840][  T338] Call Trace:
[   36.881986][  T338]  <TASK>
[ 36.882094][ T338] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.882303][ T338] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.882495][ T338] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.882769][ T338] 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
[ 36.883028][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.883214][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.883403][ T338] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.883619][ T338] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.883860][ T338] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.884077][ T338] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.884345][ T338] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.884563][ T338] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.884790][ T338] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.884978][ T338] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.885173][ T338] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.885364][ T338] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.885550][ T338] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.885740][ T338] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.885926][ T338] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.886113][ T338] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.886347][ T338] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.886552][ T338] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.886743][ T338] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.886933][ T338] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.887123][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.887268][ T338] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.887463][ T338] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.887662][ T338] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.887867][ T338] ? 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) 
[ 36.888059][ T338] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.888253][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.888497][ T338] ? __create_object (mm/kmemleak.c:751) 
[ 36.888692][ T338] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.888886][ T338] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.889027][ T338] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.889223][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.889410][ T338] ? 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) 
[ 36.889597][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.889747][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.889936][ T338] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.890136][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.890327][ T338] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.890535][ T338] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.890729][ T338] ? 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) 
[ 36.890924][ T338] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.891118][ T338] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.891309][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.891502][ T338] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.891703][ T338] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.891888][ T338] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.892080][ T338] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.892278][ T338] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.892473][ T338] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.892661][ T338] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.892894][ T338] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.893094][ T338] ___sys_sendmsg (net/socket.c:2653) 
[ 36.893308][ T338] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.893497][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.893689][ T338] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.893875][ T338] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.894110][ T338] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.894303][ T338] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.894498][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.894742][ T338] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.894940][ T338] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.895129][ T338] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.895314][ T338] ? __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) 
[ 36.895524][ T338] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.895716][ T338] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.895952][  T338] RIP: 0033:0x7fb62e19f7b7
[ 36.896147][ T338] 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)
[   36.896797][  T338] RSP: 002b:00007fffad5e2728 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.897084][  T338] RAX: ffffffffffffffda RBX: 00007fffad5e2e50 RCX: 00007fb62e19f7b7
[   36.897368][  T338] RDX: 0000000000000000 RSI: 00007fffad5e2790 RDI: 0000000000000005
[   36.897651][  T338] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.897933][  T338] R10: 0000000034fd0910 R11: 0000000000000246 R12: 0000000000000004
[   36.898212][  T338] R13: 0000000066bea0d0 R14: 0000000000496600 R15: 0000000000000000
| [ 36.900651][ T338] #0: ffffffff90fbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.901001][ T338] #1: ffff8880078f2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.901376][  T338]
| [   36.901376][  T338] stack backtrace:
[   36.901908][  T338] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.902323][  T338] Call Trace:
[   36.902465][  T338]  <TASK>
[ 36.902566][ T338] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.902763][ T338] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.902950][ T338] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.903219][ T338] 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
[ 36.903479][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.903669][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.903865][ T338] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.904082][ T338] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.904319][ T338] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.904536][ T338] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.904804][ T338] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.905023][ T338] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.905256][ T338] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.905447][ T338] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.905640][ T338] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.905832][ T338] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.906019][ T338] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.906208][ T338] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.906396][ T338] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.906589][ T338] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.906821][ T338] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.907019][ T338] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.907202][ T338] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.907388][ T338] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.907577][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.907725][ T338] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.907922][ T338] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.908112][ T338] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.908312][ T338] ? 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) 
[ 36.908498][ T338] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.908689][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.908919][ T338] ? __create_object (mm/kmemleak.c:751) 
[ 36.909111][ T338] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.909301][ T338] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.909443][ T338] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.909629][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.909815][ T338] ? 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) 
[ 36.910002][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.910147][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.910336][ T338] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.910521][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.910709][ T338] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.910910][ T338] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.911094][ T338] ? 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) 
[ 36.911280][ T338] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.911478][ T338] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.911663][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.911852][ T338] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.912039][ T338] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.912223][ T338] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.912409][ T338] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.912602][ T338] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.912795][ T338] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.912982][ T338] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.913210][ T338] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.913405][ T338] ___sys_sendmsg (net/socket.c:2653) 
[ 36.913592][ T338] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.913777][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.913969][ T338] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.914150][ T338] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.914378][ T338] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.914577][ T338] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.914771][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.914999][ T338] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.915195][ T338] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.915379][ T338] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.915563][ T338] ? __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) 
[ 36.915770][ T338] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.915956][ T338] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.916190][  T338] RIP: 0033:0x7fb62e19f7b7
[ 36.916592][ T338] 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)
[   36.917219][  T338] RSP: 002b:00007fffad5e2728 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.917604][  T338] RAX: ffffffffffffffda RBX: 00007fffad5e2e50 RCX: 00007fb62e19f7b7
[   36.917893][  T338] RDX: 0000000000000000 RSI: 00007fffad5e2790 RDI: 0000000000000005
[   36.918275][  T338] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.918545][  T338] R10: 0000000034fd0910 R11: 0000000000000246 R12: 0000000000000004
[   36.918817][  T338] R13: 0000000066bea0d0 R14: 0000000000496600 R15: 0000000000000000
| [ 36.921553][ T338] #0: ffffffff90fbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.922016][ T338] #1: ffff8880078f2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.922381][  T338]
| [   36.922381][  T338] stack backtrace:
[   36.923117][  T338] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.923522][  T338] Call Trace:
[   36.923667][  T338]  <TASK>
[ 36.923769][ T338] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.924074][ T338] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.924257][ T338] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.924525][ T338] 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
[ 36.924895][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.925080][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.925268][ T338] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.925479][ T338] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.925820][ T338] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.926035][ T338] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.926305][ T338] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.926522][ T338] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.926889][ T338] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.927077][ T338] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.927265][ T338] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.927448][ T338] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.927632][ T338] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.927940][ T338] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.928126][ T338] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.928309][ T338] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.928536][ T338] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.928879][ T338] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.929062][ T338] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.929245][ T338] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.929437][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.929586][ T338] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.929775][ T338] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.929965][ T338] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.930156][ T338] ? 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) 
[ 36.930342][ T338] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.930532][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.930771][ T338] ? __create_object (mm/kmemleak.c:751) 
[ 36.930958][ T338] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.931149][ T338] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.931295][ T338] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.931480][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.931663][ T338] ? 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) 
[ 36.931850][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.932107][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.932294][ T338] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.932480][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.932667][ T338] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.932984][ T338] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.933169][ T338] ? 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) 
[ 36.933358][ T338] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.933546][ T338] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.933733][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.934034][ T338] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.934223][ T338] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.934406][ T338] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.934597][ T338] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.934902][ T338] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.935088][ T338] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.935270][ T338] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.935496][ T338] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.935837][ T338] ___sys_sendmsg (net/socket.c:2653) 
[ 36.936023][ T338] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.936212][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.936403][ T338] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.936586][ T338] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.936813][ T338] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.937001][ T338] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.937190][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.937428][ T338] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.937621][ T338] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.937813][ T338] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.938002][ T338] ? __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) 
[ 36.938321][ T338] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.938506][ T338] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.938737][  T338] RIP: 0033:0x7fb62e19f7b7
[ 36.938926][ T338] 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)
[   36.939670][  T338] RSP: 002b:00007fffad5e2728 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.940061][  T338] RAX: ffffffffffffffda RBX: 00007fffad5e2e50 RCX: 00007fb62e19f7b7
[   36.940337][  T338] RDX: 0000000000000000 RSI: 00007fffad5e2790 RDI: 0000000000000005
[   36.940607][  T338] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.940989][  T338] R10: 0000000034fd0910 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