======================================
| [ 36.919070][ T340] #0: ffffffff889bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.919439][ T340] #1: ffff88800607ac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.919852][  T340]
| [   36.919852][  T340] stack backtrace:
[   36.920385][  T340] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.920820][  T340] Call Trace:
[   36.920969][  T340]  <TASK>
[ 36.921069][ T340] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.921309][ T340] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.921494][ T340] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.921782][ T340] 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
[ 36.922053][ T340] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.922242][ T340] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.922434][ T340] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.922649][ T340] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.922882][ T340] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.923100][ T340] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.923368][ T340] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.923593][ T340] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.923830][ T340] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.924018][ T340] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.924215][ T340] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.924404][ T340] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.924588][ T340] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.924787][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.924975][ T340] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.925164][ T340] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.925401][ T340] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.925612][ T340] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.925798][ T340] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.925994][ T340] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.926186][ T340] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.926336][ T340] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.926528][ T340] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.926720][ T340] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.926927][ T340] ? 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) 
[ 36.927147][ T340] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.927352][ T340] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.927621][ T340] ? __create_object (mm/kmemleak.c:751) 
[ 36.927827][ T340] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.928035][ T340] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.928186][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.928396][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.928591][ T340] ? 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) 
[ 36.928803][ T340] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.928960][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.929175][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.929363][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.929561][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.929784][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.929972][ T340] ? 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) 
[ 36.930159][ T340] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.930349][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.930538][ T340] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.930743][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.930937][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.931124][ T340] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.931314][ T340] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.931511][ T340] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.931703][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.931886][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.932120][ T340] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.932337][ T340] ___sys_sendmsg (net/socket.c:2653) 
[ 36.932538][ T340] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.932724][ T340] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.932920][ T340] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.933119][ T340] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.933348][ T340] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.933539][ T340] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.933732][ T340] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.933975][ T340] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.934168][ T340] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.934352][ T340] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.934535][ T340] ? __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) 
[ 36.934744][ T340] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.934931][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.935158][  T340] RIP: 0033:0x7f30ec52b7b7
[ 36.935350][ T340] 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)
[   36.935988][  T340] RSP: 002b:00007fff4a3897d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.936268][  T340] RAX: ffffffffffffffda RBX: 00007fff4a389f00 RCX: 00007f30ec52b7b7
[   36.936545][  T340] RDX: 0000000000000000 RSI: 00007fff4a389840 RDI: 0000000000000005
[   36.936827][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.937132][  T340] R10: 00000000120cd910 R11: 0000000000000246 R12: 0000000000000004
[   36.937442][  T340] R13: 0000000066bea65d R14: 0000000000496600 R15: 0000000000000000
| [ 36.940016][ T340] #0: ffffffff889bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.940386][ T340] #1: ffff88800607ac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.940782][  T340]
| [   36.940782][  T340] stack backtrace:
[   36.941334][  T340] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.941775][  T340] Call Trace:
[   36.941927][  T340]  <TASK>
[ 36.942035][ T340] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.942242][ T340] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.942446][ T340] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.942730][ T340] 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
[ 36.943013][ T340] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.943211][ T340] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.943418][ T340] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.943648][ T340] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.943900][ T340] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.944132][ T340] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.944416][ T340] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.944648][ T340] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.944889][ T340] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.945089][ T340] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.945296][ T340] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.945496][ T340] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.945697][ T340] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.945900][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.946103][ T340] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.946302][ T340] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.946549][ T340] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.946762][ T340] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.946962][ T340] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.947171][ T340] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.947371][ T340] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.947528][ T340] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.947735][ T340] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.947944][ T340] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.948151][ T340] ? 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) 
[ 36.948353][ T340] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.948559][ T340] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.948811][ T340] ? __create_object (mm/kmemleak.c:751) 
[ 36.949013][ T340] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.949225][ T340] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.949378][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.949584][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.949782][ T340] ? 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) 
[ 36.949981][ T340] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.950142][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.950346][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.950546][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.950753][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.950968][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.951175][ T340] ? 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) 
[ 36.951395][ T340] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.951598][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.951797][ T340] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.952005][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.952209][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.952406][ T340] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.952607][ T340] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.952817][ T340] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.953193][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.953378][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.953626][ T340] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.953837][ T340] ___sys_sendmsg (net/socket.c:2653) 
[ 36.954145][ T340] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.954334][ T340] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.954530][ T340] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.954738][ T340] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.955099][ T340] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.955297][ T340] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.955501][ T340] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.955748][ T340] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.956066][ T340] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.956264][ T340] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.956463][ T340] ? __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) 
[ 36.956688][ T340] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.956888][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.957259][  T340] RIP: 0033:0x7f30ec52b7b7
[ 36.957461][ T340] 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)
[   36.958255][  T340] RSP: 002b:00007fff4a3897d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.958557][  T340] RAX: ffffffffffffffda RBX: 00007fff4a389f00 RCX: 00007f30ec52b7b7
[   36.959076][  T340] RDX: 0000000000000000 RSI: 00007fff4a389840 RDI: 0000000000000005
[   36.959362][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.959658][  T340] R10: 00000000120cd910 R11: 0000000000000246 R12: 0000000000000004
[   36.960065][  T340] R13: 0000000066bea65d R14: 0000000000496600 R15: 0000000000000000
| [ 36.962937][ T340] #0: ffffffff889bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.963301][ T340] #1: ffff88800607ac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.963696][  T340]
| [   36.963696][  T340] stack backtrace:
[   36.964351][  T340] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.964914][  T340] Call Trace:
[   36.965079][  T340]  <TASK>
[ 36.965186][ T340] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.965399][ T340] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.965597][ T340] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.965996][ T340] 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
[ 36.966271][ T340] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.966467][ T340] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.966669][ T340] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.967012][ T340] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.967272][ T340] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.967502][ T340] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.967781][ T340] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.968128][ T340] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.968360][ T340] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.968570][ T340] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.968772][ T340] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.969076][ T340] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.969278][ T340] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.969477][ T340] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.969685][ T340] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.969994][ T340] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.970245][ T340] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.970460][ T340] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.970659][ T340] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.970969][ T340] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.971169][ T340] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.971324][ T340] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.971529][ T340] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.971735][ T340] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.972052][ T340] ? 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) 
[ 36.972251][ T340] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.972454][ T340] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.972705][ T340] ? __create_object (mm/kmemleak.c:751) 
[ 36.973018][ T340] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.973226][ T340] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.973377][ T340] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.973578][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.973886][ T340] ? 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) 
[ 36.974083][ T340] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.974237][ T340] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.974437][ T340] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.974639][ T340] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.975063][ T340] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.975279][ T340] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.975478][ T340] ? 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) 
[ 36.975676][ T340] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.975999][ T340] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.976213][ T340] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.976416][ T340] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.976624][ T340] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.976933][ T340] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.977151][ T340] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.977358][ T340] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.977561][ T340] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.977762][ T340] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.978118][ T340] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.978328][ T340] ___sys_sendmsg (net/socket.c:2653) 
[ 36.978531][ T340] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.978731][ T340] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.979042][ T340] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.979241][ T340] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.979486][ T340] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.979698][ T340] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.980014][ T340] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.980262][ T340] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.980471][ T340] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.980674][ T340] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.980981][ T340] ? __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) 
[ 36.981201][ T340] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.981403][ T340] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.981648][  T340] RIP: 0033:0x7f30ec52b7b7
[ 36.981964][ T340] 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)
[   36.982759][  T340] RSP: 002b:00007fff4a3897d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.983046][  T340] RAX: ffffffffffffffda RBX: 00007fff4a389f00 RCX: 00007f30ec52b7b7
[   36.983340][  T340] RDX: 0000000000000000 RSI: 00007fff4a389840 RDI: 0000000000000005
[   36.983748][  T340] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.984043][  T340] R10: 00000000120cd910 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