======================================
| [ 36.154084][ T335] #0: ffffffff9cfbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.154431][ T335] #1: ffff888007a4ac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.154841][  T335]
| [   36.154841][  T335] stack backtrace:
[   36.155349][  T335] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.155754][  T335] Call Trace:
[   36.155899][  T335]  <TASK>
[ 36.155997][ T335] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.156191][ T335] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.156381][ T335] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.156645][ T335] 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
[ 36.156910][ T335] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.157094][ T335] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.157281][ T335] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.157497][ T335] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.157734][ T335] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.157958][ T335] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.158227][ T335] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.158440][ T335] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.158667][ T335] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.158854][ T335] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.159050][ T335] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.159235][ T335] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.159423][ T335] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.159610][ T335] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.159800][ T335] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.159983][ T335] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.160213][ T335] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.160411][ T335] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.160603][ T335] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.160790][ T335] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.160991][ T335] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.161145][ T335] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.161339][ T335] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.161531][ T335] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.161729][ T335] ? 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) 
[ 36.161922][ T335] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.162113][ T335] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.162353][ T335] ? __create_object (mm/kmemleak.c:751) 
[ 36.162549][ T335] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.162747][ T335] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.162891][ T335] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.163084][ T335] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.163269][ T335] ? 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) 
[ 36.163454][ T335] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.163600][ T335] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.163793][ T335] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.163982][ T335] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.164172][ T335] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.164374][ T335] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.164562][ T335] ? 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) 
[ 36.164752][ T335] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.164940][ T335] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.165124][ T335] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.165315][ T335] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.165512][ T335] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.165701][ T335] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.165895][ T335] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.166088][ T335] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.166277][ T335] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.166457][ T335] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.166688][ T335] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.166902][ T335] ___sys_sendmsg (net/socket.c:2653) 
[ 36.167090][ T335] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.167277][ T335] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.167463][ T335] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.167646][ T335] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.167878][ T335] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.168066][ T335] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.168261][ T335] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.168493][ T335] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.168692][ T335] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.168877][ T335] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.169062][ T335] ? __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) 
[ 36.169268][ T335] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.169458][ T335] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.169688][  T335] RIP: 0033:0x7f0812c447b7
[ 36.169875][ T335] 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)
[   36.170509][  T335] RSP: 002b:00007ffc9872ddd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.170788][  T335] RAX: ffffffffffffffda RBX: 00007ffc9872e500 RCX: 00007f0812c447b7
[   36.171070][  T335] RDX: 0000000000000000 RSI: 00007ffc9872de40 RDI: 0000000000000005
[   36.171342][  T335] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.171651][  T335] R10: 0000000022f7a910 R11: 0000000000000246 R12: 0000000000000004
[   36.171931][  T335] R13: 0000000066bea6c5 R14: 0000000000496600 R15: 0000000000000000
| [ 36.174296][ T335] #0: ffffffff9cfbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.174643][ T335] #1: ffff888007a4ac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.175004][  T335]
| [   36.175004][  T335] stack backtrace:
[   36.175512][  T335] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.175925][  T335] Call Trace:
[   36.176067][  T335]  <TASK>
[ 36.176166][ T335] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.176357][ T335] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.176541][ T335] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.176837][ T335] 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
[ 36.177099][ T335] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.177283][ T335] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.177478][ T335] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.177702][ T335] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.177943][ T335] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.178158][ T335] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.178420][ T335] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.178812][ T335] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.179057][ T335] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.179259][ T335] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.179449][ T335] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.179747][ T335] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.179936][ T335] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.180128][ T335] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.180317][ T335] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.180630][ T335] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.180862][ T335] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.181065][ T335] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.181251][ T335] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.181544][ T335] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.181731][ T335] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.181877][ T335] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.182065][ T335] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.182258][ T335] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.182564][ T335] ? 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) 
[ 36.182755][ T335] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.182947][ T335] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.183181][ T335] ? __create_object (mm/kmemleak.c:751) 
[ 36.183589][ T335] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.183782][ T335] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.183927][ T335] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.184114][ T335] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.184408][ T335] ? 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) 
[ 36.184592][ T335] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.184745][ T335] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.184932][ T335] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.185117][ T335] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.185416][ T335] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.185617][ T335] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.185801][ T335] ? 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) 
[ 36.185987][ T335] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.186294][ T335] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.186485][ T335] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.186674][ T335] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.186878][ T335] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.187170][ T335] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.187358][ T335] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.187551][ T335] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.187738][ T335] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.187922][ T335] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.188261][ T335] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.188458][ T335] ___sys_sendmsg (net/socket.c:2653) 
[ 36.188647][ T335] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.188834][ T335] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.189130][ T335] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.189313][ T335] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.189543][ T335] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.189730][ T335] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.190034][ T335] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.190263][ T335] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.190458][ T335] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.190641][ T335] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.190932][ T335] ? __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) 
[ 36.191141][ T335] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.191325][ T335] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.191560][  T335] RIP: 0033:0x7f0812c447b7
[ 36.191865][ T335] 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)
[   36.192611][  T335] RSP: 002b:00007ffc9872ddd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.192890][  T335] RAX: ffffffffffffffda RBX: 00007ffc9872e500 RCX: 00007f0812c447b7
[   36.193165][  T335] RDX: 0000000000000000 RSI: 00007ffc9872de40 RDI: 0000000000000005
[   36.193579][  T335] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.193851][  T335] R10: 0000000022f7a910 R11: 0000000000000246 R12: 0000000000000004
[   36.194127][  T335] R13: 0000000066bea6c5 R14: 0000000000496600 R15: 0000000000000000
| [ 36.196830][ T335] #0: ffffffff9cfbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.197275][ T335] #1: ffff888007a4ac58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.197643][  T335]
| [   36.197643][  T335] stack backtrace:
[   36.198374][  T335] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.198785][  T335] Call Trace:
[   36.198926][  T335]  <TASK>
[ 36.199132][ T335] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.199322][ T335] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.199509][ T335] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.199777][ T335] 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
[ 36.200148][ T335] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.200333][ T335] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.200523][ T335] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.200738][ T335] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.201080][ T335] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.201297][ T335] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.201565][ T335] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.201813][ T335] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.202152][ T335] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.202341][ T335] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.202529][ T335] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.202718][ T335] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.203014][ T335] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.203202][ T335] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.203392][ T335] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.203587][ T335] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.203922][ T335] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.204121][ T335] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.204302][ T335] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.204484][ T335] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.204669][ T335] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.204921][ T335] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.205114][ T335] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.205304][ T335] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.205497][ T335] ? 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) 
[ 36.205794][ T335] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.205984][ T335] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.206215][ T335] ? __create_object (mm/kmemleak.c:751) 
[ 36.206407][ T335] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.206724][ T335] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.206892][ T335] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.207085][ T335] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.207267][ T335] ? 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) 
[ 36.207452][ T335] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.207709][ T335] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.207895][ T335] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.208078][ T335] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.208263][ T335] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.208579][ T335] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.208773][ T335] ? 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) 
[ 36.208963][ T335] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.209170][ T335] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.209482][ T335] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.209673][ T335] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.209864][ T335] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.210052][ T335] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.210241][ T335] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.210549][ T335] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.210738][ T335] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.210924][ T335] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.211152][ T335] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.211461][ T335] ___sys_sendmsg (net/socket.c:2653) 
[ 36.211651][ T335] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.211839][ T335] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.212029][ T335] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.212326][ T335] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.212557][ T335] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.212745][ T335] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.212936][ T335] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.213388][ T335] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.213586][ T335] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.213770][ T335] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.213954][ T335] ? __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) 
[ 36.214273][ T335] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.214462][ T335] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.214716][  T335] RIP: 0033:0x7f0812c447b7
[ 36.214913][ T335] 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)
[   36.215668][  T335] RSP: 002b:00007ffc9872ddd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.216065][  T335] RAX: ffffffffffffffda RBX: 00007ffc9872e500 RCX: 00007f0812c447b7
[   36.216344][  T335] RDX: 0000000000000000 RSI: 00007ffc9872de40 RDI: 0000000000000005
[   36.216622][  T335] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.217038][  T335] R10: 0000000022f7a910 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