======================================
| [ 44.536781][ T339] #0: ffffffffa2fbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 44.537408][ T339] #1: ffff8880052b2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   44.538088][  T339]
| [   44.538088][  T339] stack backtrace:
[   44.539012][  T339] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   44.539728][  T339] Call Trace:
[   44.539983][  T339]  <TASK>
[ 44.540153][ T339] dump_stack_lvl (lib/dump_stack.c:122) 
[ 44.540492][ T339] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 44.540816][ T339] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 44.541291][ T339] 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
[ 44.541742][ T339] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 44.542065][ T339] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 44.542397][ T339] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 44.542808][ T339] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 44.543215][ T339] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 44.543578][ T339] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 44.544041][ T339] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 44.544399][ T339] br_add_if (net/bridge/br_if.c:687) bridge
[ 44.544795][ T339] do_setlink (net/core/rtnetlink.c:2907) 
[ 44.545120][ T339] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 44.545441][ T339] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 44.545748][ T339] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 44.546065][ T339] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 44.546391][ T339] ? __kernel_text_address (kernel/extable.c:79) 
[ 44.546713][ T339] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 44.547030][ T339] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 44.547430][ T339] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 44.547800][ T339] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 44.548162][ T339] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 44.548481][ T339] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 44.548804][ T339] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 44.549066][ T339] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 44.549363][ T339] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 44.549673][ T339] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 44.549995][ T339] ? 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) 
[ 44.550300][ T339] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 44.550627][ T339] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 44.551035][ T339] ? __create_object (mm/kmemleak.c:751) 
[ 44.551366][ T339] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 44.551681][ T339] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 44.551921][ T339] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 44.552236][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 44.552545][ T339] ? 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) 
[ 44.552846][ T339] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 44.553075][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 44.553393][ T339] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 44.553718][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 44.554034][ T339] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 44.554383][ T339] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 44.554724][ T339] ? 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) 
[ 44.555063][ T339] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 44.555378][ T339] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 44.555731][ T339] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 44.556073][ T339] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 44.556404][ T339] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 44.556758][ T339] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 44.557107][ T339] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 44.557421][ T339] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 44.557745][ T339] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 44.558068][ T339] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 44.558506][ T339] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 44.558877][ T339] ___sys_sendmsg (net/socket.c:2653) 
[ 44.559256][ T339] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 44.559605][ T339] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 44.559954][ T339] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 44.560278][ T339] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 44.560692][ T339] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 44.561048][ T339] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 44.561391][ T339] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 44.561791][ T339] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 44.562127][ T339] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 44.562466][ T339] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 44.562787][ T339] ? __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) 
[ 44.563159][ T339] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.563496][ T339] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   44.563884][  T339] RIP: 0033:0x7fab81aa37b7
[ 44.564224][ T339] 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)
[   44.565396][  T339] RSP: 002b:00007ffc7f3a2828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   44.565904][  T339] RAX: ffffffffffffffda RBX: 00007ffc7f3a2f50 RCX: 00007fab81aa37b7
[   44.566396][  T339] RDX: 0000000000000000 RSI: 00007ffc7f3a2890 RDI: 0000000000000005
[   44.566916][  T339] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   44.567402][  T339] R10: 0000000000c8a910 R11: 0000000000000246 R12: 0000000000000004
[   44.567934][  T339] R13: 0000000066be9ace R14: 0000000000496600 R15: 0000000000000000
| [ 44.572254][ T339] #0: ffffffffa2fbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 44.572903][ T339] #1: ffff8880052b2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   44.573565][  T339]
| [   44.573565][  T339] stack backtrace:
[   44.574489][  T339] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   44.575190][  T339] Call Trace:
[   44.575407][  T339]  <TASK>
[ 44.575578][ T339] dump_stack_lvl (lib/dump_stack.c:122) 
[ 44.575888][ T339] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 44.576225][ T339] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 44.576739][ T339] 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
[ 44.577163][ T339] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 44.577467][ T339] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 44.577800][ T339] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 44.578186][ T339] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 44.578589][ T339] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 44.578962][ T339] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 44.579437][ T339] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 44.579842][ T339] br_add_if (net/bridge/br_if.c:687) bridge
[ 44.580226][ T339] do_setlink (net/core/rtnetlink.c:2907) 
[ 44.580587][ T339] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 44.580935][ T339] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 44.581293][ T339] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 44.581621][ T339] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 44.581956][ T339] ? __kernel_text_address (kernel/extable.c:79) 
[ 44.582314][ T339] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 44.582646][ T339] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 44.583135][ T339] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 44.583542][ T339] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 44.583892][ T339] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 44.584269][ T339] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 44.584648][ T339] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 44.584954][ T339] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 44.585306][ T339] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 44.585707][ T339] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 44.586067][ T339] ? 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) 
[ 44.586460][ T339] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 44.586811][ T339] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 44.587238][ T339] ? __create_object (mm/kmemleak.c:751) 
[ 44.587584][ T339] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 44.587911][ T339] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 44.588221][ T339] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 44.588579][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 44.588904][ T339] ? 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) 
[ 44.589224][ T339] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 44.589481][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 44.589831][ T339] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 44.590166][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 44.590489][ T339] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 44.590860][ T339] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 44.591204][ T339] ? 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) 
[ 44.591567][ T339] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 44.591912][ T339] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 44.592250][ T339] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 44.592594][ T339] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 44.592937][ T339] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 44.593267][ T339] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 44.593630][ T339] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 44.593969][ T339] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 44.594326][ T339] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 44.594669][ T339] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 44.595076][ T339] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 44.595452][ T339] ___sys_sendmsg (net/socket.c:2653) 
[ 44.595788][ T339] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 44.596126][ T339] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 44.596465][ T339] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 44.596793][ T339] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 44.597245][ T339] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 44.597585][ T339] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 44.597932][ T339] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 44.598361][ T339] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 44.598701][ T339] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 44.599059][ T339] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 44.599422][ T339] ? __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) 
[ 44.599803][ T339] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.600141][ T339] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   44.600558][  T339] RIP: 0033:0x7fab81aa37b7
[ 44.600900][ T339] 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)
[   44.602004][  T339] RSP: 002b:00007ffc7f3a2828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   44.602495][  T339] RAX: ffffffffffffffda RBX: 00007ffc7f3a2f50 RCX: 00007fab81aa37b7
[   44.602957][  T339] RDX: 0000000000000000 RSI: 00007ffc7f3a2890 RDI: 0000000000000005
[   44.603505][  T339] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   44.604024][  T339] R10: 0000000000c8a910 R11: 0000000000000246 R12: 0000000000000004
[   44.604516][  T339] R13: 0000000066be9ace R14: 0000000000496600 R15: 0000000000000000
| [ 44.608848][ T339] #0: ffffffffa2fbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 44.609771][ T339] #1: ffff8880052b2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   44.610465][  T339]
| [   44.610465][  T339] stack backtrace:
[   44.611275][  T339] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   44.611912][  T339] Call Trace:
[   44.612361][  T339]  <TASK>
[ 44.612525][ T339] dump_stack_lvl (lib/dump_stack.c:122) 
[ 44.612837][ T339] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 44.613149][ T339] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 44.613602][ T339] 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
[ 44.614063][ T339] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 44.614386][ T339] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 44.614717][ T339] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 44.615086][ T339] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 44.615694][ T339] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 44.616103][ T339] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 44.616566][ T339] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 44.616962][ T339] br_add_if (net/bridge/br_if.c:687) bridge
[ 44.617383][ T339] do_setlink (net/core/rtnetlink.c:2907) 
[ 44.617715][ T339] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 44.618044][ T339] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 44.618399][ T339] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 44.618935][ T339] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 44.619273][ T339] ? __kernel_text_address (kernel/extable.c:79) 
[ 44.619611][ T339] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 44.619943][ T339] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 44.620558][ T339] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 44.620900][ T339] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 44.621214][ T339] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 44.621543][ T339] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 44.622137][ T339] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 44.622387][ T339] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 44.622713][ T339] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 44.623076][ T339] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 44.623419][ T339] ? 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) 
[ 44.623951][ T339] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 44.624278][ T339] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 44.624728][ T339] ? __create_object (mm/kmemleak.c:751) 
[ 44.625091][ T339] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 44.625670][ T339] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 44.625926][ T339] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 44.626267][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 44.626582][ T339] ? 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) 
[ 44.626913][ T339] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 44.627164][ T339] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 44.627485][ T339] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 44.627822][ T339] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 44.628150][ T339] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 44.628707][ T339] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 44.629006][ T339] ? 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) 
[ 44.629306][ T339] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 44.629595][ T339] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 44.629911][ T339] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 44.630242][ T339] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 44.630564][ T339] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 44.630871][ T339] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 44.631391][ T339] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 44.631744][ T339] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 44.632081][ T339] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 44.632396][ T339] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 44.632791][ T339] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 44.633131][ T339] ___sys_sendmsg (net/socket.c:2653) 
[ 44.633449][ T339] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 44.633767][ T339] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 44.634285][ T339] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 44.634609][ T339] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 44.635001][ T339] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 44.635324][ T339] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 44.635848][ T339] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 44.636274][ T339] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 44.636644][ T339] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 44.636965][ T339] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 44.637483][ T339] ? __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) 
[ 44.637848][ T339] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 44.638205][ T339] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   44.638593][  T339] RIP: 0033:0x7fab81aa37b7
[ 44.638916][ T339] 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)
[   44.639980][  T339] RSP: 002b:00007ffc7f3a2828 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   44.640686][  T339] RAX: ffffffffffffffda RBX: 00007ffc7f3a2f50 RCX: 00007fab81aa37b7
[   44.641161][  T339] RDX: 0000000000000000 RSI: 00007ffc7f3a2890 RDI: 0000000000000005
[   44.641631][  T339] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   44.642139][  T339] R10: 0000000000c8a910 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