======================================
| [ 36.388698][ T338] #0: ffffffff9cbbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.389046][ T338] #1: ffff888006272c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.389442][  T338]
| [   36.389442][  T338] stack backtrace:
[   36.389954][  T338] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.390367][  T338] Call Trace:
[   36.390514][  T338]  <TASK>
[ 36.390620][ T338] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.390825][ T338] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.391028][ T338] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.391296][ 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
[ 36.391561][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.391755][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.391948][ T338] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.392165][ T338] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.392407][ T338] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.392638][ T338] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.392915][ T338] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.393130][ T338] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.393362][ T338] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.393553][ T338] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.393743][ T338] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.393930][ T338] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.394120][ T338] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.394312][ T338] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.394503][ T338] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.394694][ T338] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.394937][ T338] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.395147][ T338] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.395337][ T338] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.395531][ T338] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.395726][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.395871][ T338] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.396077][ T338] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.396271][ T338] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.396471][ 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) 
[ 36.396667][ T338] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.396880][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.397131][ T338] ? __create_object (mm/kmemleak.c:751) 
[ 36.397323][ T338] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.397523][ T338] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.397670][ T338] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.397859][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.398046][ 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) 
[ 36.398265][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.398414][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.398613][ T338] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.398802][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.398991][ T338] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.399196][ T338] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.399385][ 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) 
[ 36.399574][ T338] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.399767][ T338] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.399955][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.400150][ T338] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.400345][ T338] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.400534][ T338] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.400725][ T338] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.400919][ T338] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.401109][ T338] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.401293][ T338] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.401525][ T338] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.401726][ T338] ___sys_sendmsg (net/socket.c:2653) 
[ 36.401918][ T338] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.402106][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.402294][ T338] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.402489][ T338] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.402724][ T338] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.402923][ T338] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.403118][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.403355][ T338] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.403557][ T338] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.403744][ T338] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.403937][ 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) 
[ 36.404148][ T338] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.404347][ T338] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.404582][  T338] RIP: 0033:0x7fb11625a7b7
[ 36.404775][ 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)
[   36.405415][  T338] RSP: 002b:00007fff1d132838 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.405695][  T338] RAX: ffffffffffffffda RBX: 00007fff1d132f60 RCX: 00007fb11625a7b7
[   36.405982][  T338] RDX: 0000000000000000 RSI: 00007fff1d1328a0 RDI: 0000000000000005
[   36.406261][  T338] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.406537][  T338] R10: 000000000ea29910 R11: 0000000000000246 R12: 0000000000000004
[   36.406819][  T338] R13: 0000000066bea698 R14: 0000000000496600 R15: 0000000000000000
| [ 36.409225][ T338] #0: ffffffff9cbbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.409574][ T338] #1: ffff888006272c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.409943][  T338]
| [   36.409943][  T338] stack backtrace:
[   36.410475][  T338] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.410884][  T338] Call Trace:
[   36.411031][  T338]  <TASK>
[ 36.411129][ T338] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.411321][ T338] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.411517][ T338] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.411786][ 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
[ 36.412049][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.412237][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.412430][ T338] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.412645][ T338] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.412887][ T338] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.413110][ T338] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.413387][ T338] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.413604][ T338] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.413834][ T338] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.414021][ T338] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.414211][ T338] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.414574][ T338] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.414766][ T338] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.414955][ T338] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.415143][ T338] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.415333][ T338] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.415566][ T338] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.415890][ T338] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.416080][ T338] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.416272][ T338] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.416480][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.416632][ T338] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.416823][ T338] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.417140][ T338] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.417340][ 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) 
[ 36.417529][ T338] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.417724][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.418073][ T338] ? __create_object (mm/kmemleak.c:751) 
[ 36.418273][ T338] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.418471][ T338] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.418622][ T338] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.418817][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.419125][ 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) 
[ 36.419319][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.419469][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.419661][ T338] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.419972][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.420160][ T338] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.420366][ T338] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.420551][ 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) 
[ 36.420740][ T338] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.421041][ T338] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.421229][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.421434][ T338] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.421740][ T338] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.421933][ T338] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.422123][ T338] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.422318][ T338] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.422508][ T338] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.422807][ T338] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.423039][ T338] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.423242][ T338] ___sys_sendmsg (net/socket.c:2653) 
[ 36.423437][ T338] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.423737][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.423932][ T338] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.424117][ T338] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.424352][ T338] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.424658][ T338] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.424850][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.425084][ T338] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.425279][ T338] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.425693][ T338] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.425878][ 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) 
[ 36.426086][ T338] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.426278][ T338] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.426512][  T338] RIP: 0033:0x7fb11625a7b7
[ 36.426820][ 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)
[   36.427601][  T338] RSP: 002b:00007fff1d132838 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.427882][  T338] RAX: ffffffffffffffda RBX: 00007fff1d132f60 RCX: 00007fb11625a7b7
[   36.428160][  T338] RDX: 0000000000000000 RSI: 00007fff1d1328a0 RDI: 0000000000000005
[   36.428567][  T338] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.428846][  T338] R10: 000000000ea29910 R11: 0000000000000246 R12: 0000000000000004
[   36.429123][  T338] R13: 0000000066bea698 R14: 0000000000496600 R15: 0000000000000000
| [ 36.431872][ T338] #0: ffffffff9cbbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.432345][ T338] #1: ffff888006272c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.432715][  T338]
| [   36.432715][  T338] stack backtrace:
[   36.433340][  T338] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.433749][  T338] Call Trace:
[   36.434009][  T338]  <TASK>
[ 36.434110][ T338] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.434307][ T338] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.434504][ T338] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.434775][ 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
[ 36.435186][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.435381][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.435576][ T338] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.435801][ T338] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.436273][ T338] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.436496][ T338] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.436764][ T338] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.437003][ T338] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.437352][ T338] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.437545][ T338] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.437736][ T338] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.437928][ T338] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.438115][ T338] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.438318][ T338] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.438504][ T338] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.438698][ T338] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.439045][ T338] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.439250][ T338] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.439435][ T338] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.439628][ T338] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.439932][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.440080][ T338] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.440275][ T338] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.440470][ T338] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.440670][ 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) 
[ 36.440976][ T338] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.441176][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.441419][ T338] ? __create_object (mm/kmemleak.c:751) 
[ 36.441615][ T338] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.441922][ T338] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.442067][ T338] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.442264][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.442452][ 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) 
[ 36.442869][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.443014][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.443206][ T338] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.443398][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.443602][ T338] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.443926][ T338] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.444116][ 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) 
[ 36.444305][ T338] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.444503][ T338] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.444816][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.445009][ T338] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.445204][ T338] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.445402][ T338] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.445713][ T338] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.445912][ T338] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.446103][ T338] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.446290][ T338] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.446634][ T338] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.446832][ T338] ___sys_sendmsg (net/socket.c:2653) 
[ 36.447033][ T338] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.447227][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.447531][ T338] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.447720][ T338] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.447954][ T338] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.448146][ T338] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.448341][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.448701][ T338] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.448901][ T338] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.449092][ T338] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.449281][ 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) 
[ 36.449493][ T338] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.449721][ T338] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.450071][  T338] RIP: 0033:0x7fb11625a7b7
[ 36.450386][ 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)
[   36.451030][  T338] RSP: 002b:00007fff1d132838 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.451312][  T338] RAX: ffffffffffffffda RBX: 00007fff1d132f60 RCX: 00007fb11625a7b7
[   36.451584][  T338] RDX: 0000000000000000 RSI: 00007fff1d1328a0 RDI: 0000000000000005
[   36.451857][  T338] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.452142][  T338] R10: 000000000ea29910 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