======================================
| [ 37.012575][ T338] #0: ffffffff9efbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 37.012926][ T338] #1: ffff8880090f2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   37.013319][  T338]
| [   37.013319][  T338] stack backtrace:
[   37.013829][  T338] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   37.014252][  T338] Call Trace:
[   37.014407][  T338]  <TASK>
[ 37.014508][ T338] dump_stack_lvl (lib/dump_stack.c:122) 
[ 37.014704][ T338] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 37.014896][ T338] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 37.015162][ 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
[ 37.015425][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 37.015623][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 37.015817][ T338] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 37.016031][ T338] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 37.016277][ T338] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 37.016495][ T338] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 37.016767][ T338] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 37.016984][ T338] br_add_if (net/bridge/br_if.c:687) bridge
[ 37.017222][ T338] do_setlink (net/core/rtnetlink.c:2907) 
[ 37.017420][ T338] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 37.017613][ T338] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 37.017803][ T338] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 37.017997][ T338] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 37.018189][ T338] ? __kernel_text_address (kernel/extable.c:79) 
[ 37.018387][ T338] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 37.018574][ T338] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 37.018872][ T338] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 37.019095][ T338] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 37.019301][ T338] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 37.019500][ T338] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 37.019695][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 37.019841][ T338] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 37.020036][ T338] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 37.020247][ T338] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 37.020445][ 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) 
[ 37.020638][ T338] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 37.020834][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 37.021066][ T338] ? __create_object (mm/kmemleak.c:751) 
[ 37.021266][ T338] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 37.021468][ T338] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 37.021612][ T338] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 37.021810][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 37.022010][ 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) 
[ 37.022218][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 37.022374][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 37.022574][ T338] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 37.022763][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 37.022953][ T338] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 37.023158][ T338] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 37.023364][ 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) 
[ 37.023555][ T338] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 37.023749][ T338] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 37.023941][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 37.024149][ T338] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 37.024353][ T338] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 37.024544][ T338] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 37.024738][ T338] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 37.024934][ T338] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 37.025127][ T338] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 37.025314][ T338] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 37.025549][ T338] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 37.025753][ T338] ___sys_sendmsg (net/socket.c:2653) 
[ 37.025949][ T338] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 37.026145][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 37.026342][ T338] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 37.026531][ T338] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 37.026779][ T338] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 37.027178][ T338] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 37.027381][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 37.027651][ T338] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 37.027889][ T338] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 37.028093][ T338] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 37.028435][ 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) 
[ 37.028652][ T338] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 37.028841][ T338] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   37.029077][  T338] RIP: 0033:0x7f492adf27b7
[ 37.029268][ 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)
[   37.029903][  T338] RSP: 002b:00007fff557d93e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   37.030298][  T338] RAX: ffffffffffffffda RBX: 00007fff557d9b10 RCX: 00007f492adf27b7
[   37.030581][  T338] RDX: 0000000000000000 RSI: 00007fff557d9450 RDI: 0000000000000005
[   37.030860][  T338] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   37.031256][  T338] R10: 0000000023d77910 R11: 0000000000000246 R12: 0000000000000004
[   37.031644][  T338] R13: 0000000066bea102 R14: 0000000000496600 R15: 0000000000000000
| [ 37.034684][ T338] #0: ffffffff9efbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 37.035075][ T338] #1: ffff8880090f2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   37.035616][  T338]
| [   37.035616][  T338] stack backtrace:
[   37.036269][  T338] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   37.036879][  T338] Call Trace:
[   37.037078][  T338]  <TASK>
[ 37.037176][ T338] dump_stack_lvl (lib/dump_stack.c:122) 
[ 37.037384][ T338] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 37.037721][ T338] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 37.038027][ 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
[ 37.038304][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 37.038614][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 37.038804][ T338] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 37.039024][ T338] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 37.039263][ T338] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 37.039615][ T338] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 37.039899][ T338] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 37.040128][ T338] br_add_if (net/bridge/br_if.c:687) bridge
[ 37.040392][ T338] do_setlink (net/core/rtnetlink.c:2907) 
[ 37.040735][ T338] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 37.040930][ T338] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 37.041140][ T338] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 37.041337][ T338] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 37.041543][ T338] ? __kernel_text_address (kernel/extable.c:79) 
[ 37.041850][ T338] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 37.042092][ T338] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 37.042388][ T338] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 37.042620][ T338] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 37.042818][ T338] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 37.043033][ T338] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 37.043386][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 37.043539][ T338] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 37.043990][ T338] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 37.044219][ T338] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 37.044602][ 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) 
[ 37.044794][ T338] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 37.045003][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 37.045262][ T338] ? __create_object (mm/kmemleak.c:751) 
[ 37.045580][ T338] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 37.045902][ T338] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 37.046075][ T338] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 37.046381][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 37.046689][ 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) 
[ 37.046874][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 37.047168][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 37.047504][ T338] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 37.047691][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 37.048021][ T338] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 37.048363][ T338] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 37.048692][ 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) 
[ 37.048912][ T338] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 37.049101][ T338] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 37.049313][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 37.049521][ T338] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 37.049856][ T338] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 37.050054][ T338] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 37.050276][ T338] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 37.050495][ T338] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 37.050826][ T338] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 37.051039][ T338] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 37.051338][ T338] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 37.051567][ T338] ___sys_sendmsg (net/socket.c:2653) 
[ 37.051888][ T338] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 37.052085][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 37.052360][ T338] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 37.052581][ T338] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 37.052955][ T338] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 37.053163][ T338] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 37.053380][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 37.053637][ T338] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 37.053980][ T338] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 37.054167][ T338] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 37.054356][ 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) 
[ 37.054565][ T338] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 37.054905][ T338] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   37.055163][  T338] RIP: 0033:0x7f492adf27b7
[ 37.055386][ 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)
[   37.056280][  T338] RSP: 002b:00007fff557d93e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   37.056730][  T338] RAX: ffffffffffffffda RBX: 00007fff557d9b10 RCX: 00007f492adf27b7
[   37.057051][  T338] RDX: 0000000000000000 RSI: 00007fff557d9450 RDI: 0000000000000005
[   37.057552][  T338] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   37.057875][  T338] R10: 0000000023d77910 R11: 0000000000000246 R12: 0000000000000004
[   37.058165][  T338] R13: 0000000066bea102 R14: 0000000000496600 R15: 0000000000000000
| [ 37.061026][ T338] #0: ffffffff9efbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 37.061429][ T338] #1: ffff8880090f2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   37.061844][  T338]
| [   37.061844][  T338] stack backtrace:
[   37.062496][  T338] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   37.063136][  T338] Call Trace:
[   37.063282][  T338]  <TASK>
[ 37.063381][ T338] dump_stack_lvl (lib/dump_stack.c:122) 
[ 37.063695][ T338] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 37.063884][ T338] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 37.064158][ 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
[ 37.064539][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 37.064726][ T338] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 37.064918][ T338] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 37.065132][ T338] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 37.065368][ T338] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 37.065585][ T338] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 37.065855][ T338] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 37.066074][ T338] br_add_if (net/bridge/br_if.c:687) bridge
[ 37.066307][ T338] do_setlink (net/core/rtnetlink.c:2907) 
[ 37.066495][ T338] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 37.066685][ T338] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 37.066985][ T338] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 37.067174][ T338] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 37.067362][ T338] ? __kernel_text_address (kernel/extable.c:79) 
[ 37.067549][ T338] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 37.067846][ T338] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 37.068079][ T338] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 37.068279][ T338] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 37.068475][ T338] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 37.068771][ T338] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 37.068961][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 37.069107][ T338] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 37.069298][ T338] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 37.069601][ T338] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 37.069797][ 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) 
[ 37.069985][ T338] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 37.070178][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 37.070419][ T338] ? __create_object (mm/kmemleak.c:751) 
[ 37.070613][ T338] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 37.070806][ T338] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 37.070947][ T338] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 37.071136][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 37.071450][ 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) 
[ 37.071638][ T338] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 37.071784][ T338] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 37.071977][ T338] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 37.072165][ T338] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 37.072370][ T338] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 37.072573][ T338] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 37.072763][ 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) 
[ 37.072953][ T338] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 37.073142][ T338] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 37.073346][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 37.073553][ T338] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 37.073771][ T338] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 37.074090][ T338] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 37.074280][ T338] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 37.074474][ T338] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 37.074664][ T338] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 37.074960][ T338] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 37.075219][ T338] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 37.075418][ T338] ___sys_sendmsg (net/socket.c:2653) 
[ 37.075643][ T338] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 37.075970][ T338] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 37.076159][ T338] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 37.076355][ T338] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 37.076616][ T338] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 37.076948][ T338] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 37.077145][ T338] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 37.077439][ T338] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 37.077639][ T338] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 37.077955][ T338] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 37.078175][ 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) 
[ 37.078385][ T338] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 37.078575][ T338] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   37.078919][  T338] RIP: 0033:0x7f492adf27b7
[ 37.079112][ 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)
[   37.079862][  T338] RSP: 002b:00007fff557d93e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   37.080164][  T338] RAX: ffffffffffffffda RBX: 00007fff557d9b10 RCX: 00007f492adf27b7
[   37.080465][  T338] RDX: 0000000000000000 RSI: 00007fff557d9450 RDI: 0000000000000005
[   37.080877][  T338] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   37.081171][  T338] R10: 0000000023d77910 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