======================================
| [ 36.302674][ T337] #0: ffffffff937bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.303012][ T337] #1: ffff8880066a2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.303417][  T337]
| [   36.303417][  T337] stack backtrace:
[   36.303939][  T337] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.304351][  T337] Call Trace:
[   36.304498][  T337]  <TASK>
[ 36.304596][ T337] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.304789][ T337] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.304977][ T337] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.305240][ T337] 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
[ 36.305498][ T337] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.305683][ T337] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.305874][ T337] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.306086][ T337] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.306358][ T337] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.306580][ T337] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.306845][ T337] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.307057][ T337] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.307319][ T337] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.307617][ T337] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.307917][ T337] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.308218][ T337] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.308529][ T337] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.308833][ T337] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.309120][ T337] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.309433][ T337] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.309807][ T337] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.310146][ T337] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.310455][ T337] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.310769][ T337] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.311082][ T337] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.311341][ T337] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.312137][ T337] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.312485][ T337] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.312800][ T337] ? 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) 
[ 36.313131][ T337] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.313446][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.313834][ T337] ? __create_object (mm/kmemleak.c:751) 
[ 36.314141][ T337] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.314472][ T337] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.314703][ T337] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.315007][ T337] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.315316][ T337] ? 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) 
[ 36.315628][ T337] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.315878][ T337] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.316191][ T337] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.316487][ T337] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.316801][ T337] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.317148][ T337] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.317468][ T337] ? 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) 
[ 36.317778][ T337] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.318096][ T337] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.318394][ T337] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.318712][ T337] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.319030][ T337] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.319346][ T337] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.319674][ T337] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.320000][ T337] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.320305][ T337] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.320602][ T337] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.320982][ T337] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.321321][ T337] ___sys_sendmsg (net/socket.c:2653) 
[ 36.321626][ T337] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.321937][ T337] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.322250][ T337] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.322562][ T337] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.322928][ T337] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.323267][ T337] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.323594][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.323973][ T337] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.324279][ T337] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.324592][ T337] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.324892][ T337] ? __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) 
[ 36.325242][ T337] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.325550][ T337] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.325920][  T337] RIP: 0033:0x7fc2409d47b7
[ 36.326207][ T337] 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)
[   36.327178][  T337] RSP: 002b:00007ffc1a906a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.327604][  T337] RAX: ffffffffffffffda RBX: 00007ffc1a907190 RCX: 00007fc2409d47b7
[   36.328023][  T337] RDX: 0000000000000000 RSI: 00007ffc1a906ad0 RDI: 0000000000000005
[   36.328449][  T337] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.328872][  T337] R10: 000000000676c910 R11: 0000000000000246 R12: 0000000000000004
[   36.329293][  T337] R13: 0000000066bea6d0 R14: 0000000000496600 R15: 0000000000000000
| [ 36.333086][ T337] #0: ffffffff937bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.333663][ T337] #1: ffff8880066a2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.334264][  T337]
| [   36.334264][  T337] stack backtrace:
[   36.335116][  T337] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.335800][  T337] Call Trace:
[   36.336035][  T337]  <TASK>
[ 36.336196][ T337] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.336501][ T337] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.336815][ T337] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.337252][ T337] 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
[ 36.337687][ T337] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.337981][ T337] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.338305][ T337] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.338678][ T337] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.339078][ T337] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.339459][ T337] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.339888][ T337] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.340238][ T337] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.340609][ T337] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.340926][ T337] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.341250][ T337] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.341563][ T337] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.341859][ T337] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.342168][ T337] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.342478][ T337] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.342789][ T337] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.343165][ T337] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.343490][ T337] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.343810][ T337] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.344109][ T337] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.344421][ T337] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.344667][ T337] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.344986][ T337] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.345304][ T337] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.345635][ T337] ? 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) 
[ 36.345949][ T337] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.346272][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.346657][ T337] ? __create_object (mm/kmemleak.c:751) 
[ 36.346978][ T337] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.347303][ T337] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.347534][ T337] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.348129][ T337] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.348435][ T337] ? 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) 
[ 36.348739][ T337] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.348976][ T337] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.349300][ T337] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.349853][ T337] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.350148][ T337] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.350484][ T337] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.350792][ T337] ? 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) 
[ 36.351104][ T337] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.351420][ T337] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.351729][ T337] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.352037][ T337] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.352364][ T337] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.352672][ T337] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.352966][ T337] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.353294][ T337] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.353792][ T337] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.354043][ T337] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.354404][ T337] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.354758][ T337] ___sys_sendmsg (net/socket.c:2653) 
[ 36.355276][ T337] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.355588][ T337] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.355862][ T337] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.356111][ T337] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.356660][ T337] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.356947][ T337] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.357257][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.357623][ T337] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.357920][ T337] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.358214][ T337] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.358502][ T337] ? __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) 
[ 36.358825][ T337] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.359112][ T337] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.359465][  T337] RIP: 0033:0x7fc2409d47b7
[ 36.359769][ T337] 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)
[   36.360935][  T337] RSP: 002b:00007ffc1a906a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.361361][  T337] RAX: ffffffffffffffda RBX: 00007ffc1a907190 RCX: 00007fc2409d47b7
[   36.361784][  T337] RDX: 0000000000000000 RSI: 00007ffc1a906ad0 RDI: 0000000000000005
[   36.362210][  T337] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.362677][  T337] R10: 000000000676c910 R11: 0000000000000246 R12: 0000000000000004
[   36.363348][  T337] R13: 0000000066bea6d0 R14: 0000000000496600 R15: 0000000000000000
| [ 36.367658][ T337] #0: ffffffff937bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.368210][ T337] #1: ffff8880066a2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.368797][  T337]
| [   36.368797][  T337] stack backtrace:
[   36.369606][  T337] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.370243][  T337] Call Trace:
[   36.370488][  T337]  <TASK>
[ 36.370658][ T337] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.370979][ T337] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.371294][ T337] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.371948][ T337] 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
[ 36.372361][ T337] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.372656][ T337] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.372915][ T337] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.373465][ T337] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.373860][ T337] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.374226][ T337] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.374668][ T337] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.375230][ T337] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.375605][ T337] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.375920][ T337] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.376244][ T337] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.376562][ T337] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.376868][ T337] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.377185][ T337] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.377478][ T337] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.377803][ T337] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.378146][ T337] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.378481][ T337] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.378762][ T337] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.379247][ T337] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.379560][ T337] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.379796][ T337] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.380094][ T337] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.380424][ T337] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.380934][ T337] ? 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) 
[ 36.381213][ T337] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.381530][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.381916][ T337] ? __create_object (mm/kmemleak.c:751) 
[ 36.382420][ T337] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.382738][ T337] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.382984][ T337] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.383291][ T337] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.383784][ T337] ? 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) 
[ 36.384078][ T337] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.384321][ T337] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.384634][ T337] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.384944][ T337] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.385458][ T337] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.385785][ T337] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.386081][ T337] ? 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) 
[ 36.386407][ T337] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.387149][ T337] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.387463][ T337] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.387780][ T337] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.388088][ T337] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.388547][ T337] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.388830][ T337] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.389108][ T337] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.389421][ T337] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.389716][ T337] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.390081][ T337] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.390415][ T337] ___sys_sendmsg (net/socket.c:2653) 
[ 36.390731][ T337] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.391038][ T337] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.391346][ T337] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.391639][ T337] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.392038][ T337] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.392358][ T337] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.392864][ T337] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.393231][ T337] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.393544][ T337] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.393850][ T337] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.394148][ T337] ? __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) 
[ 36.394499][ T337] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.394813][ T337] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.395194][  T337] RIP: 0033:0x7fc2409d47b7
[ 36.395498][ T337] 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)
[   36.396628][  T337] RSP: 002b:00007ffc1a906a68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.397070][  T337] RAX: ffffffffffffffda RBX: 00007ffc1a907190 RCX: 00007fc2409d47b7
[   36.397422][  T337] RDX: 0000000000000000 RSI: 00007ffc1a906ad0 RDI: 0000000000000005
[   36.397694][  T337] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.397977][  T337] R10: 000000000676c910 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