======================================
| [ 34.192167][ T319] #0: ffffffffa0bbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 34.192646][ T319] #1: ffff888005652c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   34.193051][  T319]
| [   34.193051][  T319] stack backtrace:
[   34.193565][  T319] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   34.193972][  T319] Call Trace:
[   34.194119][  T319]  <TASK>
[ 34.194223][ T319] dump_stack_lvl (lib/dump_stack.c:122) 
[ 34.194417][ T319] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 34.194607][ T319] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 34.194873][ T319] 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
[ 34.195136][ T319] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 34.195320][ T319] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 34.195527][ T319] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 34.195742][ T319] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 34.195978][ T319] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 34.196198][ T319] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 34.196468][ T319] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 34.196679][ T319] br_add_if (net/bridge/br_if.c:687) bridge
[ 34.196906][ T319] do_setlink (net/core/rtnetlink.c:2907) 
[ 34.197097][ T319] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 34.197286][ T319] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 34.197472][ T319] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 34.197671][ T319] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 34.197863][ T319] ? __kernel_text_address (kernel/extable.c:79) 
[ 34.198046][ T319] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 34.198230][ T319] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 34.198461][ T319] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 34.198669][ T319] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 34.198853][ T319] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 34.199110][ T319] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 34.199339][ T319] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.199508][ T319] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 34.199729][ T319] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 34.199952][ T319] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 34.200175][ T319] ? 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) 
[ 34.200396][ T319] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 34.200617][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.200884][ T319] ? __create_object (mm/kmemleak.c:751) 
[ 34.201113][ T319] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 34.201342][ T319] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 34.201506][ T319] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 34.201723][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.201938][ T319] ? 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) 
[ 34.202154][ T319] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.202322][ T319] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 34.202540][ T319] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 34.202757][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.202980][ T319] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 34.203214][ T319] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 34.203430][ T319] ? 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) 
[ 34.203646][ T319] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 34.203862][ T319] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 34.204080][ T319] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.204302][ T319] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 34.204522][ T319] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 34.204741][ T319] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 34.204962][ T319] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 34.205189][ T319] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 34.205409][ T319] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 34.205641][ T319] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 34.205915][ T319] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 34.206144][ T319] ___sys_sendmsg (net/socket.c:2653) 
[ 34.206362][ T319] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 34.206586][ T319] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.206805][ T319] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 34.207021][ T319] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 34.207293][ T319] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 34.207511][ T319] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 34.207734][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.208013][ T319] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 34.208248][ T319] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 34.208469][ T319] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 34.208685][ T319] ? __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) 
[ 34.208926][ T319] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 34.209146][ T319] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   34.209413][  T319] RIP: 0033:0x7f92c64167b7
[ 34.209638][ T319] 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)
[   34.210382][  T319] RSP: 002b:00007ffe54cb3998 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   34.210712][  T319] RAX: ffffffffffffffda RBX: 00007ffe54cb40c0 RCX: 00007f92c64167b7
[   34.211034][  T319] RDX: 0000000000000000 RSI: 00007ffe54cb3a00 RDI: 0000000000000005
[   34.211352][  T319] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   34.211682][  T319] R10: 000000000b9fd910 R11: 0000000000000246 R12: 0000000000000004
[   34.212006][  T319] R13: 0000000066bea618 R14: 0000000000496600 R15: 0000000000000000
| [ 34.214756][ T319] #0: ffffffffa0bbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 34.215145][ T319] #1: ffff888005652c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   34.215581][  T319]
| [   34.215581][  T319] stack backtrace:
[   34.216171][  T319] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   34.216579][  T319] Call Trace:
[   34.216720][  T319]  <TASK>
[ 34.216817][ T319] dump_stack_lvl (lib/dump_stack.c:122) 
[ 34.217009][ T319] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 34.217194][ T319] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 34.217465][ T319] 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
[ 34.217720][ T319] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 34.217905][ T319] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 34.218102][ T319] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 34.218314][ T319] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 34.218545][ T319] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 34.218761][ T319] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 34.219022][ T319] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 34.219235][ T319] br_add_if (net/bridge/br_if.c:687) bridge
[ 34.219457][ T319] do_setlink (net/core/rtnetlink.c:2907) 
[ 34.219647][ T319] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 34.219838][ T319] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 34.220022][ T319] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 34.220206][ T319] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 34.220393][ T319] ? __kernel_text_address (kernel/extable.c:79) 
[ 34.220574][ T319] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 34.220757][ T319] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 34.220983][ T319] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 34.221189][ T319] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 34.221372][ T319] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 34.221555][ T319] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 34.221743][ T319] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.221885][ T319] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 34.222112][ T319] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 34.222334][ T319] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 34.222562][ T319] ? 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) 
[ 34.222776][ T319] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 34.223001][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.223267][ T319] ? __create_object (mm/kmemleak.c:751) 
[ 34.223482][ T319] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 34.223702][ T319] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 34.223867][ T319] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 34.224084][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.224295][ T319] ? 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) 
[ 34.224507][ T319] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.224679][ T319] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 34.224896][ T319] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 34.225113][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.225330][ T319] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 34.225573][ T319] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 34.225791][ T319] ? 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) 
[ 34.226012][ T319] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 34.226231][ T319] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 34.226455][ T319] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.226688][ T319] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 34.226911][ T319] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 34.227126][ T319] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 34.227345][ T319] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 34.227570][ T319] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 34.227787][ T319] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 34.228003][ T319] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 34.228277][ T319] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 34.228503][ T319] ___sys_sendmsg (net/socket.c:2653) 
[ 34.228724][ T319] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 34.228942][ T319] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.229159][ T319] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 34.229373][ T319] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 34.229644][ T319] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 34.229860][ T319] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 34.230089][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.230358][ T319] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 34.230581][ T319] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 34.230794][ T319] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 34.231010][ T319] ? __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) 
[ 34.231247][ T319] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 34.231466][ T319] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   34.231735][  T319] RIP: 0033:0x7f92c64167b7
[ 34.231961][ T319] 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)
[   34.232696][  T319] RSP: 002b:00007ffe54cb3998 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   34.233026][  T319] RAX: ffffffffffffffda RBX: 00007ffe54cb40c0 RCX: 00007f92c64167b7
[   34.233531][  T319] RDX: 0000000000000000 RSI: 00007ffe54cb3a00 RDI: 0000000000000005
[   34.233852][  T319] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   34.234170][  T319] R10: 000000000b9fd910 R11: 0000000000000246 R12: 0000000000000004
[   34.234597][  T319] R13: 0000000066bea618 R14: 0000000000496600 R15: 0000000000000000
| [ 34.237814][ T319] #0: ffffffffa0bbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 34.238203][ T319] #1: ffff888005652c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   34.238736][  T319]
| [   34.238736][  T319] stack backtrace:
[   34.239327][  T319] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   34.239906][  T319] Call Trace:
[   34.240069][  T319]  <TASK>
[ 34.240184][ T319] dump_stack_lvl (lib/dump_stack.c:122) 
[ 34.240403][ T319] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 34.240615][ T319] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 34.241024][ T319] 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
[ 34.241327][ T319] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 34.241539][ T319] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 34.241757][ T319] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 34.242108][ T319] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 34.242377][ T319] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 34.242624][ T319] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 34.243043][ T319] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 34.243295][ T319] br_add_if (net/bridge/br_if.c:687) bridge
[ 34.243549][ T319] do_setlink (net/core/rtnetlink.c:2907) 
[ 34.243768][ T319] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 34.243986][ T319] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 34.244310][ T319] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 34.244523][ T319] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 34.244740][ T319] ? __kernel_text_address (kernel/extable.c:79) 
[ 34.244960][ T319] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 34.245288][ T319] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 34.245580][ T319] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 34.245810][ T319] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 34.246025][ T319] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 34.246356][ T319] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 34.246571][ T319] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.246739][ T319] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 34.246959][ T319] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 34.247298][ T319] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 34.247522][ T319] ? 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) 
[ 34.247739][ T319] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 34.247961][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.248339][ T319] ? __create_object (mm/kmemleak.c:751) 
[ 34.248558][ T319] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 34.248781][ T319] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 34.248947][ T319] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 34.249180][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.249506][ T319] ? 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) 
[ 34.249721][ T319] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 34.249890][ T319] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 34.250110][ T319] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 34.250437][ T319] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 34.250656][ T319] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 34.250889][ T319] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 34.251113][ T319] ? 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) 
[ 34.251333][ T319] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 34.251661][ T319] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 34.251879][ T319] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.252098][ T319] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 34.252315][ T319] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 34.252639][ T319] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 34.252856][ T319] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 34.253084][ T319] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 34.253300][ T319] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 34.253730][ T319] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 34.253994][ T319] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 34.254221][ T319] ___sys_sendmsg (net/socket.c:2653) 
[ 34.254437][ T319] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 34.254761][ T319] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 34.254977][ T319] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 34.255195][ T319] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 34.255465][ T319] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 34.255805][ T319] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 34.256027][ T319] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 34.256299][ T319] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 34.256520][ T319] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 34.256846][ T319] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 34.257057][ T319] ? __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) 
[ 34.257299][ T319] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 34.257515][ T319] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   34.257889][  T319] RIP: 0033:0x7f92c64167b7
[ 34.258105][ T319] 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)
[   34.258950][  T319] RSP: 002b:00007ffe54cb3998 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   34.259275][  T319] RAX: ffffffffffffffda RBX: 00007ffe54cb40c0 RCX: 00007f92c64167b7
[   34.259590][  T319] RDX: 0000000000000000 RSI: 00007ffe54cb3a00 RDI: 0000000000000005
[   34.260017][  T319] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   34.260328][  T319] R10: 000000000b9fd910 R11: 0000000000000246 R12: 0000000000000004
[   34.260657][  T319] R13: 0000000066bea618 R14: 0000000000496600 R15: 0000000000000000
| [   38.320652][  T353] 1 lock held by bridge/353:
| [ 38.320931][ T353] #0: ffffffffa0bbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   38.323118][  T353]
| [   38.323118][  T353] stack backtrace:
[   38.324736][  T353] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   38.325299][  T353] Call Trace:
[   38.325499][  T353]  <TASK>
[ 38.325641][ T353] dump_stack_lvl (lib/dump_stack.c:122) 
[ 38.325895][ T353] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 38.326158][ T353] br_get_link_af_size_filtered (net/bridge/br_private.h:1605 net/bridge/br_private.h:1602 net/bridge/br_netlink.c:110) bridge
[ 38.326529][ T353] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 38.326838][ T353] br_setlink (net/bridge/br_netlink.c:669 net/bridge/br_netlink.c:1136) bridge
[ 38.327148][ T353] ? __pfx_br_setlink (net/bridge/br_netlink.c:1085) bridge
[ 38.327464][ T353] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[ 38.327734][ T353] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 38.328010][ T353] ? 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) 
[ 38.328300][ T353] ? __mutex_trylock_common (./arch/x86/include/asm/atomic64_64.h:101 ./include/linux/atomic/atomic-arch-fallback.h:4296 ./include/linux/atomic/atomic-long.h:1482 ./include/linux/atomic/atomic-instrumented.h:4458 kernel/locking/mutex.c:129) 
[ 38.328589][ T353] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:104) 
[ 38.328935][ T353] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 38.329224][ T353] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 38.329496][ T353] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[ 38.329781][ T353] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 38.330063][ T353] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 38.330355][ T353] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 38.330643][ T353] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 38.330915][ T353] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 38.331190][ T353] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[ 38.331471][ T353] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 38.331746][ T353] rtnl_bridge_setlink (net/core/rtnetlink.c:5225) 
[ 38.332035][ T353] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 38.332326][ T353] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 38.332606][ T353] ? 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) 
[ 38.332876][ T353] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 38.333096][ T353] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 38.333383][ T353] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 38.333674][ T353] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 38.333954][ T353] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 38.334267][ T353] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 38.334552][ T353] ? 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) 
[ 38.334840][ T353] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 38.335135][ T353] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 38.335421][ T353] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 38.335727][ T353] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 38.336021][ T353] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 38.336300][ T353] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 38.336578][ T353] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 38.336865][ T353] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 38.337159][ T353] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 38.337446][ T353] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 38.337823][ T353] ___sys_sendmsg (net/socket.c:2653) 
[ 38.338113][ T353] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 38.338407][ T353] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 38.338702][ T353] ? usage_skip (kernel/locking/lockdep.c:2294 kernel/locking/lockdep.c:2262) 
[ 38.338996][ T353] ? reacquire_held_locks (kernel/locking/lockdep.c:5284) 
[ 38.339274][ T353] ? do_user_addr_fault (./include/linux/rcupdate.h:326 ./include/linux/rcupdate.h:838 ./include/linux/mm.h:713 arch/x86/mm/fault.c:1340) 
[ 38.339573][ T353] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 38.339876][ T353] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 38.340165][ T353] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 38.340453][ T353] ? __pfx___up_read (kernel/locking/rwsem.c:1339) 
[ 38.340770][ T353] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 38.341055][ T353] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   38.341401][  T353] RIP: 0033:0x7f012ce9a7b7
[ 38.341702][ T353] 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)
[   38.342670][  T353] RSP: 002b:00007ffd58545078 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   38.343104][  T353] RAX: ffffffffffffffda RBX: 000000000000ffff RCX: 00007f012ce9a7b7
[   38.343534][  T353] RDX: 0000000000000000 RSI: 00007ffd585450e0 RDI: 0000000000000005
[   38.343949][  T353] RBP: 00007ffd585451d0 R08: 0000000000000034 R09: 0000000000000000
[   38.344358][  T353] R10: 00007f012cd53708 R11: 0000000000000246 R12: 000000000000000a


Finger prints:
lockdep_rcu_suspicious:br_get_link_af_size_filtered:br_info_notify:br_setlink:rtnl_bridge_setlink
lockdep_rcu_suspicious:br_get_link_af_size_filtered:br_info_notify:br_make_forwarding:br_port_state_selection