======================================
| [ 36.825999][ T341] #0: ffffffff969bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.826348][ T341] #1: ffff8880077b2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.826769][  T341]
| [   36.826769][  T341] stack backtrace:
[   36.827285][  T341] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.827695][  T341] Call Trace:
[   36.827848][  T341]  <TASK>
[ 36.827947][ T341] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.828146][ T341] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.828333][ T341] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.828598][ T341] 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
[ 36.828865][ T341] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.829050][ T341] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.829242][ T341] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.829462][ T341] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.829700][ T341] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.829919][ T341] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.830187][ T341] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.830405][ T341] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.830631][ T341] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.830823][ T341] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.831012][ T341] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.831201][ T341] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.831388][ T341] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.831584][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.831770][ T341] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.831955][ T341] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.832188][ T341] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.832386][ T341] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.832579][ T341] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.832765][ T341] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.832954][ T341] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.833099][ T341] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.833290][ T341] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.833488][ T341] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.833698][ T341] ? 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) 
[ 36.833889][ T341] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.834082][ T341] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.834325][ T341] ? __create_object (mm/kmemleak.c:751) 
[ 36.834517][ T341] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.834712][ T341] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.834855][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.835044][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.835232][ T341] ? 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) 
[ 36.835416][ T341] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.835563][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.835760][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.835948][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.836137][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.836341][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.836527][ T341] ? 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) 
[ 36.836719][ T341] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.836913][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.837100][ T341] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.837300][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.837493][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.837680][ T341] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.837872][ T341] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.838066][ T341] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.838258][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.838446][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.838677][ T341] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.838882][ T341] ___sys_sendmsg (net/socket.c:2653) 
[ 36.839077][ T341] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.839270][ T341] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.839459][ T341] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.839643][ T341] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.839876][ T341] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.840067][ T341] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.840266][ T341] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.840503][ T341] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.840698][ T341] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.840887][ T341] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.841072][ T341] ? __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) 
[ 36.841281][ T341] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.841471][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.841704][  T341] RIP: 0033:0x7f0c40b7e7b7
[ 36.841897][ T341] 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)
[   36.842537][  T341] RSP: 002b:00007fff2f939288 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.842816][  T341] RAX: ffffffffffffffda RBX: 00007fff2f9399b0 RCX: 00007f0c40b7e7b7
[   36.843091][  T341] RDX: 0000000000000000 RSI: 00007fff2f9392f0 RDI: 0000000000000005
[   36.843382][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.843668][  T341] R10: 00000000190ad910 R11: 0000000000000246 R12: 0000000000000004
[   36.843943][  T341] R13: 0000000066bea4d8 R14: 0000000000496600 R15: 0000000000000000
| [ 36.846329][ T341] #0: ffffffff969bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.846675][ T341] #1: ffff8880077b2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.847041][  T341]
| [   36.847041][  T341] stack backtrace:
[   36.847550][  T341] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.847963][  T341] Call Trace:
[   36.848106][  T341]  <TASK>
[ 36.848209][ T341] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.848401][ T341] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.848585][ T341] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.848849][ T341] 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
[ 36.849114][ T341] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.849297][ T341] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.849489][ T341] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.849703][ T341] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.849937][ T341] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.850152][ T341] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.850418][ T341] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.850633][ T341] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.850866][ T341] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.851053][ T341] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.851238][ T341] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.851422][ T341] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.851607][ T341] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.851794][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.851977][ T341] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.852170][ T341] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.852400][ T341] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.852598][ T341] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.852782][ T341] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.852982][ T341] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.853172][ T341] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.853320][ T341] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.853507][ T341] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.853707][ T341] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.853908][ T341] ? 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) 
[ 36.854093][ T341] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.854283][ T341] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.854517][ T341] ? __create_object (mm/kmemleak.c:751) 
[ 36.854705][ T341] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.854897][ T341] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.855038][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.855224][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.855410][ T341] ? 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) 
[ 36.855600][ T341] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.855749][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.855934][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.856118][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.856306][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.856507][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.856691][ T341] ? 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) 
[ 36.856887][ T341] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.857080][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.857267][ T341] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.857456][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.857645][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.857826][ T341] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.858016][ T341] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.858211][ T341] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.858399][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.858589][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.858817][ T341] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.859012][ T341] ___sys_sendmsg (net/socket.c:2653) 
[ 36.859200][ T341] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.859384][ T341] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.859578][ T341] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.859759][ T341] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.859992][ T341] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.860178][ T341] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.860371][ T341] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.860603][ T341] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.860799][ T341] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.860982][ T341] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.861169][ T341] ? __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) 
[ 36.861375][ T341] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.861566][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.861795][  T341] RIP: 0033:0x7f0c40b7e7b7
[ 36.861989][ T341] 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)
[   36.862621][  T341] RSP: 002b:00007fff2f939288 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.862929][  T341] RAX: ffffffffffffffda RBX: 00007fff2f9399b0 RCX: 00007f0c40b7e7b7
[   36.863204][  T341] RDX: 0000000000000000 RSI: 00007fff2f9392f0 RDI: 0000000000000005
[   36.863480][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.863940][  T341] R10: 00000000190ad910 R11: 0000000000000246 R12: 0000000000000004
[   36.864212][  T341] R13: 0000000066bea4d8 R14: 0000000000496600 R15: 0000000000000000
| [ 36.866958][ T341] #0: ffffffff969bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [ 36.867299][ T341] #1: ffff8880077b2c58 (&br->lock){+...}-{2:2}, at: br_add_if (net/bridge/br_if.c:683) bridge
| [   36.867669][  T341]
| [   36.867669][  T341] stack backtrace:
[   36.868293][  T341] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   36.868701][  T341] Call Trace:
[   36.868842][  T341]  <TASK>
[ 36.868940][ T341] dump_stack_lvl (lib/dump_stack.c:122) 
[ 36.869241][ T341] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 36.869433][ T341] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 36.869699][ T341] 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
[ 36.869958][ T341] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.870260][ T341] ? __timer_delete (./include/linux/list.h:971 ./include/linux/timer.h:147 kernel/time/timer.c:1426) 
[ 36.870452][ T341] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 36.870666][ T341] ? mn_hlist_invalidate_range_start (mm/mmu_notifier.c:485 (discriminator 4)) 
[ 36.870899][ T341] br_make_forwarding (net/bridge/br_stp.c:465) bridge
[ 36.871232][ T341] br_port_state_selection (net/bridge/br_stp.c:495) bridge
[ 36.871496][ T341] br_stp_enable_port (net/bridge/br_stp_if.c:95) bridge
[ 36.871714][ T341] br_add_if (net/bridge/br_if.c:687) bridge
[ 36.871939][ T341] do_setlink (net/core/rtnetlink.c:2907) 
[ 36.872235][ T341] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 36.872422][ T341] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 36.872606][ T341] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 36.872791][ T341] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 36.873209][ T341] ? __kernel_text_address (kernel/extable.c:79) 
[ 36.873399][ T341] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 36.873583][ T341] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 36.873820][ T341] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 36.874130][ T341] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 36.874315][ T341] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 36.874499][ T341] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 36.874687][ T341] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.874839][ T341] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 36.875139][ T341] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 36.875333][ T341] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 36.875524][ T341] ? 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) 
[ 36.875710][ T341] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 36.876011][ T341] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.876247][ T341] ? __create_object (mm/kmemleak.c:751) 
[ 36.876433][ T341] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 36.876629][ T341] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 36.876883][ T341] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 36.877071][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.877254][ T341] ? 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) 
[ 36.877440][ T341] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 36.877586][ T341] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 36.877890][ T341] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 36.878080][ T341] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 36.878266][ T341] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 36.878472][ T341] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 36.878768][ T341] ? 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) 
[ 36.878960][ T341] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 36.879148][ T341] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 36.879335][ T341] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.879634][ T341] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 36.879827][ T341] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 36.880014][ T341] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 36.880205][ T341] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 36.880512][ T341] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 36.880700][ T341] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 36.880883][ T341] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 36.881111][ T341] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 36.881308][ T341] ___sys_sendmsg (net/socket.c:2653) 
[ 36.881495][ T341] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 36.881689][ T341] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 36.881879][ T341] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 36.882061][ T341] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 36.882400][ T341] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 36.882596][ T341] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 36.882787][ T341] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 36.883130][ T341] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 36.883323][ T341] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 36.883513][ T341] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 36.883704][ T341] ? __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) 
[ 36.883911][ T341] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 36.884209][ T341] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   36.884658][  T341] RIP: 0033:0x7f0c40b7e7b7
[ 36.884847][ T341] 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)
[   36.885597][  T341] RSP: 002b:00007fff2f939288 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   36.885874][  T341] RAX: ffffffffffffffda RBX: 00007fff2f9399b0 RCX: 00007f0c40b7e7b7
[   36.886267][  T341] RDX: 0000000000000000 RSI: 00007fff2f9392f0 RDI: 0000000000000005
[   36.886538][  T341] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   36.886814][  T341] R10: 00000000190ad910 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