======================================
| [   32.965378][  T306] 1 lock held by ip/306:
| [ 32.965528][ T306] #0: ffffffff9adbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   32.965858][  T306]
| [   32.965858][  T306] stack backtrace:
[   32.966331][  T306] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   32.966709][  T306] Call Trace:
[   32.966842][  T306]  <TASK>
[ 32.966935][ T306] dump_stack_lvl (lib/dump_stack.c:122) 
[ 32.967108][ T306] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 32.967276][ T306] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 32.967545][ T306] 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
[ 32.967815][ T306] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 32.968024][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.968234][ T306] br_add_if (net/bridge/br_if.c:692) bridge
[ 32.968441][ T306] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 32.968612][ T306] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 32.968825][ T306] do_setlink (net/core/rtnetlink.c:2907) 
[ 32.968996][ T306] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 32.969166][ T306] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 32.969336][ T306] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 32.969505][ T306] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 32.969678][ T306] ? __kernel_text_address (kernel/extable.c:79) 
[ 32.969844][ T306] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 32.970011][ T306] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 32.970220][ T306] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 32.970399][ T306] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 32.970566][ T306] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 32.970746][ T306] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 32.970920][ T306] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.971055][ T306] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 32.971226][ T306] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 32.971402][ T306] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 32.971578][ T306] ? 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) 
[ 32.971756][ T306] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 32.971951][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.972161][ T306] ? __create_object (mm/kmemleak.c:751) 
[ 32.972339][ T306] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 32.972512][ T306] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 32.972643][ T306] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 32.972813][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.972982][ T306] ? 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) 
[ 32.973151][ T306] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.973283][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 32.973464][ T306] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 32.973642][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.973819][ T306] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 32.974004][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 32.974174][ T306] ? 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) 
[ 32.974343][ T306] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 32.974524][ T306] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 32.974695][ T306] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.974867][ T306] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 32.975039][ T306] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 32.975211][ T306] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 32.975395][ T306] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 32.975573][ T306] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 32.975747][ T306] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 32.975942][ T306] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 32.976149][ T306] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 32.976331][ T306] ___sys_sendmsg (net/socket.c:2653) 
[ 32.976499][ T306] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 32.976681][ T306] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.976850][ T306] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 32.977013][ T306] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 32.977219][ T306] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 32.977392][ T306] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 32.977564][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.977780][ T306] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 32.977962][ T306] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 32.978133][ T306] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 32.978298][ T306] ? __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) 
[ 32.978487][ T306] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 32.978663][ T306] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   32.978880][  T306] RIP: 0033:0x7faa6a5c17b7
[ 32.979058][ T306] 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)
[   32.979641][  T306] RSP: 002b:00007ffe9a1daa28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   32.979919][  T306] RAX: ffffffffffffffda RBX: 00007ffe9a1db150 RCX: 00007faa6a5c17b7
[   32.980171][  T306] RDX: 0000000000000000 RSI: 00007ffe9a1daa90 RDI: 0000000000000005
[   32.980420][  T306] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   32.980678][  T306] R10: 0000000031236910 R11: 0000000000000246 R12: 0000000000000004
[   32.980926][  T306] R13: 0000000066bea712 R14: 0000000000496600 R15: 0000000000000000
| [   32.983061][  T306] 1 lock held by ip/306:
| [ 32.983219][ T306] #0: ffffffff9adbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   32.983534][  T306]
| [   32.983534][  T306] stack backtrace:
[   32.984050][  T306] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   32.984429][  T306] Call Trace:
[   32.984557][  T306]  <TASK>
[ 32.984651][ T306] dump_stack_lvl (lib/dump_stack.c:122) 
[ 32.984826][ T306] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 32.984994][ T306] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 32.985243][ T306] 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
[ 32.985505][ T306] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 32.985705][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.985920][ T306] br_add_if (net/bridge/br_if.c:692) bridge
[ 32.986125][ T306] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 32.986297][ T306] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 32.986508][ T306] do_setlink (net/core/rtnetlink.c:2907) 
[ 32.986682][ T306] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 32.986850][ T306] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 32.987020][ T306] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 32.987189][ T306] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 32.987371][ T306] ? __kernel_text_address (kernel/extable.c:79) 
[ 32.987537][ T306] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 32.987710][ T306] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 32.987942][ T306] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 32.988125][ T306] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 32.988296][ T306] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 32.988468][ T306] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 32.988640][ T306] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.988783][ T306] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 32.988959][ T306] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 32.989136][ T306] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 32.989314][ T306] ? 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) 
[ 32.989487][ T306] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 32.989667][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.989885][ T306] ? __create_object (mm/kmemleak.c:751) 
[ 32.990225][ T306] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 32.990407][ T306] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 32.990538][ T306] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 32.990714][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.990975][ T306] ? 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) 
[ 32.991140][ T306] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.991278][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 32.991447][ T306] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 32.991618][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.991917][ T306] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 32.992107][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 32.992275][ T306] ? 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) 
[ 32.992445][ T306] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 32.992622][ T306] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 32.992792][ T306] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.992964][ T306] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 32.993135][ T306] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 32.993497][ T306] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 32.993683][ T306] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 32.993859][ T306] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 32.994030][ T306] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 32.994200][ T306] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 32.994501][ T306] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 32.994685][ T306] ___sys_sendmsg (net/socket.c:2653) 
[ 32.994857][ T306] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 32.995031][ T306] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.995333][ T306] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 32.995504][ T306] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 32.995720][ T306] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 32.995915][ T306] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 32.996187][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.996396][ T306] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 32.996575][ T306] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 32.996754][ T306] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 32.997022][ T306] ? __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) 
[ 32.997211][ T306] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 32.997382][ T306] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   32.997588][  T306] RIP: 0033:0x7faa6a5c17b7
[ 32.997767][ T306] 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)
[   32.998448][  T306] RSP: 002b:00007ffe9a1daa28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   32.998704][  T306] RAX: ffffffffffffffda RBX: 00007ffe9a1db150 RCX: 00007faa6a5c17b7
[   32.998952][  T306] RDX: 0000000000000000 RSI: 00007ffe9a1daa90 RDI: 0000000000000005
[   32.999296][  T306] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   32.999546][  T306] R10: 0000000031236910 R11: 0000000000000246 R12: 0000000000000004
[   32.999822][  T306] R13: 0000000066bea712 R14: 0000000000496600 R15: 0000000000000000
| [   33.002318][  T306] 1 lock held by ip/306:
| [ 33.002448][ T306] #0: ffffffff9adbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   33.002796][  T306]
| [   33.002796][  T306] stack backtrace:
[   33.003354][  T306] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   33.003721][  T306] Call Trace:
[   33.003874][  T306]  <TASK>
[ 33.003962][ T306] dump_stack_lvl (lib/dump_stack.c:122) 
[ 33.004234][ T306] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 33.004402][ T306] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 33.004652][ T306] 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
[ 33.004896][ T306] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 33.005291][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 33.005502][ T306] br_add_if (net/bridge/br_if.c:692) bridge
[ 33.005705][ T306] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 33.005877][ T306] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 33.006186][ T306] do_setlink (net/core/rtnetlink.c:2907) 
[ 33.006354][ T306] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 33.006524][ T306] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 33.006699][ T306] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 33.006961][ T306] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 33.007129][ T306] ? __kernel_text_address (kernel/extable.c:79) 
[ 33.007296][ T306] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 33.007468][ T306] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 33.007786][ T306] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 33.007976][ T306] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 33.008142][ T306] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 33.008309][ T306] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 33.008573][ T306] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 33.008704][ T306] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 33.008873][ T306] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 33.009053][ T306] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 33.009226][ T306] ? 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) 
[ 33.009494][ T306] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 33.009681][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 33.009890][ T306] ? __create_object (mm/kmemleak.c:751) 
[ 33.010059][ T306] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 33.010324][ T306] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 33.010451][ T306] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 33.010618][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 33.010790][ T306] ? 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) 
[ 33.011050][ T306] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 33.011181][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 33.011348][ T306] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 33.011512][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 33.011684][ T306] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 33.011992][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 33.012159][ T306] ? 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) 
[ 33.012334][ T306] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 33.012502][ T306] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 33.012673][ T306] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 33.012842][ T306] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 33.013010][ T306] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 33.013173][ T306] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 33.013344][ T306] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 33.013521][ T306] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 33.013694][ T306] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 33.013858][ T306] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 33.014157][ T306] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 33.014332][ T306] ___sys_sendmsg (net/socket.c:2653) 
[ 33.014504][ T306] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 33.014676][ T306] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 33.014938][ T306] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 33.015101][ T306] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 33.015326][ T306] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 33.015494][ T306] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 33.015775][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 33.016005][ T306] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 33.016177][ T306] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 33.016342][ T306] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 33.016507][ T306] ? __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) 
[ 33.016701][ T306] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 33.016868][ T306] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   33.017080][  T306] RIP: 0033:0x7faa6a5c17b7
[ 33.017355][ T306] 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)
[   33.017930][  T306] RSP: 002b:00007ffe9a1daa28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   33.018388][  T306] RAX: ffffffffffffffda RBX: 00007ffe9a1db150 RCX: 00007faa6a5c17b7
[   33.018640][  T306] RDX: 0000000000000000 RSI: 00007ffe9a1daa90 RDI: 0000000000000005
[   33.018885][  T306] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   33.019228][  T306] R10: 0000000031236910 R11: 0000000000000246 R12: 0000000000000004


Finger prints:
lockdep_rcu_suspicious:br_get_link_af_size_filtered:br_info_notify:br_add_if:do_setlink