======================================
| [   42.418826][  T394] 1 lock held by ip/394:
| [ 42.418970][ T394] #0: ffffffffb4bbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   42.419321][  T394]
| [   42.419321][  T394] stack backtrace:
[   42.419877][  T394] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   42.420290][  T394] Call Trace:
[   42.420444][  T394]  <TASK>
[ 42.420545][ T394] dump_stack_lvl (lib/dump_stack.c:122) 
[ 42.420743][ T394] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 42.420944][ T394] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 42.421251][ T394] 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
[ 42.421520][ T394] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 42.421739][ T394] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.421973][ T394] br_add_if (net/bridge/br_if.c:692) bridge
[ 42.422192][ T394] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 42.422384][ T394] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 42.422624][ T394] do_setlink (net/core/rtnetlink.c:2907) 
[ 42.422812][ T394] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 42.423000][ T394] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 42.423189][ T394] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 42.423378][ T394] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 42.423566][ T394] ? __kernel_text_address (kernel/extable.c:79) 
[ 42.423753][ T394] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 42.423942][ T394] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 42.424178][ T394] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 42.424377][ T394] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 42.424564][ T394] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 42.424751][ T394] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 42.424942][ T394] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 42.425086][ T394] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 42.425291][ T394] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 42.425483][ T394] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 42.425678][ T394] ? 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) 
[ 42.425866][ T394] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 42.426056][ T394] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.426287][ T394] ? __create_object (mm/kmemleak.c:751) 
[ 42.426480][ T394] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 42.426671][ T394] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 42.426813][ T394] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 42.426997][ T394] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 42.427184][ T394] ? 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) 
[ 42.427369][ T394] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 42.427513][ T394] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 42.427704][ T394] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 42.427886][ T394] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 42.428071][ T394] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 42.428274][ T394] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 42.428458][ T394] ? 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) 
[ 42.428650][ T394] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 42.428842][ T394] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 42.429030][ T394] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 42.429218][ T394] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 42.429405][ T394] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 42.429585][ T394] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 42.429777][ T394] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 42.429969][ T394] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 42.430166][ T394] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 42.430354][ T394] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 42.430586][ T394] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 42.430779][ T394] ___sys_sendmsg (net/socket.c:2653) 
[ 42.430966][ T394] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 42.431152][ T394] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 42.431345][ T394] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 42.431526][ T394] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 42.431762][ T394] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 42.431948][ T394] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 42.432135][ T394] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.432368][ T394] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 42.432566][ T394] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 42.432759][ T394] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 42.432939][ T394] ? __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) 
[ 42.433149][ T394] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 42.433335][ T394] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   42.433565][  T394] RIP: 0033:0x7fa8e5bf67b7
[ 42.433760][ T394] 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)
[   42.434391][  T394] RSP: 002b:00007ffcfbeceb48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   42.434676][  T394] RAX: ffffffffffffffda RBX: 00007ffcfbecf270 RCX: 00007fa8e5bf67b7
[   42.434951][  T394] RDX: 0000000000000000 RSI: 00007ffcfbecebb0 RDI: 0000000000000005
[   42.435244][  T394] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   42.435524][  T394] R10: 000000003f0e3910 R11: 0000000000000246 R12: 0000000000000004
[   42.435801][  T394] R13: 0000000066bea3ff R14: 0000000000496600 R15: 0000000000000000
| [   42.438015][  T394] 1 lock held by ip/394:
| [ 42.438163][ T394] #0: ffffffffb4bbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   42.438494][  T394]
| [   42.438494][  T394] stack backtrace:
[   42.439009][  T394] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   42.439413][  T394] Call Trace:
[   42.439553][  T394]  <TASK>
[ 42.439654][ T394] dump_stack_lvl (lib/dump_stack.c:122) 
[ 42.439846][ T394] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 42.440028][ T394] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 42.440301][ T394] 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
[ 42.440563][ T394] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 42.440773][ T394] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.441005][ T394] br_add_if (net/bridge/br_if.c:692) bridge
[ 42.441225][ T394] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 42.441406][ T394] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 42.441636][ T394] do_setlink (net/core/rtnetlink.c:2907) 
[ 42.441819][ T394] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 42.442015][ T394] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 42.442208][ T394] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 42.442397][ T394] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 42.442583][ T394] ? __kernel_text_address (kernel/extable.c:79) 
[ 42.442768][ T394] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 42.442949][ T394] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 42.443174][ T394] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 42.443374][ T394] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 42.443559][ T394] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 42.443744][ T394] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 42.443928][ T394] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 42.444071][ T394] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 42.444262][ T394] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 42.444450][ T394] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 42.444641][ T394] ? 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) 
[ 42.444831][ T394] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 42.445029][ T394] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.445266][ T394] ? __create_object (mm/kmemleak.c:751) 
[ 42.445450][ T394] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 42.445641][ T394] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 42.445781][ T394] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 42.445973][ T394] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 42.446158][ T394] ? 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) 
[ 42.446339][ T394] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 42.446486][ T394] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 42.446672][ T394] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 42.446853][ T394] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 42.447035][ T394] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 42.447233][ T394] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 42.447419][ T394] ? 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) 
[ 42.447609][ T394] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 42.447796][ T394] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 42.447982][ T394] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 42.448169][ T394] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 42.448359][ T394] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 42.448544][ T394] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 42.448730][ T394] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 42.448921][ T394] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 42.449108][ T394] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 42.449288][ T394] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 42.449515][ T394] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 42.449711][ T394] ___sys_sendmsg (net/socket.c:2653) 
[ 42.449898][ T394] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 42.450084][ T394] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 42.450267][ T394] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 42.450446][ T394] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 42.450677][ T394] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 42.450859][ T394] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 42.451057][ T394] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.451285][ T394] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 42.451478][ T394] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 42.451657][ T394] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 42.451839][ T394] ? __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) 
[ 42.452041][ T394] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 42.452234][ T394] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   42.452459][  T394] RIP: 0033:0x7fa8e5bf67b7
[ 42.452654][ T394] 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)
[   42.453285][  T394] RSP: 002b:00007ffcfbeceb48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   42.453564][  T394] RAX: ffffffffffffffda RBX: 00007ffcfbecf270 RCX: 00007fa8e5bf67b7
[   42.454026][  T394] RDX: 0000000000000000 RSI: 00007ffcfbecebb0 RDI: 0000000000000005
[   42.454300][  T394] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   42.454570][  T394] R10: 000000003f0e3910 R11: 0000000000000246 R12: 0000000000000004
[   42.454942][  T394] R13: 0000000066bea3ff R14: 0000000000496600 R15: 0000000000000000
| [   42.457342][  T394] 1 lock held by ip/394:
| [ 42.457489][ T394] #0: ffffffffb4bbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   42.457824][  T394]
| [   42.457824][  T394] stack backtrace:
[   42.458414][  T394] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   42.458820][  T394] Call Trace:
[   42.458960][  T394]  <TASK>
[ 42.459055][ T394] dump_stack_lvl (lib/dump_stack.c:122) 
[ 42.459341][ T394] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 42.459520][ T394] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 42.459787][ T394] 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
[ 42.460046][ T394] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 42.460361][ T394] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.460587][ T394] br_add_if (net/bridge/br_if.c:692) bridge
[ 42.460800][ T394] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 42.460980][ T394] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 42.461307][ T394] do_setlink (net/core/rtnetlink.c:2907) 
[ 42.461487][ T394] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 42.461672][ T394] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 42.461852][ T394] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 42.462137][ T394] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 42.462320][ T394] ? __kernel_text_address (kernel/extable.c:79) 
[ 42.462500][ T394] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 42.462679][ T394] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 42.463272][ T394] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 42.463466][ T394] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 42.463649][ T394] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 42.463836][ T394] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 42.464116][ T394] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 42.464258][ T394] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 42.464444][ T394] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 42.464689][ T394] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 42.464881][ T394] ? 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) 
[ 42.465065][ T394] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 42.465260][ T394] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.465486][ T394] ? __create_object (mm/kmemleak.c:751) 
[ 42.465681][ T394] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 42.465875][ T394] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 42.466012][ T394] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 42.466194][ T394] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 42.466377][ T394] ? 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) 
[ 42.466559][ T394] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 42.466702][ T394] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 42.466886][ T394] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 42.467073][ T394] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 42.467263][ T394] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 42.467460][ T394] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 42.467645][ T394] ? 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) 
[ 42.467831][ T394] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 42.468025][ T394] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 42.468213][ T394] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 42.468398][ T394] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 42.468591][ T394] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 42.468771][ T394] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 42.468959][ T394] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 42.469152][ T394] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 42.469337][ T394] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 42.469523][ T394] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 42.469751][ T394] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 42.469944][ T394] ___sys_sendmsg (net/socket.c:2653) 
[ 42.470135][ T394] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 42.470318][ T394] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 42.470602][ T394] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 42.470784][ T394] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 42.471009][ T394] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 42.471193][ T394] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 42.471384][ T394] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 42.471619][ T394] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 42.471813][ T394] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 42.471999][ T394] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 42.472290][ T394] ? __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) 
[ 42.472495][ T394] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 42.472681][ T394] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   42.472908][  T394] RIP: 0033:0x7fa8e5bf67b7
[ 42.473199][ T394] 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)
[   42.473836][  T394] RSP: 002b:00007ffcfbeceb48 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   42.474210][  T394] RAX: ffffffffffffffda RBX: 00007ffcfbecf270 RCX: 00007fa8e5bf67b7
[   42.474482][  T394] RDX: 0000000000000000 RSI: 00007ffcfbecebb0 RDI: 0000000000000005
[   42.474760][  T394] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   42.475133][  T394] R10: 000000003f0e3910 R11: 0000000000000246 R12: 0000000000000004


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