======================================
| [   35.395625][  T331] 1 lock held by ip/331:
| [ 35.395789][ T331] #0: ffffffffa27bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   35.396154][  T331]
| [   35.396154][  T331] stack backtrace:
[   35.396704][  T331] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.397139][  T331] Call Trace:
[   35.397299][  T331]  <TASK>
[ 35.397404][ T331] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.397610][ T331] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.397808][ T331] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 35.398132][ T331] 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
[ 35.398416][ T331] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 35.398644][ T331] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.398893][ T331] br_add_if (net/bridge/br_if.c:692) bridge
[ 35.399126][ T331] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 35.399325][ T331] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 35.399576][ T331] do_setlink (net/core/rtnetlink.c:2907) 
[ 35.399776][ T331] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 35.399979][ T331] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 35.400177][ T331] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 35.400374][ T331] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.400574][ T331] ? __kernel_text_address (kernel/extable.c:79) 
[ 35.400770][ T331] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 35.400969][ T331] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 35.401216][ T331] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.401429][ T331] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.401628][ T331] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.401826][ T331] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 35.402025][ T331] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.402179][ T331] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 35.402390][ T331] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 35.402601][ T331] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 35.402807][ T331] ? 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) 
[ 35.403007][ T331] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 35.403214][ T331] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.403460][ T331] ? __create_object (mm/kmemleak.c:751) 
[ 35.403662][ T331] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.403868][ T331] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 35.404021][ T331] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.404222][ T331] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.404421][ T331] ? 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) 
[ 35.404620][ T331] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.404780][ T331] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.404987][ T331] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.405187][ T331] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.405390][ T331] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.405604][ T331] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.405803][ T331] ? 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) 
[ 35.406004][ T331] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.406207][ T331] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.406412][ T331] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.406616][ T331] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.406818][ T331] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.407015][ T331] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.407217][ T331] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.407421][ T331] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.407622][ T331] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.407819][ T331] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.408073][ T331] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.408286][ T331] ___sys_sendmsg (net/socket.c:2653) 
[ 35.408486][ T331] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.408686][ T331] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.408893][ T331] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.409087][ T331] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 35.409333][ T331] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.409536][ T331] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.409744][ T331] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.409992][ T331] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.410197][ T331] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.410395][ T331] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.410591][ T331] ? __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) 
[ 35.410810][ T331] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.411011][ T331] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.411257][  T331] RIP: 0033:0x7fde8c1cf7b7
[ 35.411467][ T331] 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)
[   35.412151][  T331] RSP: 002b:00007ffc0e2305c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.412472][  T331] RAX: ffffffffffffffda RBX: 00007ffc0e230cf0 RCX: 00007fde8c1cf7b7
[   35.412921][  T331] RDX: 0000000000000000 RSI: 00007ffc0e230630 RDI: 0000000000000005
[   35.413219][  T331] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   35.413514][  T331] R10: 0000000003318910 R11: 0000000000000246 R12: 0000000000000004
[   35.413806][  T331] R13: 0000000066bea619 R14: 0000000000496600 R15: 0000000000000000
| [   35.417278][  T331] 1 lock held by ip/331:
| [ 35.417431][ T331] #0: ffffffffa27bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   35.417810][  T331]
| [   35.417810][  T331] stack backtrace:
[   35.418352][  T331] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.418787][  T331] Call Trace:
[   35.418939][  T331]  <TASK>
[ 35.419045][ T331] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.419248][ T331] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.419445][ T331] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 35.419727][ T331] 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
[ 35.420008][ T331] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 35.420241][ T331] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.420489][ T331] br_add_if (net/bridge/br_if.c:692) bridge
[ 35.420719][ T331] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 35.420916][ T331] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 35.421164][ T331] do_setlink (net/core/rtnetlink.c:2907) 
[ 35.421362][ T331] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 35.421561][ T331] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 35.421759][ T331] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 35.421960][ T331] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.422159][ T331] ? __kernel_text_address (kernel/extable.c:79) 
[ 35.422370][ T331] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 35.422570][ T331] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 35.422817][ T331] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.423027][ T331] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.423225][ T331] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.423427][ T331] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 35.423630][ T331] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.423784][ T331] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 35.423986][ T331] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 35.424190][ T331] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 35.424395][ T331] ? 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) 
[ 35.424591][ T331] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 35.424795][ T331] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.425042][ T331] ? __create_object (mm/kmemleak.c:751) 
[ 35.425244][ T331] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.425447][ T331] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 35.425600][ T331] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.425799][ T331] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.425996][ T331] ? 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) 
[ 35.426193][ T331] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.426347][ T331] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.426546][ T331] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.426743][ T331] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.426948][ T331] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.427161][ T331] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.427360][ T331] ? 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) 
[ 35.427561][ T331] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.427763][ T331] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.427962][ T331] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.428166][ T331] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.428372][ T331] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.428566][ T331] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.428915][ T331] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.429120][ T331] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.429320][ T331] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.429515][ T331] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.429764][ T331] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.429973][ T331] ___sys_sendmsg (net/socket.c:2653) 
[ 35.430176][ T331] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.430375][ T331] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.430672][ T331] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.430869][ T331] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 35.431113][ T331] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.431313][ T331] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.431610][ T331] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.431857][ T331] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.432066][ T331] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.432265][ T331] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.432572][ T331] ? __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) 
[ 35.432791][ T331] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.432992][ T331] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.433238][  T331] RIP: 0033:0x7fde8c1cf7b7
[ 35.433553][ T331] 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)
[   35.434230][  T331] RSP: 002b:00007ffc0e2305c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.434623][  T331] RAX: ffffffffffffffda RBX: 00007ffc0e230cf0 RCX: 00007fde8c1cf7b7
[   35.434915][  T331] RDX: 0000000000000000 RSI: 00007ffc0e230630 RDI: 0000000000000005
[   35.435210][  T331] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   35.435604][  T331] R10: 0000000003318910 R11: 0000000000000246 R12: 0000000000000004
[   35.435902][  T331] R13: 0000000066bea619 R14: 0000000000496600 R15: 0000000000000000
| [   35.438588][  T331] 1 lock held by ip/331:
| [ 35.438745][ T331] #0: ffffffffa27bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   35.439246][  T331]
| [   35.439246][  T331] stack backtrace:
[   35.439787][  T331] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.440217][  T331] Call Trace:
[   35.440367][  T331]  <TASK>
[ 35.440474][ T331] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.440676][ T331] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.440872][ T331] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 35.441251][ T331] 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
[ 35.441532][ T331] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 35.441759][ T331] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.442007][ T331] br_add_if (net/bridge/br_if.c:692) bridge
[ 35.442241][ T331] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 35.442450][ T331] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 35.442699][ T331] do_setlink (net/core/rtnetlink.c:2907) 
[ 35.442997][ T331] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 35.443196][ T331] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 35.443393][ T331] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 35.443591][ T331] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.443790][ T331] ? __kernel_text_address (kernel/extable.c:79) 
[ 35.443992][ T331] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 35.444191][ T331] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 35.444436][ T331] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.444646][ T331] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.444843][ T331] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.445040][ T331] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 35.445235][ T331] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.445389][ T331] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 35.445786][ T331] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 35.445989][ T331] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 35.446193][ T331] ? 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) 
[ 35.446394][ T331] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 35.446692][ T331] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.446937][ T331] ? __create_object (mm/kmemleak.c:751) 
[ 35.447138][ T331] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.447340][ T331] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 35.447590][ T331] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.447789][ T331] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.447986][ T331] ? 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) 
[ 35.448182][ T331] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.448336][ T331] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.448630][ T331] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.448826][ T331] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.449025][ T331] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.449238][ T331] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.449535][ T331] ? 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) 
[ 35.449735][ T331] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.449948][ T331] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.450147][ T331] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.450447][ T331] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.450652][ T331] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.450848][ T331] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.451050][ T331] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.451264][ T331] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.451558][ T331] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.451755][ T331] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.451999][ T331] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.452209][ T331] ___sys_sendmsg (net/socket.c:2653) 
[ 35.452518][ T331] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.452715][ T331] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.452915][ T331] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.453116][ T331] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 35.453457][ T331] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.453657][ T331] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.453861][ T331] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.454108][ T331] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.454410][ T331] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.454608][ T331] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.454812][ T331] ? __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) 
[ 35.455037][ T331] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.455333][ T331] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.455578][  T331] RIP: 0033:0x7fde8c1cf7b7
[ 35.455786][ T331] 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)
[   35.456574][  T331] RSP: 002b:00007ffc0e2305c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.456875][  T331] RAX: ffffffffffffffda RBX: 00007ffc0e230cf0 RCX: 00007fde8c1cf7b7
[   35.457271][  T331] RDX: 0000000000000000 RSI: 00007ffc0e230630 RDI: 0000000000000005
[   35.457563][  T331] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   35.457854][  T331] R10: 0000000003318910 R11: 0000000000000246 R12: 0000000000000004
[   35.458250][  T331] R13: 0000000066bea619 R14: 0000000000496600 R15: 0000000000000000
| [   37.192749][  T344] 1 lock held by bridge/344:
| [ 37.193667][ T344] #0: ffffffffa27bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   37.193983][  T344]
| [   37.193983][  T344] stack backtrace:
[   37.194434][  T344] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   37.194799][  T344] Call Trace:
[   37.194926][  T344]  <TASK>
[ 37.195013][ T344] dump_stack_lvl (lib/dump_stack.c:122) 
[ 37.195189][ T344] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 37.195358][ T344] 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
[ 37.195605][ T344] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 37.195812][ T344] br_setlink (net/bridge/br_netlink.c:669 net/bridge/br_netlink.c:1136) bridge
[ 37.196010][ T344] ? __pfx_br_setlink (net/bridge/br_netlink.c:1085) bridge
[ 37.196215][ T344] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[ 37.196380][ T344] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 37.196547][ T344] ? 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) 
[ 37.196713][ T344] ? __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) 
[ 37.196884][ T344] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:104) 
[ 37.197090][ T344] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 37.197279][ T344] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 37.197445][ T344] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[ 37.197613][ T344] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 37.197780][ T344] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 37.197948][ T344] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 37.198113][ T344] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 37.198280][ T344] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 37.198449][ T344] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[ 37.198616][ T344] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 37.198798][ T344] rtnl_bridge_setlink (net/core/rtnetlink.c:5225) 
[ 37.198966][ T344] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 37.199144][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 37.199309][ T344] ? 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) 
[ 37.199479][ T344] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 37.199609][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 37.199781][ T344] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 37.199952][ T344] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 37.200119][ T344] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 37.200300][ T344] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 37.200465][ T344] ? 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) 
[ 37.200634][ T344] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 37.200804][ T344] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 37.200969][ T344] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 37.201142][ T344] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 37.201313][ T344] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 37.201476][ T344] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 37.201645][ T344] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 37.201817][ T344] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 37.201989][ T344] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 37.202159][ T344] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 37.202396][ T344] ? 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) 
[ 37.202577][ T344] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3758 kernel/locking/lockdep.c:3781 kernel/locking/lockdep.c:3836) 
[ 37.202762][ T344] ___sys_sendmsg (net/socket.c:2653) 
[ 37.202956][ T344] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 37.203125][ T344] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 37.203296][ T344] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 37.203475][ T344] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 37.203645][ T344] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 37.203823][ T344] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 37.204004][ T344] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 37.204190][ T344] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 37.204372][ T344] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 37.204571][ T344] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 37.204756][ T344] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   37.204977][  T344] RIP: 0033:0x7fd7410737b7
[ 37.205166][ T344] 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)
[   37.205784][  T344] RSP: 002b:00007ffc6ce2e998 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   37.206057][  T344] RAX: ffffffffffffffda RBX: 000000000000ffff RCX: 00007fd7410737b7
[   37.206324][  T344] RDX: 0000000000000000 RSI: 00007ffc6ce2ea00 RDI: 0000000000000005
[   37.206587][  T344] RBP: 00007ffc6ce2eaf0 R08: 0000000000000034 R09: 0000000000000000
[   37.206857][  T344] R10: 00007fd740f2c708 R11: 0000000000000246 R12: 000000000000022b


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_add_if:do_setlink