======================================
| [   32.891000][  T306] 1 lock held by ip/306:
| [ 32.891128][ T306] #0: ffffffffaedbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   32.891439][  T306]
| [   32.891439][  T306] stack backtrace:
[   32.891894][  T306] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   32.892251][  T306] Call Trace:
[   32.892380][  T306]  <TASK>
[ 32.892467][ T306] dump_stack_lvl (lib/dump_stack.c:122) 
[ 32.892638][ T306] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 32.892802][ T306] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 32.893083][ 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
[ 32.893325][ T306] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 32.893523][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.893732][ T306] br_add_if (net/bridge/br_if.c:692) bridge
[ 32.893928][ T306] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 32.894092][ T306] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 32.894301][ T306] do_setlink (net/core/rtnetlink.c:2907) 
[ 32.894467][ T306] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 32.894638][ T306] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 32.894805][ T306] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 32.894991][ T306] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 32.895157][ T306] ? __kernel_text_address (kernel/extable.c:79) 
[ 32.895320][ T306] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 32.895483][ T306] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 32.895693][ T306] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 32.895874][ T306] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 32.896040][ T306] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 32.896204][ T306] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 32.896370][ T306] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.896499][ T306] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 32.896669][ T306] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 32.896842][ T306] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 32.897016][ 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) 
[ 32.897187][ T306] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 32.897363][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.897570][ T306] ? __create_object (mm/kmemleak.c:751) 
[ 32.897738][ T306] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 32.897908][ T306] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 32.898034][ T306] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 32.898203][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.898370][ 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) 
[ 32.898537][ T306] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.898674][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 32.898842][ T306] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 32.899007][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.899233][ T306] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 32.899449][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 32.899647][ 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) 
[ 32.899845][ T306] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 32.900048][ T306] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 32.900251][ T306] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.900453][ T306] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 32.900655][ T306] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 32.900850][ T306] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 32.901053][ T306] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 32.901259][ T306] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 32.901457][ T306] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 32.901651][ T306] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 32.901900][ T306] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 32.902111][ T306] ___sys_sendmsg (net/socket.c:2653) 
[ 32.902312][ T306] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 32.902510][ T306] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.902714][ T306] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 32.902908][ T306] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 32.903154][ T306] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 32.903354][ T306] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 32.903566][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.903814][ T306] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 32.904027][ T306] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 32.904216][ T306] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 32.904400][ 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) 
[ 32.904603][ T306] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 32.904773][ T306] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   32.905014][  T306] RIP: 0033:0x7f23166517b7
[ 32.905213][ 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)
[   32.905795][  T306] RSP: 002b:00007ffe666153e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   32.906049][  T306] RAX: ffffffffffffffda RBX: 00007ffe66615b10 RCX: 00007f23166517b7
[   32.906340][  T306] RDX: 0000000000000000 RSI: 00007ffe66615450 RDI: 0000000000000005
[   32.906616][  T306] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   32.906860][  T306] R10: 0000000005401910 R11: 0000000000000246 R12: 0000000000000004
[   32.907127][  T306] R13: 0000000066bea1f7 R14: 0000000000496600 R15: 0000000000000000
| [   32.909618][  T306] 1 lock held by ip/306:
| [ 32.909754][ T306] #0: ffffffffaedbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   32.910074][  T306]
| [   32.910074][  T306] stack backtrace:
[   32.910610][  T306] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   32.910977][  T306] Call Trace:
[   32.911106][  T306]  <TASK>
[ 32.911198][ T306] dump_stack_lvl (lib/dump_stack.c:122) 
[ 32.911373][ T306] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 32.911551][ T306] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 32.911808][ 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
[ 32.912075][ T306] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 32.912306][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.912516][ T306] br_add_if (net/bridge/br_if.c:692) bridge
[ 32.912727][ T306] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 32.912915][ T306] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 32.913151][ T306] do_setlink (net/core/rtnetlink.c:2907) 
[ 32.913322][ T306] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 32.913523][ T306] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 32.913689][ T306] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 32.913878][ T306] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 32.914056][ T306] ? __kernel_text_address (kernel/extable.c:79) 
[ 32.914220][ T306] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 32.914385][ T306] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 32.914594][ T306] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 32.914780][ T306] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 32.914964][ T306] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 32.915134][ T306] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 32.915307][ T306] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.915437][ T306] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 32.915607][ T306] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 32.915778][ T306] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 32.915961][ 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) 
[ 32.916140][ T306] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 32.916311][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.916518][ T306] ? __create_object (mm/kmemleak.c:751) 
[ 32.916695][ T306] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 32.916882][ T306] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 32.917009][ T306] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 32.917179][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.917347][ 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) 
[ 32.917515][ T306] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.917646][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 32.917811][ T306] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 32.917976][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.918148][ T306] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 32.918329][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 32.918494][ 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) 
[ 32.918665][ T306] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 32.918833][ T306] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 32.919000][ T306] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.919168][ T306] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 32.919342][ T306] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 32.919526][ T306] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 32.919699][ T306] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 32.919870][ T306] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 32.920036][ T306] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 32.920208][ T306] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 32.920411][ T306] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 32.920587][ T306] ___sys_sendmsg (net/socket.c:2653) 
[ 32.920797][ T306] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 32.920965][ T306] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.921136][ T306] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 32.921299][ T306] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 32.921502][ T306] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 32.921669][ T306] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 32.921847][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.922053][ T306] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 32.922232][ T306] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 32.922397][ T306] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 32.922563][ 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) 
[ 32.922751][ T306] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 32.922919][ T306] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   32.923128][  T306] RIP: 0033:0x7f23166517b7
[ 32.923309][ 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)
[   32.923885][  T306] RSP: 002b:00007ffe666153e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   32.924136][  T306] RAX: ffffffffffffffda RBX: 00007ffe66615b10 RCX: 00007f23166517b7
[   32.924383][  T306] RDX: 0000000000000000 RSI: 00007ffe66615450 RDI: 0000000000000005
[   32.924628][  T306] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   32.925106][  T306] R10: 0000000005401910 R11: 0000000000000246 R12: 0000000000000004
[   32.925352][  T306] R13: 0000000066bea1f7 R14: 0000000000496600 R15: 0000000000000000
| [   32.927787][  T306] 1 lock held by ip/306:
| [ 32.927933][ T306] #0: ffffffffaedbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   32.928501][  T306]
| [   32.928501][  T306] stack backtrace:
[   32.928949][  T306] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   32.929316][  T306] Call Trace:
[   32.929442][  T306]  <TASK>
[ 32.929537][ T306] dump_stack_lvl (lib/dump_stack.c:122) 
[ 32.929705][ T306] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 32.929869][ T306] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 32.930210][ 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
[ 32.930451][ T306] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 32.930653][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.930856][ T306] br_add_if (net/bridge/br_if.c:692) bridge
[ 32.931058][ T306] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 32.931220][ T306] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 32.931425][ T306] do_setlink (net/core/rtnetlink.c:2907) 
[ 32.931600][ T306] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 32.931765][ T306] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 32.931928][ T306] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 32.932091][ T306] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 32.932258][ T306] ? __kernel_text_address (kernel/extable.c:79) 
[ 32.932532][ T306] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 32.932695][ T306] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 32.932904][ T306] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 32.933086][ T306] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 32.933377][ T306] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 32.933547][ T306] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 32.933711][ T306] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.933889][ T306] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 32.934074][ T306] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 32.934346][ T306] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 32.934516][ 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) 
[ 32.934680][ T306] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 32.934875][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.935081][ T306] ? __create_object (mm/kmemleak.c:751) 
[ 32.935278][ T306] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 32.935455][ T306] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 32.935588][ T306] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 32.935755][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.935916][ 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) 
[ 32.936078][ T306] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.936216][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 32.936385][ T306] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 32.936645][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.936809][ T306] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 32.937002][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 32.937172][ 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) 
[ 32.937437][ T306] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 32.937603][ T306] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 32.937771][ T306] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.937939][ T306] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 32.938211][ T306] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 32.938373][ T306] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 32.938545][ T306] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 32.938721][ T306] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 32.938891][ T306] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 32.939060][ T306] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 32.939260][ T306] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 32.939434][ T306] ___sys_sendmsg (net/socket.c:2653) 
[ 32.939600][ T306] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 32.939858][ T306] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.940023][ T306] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 32.940192][ T306] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 32.940395][ T306] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 32.940654][ T306] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 32.940832][ T306] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.941037][ T306] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 32.941209][ T306] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 32.941470][ T306] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 32.941636][ 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) 
[ 32.941820][ T306] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 32.941989][ T306] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   32.942190][  T306] RIP: 0033:0x7f23166517b7
[ 32.942365][ 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)
[   32.943033][  T306] RSP: 002b:00007ffe666153e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   32.943285][  T306] RAX: ffffffffffffffda RBX: 00007ffe66615b10 RCX: 00007f23166517b7
[   32.943535][  T306] RDX: 0000000000000000 RSI: 00007ffe66615450 RDI: 0000000000000005
[   32.943885][  T306] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   32.944125][  T306] R10: 0000000005401910 R11: 0000000000000246 R12: 0000000000000004
[   32.944471][  T306] R13: 0000000066bea1f7 R14: 0000000000496600 R15: 0000000000000000
| [   33.728339][  T311] 1 lock held by bridge/311:
| [ 33.728510][ T311] #0: ffffffffaedbc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   33.728830][  T311]
| [   33.728830][  T311] stack backtrace:
[   33.729305][  T311] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   33.729689][  T311] Call Trace:
[   33.729826][  T311]  <TASK>
[ 33.729914][ T311] dump_stack_lvl (lib/dump_stack.c:122) 
[ 33.730084][ T311] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 33.730267][ T311] 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
[ 33.730539][ T311] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 33.730746][ T311] br_setlink (net/bridge/br_netlink.c:669 net/bridge/br_netlink.c:1136) bridge
[ 33.730941][ T311] ? __pfx_br_setlink (net/bridge/br_netlink.c:1085) bridge
[ 33.731138][ T311] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[ 33.731300][ T311] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 33.731463][ T311] ? 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) 
[ 33.731643][ T311] ? __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) 
[ 33.731814][ T311] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:104) 
[ 33.732014][ T311] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 33.732175][ T311] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 33.732340][ T311] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[ 33.732504][ T311] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 33.732692][ T311] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 33.732857][ T311] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 33.733027][ T311] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 33.733188][ T311] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 33.733349][ T311] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[ 33.733514][ T311] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 33.733691][ T311] rtnl_bridge_setlink (net/core/rtnetlink.c:5225) 
[ 33.733856][ T311] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 33.734024][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 33.734190][ T311] ? 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) 
[ 33.734362][ T311] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 33.734492][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 33.734669][ T311] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 33.734850][ T311] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 33.735020][ T311] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 33.735201][ T311] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 33.735365][ T311] ? 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) 
[ 33.735541][ T311] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 33.735716][ T311] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 33.735883][ T311] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 33.736054][ T311] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 33.736223][ T311] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 33.736385][ T311] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 33.736567][ T311] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 33.736740][ T311] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 33.736912][ T311] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 33.737097][ T311] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 33.737313][ T311] ? 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) 
[ 33.737482][ T311] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3758 kernel/locking/lockdep.c:3781 kernel/locking/lockdep.c:3836) 
[ 33.737682][ T311] ___sys_sendmsg (net/socket.c:2653) 
[ 33.737848][ T311] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 33.738029][ T311] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 33.738203][ T311] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 33.738395][ T311] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 33.738585][ T311] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 33.738757][ T311] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 33.738936][ T311] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 33.739107][ T311] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 33.739286][ T311] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 33.739473][ T311] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 33.739666][ T311] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   33.739888][  T311] RIP: 0033:0x7ff2c86ad7b7
[ 33.740059][ T311] 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)
[   33.740728][  T311] RSP: 002b:00007ffd796906d8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   33.740981][  T311] RAX: ffffffffffffffda RBX: 000000000000ffff RCX: 00007ff2c86ad7b7
[   33.741228][  T311] RDX: 0000000000000000 RSI: 00007ffd79690740 RDI: 0000000000000005
[   33.741473][  T311] RBP: 00007ffd79690830 R08: 0000000000000034 R09: 0000000000000000
[   33.741749][  T311] R10: 00007ff2c8566708 R11: 0000000000000246 R12: 000000000000000a


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