======================================
| [   32.333034][  T301] 1 lock held by ip/301:
| [ 32.333172][ T301] #0: ffffffffac7bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   32.333491][  T301]
| [   32.333491][  T301] stack backtrace:
[   32.333964][  T301] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   32.334340][  T301] Call Trace:
[   32.334474][  T301]  <TASK>
[ 32.334566][ T301] dump_stack_lvl (lib/dump_stack.c:122) 
[ 32.334743][ T301] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 32.334914][ T301] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 32.335207][ T301] 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
[ 32.335455][ T301] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 32.335676][ T301] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.335920][ T301] br_add_if (net/bridge/br_if.c:692) bridge
[ 32.336145][ T301] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 32.336331][ T301] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 32.336544][ T301] do_setlink (net/core/rtnetlink.c:2907) 
[ 32.336730][ T301] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 32.336926][ T301] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 32.337115][ T301] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 32.337294][ T301] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 32.337476][ T301] ? __kernel_text_address (kernel/extable.c:79) 
[ 32.337660][ T301] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 32.337842][ T301] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 32.338076][ T301] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 32.338273][ T301] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 32.338446][ T301] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 32.338629][ T301] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 32.338806][ T301] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.338963][ T301] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 32.339141][ T301] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 32.339330][ T301] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 32.339522][ T301] ? 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) 
[ 32.339692][ T301] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 32.339893][ T301] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.340106][ T301] ? __create_object (mm/kmemleak.c:751) 
[ 32.340294][ T301] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 32.340493][ T301] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 32.340625][ T301] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 32.340821][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.341058][ T301] ? 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) 
[ 32.341254][ T301] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.341389][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 32.341588][ T301] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 32.341765][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.341973][ T301] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 32.342184][ T301] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 32.342353][ T301] ? 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) 
[ 32.342543][ T301] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 32.342735][ T301] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 32.342927][ T301] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.343119][ T301] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 32.343297][ T301] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 32.343489][ T301] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 32.343668][ T301] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 32.343880][ T301] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 32.344057][ T301] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 32.344239][ T301] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 32.344460][ T301] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 32.344643][ T301] ___sys_sendmsg (net/socket.c:2653) 
[ 32.344831][ T301] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 32.345015][ T301] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.345193][ T301] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 32.345364][ T301] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 32.345573][ T301] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 32.345743][ T301] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 32.345931][ T301] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.346143][ T301] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 32.346322][ T301] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 32.346500][ T301] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 32.346672][ T301] ? __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) 
[ 32.346876][ T301] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 32.347050][ T301] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   32.347261][  T301] RIP: 0033:0x7f3ae2bdd7b7
[ 32.347444][ T301] 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)
[   32.348052][  T301] RSP: 002b:00007ffc932a9458 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   32.348305][  T301] RAX: ffffffffffffffda RBX: 00007ffc932a9b80 RCX: 00007f3ae2bdd7b7
[   32.348560][  T301] RDX: 0000000000000000 RSI: 00007ffc932a94c0 RDI: 0000000000000005
[   32.348828][  T301] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   32.349130][  T301] R10: 000000001127f910 R11: 0000000000000246 R12: 0000000000000004
[   32.349400][  T301] R13: 0000000066bea6a2 R14: 0000000000496600 R15: 0000000000000000
| [   32.352544][  T301] 1 lock held by ip/301:
| [ 32.352690][ T301] #0: ffffffffac7bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   32.353067][  T301]
| [   32.353067][  T301] stack backtrace:
[   32.353563][  T301] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   32.353969][  T301] Call Trace:
[   32.354099][  T301]  <TASK>
[ 32.354206][ T301] dump_stack_lvl (lib/dump_stack.c:122) 
[ 32.354395][ T301] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 32.354579][ T301] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 32.354849][ T301] 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
[ 32.355099][ T301] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 32.355319][ T301] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.355546][ T301] br_add_if (net/bridge/br_if.c:692) bridge
[ 32.355764][ T301] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 32.355964][ T301] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 32.356203][ T301] do_setlink (net/core/rtnetlink.c:2907) 
[ 32.356378][ T301] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 32.356633][ T301] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 32.356906][ T301] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 32.357198][ T301] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 32.357487][ T301] ? __kernel_text_address (kernel/extable.c:79) 
[ 32.357772][ T301] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 32.358066][ T301] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 32.358434][ T301] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 32.358719][ T301] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 32.358896][ T301] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 32.359158][ T301] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 32.359392][ T301] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.359524][ T301] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 32.359700][ T301] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 32.359893][ T301] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 32.360075][ T301] ? 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) 
[ 32.360247][ T301] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 32.360421][ T301] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.360634][ T301] ? __create_object (mm/kmemleak.c:751) 
[ 32.360808][ T301] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 32.360980][ T301] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 32.361108][ T301] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 32.361289][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.361469][ T301] ? 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) 
[ 32.361648][ T301] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.361781][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 32.361957][ T301] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 32.362130][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.362309][ T301] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 32.362494][ T301] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 32.362672][ T301] ? 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) 
[ 32.362844][ T301] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 32.363016][ T301] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 32.363192][ T301] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.363369][ T301] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 32.363542][ T301] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 32.363709][ T301] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 32.363889][ T301] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 32.364067][ T301] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 32.364250][ T301] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 32.364419][ T301] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 32.364634][ T301] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 32.364822][ T301] ___sys_sendmsg (net/socket.c:2653) 
[ 32.364997][ T301] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 32.365173][ T301] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.365349][ T301] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 32.365516][ T301] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 32.365733][ T301] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 32.365903][ T301] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 32.366081][ T301] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.366291][ T301] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 32.366470][ T301] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 32.366640][ T301] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 32.366808][ T301] ? __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) 
[ 32.367005][ T301] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 32.367177][ T301] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   32.367387][  T301] RIP: 0033:0x7f3ae2bdd7b7
[ 32.367568][ T301] 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)
[   32.368147][  T301] RSP: 002b:00007ffc932a9458 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   32.368594][  T301] RAX: ffffffffffffffda RBX: 00007ffc932a9b80 RCX: 00007f3ae2bdd7b7
[   32.368849][  T301] RDX: 0000000000000000 RSI: 00007ffc932a94c0 RDI: 0000000000000005
[   32.369101][  T301] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   32.369448][  T301] R10: 000000001127f910 R11: 0000000000000246 R12: 0000000000000004
[   32.369698][  T301] R13: 0000000066bea6a2 R14: 0000000000496600 R15: 0000000000000000
| [   32.372026][  T301] 1 lock held by ip/301:
| [ 32.372162][ T301] #0: ffffffffac7bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   32.372477][  T301]
| [   32.372477][  T301] stack backtrace:
[   32.372944][  T301] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   32.373410][  T301] Call Trace:
[   32.373539][  T301]  <TASK>
[ 32.373628][ T301] dump_stack_lvl (lib/dump_stack.c:122) 
[ 32.373802][ T301] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 32.373969][ T301] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) bridge
[ 32.374322][ T301] 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
[ 32.374567][ T301] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 32.374765][ T301] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.375077][ T301] br_add_if (net/bridge/br_if.c:692) bridge
[ 32.375286][ T301] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 32.375453][ T301] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 32.375668][ T301] do_setlink (net/core/rtnetlink.c:2907) 
[ 32.375842][ T301] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 32.376012][ T301] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 32.376181][ T301] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 32.376350][ T301] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 32.376525][ T301] ? __kernel_text_address (kernel/extable.c:79) 
[ 32.376788][ T301] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 32.376957][ T301] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 32.377174][ T301] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 32.377363][ T301] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 32.377627][ T301] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 32.377798][ T301] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 32.377971][ T301] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.378105][ T301] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 32.378378][ T301] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 32.378554][ T301] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 32.378731][ T301] ? 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) 
[ 32.378910][ T301] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 32.379180][ T301] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.379393][ T301] ? __create_object (mm/kmemleak.c:751) 
[ 32.379569][ T301] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 32.379746][ T301] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 32.379878][ T301] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 32.380154][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.380329][ T301] ? 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) 
[ 32.380499][ T301] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 32.380640][ T301] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 32.380814][ T301] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 32.380988][ T301] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 32.381163][ T301] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 32.381346][ T301] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 32.381634][ T301] ? 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) 
[ 32.381808][ T301] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 32.381986][ T301] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 32.382165][ T301] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.382343][ T301] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 32.382612][ T301] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 32.382779][ T301] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 32.382956][ T301] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 32.383133][ T301] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 32.383403][ T301] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 32.383571][ T301] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 32.383799][ T301] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 32.383979][ T301] ___sys_sendmsg (net/socket.c:2653) 
[ 32.384346][ T301] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 32.384517][ T301] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 32.384692][ T301] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 32.384859][ T301] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 32.385175][ T301] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 32.385348][ T301] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 32.385528][ T301] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 32.385741][ T301] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 32.386020][ T301] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 32.386194][ T301] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 32.386369][ T301] ? __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) 
[ 32.386565][ T301] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 32.386743][ T301] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   32.386962][  T301] RIP: 0033:0x7f3ae2bdd7b7
[ 32.387148][ T301] 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)
[   32.387842][  T301] RSP: 002b:00007ffc932a9458 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   32.388102][  T301] RAX: ffffffffffffffda RBX: 00007ffc932a9b80 RCX: 00007f3ae2bdd7b7
[   32.388458][  T301] RDX: 0000000000000000 RSI: 00007ffc932a94c0 RDI: 0000000000000005
[   32.388718][  T301] RBP: 0000000000000004 R08: 0000000000000003 R09: 0000000000000000
[   32.388971][  T301] R10: 000000001127f910 R11: 0000000000000246 R12: 0000000000000004
[   32.389392][  T301] R13: 0000000066bea6a2 R14: 0000000000496600 R15: 0000000000000000
| [   48.321774][  T348] 1 lock held by bridge/348:
| [ 48.321953][ T348] #0: ffffffffac7bc508 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   48.322265][  T348]
| [   48.322265][  T348] stack backtrace:
[   48.322734][  T348] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   48.323111][  T348] Call Trace:
[   48.323244][  T348]  <TASK>
[ 48.323336][ T348] dump_stack_lvl (lib/dump_stack.c:122) 
[ 48.323513][ T348] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 48.323689][ T348] 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
[ 48.323948][ T348] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) bridge
[ 48.324156][ T348] br_setlink (net/bridge/br_netlink.c:669 net/bridge/br_netlink.c:1136) bridge
[ 48.324355][ T348] ? __pfx_br_setlink (net/bridge/br_netlink.c:1085) bridge
[ 48.324559][ T348] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[ 48.324725][ T348] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 48.324891][ T348] ? 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) 
[ 48.325065][ T348] ? __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) 
[ 48.325236][ T348] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:104) 
[ 48.325447][ T348] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 48.325611][ T348] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 48.325779][ T348] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[ 48.325948][ T348] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 48.326117][ T348] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 48.326284][ T348] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 48.326454][ T348] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 48.326621][ T348] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 48.326790][ T348] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[ 48.326956][ T348] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 48.327129][ T348] rtnl_bridge_setlink (net/core/rtnetlink.c:5225) 
[ 48.327298][ T348] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 48.327472][ T348] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 48.327636][ T348] ? 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) 
[ 48.327802][ T348] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 48.327933][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 48.328110][ T348] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 48.328279][ T348] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 48.328448][ T348] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 48.328630][ T348] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 48.328799][ T348] ? 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) 
[ 48.328967][ T348] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 48.329140][ T348] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 48.329312][ T348] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 48.329485][ T348] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 48.329658][ T348] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 48.329822][ T348] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 48.329995][ T348] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 48.330173][ T348] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 48.330351][ T348] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 48.330516][ T348] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 48.330722][ T348] ? 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) 
[ 48.330895][ T348] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3758 kernel/locking/lockdep.c:3781 kernel/locking/lockdep.c:3836) 
[ 48.331069][ T348] ___sys_sendmsg (net/socket.c:2653) 
[ 48.331233][ T348] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 48.331408][ T348] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 48.331578][ T348] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 48.331761][ T348] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 48.331931][ T348] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 48.332096][ T348] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 48.332266][ T348] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 48.332441][ T348] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 48.332609][ T348] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 48.332797][ T348] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 48.332965][ T348] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   48.333174][  T348] RIP: 0033:0x7f6025f6c7b7
[ 48.333352][ T348] 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)
[   48.333931][  T348] RSP: 002b:00007fff28bac018 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   48.334181][  T348] RAX: ffffffffffffffda RBX: 000000000000ffff RCX: 00007f6025f6c7b7
[   48.334436][  T348] RDX: 0000000000000000 RSI: 00007fff28bac080 RDI: 0000000000000005
[   48.334709][  T348] RBP: 00007fff28bac170 R08: 0000000000000034 R09: 0000000000000000
[   48.334980][  T348] R10: 00007f6025e25708 R11: 0000000000000246 R12: 0000000000000001


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