======================================
| [   35.330203][  T300] 1 lock held by bridge/300:
| [ 35.330406][ T300] #0: ffffffffb2ddcac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   35.330842][  T300]
| [   35.330842][  T300] stack backtrace:
[   35.331313][  T300] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.331674][  T300] Call Trace:
[   35.331805][  T300]  <TASK>
[ 35.331894][ T300] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.332071][ T300] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.332249][ T300] br_get_link_af_size_filtered (net/bridge/br_private.h:1605 net/bridge/br_private.h:1602 net/bridge/br_netlink.c:110) 
[ 35.332465][ T300] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) 
[ 35.332636][ T300] br_setlink (net/bridge/br_netlink.c:669 net/bridge/br_netlink.c:1136) 
[ 35.332764][ T300] ? __pfx_br_setlink (net/bridge/br_netlink.c:1085) 
[ 35.332937][ T300] ? lock_acquire.part.0 (kernel/locking/lockdep.c:466 kernel/locking/lockdep.c:5761) 
[ 35.333103][ T300] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 35.333271][ T300] ? 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) 
[ 35.333446][ T300] ? __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) 
[ 35.333612][ T300] ? __pfx___mutex_trylock_common (kernel/locking/mutex.c:104) 
[ 35.333821][ T300] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 35.333987][ T300] ? lock_acquire (kernel/locking/lockdep.c:5732) 
[ 35.334154][ T300] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) 
[ 35.334322][ T300] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) 
[ 35.334491][ T300] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.334659][ T300] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
[ 35.334828][ T300] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) 
[ 35.334993][ T300] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.335158][ T300] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5724) 
[ 35.335327][ T300] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 35.335502][ T300] rtnl_bridge_setlink (net/core/rtnetlink.c:5225) 
[ 35.335675][ T300] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.335842][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.336028][ T300] ? 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) 
[ 35.336200][ T300] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.336331][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.336500][ T300] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.336668][ T300] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.336839][ T300] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.337019][ T300] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.337199][ T300] ? 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) 
[ 35.337367][ T300] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.337543][ T300] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.337709][ T300] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.337881][ T300] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.338051][ T300] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.338215][ T300] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.338385][ T300] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.338559][ T300] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.338740][ T300] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.338905][ T300] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.339109][ T300] ? 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) 
[ 35.339279][ T300] ? validate_chain (./include/linux/hash.h:78 kernel/locking/lockdep.c:3758 kernel/locking/lockdep.c:3781 kernel/locking/lockdep.c:3836) 
[ 35.339448][ T300] ___sys_sendmsg (net/socket.c:2653) 
[ 35.339610][ T300] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.339777][ T300] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.339945][ T300] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.340120][ T300] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.340290][ T300] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.340457][ T300] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.340619][ T300] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) 
[ 35.340787][ T300] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.340951][ T300] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.341136][ T300] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.341322][ T300] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.341530][  T300] RIP: 0033:0x7f024d7927b7
[ 35.341702][ T300] 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)
[   35.342283][  T300] RSP: 002b:00007ffd7451afa8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.342537][  T300] RAX: ffffffffffffffda RBX: 000000000000ffff RCX: 00007f024d7927b7
[   35.342906][  T300] RDX: 0000000000000000 RSI: 00007ffd7451b010 RDI: 0000000000000005
[   35.343259][  T300] RBP: 00007ffd7451b100 R08: 0000000000000034 R09: 0000000000000000
[   35.343612][  T300] R10: 00007f024d64b708 R11: 0000000000000246 R12: 000000000000000a
[   35.343964][  T300] R13: 0000000066beb18d R14: 0000000000423360 R15: 00007ffd7451b6c0
| [   35.840344][  T303] 1 lock held by ip/303:
| [ 35.840466][ T303] #0: ffffffffb2ddcac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   35.840766][  T303]
| [   35.840766][  T303] stack backtrace:
[   35.841203][  T303] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.841558][  T303] Call Trace:
[   35.841686][  T303]  <TASK>
[ 35.841771][ T303] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.841939][ T303] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.842100][ T303] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) 
[ 35.842275][ T303] br_get_link_af_size_filtered (net/bridge/br_private.h:930 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) 
[ 35.842478][ T303] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) 
[ 35.842632][ T303] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.842829][ T303] br_add_if (net/bridge/br_if.c:692) 
[ 35.842953][ T303] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 35.843115][ T303] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 35.843314][ T303] do_setlink (net/core/rtnetlink.c:2907) 
[ 35.843472][ T303] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 35.843633][ T303] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 35.843792][ T303] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 35.843950][ T303] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.844110][ T303] ? __kernel_text_address (kernel/extable.c:79) 
[ 35.844276][ T303] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 35.844434][ T303] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 35.844630][ T303] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.844798][ T303] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.844958][ T303] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.845114][ T303] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 35.845274][ T303] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.845397][ T303] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 35.845571][ T303] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 35.845736][ T303] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 35.845909][ T303] ? 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) 
[ 35.846078][ T303] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 35.846241][ T303] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.846437][ T303] ? __create_object (mm/kmemleak.c:751) 
[ 35.846594][ T303] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.846757][ T303] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 35.846877][ T303] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.847044][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.847200][ T303] ? 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) 
[ 35.847357][ T303] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.847481][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.847641][ T303] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.847798][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.847955][ T303] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.848125][ T303] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.848289][ T303] ? 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) 
[ 35.848447][ T303] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.848606][ T303] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.848761][ T303] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.848923][ T303] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.849085][ T303] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.849243][ T303] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.849408][ T303] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.849574][ T303] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.849738][ T303] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.849894][ T303] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.850089][ T303] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.850255][ T303] ___sys_sendmsg (net/socket.c:2653) 
[ 35.850417][ T303] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.850576][ T303] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.850734][ T303] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.850892][ T303] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 35.851086][ T303] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.851245][ T303] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.851407][ T303] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.851605][ T303] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.851770][ T303] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.851925][ T303] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.852080][ T303] ? __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) 
[ 35.852269][ T303] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.852429][ T303] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.852628][  T303] RIP: 0033:0x7fd7f17ce7b7
[ 35.852792][ T303] 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)
[   35.853339][  T303] RSP: 002b:00007ffc05d2a548 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.853586][  T303] RAX: ffffffffffffffda RBX: 00007ffc05d2ac80 RCX: 00007fd7f17ce7b7
[   35.853820][  T303] RDX: 0000000000000000 RSI: 00007ffc05d2a5b0 RDI: 0000000000000005
[   35.854052][  T303] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[   35.854288][  T303] R10: 000000000863a910 R11: 0000000000000246 R12: 0000000000000005
[   35.854524][  T303] R13: 0000000066beb18d R14: 0000000000496600 R15: 0000000000000000
| [   35.856418][  T303] 1 lock held by ip/303:
| [ 35.856538][ T303] #0: ffffffffb2ddcac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   35.856823][  T303]
| [   35.856823][  T303] stack backtrace:
[   35.857250][  T303] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.857588][  T303] Call Trace:
[   35.857710][  T303]  <TASK>
[ 35.857795][ T303] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.857955][ T303] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.858110][ T303] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) 
[ 35.858275][ T303] br_get_link_af_size_filtered (net/bridge/br_private.h:453 net/bridge/br_private.h:940 net/bridge/br_netlink.c:105) 
[ 35.858477][ T303] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) 
[ 35.858638][ T303] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.858835][ T303] br_add_if (net/bridge/br_if.c:692) 
[ 35.858957][ T303] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 35.859113][ T303] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 35.859312][ T303] do_setlink (net/core/rtnetlink.c:2907) 
[ 35.859470][ T303] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 35.859629][ T303] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 35.859788][ T303] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 35.860070][ T303] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.860236][ T303] ? __kernel_text_address (kernel/extable.c:79) 
[ 35.860391][ T303] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 35.860545][ T303] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 35.860825][ T303] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.860994][ T303] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.861154][ T303] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.861309][ T303] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 35.861552][ T303] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.861673][ T303] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 35.861830][ T303] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 35.861993][ T303] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 35.862159][ T303] ? 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) 
[ 35.862402][ T303] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 35.862568][ T303] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.862762][ T303] ? __create_object (mm/kmemleak.c:751) 
[ 35.862970][ T303] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.863221][ T303] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 35.863341][ T303] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.863501][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.863655][ T303] ? 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) 
[ 35.863894][ T303] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.864029][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.864188][ T303] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.864343][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.864501][ T303] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.864762][ T303] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.864917][ T303] ? 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) 
[ 35.865074][ T303] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.865233][ T303] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.865478][ T303] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.865638][ T303] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.865800][ T303] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.865959][ T303] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.866218][ T303] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.866381][ T303] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.866537][ T303] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.866690][ T303] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.866890][ T303] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.867056][ T303] ___sys_sendmsg (net/socket.c:2653) 
[ 35.867214][ T303] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.867371][ T303] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.867620][ T303] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.867774][ T303] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 35.867966][ T303] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.868128][ T303] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.868381][ T303] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.868577][ T303] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.868741][ T303] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.868896][ T303] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.869140][ T303] ? __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) 
[ 35.869319][ T303] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.869482][ T303] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.869672][  T303] RIP: 0033:0x7fd7f17ce7b7
[ 35.869839][ T303] 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)
[   35.870395][  T303] RSP: 002b:00007ffc05d2a548 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.870806][  T303] RAX: ffffffffffffffda RBX: 00007ffc05d2ac80 RCX: 00007fd7f17ce7b7
[   35.871036][  T303] RDX: 0000000000000000 RSI: 00007ffc05d2a5b0 RDI: 0000000000000005
[   35.871270][  T303] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[   35.871592][  T303] R10: 000000000863a910 R11: 0000000000000246 R12: 0000000000000005
[   35.871823][  T303] R13: 0000000066beb18d R14: 0000000000496600 R15: 0000000000000000
| [   35.873858][  T303] 1 lock held by ip/303:
| [ 35.873975][ T303] #0: ffffffffb2ddcac8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg (net/core/rtnetlink.c:6645) 
| [   35.874356][  T303]
| [   35.874356][  T303] stack backtrace:
[   35.874776][  T303] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
[   35.875214][  T303] Call Trace:
[   35.875333][  T303]  <TASK>
[ 35.875416][ T303] dump_stack_lvl (lib/dump_stack.c:122) 
[ 35.875574][ T303] lockdep_rcu_suspicious (./include/linux/context_tracking.h:153 kernel/locking/lockdep.c:6725) 
[ 35.875728][ T303] ? __pfx_br_handle_frame (net/bridge/br_input.c:326) 
[ 35.875889][ T303] br_get_link_af_size_filtered (net/bridge/br_private.h:1611 net/bridge/br_private.h:1608 net/bridge/br_netlink.c:107) 
[ 35.876106][ T303] br_info_notify (./include/linux/skbuff.h:1320 ./include/net/netlink.h:1015 net/bridge/br_netlink.c:645) 
[ 35.876260][ T303] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.876459][ T303] br_add_if (net/bridge/br_if.c:692) 
[ 35.876671][ T303] ? rtnl_is_locked (net/core/rtnetlink.c:164) 
[ 35.876824][ T303] ? netdev_master_upper_dev_get (net/core/dev.c:7102) 
[ 35.877019][ T303] do_setlink (net/core/rtnetlink.c:2907) 
[ 35.877178][ T303] ? is_bpf_text_address (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 ./kernel/bpf/core.c:769) 
[ 35.877423][ T303] ? __pfx_do_setlink (net/core/rtnetlink.c:2778) 
[ 35.877579][ T303] ? is_bpf_text_address (./kernel/bpf/core.c:772) 
[ 35.877733][ T303] ? kernel_text_address (kernel/extable.c:97 kernel/extable.c:94) 
[ 35.877892][ T303] ? __kernel_text_address (kernel/extable.c:79) 
[ 35.878135][ T303] ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:369 arch/x86/kernel/unwind_orc.c:364) 
[ 35.878297][ T303] ? __pfx_stack_trace_consume_entry (kernel/stacktrace.c:83) 
[ 35.878491][ T303] ? arch_stack_walk (arch/x86/kernel/stacktrace.c:26) 
[ 35.878658][ T303] ? stack_trace_save (kernel/stacktrace.c:123) 
[ 35.878901][ T303] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) 
[ 35.879056][ T303] ? __pfx_validate_nla (lib/nlattr.c:396) 
[ 35.879212][ T303] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.879337][ T303] ? kasan_save_stack (mm/kasan/common.c:49) 
[ 35.879499][ T303] ? __nla_validate_parse (lib/nlattr.c:638) 
[ 35.879749][ T303] __rtnl_newlink (net/core/rtnetlink.c:3696) 
[ 35.879910][ T303] ? 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) 
[ 35.880071][ T303] ? __pfx___rtnl_newlink (net/core/rtnetlink.c:3557) 
[ 35.880231][ T303] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.880516][ T303] ? __create_object (mm/kmemleak.c:751) 
[ 35.880820][ T303] ? trace_kmalloc (./include/trace/events/kmem.h:54 (discriminator 52)) 
[ 35.880985][ T303] rtnl_newlink (net/core/rtnetlink.c:3744) 
[ 35.881105][ T303] rtnetlink_rcv_msg (net/core/rtnetlink.c:6647) 
[ 35.881352][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.881507][ T303] ? 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) 
[ 35.881662][ T303] ? mark_lock (kernel/locking/lockdep.c:4655 (discriminator 3)) 
[ 35.881785][ T303] ? __lock_acquire (kernel/locking/lockdep.c:5142) 
[ 35.881947][ T303] netlink_rcv_skb (net/netlink/af_netlink.c:2550) 
[ 35.882190][ T303] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6541) 
[ 35.882347][ T303] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2527) 
[ 35.882521][ T303] ? netlink_deliver_tap (./include/linux/rcupdate.h:336 ./include/linux/rcupdate.h:869 net/netlink/af_netlink.c:340) 
[ 35.882677][ T303] ? 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) 
[ 35.883005][ T303] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) 
[ 35.883163][ T303] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) 
[ 35.883333][ T303] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.883492][ T303] netlink_sendmsg (net/netlink/af_netlink.c:1901) 
[ 35.883737][ T303] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) 
[ 35.883895][ T303] ? __might_fault (mm/memory.c:6388 mm/memory.c:6381) 
[ 35.884052][ T303] ? __import_iovec (lib/iov_iter.c:1263 lib/iov_iter.c:1279) 
[ 35.884214][ T303] ____sys_sendmsg (net/socket.c:730 net/socket.c:745 net/socket.c:2597) 
[ 35.884460][ T303] ? __pfx_____sys_sendmsg (net/socket.c:2543) 
[ 35.884614][ T303] ? __pfx_copy_msghdr_from_user (net/socket.c:2523) 
[ 35.884804][ T303] ? __pfx_validate_chain (kernel/locking/lockdep.c:3824) 
[ 35.884969][ T303] ___sys_sendmsg (net/socket.c:2653) 
[ 35.885238][ T303] ? __pfx____sys_sendmsg (net/socket.c:2640) 
[ 35.885399][ T303] ? find_held_lock (kernel/locking/lockdep.c:5249) 
[ 35.885557][ T303] ? __lock_release (kernel/locking/lockdep.c:5435) 
[ 35.885714][ T303] ? __debug_check_no_obj_freed (lib/debugobjects.c:1001) 
[ 35.885909][ T303] ? __pfx___lock_release (kernel/locking/lockdep.c:5411) 
[ 35.886067][ T303] ? __pfx_do_raw_spin_lock (kernel/locking/spinlock_debug.c:114) 
[ 35.886228][ T303] ? lockdep_hardirqs_on_prepare (kernel/locking/lockdep.c:4299 kernel/locking/lockdep.c:4358) 
[ 35.886421][ T303] ? __fget_light (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1145) 
[ 35.886584][ T303] __sys_sendmsg (./include/linux/file.h:34 net/socket.c:2682) 
[ 35.886746][ T303] ? __pfx___sys_sendmsg (net/socket.c:2668) 
[ 35.886901][ T303] ? __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) 
[ 35.887075][ T303] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) 
[ 35.887234][ T303] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[   35.887515][  T303] RIP: 0033:0x7fd7f17ce7b7
[ 35.887676][ T303] 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)
[   35.888314][  T303] RSP: 002b:00007ffc05d2a548 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
[   35.888547][  T303] RAX: ffffffffffffffda RBX: 00007ffc05d2ac80 RCX: 00007fd7f17ce7b7
[   35.888866][  T303] RDX: 0000000000000000 RSI: 00007ffc05d2a5b0 RDI: 0000000000000005
[   35.889107][  T303] RBP: 0000000000000005 R08: 0000000000000003 R09: 0000000000000000
[   35.889341][  T303] R10: 000000000863a910 R11: 0000000000000246 R12: 0000000000000005


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