======================================
| [   11.032026][  T224] softirqs last disabled at (15082): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   11.032028][  T224] Preemption disabled at:
| [   11.032029][  T224] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.032037][  T224] Tainted: [W]=WARN
[   11.032038][  T224] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.032039][  T224] Call Trace:
[   11.032041][  T224]  <TASK>
[   11.032042][  T224]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.032048][  T224]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.032050][  T224]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.032054][  T224]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.032058][  T224]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.032063][  T224]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   11.032065][  T224]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.032072][  T224]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   11.032074][  T224]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.032078][  T224]  put_chars (drivers/char/virtio_console.c:1176)
[   11.032080][  T224]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.032087][  T224]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.032094][  T224]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.032097][  T224]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.032102][  T224]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.032105][  T224]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.032107][  T224]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   11.032110][  T224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.032113][  T224]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.032117][  T224]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.032121][  T224]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.032123][  T224]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.032128][  T224]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.032131][  T224]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.032133][  T224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.032135][  T224]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   11.032138][  T224]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.032140][  T224]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.032143][  T224]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.032146][  T224]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.032148][  T224]  ? save_trace (kernel/locking/lockdep.c:589)
[   11.032152][  T224]  _printk (kernel/printk/printk.c:2504)
[   11.032156][  T224]  ? snapshot_read.cold (user.c:?)
[   11.032159][  T224]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.032161][  T224]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   11.032165][  T224]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   11.032168][  T224]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.032170][  T224]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   11.032173][  T224]  ? netdev_notice (net/core/dev.c:13194)
[   11.032175][  T224]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.032178][  T224]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.032181][  T224]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.032184][  T224]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.032186][  T224]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   11.032188][  T224]  ? is_bpf_text_address (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) kernel/bpf/core.c:751 (discriminator 2))
[   11.032194][  T224]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   11.032196][  T224]  ? __kernel_text_address (kernel/extable.c:79)
[   11.032199][  T224]  ? write_profile (profile.c:?)
[   11.032203][  T224]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   11.032208][  T224]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.032211][  T224]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   11.032214][  T224]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   11.032215][  T224]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   11.032218][  T224]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   11.032221][  T224]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.032223][  T224]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.032225][  T224]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.032227][  T224]  ? kasan_save_stack (mm/kasan/common.c:58)
[   11.032229][  T224]  ? kasan_save_stack (mm/kasan/common.c:57)
[   11.032230][  T224]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.032231][  T224]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   11.032234][  T224]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.032235][  T224]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   11.032238][  T224]  ? ___sys_sendmsg (net/socket.c:2758)
[   11.032242][  T224]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.032244][  T224]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.032247][  T224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.032248][  T224]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.032250][  T224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.032251][  T224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.032253][  T224]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   11.032255][  T224]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   11.032258][  T224]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   11.032259][  T224]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.032263][  T224]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   11.032264][  T224]  ? nla_get_range_signed (lib/nlattr.c:270)
[   11.032269][  T224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.032271][  T224]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   11.032276][  T224]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.032281][  T224]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.032283][  T224]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.032287][  T224]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.032289][  T224]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.032291][  T224]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.032293][  T224]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.032299][  T224]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.032305][  T224]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.032309][  T224]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.032310][  T224]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.032315][  T224]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.032317][  T224]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.032321][  T224]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   11.032324][  T224]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.032327][  T224]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   11.032334][  T224]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   11.032336][  T224]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   11.032341][  T224]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   11.032345][  T224]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.032347][  T224]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.032352][  T224]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   11.032356][  T224]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   11.032360][  T224]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.032362][  T224]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   11.032367][  T224]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   11.032370][  T224]  ____sys_sendmsg (net/socket.c:2713)
[   11.032372][  T224]  ? copy_msghdr_from_user (net/socket.c:2650)
[   11.032374][  T224]  ? sock_write_iter (net/socket.c:1269)
[   11.032376][  T224]  ? move_addr_to_kernel (net/socket.c:258)
[   11.032383][  T224]  ___sys_sendmsg (net/socket.c:2767)
[   11.032386][  T224]  ? copy_msghdr_from_user (net/socket.c:2619)
[   11.032402][  T224]  __sys_sendmsg (net/socket.c:2799)
[   11.032404][  T224]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   11.032410][  T224]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.032413][  T224]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.032416][  T224]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.032419][  T224]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.032421][  T224] RIP: 0033:0x7f54bac8654e
[   11.032425][  T224] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   11.032427][  T224] RSP: 002b:00007ffc64b9db60 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   11.032429][  T224] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f54bac8654e
[   11.032430][  T224] RDX: 0000000000000000 RSI: 00007ffc64b9dc10 RDI: 0000000000000005
[   11.032431][  T224] RBP: 00007ffc64b9db70 R08: 0000000000000000 R09: 0000000000000000
[   11.032432][  T224] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a910c15
[   11.032433][  T224] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc64b9e2e0
| [   12.150273][  T267] softirqs last disabled at (17314): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   12.150275][  T267] Preemption disabled at:
| [   12.150276][  T267] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.150285][  T267] Tainted: [W]=WARN
[   12.150285][  T267] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.150287][  T267] Call Trace:
[   12.150289][  T267]  <TASK>
[   12.150290][  T267]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.150297][  T267]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.150298][  T267]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.150303][  T267]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.150312][  T267]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.150316][  T267]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   12.150318][  T267]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.150324][  T267]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   12.150326][  T267]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.150330][  T267]  put_chars (drivers/char/virtio_console.c:1176)
[   12.150333][  T267]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.150334][  T267]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.150338][  T267]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.150343][  T267]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.150350][  T267]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.150353][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.150355][  T267]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.150359][  T267]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.150363][  T267]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.150364][  T267]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   12.150368][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.150369][  T267]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.150373][  T267]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.150377][  T267]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.150379][  T267]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.150384][  T267]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.150387][  T267]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.150389][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.150391][  T267]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   12.150394][  T267]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.150396][  T267]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.150399][  T267]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.150402][  T267]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.150403][  T267]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.150406][  T267]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.150410][  T267]  _printk (kernel/printk/printk.c:2504)
[   12.150413][  T267]  ? snapshot_read.cold (user.c:?)
[   12.150417][  T267]  ? br_multicast_flood (??:?)
[   12.150420][  T267]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.150421][  T267]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.150423][  T267]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.150427][  T267]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   12.150431][  T267]  br_init_port (net/bridge/br_stp_if.c:39)
[   12.150433][  T267]  new_nbp (net/bridge/br_if.c:449)
[   12.150437][  T267]  br_add_if (net/bridge/br_if.c:592)
[   12.150439][  T267]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   12.150443][  T267]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   12.150448][  T267]  do_set_master (net/core/rtnetlink.c:3071)
[   12.150452][  T267]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.150455][  T267]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.150458][  T267]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.150460][  T267]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.150462][  T267]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.150465][  T267]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.150467][  T267]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.150469][  T267]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.150471][  T267]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.150474][  T267]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.150475][  T267]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.150476][  T267]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   12.150478][  T267]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.150480][  T267]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   12.150483][  T267]  ? ___sys_sendmsg (net/socket.c:2758)
[   12.150487][  T267]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.150489][  T267]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.150491][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.150493][  T267]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.150495][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.150496][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.150497][  T267]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.150500][  T267]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   12.150502][  T267]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.150504][  T267]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.150507][  T267]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.150508][  T267]  ? nla_get_range_signed (lib/nlattr.c:270)
[   12.150513][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.150516][  T267]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.150521][  T267]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.150526][  T267]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.150528][  T267]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.150532][  T267]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.150534][  T267]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.150536][  T267]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.150538][  T267]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.150541][  T267]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.150543][  T267]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.150546][  T267]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.150548][  T267]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.150552][  T267]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.150554][  T267]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.150557][  T267]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.150560][  T267]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.150563][  T267]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.150569][  T267]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   12.150572][  T267]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   12.150576][  T267]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.150580][  T267]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.150582][  T267]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.150586][  T267]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.150590][  T267]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.150594][  T267]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.150596][  T267]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   12.150601][  T267]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   12.150604][  T267]  ____sys_sendmsg (net/socket.c:2713)
[   12.150606][  T267]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.150608][  T267]  ? sock_write_iter (net/socket.c:1269)
[   12.150610][  T267]  ? move_addr_to_kernel (net/socket.c:258)
[   12.150617][  T267]  ___sys_sendmsg (net/socket.c:2767)
[   12.150620][  T267]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.150635][  T267]  __sys_sendmsg (net/socket.c:2799)
[   12.150638][  T267]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.150644][  T267]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.150647][  T267]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.150650][  T267]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.150653][  T267]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.150655][  T267] RIP: 0033:0x7f3f89f9754e
[   12.150659][  T267] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   12.150661][  T267] RSP: 002b:00007ffd743cc510 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.150663][  T267] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3f89f9754e
[   12.150665][  T267] RDX: 0000000000000000 RSI: 00007ffd743cc5c0 RDI: 0000000000000005
[   12.150665][  T267] RBP: 00007ffd743cc520 R08: 0000000000000000 R09: 0000000000000000
[   12.150666][  T267] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a910c16
[   12.150667][  T267] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd743ccc90
| [   13.479872][   T69] softirqs last disabled at (8071): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   13.479874][   T69] Preemption disabled at:
| [   13.479875][   T69] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.479883][   T69] Tainted: [W]=WARN
[   13.479884][   T69] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.479886][   T69] Workqueue: netns cleanup_net
[   13.479889][   T69] Call Trace:
[   13.479891][   T69]  <TASK>
[   13.479893][   T69]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.479899][   T69]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.479900][   T69]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.479905][   T69]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.479910][   T69]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.479914][   T69]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   13.479916][   T69]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.479923][   T69]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   13.479926][   T69]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.479930][   T69]  put_chars (drivers/char/virtio_console.c:1176)
[   13.479932][   T69]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.479935][   T69]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   13.479940][   T69]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.479944][   T69]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.479950][   T69]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.479953][   T69]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.479958][   T69]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.479962][   T69]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.479964][   T69]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   13.479968][   T69]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.479969][   T69]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.479974][   T69]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.479978][   T69]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.479980][   T69]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.479985][   T69]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.479988][   T69]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.479990][   T69]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.479992][   T69]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   13.479996][   T69]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.479998][   T69]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.480001][   T69]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.480004][   T69]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.480005][   T69]  ? cleanup_net (net/core/net_namespace.c:706)
[   13.480007][   T69]  ? worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   13.480009][   T69]  ? kthread (kernel/kthread.c:436)
[   13.480011][   T69]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[   13.480014][   T69]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   13.480019][   T69]  _printk (kernel/printk/printk.c:2504)
[   13.480022][   T69]  ? snapshot_read.cold (user.c:?)
[   13.480027][   T69]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   13.480030][   T69]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   13.480034][   T69]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   13.480037][   T69]  ? netdev_notice (net/core/dev.c:13194)
[   13.480042][   T69]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.480043][   T69]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   13.480046][   T69]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   13.480048][   T69]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   13.480050][   T69]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   13.480055][   T69]  dev_set_allmulti (net/core/dev_api.c:315)
[   13.480058][   T69]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   13.480065][   T69]  br_dev_delete (net/bridge/br_if.c:387)
[   13.480069][   T69]  br_net_exit_rtnl (net/bridge/br.c:414)
[   13.480072][   T69]  ops_undo_list (net/core/net_namespace.c:181 net/core/net_namespace.c:249)
[   13.480076][   T69]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   13.480079][   T69]  ? netns_install (./include/linux/ns_common.h:26)
[   13.480081][   T69]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.480084][   T69]  ? idr_destroy (lib/radix-tree.c:310 lib/radix-tree.c:674 lib/radix-tree.c:1563)
[   13.480089][   T69]  cleanup_net (net/core/net_namespace.c:706)
[   13.480092][   T69]  ? net_passive_dec (./include/linux/llist.h:241)
[   13.480096][   T69]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.480098][   T69]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.480102][   T69]  process_one_work (kernel/workqueue.c:3387)
[   13.480108][   T69]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   13.480111][   T69]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.480119][   T69]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   13.480123][   T69]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   13.480125][   T69]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   13.480128][   T69]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   13.480131][   T69]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   13.480133][   T69]  kthread (kernel/kthread.c:436)
[   13.480135][   T69]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   13.480138][   T69]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   13.480141][   T69]  ret_from_fork (arch/x86/kernel/process.c:158)
[   13.480144][   T69]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   13.480147][   T69]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   13.480151][   T69]  ? kthread_affine_preferred (kernel/kthread.c:857)


Finger prints:
__irq_exit_rcu:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
netif_change_name:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars