======================================
| [   11.396856][  T225] softirqs last disabled at (12548): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   11.396859][  T225] Preemption disabled at:
| [   11.396859][  T225] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.396868][  T225] Tainted: [W]=WARN
[   11.396869][  T225] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.396871][  T225] Call Trace:
[   11.396872][  T225]  <TASK>
[   11.396874][  T225]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.396880][  T225]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.396881][  T225]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.396886][  T225]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.396890][  T225]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.396895][  T225]  __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))
[   11.396897][  T225]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.396904][  T225]  ? 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)
[   11.396907][  T225]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.396911][  T225]  put_chars (drivers/char/virtio_console.c:1176)
[   11.396913][  T225]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.396920][  T225]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.396927][  T225]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.396931][  T225]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.396935][  T225]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.396939][  T225]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.396941][  T225]  ? 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))
[   11.396944][  T225]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.396947][  T225]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.396957][  T225]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.396961][  T225]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.396963][  T225]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.396968][  T225]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.396971][  T225]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.396973][  T225]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.396975][  T225]  ? 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)
[   11.396979][  T225]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.396980][  T225]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.396983][  T225]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.396986][  T225]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.396988][  T225]  ? save_trace (kernel/locking/lockdep.c:589)
[   11.396993][  T225]  _printk (kernel/printk/printk.c:2504)
[   11.396996][  T225]  ? snapshot_read.cold (user.c:?)
[   11.397000][  T225]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.397002][  T225]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   11.397006][  T225]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   11.397008][  T225]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.397011][  T225]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   11.397014][  T225]  ? netdev_notice (net/core/dev.c:13194)
[   11.397016][  T225]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.397019][  T225]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.397022][  T225]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.397025][  T225]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.397028][  T225]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   11.397030][  T225]  ? 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))
[   11.397035][  T225]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   11.397038][  T225]  ? __kernel_text_address (kernel/extable.c:79)
[   11.397040][  T225]  ? write_profile (profile.c:?)
[   11.397044][  T225]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   11.397050][  T225]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.397053][  T225]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   11.397055][  T225]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   11.397057][  T225]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   11.397060][  T225]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   11.397063][  T225]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.397065][  T225]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.397067][  T225]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.397070][  T225]  ? kasan_save_stack (mm/kasan/common.c:58)
[   11.397072][  T225]  ? kasan_save_stack (mm/kasan/common.c:57)
[   11.397073][  T225]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.397074][  T225]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   11.397077][  T225]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.397078][  T225]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   11.397082][  T225]  ? ___sys_sendmsg (net/socket.c:2758)
[   11.397086][  T225]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.397088][  T225]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.397090][  T225]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.397092][  T225]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.397094][  T225]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.397095][  T225]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.397096][  T225]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   11.397099][  T225]  ? __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)
[   11.397101][  T225]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   11.397103][  T225]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.397107][  T225]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   11.397108][  T225]  ? nla_get_range_signed (lib/nlattr.c:270)
[   11.397113][  T225]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.397115][  T225]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   11.397120][  T225]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.397126][  T225]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.397128][  T225]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.397132][  T225]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.397134][  T225]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.397136][  T225]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.397138][  T225]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.397142][  T225]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.397144][  T225]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.397147][  T225]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.397148][  T225]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.397153][  T225]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.397155][  T225]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.397158][  T225]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   11.397161][  T225]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.397164][  T225]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   11.397171][  T225]  ? 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))
[   11.397175][  T225]  ? 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))
[   11.397180][  T225]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   11.397184][  T225]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.397186][  T225]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.397191][  T225]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   11.397194][  T225]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   11.397198][  T225]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.397200][  T225]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   11.397205][  T225]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   11.397208][  T225]  ____sys_sendmsg (net/socket.c:2713)
[   11.397211][  T225]  ? copy_msghdr_from_user (net/socket.c:2650)
[   11.397213][  T225]  ? sock_write_iter (net/socket.c:1269)
[   11.397214][  T225]  ? move_addr_to_kernel (net/socket.c:258)
[   11.397222][  T225]  ___sys_sendmsg (net/socket.c:2767)
[   11.397225][  T225]  ? copy_msghdr_from_user (net/socket.c:2619)
[   11.397241][  T225]  __sys_sendmsg (net/socket.c:2799)
[   11.397244][  T225]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   11.397250][  T225]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.397253][  T225]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.397256][  T225]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.397259][  T225]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.397261][  T225] RIP: 0033:0x7f419bcd854e
[   11.397265][  T225] 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
[   11.397267][  T225] RSP: 002b:00007ffd034edfc0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   11.397269][  T225] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f419bcd854e
[   11.397271][  T225] RDX: 0000000000000000 RSI: 00007ffd034ee070 RDI: 0000000000000005
[   11.397272][  T225] RBP: 00007ffd034edfd0 R08: 0000000000000000 R09: 0000000000000000
[   11.397272][  T225] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a916197
[   11.397273][  T225] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd034ee740
| [   12.499916][  T270] softirqs last disabled at (25402): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   12.499918][  T270] Preemption disabled at:
| [   12.499919][  T270] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.499928][  T270] Tainted: [W]=WARN
[   12.499929][  T270] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.499930][  T270] Call Trace:
[   12.499932][  T270]  <TASK>
[   12.499934][  T270]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.499939][  T270]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.499941][  T270]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.499945][  T270]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.499950][  T270]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.499958][  T270]  __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))
[   12.499960][  T270]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.499967][  T270]  ? 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)
[   12.499970][  T270]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.499974][  T270]  put_chars (drivers/char/virtio_console.c:1176)
[   12.499976][  T270]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.499977][  T270]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.499981][  T270]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.499987][  T270]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.499994][  T270]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.499997][  T270]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.499999][  T270]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.500003][  T270]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.500008][  T270]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.500010][  T270]  ? 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))
[   12.500013][  T270]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.500015][  T270]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.500019][  T270]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.500023][  T270]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.500025][  T270]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.500030][  T270]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.500033][  T270]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.500035][  T270]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.500037][  T270]  ? 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)
[   12.500041][  T270]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.500043][  T270]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.500045][  T270]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.500048][  T270]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.500050][  T270]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.500053][  T270]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.500057][  T270]  _printk (kernel/printk/printk.c:2504)
[   12.500060][  T270]  ? snapshot_read.cold (user.c:?)
[   12.500064][  T270]  ? br_multicast_flood (??:?)
[   12.500068][  T270]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.500069][  T270]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.500070][  T270]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.500075][  T270]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   12.500079][  T270]  br_init_port (net/bridge/br_stp_if.c:39)
[   12.500081][  T270]  new_nbp (net/bridge/br_if.c:449)
[   12.500085][  T270]  br_add_if (net/bridge/br_if.c:592)
[   12.500088][  T270]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   12.500091][  T270]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   12.500097][  T270]  do_set_master (net/core/rtnetlink.c:3071)
[   12.500101][  T270]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.500104][  T270]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.500107][  T270]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.500109][  T270]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.500111][  T270]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.500115][  T270]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.500117][  T270]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.500119][  T270]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.500121][  T270]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.500124][  T270]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.500125][  T270]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.500126][  T270]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   12.500129][  T270]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.500131][  T270]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   12.500134][  T270]  ? ___sys_sendmsg (net/socket.c:2758)
[   12.500138][  T270]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.500140][  T270]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.500142][  T270]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.500144][  T270]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.500146][  T270]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.500147][  T270]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.500149][  T270]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.500151][  T270]  ? __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)
[   12.500154][  T270]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.500156][  T270]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.500159][  T270]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.500160][  T270]  ? nla_get_range_signed (lib/nlattr.c:270)
[   12.500165][  T270]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.500167][  T270]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.500175][  T270]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.500181][  T270]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.500183][  T270]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.500188][  T270]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.500190][  T270]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.500192][  T270]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.500194][  T270]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.500198][  T270]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.500200][  T270]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.500203][  T270]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.500204][  T270]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.500209][  T270]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.500211][  T270]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.500214][  T270]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.500218][  T270]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.500221][  T270]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.500227][  T270]  ? 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))
[   12.500229][  T270]  ? 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))
[   12.500234][  T270]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.500238][  T270]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.500241][  T270]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.500245][  T270]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.500249][  T270]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.500253][  T270]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.500255][  T270]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   12.500260][  T270]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   12.500263][  T270]  ____sys_sendmsg (net/socket.c:2713)
[   12.500265][  T270]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.500268][  T270]  ? sock_write_iter (net/socket.c:1269)
[   12.500269][  T270]  ? move_addr_to_kernel (net/socket.c:258)
[   12.500277][  T270]  ___sys_sendmsg (net/socket.c:2767)
[   12.500280][  T270]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.500297][  T270]  __sys_sendmsg (net/socket.c:2799)
[   12.500300][  T270]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.500307][  T270]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.500310][  T270]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.500313][  T270]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.500316][  T270]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.500318][  T270] RIP: 0033:0x7f65601b854e
[   12.500322][  T270] 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
[   12.500323][  T270] RSP: 002b:00007fff80ae3c40 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.500326][  T270] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f65601b854e
[   12.500327][  T270] RDX: 0000000000000000 RSI: 00007fff80ae3cf0 RDI: 0000000000000005
[   12.500328][  T270] RBP: 00007fff80ae3c50 R08: 0000000000000000 R09: 0000000000000000
[   12.500329][  T270] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a916198
[   12.500330][  T270] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff80ae43c0
| [   13.793710][   T12] softirqs last disabled at (6376): inet6_fill_ifla6_attrs (net/ipv6/addrconf.c:5883)
| [   13.793712][   T12] Preemption disabled at:
| [   13.793713][   T12] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.793721][   T12] Tainted: [W]=WARN
[   13.793722][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.793724][   T12] Workqueue: netns cleanup_net
[   13.793727][   T12] Call Trace:
[   13.793729][   T12]  <TASK>
[   13.793731][   T12]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.793737][   T12]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.793739][   T12]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.793744][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.793748][   T12]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.793752][   T12]  __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))
[   13.793754][   T12]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.793761][   T12]  ? 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)
[   13.793764][   T12]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.793768][   T12]  put_chars (drivers/char/virtio_console.c:1176)
[   13.793771][   T12]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.793774][   T12]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   13.793779][   T12]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.793783][   T12]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.793789][   T12]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.793792][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.793798][   T12]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.793802][   T12]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.793804][   T12]  ? 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))
[   13.793807][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.793809][   T12]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.793813][   T12]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.793818][   T12]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.793820][   T12]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.793826][   T12]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.793829][   T12]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.793831][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.793833][   T12]  ? 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)
[   13.793836][   T12]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.793838][   T12]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.793841][   T12]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.793845][   T12]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.793846][   T12]  ? cleanup_net (net/core/net_namespace.c:706)
[   13.793848][   T12]  ? worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   13.793850][   T12]  ? kthread (kernel/kthread.c:436)
[   13.793852][   T12]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[   13.793856][   T12]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[   13.793861][   T12]  _printk (kernel/printk/printk.c:2504)
[   13.793864][   T12]  ? snapshot_read.cold (user.c:?)
[   13.793869][   T12]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   13.793873][   T12]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   13.793877][   T12]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   13.793880][   T12]  ? netdev_notice (net/core/dev.c:13194)
[   13.793885][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.793887][   T12]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   13.793889][   T12]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   13.793891][   T12]  ? 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)
[   13.793894][   T12]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   13.793898][   T12]  dev_set_allmulti (net/core/dev_api.c:315)
[   13.793902][   T12]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   13.793908][   T12]  br_dev_delete (net/bridge/br_if.c:387)
[   13.793912][   T12]  br_net_exit_rtnl (net/bridge/br.c:414)
[   13.793915][   T12]  ops_undo_list (net/core/net_namespace.c:181 net/core/net_namespace.c:249)
[   13.793919][   T12]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   13.793923][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[   13.793925][   T12]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.793928][   T12]  ? idr_destroy (lib/radix-tree.c:310 lib/radix-tree.c:674 lib/radix-tree.c:1563)
[   13.793933][   T12]  cleanup_net (net/core/net_namespace.c:706)
[   13.793936][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[   13.793940][   T12]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.793942][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.793945][   T12]  process_one_work (kernel/workqueue.c:3387)
[   13.793952][   T12]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   13.793956][   T12]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.793968][   T12]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   13.793975][   T12]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   13.793978][   T12]  kthread (kernel/kthread.c:436)
[   13.793979][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   13.793983][   T12]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   13.793986][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[   13.793989][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   13.793992][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   13.793996][   T12]  ? kthread_affine_preferred (kernel/kthread.c:857)


Finger prints:
inet6_fill_ifla6_attrs: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