======================================
| [   11.055401][  T245] softirqs last disabled at (24800): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   11.055404][  T245] Preemption disabled at:
| [   11.055404][  T245] vprintk_emit (kernel/printk/printk.c:2471)
| [   11.055413][  T245] Tainted: [W]=WARN
[   11.055414][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.055416][  T245] Call Trace:
[   11.055418][  T245]  <TASK>
[   11.055419][  T245]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.055425][  T245]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   11.055426][  T245]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.055431][  T245]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.055435][  T245]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.055439][  T245]  __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))
[   11.055441][  T245]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.055447][  T245]  ? 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)
[   11.055450][  T245]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.055454][  T245]  put_chars (drivers/char/virtio_console.c:1176)
[   11.055456][  T245]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.055462][  T245]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.055470][  T245]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.055473][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.055477][  T245]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.055481][  T245]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.055483][  T245]  ? 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))
[   11.055486][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.055489][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.055492][  T245]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.055496][  T245]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.055498][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.055503][  T245]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.055506][  T245]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.055508][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.055510][  T245]  ? 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)
[   11.055513][  T245]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.055515][  T245]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.055518][  T245]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.055521][  T245]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.055523][  T245]  ? save_trace (kernel/locking/lockdep.c:589)
[   11.055527][  T245]  _printk (kernel/printk/printk.c:2504)
[   11.055530][  T245]  ? snapshot_read.cold (user.c:?)
[   11.055534][  T245]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.055536][  T245]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   11.055540][  T245]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   11.055542][  T245]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.055544][  T245]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   11.055547][  T245]  ? netdev_notice (net/core/dev.c:13194)
[   11.055550][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.055553][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.055555][  T245]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.055559][  T245]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.055561][  T245]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   11.055567][  T245]  ? register_netdev (net/core/dev.c:11618)
[   11.055569][  T245]  ? 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))
[   11.055574][  T245]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   11.055577][  T245]  ? __kernel_text_address (kernel/extable.c:79)
[   11.055579][  T245]  ? write_profile (profile.c:?)
[   11.055583][  T245]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   11.055589][  T245]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   11.055592][  T245]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   11.055594][  T245]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   11.055595][  T245]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   11.055598][  T245]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   11.055601][  T245]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.055603][  T245]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.055605][  T245]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.055607][  T245]  ? kasan_save_stack (mm/kasan/common.c:58)
[   11.055609][  T245]  ? kasan_save_stack (mm/kasan/common.c:57)
[   11.055610][  T245]  ? kasan_save_track (mm/kasan/common.c:78)
[   11.055612][  T245]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   11.055614][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.055616][  T245]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   11.055619][  T245]  ? ___sys_sendmsg (net/socket.c:2758)
[   11.055622][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.055624][  T245]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.055627][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.055629][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.055630][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.055631][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.055633][  T245]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   11.055635][  T245]  ? __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)
[   11.055638][  T245]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   11.055640][  T245]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   11.055643][  T245]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   11.055644][  T245]  ? nla_get_range_signed (lib/nlattr.c:270)
[   11.055649][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.055651][  T245]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   11.055656][  T245]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   11.055661][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.055663][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.055667][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.055669][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.055671][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.055673][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.055676][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   11.055678][  T245]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   11.055681][  T245]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.055683][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.055687][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.055689][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.055692][  T245]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   11.055696][  T245]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   11.055698][  T245]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   11.055705][  T245]  ? 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))
[   11.055707][  T245]  ? 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))
[   11.055711][  T245]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   11.055715][  T245]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   11.055717][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.055721][  T245]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   11.055725][  T245]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   11.055729][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.055731][  T245]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   11.055736][  T245]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   11.055738][  T245]  ____sys_sendmsg (net/socket.c:2713)
[   11.055741][  T245]  ? copy_msghdr_from_user (net/socket.c:2650)
[   11.055743][  T245]  ? sock_write_iter (net/socket.c:1269)
[   11.055744][  T245]  ? move_addr_to_kernel (net/socket.c:258)
[   11.055751][  T245]  ___sys_sendmsg (net/socket.c:2767)
[   11.055754][  T245]  ? copy_msghdr_from_user (net/socket.c:2619)
[   11.055769][  T245]  __sys_sendmsg (net/socket.c:2799)
[   11.055773][  T245]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   11.055779][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.055781][  T245]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.055784][  T245]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.055787][  T245]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.055789][  T245] RIP: 0033:0x7f2cbd5b954e
[   11.055793][  T245] 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
[   11.055795][  T245] RSP: 002b:00007fffdc8d7300 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   11.055797][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f2cbd5b954e
[   11.055799][  T245] RDX: 0000000000000000 RSI: 00007fffdc8d73b0 RDI: 0000000000000005
[   11.055800][  T245] RBP: 00007fffdc8d7310 R08: 0000000000000000 R09: 0000000000000000
[   11.055801][  T245] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91b04d
[   11.055801][  T245] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fffdc8d7a80
| [   13.302173][  T292] softirqs last disabled at (33670): addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3946)
| [   13.302175][  T292] Preemption disabled at:
| [   13.302176][  T292] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.302185][  T292] Tainted: [W]=WARN
[   13.302186][  T292] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.302188][  T292] Call Trace:
[   13.302189][  T292]  <TASK>
[   13.302191][  T292]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.302197][  T292]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.302199][  T292]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.302203][  T292]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.302207][  T292]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.302212][  T292]  __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))
[   13.302214][  T292]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.302220][  T292]  ? 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)
[   13.302223][  T292]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.302227][  T292]  put_chars (drivers/char/virtio_console.c:1176)
[   13.302229][  T292]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.302231][  T292]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.302234][  T292]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.302240][  T292]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.302248][  T292]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.302250][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.302252][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.302256][  T292]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.302261][  T292]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.302263][  T292]  ? 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))
[   13.302266][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.302268][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.302272][  T292]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.302276][  T292]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.302278][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.302283][  T292]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.302286][  T292]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.302288][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.302290][  T292]  ? 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)
[   13.302294][  T292]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.302296][  T292]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.302298][  T292]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.302301][  T292]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.302303][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.302305][  T292]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   13.302309][  T292]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.302313][  T292]  _printk (kernel/printk/printk.c:2504)
[   13.302317][  T292]  ? snapshot_read.cold (user.c:?)
[   13.302320][  T292]  ? br_multicast_flood (??:?)
[   13.302324][  T292]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.302325][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.302326][  T292]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.302331][  T292]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   13.302335][  T292]  br_init_port (net/bridge/br_stp_if.c:39)
[   13.302337][  T292]  new_nbp (net/bridge/br_if.c:449)
[   13.302341][  T292]  br_add_if (net/bridge/br_if.c:592)
[   13.302344][  T292]  ? sync_rcu_exp_select_cpus (./include/linux/list.h:54 (discriminator 2))
[   13.302346][  T292]  ? __netdev_upper_dev_unlink (net/core/dev.c:9096)
[   13.302349][  T292]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   13.302353][  T292]  ? cycle_netdev (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/netdevice.h:4084 drivers/net/vrf.c:998)
[   13.302358][  T292]  ? vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   13.302360][  T292]  do_set_master (net/core/rtnetlink.c:3071)
[   13.302364][  T292]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.302367][  T292]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.302371][  T292]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.302372][  T292]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.302375][  T292]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.302378][  T292]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.302380][  T292]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.302382][  T292]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.302385][  T292]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.302387][  T292]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.302388][  T292]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.302389][  T292]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   13.302392][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.302394][  T292]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   13.302397][  T292]  ? ___sys_sendmsg (net/socket.c:2758)
[   13.302401][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.302403][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.302405][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.302407][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.302408][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.302410][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.302411][  T292]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.302414][  T292]  ? __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)
[   13.302415][  T292]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.302417][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.302420][  T292]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.302422][  T292]  ? nla_get_range_signed (lib/nlattr.c:270)
[   13.302426][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.302429][  T292]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.302434][  T292]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.302439][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.302441][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.302446][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.302448][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.302450][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.302452][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.302456][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.302458][  T292]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.302461][  T292]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.302462][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.302467][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.302469][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.302473][  T292]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.302476][  T292]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.302479][  T292]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.302485][  T292]  ? 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))
[   13.302487][  T292]  ? 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))
[   13.302492][  T292]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.302496][  T292]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.302499][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.302503][  T292]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.302507][  T292]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.302511][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.302513][  T292]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   13.302518][  T292]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   13.302521][  T292]  ____sys_sendmsg (net/socket.c:2713)
[   13.302523][  T292]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.302526][  T292]  ? sock_write_iter (net/socket.c:1269)
[   13.302528][  T292]  ? move_addr_to_kernel (net/socket.c:258)
[   13.302535][  T292]  ___sys_sendmsg (net/socket.c:2767)
[   13.302538][  T292]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.302554][  T292]  __sys_sendmsg (net/socket.c:2799)
[   13.302557][  T292]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.302564][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.302572][  T292]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.302575][  T292]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.302578][  T292]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.302581][  T292] RIP: 0033:0x7f4ed37d654e
[   13.302584][  T292] 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
[   13.302586][  T292] RSP: 002b:00007ffe57d34e40 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.302589][  T292] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f4ed37d654e
[   13.302591][  T292] RDX: 0000000000000000 RSI: 00007ffe57d34ef0 RDI: 0000000000000005
[   13.302591][  T292] RBP: 00007ffe57d34e50 R08: 0000000000000000 R09: 0000000000000000
[   13.302592][  T292] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91b04f
[   13.302593][  T292] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe57d355b0
| [   19.922918][  T341] softirqs last disabled at (36472): br_stp_disable_bridge (./include/linux/spinlock.h:353 net/bridge/br_stp_if.c:73)
| [   19.922920][  T341] Preemption disabled at:
| [   19.922920][  T341] 0x0
| [   19.922930][  T341] Tainted: [W]=WARN
[   19.922931][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.922933][  T341] Call Trace:
[   19.922934][  T341]  <TASK>
[   19.922936][  T341]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.922942][  T341]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.922947][  T341]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.922951][  T341]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   19.922955][  T341]  __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))
[   19.922957][  T341]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.922964][  T341]  ? 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)
[   19.922966][  T341]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.922970][  T341]  put_chars (drivers/char/virtio_console.c:1176)
[   19.922972][  T341]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   19.922974][  T341]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.922977][  T341]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.922980][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.922983][  T341]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.922987][  T341]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.922991][  T341]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   19.922993][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.922995][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.922999][  T341]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.923001][  T341]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   19.923005][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.923007][  T341]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.923011][  T341]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.923015][  T341]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.923017][  T341]  ? 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))
[   19.923020][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.923022][  T341]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.923025][  T341]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.923030][  T341]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.923031][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.923037][  T341]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.923040][  T341]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.923041][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.923043][  T341]  ? 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)
[   19.923047][  T341]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.923048][  T341]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.923051][  T341]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.923054][  T341]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.923057][  T341]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.923059][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.923062][  T341]  _printk (kernel/printk/printk.c:2504)
[   19.923066][  T341]  ? snapshot_read.cold (user.c:?)
[   19.923073][  T341]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   19.923078][  T341]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   19.923081][  T341]  br_stp_disable_bridge (net/bridge/br_stp_if.c:76)
[   19.923084][  T341]  br_dev_stop (net/bridge/br_device.c:193)
[   19.923087][  T341]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   19.923089][  T341]  __dev_close_many (net/core/dev.c:1798)
[   19.923094][  T341]  ? netif_open (net/core/dev.c:1755)
[   19.923096][  T341]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.923098][  T341]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   19.923103][  T341]  __dev_change_flags (net/core/dev.c:1811 net/core/dev.c:9810)
[   19.923106][  T341]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   19.923109][  T341]  ? synchronize_rcu_normal (kernel/rcu/tree.c:3360)
[   19.923114][  T341]  netif_change_flags (net/core/dev.c:9877)
[   19.923118][  T341]  dev_change_flags (net/core/dev_api.c:68)
[   19.923119][  T341]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   19.923123][  T341]  cycle_netdev (drivers/net/vrf.c:1001)
[   19.923128][  T341]  vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   19.923130][  T341]  do_set_master (net/core/rtnetlink.c:3055)
[   19.923134][  T341]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   19.923137][  T341]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   19.923141][  T341]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   19.923142][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   19.923144][  T341]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   19.923147][  T341]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.923149][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.923151][  T341]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.923153][  T341]  ? kasan_save_stack (mm/kasan/common.c:58)
[   19.923155][  T341]  ? kasan_save_stack (mm/kasan/common.c:57)
[   19.923157][  T341]  ? kasan_save_track (mm/kasan/common.c:78)
[   19.923158][  T341]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   19.923160][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.923162][  T341]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   19.923165][  T341]  ? ___sys_sendmsg (net/socket.c:2758)
[   19.923169][  T341]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.923171][  T341]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.923173][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.923175][  T341]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.923177][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.923178][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.923179][  T341]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   19.923182][  T341]  ? __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)
[   19.923185][  T341]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   19.923186][  T341]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.923190][  T341]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   19.923191][  T341]  ? nla_get_range_signed (lib/nlattr.c:270)
[   19.923196][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.923198][  T341]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   19.923203][  T341]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   19.923208][  T341]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.923210][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.923215][  T341]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.923217][  T341]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.923219][  T341]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.923221][  T341]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.923224][  T341]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.923226][  T341]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   19.923230][  T341]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.923231][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.923235][  T341]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.923237][  T341]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.923241][  T341]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   19.923244][  T341]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.923247][  T341]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   19.923253][  T341]  ? 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))
[   19.923255][  T341]  ? 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))
[   19.923259][  T341]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   19.923263][  T341]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   19.923266][  T341]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.923270][  T341]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   19.923274][  T341]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   19.923278][  T341]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.923279][  T341]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   19.923285][  T341]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   19.923288][  T341]  ____sys_sendmsg (net/socket.c:2713)
[   19.923290][  T341]  ? copy_msghdr_from_user (net/socket.c:2650)
[   19.923292][  T341]  ? sock_write_iter (net/socket.c:1269)
[   19.923294][  T341]  ? move_addr_to_kernel (net/socket.c:258)
[   19.923301][  T341]  ___sys_sendmsg (net/socket.c:2767)
[   19.923304][  T341]  ? copy_msghdr_from_user (net/socket.c:2619)
[   19.923320][  T341]  __sys_sendmsg (net/socket.c:2799)
[   19.923323][  T341]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   19.923329][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.923332][  T341]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.923335][  T341]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.923338][  T341]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.923340][  T341] RIP: 0033:0x7f860b7d954e
[   19.923342][  T341] 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
[   19.923344][  T341] RSP: 002b:00007ffc88193d90 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   19.923347][  T341] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f860b7d954e
[   19.923348][  T341] RDX: 0000000000000000 RSI: 00007ffc88193e40 RDI: 0000000000000005
[   19.923349][  T341] RBP: 00007ffc88193da0 R08: 0000000000000000 R09: 0000000000000000
[   19.923349][  T341] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91b056
[   19.923350][  T341] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc88194500
| [   23.011897][  T399] softirqs last disabled at (32594): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   23.011899][  T399] Preemption disabled at:
| [   23.011900][  T399] vprintk_emit (kernel/printk/printk.c:2471)
| [   23.011911][  T399] Tainted: [W]=WARN
[   23.011911][  T399] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   23.011913][  T399] Call Trace:
[   23.011915][  T399]  <TASK>
[   23.011916][  T399]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   23.011923][  T399]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   23.011924][  T399]  __might_resched.cold (kernel/sched/core.c:9234)
[   23.011929][  T399]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   23.011933][  T399]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   23.011938][  T399]  __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))
[   23.011940][  T399]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.011946][  T399]  ? 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)
[   23.011949][  T399]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   23.011953][  T399]  put_chars (drivers/char/virtio_console.c:1176)
[   23.011955][  T399]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   23.011961][  T399]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   23.011969][  T399]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   23.011972][  T399]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.011977][  T399]  console_emit_next_record (kernel/printk/printk.c:3183)
[   23.011982][  T399]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   23.011985][  T399]  ? 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))
[   23.011990][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.011993][  T399]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   23.011996][  T399]  console_flush_one_record (kernel/printk/printk.c:3268)
[   23.012001][  T399]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   23.012003][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.012008][  T399]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   23.012011][  T399]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   23.012013][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.012014][  T399]  ? 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)
[   23.012018][  T399]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   23.012020][  T399]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   23.012023][  T399]  vprintk_emit (kernel/printk/printk.c:2479)
[   23.012026][  T399]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   23.012027][  T399]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   23.012031][  T399]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   23.012032][  T399]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   23.012035][  T399]  ? ____sys_sendmsg (net/socket.c:2713)
[   23.012036][  T399]  ? ___sys_sendmsg (net/socket.c:2767)
[   23.012038][  T399]  ? __sys_sendmsg (net/socket.c:2799)
[   23.012040][  T399]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   23.012045][  T399]  _printk (kernel/printk/printk.c:2504)
[   23.012049][  T399]  ? snapshot_read.cold (user.c:?)
[   23.012053][  T399]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   23.012057][  T399]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   23.012061][  T399]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   23.012064][  T399]  ? netdev_notice (net/core/dev.c:13194)
[   23.012068][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.012070][  T399]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   23.012072][  T399]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   23.012074][  T399]  ? 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)
[   23.012077][  T399]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   23.012080][  T399]  dev_set_allmulti (net/core/dev_api.c:315)
[   23.012084][  T399]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   23.012088][  T399]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   23.012093][  T399]  br_dev_delete (net/bridge/br_if.c:387)
[   23.012097][  T399]  rtnl_dellink (net/core/rtnetlink.c:3651 net/core/rtnetlink.c:3694)
[   23.012098][  T399]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   23.012100][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.012102][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.012104][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   23.012125][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.012127][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.012130][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.012132][  T399]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   23.012134][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.012139][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.012141][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.012143][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   23.012145][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.012148][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   23.012150][  T399]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   23.012155][  T399]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   23.012158][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   23.012163][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   23.012165][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.012169][  T399]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   23.012171][  T399]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   23.012174][  T399]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   23.012180][  T399]  ? 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))
[   23.012182][  T399]  ? 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))
[   23.012187][  T399]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   23.012191][  T399]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   23.012193][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   23.012198][  T399]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   23.012202][  T399]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   23.012205][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   23.012207][  T399]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   23.012213][  T399]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   23.012215][  T399]  ____sys_sendmsg (net/socket.c:2713)
[   23.012218][  T399]  ? copy_msghdr_from_user (net/socket.c:2650)
[   23.012220][  T399]  ? sock_write_iter (net/socket.c:1269)
[   23.012222][  T399]  ? move_addr_to_kernel (net/socket.c:258)
[   23.012229][  T399]  ___sys_sendmsg (net/socket.c:2767)
[   23.012232][  T399]  ? copy_msghdr_from_user (net/socket.c:2619)
[   23.012247][  T399]  __sys_sendmsg (net/socket.c:2799)
[   23.012250][  T399]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   23.012256][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   23.012259][  T399]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   23.012261][  T399]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   23.012264][  T399]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   23.012267][  T399] RIP: 0033:0x7f0f032d254e
[   23.012271][  T399] 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
[   23.012273][  T399] RSP: 002b:00007fff8e230440 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   23.012275][  T399] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f0f032d254e
[   23.012277][  T399] RDX: 0000000000000000 RSI: 00007fff8e2304f0 RDI: 0000000000000005
[   23.012277][  T399] RBP: 00007fff8e230450 R08: 0000000000000000 R09: 0000000000000000
[   23.012278][  T399] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91b059
[   23.012279][  T399] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff8e230bb0
| [   25.894580][  T488] softirqs last disabled at (23208): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   25.894583][  T488] Preemption disabled at:
| [   25.894584][  T488] vprintk_emit (kernel/printk/printk.c:2471)
| [   25.894592][  T488] Tainted: [W]=WARN
[   25.894593][  T488] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.894599][  T488] Call Trace:
[   25.894600][  T488]  <TASK>
[   25.894602][  T488]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.894608][  T488]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   25.894610][  T488]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.894614][  T488]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.894618][  T488]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   25.894622][  T488]  __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))
[   25.894624][  T488]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.894630][  T488]  ? 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)
[   25.894633][  T488]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.894637][  T488]  put_chars (drivers/char/virtio_console.c:1176)
[   25.894639][  T488]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.894645][  T488]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.894653][  T488]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.894656][  T488]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.894661][  T488]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.894665][  T488]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.894667][  T488]  ? 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))
[   25.894670][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.894672][  T488]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.894676][  T488]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.894680][  T488]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.894682][  T488]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.894687][  T488]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.894690][  T488]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.894692][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.894694][  T488]  ? 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)
[   25.894697][  T488]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.894699][  T488]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.894702][  T488]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.894705][  T488]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.894707][  T488]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   25.894712][  T488]  _printk (kernel/printk/printk.c:2504)
[   25.894716][  T488]  ? snapshot_read.cold (user.c:?)
[   25.894717][  T488]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.894720][  T488]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.894723][  T488]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.894725][  T488]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   25.894729][  T488]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   25.894732][  T488]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   25.894734][  T488]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   25.894737][  T488]  ? netdev_notice (net/core/dev.c:13194)
[   25.894739][  T488]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.894742][  T488]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.894745][  T488]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   25.894748][  T488]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   25.894750][  T488]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   25.894752][  T488]  ? register_netdev (net/core/dev.c:11618)
[   25.894754][  T488]  ? 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))
[   25.894759][  T488]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   25.894761][  T488]  ? __kernel_text_address (kernel/extable.c:79)
[   25.894764][  T488]  ? write_profile (profile.c:?)
[   25.894768][  T488]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   25.894773][  T488]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   25.894777][  T488]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   25.894779][  T488]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   25.894780][  T488]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   25.894782][  T488]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   25.894785][  T488]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.894787][  T488]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.894789][  T488]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.894791][  T488]  ? kasan_save_stack (mm/kasan/common.c:58)
[   25.894793][  T488]  ? kasan_save_stack (mm/kasan/common.c:57)
[   25.894794][  T488]  ? kasan_save_track (mm/kasan/common.c:78)
[   25.894795][  T488]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   25.894798][  T488]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.894800][  T488]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   25.894802][  T488]  ? ___sys_sendmsg (net/socket.c:2758)
[   25.894806][  T488]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.894808][  T488]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.894811][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.894812][  T488]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.894814][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.894815][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.894817][  T488]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   25.894819][  T488]  ? __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)
[   25.894820][  T488]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   25.894822][  T488]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.894826][  T488]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   25.894827][  T488]  ? nla_get_range_signed (lib/nlattr.c:270)
[   25.894832][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.894834][  T488]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   25.894839][  T488]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   25.894844][  T488]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.894846][  T488]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.894850][  T488]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.894852][  T488]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.894854][  T488]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.894856][  T488]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.894860][  T488]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.894862][  T488]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   25.894865][  T488]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.894866][  T488]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.894871][  T488]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.894873][  T488]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.894876][  T488]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   25.894879][  T488]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.894882][  T488]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   25.894888][  T488]  ? 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))
[   25.894890][  T488]  ? 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))
[   25.894894][  T488]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   25.894898][  T488]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   25.894904][  T488]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.894908][  T488]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   25.894912][  T488]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   25.894915][  T488]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.894917][  T488]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   25.894922][  T488]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   25.894925][  T488]  ____sys_sendmsg (net/socket.c:2713)
[   25.894927][  T488]  ? copy_msghdr_from_user (net/socket.c:2650)
[   25.894929][  T488]  ? sock_write_iter (net/socket.c:1269)
[   25.894931][  T488]  ? move_addr_to_kernel (net/socket.c:258)
[   25.894938][  T488]  ___sys_sendmsg (net/socket.c:2767)
[   25.894941][  T488]  ? copy_msghdr_from_user (net/socket.c:2619)
[   25.894957][  T488]  __sys_sendmsg (net/socket.c:2799)
[   25.894960][  T488]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   25.894966][  T488]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.894969][  T488]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.894971][  T488]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   25.894974][  T488]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.894976][  T488] RIP: 0033:0x7f93c331754e
[   25.894980][  T488] 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
[   25.894982][  T488] RSP: 002b:00007ffe389e3a10 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   25.894985][  T488] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f93c331754e
[   25.894986][  T488] RDX: 0000000000000000 RSI: 00007ffe389e3ac0 RDI: 0000000000000005
[   25.894987][  T488] RBP: 00007ffe389e3a20 R08: 0000000000000000 R09: 0000000000000000
[   25.894988][  T488] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91b05c
[   25.894988][  T488] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe389e4190
| [   34.426840][  T678] softirqs last disabled at (25986): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   34.426843][  T678] Preemption disabled at:
| [   34.426843][  T678] vprintk_emit (kernel/printk/printk.c:2471)
| [   34.426851][  T678] Tainted: [W]=WARN
[   34.426852][  T678] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   34.426854][  T678] Call Trace:
[   34.426855][  T678]  <TASK>
[   34.426857][  T678]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   34.426863][  T678]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   34.426864][  T678]  __might_resched.cold (kernel/sched/core.c:9234)
[   34.426869][  T678]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   34.426873][  T678]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   34.426877][  T678]  __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))
[   34.426879][  T678]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.426886][  T678]  ? 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)
[   34.426888][  T678]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   34.426892][  T678]  put_chars (drivers/char/virtio_console.c:1176)
[   34.426894][  T678]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   34.426903][  T678]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   34.426911][  T678]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   34.426914][  T678]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.426919][  T678]  console_emit_next_record (kernel/printk/printk.c:3183)
[   34.426923][  T678]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   34.426925][  T678]  ? 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))
[   34.426928][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.426931][  T678]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.426934][  T678]  console_flush_one_record (kernel/printk/printk.c:3268)
[   34.426939][  T678]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   34.426940][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.426946][  T678]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   34.426948][  T678]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   34.426950][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.426952][  T678]  ? 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)
[   34.426956][  T678]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   34.426957][  T678]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   34.426960][  T678]  vprintk_emit (kernel/printk/printk.c:2479)
[   34.426963][  T678]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   34.426966][  T678]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   34.426971][  T678]  _printk (kernel/printk/printk.c:2504)
[   34.426974][  T678]  ? snapshot_read.cold (user.c:?)
[   34.426976][  T678]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   34.426979][  T678]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   34.426981][  T678]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   34.426984][  T678]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   34.426987][  T678]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   34.426990][  T678]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   34.426992][  T678]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   34.426995][  T678]  ? netdev_notice (net/core/dev.c:13194)
[   34.426998][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.427001][  T678]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   34.427003][  T678]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   34.427007][  T678]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   34.427009][  T678]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   34.427011][  T678]  ? register_netdev (net/core/dev.c:11618)
[   34.427012][  T678]  ? 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))
[   34.427018][  T678]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   34.427020][  T678]  ? __kernel_text_address (kernel/extable.c:79)
[   34.427023][  T678]  ? write_profile (profile.c:?)
[   34.427027][  T678]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   34.427033][  T678]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   34.427036][  T678]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   34.427038][  T678]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   34.427039][  T678]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   34.427041][  T678]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   34.427044][  T678]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   34.427046][  T678]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   34.427048][  T678]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   34.427050][  T678]  ? kasan_save_stack (mm/kasan/common.c:58)
[   34.427052][  T678]  ? kasan_save_stack (mm/kasan/common.c:57)
[   34.427053][  T678]  ? kasan_save_track (mm/kasan/common.c:78)
[   34.427055][  T678]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   34.427057][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.427059][  T678]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   34.427062][  T678]  ? ___sys_sendmsg (net/socket.c:2758)
[   34.427065][  T678]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.427067][  T678]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   34.427070][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.427071][  T678]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   34.427073][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.427074][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.427076][  T678]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   34.427078][  T678]  ? __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)
[   34.427079][  T678]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   34.427081][  T678]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   34.427084][  T678]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   34.427085][  T678]  ? nla_get_range_signed (lib/nlattr.c:270)
[   34.427090][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.427092][  T678]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   34.427097][  T678]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   34.427103][  T678]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.427104][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.427109][  T678]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.427111][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.427113][  T678]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.427114][  T678]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   34.427118][  T678]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   34.427120][  T678]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   34.427123][  T678]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.427125][  T678]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   34.427129][  T678]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   34.427131][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.427134][  T678]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   34.427137][  T678]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   34.427140][  T678]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   34.427146][  T678]  ? 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))
[   34.427148][  T678]  ? 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))
[   34.427153][  T678]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   34.427157][  T678]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   34.427159][  T678]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   34.427163][  T678]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   34.427167][  T678]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   34.427171][  T678]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   34.427173][  T678]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   34.427178][  T678]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   34.427180][  T678]  ____sys_sendmsg (net/socket.c:2713)
[   34.427183][  T678]  ? copy_msghdr_from_user (net/socket.c:2650)
[   34.427185][  T678]  ? sock_write_iter (net/socket.c:1269)
[   34.427186][  T678]  ? move_addr_to_kernel (net/socket.c:258)
[   34.427194][  T678]  ___sys_sendmsg (net/socket.c:2767)
[   34.427196][  T678]  ? copy_msghdr_from_user (net/socket.c:2619)
[   34.427212][  T678]  __sys_sendmsg (net/socket.c:2799)
[   34.427215][  T678]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   34.427221][  T678]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   34.427224][  T678]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   34.427227][  T678]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   34.427229][  T678]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   34.427232][  T678] RIP: 0033:0x7f22e322e54e
[   34.427236][  T678] 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
[   34.427237][  T678] RSP: 002b:00007ffe01287100 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   34.427240][  T678] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f22e322e54e
[   34.427241][  T678] RDX: 0000000000000000 RSI: 00007ffe012871b0 RDI: 0000000000000005
[   34.427242][  T678] RBP: 00007ffe01287110 R08: 0000000000000000 R09: 0000000000000000
[   34.427243][  T678] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91b064


Finger prints:
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
br_stp_disable_bridge:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
netif_change_name:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars