======================================
| [   10.503733][  T209] softirqs last disabled at (18533): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.503735][  T209] Preemption disabled at:
| [   10.503736][  T209] 0x0
| [   10.503747][  T209] Tainted: [W]=WARN
[   10.503747][  T209] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.503749][  T209] Call Trace:
[   10.503750][  T209]  <TASK>
[   10.503752][  T209]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.503758][  T209]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.503762][  T209]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.503767][  T209]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.503771][  T209]  __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))
[   10.503773][  T209]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.503780][  T209]  ? 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)
[   10.503782][  T209]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.503786][  T209]  put_chars (drivers/char/virtio_console.c:1176)
[   10.503789][  T209]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.503790][  T209]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.503793][  T209]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.503799][  T209]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.503806][  T209]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.503809][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.503811][  T209]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.503815][  T209]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.503819][  T209]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.503821][  T209]  ? 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))
[   10.503824][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.503826][  T209]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.503830][  T209]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.503834][  T209]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.503836][  T209]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.503841][  T209]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.503844][  T209]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.503846][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.503847][  T209]  ? 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)
[   10.503851][  T209]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.503853][  T209]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.503855][  T209]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.503858][  T209]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.503861][  T209]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.503865][  T209]  _printk (kernel/printk/printk.c:2504)
[   10.503868][  T209]  ? snapshot_read.cold (user.c:?)
[   10.503871][  T209]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   10.503874][  T209]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.503878][  T209]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   10.503880][  T209]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[   10.503884][  T209]  ? exit_notify (kernel/exit.c:780)
[   10.503885][  T209]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.503888][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.503892][  T209]  do_group_exit (kernel/exit.c:1151)
[   10.503894][  T209]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[   10.503896][  T209]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[   10.503899][  T209]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.503903][  T209]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.503905][  T209]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.503908][  T209] RIP: 0033:0x7f49d439b1b8
[   10.503910][  T209] Code: Unable to access opcode bytes at 0x7f49d439b18e.

Code starting with the faulting instruction
===========================================
[   10.503911][  T209] RSP: 002b:00007ffdc2156448 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   10.503913][  T209] RAX: ffffffffffffffda RBX: 00007f49d44cbf88 RCX: 00007f49d439b1b8
[   10.503914][  T209] RDX: 00007f49d40e5fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[   10.503915][  T209] RBP: 00007ffdc21564a0 R08: 0000000000000000 R09: 0000000000000050
[   10.503916][  T209] R10: 00007ffdc2156260 R11: 0000000000000246 R12: 0000000000000001
[   10.503917][  T209] R13: 0000000000000000 R14: 00007f49d44ca680 R15: 00007f49d44cbfa0
| [   11.198924][   T70]  #10: ffffffff9ae9d660 (printk_legacy_map-wait-type-override){....}-{3:3}, at: console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
| [   11.198929][   T70]
| [   11.198929][   T70] stack backtrace:
| [   11.198935][   T70] Tainted: [W]=WARN
[   11.198936][   T70] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.198937][   T70] Workqueue: ipv6_addrconf addrconf_dad_work
[   11.198941][   T70] Call Trace:
[   11.198942][   T70]  <TASK>
[   11.198944][   T70]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.198951][   T70]  lockdep_rcu_suspicious.cold (kernel/locking/lockdep.c:6938)
[   11.198957][   T70]  __might_resched (kernel/sched/core.c:9196 (discriminator 9))
[   11.198961][   T70]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.198964][   T70]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   11.198969][   T70]  __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))
[   11.198973][   T70]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.198981][   T70]  ? 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)
[   11.198984][   T70]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.198988][   T70]  put_chars (drivers/char/virtio_console.c:1176)
[   11.198991][   T70]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.198996][   T70]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   11.199001][   T70]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.199005][   T70]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   11.199007][   T70]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.199009][   T70]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.199014][   T70]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.199017][   T70]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   11.199021][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.199024][   T70]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.199028][   T70]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.199033][   T70]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.199040][   T70]  ? 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))
[   11.199044][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.199046][   T70]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.199051][   T70]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.199056][   T70]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.199058][   T70]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.199065][   T70]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.199068][   T70]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.199070][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.199072][   T70]  ? 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)
[   11.199077][   T70]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.199079][   T70]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.199085][   T70]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.199091][   T70]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.199095][   T70]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.199104][   T70]  _printk (kernel/printk/printk.c:2504)
[   11.199108][   T70]  ? snapshot_read.cold (user.c:?)
[   11.199110][   T70]  ? ___ratelimit (lib/ratelimit.c:97 (discriminator 3))
[   11.199116][   T70]  ? idr_get_free (??:?)
[   11.199122][   T70]  ip6_tnl_xmit_ctl.cold (net/ipv6/ip6_tunnel.c:1064 (discriminator 3))
[   11.199128][   T70] ip6gre_tunnel_xmit (net/ipv6/ip6_gre.c:889) ip6_gre
[   11.199134][   T70]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.199137][   T70]  ? __gre6_xmit (./include/net/gre.h:135 (discriminator 2)) ip6_gre
[   11.199140][   T70]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.199143][   T70]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   11.199146][   T70]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.199149][   T70]  ? netif_skb_features (net/core/dev.c:3793 net/core/dev.c:3922)
[   11.199152][   T70]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.199155][   T70]  ? skb_network_protocol (./include/linux/skbuff.h:2534)
[   11.199160][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.199162][   T70]  dev_hard_start_xmit (./include/linux/netdevice.h:5429 ./include/linux/netdevice.h:5438 net/core/dev.c:3937 net/core/dev.c:3953)
[   11.199166][   T70]  ? validate_xmit_skb (net/core/dev.c:4080)
[   11.199170][   T70]  __dev_queue_xmit (net/core/dev.c:4926)
[   11.199174][   T70]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.199176][   T70]  ? ipv6_setsockopt (net/ipv6/ipv6_sockglue.c:980)
[   11.199182][   T70]  ? netdev_core_pick_tx (net/core/dev.c:4784)
[   11.199184][   T70]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.199187][   T70]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.199189][   T70]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   11.199192][   T70]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.199195][   T70]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   11.199198][   T70]  ? __local_bh_enable_ip (kernel/softirq.c:478)
[   11.199201][   T70]  ? __local_bh_enable_ip (kernel/softirq.c:478)
[   11.199203][   T70]  ? ___neigh_create (./include/linux/spinlock.h:407 net/core/neighbour.c:721)
[   11.199211][   T70]  ip6_finish_output2 (./include/net/neighbour.h:560 (discriminator 3) net/ipv6/ip6_output.c:138 (discriminator 3))
[   11.199217][   T70]  ? ip6_dst_lookup (net/ipv6/ip6_output.c:1269)
[   11.199220][   T70]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.199223][   T70]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.199227][   T70]  ? ip6_mtu (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/ip6_route.h:384 (discriminator 2) net/ipv6/route.c:3290 (discriminator 2))
[   11.199232][   T70]  ip6_finish_output (net/ipv6/ip6_output.c:210 net/ipv6/ip6_output.c:221)
[   11.199237][   T70]  ip6_output (./include/linux/netfilter.h:314 net/ipv6/ip6_output.c:248)
[   11.199244][   T70]  ? ip6_finish_output (./include/linux/skbuff.h:1165)
[   11.199248][   T70]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.199251][   T70]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   11.199256][   T70]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.199258][   T70]  ? __local_bh_enable_ip (kernel/softirq.c:478)
[   11.199263][   T70]  ndisc_send_skb (./include/net/dst.h:470 (discriminator 4) ./include/linux/netfilter.h:325 (discriminator 4) net/ipv6/ndisc.c:513 (discriminator 4))
[   11.199268][   T70]  ? ndisc_recv_na (./include/net/net_namespace.h:422 (discriminator 7))
[   11.199276][   T70]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   11.199283][   T70]  addrconf_dad_completed (net/ipv6/addrconf.c:4396)
[   11.199286][   T70]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.199289][   T70]  ? addrconf_rs_timer (net/ipv6/addrconf.c:4092 (discriminator 11))
[   11.199291][   T70]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.199293][   T70]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   11.199296][   T70]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.199300][   T70]  ? addrconf_dad_begin (net/ipv6/addrconf.c:4158)
[   11.199302][   T70]  addrconf_dad_begin (net/ipv6/addrconf.c:4158)
[   11.199304][   T70]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.199307][   T70]  ? addrconf_dad_completed (net/ipv6/addrconf.c:4402)
[   11.199309][   T70]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.199311][   T70]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   11.199313][   T70]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   11.199318][   T70]  addrconf_dad_work (net/ipv6/addrconf.c:4263)
[   11.199322][   T70]  ? addrconf_dad_begin (net/ipv6/addrconf.c:4180)
[   11.199325][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.199327][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.199328][   T70]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.199330][   T70]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.199334][   T70]  process_one_work (kernel/workqueue.c:3387)
[   11.199341][   T70]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[   11.199344][   T70]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   11.199352][   T70]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[   11.199357][   T70]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   11.199359][   T70]  ? __kthread_parkme (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 kernel/kthread.c:272)
[   11.199362][   T70]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   11.199365][   T70]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[   11.199367][   T70]  kthread (kernel/kthread.c:436)
[   11.199369][   T70]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   11.199372][   T70]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   11.199375][   T70]  ret_from_fork (arch/x86/kernel/process.c:158)
[   11.199380][   T70]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[   11.199383][   T70]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[   11.199387][   T70]  ? kthread_affine_preferred (kernel/kthread.c:857)
[   11.199390][   T70]  ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
| [   13.819433][  T266] softirqs last disabled at (132032): unix_release_sock (./include/net/sock.h:2138 net/unix/af_unix.c:678)
| [   13.819435][  T266] Preemption disabled at:
| [   13.819435][  T266] 0x0
| [   13.819446][  T266] Tainted: [W]=WARN
[   13.819447][  T266] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.819448][  T266] Call Trace:
[   13.819450][  T266]  <TASK>
[   13.819452][  T266]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.819459][  T266]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.819463][  T266]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.819467][  T266]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.819472][  T266]  __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))
[   13.819474][  T266]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.819480][  T266]  ? 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)
[   13.819483][  T266]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.819486][  T266]  put_chars (drivers/char/virtio_console.c:1176)
[   13.819489][  T266]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.819490][  T266]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.819493][  T266]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.819499][  T266]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.819506][  T266]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.819509][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.819511][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.819515][  T266]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.819519][  T266]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.819521][  T266]  ? 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))
[   13.819524][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.819526][  T266]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.819530][  T266]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.819534][  T266]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.819536][  T266]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.819541][  T266]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.819544][  T266]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.819546][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.819547][  T266]  ? 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)
[   13.819551][  T266]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.819553][  T266]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.819556][  T266]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.819559][  T266]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.819560][  T266]  ? 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)
[   13.819563][  T266]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.819567][  T266]  _printk (kernel/printk/printk.c:2504)
[   13.819570][  T266]  ? snapshot_read.cold (user.c:?)
[   13.819573][  T266]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   13.819576][  T266]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   13.819580][  T266]  ? do_raw_spin_lock (./include/linux/instrumented.h:55 ./include/linux/atomic/atomic-instrumented.h:1301 ./include/asm-generic/qspinlock.h:112 kernel/locking/spinlock_debug.c:116)
[   13.819582][  T266]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[   13.819586][  T266]  ? exit_notify (kernel/exit.c:780)
[   13.819588][  T266]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.819590][  T266]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.819594][  T266]  do_group_exit (kernel/exit.c:1151)
[   13.819597][  T266]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[   13.819598][  T266]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[   13.819601][  T266]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.819605][  T266]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.819608][  T266]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.819610][  T266] RIP: 0033:0x7f6a908031b8
[   13.819612][  T266] Code: Unable to access opcode bytes at 0x7f6a9080318e.

Code starting with the faulting instruction
===========================================
[   13.819613][  T266] RSP: 002b:00007fff16421588 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   13.819616][  T266] RAX: ffffffffffffffda RBX: 00007f6a90933f88 RCX: 00007f6a908031b8
[   13.819617][  T266] RDX: 00007f6a906e8e88 RSI: ffffffffffffffb0 RDI: 0000000000000000
[   13.819618][  T266] RBP: 00007fff164215e0 R08: 0000000000000000 R09: 0000000000004010
[   13.819619][  T266] R10: 00007fff164213e0 R11: 0000000000000246 R12: 0000000000000003


Finger prints:
__might_resched:__kmalloc_noprof:put_chars:hvc_console_print:console_emit_next_record
__irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
unix_release_sock:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print