======================================
| [   10.260168][  T194] softirqs last disabled at (32997): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   10.260170][  T194] Preemption disabled at:
| [   10.260170][  T194] 0x0
| [   10.260181][  T194] Tainted: [W]=WARN
[   10.260182][  T194] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.260184][  T194] Call Trace:
[   10.260186][  T194]  <TASK>
[   10.260187][  T194]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.260194][  T194]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.260199][  T194]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.260203][  T194]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.260208][  T194]  __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))
[   10.260211][  T194]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.260216][  T194]  ? 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)
[   10.260219][  T194]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.260224][  T194]  put_chars (drivers/char/virtio_console.c:1176)
[   10.260227][  T194]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.260229][  T194]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.260234][  T194]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.260239][  T194]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.260246][  T194]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.260248][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.260251][  T194]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.260255][  T194]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.260259][  T194]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.260261][  T194]  ? 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))
[   10.260265][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.260267][  T194]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.260271][  T194]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.260276][  T194]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.260278][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.260284][  T194]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.260287][  T194]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.260289][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.260291][  T194]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   10.260295][  T194]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.260297][  T194]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.260301][  T194]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.260305][  T194]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.260309][  T194]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.260313][  T194]  _printk (kernel/printk/printk.c:2504)
[   10.260316][  T194]  ? snapshot_read.cold (user.c:?)
[   10.260319][  T194]  ? 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)
[   10.260322][  T194]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   10.260326][  T194]  ? 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)
[   10.260329][  T194]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[   10.260332][  T194]  ? exit_notify (kernel/exit.c:780)
[   10.260334][  T194]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.260337][  T194]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.260341][  T194]  do_group_exit (kernel/exit.c:1151)
[   10.260344][  T194]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[   10.260346][  T194]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[   10.260348][  T194]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.260351][  T194]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.260355][  T194]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.260357][  T194] RIP: 0033:0x7f47068d01b8
[   10.260359][  T194] Code: Unable to access opcode bytes at 0x7f47068d018e.

Code starting with the faulting instruction
===========================================
[   10.260361][  T194] RSP: 002b:00007fffef2daf98 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   10.260363][  T194] RAX: ffffffffffffffda RBX: 00007f4706a00f88 RCX: 00007f47068d01b8
[   10.260365][  T194] RDX: 00007f470661afc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[   10.260366][  T194] RBP: 00007fffef2daff0 R08: 0000000000000000 R09: 0000000000008010
[   10.260367][  T194] R10: 00007fffef2dadb0 R11: 0000000000000246 R12: 0000000000000001
[   10.260367][  T194] R13: 0000000000000000 R14: 00007f47069ff680 R15: 00007f4706a00fa0
| [   12.153387][  T260] softirqs last disabled at (26512): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   12.153389][  T260] Preemption disabled at:
| [   12.153390][  T260] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.153400][  T260] Tainted: [W]=WARN
[   12.153401][  T260] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.153402][  T260] Call Trace:
[   12.153404][  T260]  <TASK>
[   12.153406][  T260]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.153411][  T260]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.153414][  T260]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.153418][  T260]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.153422][  T260]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.153428][  T260]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   12.153430][  T260]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.153436][  T260]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   12.153439][  T260]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.153442][  T260]  put_chars (drivers/char/virtio_console.c:1176)
[   12.153445][  T260]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.153449][  T260]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   12.153453][  T260]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.153456][  T260]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   12.153458][  T260]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.153460][  T260]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.153464][  T260]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.153466][  T260]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   12.153469][  T260]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.153473][  T260]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.153477][  T260]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.153481][  T260]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.153483][  T260]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   12.153486][  T260]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.153488][  T260]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.153493][  T260]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.153499][  T260]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.153502][  T260]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.153511][  T260]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.153515][  T260]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.153518][  T260]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.153521][  T260]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   12.153527][  T260]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.153530][  T260]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.153535][  T260]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.153541][  T260]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.153544][  T260]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.153547][  T260]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   12.153551][  T260]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.153555][  T260]  _printk (kernel/printk/printk.c:2504)
[   12.153559][  T260]  ? snapshot_read.cold (user.c:?)
[   12.153563][  T260]  ? br_multicast_flood (??:?) bridge
[   12.153577][  T260]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.153578][  T260]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.153579][  T260]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.153584][  T260] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   12.153594][  T260] br_init_port (net/bridge/br_stp_if.c:39) bridge
[   12.153603][  T260] new_nbp (net/bridge/br_if.c:449) bridge
[   12.153613][  T260] br_add_if (net/bridge/br_if.c:592) bridge
[   12.153620][  T260]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   12.153624][  T260]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   12.153627][  T260]  ? __kernel_text_address (kernel/extable.c:79)
[   12.153631][  T260]  do_set_master (net/core/rtnetlink.c:3071)
[   12.153636][  T260]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.153639][  T260]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.153643][  T260]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.153644][  T260]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.153646][  T260]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.153650][  T260]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.153653][  T260]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.153654][  T260]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.153657][  T260]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.153660][  T260]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.153662][  T260]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.153665][  T260]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.153667][  T260]  ? netlink_seq_next (net/netlink/af_netlink.c:2685)
[   12.153670][  T260]  ? ___sys_sendmsg (net/socket.c:2757)
[   12.153674][  T260]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.153676][  T260]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.153679][  T260]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.153682][  T260]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.153683][  T260]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.153685][  T260]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.153687][  T260]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.153691][  T260]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   12.153693][  T260]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.153695][  T260]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.153699][  T260]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.153700][  T260]  ? nla_get_range_signed (lib/nlattr.c:270)
[   12.153705][  T260]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.153711][  T260]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.153716][  T260]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.153718][  T260]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.153723][  T260]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.153724][  T260]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.153727][  T260]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.153729][  T260]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.153732][  T260]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.153734][  T260]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.153738][  T260]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.153739][  T260]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.153749][  T260]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.153751][  T260]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.153755][  T260]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.153757][  T260]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.153760][  T260]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.153766][  T260]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   12.153768][  T260]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   12.153772][  T260]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.153776][  T260]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.153779][  T260]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.153783][  T260]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.153787][  T260]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.153791][  T260]  ? __might_fault (mm/memory.c:7482 (discriminator 5))
[   12.153796][  T260]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   12.153799][  T260]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.153801][  T260]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   12.153803][  T260]  ? move_addr_to_kernel (net/socket.c:258)
[   12.153810][  T260]  ___sys_sendmsg (net/socket.c:2767)
[   12.153813][  T260]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.153829][  T260]  __sys_sendmsg (net/socket.c:2799)
[   12.153832][  T260]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.153839][  T260]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.153842][  T260]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.153845][  T260]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.153848][  T260]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.153851][  T260] RIP: 0033:0x7f3bf74e754e
[   12.153855][  T260] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   12.153858][  T260] RSP: 002b:00007ffcbcb02f40 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.153862][  T260] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f3bf74e754e
[   12.153863][  T260] RDX: 0000000000000000 RSI: 00007ffcbcb02ff0 RDI: 0000000000000005
[   12.153864][  T260] RBP: 00007ffcbcb02f50 R08: 0000000000000000 R09: 0000000000000000
[   12.153865][  T260] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9160c5
[   12.153866][  T260] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcbcb036b0
| [   27.494321][    C2] softirqs last disabled at (705765): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   27.494324][    C2] Preemption disabled at:
| [   27.494325][    C2] 0x0
| [   27.494337][    C2] Tainted: [W]=WARN
[   27.494339][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.494341][    C2] Call Trace:
[   27.494343][    C2]  <IRQ>
[   27.494345][    C2]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.494352][    C2]  __might_resched.cold (kernel/sched/core.c:9234)
[   27.494357][    C2]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   27.494361][    C2]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[   27.494365][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.494369][    C2]  __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))
[   27.494373][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   27.494377][    C2]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.494382][    C2]  ? 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)
[   27.494384][    C2]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   27.494387][    C2]  put_chars (drivers/char/virtio_console.c:1176)
[   27.494390][    C2]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   27.494393][    C2]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   27.494397][    C2]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   27.494402][    C2]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   27.494404][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.494407][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.494410][    C2]  console_emit_next_record (kernel/printk/printk.c:3183)
[   27.494414][    C2]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   27.494416][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.494419][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.494421][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.494424][    C2]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   27.494427][    C2]  console_flush_one_record (kernel/printk/printk.c:3268)
[   27.494430][    C2]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   27.494434][    C2]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   27.494437][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.494439][    C2]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   27.494441][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.494444][    C2]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   27.494445][    C2]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   27.494448][    C2]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   27.494451][    C2]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   27.494454][    C2]  vprintk_emit (kernel/printk/printk.c:2479)
[   27.494457][    C2]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   27.494460][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.494475][    C2]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   27.494477][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.494487][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.494496][    C2]  ? is_module_text_address (./include/linux/rcupdate.h:882 ./include/linux/rcupdate.h:1216 kernel/module/main.c:3934)
[   27.494501][    C2]  _printk (kernel/printk/printk.c:2504)
[   27.494505][    C2]  ? snapshot_read.cold (user.c:?)
[   27.494507][    C2]  ? arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[   27.494513][    C2]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   27.494516][    C2]  ? nbcon_cpu_emergency_enter (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:435 kernel/printk/nbcon.c:1723)
[   27.494518][    C2]  print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4097 (discriminator 1))
[   27.494522][    C2]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   27.494526][    C2]  mark_lock (kernel/locking/lockdep.c:4769)
[   27.494529][    C2]  mark_usage (kernel/locking/lockdep.c:4658)
[   27.494531][    C2]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   27.494535][    C2]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.494537][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.494548][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.494551][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.494553][    C2]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.494564][    C2]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   27.494567][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.494578][    C2] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.494589][    C2]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.494599][    C2]  call_timer_fn (kernel/time/timer.c:1748)
[   27.494603][    C2]  ? detach_if_pending (./include/linux/list.h:1159)
[   27.494605][    C2]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   27.494610][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.494613][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.494615][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.494619][    C2]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   27.494621][    C2]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.494632][    C2]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   27.494634][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.494639][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   27.494642][    C2]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   27.494645][    C2]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   27.494648][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.494651][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.494653][    C2]  handle_softirqs (kernel/softirq.c:645)
[   27.494656][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.494658][    C2]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   27.494662][    C2]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   27.494664][    C2]  irq_exit_rcu (kernel/softirq.c:784)
[   27.494666][    C2]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   27.494670][    C2]  </IRQ>
[   27.494671][    C2]  <TASK>
[   27.494672][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   27.494674][    C2]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   27.494677][    C2] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   27.494681][    C2] Code: 48 8b 3d 94 e2 f5 01 e8 1f 00 00 00 48 2b 05 58 a3 95 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 96 11 00 fb f4 <c3> 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01
All code
========
   0:	48 8b 3d 94 e2 f5 01 	mov    0x1f5e294(%rip),%rdi        # 0x1f5e29b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 a3 95 00 	sub    0x95a358(%rip),%rax        # 0x95a36b
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d 13 96 11 00 	verw   0x119613(%rip)        # 0x11963b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	48 83 ec 20          	sub    $0x20,%rsp
  33:	8b 17                	mov    (%rdi),%edx
  35:	49 89 f8             	mov    %rdi,%r8
  38:	83 e2 fe             	and    $0xfffffffe,%edx
  3b:	41 89 d2             	mov    %edx,%r10d
  3e:	0f                   	.byte 0xf
  3f:	01                   	.byte 0x1

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	48 83 ec 20          	sub    $0x20,%rsp
   9:	8b 17                	mov    (%rdi),%edx
   b:	49 89 f8             	mov    %rdi,%r8
   e:	83 e2 fe             	and    $0xfffffffe,%edx
  11:	41 89 d2             	mov    %edx,%r10d
  14:	0f                   	.byte 0xf
  15:	01                   	.byte 0x1
[   27.494683][    C2] RSP: 0018:ffa0000000157e00 EFLAGS: 00000282
[   27.494688][    C2] RAX: 00000000000ac4e3 RBX: ff11000001bec6c0 RCX: ffffffff94af0307
[   27.494690][    C2] RDX: ff11000001bec6c0 RSI: ffffffff97838b01 RDI: ffffffff9728d8e0
[   27.494692][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   27.494693][    C2] R10: 0000000000000002 R11: 0000000000000001 R12: 1ff400000002afc3
[   27.494694][    C2] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[   27.494697][    C2]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   27.494701][    C2]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   27.494704][    C2]  default_idle_call (kernel/sched/idle.c:122)
[   27.494706][    C2]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   27.494709][    C2]  ? arch_cpu_idle_exit+0x40/0x40
[   27.494711][    C2]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   27.494715][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.494717][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.494720][    C2]  do_idle (kernel/sched/idle.c:355)
[   27.494722][    C2]  cpu_startup_entry (kernel/sched/idle.c:454)
[   27.494725][    C2]  start_secondary (arch/x86/kernel/smpboot.c:312)
[   27.494728][    C2]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:733 (discriminator 4))
[   27.494731][    C2]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   27.552561][    C2]
| [   27.552630][    C2]
| [   27.552630][    C2] stack backtrace:
| [   27.552805][    C2] Tainted: [W]=WARN
[   27.552806][    C2] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   27.552808][    C2] Call Trace:
[   27.552810][    C2]  <IRQ>
[   27.552812][    C2]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   27.552816][    C2]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4141)
[   27.552819][    C2]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   27.552822][    C2]  mark_lock (kernel/locking/lockdep.c:4769)
[   27.552824][    C2]  mark_usage (kernel/locking/lockdep.c:4658)
[   27.552826][    C2]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   27.552828][    C2]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   27.552830][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.552837][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.552840][    C2]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   27.552841][    C2]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.552847][    C2]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   27.552849][    C2]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.552856][    C2] br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88) bridge
[   27.552862][    C2]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.552869][    C2]  call_timer_fn (kernel/time/timer.c:1748)
[   27.552872][    C2]  ? detach_if_pending (./include/linux/list.h:1159)
[   27.552873][    C2]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   27.552877][    C2]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   27.552879][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.552880][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.552883][    C2]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   27.552884][    C2]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54) bridge
[   27.552891][    C2]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   27.552893][    C2]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   27.552895][    C2]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   27.552898][    C2]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   27.552900][    C2]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   27.552901][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.552904][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.552906][    C2]  handle_softirqs (kernel/softirq.c:645)
[   27.552908][    C2]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   27.552909][    C2]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   27.552911][    C2]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   27.552912][    C2]  irq_exit_rcu (kernel/softirq.c:784)
[   27.552914][    C2]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   27.552916][    C2]  </IRQ>
[   27.552916][    C2]  <TASK>
[   27.552917][    C2]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   27.552918][    C2]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   27.552920][    C2] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   27.552923][    C2] Code: 48 8b 3d 94 e2 f5 01 e8 1f 00 00 00 48 2b 05 58 a3 95 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 96 11 00 fb f4 <c3> 0f 1f 40 d6 48 83 ec 20 8b 17 49 89 f8 83 e2 fe 41 89 d2 0f 01
All code
========
   0:	48 8b 3d 94 e2 f5 01 	mov    0x1f5e294(%rip),%rdi        # 0x1f5e29b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 a3 95 00 	sub    0x95a358(%rip),%rax        # 0x95a36b
  13:	c3                   	ret
  14:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  1b:	f3 0f 1e fa          	endbr64
  1f:	eb 07                	jmp    0x28
  21:	0f 00 2d 13 96 11 00 	verw   0x119613(%rip)        # 0x11963b
  28:	fb                   	sti
  29:	f4                   	hlt
  2a:*	c3                   	ret		<-- trapping instruction
  2b:	0f 1f 40 d6          	nopl   -0x2a(%rax)
  2f:	48 83 ec 20          	sub    $0x20,%rsp
  33:	8b 17                	mov    (%rdi),%edx
  35:	49 89 f8             	mov    %rdi,%r8
  38:	83 e2 fe             	and    $0xfffffffe,%edx
  3b:	41 89 d2             	mov    %edx,%r10d
  3e:	0f                   	.byte 0xf
  3f:	01                   	.byte 0x1

Code starting with the faulting instruction
===========================================
   0:	c3                   	ret
   1:	0f 1f 40 d6          	nopl   -0x2a(%rax)
   5:	48 83 ec 20          	sub    $0x20,%rsp
   9:	8b 17                	mov    (%rdi),%edx
   b:	49 89 f8             	mov    %rdi,%r8
   e:	83 e2 fe             	and    $0xfffffffe,%edx
  11:	41 89 d2             	mov    %edx,%r10d
  14:	0f                   	.byte 0xf
  15:	01                   	.byte 0x1
[   27.552925][    C2] RSP: 0018:ffa0000000157e00 EFLAGS: 00000282
[   27.552927][    C2] RAX: 00000000000ac4e3 RBX: ff11000001bec6c0 RCX: ffffffff94af0307
[   27.552929][    C2] RDX: ff11000001bec6c0 RSI: ffffffff97838b01 RDI: ffffffff9728d8e0
[   27.552929][    C2] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   27.552931][    C2] R10: 0000000000000002 R11: 0000000000000001 R12: 1ff400000002afc3
[   27.552931][    C2] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
[   27.552933][    C2]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   27.552935][    C2]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   27.552936][    C2]  default_idle_call (kernel/sched/idle.c:122)
[   27.552938][    C2]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   27.552940][    C2]  ? arch_cpu_idle_exit+0x40/0x40
[   27.552941][    C2]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   27.552943][    C2]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   27.552944][    C2]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   27.552946][    C2]  do_idle (kernel/sched/idle.c:355)
[   27.552948][    C2]  cpu_startup_entry (kernel/sched/idle.c:454)
[   27.552949][    C2]  start_secondary (arch/x86/kernel/smpboot.c:312)
[   27.552951][    C2]  ? set_cpu_sibling_map (arch/x86/kernel/smpboot.c:733 (discriminator 4))
[   27.552952][    C2]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   39.063973][  T445] softirqs last disabled at (0): 0x0
| [   39.063975][  T445] Preemption disabled at:
| [   39.063976][  T445] 0x0
| [   39.063984][  T445] Tainted: [W]=WARN
[   39.063985][  T445] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   39.063987][  T445] Call Trace:
[   39.063989][  T445]  <TASK>
[   39.063990][  T445]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   39.063995][  T445]  __might_resched.cold (kernel/sched/core.c:9234)
[   39.063999][  T445]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   39.064003][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064007][  T445]  __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))
[   39.064011][  T445]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   39.064014][  T445]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   39.064018][  T445]  ? 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)
[   39.064019][  T445]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   39.064021][  T445]  put_chars (drivers/char/virtio_console.c:1176)
[   39.064023][  T445]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   39.064025][  T445]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[   39.064028][  T445]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   39.064031][  T445]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   39.064034][  T445]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   39.064035][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064037][  T445]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   39.064039][  T445]  console_emit_next_record (kernel/printk/printk.c:3183)
[   39.064041][  T445]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   39.064043][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064045][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064046][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064048][  T445]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   39.064050][  T445]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   39.064052][  T445]  console_flush_one_record (kernel/printk/printk.c:3268)
[   39.064054][  T445]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   39.064057][  T445]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   39.064058][  T445]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   39.064060][  T445]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   39.064062][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064063][  T445]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   39.064065][  T445]  ? lock_acquire (kernel/locking/lockdep.c:5913)
[   39.064066][  T445]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6) kernel/rcu/tree_plugin.h:414 (discriminator 6))
[   39.064068][  T445]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   39.064070][  T445]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   39.064072][  T445]  vprintk_emit (kernel/printk/printk.c:2479)
[   39.064074][  T445]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   39.064076][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064078][  T445]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   39.064080][  T445]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78)
[   39.064082][  T445]  _printk (kernel/printk/printk.c:2504)
[   39.064085][  T445]  ? snapshot_read.cold (user.c:?)
[   39.064087][  T445]  ? ipv6_mc_down (net/ipv6/mcast.c:1137 net/ipv6/mcast.c:2792)
[   39.064092][  T445] br_set_state (net/bridge/br_stp.c:57 (discriminator 2)) bridge
[   39.064105][  T445] br_stp_disable_port (net/bridge/br_stp_if.c:106) bridge
[   39.064113][  T445] br_device_event (net/bridge/br.c:111) bridge
[   39.064122][  T445]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   39.064125][  T445]  ? _sub_I_65535_1+0x4d0/0x4d0 stp
[   39.064127][  T445]  ? addrconf_notify (net/ipv6/addrconf.c:3812)
[   39.064130][  T445]  notifier_call_chain (kernel/notifier.c:85)
[   39.064133][  T445]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9855)
[   39.064137][  T445]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   39.064138][  T445]  ? netif_change_name (net/core/dev.c:1517)
[   39.064140][  T445]  ? netif_set_allmulti (./include/net/netdev_lock.h:30 (discriminator 1))
[   39.064142][  T445]  ? __kernel_text_address (kernel/extable.c:79)
[   39.064144][  T445]  ? write_profile (profile.c:?)
[   39.064146][  T445]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   39.064149][  T445]  netif_change_flags (net/core/dev.c:9882)
[   39.064152][  T445]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   39.064154][  T445]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   39.064156][  T445]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   39.064157][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064159][  T445]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   39.064162][  T445]  ? kasan_save_stack (mm/kasan/common.c:58)
[   39.064165][  T445]  ? kasan_save_stack (mm/kasan/common.c:57)
[   39.064166][  T445]  ? kasan_save_track (mm/kasan/common.c:78)
[   39.064168][  T445]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   39.064169][  T445]  ? __kmalloc_cache_noprof (./include/linux/kasan.h:263 mm/slub.c:5563)
[   39.064171][  T445]  ? rtnl_newlink (./include/linux/slab.h:991 (discriminator 1) net/core/rtnetlink.c:4113 (discriminator 1))
[   39.064172][  T445]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   39.064173][  T445]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   39.064176][  T445]  ? netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   39.064177][  T445]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   39.064178][  T445]  ? ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   39.064181][  T445]  ? ___sys_sendmsg (net/socket.c:2767)
[   39.064182][  T445]  ? __sys_sendmsg (net/socket.c:2799)
[   39.064184][  T445]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   39.064186][  T445]  ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   39.064188][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064190][  T445]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   39.064191][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064193][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064195][  T445]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   39.064198][  T445]  ? __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)
[   39.064199][  T445]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   39.064200][  T445]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   39.064202][  T445]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   39.064204][  T445]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   39.064206][  T445]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   39.064208][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064210][  T445]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   39.064211][  T445]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   39.064212][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064214][  T445]  ? is_bpf_text_address (./include/linux/rcupdate.h:850 kernel/bpf/core.c:749)
[   39.064217][  T445]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   39.064219][  T445]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   39.064220][  T445]  ? __kernel_text_address (kernel/extable.c:79)
[   39.064223][  T445]  ? write_profile (profile.c:?)
[   39.064225][  T445]  ? unwind_get_return_address (arch/x86/kernel/unwind_orc.c:385 arch/x86/kernel/unwind_orc.c:380)
[   39.064226][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064228][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064230][  T445]  ? cap_capable (./include/trace/events/capability.h:26 (discriminator 22) security/commoncap.c:130 (discriminator 22))
[   39.064233][  T445]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   39.064235][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064237][  T445]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   39.064238][  T445]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   39.064240][  T445]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   39.064241][  T445]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   39.064243][  T445]  ? stack_depot_save_flags (lib/stackdepot.c:609 lib/stackdepot.c:676)
[   39.064245][  T445]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   39.064247][  T445]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   39.064248][  T445]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   39.064250][  T445]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   39.064252][  T445]  ? __netlink_lookup (./include/linux/rcupdate.h:850 ./include/linux/rhashtable.h:709 net/netlink/af_netlink.c:499)
[   39.064254][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064256][  T445]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   39.064259][  T445]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   39.064261][  T445]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   39.064263][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064264][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064266][  T445]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   39.064268][  T445]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   39.064270][  T445]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   39.064272][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064274][  T445]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   39.064276][  T445]  ____sys_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4) net/socket.c:2713 (discriminator 4))
[   39.064277][  T445]  ? copy_msghdr_from_user (net/socket.c:2650)
[   39.064279][  T445]  ? get_timestamp.constprop.0 (./include/linux/netdevice.h:5399)
[   39.064280][  T445]  ? move_addr_to_kernel (net/socket.c:258)
[   39.064282][  T445]  ? filter_irq_stacks (kernel/stacktrace.c:402)
[   39.064284][  T445]  ___sys_sendmsg (net/socket.c:2767)
[   39.064286][  T445]  ? copy_msghdr_from_user (net/socket.c:2619)
[   39.064291][  T445]  __sys_sendmsg (net/socket.c:2799)
[   39.064293][  T445]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   39.064296][  T445]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   39.064298][  T445]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   39.064299][  T445]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   39.064301][  T445]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   39.064303][  T445] RIP: 0033:0x7fbeee3a454e
[   39.064305][  T445] 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
[   39.064306][  T445] RSP: 002b:00007fff54d45870 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   39.064310][  T445] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fbeee3a454e
[   39.064311][  T445] RDX: 0000000000000000 RSI: 00007fff54d45920 RDI: 0000000000000005
[   39.064312][  T445] RBP: 00007fff54d45880 R08: 0000000000000000 R09: 0000000000000000
[   39.064313][  T445] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a9160e0


Finger prints:
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
__irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
__kmalloc_noprof:put_chars:hvc_console_print:console_emit_next_record:console_flush_one_record