======================================
| [   11.305114][  T209] softirqs last disabled at (51653): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   11.305116][  T209] Preemption disabled at:
| [   11.305117][  T209] 0x0
| [   11.305128][  T209] Tainted: [W]=WARN
[   11.305129][  T209] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   11.305130][  T209] Call Trace:
[   11.305132][  T209]  <TASK>
[   11.305133][  T209]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   11.305140][  T209]  __might_resched.cold (kernel/sched/core.c:9234)
[   11.305145][  T209]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   11.305149][  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)
[   11.305153][  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))
[   11.305155][  T209]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.305162][  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)
[   11.305165][  T209]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   11.305169][  T209]  put_chars (drivers/char/virtio_console.c:1176)
[   11.305171][  T209]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   11.305173][  T209]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   11.305176][  T209]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   11.305182][  T209]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   11.305189][  T209]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   11.305192][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.305194][  T209]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.305198][  T209]  console_emit_next_record (kernel/printk/printk.c:3183)
[   11.305202][  T209]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   11.305204][  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))
[   11.305208][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.305209][  T209]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   11.305213][  T209]  console_flush_one_record (kernel/printk/printk.c:3268)
[   11.305218][  T209]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   11.305219][  T209]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.305225][  T209]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   11.305228][  T209]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   11.305230][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.305231][  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)
[   11.305235][  T209]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   11.305237][  T209]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   11.305240][  T209]  vprintk_emit (kernel/printk/printk.c:2479)
[   11.305243][  T209]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   11.305246][  T209]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   11.305250][  T209]  _printk (kernel/printk/printk.c:2504)
[   11.305253][  T209]  ? snapshot_read.cold (user.c:?)
[   11.305256][  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)
[   11.305259][  T209]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   11.305263][  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)
[   11.305266][  T209]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[   11.305270][  T209]  ? exit_notify (kernel/exit.c:780)
[   11.305271][  T209]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   11.305274][  T209]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   11.305278][  T209]  do_group_exit (kernel/exit.c:1151)
[   11.305280][  T209]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[   11.305282][  T209]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[   11.305285][  T209]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   11.305289][  T209]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   11.305292][  T209]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   11.305294][  T209] RIP: 0033:0x7f1ae35551b8
[   11.305296][  T209] Code: Unable to access opcode bytes at 0x7f1ae355518e.

Code starting with the faulting instruction
===========================================
[   11.305297][  T209] RSP: 002b:00007ffe0845c068 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[   11.305300][  T209] RAX: ffffffffffffffda RBX: 00007f1ae3685f88 RCX: 00007f1ae35551b8
[   11.305301][  T209] RDX: 00007f1ae329ffc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[   11.305302][  T209] RBP: 00007ffe0845c0c0 R08: 0000000000000000 R09: 0000000000000050
[   11.305303][  T209] R10: 00007ffe0845be80 R11: 0000000000000246 R12: 0000000000000001
[   11.305304][  T209] R13: 0000000000000000 R14: 00007f1ae3684680 R15: 00007f1ae3685fa0
| [   12.937235][  T282] softirqs last disabled at (40014): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   12.937239][  T282] Preemption disabled at:
| [   12.937240][  T282] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.937251][  T282] Tainted: [W]=WARN
[   12.937253][  T282] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.937255][  T282] Call Trace:
[   12.937257][  T282]  <TASK>
[   12.937259][  T282]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.937267][  T282]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.937270][  T282]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.937277][  T282]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.937282][  T282]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.937289][  T282]  __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))
[   12.937292][  T282]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.937302][  T282]  ? 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)
[   12.937306][  T282]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.937312][  T282]  put_chars (drivers/char/virtio_console.c:1176)
[   12.937316][  T282]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.937321][  T282]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   12.937330][  T282]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.937342][  T282]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.937346][  T282]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.937350][  T282]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.937358][  T282]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.937364][  T282]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.937367][  T282]  ? 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))
[   12.937373][  T282]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.937376][  T282]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.937383][  T282]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.937391][  T282]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.937394][  T282]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.937410][  T282]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.937415][  T282]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.937418][  T282]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.937421][  T282]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   12.937428][  T282]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.937431][  T282]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.937436][  T282]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.937442][  T282]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.937445][  T282]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.937448][  T282]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   12.937454][  T282]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.937460][  T282]  _printk (kernel/printk/printk.c:2504)
[   12.937465][  T282]  ? snapshot_read.cold (user.c:?)
[   12.937474][  T282]  ? br_multicast_flood (??:?)
[   12.937478][  T282]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.937481][  T282]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.937483][  T282]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.937491][  T282]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   12.937498][  T282]  br_init_port (net/bridge/br_stp_if.c:39)
[   12.937502][  T282]  new_nbp (net/bridge/br_if.c:449)
[   12.937509][  T282]  br_add_if (net/bridge/br_if.c:592)
[   12.937513][  T282]  ? is_bpf_text_address (./include/linux/rcupdate.h:882 kernel/bpf/core.c:751)
[   12.937518][  T282]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   12.937527][  T282]  do_set_master (net/core/rtnetlink.c:3071)
[   12.937534][  T282]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.937541][  T282]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.937546][  T282]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.937548][  T282]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.937552][  T282]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.937557][  T282]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.937561][  T282]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.937564][  T282]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.937568][  T282]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.937571][  T282]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.937573][  T282]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.937575][  T282]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   12.937580][  T282]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.937583][  T282]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   12.937587][  T282]  ? ___sys_sendmsg (net/socket.c:2758)
[   12.937594][  T282]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.937597][  T282]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.937601][  T282]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.937604][  T282]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.937607][  T282]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.937609][  T282]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.937612][  T282]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.937616][  T282]  ? __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)
[   12.937618][  T282]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.937622][  T282]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.937629][  T282]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.937631][  T282]  ? nla_get_range_signed (lib/nlattr.c:270)
[   12.937639][  T282]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.937644][  T282]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.937654][  T282]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.937664][  T282]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.937668][  T282]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.937676][  T282]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.937679][  T282]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.937683][  T282]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.937686][  T282]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.937693][  T282]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.937697][  T282]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.937702][  T282]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.937704][  T282]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.937712][  T282]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.937715][  T282]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.937724][  T282]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.937728][  T282]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.937734][  T282]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.937746][  T282]  ? 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))
[   12.937749][  T282]  ? 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))
[   12.937757][  T282]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.937764][  T282]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.937768][  T282]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.937777][  T282]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.937783][  T282]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.937790][  T282]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.937792][  T282]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   12.937801][  T282]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   12.937806][  T282]  ____sys_sendmsg (net/socket.c:2713)
[   12.937809][  T282]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.937813][  T282]  ? sock_write_iter (net/socket.c:1269)
[   12.937816][  T282]  ? move_addr_to_kernel (net/socket.c:258)
[   12.937829][  T282]  ___sys_sendmsg (net/socket.c:2767)
[   12.937834][  T282]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.937866][  T282]  __sys_sendmsg (net/socket.c:2799)
[   12.937870][  T282]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.937882][  T282]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.937888][  T282]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.937892][  T282]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.937897][  T282]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.937900][  T282] RIP: 0033:0x7f8f2c5f154e
[   12.937905][  T282] 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
[   12.937908][  T282] RSP: 002b:00007ffc1a242a80 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.937911][  T282] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f8f2c5f154e
[   12.937913][  T282] RDX: 0000000000000000 RSI: 00007ffc1a242b30 RDI: 0000000000000005
[   12.937915][  T282] RBP: 00007ffc1a242a90 R08: 0000000000000000 R09: 0000000000000000
[   12.937916][  T282] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91a662
[   12.937918][  T282] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffc1a2431f0
| [   14.010393][  T295] softirqs last disabled at (45730): br_device_event (./include/linux/spinlock.h:353 net/bridge/br.c:119)
| [   14.010395][  T295] Preemption disabled at:
| [   14.010396][  T295] 0x0
| [   14.010406][  T295] Tainted: [W]=WARN
[   14.010407][  T295] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   14.010409][  T295] Call Trace:
[   14.010410][  T295]  <TASK>
[   14.010411][  T295]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   14.010424][  T295]  __might_resched.cold (kernel/sched/core.c:9234)
[   14.010429][  T295]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   14.010433][  T295]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   14.010438][  T295]  __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))
[   14.010440][  T295]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.010446][  T295]  ? 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)
[   14.010449][  T295]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   14.010452][  T295]  put_chars (drivers/char/virtio_console.c:1176)
[   14.010455][  T295]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   14.010456][  T295]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.010460][  T295]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.010465][  T295]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   14.010476][  T295]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   14.010479][  T295]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.010480][  T295]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.010485][  T295]  console_emit_next_record (kernel/printk/printk.c:3183)
[   14.010489][  T295]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   14.010491][  T295]  ? 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))
[   14.010494][  T295]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.010495][  T295]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.010499][  T295]  console_flush_one_record (kernel/printk/printk.c:3268)
[   14.010504][  T295]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   14.010506][  T295]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.010511][  T295]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   14.010514][  T295]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   14.010515][  T295]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.010517][  T295]  ? 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)
[   14.010521][  T295]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   14.010523][  T295]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   14.010525][  T295]  vprintk_emit (kernel/printk/printk.c:2479)
[   14.010529][  T295]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   14.010531][  T295]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.010533][  T295]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.010537][  T295]  _printk (kernel/printk/printk.c:2504)
[   14.010541][  T295]  ? snapshot_read.cold (user.c:?)
[   14.010546][  T295]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.010550][  T295]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   14.010555][  T295]  br_init_port (net/bridge/br_stp_if.c:39)
[   14.010557][  T295]  br_stp_enable_port (net/bridge/br_stp_if.c:93)
[   14.010559][  T295]  br_device_event (net/bridge/br.c:120)
[   14.010562][  T295]  ? packet_sendmsg_spkt (af_packet.c:?)
[   14.010564][  T295]  ? nlmsg_notify (./include/net/netlink.h:1165 ./include/net/netlink.h:1184 net/netlink/af_netlink.c:2599)
[   14.010571][  T295]  notifier_call_chain (kernel/notifier.c:85)
[   14.010576][  T295]  __dev_notify_flags (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:9853)
[   14.010581][  T295]  ? netif_change_name (net/core/dev.c:1517)
[   14.010585][  T295]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   14.010588][  T295]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   14.010591][  T295]  ? __kernel_text_address (kernel/extable.c:79)
[   14.010592][  T295]  ? write_profile (profile.c:?)
[   14.010597][  T295]  netif_change_flags (net/core/dev.c:9882)
[   14.010601][  T295]  do_setlink.isra.0 (net/core/rtnetlink.c:3266 (discriminator 1))
[   14.010604][  T295]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   14.010606][  T295]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   14.010608][  T295]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   14.010610][  T295]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   14.010613][  T295]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   14.010615][  T295]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   14.010617][  T295]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   14.010619][  T295]  ? kasan_save_stack (mm/kasan/common.c:58)
[   14.010621][  T295]  ? kasan_save_stack (mm/kasan/common.c:57)
[   14.010622][  T295]  ? kasan_save_track (mm/kasan/common.c:78)
[   14.010624][  T295]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   14.010626][  T295]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.010628][  T295]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   14.010631][  T295]  ? ___sys_sendmsg (net/socket.c:2758)
[   14.010634][  T295]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.010636][  T295]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.010639][  T295]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.010641][  T295]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   14.010642][  T295]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.010643][  T295]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.010645][  T295]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   14.010647][  T295]  ? __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)
[   14.010650][  T295]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   14.010652][  T295]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   14.010655][  T295]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   14.010659][  T295]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.010661][  T295]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   14.010666][  T295]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   14.010672][  T295]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.010673][  T295]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.010678][  T295]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.010680][  T295]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.010682][  T295]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.010684][  T295]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.010688][  T295]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   14.010690][  T295]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   14.010693][  T295]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.010695][  T295]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   14.010699][  T295]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   14.010701][  T295]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.010704][  T295]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   14.010706][  T295]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   14.010709][  T295]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   14.010716][  T295]  ? 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))
[   14.010718][  T295]  ? 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))
[   14.010722][  T295]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   14.010726][  T295]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   14.010729][  T295]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   14.010733][  T295]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   14.010737][  T295]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   14.010741][  T295]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   14.010743][  T295]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   14.010748][  T295]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   14.010751][  T295]  ____sys_sendmsg (net/socket.c:2713)
[   14.010753][  T295]  ? copy_msghdr_from_user (net/socket.c:2650)
[   14.010755][  T295]  ? sock_write_iter (net/socket.c:1269)
[   14.010757][  T295]  ? move_addr_to_kernel (net/socket.c:258)
[   14.010764][  T295]  ___sys_sendmsg (net/socket.c:2767)
[   14.010767][  T295]  ? copy_msghdr_from_user (net/socket.c:2619)
[   14.010783][  T295]  __sys_sendmsg (net/socket.c:2799)
[   14.010786][  T295]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   14.010792][  T295]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   14.010795][  T295]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   14.010798][  T295]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   14.010801][  T295]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   14.010803][  T295] RIP: 0033:0x7fb3cf95a54e
[   14.010806][  T295] 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
[   14.010807][  T295] RSP: 002b:00007ffefe7bb490 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   14.010810][  T295] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fb3cf95a54e
[   14.010811][  T295] RDX: 0000000000000000 RSI: 00007ffefe7bb540 RDI: 0000000000000005
[   14.010812][  T295] RBP: 00007ffefe7bb4a0 R08: 0000000000000000 R09: 0000000000000000
[   14.010813][  T295] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91a663
[   14.010813][  T295] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffefe7bbc00
| [   28.201582][    C0] softirqs last disabled at (607435): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [   28.201584][    C0] Preemption disabled at:
| [   28.201585][    C0] schedule_preempt_disabled (kernel/sched/core.c:7420)
| [   28.201596][    C0] Tainted: [W]=WARN
[   28.201597][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   28.201599][    C0] Call Trace:
[   28.201600][    C0]  <IRQ>
[   28.201602][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.201608][    C0]  ? schedule_preempt_disabled (kernel/sched/core.c:7420)
[   28.201610][    C0]  __might_resched.cold (kernel/sched/core.c:9234)
[   28.201613][    C0]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   28.201616][    C0]  ? __asan_memcpy (mm/kasan/shadow.c:106 (discriminator 1))
[   28.201620][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.201623][    C0]  __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))
[   28.201626][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.201629][    C0]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.201633][    C0]  ? 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)
[   28.201635][    C0]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   28.201638][    C0]  put_chars (drivers/char/virtio_console.c:1176)
[   28.201640][    C0]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   28.201641][    C0]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[   28.201645][    C0]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   28.201650][    C0]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   28.201652][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.201653][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.201656][    C0]  console_emit_next_record (kernel/printk/printk.c:3183)
[   28.201658][    C0]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   28.201660][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.201661][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.201663][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.201664][    C0]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[   28.201666][    C0]  console_flush_one_record (kernel/printk/printk.c:3268)
[   28.201669][    C0]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   28.201672][    C0]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   28.201674][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.201675][    C0]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   28.201677][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.201678][    C0]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.201679][    C0]  ? 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)
[   28.201681][    C0]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   28.201684][    C0]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   28.201685][    C0]  vprintk_emit (kernel/printk/printk.c:2479)
[   28.201687][    C0]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   28.201688][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.201689][    C0]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[   28.201691][    C0]  ? x86_64_start_kernel (./arch/x86/include/asm/page_64.h:103 ./arch/x86/include/asm/page_64.h:114 arch/x86/kernel/head64.c:255)
[   28.201695][    C0]  _printk (kernel/printk/printk.c:2504)
[   28.201698][    C0]  ? snapshot_read.cold (user.c:?)
[   28.201700][    C0]  ? arch_stack_walk (arch/x86/kernel/stacktrace.c:25)
[   28.201703][    C0]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   28.201704][    C0]  ? nbcon_cpu_emergency_enter (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:435 kernel/printk/nbcon.c:1723)
[   28.201706][    C0]  print_irq_inversion_bug.part.0 (kernel/locking/lockdep.c:4097 (discriminator 1))
[   28.201709][    C0]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   28.201712][    C0]  mark_lock (kernel/locking/lockdep.c:4769)
[   28.201714][    C0]  mark_usage (kernel/locking/lockdep.c:4658)
[   28.201715][    C0]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   28.201718][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.201720][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88)
[   28.201724][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.201725][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.201727][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54)
[   28.201728][    C0]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   28.201730][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88)
[   28.201731][    C0]  br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88)
[   28.201733][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54)
[   28.201734][    C0]  call_timer_fn (kernel/time/timer.c:1748)
[   28.201738][    C0]  ? detach_if_pending (./include/linux/list.h:1159)
[   28.201739][    C0]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   28.201743][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   28.201744][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.201746][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.201748][    C0]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   28.201750][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54)
[   28.201752][    C0]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   28.201754][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.201757][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.201759][    C0]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   28.201761][    C0]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   28.201763][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.201766][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.201767][    C0]  handle_softirqs (kernel/softirq.c:645)
[   28.201769][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.201771][    C0]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   28.201773][    C0]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   28.201775][    C0]  irq_exit_rcu (kernel/softirq.c:784)
[   28.201777][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   28.201779][    C0]  </IRQ>
[   28.201779][    C0]  <TASK>
[   28.201780][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   28.201782][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   28.201784][    C0] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   28.201787][    C0] Code: 48 8b 3d 94 82 68 02 e8 1f 00 00 00 48 2b 05 58 d3 a0 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 06 0e 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 82 68 02 	mov    0x2688294(%rip),%rdi        # 0x268829b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 d3 a0 00 	sub    0xa0d358(%rip),%rax        # 0xa0d36b
  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 06 0e 00 	verw   0xe0613(%rip)        # 0xe063b
  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
[   28.201789][    C0] RSP: 0018:ffffffff95c07cf8 EFLAGS: 00000296
[   28.201792][    C0] RAX: 00000000000944c9 RBX: ffffffff95c30600 RCX: ffffffff92306247
[   28.201793][    C0] RDX: ffffffff95c30600 RSI: ffffffff95511011 RDI: ffffffff94e949e0
[   28.201794][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   28.201795][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffffffff2b80fa2
[   28.201796][    C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000014770
[   28.201797][    C0]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   28.201801][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   28.201802][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   28.201804][    C0]  default_idle_call (kernel/sched/idle.c:122)
[   28.201806][    C0]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   28.201808][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[   28.201810][    C0]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   28.201812][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.201814][    C0]  do_idle (kernel/sched/idle.c:355)
[   28.201815][    C0]  cpu_startup_entry (kernel/sched/idle.c:454)
[   28.201817][    C0]  rest_init (init/main.c:727)
[   28.201819][    C0]  ? __cpuidle_text_end (??:?)
[   28.201821][    C0]  ? rest_init (init/main.c:727)
[   28.201823][    C0]  ? acpi_hw_set_mode (drivers/acpi/acpica/hwacpi.c:72 (discriminator 1))
[   28.201827][    C0]  ? cpus_read_unlock (./include/linux/percpu-rwsem.h:125 (discriminator 1) kernel/cpu.c:502 (discriminator 1))
[   28.201828][    C0]  ? acpi_enable (drivers/acpi/acpica/evxfevnt.c:47)
[   28.201830][    C0]  start_kernel (init/main.c:1185)
[   28.201833][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:310)
[   28.201835][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:291)
[   28.201837][    C0]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [   28.310932][    C0]
| [   28.311005][    C0]
| [   28.311005][    C0] stack backtrace:
| [   28.311194][    C0] Tainted: [W]=WARN
[   28.311195][    C0] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   28.311197][    C0] Call Trace:
[   28.311198][    C0]  <IRQ>
[   28.311199][    C0]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   28.311204][    C0]  print_irq_inversion_bug.part.0.cold (kernel/locking/lockdep.c:4141)
[   28.311207][    C0]  mark_lock_irq (kernel/locking/lockdep.c:4095 kernel/locking/lockdep.c:4174 kernel/locking/lockdep.c:4310)
[   28.311210][    C0]  mark_lock (kernel/locking/lockdep.c:4769)
[   28.311212][    C0]  mark_usage (kernel/locking/lockdep.c:4658)
[   28.311214][    C0]  __lock_acquire (kernel/locking/lockdep.c:5208)
[   28.311216][    C0]  lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   28.311218][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88)
[   28.311220][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.311222][    C0]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   28.311224][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54)
[   28.311226][    C0]  _raw_spin_lock (./include/linux/spinlock_api_smp.h:190 (discriminator 1) kernel/locking/spinlock.c:173 (discriminator 1))
[   28.311227][    C0]  ? br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88)
[   28.311228][    C0]  br_forward_delay_timer_expired (./include/linux/spinlock.h:347 net/bridge/br_stp_timer.c:88)
[   28.311230][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54)
[   28.311231][    C0]  call_timer_fn (kernel/time/timer.c:1748)
[   28.311234][    C0]  ? detach_if_pending (./include/linux/list.h:1159)
[   28.311235][    C0]  ? debug_object_active_state (lib/debugobjects.c:1122)
[   28.311239][    C0]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   28.311241][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.311243][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.311245][    C0]  __run_timers (kernel/time/timer.c:1799 kernel/time/timer.c:2374)
[   28.311246][    C0]  ? br_message_age_timer_expired (net/bridge/br_stp_timer.c:54)
[   28.311248][    C0]  ? __bpf_trace_itimer_expire (./include/trace/events/timer.h:407)
[   28.311250][    C0]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   28.311253][    C0]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[   28.311256][    C0]  run_timer_softirq (kernel/time/timer.c:2386 kernel/time/timer.c:2395 kernel/time/timer.c:2403)
[   28.311258][    C0]  ? __run_timers (./include/trace/events/timer.h:138 (discriminator 19))
[   28.311260][    C0]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[   28.311263][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.311264][    C0]  handle_softirqs (kernel/softirq.c:645)
[   28.311266][    C0]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   28.311268][    C0]  ? _local_bh_enable (kernel/softirq.c:428 (discriminator 1))
[   28.311270][    C0]  __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
[   28.311272][    C0]  irq_exit_rcu (kernel/softirq.c:784)
[   28.311273][    C0]  sysvec_apic_timer_interrupt (arch/x86/kernel/apic/apic.c:1062 (discriminator 37) arch/x86/kernel/apic/apic.c:1062 (discriminator 37))
[   28.311275][    C0]  </IRQ>
[   28.311276][    C0]  <TASK>
[   28.311276][    C0]  ? lockdep_hardirqs_on_prepare.part.0 (kernel/locking/lockdep.c:470 (discriminator 2) kernel/locking/lockdep.c:4427 (discriminator 2))
[   28.311278][    C0]  asm_sysvec_apic_timer_interrupt (./arch/x86/include/asm/idtentry.h:674)
[   28.311280][    C0] RIP: 0010:pv_native_safe_halt (./arch/x86/include/asm/irqflags.h:48 arch/x86/kernel/paravirt.c:63)
[   28.311282][    C0] Code: 48 8b 3d 94 82 68 02 e8 1f 00 00 00 48 2b 05 58 d3 a0 00 c3 0f 1f 80 00 00 00 00 f3 0f 1e fa eb 07 0f 00 2d 13 06 0e 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 82 68 02 	mov    0x2688294(%rip),%rdi        # 0x268829b
   7:	e8 1f 00 00 00       	call   0x2b
   c:	48 2b 05 58 d3 a0 00 	sub    0xa0d358(%rip),%rax        # 0xa0d36b
  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 06 0e 00 	verw   0xe0613(%rip)        # 0xe063b
  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
[   28.311284][    C0] RSP: 0018:ffffffff95c07cf8 EFLAGS: 00000296
[   28.311286][    C0] RAX: 00000000000944c9 RBX: ffffffff95c30600 RCX: ffffffff92306247
[   28.311288][    C0] RDX: ffffffff95c30600 RSI: ffffffff95511011 RDI: ffffffff94e949e0
[   28.311289][    C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[   28.311289][    C0] R10: 0000000000000000 R11: 0000000000000001 R12: 1ffffffff2b80fa2
[   28.311290][    C0] R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000014770
[   28.311292][    C0]  ? cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   28.311294][    C0]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4488)
[   28.311296][    C0]  default_idle (./arch/x86/include/asm/paravirt.h:62 arch/x86/kernel/process.c:768)
[   28.311297][    C0]  default_idle_call (kernel/sched/idle.c:122)
[   28.311299][    C0]  cpuidle_idle_call.constprop.0 (kernel/sched/idle.c:199)
[   28.311300][    C0]  ? arch_cpu_idle_exit+0x40/0x40
[   28.311302][    C0]  ? mark_tsc_async_resets (arch/x86/kernel/tsc_sync.c:49)
[   28.311305][    C0]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   28.311306][    C0]  do_idle (kernel/sched/idle.c:355)
[   28.311308][    C0]  cpu_startup_entry (kernel/sched/idle.c:454)
[   28.311310][    C0]  rest_init (init/main.c:727)
[   28.311311][    C0]  ? __cpuidle_text_end (??:?)
[   28.311314][    C0]  ? rest_init (init/main.c:727)
[   28.311316][    C0]  ? acpi_hw_set_mode (drivers/acpi/acpica/hwacpi.c:72 (discriminator 1))
[   28.311319][    C0]  ? cpus_read_unlock (./include/linux/percpu-rwsem.h:125 (discriminator 1) kernel/cpu.c:502 (discriminator 1))
[   28.311321][    C0]  ? acpi_enable (drivers/acpi/acpica/evxfevnt.c:47)
[   28.311323][    C0]  start_kernel (init/main.c:1185)
[   28.311325][    C0]  x86_64_start_reservations (arch/x86/kernel/head64.c:310)
[   28.311327][    C0]  x86_64_start_kernel (arch/x86/kernel/head64.c:291)
[   28.311328][    C0]  common_startup_64 (arch/x86/kernel/head_64.S:418)
| [  529.142815][   T12] softirqs last disabled at (12340): __fib6_clean_all (./include/linux/spinlock.h:353 net/ipv6/ip6_fib.c:2323)
| [  529.142817][   T12] Preemption disabled at:
| [  529.142817][   T12] 0x0
| [  529.142828][   T12] Tainted: [W]=WARN
[  529.142829][   T12] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  529.142831][   T12] Workqueue: netns cleanup_net
[  529.142836][   T12] Call Trace:
[  529.142838][   T12]  <TASK>
[  529.142840][   T12]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  529.142846][   T12]  __might_resched.cold (kernel/sched/core.c:9234)
[  529.142849][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[  529.142853][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  529.142856][   T12]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[  529.142859][   T12]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  529.142862][   T12]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[  529.142867][   T12]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[  529.142869][   T12]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[  529.142871][   T12]  put_chars (drivers/char/virtio_console.c:1176)
[  529.142873][   T12]  ? __send_to_port (drivers/char/virtio_console.c:654)
[  529.142874][   T12]  ? printk_get_next_message (kernel/printk/printk.c:3072)
[  529.142877][   T12]  ? console_prepend_replay (kernel/printk/printk.c:3005)
[  529.142879][   T12]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[  529.142884][   T12]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[  529.142886][   T12]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  529.142888][   T12]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  529.142890][   T12]  console_emit_next_record (kernel/printk/printk.c:3183)
[  529.142893][   T12]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[  529.142895][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  529.142896][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  529.142897][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  529.142898][   T12]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  529.142900][   T12]  ? console_flush_one_record (kernel/printk/printk.c:3247)
[  529.142902][   T12]  console_flush_one_record (kernel/printk/printk.c:3268)
[  529.142904][   T12]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[  529.142907][   T12]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[  529.142909][   T12]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  529.142911][   T12]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[  529.142912][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  529.142913][   T12]  ? lock_release (./include/trace/events/lock.h:68 (discriminator 22) kernel/locking/lockdep.c:5920 (discriminator 22))
[  529.142915][   T12]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[  529.142916][   T12]  ? __rcu_read_lock (kernel/rcu/tree_plugin.h:391 (discriminator 6))
[  529.142918][   T12]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[  529.142920][   T12]  ? vprintk_emit (kernel/printk/printk.c:2478)
[  529.142922][   T12]  vprintk_emit (kernel/printk/printk.c:2479)
[  529.142923][   T12]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[  529.142924][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  529.142925][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  529.142929][   T12]  ? trace_hardirqs_on (kernel/trace/trace_preemptirq.c:78)
[  529.142931][   T12]  _printk (kernel/printk/printk.c:2504)
[  529.142934][   T12]  ? snapshot_read.cold (user.c:?)
[  529.142936][   T12]  ? ipv6_mc_down (net/ipv6/mcast.c:1157 net/ipv6/mcast.c:2820)
[  529.142939][   T12]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[  529.142943][   T12]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[  529.142945][   T12]  br_device_event (net/bridge/br.c:111)
[  529.142948][   T12]  ? packet_sendmsg_spkt (af_packet.c:?)
[  529.142950][   T12]  ? addrconf_notify (net/ipv6/addrconf.c:3812)
[  529.142953][   T12]  notifier_call_chain (kernel/notifier.c:85)
[  529.142956][   T12]  netif_close_many (net/core/dev.c:2313 net/core/dev.c:2327 net/core/dev.c:1829)
[  529.142959][   T12]  ? __dev_close_many (net/core/dev.c:1804)
[  529.142960][   T12]  ? netif_close_many_and_unlock (net/core/dev.c:12411)
[  529.142963][   T12]  unregister_netdevice_many_notify (net/core/dev.c:12487)
[  529.142965][   T12]  ? ops_undo_list (net/core/net_namespace.c:206 net/core/net_namespace.c:253)
[  529.142966][   T12]  ? worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[  529.142969][   T12]  ? kthread (kernel/kthread.c:436)
[  529.142971][   T12]  ? ret_from_fork (arch/x86/kernel/process.c:158)
[  529.142974][   T12]  ? ret_from_fork_asm (arch/x86/entry/entry_64.S:245)
[  529.142976][   T12]  ? unregister_netdevice_queued (./include/linux/list.h:419 (discriminator 3))
[  529.142978][   T12]  ? get_rps_cpu (net/core/dev.c:5240)
[  529.142980][   T12]  default_device_exit_batch (net/core/dev.c:12589 net/core/dev.c:13288)
[  529.142981][   T12]  ? __mutex_unlock_slowpath (./include/linux/preempt.h:500 (discriminator 1) kernel/locking/mutex.c:999 (discriminator 1))
[  529.142983][   T12]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  529.142985][   T12]  ? unregister_netdevice_queue (./include/linux/list.h:173)
[  529.142986][   T12]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[  529.142988][   T12]  ? fou_exit_net (net/ipv4/fou_core.c:1228)
[  529.142991][   T12]  ops_undo_list (net/core/net_namespace.c:206 net/core/net_namespace.c:253)
[  529.142993][   T12]  ? netns_install (./include/linux/ns_common.h:26)
[  529.142995][   T12]  ? idr_destroy (lib/radix-tree.c:310 lib/radix-tree.c:674 lib/radix-tree.c:1563)
[  529.142998][   T12]  cleanup_net (net/core/net_namespace.c:706)
[  529.143000][   T12]  ? net_passive_dec (./include/linux/llist.h:241)
[  529.143001][   T12]  ? update_load_avg (kernel/sched/fair.c:5864)
[  529.143004][   T12]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[  529.143005][   T12]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[  529.143007][   T12]  process_one_work (kernel/workqueue.c:3387)
[  529.143010][   T12]  ? __queue_delayed_work (kernel/workqueue.c:2622)
[  529.143012][   T12]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[  529.143014][   T12]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[  529.143017][   T12]  worker_thread (kernel/workqueue.c:3470 kernel/workqueue.c:3551)
[  529.143030][   T12]  ? rescuer_thread (./include/linux/list.h:419 (discriminator 3))
[  529.143032][   T12]  kthread (kernel/kthread.c:436)
[  529.143033][   T12]  ? trace_irq_enable.constprop.0 (./include/trace/events/preemptirq.h:40 (discriminator 22))
[  529.143035][   T12]  ? kthread_affine_preferred (kernel/kthread.c:857)
[  529.143037][   T12]  ret_from_fork (arch/x86/kernel/process.c:158)
[  529.143038][   T12]  ? arch_exit_to_user_mode_prepare.isra.0 (arch/x86/entry/vdso/vma.c:80 (discriminator 1))
[  529.143040][   T12]  ? __switch_to (arch/x86/kernel/process_64.c:403 arch/x86/kernel/process_64.c:663)
[  529.143043][   T12]  ? kthread_affine_preferred (kernel/kthread.c:857)


Finger prints:
br_device_event:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
mark_lock_irq:mark_lock:mark_usage:__lock_acquire:_raw_spin_lock
__alloc_skb:vprintk_emit:dump_stack_lvl:__kmalloc_noprof:put_chars
__irq_exit_rcu:schedule_preempt_disabled:dump_stack_lvl:__kmalloc_noprof:put_chars
__fib6_clean_all:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print
__irq_exit_rcu:dump_stack_lvl:__kmalloc_noprof:put_chars:hvc_console_print