======================================
| [    9.952297][  T219] softirqs last disabled at (29925): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.952299][  T219] Preemption disabled at:
| [    9.952300][  T219] 0x0
| [    9.952310][  T219] Tainted: [W]=WARN
[    9.952311][  T219] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.952312][  T219] Call Trace:
[    9.952314][  T219]  <TASK>
[    9.952315][  T219]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.952321][  T219]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.952326][  T219]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.952330][  T219]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.952334][  T219]  __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))
[    9.952336][  T219]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.952343][  T219]  ? 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)
[    9.952346][  T219]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.952349][  T219]  put_chars (drivers/char/virtio_console.c:1176)
[    9.952351][  T219]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.952353][  T219]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.952356][  T219]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.952361][  T219]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.952368][  T219]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.952371][  T219]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.952373][  T219]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.952377][  T219]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.952381][  T219]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.952383][  T219]  ? 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))
[    9.952386][  T219]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.952387][  T219]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.952391][  T219]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.952395][  T219]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.952397][  T219]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.952402][  T219]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.952405][  T219]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.952407][  T219]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.952409][  T219]  ? 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)
[    9.952412][  T219]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.952414][  T219]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.952416][  T219]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.952419][  T219]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.952422][  T219]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.952426][  T219]  _printk (kernel/printk/printk.c:2504)
[    9.952430][  T219]  ? snapshot_read.cold (user.c:?)
[    9.952432][  T219]  ? 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)
[    9.952435][  T219]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.952439][  T219]  ? 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)
[    9.952441][  T219]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[    9.952445][  T219]  ? exit_notify (kernel/exit.c:780)
[    9.952446][  T219]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.952449][  T219]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.952452][  T219]  do_group_exit (kernel/exit.c:1151)
[    9.952455][  T219]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[    9.952457][  T219]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[    9.952459][  T219]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.952463][  T219]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.952466][  T219]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.952468][  T219] RIP: 0033:0x7f97372c51b8
[    9.952470][  T219] Code: Unable to access opcode bytes at 0x7f97372c518e.

Code starting with the faulting instruction
===========================================
[    9.952471][  T219] RSP: 002b:00007fff62fa1f48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[    9.952474][  T219] RAX: ffffffffffffffda RBX: 00007f97373f5f88 RCX: 00007f97372c51b8
[    9.952475][  T219] RDX: 00007f973700ffc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[    9.952476][  T219] RBP: 00007fff62fa1fa0 R08: 0000000000000000 R09: 0000000000000050
[    9.952477][  T219] R10: 00007fff62fa1d60 R11: 0000000000000246 R12: 0000000000000001
[    9.952477][  T219] R13: 0000000000000000 R14: 00007f97373f4680 R15: 00007f97373f5fa0
| [   10.971744][  T245] softirqs last disabled at (19348): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   10.971747][  T245] Preemption disabled at:
| [   10.971748][  T245] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.971757][  T245] Tainted: [W]=WARN
[   10.971758][  T245] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.971759][  T245] Call Trace:
[   10.971761][  T245]  <TASK>
[   10.971762][  T245]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.971769][  T245]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.971770][  T245]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.971774][  T245]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.971782][  T245]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.971787][  T245]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   10.971789][  T245]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.971795][  T245]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   10.971798][  T245]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.971802][  T245]  put_chars (drivers/char/virtio_console.c:1176)
[   10.971804][  T245]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.971810][  T245]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.971818][  T245]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.971821][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.971825][  T245]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.971829][  T245]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.971831][  T245]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   10.971834][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.971836][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.971840][  T245]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.971844][  T245]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.971846][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.971851][  T245]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.971854][  T245]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.971856][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.971857][  T245]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   10.971861][  T245]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.971863][  T245]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.971865][  T245]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.971868][  T245]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.971870][  T245]  ? save_trace (kernel/locking/lockdep.c:589)
[   10.971874][  T245]  _printk (kernel/printk/printk.c:2504)
[   10.971878][  T245]  ? snapshot_read.cold (user.c:?)
[   10.971881][  T245]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   10.971883][  T245]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   10.971887][  T245]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   10.971890][  T245]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   10.971892][  T245]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   10.971894][  T245]  ? netdev_notice (net/core/dev.c:13194)
[   10.971897][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.971900][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.971902][  T245]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   10.971906][  T245]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   10.971908][  T245]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   10.971910][  T245]  ? register_netdev (net/core/dev.c:11618)
[   10.971911][  T245]  ? is_bpf_text_address (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) kernel/bpf/core.c:751 (discriminator 2))
[   10.971916][  T245]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   10.971919][  T245]  ? __kernel_text_address (kernel/extable.c:79)
[   10.971921][  T245]  ? write_profile (profile.c:?)
[   10.971925][  T245]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   10.971931][  T245]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   10.971934][  T245]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   10.971936][  T245]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   10.971937][  T245]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   10.971940][  T245]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   10.971943][  T245]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.971945][  T245]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.971947][  T245]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.971949][  T245]  ? kasan_save_stack (mm/kasan/common.c:58)
[   10.971951][  T245]  ? kasan_save_stack (mm/kasan/common.c:57)
[   10.971952][  T245]  ? kasan_save_track (mm/kasan/common.c:78)
[   10.971953][  T245]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   10.971956][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.971958][  T245]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   10.971961][  T245]  ? ___sys_sendmsg (net/socket.c:2758)
[   10.971964][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.971966][  T245]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.971969][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.971970][  T245]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.971972][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.971973][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.971975][  T245]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   10.971977][  T245]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   10.971980][  T245]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   10.971981][  T245]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.971985][  T245]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   10.971986][  T245]  ? nla_get_range_signed (lib/nlattr.c:270)
[   10.971995][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.971998][  T245]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   10.972003][  T245]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   10.972008][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.972010][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.972014][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.972016][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.972018][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.972019][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.972023][  T245]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.972025][  T245]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   10.972028][  T245]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.972029][  T245]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.972034][  T245]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.972036][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.972039][  T245]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   10.972043][  T245]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.972046][  T245]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   10.972052][  T245]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   10.972054][  T245]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   10.972058][  T245]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   10.972062][  T245]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   10.972064][  T245]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.972068][  T245]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   10.972072][  T245]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   10.972076][  T245]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.972078][  T245]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   10.972083][  T245]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   10.972086][  T245]  ____sys_sendmsg (net/socket.c:2713)
[   10.972088][  T245]  ? copy_msghdr_from_user (net/socket.c:2650)
[   10.972090][  T245]  ? sock_write_iter (net/socket.c:1269)
[   10.972092][  T245]  ? move_addr_to_kernel (net/socket.c:258)
[   10.972099][  T245]  ___sys_sendmsg (net/socket.c:2767)
[   10.972101][  T245]  ? copy_msghdr_from_user (net/socket.c:2619)
[   10.972117][  T245]  __sys_sendmsg (net/socket.c:2799)
[   10.972120][  T245]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   10.972126][  T245]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.972128][  T245]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.972131][  T245]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.972134][  T245]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.972136][  T245] RIP: 0033:0x7f2bc415554e
[   10.972140][  T245] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   10.972142][  T245] RSP: 002b:00007ffd8a735490 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   10.972144][  T245] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f2bc415554e
[   10.972146][  T245] RDX: 0000000000000000 RSI: 00007ffd8a735540 RDI: 0000000000000005
[   10.972146][  T245] RBP: 00007ffd8a7354a0 R08: 0000000000000000 R09: 0000000000000000
[   10.972147][  T245] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91703a
[   10.972148][  T245] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd8a735c10
| [   13.226333][  T292] softirqs last disabled at (36322): addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3946)
| [   13.226335][  T292] Preemption disabled at:
| [   13.226336][  T292] vprintk_emit (kernel/printk/printk.c:2471)
| [   13.226344][  T292] Tainted: [W]=WARN
[   13.226345][  T292] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   13.226346][  T292] Call Trace:
[   13.226348][  T292]  <TASK>
[   13.226349][  T292]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   13.226355][  T292]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   13.226356][  T292]  __might_resched.cold (kernel/sched/core.c:9234)
[   13.226361][  T292]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   13.226365][  T292]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   13.226369][  T292]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   13.226371][  T292]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.226378][  T292]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   13.226380][  T292]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   13.226384][  T292]  put_chars (drivers/char/virtio_console.c:1176)
[   13.226387][  T292]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   13.226388][  T292]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.226391][  T292]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.226396][  T292]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   13.226404][  T292]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   13.226406][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.226408][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.226412][  T292]  console_emit_next_record (kernel/printk/printk.c:3183)
[   13.226417][  T292]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   13.226418][  T292]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   13.226421][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.226423][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.226427][  T292]  console_flush_one_record (kernel/printk/printk.c:3268)
[   13.226431][  T292]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   13.226433][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.226438][  T292]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   13.226440][  T292]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   13.226442][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.226444][  T292]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   13.226448][  T292]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   13.226449][  T292]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   13.226452][  T292]  vprintk_emit (kernel/printk/printk.c:2479)
[   13.226455][  T292]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   13.226457][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.226458][  T292]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   13.226462][  T292]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   13.226466][  T292]  _printk (kernel/printk/printk.c:2504)
[   13.226469][  T292]  ? snapshot_read.cold (user.c:?)
[   13.226473][  T292]  ? br_multicast_flood (??:?)
[   13.226476][  T292]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.226478][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.226479][  T292]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.226483][  T292]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   13.226487][  T292]  br_init_port (net/bridge/br_stp_if.c:39)
[   13.226490][  T292]  new_nbp (net/bridge/br_if.c:449)
[   13.226493][  T292]  br_add_if (net/bridge/br_if.c:592)
[   13.226496][  T292]  ? sync_rcu_exp_select_cpus (./include/linux/list.h:54 (discriminator 2))
[   13.226498][  T292]  ? __netdev_upper_dev_unlink (net/core/dev.c:9096)
[   13.226501][  T292]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   13.226505][  T292]  ? cycle_netdev (./include/linux/instrumented.h:82 ./include/asm-generic/bitops/instrumented-non-atomic.h:141 ./include/linux/netdevice.h:4084 drivers/net/vrf.c:998)
[   13.226510][  T292]  ? vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   13.226512][  T292]  do_set_master (net/core/rtnetlink.c:3071)
[   13.226515][  T292]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   13.226518][  T292]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   13.226522][  T292]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   13.226523][  T292]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   13.226526][  T292]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   13.226529][  T292]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   13.226531][  T292]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   13.226533][  T292]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   13.226535][  T292]  ? kasan_save_stack (mm/kasan/common.c:58)
[   13.226537][  T292]  ? kasan_save_stack (mm/kasan/common.c:57)
[   13.226539][  T292]  ? kasan_save_track (mm/kasan/common.c:78)
[   13.226540][  T292]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   13.226542][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.226544][  T292]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   13.226547][  T292]  ? ___sys_sendmsg (net/socket.c:2758)
[   13.226551][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.226553][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.226555][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.226557][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   13.226559][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.226560][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.226561][  T292]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   13.226563][  T292]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   13.226565][  T292]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   13.226567][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   13.226570][  T292]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   13.226571][  T292]  ? nla_get_range_signed (lib/nlattr.c:270)
[   13.226576][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.226578][  T292]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   13.226583][  T292]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   13.226588][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.226590][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.226595][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.226596][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.226599][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.226601][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.226604][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   13.226606][  T292]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   13.226609][  T292]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.226611][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   13.226615][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   13.226617][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.226620][  T292]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   13.226623][  T292]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   13.226626][  T292]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   13.226632][  T292]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   13.226635][  T292]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   13.226639][  T292]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   13.226643][  T292]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   13.226645][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   13.226650][  T292]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   13.226653][  T292]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   13.226657][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   13.226659][  T292]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   13.226664][  T292]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   13.226667][  T292]  ____sys_sendmsg (net/socket.c:2713)
[   13.226669][  T292]  ? copy_msghdr_from_user (net/socket.c:2650)
[   13.226671][  T292]  ? sock_write_iter (net/socket.c:1269)
[   13.226673][  T292]  ? move_addr_to_kernel (net/socket.c:258)
[   13.226680][  T292]  ___sys_sendmsg (net/socket.c:2767)
[   13.226683][  T292]  ? copy_msghdr_from_user (net/socket.c:2619)
[   13.226698][  T292]  __sys_sendmsg (net/socket.c:2799)
[   13.226701][  T292]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   13.226707][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   13.226710][  T292]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   13.226713][  T292]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   13.226715][  T292]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   13.226718][  T292] RIP: 0033:0x7f3eee8bd54e
[   13.226721][  T292] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   13.226723][  T292] RSP: 002b:00007ffe6867ed60 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   13.226725][  T292] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3eee8bd54e
[   13.226727][  T292] RDX: 0000000000000000 RSI: 00007ffe6867ee10 RDI: 0000000000000005
[   13.226728][  T292] RBP: 00007ffe6867ed70 R08: 0000000000000000 R09: 0000000000000000
[   13.226728][  T292] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91703c
[   13.226729][  T292] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe6867f4d0
| [   19.804785][  T340] softirqs last disabled at (39610): br_stp_disable_bridge (./include/linux/spinlock.h:353 net/bridge/br_stp_if.c:73)
| [   19.804787][  T340] Preemption disabled at:
| [   19.804788][  T340] 0x0
| [   19.804798][  T340] Tainted: [W]=WARN
[   19.804799][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.804801][  T340] Call Trace:
[   19.804803][  T340]  <TASK>
[   19.804805][  T340]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.804811][  T340]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.804816][  T340]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.804820][  T340]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   19.804824][  T340]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   19.804826][  T340]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.804833][  T340]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   19.804835][  T340]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.804839][  T340]  put_chars (drivers/char/virtio_console.c:1176)
[   19.804841][  T340]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   19.804843][  T340]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.804846][  T340]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.804849][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.804852][  T340]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.804856][  T340]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.804860][  T340]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   19.804862][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.804864][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.804868][  T340]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.804870][  T340]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   19.804873][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.804875][  T340]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.804879][  T340]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.804883][  T340]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.804885][  T340]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   19.804888][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.804890][  T340]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.804894][  T340]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.804898][  T340]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.804900][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.804905][  T340]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.804908][  T340]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.804910][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.804912][  T340]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   19.804915][  T340]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.804917][  T340]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.804920][  T340]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.804923][  T340]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.804925][  T340]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.804927][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.804930][  T340]  _printk (kernel/printk/printk.c:2504)
[   19.804934][  T340]  ? snapshot_read.cold (user.c:?)
[   19.804941][  T340]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   19.804946][  T340]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   19.804949][  T340]  br_stp_disable_bridge (net/bridge/br_stp_if.c:76)
[   19.804952][  T340]  br_dev_stop (net/bridge/br_device.c:193)
[   19.804954][  T340]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   19.804957][  T340]  __dev_close_many (net/core/dev.c:1798)
[   19.804961][  T340]  ? netif_open (net/core/dev.c:1755)
[   19.804965][  T340]  ? __local_bh_enable_ip (kernel/softirq.c:478)
[   19.804970][  T340]  __dev_change_flags (net/core/dev.c:1811 net/core/dev.c:9810)
[   19.804973][  T340]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   19.804976][  T340]  ? synchronize_rcu_normal (kernel/rcu/tree.c:3360)
[   19.804981][  T340]  netif_change_flags (net/core/dev.c:9877)
[   19.804984][  T340]  dev_change_flags (net/core/dev_api.c:68)
[   19.804986][  T340]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   19.804990][  T340]  cycle_netdev (drivers/net/vrf.c:1001)
[   19.804995][  T340]  vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   19.804997][  T340]  do_set_master (net/core/rtnetlink.c:3055)
[   19.805001][  T340]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   19.805004][  T340]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   19.805007][  T340]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   19.805009][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   19.805011][  T340]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   19.805014][  T340]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.805016][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.805018][  T340]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.805020][  T340]  ? kasan_save_stack (mm/kasan/common.c:58)
[   19.805022][  T340]  ? kasan_save_stack (mm/kasan/common.c:57)
[   19.805024][  T340]  ? kasan_save_track (mm/kasan/common.c:78)
[   19.805025][  T340]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   19.805027][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.805029][  T340]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   19.805032][  T340]  ? ___sys_sendmsg (net/socket.c:2758)
[   19.805036][  T340]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.805038][  T340]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.805041][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.805042][  T340]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.805044][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.805045][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.805047][  T340]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   19.805049][  T340]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   19.805052][  T340]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   19.805053][  T340]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.805057][  T340]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   19.805058][  T340]  ? nla_get_range_signed (lib/nlattr.c:270)
[   19.805063][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.805065][  T340]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   19.805070][  T340]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   19.805075][  T340]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.805077][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.805086][  T340]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.805088][  T340]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.805090][  T340]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.805092][  T340]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.805096][  T340]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.805098][  T340]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   19.805101][  T340]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.805102][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.805107][  T340]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.805109][  T340]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.805112][  T340]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   19.805115][  T340]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.805118][  T340]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   19.805124][  T340]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   19.805126][  T340]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   19.805131][  T340]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   19.805134][  T340]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   19.805137][  T340]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.805141][  T340]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   19.805145][  T340]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   19.805149][  T340]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.805151][  T340]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   19.805156][  T340]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   19.805159][  T340]  ____sys_sendmsg (net/socket.c:2713)
[   19.805161][  T340]  ? copy_msghdr_from_user (net/socket.c:2650)
[   19.805163][  T340]  ? sock_write_iter (net/socket.c:1269)
[   19.805165][  T340]  ? move_addr_to_kernel (net/socket.c:258)
[   19.805172][  T340]  ___sys_sendmsg (net/socket.c:2767)
[   19.805175][  T340]  ? copy_msghdr_from_user (net/socket.c:2619)
[   19.805190][  T340]  __sys_sendmsg (net/socket.c:2799)
[   19.805193][  T340]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   19.805200][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.805203][  T340]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.805206][  T340]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.805208][  T340]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.805211][  T340] RIP: 0033:0x7f104e53954e
[   19.805213][  T340] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   19.805214][  T340] RSP: 002b:00007ffdb749d6c0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   19.805217][  T340] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f104e53954e
[   19.805218][  T340] RDX: 0000000000000000 RSI: 00007ffdb749d770 RDI: 0000000000000005
[   19.805219][  T340] RBP: 00007ffdb749d6d0 R08: 0000000000000000 R09: 0000000000000000
[   19.805220][  T340] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a917043
[   19.805221][  T340] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffdb749de30
| [   22.632033][  T398] softirqs last disabled at (36844): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   22.632036][  T398] Preemption disabled at:
| [   22.632036][  T398] vprintk_emit (kernel/printk/printk.c:2471)
| [   22.632045][  T398] Tainted: [W]=WARN
[   22.632046][  T398] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.632048][  T398] Call Trace:
[   22.632049][  T398]  <TASK>
[   22.632051][  T398]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.632056][  T398]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   22.632058][  T398]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.632062][  T398]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.632067][  T398]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   22.632071][  T398]  __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))
[   22.632073][  T398]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.632079][  T398]  ? 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)
[   22.632082][  T398]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.632086][  T398]  put_chars (drivers/char/virtio_console.c:1176)
[   22.632088][  T398]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.632095][  T398]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.632102][  T398]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.632110][  T398]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.632115][  T398]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.632119][  T398]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.632121][  T398]  ? 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))
[   22.632124][  T398]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.632127][  T398]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.632131][  T398]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.632135][  T398]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.632137][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.632142][  T398]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.632145][  T398]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.632147][  T398]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.632149][  T398]  ? 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)
[   22.632152][  T398]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.632154][  T398]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.632157][  T398]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.632160][  T398]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.632161][  T398]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.632164][  T398]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.632166][  T398]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.632168][  T398]  ? ____sys_sendmsg (net/socket.c:2713)
[   22.632170][  T398]  ? ___sys_sendmsg (net/socket.c:2767)
[   22.632171][  T398]  ? __sys_sendmsg (net/socket.c:2799)
[   22.632173][  T398]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.632179][  T398]  _printk (kernel/printk/printk.c:2504)
[   22.632183][  T398]  ? snapshot_read.cold (user.c:?)
[   22.632187][  T398]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   22.632191][  T398]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   22.632195][  T398]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   22.632197][  T398]  ? netdev_notice (net/core/dev.c:13194)
[   22.632202][  T398]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.632203][  T398]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   22.632206][  T398]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   22.632208][  T398]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   22.632210][  T398]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   22.632214][  T398]  dev_set_allmulti (net/core/dev_api.c:315)
[   22.632218][  T398]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   22.632222][  T398]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   22.632228][  T398]  br_dev_delete (net/bridge/br_if.c:387)
[   22.632231][  T398]  rtnl_dellink (net/core/rtnetlink.c:3651 net/core/rtnetlink.c:3694)
[   22.632233][  T398]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.632235][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.632236][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.632239][  T398]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.632261][  T398]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.632263][  T398]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.632266][  T398]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.632268][  T398]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.632270][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.632275][  T398]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.632276][  T398]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.632278][  T398]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.632280][  T398]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.632284][  T398]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.632286][  T398]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   22.632289][  T398]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.632291][  T398]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.632295][  T398]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.632297][  T398]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.632301][  T398]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.632302][  T398]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.632305][  T398]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   22.632312][  T398]  ? 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))
[   22.632314][  T398]  ? 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))
[   22.632319][  T398]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   22.632323][  T398]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   22.632325][  T398]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.632329][  T398]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.632333][  T398]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   22.632337][  T398]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.632339][  T398]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   22.632344][  T398]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.632347][  T398]  ____sys_sendmsg (net/socket.c:2713)
[   22.632349][  T398]  ? copy_msghdr_from_user (net/socket.c:2650)
[   22.632351][  T398]  ? sock_write_iter (net/socket.c:1269)
[   22.632353][  T398]  ? move_addr_to_kernel (net/socket.c:258)
[   22.632360][  T398]  ___sys_sendmsg (net/socket.c:2767)
[   22.632363][  T398]  ? copy_msghdr_from_user (net/socket.c:2619)
[   22.632379][  T398]  __sys_sendmsg (net/socket.c:2799)
[   22.632382][  T398]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   22.632388][  T398]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.632391][  T398]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.632393][  T398]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.632396][  T398]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.632398][  T398] RIP: 0033:0x7f440a62854e
[   22.632402][  T398] 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
[   22.632404][  T398] RSP: 002b:00007fff3154f640 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   22.632406][  T398] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f440a62854e
[   22.632408][  T398] RDX: 0000000000000000 RSI: 00007fff3154f6f0 RDI: 0000000000000005
[   22.632408][  T398] RBP: 00007fff3154f650 R08: 0000000000000000 R09: 0000000000000000
[   22.632409][  T398] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a917046
[   22.632410][  T398] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007fff3154fdb0
| [   25.133688][  T486] softirqs last disabled at (27492): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   25.133690][  T486] Preemption disabled at:
| [   25.133691][  T486] vprintk_emit (kernel/printk/printk.c:2471)
| [   25.133699][  T486] Tainted: [W]=WARN
[   25.133700][  T486] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   25.133702][  T486] Call Trace:
[   25.133703][  T486]  <TASK>
[   25.133705][  T486]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   25.133710][  T486]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   25.133712][  T486]  __might_resched.cold (kernel/sched/core.c:9234)
[   25.133716][  T486]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   25.133720][  T486]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   25.133725][  T486]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   25.133727][  T486]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.133733][  T486]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   25.133736][  T486]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   25.133740][  T486]  put_chars (drivers/char/virtio_console.c:1176)
[   25.133742][  T486]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   25.133748][  T486]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   25.133756][  T486]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   25.133759][  T486]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.133763][  T486]  console_emit_next_record (kernel/printk/printk.c:3183)
[   25.133767][  T486]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   25.133769][  T486]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   25.133772][  T486]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.133775][  T486]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.133782][  T486]  console_flush_one_record (kernel/printk/printk.c:3268)
[   25.133786][  T486]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   25.133787][  T486]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.133793][  T486]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   25.133795][  T486]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   25.133797][  T486]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.133799][  T486]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   25.133802][  T486]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   25.133804][  T486]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   25.133807][  T486]  vprintk_emit (kernel/printk/printk.c:2479)
[   25.133810][  T486]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   25.133812][  T486]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   25.133817][  T486]  _printk (kernel/printk/printk.c:2504)
[   25.133821][  T486]  ? snapshot_read.cold (user.c:?)
[   25.133823][  T486]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.133825][  T486]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.133828][  T486]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.133830][  T486]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   25.133834][  T486]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   25.133837][  T486]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   25.133839][  T486]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   25.133842][  T486]  ? netdev_notice (net/core/dev.c:13194)
[   25.133844][  T486]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.133847][  T486]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.133850][  T486]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   25.133853][  T486]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   25.133855][  T486]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   25.133857][  T486]  ? register_netdev (net/core/dev.c:11618)
[   25.133858][  T486]  ? is_bpf_text_address (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) kernel/bpf/core.c:751 (discriminator 2))
[   25.133864][  T486]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   25.133866][  T486]  ? __kernel_text_address (kernel/extable.c:79)
[   25.133869][  T486]  ? write_profile (profile.c:?)
[   25.133873][  T486]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   25.133878][  T486]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   25.133881][  T486]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   25.133884][  T486]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   25.133885][  T486]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   25.133887][  T486]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   25.133890][  T486]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   25.133892][  T486]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   25.133893][  T486]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   25.133896][  T486]  ? kasan_save_stack (mm/kasan/common.c:58)
[   25.133897][  T486]  ? kasan_save_stack (mm/kasan/common.c:57)
[   25.133899][  T486]  ? kasan_save_track (mm/kasan/common.c:78)
[   25.133900][  T486]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   25.133902][  T486]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.133904][  T486]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   25.133907][  T486]  ? ___sys_sendmsg (net/socket.c:2758)
[   25.133911][  T486]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.133912][  T486]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.133915][  T486]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.133916][  T486]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   25.133918][  T486]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.133919][  T486]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.133921][  T486]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   25.133923][  T486]  ? __mutex_lock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.c:89 kernel/locking/mutex.c:134 kernel/locking/mutex.c:649 kernel/locking/mutex.c:821)
[   25.133924][  T486]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   25.133926][  T486]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   25.133929][  T486]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   25.133930][  T486]  ? nla_get_range_signed (lib/nlattr.c:270)
[   25.133935][  T486]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.133937][  T486]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   25.133942][  T486]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   25.133947][  T486]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.133949][  T486]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.133954][  T486]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.133955][  T486]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.133957][  T486]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.133959][  T486]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.133963][  T486]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   25.133965][  T486]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   25.133968][  T486]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.133969][  T486]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   25.133973][  T486]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   25.133975][  T486]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.133978][  T486]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   25.133982][  T486]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   25.133984][  T486]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   25.133991][  T486]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   25.133993][  T486]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   25.133997][  T486]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   25.134001][  T486]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   25.134003][  T486]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   25.134007][  T486]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   25.134011][  T486]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   25.134015][  T486]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   25.134017][  T486]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   25.134022][  T486]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   25.134024][  T486]  ____sys_sendmsg (net/socket.c:2713)
[   25.134027][  T486]  ? copy_msghdr_from_user (net/socket.c:2650)
[   25.134029][  T486]  ? sock_write_iter (net/socket.c:1269)
[   25.134030][  T486]  ? move_addr_to_kernel (net/socket.c:258)
[   25.134037][  T486]  ___sys_sendmsg (net/socket.c:2767)
[   25.134040][  T486]  ? copy_msghdr_from_user (net/socket.c:2619)
[   25.134055][  T486]  __sys_sendmsg (net/socket.c:2799)
[   25.134058][  T486]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   25.134064][  T486]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   25.134067][  T486]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   25.134070][  T486]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   25.134073][  T486]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   25.134075][  T486] RIP: 0033:0x7ff3305c754e
[   25.134078][  T486] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   25.134080][  T486] RSP: 002b:00007ffdb0b43110 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   25.134082][  T486] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007ff3305c754e
[   25.134084][  T486] RDX: 0000000000000000 RSI: 00007ffdb0b431c0 RDI: 0000000000000005
[   25.134085][  T486] RBP: 00007ffdb0b43120 R08: 0000000000000000 R09: 0000000000000000
[   25.134085][  T486] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a917048
[   25.134086][  T486] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffdb0b43890
| [   33.451421][  T677] softirqs last disabled at (22794): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   33.451423][  T677] Preemption disabled at:
| [   33.451424][  T677] vprintk_emit (kernel/printk/printk.c:2471)
| [   33.451433][  T677] Tainted: [W]=WARN
[   33.451434][  T677] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   33.451435][  T677] Call Trace:
[   33.451437][  T677]  <TASK>
[   33.451439][  T677]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   33.451445][  T677]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   33.451446][  T677]  __might_resched.cold (kernel/sched/core.c:9234)
[   33.451450][  T677]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   33.451455][  T677]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   33.451459][  T677]  __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))
[   33.451461][  T677]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.451467][  T677]  ? 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)
[   33.451470][  T677]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   33.451474][  T677]  put_chars (drivers/char/virtio_console.c:1176)
[   33.451476][  T677]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   33.451482][  T677]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   33.451490][  T677]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   33.451493][  T677]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.451498][  T677]  console_emit_next_record (kernel/printk/printk.c:3183)
[   33.451502][  T677]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   33.451503][  T677]  ? 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))
[   33.451507][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.451509][  T677]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.451513][  T677]  console_flush_one_record (kernel/printk/printk.c:3268)
[   33.451517][  T677]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   33.451519][  T677]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.451524][  T677]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   33.451527][  T677]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   33.451529][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.451531][  T677]  ? 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)
[   33.451534][  T677]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   33.451536][  T677]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   33.451538][  T677]  vprintk_emit (kernel/printk/printk.c:2479)
[   33.451541][  T677]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   33.451544][  T677]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   33.451549][  T677]  _printk (kernel/printk/printk.c:2504)
[   33.451552][  T677]  ? snapshot_read.cold (user.c:?)
[   33.451554][  T677]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   33.451557][  T677]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   33.451559][  T677]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   33.451561][  T677]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   33.451565][  T677]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   33.451568][  T677]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   33.451570][  T677]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   33.451573][  T677]  ? netdev_notice (net/core/dev.c:13194)
[   33.451576][  T677]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.451579][  T677]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   33.451581][  T677]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   33.451584][  T677]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   33.451586][  T677]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   33.451589][  T677]  ? register_netdev (net/core/dev.c:11618)
[   33.451590][  T677]  ? is_bpf_text_address (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) kernel/bpf/core.c:751 (discriminator 2))
[   33.451595][  T677]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   33.451598][  T677]  ? __kernel_text_address (kernel/extable.c:79)
[   33.451601][  T677]  ? write_profile (profile.c:?)
[   33.451604][  T677]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   33.451610][  T677]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   33.451614][  T677]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   33.451616][  T677]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   33.451617][  T677]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   33.451619][  T677]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   33.451622][  T677]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   33.451624][  T677]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   33.451626][  T677]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   33.451628][  T677]  ? kasan_save_stack (mm/kasan/common.c:58)
[   33.451630][  T677]  ? kasan_save_stack (mm/kasan/common.c:57)
[   33.451631][  T677]  ? kasan_save_track (mm/kasan/common.c:78)
[   33.451632][  T677]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   33.451634][  T677]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.451636][  T677]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   33.451639][  T677]  ? ___sys_sendmsg (net/socket.c:2758)
[   33.451643][  T677]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.451645][  T677]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   33.451647][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.451649][  T677]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   33.451650][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.451651][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.451653][  T677]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   33.451655][  T677]  ? __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)
[   33.451656][  T677]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   33.451658][  T677]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   33.451661][  T677]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   33.451662][  T677]  ? nla_get_range_signed (lib/nlattr.c:270)
[   33.451667][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.451669][  T677]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   33.451674][  T677]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   33.451679][  T677]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.451681][  T677]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.451686][  T677]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.451687][  T677]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.451689][  T677]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.451691][  T677]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   33.451695][  T677]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   33.451697][  T677]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   33.451700][  T677]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   33.451701][  T677]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   33.451705][  T677]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   33.451707][  T677]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.451711][  T677]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   33.451713][  T677]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   33.451716][  T677]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   33.451722][  T677]  ? 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))
[   33.451724][  T677]  ? 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))
[   33.451729][  T677]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   33.451733][  T677]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   33.451735][  T677]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   33.451739][  T677]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   33.451743][  T677]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   33.451747][  T677]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   33.451748][  T677]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   33.451754][  T677]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   33.451756][  T677]  ____sys_sendmsg (net/socket.c:2713)
[   33.451759][  T677]  ? copy_msghdr_from_user (net/socket.c:2650)
[   33.451761][  T677]  ? sock_write_iter (net/socket.c:1269)
[   33.451762][  T677]  ? move_addr_to_kernel (net/socket.c:258)
[   33.451769][  T677]  ___sys_sendmsg (net/socket.c:2767)
[   33.451772][  T677]  ? copy_msghdr_from_user (net/socket.c:2619)
[   33.451791][  T677]  __sys_sendmsg (net/socket.c:2799)
[   33.451794][  T677]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   33.451800][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   33.451803][  T677]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   33.451806][  T677]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   33.451809][  T677]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   33.451811][  T677] RIP: 0033:0x7fe3ce02a54e
[   33.451815][  T677] 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
[   33.451817][  T677] RSP: 002b:00007fff376d3dd0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   33.451820][  T677] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fe3ce02a54e
[   33.451821][  T677] RDX: 0000000000000000 RSI: 00007fff376d3e80 RDI: 0000000000000005
[   33.451822][  T677] RBP: 00007fff376d3de0 R08: 0000000000000000 R09: 0000000000000000
[   33.451823][  T677] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a917050


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