======================================
| [    9.721710][  T220] softirqs last disabled at (33025): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.721713][  T220] Preemption disabled at:
| [    9.721713][  T220] 0x0
| [    9.721723][  T220] Tainted: [W]=WARN
[    9.721724][  T220] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.721725][  T220] Call Trace:
[    9.721727][  T220]  <TASK>
[    9.721728][  T220]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.721735][  T220]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.721739][  T220]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.721746][  T220]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.721751][  T220]  __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))
[    9.721752][  T220]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.721759][  T220]  ? 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)
[    9.721762][  T220]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.721765][  T220]  put_chars (drivers/char/virtio_console.c:1176)
[    9.721768][  T220]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.721769][  T220]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.721772][  T220]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.721778][  T220]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.721785][  T220]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.721787][  T220]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.721790][  T220]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.721793][  T220]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.721798][  T220]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.721800][  T220]  ? 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))
[    9.721803][  T220]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.721804][  T220]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.721808][  T220]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.721812][  T220]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.721814][  T220]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.721819][  T220]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.721822][  T220]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.721824][  T220]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.721826][  T220]  ? 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)
[    9.721829][  T220]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.721831][  T220]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.721834][  T220]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.721837][  T220]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.721840][  T220]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.721843][  T220]  _printk (kernel/printk/printk.c:2504)
[    9.721847][  T220]  ? snapshot_read.cold (user.c:?)
[    9.721850][  T220]  ? 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)
[    9.721852][  T220]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.721856][  T220]  ? 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)
[    9.721859][  T220]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[    9.721862][  T220]  ? exit_notify (kernel/exit.c:780)
[    9.721864][  T220]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.721866][  T220]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.721870][  T220]  do_group_exit (kernel/exit.c:1151)
[    9.721872][  T220]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[    9.721874][  T220]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[    9.721877][  T220]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.721881][  T220]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.721884][  T220]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.721886][  T220] RIP: 0033:0x7fdfb4c6a1b8
[    9.721888][  T220] Code: Unable to access opcode bytes at 0x7fdfb4c6a18e.

Code starting with the faulting instruction
===========================================
[    9.721889][  T220] RSP: 002b:00007ffe06acf408 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[    9.721891][  T220] RAX: ffffffffffffffda RBX: 00007fdfb4d9af88 RCX: 00007fdfb4c6a1b8
[    9.721893][  T220] RDX: 00007fdfb49b4fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[    9.721894][  T220] RBP: 00007ffe06acf460 R08: 0000000000000000 R09: 0000000000000050
[    9.721894][  T220] R10: 00007ffe06acf220 R11: 0000000000000246 R12: 0000000000000001
[    9.721895][  T220] R13: 0000000000000000 R14: 00007fdfb4d99680 R15: 00007fdfb4d9afa0
| [   12.787175][  T292] softirqs last disabled at (44038): addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3946)
| [   12.787177][  T292] Preemption disabled at:
| [   12.787178][  T292] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.787186][  T292] Tainted: [W]=WARN
[   12.787187][  T292] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.787188][  T292] Call Trace:
[   12.787190][  T292]  <TASK>
[   12.787191][  T292]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.787197][  T292]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.787199][  T292]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.787203][  T292]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.787207][  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)
[   12.787212][  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))
[   12.787213][  T292]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.787219][  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)
[   12.787222][  T292]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.787226][  T292]  put_chars (drivers/char/virtio_console.c:1176)
[   12.787228][  T292]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.787229][  T292]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.787233][  T292]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.787238][  T292]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.787245][  T292]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.787248][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.787250][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.787254][  T292]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.787258][  T292]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.787260][  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))
[   12.787263][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.787264][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.787268][  T292]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.787272][  T292]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.787274][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.787279][  T292]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.787282][  T292]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.787284][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.787286][  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)
[   12.787290][  T292]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.787291][  T292]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.787294][  T292]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.787297][  T292]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.787299][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.787300][  T292]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   12.787304][  T292]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.787308][  T292]  _printk (kernel/printk/printk.c:2504)
[   12.787311][  T292]  ? snapshot_read.cold (user.c:?)
[   12.787315][  T292]  ? br_multicast_flood (??:?)
[   12.787317][  T292]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.787319][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.787320][  T292]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.787324][  T292]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   12.787328][  T292]  br_init_port (net/bridge/br_stp_if.c:39)
[   12.787331][  T292]  new_nbp (net/bridge/br_if.c:449)
[   12.787334][  T292]  br_add_if (net/bridge/br_if.c:592)
[   12.787337][  T292]  ? sync_rcu_exp_select_cpus (./include/linux/list.h:54 (discriminator 2))
[   12.787339][  T292]  ? __netdev_upper_dev_unlink (net/core/dev.c:9096)
[   12.787342][  T292]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   12.787345][  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)
[   12.787350][  T292]  ? vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   12.787352][  T292]  do_set_master (net/core/rtnetlink.c:3071)
[   12.787355][  T292]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.787358][  T292]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.787362][  T292]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.787363][  T292]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.787366][  T292]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.787369][  T292]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.787371][  T292]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.787372][  T292]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.787375][  T292]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.787377][  T292]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.787378][  T292]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.787379][  T292]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   12.787382][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.787384][  T292]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   12.787386][  T292]  ? ___sys_sendmsg (net/socket.c:2758)
[   12.787390][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.787392][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.787395][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.787396][  T292]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.787398][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.787399][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.787401][  T292]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.787403][  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)
[   12.787404][  T292]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.787406][  T292]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.787409][  T292]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.787410][  T292]  ? nla_get_range_signed (lib/nlattr.c:270)
[   12.787415][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.787417][  T292]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.787422][  T292]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.787427][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.787429][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.787434][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.787435][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.787437][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.787439][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.787443][  T292]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.787445][  T292]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.787448][  T292]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.787449][  T292]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.787454][  T292]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.787455][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.787459][  T292]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.787462][  T292]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.787465][  T292]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.787471][  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))
[   12.787473][  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))
[   12.787477][  T292]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.787481][  T292]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.787484][  T292]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.787488][  T292]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.787492][  T292]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.787495][  T292]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.787497][  T292]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   12.787502][  T292]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   12.787505][  T292]  ____sys_sendmsg (net/socket.c:2713)
[   12.787507][  T292]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.787509][  T292]  ? sock_write_iter (net/socket.c:1269)
[   12.787511][  T292]  ? move_addr_to_kernel (net/socket.c:258)
[   12.787518][  T292]  ___sys_sendmsg (net/socket.c:2767)
[   12.787521][  T292]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.787537][  T292]  __sys_sendmsg (net/socket.c:2799)
[   12.787540][  T292]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.787546][  T292]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.787549][  T292]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.787552][  T292]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.787554][  T292]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.787557][  T292] RIP: 0033:0x7f58d590054e
[   12.787560][  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
[   12.787562][  T292] RSP: 002b:00007ffe0d39f4e0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.787564][  T292] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f58d590054e
[   12.787566][  T292] RDX: 0000000000000000 RSI: 00007ffe0d39f590 RDI: 0000000000000005
[   12.787566][  T292] RBP: 00007ffe0d39f4f0 R08: 0000000000000000 R09: 0000000000000000
[   12.787567][  T292] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3ba
[   12.787568][  T292] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffe0d39fc50
| [   19.312764][  T340] softirqs last disabled at (40388): br_stp_disable_bridge (./include/linux/spinlock.h:353 net/bridge/br_stp_if.c:73)
| [   19.312766][  T340] Preemption disabled at:
| [   19.312767][  T340] 0x0
| [   19.312777][  T340] Tainted: [W]=WARN
[   19.312777][  T340] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.312784][  T340] Call Trace:
[   19.312786][  T340]  <TASK>
[   19.312788][  T340]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.312795][  T340]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.312799][  T340]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.312803][  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)
[   19.312807][  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))
[   19.312809][  T340]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.312815][  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)
[   19.312818][  T340]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.312821][  T340]  put_chars (drivers/char/virtio_console.c:1176)
[   19.312823][  T340]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   19.312825][  T340]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.312828][  T340]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.312831][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.312834][  T340]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.312838][  T340]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.312842][  T340]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   19.312844][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.312846][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.312850][  T340]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.312852][  T340]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   19.312856][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.312858][  T340]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.312862][  T340]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.312866][  T340]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.312867][  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))
[   19.312870][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.312872][  T340]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.312876][  T340]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.312880][  T340]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.312882][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.312887][  T340]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.312890][  T340]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.312892][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.312894][  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)
[   19.312897][  T340]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.312899][  T340]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.312902][  T340]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.312905][  T340]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.312907][  T340]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.312909][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.312912][  T340]  _printk (kernel/printk/printk.c:2504)
[   19.312916][  T340]  ? snapshot_read.cold (user.c:?)
[   19.312923][  T340]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   19.312928][  T340]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   19.312931][  T340]  br_stp_disable_bridge (net/bridge/br_stp_if.c:76)
[   19.312934][  T340]  br_dev_stop (net/bridge/br_device.c:193)
[   19.312936][  T340]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   19.312939][  T340]  __dev_close_many (net/core/dev.c:1798)
[   19.312944][  T340]  ? netif_open (net/core/dev.c:1755)
[   19.312947][  T340]  ? __local_bh_enable_ip (kernel/softirq.c:478)
[   19.312952][  T340]  __dev_change_flags (net/core/dev.c:1811 net/core/dev.c:9810)
[   19.312956][  T340]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   19.312959][  T340]  ? synchronize_rcu_normal (kernel/rcu/tree.c:3360)
[   19.312963][  T340]  netif_change_flags (net/core/dev.c:9877)
[   19.312967][  T340]  dev_change_flags (net/core/dev_api.c:68)
[   19.312969][  T340]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   19.312972][  T340]  cycle_netdev (drivers/net/vrf.c:1001)
[   19.312977][  T340]  vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   19.312980][  T340]  do_set_master (net/core/rtnetlink.c:3055)
[   19.312983][  T340]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   19.312987][  T340]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   19.312990][  T340]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   19.312991][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   19.312993][  T340]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   19.312996][  T340]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.312998][  T340]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.313000][  T340]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.313002][  T340]  ? kasan_save_stack (mm/kasan/common.c:58)
[   19.313005][  T340]  ? kasan_save_stack (mm/kasan/common.c:57)
[   19.313006][  T340]  ? kasan_save_track (mm/kasan/common.c:78)
[   19.313007][  T340]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   19.313009][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.313011][  T340]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   19.313014][  T340]  ? ___sys_sendmsg (net/socket.c:2758)
[   19.313018][  T340]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.313020][  T340]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.313022][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.313024][  T340]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.313026][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.313027][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.313028][  T340]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   19.313031][  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)
[   19.313033][  T340]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   19.313035][  T340]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.313038][  T340]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   19.313040][  T340]  ? nla_get_range_signed (lib/nlattr.c:270)
[   19.313044][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.313046][  T340]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   19.313051][  T340]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   19.313057][  T340]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.313059][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.313063][  T340]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.313065][  T340]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.313067][  T340]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.313069][  T340]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.313073][  T340]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.313075][  T340]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   19.313078][  T340]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.313079][  T340]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.313084][  T340]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.313086][  T340]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.313089][  T340]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   19.313092][  T340]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.313095][  T340]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   19.313101][  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))
[   19.313103][  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))
[   19.313107][  T340]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   19.313111][  T340]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   19.313114][  T340]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.313118][  T340]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   19.313122][  T340]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   19.313126][  T340]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.313127][  T340]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   19.313133][  T340]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   19.313135][  T340]  ____sys_sendmsg (net/socket.c:2713)
[   19.313138][  T340]  ? copy_msghdr_from_user (net/socket.c:2650)
[   19.313140][  T340]  ? sock_write_iter (net/socket.c:1269)
[   19.313141][  T340]  ? move_addr_to_kernel (net/socket.c:258)
[   19.313149][  T340]  ___sys_sendmsg (net/socket.c:2767)
[   19.313151][  T340]  ? copy_msghdr_from_user (net/socket.c:2619)
[   19.313167][  T340]  __sys_sendmsg (net/socket.c:2799)
[   19.313170][  T340]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   19.313177][  T340]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.313180][  T340]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.313182][  T340]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.313185][  T340]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.313187][  T340] RIP: 0033:0x7f4efe4be54e
[   19.313190][  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
[   19.313191][  T340] RSP: 002b:00007ffd4f9295a0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   19.313194][  T340] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f4efe4be54e
[   19.313195][  T340] RDX: 0000000000000000 RSI: 00007ffd4f929650 RDI: 0000000000000005
[   19.313196][  T340] RBP: 00007ffd4f9295b0 R08: 0000000000000000 R09: 0000000000000000
[   19.313197][  T340] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3c0
[   19.313198][  T340] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd4f929d10
| [   22.067324][  T399] softirqs last disabled at (32802): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   22.067326][  T399] Preemption disabled at:
| [   22.067327][  T399] vprintk_emit (kernel/printk/printk.c:2471)
| [   22.067335][  T399] Tainted: [W]=WARN
[   22.067336][  T399] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.067337][  T399] Call Trace:
[   22.067339][  T399]  <TASK>
[   22.067341][  T399]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.067347][  T399]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   22.067349][  T399]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.067353][  T399]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.067357][  T399]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   22.067361][  T399]  __kmalloc_noprof (./include/linux/sched/mm.h:322 (discriminator 2) mm/slub.c:4636 (discriminator 2) mm/slub.c:4974 (discriminator 2) mm/slub.c:5413 (discriminator 2) mm/slub.c:5439 (discriminator 2))
[   22.067363][  T399]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.067369][  T399]  ? do_raw_spin_unlock (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:32 ./include/asm-generic/qspinlock.h:58 kernel/locking/spinlock_debug.c:101 kernel/locking/spinlock_debug.c:141)
[   22.067372][  T399]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.067376][  T399]  put_chars (drivers/char/virtio_console.c:1176)
[   22.067378][  T399]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.067385][  T399]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.067392][  T399]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.067395][  T399]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.067400][  T399]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.067404][  T399]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.067406][  T399]  ? console_flush_one_record (./include/linux/rcupdate.h:314 (discriminator 2) ./include/linux/srcu.h:439 (discriminator 2) kernel/printk/printk.c:291 (discriminator 2) kernel/printk/printk.c:3246 (discriminator 2))
[   22.067409][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.067411][  T399]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.067415][  T399]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.067419][  T399]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.067421][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.067427][  T399]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.067429][  T399]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.067431][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.067433][  T399]  ? lock_acquire (./include/linux/srcutree.h:374 ./include/linux/srcu.h:541 ./include/linux/srcu.h:645 ./include/trace/events/lock.h:23 ./include/trace/events/lock.h:23 kernel/locking/lockdep.c:5871)
[   22.067437][  T399]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.067438][  T399]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.067441][  T399]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.067444][  T399]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.067445][  T399]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.067449][  T399]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.067450][  T399]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.067453][  T399]  ? ____sys_sendmsg (net/socket.c:2713)
[   22.067454][  T399]  ? ___sys_sendmsg (net/socket.c:2767)
[   22.067456][  T399]  ? __sys_sendmsg (net/socket.c:2799)
[   22.067458][  T399]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.067463][  T399]  _printk (kernel/printk/printk.c:2504)
[   22.067467][  T399]  ? snapshot_read.cold (user.c:?)
[   22.067471][  T399]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   22.067475][  T399]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   22.067478][  T399]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   22.067481][  T399]  ? netdev_notice (net/core/dev.c:13194)
[   22.067485][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.067487][  T399]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   22.067490][  T399]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   22.067492][  T399]  ? mutex_is_locked (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:3188 kernel/locking/mutex.h:48 kernel/locking/mutex.c:65)
[   22.067494][  T399]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   22.067498][  T399]  dev_set_allmulti (net/core/dev_api.c:315)
[   22.067502][  T399]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   22.067505][  T399]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   22.067511][  T399]  br_dev_delete (net/bridge/br_if.c:387)
[   22.067514][  T399]  rtnl_dellink (net/core/rtnetlink.c:3651 net/core/rtnetlink.c:3694)
[   22.067516][  T399]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.067518][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.067520][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.067522][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.067543][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.067545][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.067548][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.067550][  T399]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.067553][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.067557][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.067559][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.067561][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.067563][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.067566][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.067569][  T399]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   22.067572][  T399]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.067573][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.067578][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.067579][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.067583][  T399]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.067585][  T399]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.067588][  T399]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   22.067594][  T399]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) ./include/net/netns/generic.h:48 (discriminator 2) net/netlink/af_netlink.c:334 (discriminator 2))
[   22.067596][  T399]  ? netlink_deliver_tap (./include/linux/rcupdate.h:319 (discriminator 2) ./include/linux/rcupdate.h:880 (discriminator 2) net/netlink/af_netlink.c:341 (discriminator 2))
[   22.067601][  T399]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   22.067604][  T399]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   22.067607][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.067611][  T399]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.067615][  T399]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   22.067619][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.067621][  T399]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   22.067626][  T399]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.067629][  T399]  ____sys_sendmsg (net/socket.c:2713)
[   22.067631][  T399]  ? copy_msghdr_from_user (net/socket.c:2650)
[   22.067633][  T399]  ? sock_write_iter (net/socket.c:1269)
[   22.067635][  T399]  ? move_addr_to_kernel (net/socket.c:258)
[   22.067642][  T399]  ___sys_sendmsg (net/socket.c:2767)
[   22.067645][  T399]  ? copy_msghdr_from_user (net/socket.c:2619)
[   22.067661][  T399]  __sys_sendmsg (net/socket.c:2799)
[   22.067664][  T399]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   22.067672][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.067675][  T399]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.067677][  T399]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.067680][  T399]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.067683][  T399] RIP: 0033:0x7f887cb8d54e
[   22.067686][  T399] Code: 4d 89 d8 e8 b4 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 b4 bd 00 00       	call   0xbdbc
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[   22.067688][  T399] RSP: 002b:00007ffeecc09de0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   22.067690][  T399] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f887cb8d54e
[   22.067692][  T399] RDX: 0000000000000000 RSI: 00007ffeecc09e90 RDI: 0000000000000005
[   22.067692][  T399] RBP: 00007ffeecc09df0 R08: 0000000000000000 R09: 0000000000000000
[   22.067693][  T399] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3c3
[   22.067694][  T399] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffeecc0a550
| [   24.572256][  T487] softirqs last disabled at (19464): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   24.572259][  T487] Preemption disabled at:
| [   24.572259][  T487] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.572268][  T487] Tainted: [W]=WARN
[   24.572269][  T487] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.572270][  T487] Call Trace:
[   24.572271][  T487]  <TASK>
[   24.572273][  T487]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.572279][  T487]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.572281][  T487]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.572285][  T487]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.572289][  T487]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   24.572293][  T487]  __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))
[   24.572295][  T487]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.572301][  T487]  ? 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)
[   24.572304][  T487]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.572308][  T487]  put_chars (drivers/char/virtio_console.c:1176)
[   24.572310][  T487]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.572316][  T487]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.572323][  T487]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.572326][  T487]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.572331][  T487]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.572335][  T487]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.572337][  T487]  ? 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))
[   24.572340][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.572342][  T487]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.572346][  T487]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.572350][  T487]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.572352][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.572357][  T487]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.572360][  T487]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.572362][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.572363][  T487]  ? 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)
[   24.572367][  T487]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.572368][  T487]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.572371][  T487]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.572374][  T487]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.572377][  T487]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   24.572381][  T487]  _printk (kernel/printk/printk.c:2504)
[   24.572385][  T487]  ? snapshot_read.cold (user.c:?)
[   24.572387][  T487]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   24.572389][  T487]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.572392][  T487]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.572394][  T487]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   24.572398][  T487]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   24.572400][  T487]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   24.572402][  T487]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   24.572405][  T487]  ? netdev_notice (net/core/dev.c:13194)
[   24.572408][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.572411][  T487]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.572413][  T487]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   24.572416][  T487]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   24.572418][  T487]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   24.572420][  T487]  ? register_netdev (net/core/dev.c:11618)
[   24.572422][  T487]  ? 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))
[   24.572427][  T487]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   24.572429][  T487]  ? __kernel_text_address (kernel/extable.c:79)
[   24.572432][  T487]  ? write_profile (profile.c:?)
[   24.572435][  T487]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   24.572441][  T487]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   24.572444][  T487]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   24.572446][  T487]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   24.572448][  T487]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   24.572449][  T487]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   24.572453][  T487]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   24.572455][  T487]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.572456][  T487]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.572459][  T487]  ? kasan_save_stack (mm/kasan/common.c:58)
[   24.572460][  T487]  ? kasan_save_stack (mm/kasan/common.c:57)
[   24.572462][  T487]  ? kasan_save_track (mm/kasan/common.c:78)
[   24.572463][  T487]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   24.572465][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.572467][  T487]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   24.572470][  T487]  ? ___sys_sendmsg (net/socket.c:2758)
[   24.572474][  T487]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.572476][  T487]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   24.572478][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.572480][  T487]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.572481][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.572482][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.572484][  T487]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   24.572486][  T487]  ? __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)
[   24.572488][  T487]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   24.572489][  T487]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   24.572493][  T487]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   24.572494][  T487]  ? nla_get_range_signed (lib/nlattr.c:270)
[   24.572498][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.572501][  T487]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   24.572506][  T487]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   24.572511][  T487]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.572513][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.572517][  T487]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.572519][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.572521][  T487]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.572522][  T487]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.572526][  T487]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.572528][  T487]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   24.572531][  T487]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.572533][  T487]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.572537][  T487]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.572539][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.572542][  T487]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   24.572545][  T487]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.572548][  T487]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   24.572554][  T487]  ? 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))
[   24.572556][  T487]  ? 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))
[   24.572561][  T487]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   24.572565][  T487]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   24.572567][  T487]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.572571][  T487]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   24.572575][  T487]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   24.572579][  T487]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.572580][  T487]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   24.572585][  T487]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   24.572588][  T487]  ____sys_sendmsg (net/socket.c:2713)
[   24.572590][  T487]  ? copy_msghdr_from_user (net/socket.c:2650)
[   24.572592][  T487]  ? sock_write_iter (net/socket.c:1269)
[   24.572594][  T487]  ? move_addr_to_kernel (net/socket.c:258)
[   24.572601][  T487]  ___sys_sendmsg (net/socket.c:2767)
[   24.572604][  T487]  ? copy_msghdr_from_user (net/socket.c:2619)
[   24.572619][  T487]  __sys_sendmsg (net/socket.c:2799)
[   24.572622][  T487]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   24.572628][  T487]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.572631][  T487]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.572634][  T487]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   24.572636][  T487]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.572638][  T487] RIP: 0033:0x7ff46f8eb54e
[   24.572642][  T487] 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
[   24.572644][  T487] RSP: 002b:00007ffcb7815b90 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   24.572647][  T487] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007ff46f8eb54e
[   24.572648][  T487] RDX: 0000000000000000 RSI: 00007ffcb7815c40 RDI: 0000000000000005
[   24.572649][  T487] RBP: 00007ffcb7815ba0 R08: 0000000000000000 R09: 0000000000000000
[   24.572650][  T487] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3c5
[   24.572650][  T487] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcb7816310
| [   32.950166][  T677] softirqs last disabled at (19926): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   32.950168][  T677] Preemption disabled at:
| [   32.950169][  T677] vprintk_emit (kernel/printk/printk.c:2471)
| [   32.950178][  T677] Tainted: [W]=WARN
[   32.950178][  T677] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.950180][  T677] Call Trace:
[   32.950181][  T677]  <TASK>
[   32.950183][  T677]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   32.950189][  T677]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   32.950190][  T677]  __might_resched.cold (kernel/sched/core.c:9234)
[   32.950195][  T677]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   32.950199][  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)
[   32.950203][  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))
[   32.950205][  T677]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.950211][  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)
[   32.950214][  T677]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.950218][  T677]  put_chars (drivers/char/virtio_console.c:1176)
[   32.950220][  T677]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   32.950226][  T677]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   32.950234][  T677]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   32.950237][  T677]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.950242][  T677]  console_emit_next_record (kernel/printk/printk.c:3183)
[   32.950246][  T677]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   32.950248][  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))
[   32.950251][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.950253][  T677]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.950257][  T677]  console_flush_one_record (kernel/printk/printk.c:3268)
[   32.950261][  T677]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   32.950263][  T677]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.950269][  T677]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   32.950272][  T677]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   32.950273][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.950275][  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)
[   32.950279][  T677]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   32.950280][  T677]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   32.950283][  T677]  vprintk_emit (kernel/printk/printk.c:2479)
[   32.950286][  T677]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   32.950289][  T677]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   32.950294][  T677]  _printk (kernel/printk/printk.c:2504)
[   32.950297][  T677]  ? snapshot_read.cold (user.c:?)
[   32.950299][  T677]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.950301][  T677]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.950304][  T677]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.950306][  T677]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   32.950310][  T677]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   32.950313][  T677]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   32.950315][  T677]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   32.950318][  T677]  ? netdev_notice (net/core/dev.c:13194)
[   32.950320][  T677]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.950323][  T677]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.950326][  T677]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   32.950329][  T677]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   32.950331][  T677]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   32.950333][  T677]  ? register_netdev (net/core/dev.c:11618)
[   32.950335][  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))
[   32.950340][  T677]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   32.950342][  T677]  ? __kernel_text_address (kernel/extable.c:79)
[   32.950344][  T677]  ? write_profile (profile.c:?)
[   32.950348][  T677]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   32.950354][  T677]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   32.950357][  T677]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   32.950359][  T677]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   32.950360][  T677]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   32.950362][  T677]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   32.950366][  T677]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.950367][  T677]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.950369][  T677]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.950372][  T677]  ? kasan_save_stack (mm/kasan/common.c:58)
[   32.950374][  T677]  ? kasan_save_stack (mm/kasan/common.c:57)
[   32.950375][  T677]  ? kasan_save_track (mm/kasan/common.c:78)
[   32.950376][  T677]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   32.950379][  T677]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.950380][  T677]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   32.950383][  T677]  ? ___sys_sendmsg (net/socket.c:2758)
[   32.950387][  T677]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.950389][  T677]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   32.950391][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.950393][  T677]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.950394][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.950395][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.950397][  T677]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   32.950399][  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)
[   32.950401][  T677]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   32.950403][  T677]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   32.950406][  T677]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   32.950407][  T677]  ? nla_get_range_signed (lib/nlattr.c:270)
[   32.950412][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.950414][  T677]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   32.950419][  T677]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   32.950424][  T677]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.950426][  T677]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.950430][  T677]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.950432][  T677]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.950434][  T677]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.950436][  T677]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.950440][  T677]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.950442][  T677]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   32.950445][  T677]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   32.950446][  T677]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.950450][  T677]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.950452][  T677]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.950456][  T677]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   32.950459][  T677]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   32.950462][  T677]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   32.950468][  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))
[   32.950470][  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))
[   32.950474][  T677]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   32.950478][  T677]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   32.950481][  T677]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.950485][  T677]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   32.950489][  T677]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   32.950492][  T677]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.950494][  T677]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   32.950499][  T677]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   32.950502][  T677]  ____sys_sendmsg (net/socket.c:2713)
[   32.950504][  T677]  ? copy_msghdr_from_user (net/socket.c:2650)
[   32.950506][  T677]  ? sock_write_iter (net/socket.c:1269)
[   32.950508][  T677]  ? move_addr_to_kernel (net/socket.c:258)
[   32.950515][  T677]  ___sys_sendmsg (net/socket.c:2767)
[   32.950518][  T677]  ? copy_msghdr_from_user (net/socket.c:2619)
[   32.950533][  T677]  __sys_sendmsg (net/socket.c:2799)
[   32.950536][  T677]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   32.950542][  T677]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.950545][  T677]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   32.950548][  T677]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   32.950551][  T677]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.950553][  T677] RIP: 0033:0x7f5716e1654e
[   32.950557][  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
[   32.950559][  T677] RSP: 002b:00007ffffb851190 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   32.950561][  T677] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f5716e1654e
[   32.950562][  T677] RDX: 0000000000000000 RSI: 00007ffffb851240 RDI: 0000000000000005
[   32.950563][  T677] RBP: 00007ffffb8511a0 R08: 0000000000000000 R09: 0000000000000000
[   32.950564][  T677] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a91c3ce


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