======================================
| [    9.513059][  T215] softirqs last disabled at (26663): __irq_exit_rcu (kernel/softirq.c:679 kernel/softirq.c:519 kernel/softirq.c:767)
| [    9.513061][  T215] Preemption disabled at:
| [    9.513062][  T215] 0x0
| [    9.513071][  T215] Tainted: [W]=WARN
[    9.513072][  T215] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[    9.513074][  T215] Call Trace:
[    9.513075][  T215]  <TASK>
[    9.513077][  T215]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[    9.513083][  T215]  __might_resched.cold (kernel/sched/core.c:9234)
[    9.513088][  T215]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[    9.513092][  T215]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[    9.513096][  T215]  __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))
[    9.513098][  T215]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.513105][  T215]  ? 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)
[    9.513107][  T215]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[    9.513111][  T215]  put_chars (drivers/char/virtio_console.c:1176)
[    9.513113][  T215]  ? __send_to_port (drivers/char/virtio_console.c:654)
[    9.513115][  T215]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[    9.513118][  T215]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[    9.513123][  T215]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[    9.513130][  T215]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[    9.513133][  T215]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.513135][  T215]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.513139][  T215]  console_emit_next_record (kernel/printk/printk.c:3183)
[    9.513143][  T215]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[    9.513145][  T215]  ? 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))
[    9.513148][  T215]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.513149][  T215]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[    9.513153][  T215]  console_flush_one_record (kernel/printk/printk.c:3268)
[    9.513157][  T215]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[    9.513159][  T215]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.513164][  T215]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[    9.513167][  T215]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[    9.513169][  T215]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.513171][  T215]  ? 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)
[    9.513174][  T215]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[    9.513176][  T215]  ? vprintk_emit (kernel/printk/printk.c:2478)
[    9.513179][  T215]  vprintk_emit (kernel/printk/printk.c:2479)
[    9.513182][  T215]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[    9.513184][  T215]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[    9.513188][  T215]  _printk (kernel/printk/printk.c:2504)
[    9.513195][  T215]  ? snapshot_read.cold (user.c:?)
[    9.513198][  T215]  ? 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)
[    9.513201][  T215]  ? __rwlock_init (kernel/locking/spinlock_debug.c:48)
[    9.513205][  T215]  ? 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)
[    9.513207][  T215]  do_exit.cold (kernel/exit.c:889 (discriminator 4) kernel/exit.c:1043 (discriminator 4))
[    9.513211][  T215]  ? exit_notify (kernel/exit.c:780)
[    9.513213][  T215]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[    9.513215][  T215]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[    9.513219][  T215]  do_group_exit (kernel/exit.c:1151)
[    9.513221][  T215]  __x64_sys_exit_group (kernel/exit.c:1162 kernel/exit.c:1160 kernel/exit.c:1160)
[    9.513223][  T215]  x64_sys_call (./arch/x86/include/generated/asm/syscalls_64.h:232)
[    9.513226][  T215]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[    9.513230][  T215]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[    9.513233][  T215]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[    9.513235][  T215] RIP: 0033:0x7fb7b2eef1b8
[    9.513237][  T215] Code: Unable to access opcode bytes at 0x7fb7b2eef18e.

Code starting with the faulting instruction
===========================================
[    9.513238][  T215] RSP: 002b:00007ffdbc63f9f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
[    9.513240][  T215] RAX: ffffffffffffffda RBX: 00007fb7b301ff88 RCX: 00007fb7b2eef1b8
[    9.513242][  T215] RDX: 00007fb7b2c39fc8 RSI: fffffffffffffeb8 RDI: 0000000000000000
[    9.513242][  T215] RBP: 00007ffdbc63fa50 R08: 0000000000000000 R09: 0000000000000050
[    9.513243][  T215] R10: 00007ffdbc63f810 R11: 0000000000000246 R12: 0000000000000001
[    9.513244][  T215] R13: 0000000000000000 R14: 00007fb7b301e680 R15: 00007fb7b301ffa0
| [   10.545592][  T246] softirqs last disabled at (18954): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   10.545595][  T246] Preemption disabled at:
| [   10.545595][  T246] vprintk_emit (kernel/printk/printk.c:2471)
| [   10.545603][  T246] Tainted: [W]=WARN
[   10.545604][  T246] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   10.545606][  T246] Call Trace:
[   10.545608][  T246]  <TASK>
[   10.545609][  T246]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   10.545615][  T246]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   10.545617][  T246]  __might_resched.cold (kernel/sched/core.c:9234)
[   10.545622][  T246]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   10.545626][  T246]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   10.545630][  T246]  __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))
[   10.545632][  T246]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.545638][  T246]  ? 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)
[   10.545641][  T246]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   10.545645][  T246]  put_chars (drivers/char/virtio_console.c:1176)
[   10.545647][  T246]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   10.545653][  T246]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   10.545660][  T246]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   10.545663][  T246]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.545668][  T246]  console_emit_next_record (kernel/printk/printk.c:3183)
[   10.545672][  T246]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   10.545673][  T246]  ? 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))
[   10.545676][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.545679][  T246]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.545683][  T246]  console_flush_one_record (kernel/printk/printk.c:3268)
[   10.545687][  T246]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   10.545689][  T246]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.545694][  T246]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   10.545697][  T246]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   10.545701][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.545703][  T246]  ? 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)
[   10.545707][  T246]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   10.545708][  T246]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   10.545711][  T246]  vprintk_emit (kernel/printk/printk.c:2479)
[   10.545714][  T246]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   10.545716][  T246]  ? save_trace (kernel/locking/lockdep.c:589)
[   10.545720][  T246]  _printk (kernel/printk/printk.c:2504)
[   10.545723][  T246]  ? snapshot_read.cold (user.c:?)
[   10.545727][  T246]  ? validate_chain (kernel/locking/lockdep.c:159 kernel/locking/lockdep.c:191 kernel/locking/lockdep.c:3928)
[   10.545729][  T246]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   10.545733][  T246]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   10.545736][  T246]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   10.545738][  T246]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   10.545740][  T246]  ? netdev_notice (net/core/dev.c:13194)
[   10.545743][  T246]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.545746][  T246]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.545748][  T246]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   10.545752][  T246]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   10.545754][  T246]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   10.545756][  T246]  ? register_netdev (net/core/dev.c:11618)
[   10.545757][  T246]  ? 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))
[   10.545762][  T246]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   10.545765][  T246]  ? __kernel_text_address (kernel/extable.c:79)
[   10.545767][  T246]  ? write_profile (profile.c:?)
[   10.545771][  T246]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   10.545777][  T246]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   10.545780][  T246]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   10.545782][  T246]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   10.545783][  T246]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   10.545786][  T246]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   10.545789][  T246]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   10.545792][  T246]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   10.545793][  T246]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   10.545796][  T246]  ? kasan_save_stack (mm/kasan/common.c:58)
[   10.545798][  T246]  ? kasan_save_stack (mm/kasan/common.c:57)
[   10.545799][  T246]  ? kasan_save_track (mm/kasan/common.c:78)
[   10.545800][  T246]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   10.545802][  T246]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.545804][  T246]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   10.545807][  T246]  ? ___sys_sendmsg (net/socket.c:2758)
[   10.545811][  T246]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.545813][  T246]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.545815][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.545817][  T246]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   10.545818][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.545819][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.545821][  T246]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   10.545823][  T246]  ? __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)
[   10.545826][  T246]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   10.545828][  T246]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   10.545831][  T246]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   10.545832][  T246]  ? nla_get_range_signed (lib/nlattr.c:270)
[   10.545837][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.545839][  T246]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   10.545844][  T246]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   10.545849][  T246]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.545851][  T246]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.545855][  T246]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.545857][  T246]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.545859][  T246]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.545861][  T246]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.545865][  T246]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   10.545867][  T246]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   10.545870][  T246]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.545871][  T246]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   10.545876][  T246]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   10.545877][  T246]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.545881][  T246]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   10.545884][  T246]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   10.545887][  T246]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   10.545893][  T246]  ? 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))
[   10.545895][  T246]  ? 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))
[   10.545899][  T246]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   10.545903][  T246]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   10.545906][  T246]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   10.545910][  T246]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   10.545914][  T246]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   10.545917][  T246]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   10.545919][  T246]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   10.545924][  T246]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   10.545927][  T246]  ____sys_sendmsg (net/socket.c:2713)
[   10.545929][  T246]  ? copy_msghdr_from_user (net/socket.c:2650)
[   10.545931][  T246]  ? sock_write_iter (net/socket.c:1269)
[   10.545933][  T246]  ? move_addr_to_kernel (net/socket.c:258)
[   10.545940][  T246]  ___sys_sendmsg (net/socket.c:2767)
[   10.545943][  T246]  ? copy_msghdr_from_user (net/socket.c:2619)
[   10.545958][  T246]  __sys_sendmsg (net/socket.c:2799)
[   10.545961][  T246]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   10.545967][  T246]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   10.545970][  T246]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   10.545973][  T246]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   10.545975][  T246]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   10.545977][  T246] RIP: 0033:0x7f326057a54e
[   10.545981][  T246] 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
[   10.545983][  T246] RSP: 002b:00007ffd307a0da0 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   10.545986][  T246] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f326057a54e
[   10.545987][  T246] RDX: 0000000000000000 RSI: 00007ffd307a0e50 RDI: 0000000000000005
[   10.545988][  T246] RBP: 00007ffd307a0db0 R08: 0000000000000000 R09: 0000000000000000
[   10.545989][  T246] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f38d
[   10.545989][  T246] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd307a1520
| [   12.782175][  T293] softirqs last disabled at (48262): addrconf_ifdown.isra.0 (net/ipv6/addrconf.c:3946)
| [   12.782177][  T293] Preemption disabled at:
| [   12.782177][  T293] vprintk_emit (kernel/printk/printk.c:2471)
| [   12.782186][  T293] Tainted: [W]=WARN
[   12.782187][  T293] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   12.782189][  T293] Call Trace:
[   12.782190][  T293]  <TASK>
[   12.782192][  T293]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   12.782197][  T293]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   12.782199][  T293]  __might_resched.cold (kernel/sched/core.c:9234)
[   12.782204][  T293]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   12.782208][  T293]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   12.782216][  T293]  __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))
[   12.782218][  T293]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.782224][  T293]  ? 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)
[   12.782227][  T293]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   12.782231][  T293]  put_chars (drivers/char/virtio_console.c:1176)
[   12.782233][  T293]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   12.782235][  T293]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.782238][  T293]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.782243][  T293]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   12.782251][  T293]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   12.782253][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.782255][  T293]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.782259][  T293]  console_emit_next_record (kernel/printk/printk.c:3183)
[   12.782263][  T293]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   12.782265][  T293]  ? 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))
[   12.782268][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.782270][  T293]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.782273][  T293]  console_flush_one_record (kernel/printk/printk.c:3268)
[   12.782277][  T293]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   12.782279][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.782284][  T293]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   12.782287][  T293]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   12.782289][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.782290][  T293]  ? 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)
[   12.782294][  T293]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   12.782296][  T293]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   12.782298][  T293]  vprintk_emit (kernel/printk/printk.c:2479)
[   12.782301][  T293]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   12.782303][  T293]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.782305][  T293]  ? _raw_spin_unlock_irqrestore (./include/linux/spinlock_api_smp.h:211 (discriminator 1) kernel/locking/spinlock.c:221 (discriminator 1))
[   12.782309][  T293]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   12.782312][  T293]  _printk (kernel/printk/printk.c:2504)
[   12.782316][  T293]  ? snapshot_read.cold (user.c:?)
[   12.782319][  T293]  ? br_multicast_flood (??:?)
[   12.782322][  T293]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.782323][  T293]  ? rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.782325][  T293]  ? rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.782329][  T293]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   12.782333][  T293]  br_init_port (net/bridge/br_stp_if.c:39)
[   12.782335][  T293]  new_nbp (net/bridge/br_if.c:449)
[   12.782339][  T293]  br_add_if (net/bridge/br_if.c:592)
[   12.782341][  T293]  ? sync_rcu_exp_select_cpus (./include/linux/list.h:54 (discriminator 2))
[   12.782343][  T293]  ? __netdev_upper_dev_unlink (net/core/dev.c:9096)
[   12.782346][  T293]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   12.782349][  T293]  ? 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)
[   12.782354][  T293]  ? vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   12.782356][  T293]  do_set_master (net/core/rtnetlink.c:3071)
[   12.782359][  T293]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   12.782362][  T293]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   12.782366][  T293]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   12.782367][  T293]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   12.782370][  T293]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   12.782373][  T293]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   12.782375][  T293]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   12.782376][  T293]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   12.782379][  T293]  ? kasan_save_stack (mm/kasan/common.c:58)
[   12.782381][  T293]  ? kasan_save_stack (mm/kasan/common.c:57)
[   12.782382][  T293]  ? kasan_save_track (mm/kasan/common.c:78)
[   12.782383][  T293]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   12.782385][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.782387][  T293]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   12.782390][  T293]  ? ___sys_sendmsg (net/socket.c:2758)
[   12.782393][  T293]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.782395][  T293]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.782398][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.782399][  T293]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   12.782401][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.782402][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.782404][  T293]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   12.782406][  T293]  ? __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)
[   12.782407][  T293]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   12.782409][  T293]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   12.782412][  T293]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   12.782413][  T293]  ? nla_get_range_signed (lib/nlattr.c:270)
[   12.782418][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.782420][  T293]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   12.782425][  T293]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   12.782430][  T293]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.782432][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.782437][  T293]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.782439][  T293]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.782441][  T293]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.782442][  T293]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.782446][  T293]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   12.782448][  T293]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   12.782451][  T293]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.782452][  T293]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   12.782456][  T293]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   12.782458][  T293]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.782462][  T293]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   12.782465][  T293]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   12.782468][  T293]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   12.782474][  T293]  ? 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))
[   12.782476][  T293]  ? 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))
[   12.782480][  T293]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   12.782484][  T293]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   12.782486][  T293]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   12.782490][  T293]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   12.782494][  T293]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   12.782498][  T293]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   12.782499][  T293]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   12.782505][  T293]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   12.782507][  T293]  ____sys_sendmsg (net/socket.c:2713)
[   12.782510][  T293]  ? copy_msghdr_from_user (net/socket.c:2650)
[   12.782512][  T293]  ? sock_write_iter (net/socket.c:1269)
[   12.782513][  T293]  ? move_addr_to_kernel (net/socket.c:258)
[   12.782520][  T293]  ___sys_sendmsg (net/socket.c:2767)
[   12.782523][  T293]  ? copy_msghdr_from_user (net/socket.c:2619)
[   12.782538][  T293]  __sys_sendmsg (net/socket.c:2799)
[   12.782541][  T293]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   12.782547][  T293]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   12.782550][  T293]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   12.782553][  T293]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   12.782555][  T293]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   12.782557][  T293] RIP: 0033:0x7ff44e1c954e
[   12.782561][  T293] 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
[   12.782563][  T293] RSP: 002b:00007ffcb51df760 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   12.782565][  T293] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff44e1c954e
[   12.782567][  T293] RDX: 0000000000000000 RSI: 00007ffcb51df810 RDI: 0000000000000005
[   12.782568][  T293] RBP: 00007ffcb51df770 R08: 0000000000000000 R09: 0000000000000000
[   12.782568][  T293] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f390
[   12.782569][  T293] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcb51dfed0
| [   19.326419][  T341] softirqs last disabled at (35038): br_stp_disable_bridge (./include/linux/spinlock.h:353 net/bridge/br_stp_if.c:73)
| [   19.326421][  T341] Preemption disabled at:
| [   19.326421][  T341] 0x0
| [   19.326431][  T341] Tainted: [W]=WARN
[   19.326432][  T341] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   19.326434][  T341] Call Trace:
[   19.326436][  T341]  <TASK>
[   19.326437][  T341]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   19.326443][  T341]  __might_resched.cold (kernel/sched/core.c:9234)
[   19.326448][  T341]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   19.326452][  T341]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   19.326457][  T341]  __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))
[   19.326459][  T341]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.326465][  T341]  ? 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)
[   19.326468][  T341]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   19.326472][  T341]  put_chars (drivers/char/virtio_console.c:1176)
[   19.326473][  T341]  ? prb_final_commit (kernel/printk/printk_ringbuffer.c:1842)
[   19.326476][  T341]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   19.326478][  T341]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.326481][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.326484][  T341]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.326488][  T341]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   19.326492][  T341]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   19.326494][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.326496][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.326500][  T341]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   19.326502][  T341]  ? console_emit_next_record (kernel/printk/printk.c:3095 (discriminator 2) kernel/printk/printk.c:3182 (discriminator 2))
[   19.326505][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.326507][  T341]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.326511][  T341]  console_emit_next_record (kernel/printk/printk.c:3183)
[   19.326515][  T341]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   19.326517][  T341]  ? 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))
[   19.326520][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.326522][  T341]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.326526][  T341]  console_flush_one_record (kernel/printk/printk.c:3268)
[   19.326530][  T341]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   19.326532][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.326537][  T341]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   19.326540][  T341]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   19.326541][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.326543][  T341]  ? 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)
[   19.326547][  T341]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   19.326548][  T341]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   19.326551][  T341]  vprintk_emit (kernel/printk/printk.c:2479)
[   19.326554][  T341]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   19.326556][  T341]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.326558][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.326562][  T341]  _printk (kernel/printk/printk.c:2504)
[   19.326565][  T341]  ? snapshot_read.cold (user.c:?)
[   19.326572][  T341]  br_set_state (net/bridge/br_stp.c:57 (discriminator 2))
[   19.326577][  T341]  br_stp_disable_port (net/bridge/br_stp_if.c:106)
[   19.326580][  T341]  br_stp_disable_bridge (net/bridge/br_stp_if.c:76)
[   19.326583][  T341]  br_dev_stop (net/bridge/br_device.c:193)
[   19.326585][  T341]  ? rtnl_is_locked (net/core/rtnetlink.c:169)
[   19.326588][  T341]  __dev_close_many (net/core/dev.c:1798)
[   19.326592][  T341]  ? netif_open (net/core/dev.c:1755)
[   19.326594][  T341]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.326596][  T341]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   19.326600][  T341]  __dev_change_flags (net/core/dev.c:1811 net/core/dev.c:9810)
[   19.326604][  T341]  ? netif_set_allmulti (./include/net/netdev_lock.h:33)
[   19.326607][  T341]  ? synchronize_rcu_normal (kernel/rcu/tree.c:3360)
[   19.326611][  T341]  netif_change_flags (net/core/dev.c:9877)
[   19.326615][  T341]  dev_change_flags (net/core/dev_api.c:68)
[   19.326617][  T341]  ? kernel_text_address (kernel/extable.c:125 kernel/extable.c:94)
[   19.326620][  T341]  cycle_netdev (drivers/net/vrf.c:1001)
[   19.326625][  T341]  vrf_del_slave (drivers/net/vrf.c:1068 drivers/net/vrf.c:1075)
[   19.326627][  T341]  do_set_master (net/core/rtnetlink.c:3055)
[   19.326631][  T341]  do_setlink.isra.0 (net/core/rtnetlink.c:3273 (discriminator 1))
[   19.326634][  T341]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   19.326638][  T341]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   19.326639][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   19.326641][  T341]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   19.326644][  T341]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   19.326646][  T341]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   19.326648][  T341]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   19.326650][  T341]  ? kasan_save_stack (mm/kasan/common.c:58)
[   19.326652][  T341]  ? kasan_save_stack (mm/kasan/common.c:57)
[   19.326654][  T341]  ? kasan_save_track (mm/kasan/common.c:78)
[   19.326655][  T341]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   19.326657][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.326659][  T341]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   19.326662][  T341]  ? ___sys_sendmsg (net/socket.c:2758)
[   19.326665][  T341]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.326667][  T341]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.326670][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.326672][  T341]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   19.326673][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.326674][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.326676][  T341]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   19.326678][  T341]  ? __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)
[   19.326680][  T341]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   19.326682][  T341]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   19.326686][  T341]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   19.326687][  T341]  ? nla_get_range_signed (lib/nlattr.c:270)
[   19.326691][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.326694][  T341]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   19.326701][  T341]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   19.326706][  T341]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.326708][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.326712][  T341]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.326714][  T341]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.326716][  T341]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.326718][  T341]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.326722][  T341]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   19.326724][  T341]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   19.326727][  T341]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.326728][  T341]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   19.326733][  T341]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   19.326735][  T341]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.326738][  T341]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   19.326741][  T341]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   19.326744][  T341]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   19.326750][  T341]  ? 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))
[   19.326752][  T341]  ? 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))
[   19.326756][  T341]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   19.326760][  T341]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   19.326763][  T341]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   19.326767][  T341]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   19.326771][  T341]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   19.326775][  T341]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   19.326776][  T341]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   19.326781][  T341]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   19.326784][  T341]  ____sys_sendmsg (net/socket.c:2713)
[   19.326786][  T341]  ? copy_msghdr_from_user (net/socket.c:2650)
[   19.326788][  T341]  ? sock_write_iter (net/socket.c:1269)
[   19.326790][  T341]  ? move_addr_to_kernel (net/socket.c:258)
[   19.326797][  T341]  ___sys_sendmsg (net/socket.c:2767)
[   19.326800][  T341]  ? copy_msghdr_from_user (net/socket.c:2619)
[   19.326815][  T341]  __sys_sendmsg (net/socket.c:2799)
[   19.326818][  T341]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   19.326824][  T341]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   19.326827][  T341]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   19.326830][  T341]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   19.326833][  T341]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   19.326835][  T341] RIP: 0033:0x7f4330b1654e
[   19.326837][  T341] 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
[   19.326839][  T341] RSP: 002b:00007ffcee208c10 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   19.326841][  T341] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f4330b1654e
[   19.326842][  T341] RDX: 0000000000000000 RSI: 00007ffcee208cc0 RDI: 0000000000000005
[   19.326843][  T341] RBP: 00007ffcee208c20 R08: 0000000000000000 R09: 0000000000000000
[   19.326844][  T341] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f396
[   19.326845][  T341] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffcee209380
| [   22.097749][  T399] softirqs last disabled at (31442): __alloc_skb (./include/linux/bottom_half.h:20 (discriminator 2) net/core/skbuff.c:697 (discriminator 2))
| [   22.097752][  T399] Preemption disabled at:
| [   22.097753][  T399] vprintk_emit (kernel/printk/printk.c:2471)
| [   22.097760][  T399] Tainted: [W]=WARN
[   22.097761][  T399] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   22.097763][  T399] Call Trace:
[   22.097765][  T399]  <TASK>
[   22.097766][  T399]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   22.097772][  T399]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   22.097773][  T399]  __might_resched.cold (kernel/sched/core.c:9234)
[   22.097778][  T399]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   22.097782][  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)
[   22.097786][  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))
[   22.097788][  T399]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.097795][  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)
[   22.097797][  T399]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   22.097801][  T399]  put_chars (drivers/char/virtio_console.c:1176)
[   22.097803][  T399]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   22.097809][  T399]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   22.097817][  T399]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   22.097820][  T399]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.097824][  T399]  console_emit_next_record (kernel/printk/printk.c:3183)
[   22.097828][  T399]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   22.097830][  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))
[   22.097833][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.097836][  T399]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   22.097839][  T399]  console_flush_one_record (kernel/printk/printk.c:3268)
[   22.097844][  T399]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   22.097845][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.097851][  T399]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   22.097853][  T399]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   22.097855][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.097857][  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)
[   22.097860][  T399]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   22.097862][  T399]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   22.097865][  T399]  vprintk_emit (kernel/printk/printk.c:2479)
[   22.097868][  T399]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   22.097869][  T399]  ? netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.097872][  T399]  ? netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.097874][  T399]  ? __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.097876][  T399]  ? ____sys_sendmsg (net/socket.c:2713)
[   22.097878][  T399]  ? ___sys_sendmsg (net/socket.c:2767)
[   22.097880][  T399]  ? __sys_sendmsg (net/socket.c:2799)
[   22.097881][  T399]  ? do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.097887][  T399]  _printk (kernel/printk/printk.c:2504)
[   22.097890][  T399]  ? snapshot_read.cold (user.c:?)
[   22.097895][  T399]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   22.097898][  T399]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   22.097902][  T399]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   22.097905][  T399]  ? netdev_notice (net/core/dev.c:13194)
[   22.097909][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.097911][  T399]  ? __up_read (kernel/locking/rwsem.c:1397 (discriminator 1))
[   22.097913][  T399]  ? down_write_nested (kernel/locking/rwsem.c:1759)
[   22.097915][  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)
[   22.097917][  T399]  netif_set_allmulti.cold (net/core/dev.c:9731 (discriminator 3))
[   22.097921][  T399]  dev_set_allmulti (net/core/dev_api.c:315)
[   22.097925][  T399]  del_nbp (net/bridge/br_if.c:253 net/bridge/br_if.c:341)
[   22.097928][  T399]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   22.097934][  T399]  br_dev_delete (net/bridge/br_if.c:387)
[   22.097937][  T399]  rtnl_dellink (net/core/rtnetlink.c:3651 net/core/rtnetlink.c:3694)
[   22.097939][  T399]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.097941][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.097942][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.097944][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.097965][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.097967][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.097970][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.097972][  T399]  ? mark_usage (kernel/locking/lockdep.c:4690)
[   22.097974][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.097979][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.097981][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.097982][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.097984][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.097988][  T399]  ? rtnl_link_get_net_capable.constprop.0 (net/core/rtnetlink.c:2728)
[   22.097990][  T399]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   22.097993][  T399]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.097994][  T399]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   22.097999][  T399]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   22.098001][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.098004][  T399]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   22.098006][  T399]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   22.098009][  T399]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   22.098015][  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))
[   22.098017][  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))
[   22.098022][  T399]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   22.098026][  T399]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   22.098028][  T399]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   22.098032][  T399]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   22.098036][  T399]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   22.098040][  T399]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   22.098042][  T399]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   22.098047][  T399]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   22.098050][  T399]  ____sys_sendmsg (net/socket.c:2713)
[   22.098052][  T399]  ? copy_msghdr_from_user (net/socket.c:2650)
[   22.098054][  T399]  ? sock_write_iter (net/socket.c:1269)
[   22.098056][  T399]  ? move_addr_to_kernel (net/socket.c:258)
[   22.098063][  T399]  ___sys_sendmsg (net/socket.c:2767)
[   22.098066][  T399]  ? copy_msghdr_from_user (net/socket.c:2619)
[   22.098081][  T399]  __sys_sendmsg (net/socket.c:2799)
[   22.098084][  T399]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   22.098090][  T399]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   22.098093][  T399]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   22.098095][  T399]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   22.098098][  T399]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   22.098100][  T399] RIP: 0033:0x7f5a42c1e54e
[   22.098104][  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
[   22.098105][  T399] RSP: 002b:00007ffd00dfa000 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   22.098108][  T399] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f5a42c1e54e
[   22.098109][  T399] RDX: 0000000000000000 RSI: 00007ffd00dfa0b0 RDI: 0000000000000005
[   22.098110][  T399] RBP: 00007ffd00dfa010 R08: 0000000000000000 R09: 0000000000000000
[   22.098111][  T399] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f399
[   22.098112][  T399] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffd00dfa770
| [   24.587154][  T489] softirqs last disabled at (18900): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   24.587157][  T489] Preemption disabled at:
| [   24.587157][  T489] vprintk_emit (kernel/printk/printk.c:2471)
| [   24.587166][  T489] Tainted: [W]=WARN
[   24.587167][  T489] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   24.587169][  T489] Call Trace:
[   24.587170][  T489]  <TASK>
[   24.587171][  T489]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   24.587177][  T489]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   24.587179][  T489]  __might_resched.cold (kernel/sched/core.c:9234)
[   24.587184][  T489]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   24.587188][  T489]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   24.587192][  T489]  __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))
[   24.587194][  T489]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.587201][  T489]  ? 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)
[   24.587203][  T489]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   24.587207][  T489]  put_chars (drivers/char/virtio_console.c:1176)
[   24.587209][  T489]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   24.587216][  T489]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   24.587223][  T489]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   24.587226][  T489]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.587231][  T489]  console_emit_next_record (kernel/printk/printk.c:3183)
[   24.587234][  T489]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   24.587236][  T489]  ? 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))
[   24.587239][  T489]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.587242][  T489]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.587246][  T489]  console_flush_one_record (kernel/printk/printk.c:3268)
[   24.587250][  T489]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   24.587252][  T489]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.587257][  T489]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   24.587260][  T489]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   24.587262][  T489]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.587263][  T489]  ? 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)
[   24.587267][  T489]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   24.587269][  T489]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   24.587271][  T489]  vprintk_emit (kernel/printk/printk.c:2479)
[   24.587275][  T489]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   24.587277][  T489]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   24.587282][  T489]  _printk (kernel/printk/printk.c:2504)
[   24.587290][  T489]  ? snapshot_read.cold (user.c:?)
[   24.587292][  T489]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   24.587294][  T489]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.587297][  T489]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.587299][  T489]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   24.587303][  T489]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   24.587305][  T489]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   24.587308][  T489]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   24.587311][  T489]  ? netdev_notice (net/core/dev.c:13194)
[   24.587313][  T489]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.587316][  T489]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.587319][  T489]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   24.587322][  T489]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   24.587324][  T489]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   24.587326][  T489]  ? register_netdev (net/core/dev.c:11618)
[   24.587327][  T489]  ? 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))
[   24.587332][  T489]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   24.587335][  T489]  ? __kernel_text_address (kernel/extable.c:79)
[   24.587337][  T489]  ? write_profile (profile.c:?)
[   24.587341][  T489]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   24.587347][  T489]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   24.587350][  T489]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   24.587352][  T489]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   24.587354][  T489]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   24.587355][  T489]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   24.587359][  T489]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   24.587361][  T489]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   24.587362][  T489]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   24.587365][  T489]  ? kasan_save_stack (mm/kasan/common.c:58)
[   24.587367][  T489]  ? kasan_save_stack (mm/kasan/common.c:57)
[   24.587368][  T489]  ? kasan_save_track (mm/kasan/common.c:78)
[   24.587369][  T489]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   24.587371][  T489]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.587373][  T489]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   24.587376][  T489]  ? ___sys_sendmsg (net/socket.c:2758)
[   24.587379][  T489]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.587381][  T489]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   24.587384][  T489]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.587385][  T489]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   24.587387][  T489]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.587388][  T489]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.587389][  T489]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   24.587392][  T489]  ? __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)
[   24.587393][  T489]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   24.587395][  T489]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   24.587398][  T489]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   24.587399][  T489]  ? nla_get_range_signed (lib/nlattr.c:270)
[   24.587404][  T489]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.587406][  T489]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   24.587411][  T489]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   24.587416][  T489]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.587418][  T489]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.587422][  T489]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.587424][  T489]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.587426][  T489]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.587428][  T489]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.587431][  T489]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   24.587433][  T489]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   24.587436][  T489]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.587438][  T489]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   24.587442][  T489]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   24.587444][  T489]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.587447][  T489]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   24.587450][  T489]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   24.587453][  T489]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   24.587459][  T489]  ? 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))
[   24.587462][  T489]  ? 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))
[   24.587466][  T489]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   24.587470][  T489]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   24.587472][  T489]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   24.587476][  T489]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   24.587480][  T489]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   24.587484][  T489]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   24.587485][  T489]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   24.587491][  T489]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   24.587493][  T489]  ____sys_sendmsg (net/socket.c:2713)
[   24.587496][  T489]  ? copy_msghdr_from_user (net/socket.c:2650)
[   24.587498][  T489]  ? sock_write_iter (net/socket.c:1269)
[   24.587499][  T489]  ? move_addr_to_kernel (net/socket.c:258)
[   24.587506][  T489]  ___sys_sendmsg (net/socket.c:2767)
[   24.587509][  T489]  ? copy_msghdr_from_user (net/socket.c:2619)
[   24.587524][  T489]  __sys_sendmsg (net/socket.c:2799)
[   24.587527][  T489]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   24.587533][  T489]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   24.587536][  T489]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   24.587539][  T489]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   24.587542][  T489]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   24.587544][  T489] RIP: 0033:0x7fc26327f54e
[   24.587548][  T489] 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
[   24.587549][  T489] RSP: 002b:00007ffeee428690 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   24.587552][  T489] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fc26327f54e
[   24.587554][  T489] RDX: 0000000000000000 RSI: 00007ffeee428740 RDI: 0000000000000005
[   24.587555][  T489] RBP: 00007ffeee4286a0 R08: 0000000000000000 R09: 0000000000000000
[   24.587555][  T489] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f39b
[   24.587556][  T489] R13: 00000000004a1620 R14: 0000000000000000 R15: 00007ffeee428e10
| [   32.726429][  T679] softirqs last disabled at (19256): netif_change_name (./include/linux/spinlock.h:353 ./include/linux/seqlock.h:908 net/core/dev.c:1499)
| [   32.726432][  T679] Preemption disabled at:
| [   32.726432][  T679] vprintk_emit (kernel/printk/printk.c:2471)
| [   32.726441][  T679] Tainted: [W]=WARN
[   32.726442][  T679] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[   32.726444][  T679] Call Trace:
[   32.726445][  T679]  <TASK>
[   32.726447][  T679]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[   32.726452][  T679]  ? vprintk_emit (kernel/printk/printk.c:2471)
[   32.726454][  T679]  __might_resched.cold (kernel/sched/core.c:9234)
[   32.726459][  T679]  ? perf_trace_sched_switch (./include/linux/list.h:1037 (discriminator 3))
[   32.726463][  T679]  ? __kmalloc_noprof (./include/linux/sched/mm.h:317 mm/slub.c:4636 mm/slub.c:4974 mm/slub.c:5413 mm/slub.c:5439)
[   32.726467][  T679]  __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))
[   32.726469][  T679]  ? alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.726475][  T679]  ? 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)
[   32.726478][  T679]  alloc_buf.isra.0 (./include/linux/slab.h:995 drivers/char/virtio_console.c:429)
[   32.726482][  T679]  put_chars (drivers/char/virtio_console.c:1176)
[   32.726484][  T679]  ? __send_to_port (drivers/char/virtio_console.c:654)
[   32.726490][  T679]  hvc_console_print (drivers/tty/hvc/hvc_console.c:177 (discriminator 2))
[   32.726498][  T679]  ? hvc_write (drivers/tty/hvc/hvc_console.c:501)
[   32.726501][  T679]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.726505][  T679]  console_emit_next_record (kernel/printk/printk.c:3183)
[   32.726509][  T679]  ? devkmsg_read (./arch/x86/include/asm/atomic64_64.h:20)
[   32.726511][  T679]  ? 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))
[   32.726514][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.726517][  T679]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.726521][  T679]  console_flush_one_record (kernel/printk/printk.c:3268)
[   32.726525][  T679]  ? console_emit_next_record (kernel/printk/printk.c:3150)
[   32.726527][  T679]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.726532][  T679]  console_unlock (kernel/printk/printk.c:3350 kernel/printk/printk.c:3380 kernel/printk/printk.c:3420)
[   32.726535][  T679]  ? console_flush_one_record (kernel/printk/printk.c:3316)
[   32.726537][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.726538][  T679]  ? 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)
[   32.726542][  T679]  ? __down_trylock_console_sem (kernel/printk/printk.c:334)
[   32.726544][  T679]  ? vprintk_emit (kernel/printk/printk.c:2478)
[   32.726546][  T679]  vprintk_emit (kernel/printk/printk.c:2479)
[   32.726550][  T679]  ? wake_up_klogd_work_func (kernel/printk/printk.c:4603 (discriminator 126))
[   32.726552][  T679]  ? _mutex_trylock_nest_lock (kernel/locking/mutex.c:1227 (discriminator 6))
[   32.726557][  T679]  _printk (kernel/printk/printk.c:2504)
[   32.726561][  T679]  ? snapshot_read.cold (user.c:?)
[   32.726562][  T679]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.726565][  T679]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.726568][  T679]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.726570][  T679]  ? netdev_name (./include/linux/netdevice.h:5709 (discriminator 1))
[   32.726574][  T679]  ? __netdev_printk (net/core/dev.c:13148 (discriminator 2))
[   32.726576][  T679]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   32.726579][  T679]  netdev_info (net/core/dev.c:13195 (discriminator 3))
[   32.726582][  T679]  ? netdev_notice (net/core/dev.c:13194)
[   32.726584][  T679]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.726587][  T679]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.726590][  T679]  ? mark_held_locks (kernel/locking/lockdep.c:4341)
[   32.726593][  T679]  ? do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   32.726595][  T679]  netif_change_name.cold (net/core/dev.c:1507 (discriminator 3))
[   32.726597][  T679]  ? register_netdev (net/core/dev.c:11618)
[   32.726599][  T679]  ? 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))
[   32.726604][  T679]  ? netdev_adjacent_rename_links (net/core/dev.c:9598)
[   32.726606][  T679]  ? __kernel_text_address (kernel/extable.c:79)
[   32.726609][  T679]  ? write_profile (profile.c:?)
[   32.726613][  T679]  ? __asan_memset (mm/kasan/shadow.c:84 (discriminator 1))
[   32.726618][  T679]  do_setlink.isra.0 (net/core/rtnetlink.c:3246)
[   32.726622][  T679]  ? stack_trace_save (kernel/stacktrace.c:122 (discriminator 1))
[   32.726624][  T679]  ? rtnl_link_get_size (net/core/rtnetlink.c:747)
[   32.726625][  T679]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:388 kernel/rcu/update.c:380)
[   32.726627][  T679]  ? stack_depot_save_flags (lib/stackdepot.c:609 (discriminator 2) lib/stackdepot.c:676 (discriminator 2))
[   32.726630][  T679]  ? rcu_lockdep_current_cpu_online (kernel/rcu/tree.c:4116 (discriminator 3) kernel/rcu/tree.c:4108 (discriminator 3))
[   32.726632][  T679]  ? rcu_read_lock_any_held (./include/linux/lockdep.h:249 kernel/rcu/update.c:386 kernel/rcu/update.c:380)
[   32.726634][  T679]  ? validate_chain (kernel/locking/lockdep.c:3817 (discriminator 2) kernel/locking/lockdep.c:3837 (discriminator 2) kernel/locking/lockdep.c:3892 (discriminator 2))
[   32.726636][  T679]  ? kasan_save_stack (mm/kasan/common.c:58)
[   32.726638][  T679]  ? kasan_save_stack (mm/kasan/common.c:57)
[   32.726639][  T679]  ? kasan_save_track (mm/kasan/common.c:78)
[   32.726640][  T679]  ? __kasan_kmalloc (mm/kasan/common.c:398 mm/kasan/common.c:415)
[   32.726643][  T679]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.726644][  T679]  ? snd_ac97_proc_read_main (sound/pci/ac97/ac97_proc.c:320)
[   32.726647][  T679]  ? ___sys_sendmsg (net/socket.c:2758)
[   32.726651][  T679]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.726653][  T679]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   32.726655][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.726657][  T679]  ? lock_acquire (./include/trace/events/lock.h:23 (discriminator 22) kernel/locking/lockdep.c:5871 (discriminator 22))
[   32.726659][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.726660][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.726661][  T679]  ? trace_contention_end (./include/trace/events/lock.h:121 (discriminator 22))
[   32.726664][  T679]  ? __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)
[   32.726665][  T679]  ? __mutex_lock (kernel/locking/mutex.c:656 (discriminator 1) kernel/locking/mutex.c:821 (discriminator 1))
[   32.726667][  T679]  ? rtnl_newlink (net/core/rtnetlink.c:80 net/core/rtnetlink.c:366 net/core/rtnetlink.c:4214)
[   32.726670][  T679]  ? ww_mutex_lock (kernel/locking/mutex.c:934)
[   32.726671][  T679]  ? nla_get_range_signed (lib/nlattr.c:270)
[   32.726676][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.726678][  T679]  ? __rtnl_newlink (net/core/rtnetlink.c:4063)
[   32.726683][  T679]  rtnl_newlink (net/core/rtnetlink.c:4215)
[   32.726689][  T679]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.726691][  T679]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.726695][  T679]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.726700][  T679]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.726702][  T679]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.726704][  T679]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.726707][  T679]  ? rtnl_bridge_getlink (net/core/rtnetlink.c:5558)
[   32.726709][  T679]  rtnetlink_rcv_msg (net/core/rtnetlink.c:7132)
[   32.726712][  T679]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   32.726714][  T679]  ? __lock_acquire (kernel/locking/lockdep.c:5254)
[   32.726718][  T679]  ? lock_acquire.part.0 (kernel/locking/lockdep.c:5908 (discriminator 2))
[   32.726720][  T679]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.726723][  T679]  netlink_rcv_skb (net/netlink/af_netlink.c:2556)
[   32.726726][  T679]  ? rtnl_link_fill (./include/net/netlink.h:1107 (discriminator 1))
[   32.726729][  T679]  ? netlink_ack (./include/linux/skbuff.h:2718)
[   32.726735][  T679]  ? 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))
[   32.726737][  T679]  ? 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))
[   32.726742][  T679]  netlink_unicast (net/netlink/af_netlink.c:1319 net/netlink/af_netlink.c:1345)
[   32.726746][  T679]  ? netlink_attachskb (./arch/x86/include/asm/bitops.h:202 (discriminator 1))
[   32.726748][  T679]  ? find_held_lock (kernel/locking/lockdep.c:5367)
[   32.726752][  T679]  netlink_sendmsg (net/netlink/af_netlink.c:1900)
[   32.726756][  T679]  ? netlink_unicast (./include/net/net_namespace.h:422 (discriminator 7))
[   32.726760][  T679]  ? __lock_release.isra.0 (kernel/locking/lockdep.c:5554)
[   32.726761][  T679]  ? __import_iovec (lib/iov_iter.c:1358 lib/iov_iter.c:1373)
[   32.726767][  T679]  __sock_sendmsg (net/socket.c:800 (discriminator 4) net/socket.c:815 (discriminator 4))
[   32.726769][  T679]  ____sys_sendmsg (net/socket.c:2713)
[   32.726772][  T679]  ? copy_msghdr_from_user (net/socket.c:2650)
[   32.726774][  T679]  ? sock_write_iter (net/socket.c:1269)
[   32.726775][  T679]  ? move_addr_to_kernel (net/socket.c:258)
[   32.726783][  T679]  ___sys_sendmsg (net/socket.c:2767)
[   32.726785][  T679]  ? copy_msghdr_from_user (net/socket.c:2619)
[   32.726801][  T679]  __sys_sendmsg (net/socket.c:2799)
[   32.726803][  T679]  ? __sys_sendmsg_sock (net/socket.c:2780)
[   32.726810][  T679]  ? rcu_is_watching (./include/linux/context_tracking.h:128 (discriminator 3) kernel/rcu/tree.c:753 (discriminator 3))
[   32.726813][  T679]  do_syscall_64 (arch/x86/entry/syscall_64.c:61 arch/x86/entry/syscall_64.c:84)
[   32.726815][  T679]  ? exc_page_fault (arch/x86/mm/fault.c:1489 (discriminator 3) arch/x86/mm/fault.c:1536 (discriminator 3))
[   32.726818][  T679]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[   32.726820][  T679] RIP: 0033:0x7fa32283f54e
[   32.726824][  T679] 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
[   32.726826][  T679] RSP: 002b:00007ffca02de570 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
[   32.726828][  T679] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fa32283f54e
[   32.726830][  T679] RDX: 0000000000000000 RSI: 00007ffca02de620 RDI: 0000000000000005
[   32.726831][  T679] RBP: 00007ffca02de580 R08: 0000000000000000 R09: 0000000000000000
[   32.726831][  T679] R10: 0000000000000000 R11: 0000000000000202 R12: 000000006a90f3a4


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