Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts. syzkaller login: [ 1217.267631][ T8478] IPVS: ftp: loaded support on port[0] = 21 [ 1217.330964][ T473] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1217.358064][ T473] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 executing program [ 1217.376159][ T8516] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1217.385512][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 1217.394303][ T8516] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1217.405029][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 1217.433485][ C1] hrtimer: interrupt took 31600 ns executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 1333.336642][ C0] rcu: INFO: rcu_preempt self-detected stall on CPU [ 1333.343637][ C0] rcu: 0-...!: (10194 ticks this GP) idle=25a/1/0x4000000000000000 softirq=8880/8882 fqs=1 [ 1333.354745][ C0] (t=10502 jiffies g=8805 q=65) [ 1333.359877][ C0] rcu: rcu_preempt kthread starved for 10501 jiffies! g8805 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 1333.371391][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 1333.381345][ C0] rcu: RCU grace-period kthread stack dump: [ 1333.387480][ C0] task:rcu_preempt state:R running task stack:29512 pid: 11 ppid: 2 flags:0x00004000 [ 1333.398364][ C0] Call Trace: [ 1333.401749][ C0] __schedule+0x893/0x2130 [ 1333.406147][ C0] ? io_schedule_timeout+0x140/0x140 [ 1333.411437][ C0] ? debug_object_destroy+0x210/0x210 [ 1333.416880][ C0] ? lock_downgrade+0x6d0/0x6d0 [ 1333.421807][ C0] schedule+0xcf/0x270 [ 1333.425854][ C0] schedule_timeout+0x148/0x250 [ 1333.430681][ C0] ? usleep_range+0x170/0x170 [ 1333.435341][ C0] ? lockdep_hardirqs_on+0x79/0x100 [ 1333.440529][ C0] ? __next_timer_interrupt+0x210/0x210 [ 1333.446080][ C0] ? prepare_to_swait_exclusive+0x2d0/0x2d0 [ 1333.452043][ C0] rcu_gp_kthread+0xb4c/0x1c90 [ 1333.456789][ C0] ? lock_downgrade+0x6d0/0x6d0 [ 1333.461712][ C0] ? rcu_core_si+0x10/0x10 [ 1333.466107][ C0] ? _raw_spin_unlock_irqrestore+0x42/0x50 [ 1333.471894][ C0] ? lockdep_hardirqs_on+0x79/0x100 [ 1333.477177][ C0] ? __kthread_parkme+0x13f/0x1e0 [ 1333.482274][ C0] ? rcu_core_si+0x10/0x10 [ 1333.486681][ C0] kthread+0x3b1/0x4a0 [ 1333.490734][ C0] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 1333.496616][ C0] ret_from_fork+0x1f/0x30 [ 1333.501027][ C0] NMI backtrace for cpu 0 [ 1333.505530][ C0] CPU: 0 PID: 8880 Comm: syz-executor561 Not tainted 5.10.0-rc6-syzkaller #0 [ 1333.514273][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1333.524334][ C0] Call Trace: [ 1333.527603][ C0] [ 1333.530457][ C0] dump_stack+0x107/0x163 [ 1333.534792][ C0] nmi_cpu_backtrace.cold+0x44/0xd7 [ 1333.539983][ C0] ? lapic_can_unplug_cpu+0x80/0x80 [ 1333.545210][ C0] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 1333.551207][ C0] rcu_dump_cpu_stacks+0x1e3/0x21e [ 1333.556569][ C0] rcu_sched_clock_irq.cold+0x472/0xee8 [ 1333.562110][ C0] ? find_held_lock+0x2d/0x110 [ 1333.566857][ C0] ? rcutree_dead_cpu+0x40/0x40 [ 1333.571693][ C0] ? __raise_softirq_irqoff+0x93/0x1d0 [ 1333.577223][ C0] update_process_times+0x77/0xd0 [ 1333.582233][ C0] tick_sched_handle+0x9b/0x180 [ 1333.587063][ C0] tick_sched_timer+0x1d1/0x2a0 [ 1333.592121][ C0] ? can_stop_idle_tick+0x290/0x290 [ 1333.597323][ C0] __hrtimer_run_queues+0x1ce/0xea0 [ 1333.602509][ C0] ? hrtimer_sleeper_start_expires+0x80/0x80 [ 1333.609014][ C0] ? ktime_get_update_offsets_now+0x249/0x320 [ 1333.615215][ C0] hrtimer_interrupt+0x334/0x940 [ 1333.620142][ C0] __sysvec_apic_timer_interrupt+0x146/0x540 [ 1333.626278][ C0] sysvec_apic_timer_interrupt+0x48/0x100 [ 1333.631983][ C0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 1333.637956][ C0] RIP: 0010:ieee80211_rx_list+0x9fc/0x23d0 [ 1333.643769][ C0] Code: d2 0f 85 8d 17 00 00 48 8b 44 24 10 bf 50 00 00 00 0f b7 00 41 89 c4 66 89 44 24 08 66 41 81 e4 fc 00 44 89 e6 e8 e4 36 21 f9 <66> 41 83 fc 50 0f 84 be 11 00 00 e8 a4 3e 21 f9 44 89 e6 bf 80 00 [ 1333.663367][ C0] RSP: 0018:ffffc90000007cb8 EFLAGS: 00000246 [ 1333.669417][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff884ec5cc [ 1333.677370][ C0] RDX: 0000000000000080 RSI: ffff88801b054ec0 RDI: 0000000000000003 [ 1333.685500][ C0] RBP: ffff88801a9ae140 R08: 0000000000000001 R09: ffffc90000007d48 [ 1333.693478][ C0] R10: 0000000000000050 R11: 0000000000000001 R12: 0000000000000080 [ 1333.701431][ C0] R13: ffff88801a9ae140 R14: ffff88801a650c80 R15: ffffc90000007d48 [ 1333.709505][ C0] ? ieee80211_rx_list+0x9fc/0x23d0 [ 1333.714776][ C0] ? ieee80211_rx_list+0x9fc/0x23d0 [ 1333.719961][ C0] ? ieee80211_prepare_and_rx_handle+0x6360/0x6360 [ 1333.726571][ C0] ? mark_held_locks+0x9f/0xe0 [ 1333.731493][ C0] ? irqtime_account_irq+0x17e/0x2d0 [ 1333.736772][ C0] ieee80211_rx_napi+0xf7/0x3d0 [ 1333.741607][ C0] ? ieee80211_rx_list+0x23d0/0x23d0 [ 1333.746997][ C0] ieee80211_tasklet_handler+0xd3/0x130 [ 1333.752544][ C0] tasklet_action_common.constprop.0+0x22f/0x2d0 [ 1333.758857][ C0] __do_softirq+0x2a0/0x9f6 [ 1333.763361][ C0] asm_call_irq_on_stack+0xf/0x20 [ 1333.768354][ C0] [ 1333.771268][ C0] do_softirq_own_stack+0xaa/0xd0 [ 1333.776263][ C0] irq_exit_rcu+0x132/0x200 [ 1333.780850][ C0] sysvec_apic_timer_interrupt+0x4d/0x100 [ 1333.786542][ C0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 1333.792499][ C0] RIP: 0010:__list_del_entry_valid+0xa/0xf0 [ 1333.798560][ C0] Code: fd 48 8b 34 24 eb a1 48 89 f7 48 89 34 24 e8 dd 3c f7 fd 48 8b 34 24 eb b4 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df <41> 55 41 54 55 48 89 fd 48 83 c7 08 48 89 fa 48 c1 ea 03 80 3c 02 [ 1333.818428][ C0] RSP: 0018:ffffc9000206fab0 EFLAGS: 00000293 [ 1333.824475][ C0] RAX: dffffc0000000000 RBX: ffffc9000217fb70 RCX: ffffffff8163ffc3 [ 1333.832427][ C0] RDX: ffff88801b054ec0 RSI: ffffffff83d03751 RDI: ffffc9000217fb88 [ 1333.840377][ C0] RBP: ffffc9000217fb78 R08: 0000000000000001 R09: ffff88801be61a63 [ 1333.848327][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: ffffc9000217fb88 [ 1333.856273][ C0] R13: ffffc90000dfe148 R14: ffffc9000217fb90 R15: 00000000006e3000 [ 1333.864239][ C0] ? __unqueue_futex+0x103/0x1b0 [ 1333.869155][ C0] ? plist_del+0x1a1/0x480 [ 1333.873550][ C0] plist_del+0x1ad/0x480 [ 1333.877777][ C0] __unqueue_futex+0xc9/0x1b0 [ 1333.882434][ C0] mark_wake_futex+0x10f/0x1a0 [ 1333.887176][ C0] futex_wake+0x3b4/0x490 [ 1333.891483][ C0] ? futex_wait_restart+0x200/0x200 [ 1333.896662][ C0] ? __lock_acquire+0x16b7/0x5500 [ 1333.901680][ C0] do_futex+0x322/0x1a60 [ 1333.905904][ C0] ? futex_exit_release+0x220/0x220 [ 1333.911086][ C0] ? kill_fasync+0x2ce/0x460 [ 1333.915652][ C0] ? lock_downgrade+0x6d0/0x6d0 [ 1333.920487][ C0] __do_sys_futex+0x2a2/0x470 [ 1333.925141][ C0] ? kvm_sched_clock_read+0x14/0x40 [ 1333.930315][ C0] ? do_futex+0x1a60/0x1a60 [ 1333.934800][ C0] ? syscall_enter_from_user_mode+0x1d/0x50 [ 1333.940673][ C0] do_syscall_64+0x2d/0x70 [ 1333.945066][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1333.950934][ C0] RIP: 0033:0x448969 [ 1333.954806][ C0] Code: e8 4c 09 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb 05 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 1333.974400][ C0] RSP: 002b:00007f9c01bc6cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 1333.982799][ C0] RAX: ffffffffffffffda RBX: 00000000006e39e8 RCX: 0000000000448969 [ 1333.990752][ C0] RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00000000006e39ec [ 1333.998700][ C0] RBP: 00000000006e39e0 R08: 0000000000000000 R09: 0000000000000000 [ 1334.006653][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006e39ec [ 1334.014966][ C0] R13: 00007ffd71e0be4f R14: 00007f9c01bc79c0 R15: 00000000006e39ec