Warning: Permanently added '10.128.0.100' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program [ 499.817172][ C1] hrtimer: interrupt took 43850 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 [ 605.780851][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 605.787836][ C0] (detected by 0, t=10502 jiffies, g=5689, q=83) [ 605.794248][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294997768-4294987266), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 605.807610][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g5689 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 605.818800][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 605.828769][ C0] rcu: RCU grace-period kthread stack dump: [ 605.834647][ C0] task:rcu_preempt state:R running task stack:28688 pid: 14 ppid: 2 flags:0x00004000 [ 605.845422][ C0] Call Trace: [ 605.848696][ C0] [ 605.851626][ C0] __schedule+0xa9a/0x4940 [ 605.856075][ C0] ? lockdep_hardirqs_on+0x79/0x100 [ 605.861273][ C0] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 605.867091][ C0] ? io_schedule_timeout+0x180/0x180 [ 605.872385][ C0] ? debug_object_destroy+0x210/0x210 [ 605.877767][ C0] schedule+0xd2/0x260 [ 605.881848][ C0] schedule_timeout+0x14a/0x2a0 [ 605.886703][ C0] ? usleep_range+0x170/0x170 [ 605.891384][ C0] ? destroy_timer_on_stack+0x20/0x20 [ 605.896761][ C0] ? dump_vmcb.cold+0x16ec/0x2d46 [ 605.902058][ C0] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 605.907911][ C0] ? prepare_to_swait_event+0xee/0x470 [ 605.913391][ C0] rcu_gp_fqs_loop+0x186/0x810 [ 605.918378][ C0] ? force_qs_rnp+0x760/0x760 [ 605.923068][ C0] ? rcu_gp_init+0x906/0x12a0 [ 605.927771][ C0] rcu_gp_kthread+0x1de/0x320 [ 605.932458][ C0] ? rcu_gp_init+0x12a0/0x12a0 [ 605.937255][ C0] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 605.943527][ C0] ? __kthread_parkme+0x15f/0x220 [ 605.948569][ C0] ? rcu_gp_init+0x12a0/0x12a0 [ 605.953344][ C0] kthread+0x405/0x4f0 [ 605.957424][ C0] ? set_kthread_struct+0x130/0x130 [ 605.962718][ C0] ret_from_fork+0x1f/0x30 [ 605.967167][ C0] [ 605.970193][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 605.976508][ C0] NMI backtrace for cpu 0 [ 605.980835][ C0] CPU: 0 PID: 3867 Comm: syz-executor808 Not tainted 5.16.0-rc4-syzkaller #0 [ 605.989602][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 605.999664][ C0] Call Trace: [ 606.002949][ C0] [ 606.005791][ C0] dump_stack_lvl+0xcd/0x134 [ 606.010398][ C0] nmi_cpu_backtrace.cold+0x47/0x144 [ 606.015691][ C0] ? lapic_can_unplug_cpu+0x80/0x80 [ 606.020894][ C0] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 606.026892][ C0] rcu_check_gp_kthread_starvation.cold+0x1fb/0x200 [ 606.033533][ C0] rcu_sched_clock_irq+0x2125/0x2200 [ 606.038848][ C0] ? rcutree_dead_cpu+0x30/0x30 [ 606.043710][ C0] ? do_raw_spin_unlock+0x171/0x230 [ 606.048922][ C0] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 606.054745][ C0] ? timekeeping_advance+0x978/0xe30 [ 606.060045][ C0] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 606.066300][ C0] ? hrtimer_run_queues+0x93/0x400 [ 606.071422][ C0] update_process_times+0x16d/0x200 [ 606.076630][ C0] tick_sched_handle+0x9b/0x180 [ 606.081492][ C0] tick_sched_timer+0x1b0/0x2d0 [ 606.086355][ C0] ? get_cpu_iowait_time_us+0x3f0/0x3f0 [ 606.091908][ C0] __hrtimer_run_queues+0x1c0/0xe50 [ 606.097124][ C0] ? hrtimer_sleeper_start_expires+0x80/0x80 [ 606.103113][ C0] ? ktime_get_update_offsets_now+0x3eb/0x5c0 [ 606.109204][ C0] hrtimer_interrupt+0x31c/0x790 [ 606.114169][ C0] __sysvec_apic_timer_interrupt+0x146/0x530 [ 606.120172][ C0] sysvec_apic_timer_interrupt+0x8e/0xc0 [ 606.125834][ C0] [ 606.128768][ C0] [ 606.131700][ C0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 606.137696][ C0] RIP: 0010:tty_open+0x164/0x1000 [ 606.142735][ C0] Code: 00 e8 00 1e 85 fd 48 85 c0 48 89 c3 0f 84 bb 0c 00 00 e8 3f b5 3e fd 4d 8d af b0 01 00 00 4c 89 e8 48 c1 e8 03 42 80 3c 30 00 <0f> 85 7f 0c 00 00 49 89 9f b0 01 00 00 8b 5c 24 38 bf 00 00 50 00 [ 606.162356][ C0] RSP: 0018:ffffc90002c9f8c8 EFLAGS: 00000246 [ 606.168442][ C0] RAX: 1ffff1100edff266 RBX: ffff88807a891880 RCX: 0000000000000000 [ 606.176428][ C0] RDX: ffff8880731a3a00 RSI: ffffffff8438f601 RDI: 0000000000000000 [ 606.184418][ C0] RBP: 0000000000000000 R08: 000000002654bddb R09: 0000000031af7b9f [ 606.192406][ C0] R10: 0000000000000001 R11: 0000000000000000 R12: 00000000fffffff5 [ 606.200397][ C0] R13: ffff888076ff9330 R14: dffffc0000000000 R15: ffff888076ff9180 [ 606.208399][ C0] ? tty_open+0x151/0x1000 [ 606.212852][ C0] ? tty_open+0x151/0x1000 [ 606.217301][ C0] ? tty_init_dev+0x80/0x80 [ 606.221913][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 606.226871][ C0] ? tty_init_dev+0x80/0x80 [ 606.231382][ C0] chrdev_open+0x266/0x770 [ 606.235899][ C0] ? cdev_device_add+0x210/0x210 [ 606.240847][ C0] ? fsnotify_perm.part.0+0x22d/0x620 [ 606.246234][ C0] do_dentry_open+0x4c8/0x1250 [ 606.251034][ C0] ? cdev_device_add+0x210/0x210 [ 606.255980][ C0] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 606.262322][ C0] ? may_open+0x1f6/0x420 [ 606.266662][ C0] path_openat+0x1cad/0x2750 [ 606.271267][ C0] ? path_lookupat+0x860/0x860 [ 606.276040][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 606.282039][ C0] do_filp_open+0x1aa/0x400 [ 606.286744][ C0] ? may_open_dev+0xf0/0xf0 [ 606.291366][ C0] ? rwlock_bug.part.0+0x90/0x90 [ 606.296336][ C0] ? __sanitizer_cov_trace_const_cmp8+0x1d/0x70 [ 606.302611][ C0] ? _find_next_bit+0x1e3/0x260 [ 606.307668][ C0] ? _raw_spin_unlock+0x24/0x40 [ 606.312546][ C0] ? alloc_fd+0x2f0/0x670 [ 606.316920][ C0] do_sys_openat2+0x16d/0x4d0 [ 606.321641][ C0] ? build_open_flags+0x6f0/0x6f0 [ 606.326699][ C0] ? __context_tracking_exit+0xb8/0xe0 [ 606.332188][ C0] ? lock_downgrade+0x6e0/0x6e0 [ 606.337177][ C0] __x64_sys_openat+0x13f/0x1f0 [ 606.342053][ C0] ? __ia32_sys_open+0x1c0/0x1c0 [ 606.347096][ C0] ? syscall_enter_from_user_mode+0x21/0x70 [ 606.353022][ C0] do_syscall_64+0x35/0xb0 [ 606.357446][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 606.363608][ C0] RIP: 0033:0x7f6805a00af9 [ 606.368062][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 00 00 90 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 606.387700][ C0] RSP: 002b:00007f68059b2318 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 606.396134][ C0] RAX: ffffffffffffffda RBX: 00007f6805a883e8 RCX: 00007f6805a00af9 [ 606.404117][ C0] RDX: 0000000000000802 RSI: 0000000020000840 RDI: ffffffffffffff9c [ 606.412095][ C0] RBP: 00007f6805a883e0 R08: 0000000000000000 R09: 0000000000000000 [ 606.420329][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 7974742f7665642f [ 606.428392][ C0] R13: 00007ffc58b4f34f R14: 00007f68059b2400 R15: 0000000000022000 [ 606.436387][ C0] [ 606.439450][ C0] sched: RT throttling activated