Warning: Permanently added '10.128.1.86' (ED25519) to the list of known hosts. executing program executing program [ 294.649251][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 294.656301][ C0] (detected by 0, t=10502 jiffies, g=3489, q=17) [ 294.662719][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294966616-4294956114), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 294.676090][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g3489 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 294.687195][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 294.697161][ C0] rcu: RCU grace-period kthread stack dump: [ 294.703043][ C0] task:rcu_preempt state:R running task stack:27288 pid: 15 ppid: 2 flags:0x00004000 [ 294.713818][ C0] Call Trace: [ 294.717093][ C0] [ 294.720022][ C0] __schedule+0x12c4/0x45b0 [ 294.724642][ C0] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 294.730562][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 294.736460][ C0] ? __mod_timer+0xa8e/0xeb0 [ 294.741121][ C0] ? __sched_text_start+0x8/0x8 [ 294.745984][ C0] ? mod_timer_pending+0x20/0x20 [ 294.750917][ C0] ? lockdep_softirqs_off+0x420/0x420 [ 294.756332][ C0] schedule+0x11b/0x1f0 [ 294.760489][ C0] schedule_timeout+0x1b9/0x300 [ 294.765339][ C0] ? console_conditional_schedule+0x40/0x40 [ 294.771231][ C0] ? update_process_times+0x200/0x200 [ 294.776622][ C0] ? prepare_to_swait_event+0x321/0x340 [ 294.782224][ C0] rcu_gp_fqs_loop+0x2bf/0x1080 [ 294.787112][ C0] ? _raw_spin_unlock_irq+0x1f/0x40 [ 294.792330][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 294.797612][ C0] ? rcu_gp_init+0xdae/0x1140 [ 294.802294][ C0] ? rcu_gp_init+0x1140/0x1140 [ 294.807066][ C0] ? finish_swait+0xc5/0x1d0 [ 294.811671][ C0] rcu_gp_kthread+0xa4/0x360 [ 294.816263][ C0] ? _raw_spin_unlock+0x40/0x40 [ 294.821115][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 294.826222][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 294.832119][ C0] ? __kthread_parkme+0x15c/0x1c0 [ 294.837197][ C0] kthread+0x3f6/0x4f0 [ 294.841266][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 294.846372][ C0] ? kthread_blkcg+0xd0/0xd0 [ 294.850963][ C0] ret_from_fork+0x1f/0x30 [ 294.855425][ C0] [ 294.858451][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 294.864768][ C0] NMI backtrace for cpu 0 [ 294.869088][ C0] CPU: 0 PID: 3549 Comm: syz-executor134 Not tainted 5.15.142-syzkaller #0 [ 294.877672][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 294.887726][ C0] Call Trace: [ 294.891003][ C0] [ 294.893844][ C0] dump_stack_lvl+0x1e3/0x2cb [ 294.898528][ C0] ? io_uring_drop_tctx_refs+0x19d/0x19d [ 294.904161][ C0] ? panic+0x84d/0x84d [ 294.908240][ C0] nmi_cpu_backtrace+0x46a/0x4a0 [ 294.913225][ C0] ? __wake_up_klogd+0xd5/0x100 [ 294.918084][ C0] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 294.924235][ C0] ? _printk+0xd1/0x111 [ 294.928535][ C0] ? cpu_online+0x1f/0x40 [ 294.932878][ C0] ? panic+0x84d/0x84d [ 294.936962][ C0] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 294.943085][ C0] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 294.949072][ C0] rcu_check_gp_kthread_starvation+0x1d2/0x240 [ 294.955229][ C0] print_other_cpu_stall+0x137a/0x14d0 [ 294.960701][ C0] ? print_cpu_stall+0x600/0x600 [ 294.965644][ C0] ? do_raw_spin_unlock+0x137/0x8b0 [ 294.970856][ C0] rcu_sched_clock_irq+0xa38/0x1150 [ 294.976052][ C0] ? rcutree_dead_cpu+0x20/0x20 [ 294.980900][ C0] ? hrtimer_run_queues+0x163/0x450 [ 294.986099][ C0] ? account_process_tick+0x232/0x3a0 [ 294.991521][ C0] update_process_times+0x196/0x200 [ 294.996718][ C0] tick_sched_timer+0x386/0x550 [ 295.001644][ C0] ? tick_setup_sched_timer+0x2d0/0x2d0 [ 295.007186][ C0] __hrtimer_run_queues+0x55b/0xcf0 [ 295.012392][ C0] ? hrtimer_interrupt+0x980/0x980 [ 295.017501][ C0] ? ktime_get_update_offsets_now+0x407/0x420 [ 295.023571][ C0] hrtimer_interrupt+0x392/0x980 [ 295.028629][ C0] __sysvec_apic_timer_interrupt+0x139/0x470 [ 295.034646][ C0] sysvec_apic_timer_interrupt+0x8c/0xb0 [ 295.040290][ C0] [ 295.043222][ C0] [ 295.046148][ C0] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 295.052135][ C0] RIP: 0010:syscall_enter_from_user_mode+0x37/0x230 [ 295.058733][ C0] Code: 49 89 fe 48 8b 7c 24 30 e8 46 f6 ff ff e9 88 01 00 00 e9 8c 01 00 00 e8 07 b8 6a f7 e8 f2 b5 6a f7 fb 65 4c 8b 3d e9 7c e6 75 <49> 8b 6f 08 40 f6 c5 3f 0f 84 d6 00 00 00 40 f6 c5 20 74 17 4c 89 [ 295.078336][ C0] RSP: 0018:ffffc90002f37ef8 EFLAGS: 00000282 [ 295.084405][ C0] RAX: bc175e6d25de0b00 RBX: 0000000000000027 RCX: ffffffff913c6f03 [ 295.092369][ C0] RDX: dffffc0000000000 RSI: ffffffff8a8b0d60 RDI: ffffffff8ad87dc0 [ 295.100336][ C0] RBP: ffffc90002f37f48 R08: ffffffff8186a8f0 R09: fffffbfff1bc72d6 [ 295.108306][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 295.116269][ C0] R13: 0000000000000000 R14: ffffc90002f37f58 R15: ffff8880208fd940 [ 295.124244][ C0] ? trace_hardirqs_on+0x30/0x80 [ 295.129284][ C0] ? syscall_enter_from_user_mode+0x2e/0x230 [ 295.135286][ C0] do_syscall_64+0x1e/0xb0 [ 295.139726][ C0] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 295.145638][ C0] RIP: 0033:0x7fd4c3016387 [ 295.150063][ C0] Code: 0b e9 68 fe ff ff 48 83 c4 18 48 8d 3d 52 0f 09 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 63 d8 fd ff 0f 1f 00 b8 27 00 00 00 0f 05 0f 1f 84 00 00 00 00 00 31 f6 31 ff e9 c7 e5 02 00 0f 1f 80 00 [ 295.169665][ C0] RSP: 002b:00007ffd33b213c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000027 [ 295.178086][ C0] RAX: ffffffffffffffda RBX: 00007ffd33b21530 RCX: 00007fd4c3016387 [ 295.186051][ C0] RDX: 00007ffd33b21400 RSI: 00007ffd33b21530 RDI: 0000000000000021 [ 295.194016][ C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 295.201979][ C0] R10: 0000000000000000 R11: 0000000000000202 R12: 0000555555827370 [ 295.210260][ C0] R13: 0000000000000002 R14: 00007ffd33b21a10 R15: 00007ffd33b21a00 [ 295.218254][ C0]