Warning: Permanently added '10.128.1.23' (ED25519) to the list of known hosts. executing program executing program [ 292.181927][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 292.188977][ C0] (detected by 0, t=10502 jiffies, g=3581, q=30) [ 292.195385][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10500 (4294966349-4294955849), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 292.208737][ C0] rcu: rcu_preempt kthread starved for 10500 jiffies! g3581 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 292.219833][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 292.229795][ C0] rcu: RCU grace-period kthread stack dump: [ 292.235680][ C0] task:rcu_preempt state:R running task stack:27064 pid: 15 ppid: 2 flags:0x00004000 [ 292.246469][ C0] Call Trace: [ 292.249750][ C0] [ 292.252676][ C0] __schedule+0x12c4/0x45b0 [ 292.257202][ C0] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 292.263110][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 292.269447][ C0] ? __mod_timer+0xa8e/0xeb0 [ 292.274037][ C0] ? release_firmware_map_entry+0x190/0x190 [ 292.279930][ C0] ? mod_timer_pending+0x20/0x20 [ 292.284867][ C0] ? lockdep_softirqs_off+0x420/0x420 [ 292.290240][ C0] schedule+0x11b/0x1f0 [ 292.294394][ C0] schedule_timeout+0x1b9/0x300 [ 292.299259][ C0] ? console_conditional_schedule+0x40/0x40 [ 292.305244][ C0] ? update_process_times+0x200/0x200 [ 292.310618][ C0] ? prepare_to_swait_event+0x321/0x340 [ 292.316161][ C0] rcu_gp_fqs_loop+0x2bf/0x1080 [ 292.321014][ C0] ? dump_blkd_tasks+0x810/0x810 [ 292.325950][ C0] ? rcu_gp_init+0x1140/0x1140 [ 292.330712][ C0] ? finish_swait+0xc5/0x1d0 [ 292.335395][ C0] rcu_gp_kthread+0xa4/0x360 [ 292.339987][ C0] ? _raw_spin_unlock+0x40/0x40 [ 292.345111][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 292.350215][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 292.356112][ C0] ? __kthread_parkme+0x15c/0x1c0 [ 292.361134][ C0] kthread+0x3f6/0x4f0 [ 292.365223][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 292.370329][ C0] ? kthread_blkcg+0xd0/0xd0 [ 292.374918][ C0] ret_from_fork+0x1f/0x30 [ 292.379340][ C0] [ 292.382351][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 292.388666][ C0] NMI backtrace for cpu 0 [ 292.392991][ C0] CPU: 0 PID: 3548 Comm: syz-executor172 Not tainted 5.15.161-syzkaller #0 [ 292.401569][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 [ 292.411615][ C0] Call Trace: [ 292.414887][ C0] [ 292.417724][ C0] dump_stack_lvl+0x1e3/0x2d0 [ 292.422400][ C0] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 292.428457][ C0] ? panic+0x860/0x860 [ 292.432528][ C0] nmi_cpu_backtrace+0x46a/0x4a0 [ 292.437456][ C0] ? __wake_up_klogd+0xd5/0x100 [ 292.442302][ C0] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 292.448444][ C0] ? _printk+0xd1/0x120 [ 292.452595][ C0] ? cpu_online+0x1f/0x40 [ 292.456923][ C0] ? panic+0x860/0x860 [ 292.460993][ C0] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 292.467048][ C0] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 292.473021][ C0] rcu_check_gp_kthread_starvation+0x1d2/0x240 [ 292.479170][ C0] print_other_cpu_stall+0x137a/0x14d0 [ 292.484630][ C0] ? print_cpu_stall+0x600/0x600 [ 292.489558][ C0] ? __lock_acquire+0x1ff0/0x1ff0 [ 292.494577][ C0] ? do_raw_spin_unlock+0x137/0x8b0 [ 292.499769][ C0] rcu_sched_clock_irq+0xa38/0x1150 [ 292.504960][ C0] ? rcutree_dead_cpu+0x20/0x20 [ 292.509807][ C0] ? hrtimer_run_queues+0x163/0x450 [ 292.515005][ C0] ? account_process_tick+0x232/0x3a0 [ 292.520369][ C0] update_process_times+0x196/0x200 [ 292.525562][ C0] tick_sched_timer+0x386/0x550 [ 292.530403][ C0] ? tick_setup_sched_timer+0x2d0/0x2d0 [ 292.535941][ C0] __hrtimer_run_queues+0x55b/0xcf0 [ 292.541143][ C0] ? hrtimer_interrupt+0x980/0x980 [ 292.546244][ C0] ? ktime_get_update_offsets_now+0x407/0x420 [ 292.552306][ C0] hrtimer_interrupt+0x392/0x980 [ 292.557256][ C0] __sysvec_apic_timer_interrupt+0x139/0x470 [ 292.563247][ C0] sysvec_apic_timer_interrupt+0x8c/0xb0 [ 292.568881][ C0] [ 292.571805][ C0] [ 292.574725][ C0] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 292.580706][ C0] RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 [ 292.586512][ C0] Code: 21 80 f6 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 be 11 3b f7 48 89 df e8 96 65 3c f7 e8 b1 1d 5f f7 fb bf 01 00 00 00 d6 ab 2f f7 65 8b 05 57 b2 da 75 85 c0 74 02 5b c3 e8 24 cf d8 [ 292.606116][ C0] RSP: 0018:ffffc90002f67bc0 EFLAGS: 00000282 [ 292.612180][ C0] RAX: e2aa5cbda438d800 RBX: ffff8880228e2500 RCX: ffffffff913f0f03 [ 292.620139][ C0] RDX: dffffc0000000000 RSI: ffffffff8a8b2a00 RDI: 0000000000000001 [ 292.628101][ C0] RBP: 0000000000000000 R08: ffffffff8186db40 R09: ffffed100451c4a1 [ 292.636065][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000021 [ 292.644027][ C0] R13: dffffc0000000000 R14: ffff8880228e2998 R15: ffff8880228e2500 [ 292.651992][ C0] ? trace_hardirqs_on+0x30/0x80 [ 292.656936][ C0] get_signal+0x13ee/0x14e0 [ 292.661444][ C0] arch_do_signal_or_restart+0xc3/0x1890 [ 292.667070][ C0] ? __do_compat_sys_x32_rt_sigreturn+0x250/0x250 [ 292.673481][ C0] ? __might_fault+0xb4/0x110 [ 292.678153][ C0] ? _copy_from_user+0x10f/0x170 [ 292.683081][ C0] ? restore_altstack+0x274/0x400 [ 292.688097][ C0] ? get_sigframe_size+0x10/0x10 [ 292.693027][ C0] ? __ia32_sys_sigaltstack+0x60/0x60 [ 292.698399][ C0] ? __do_sys_rt_sigreturn+0x19d/0x250 [ 292.703850][ C0] ? exit_to_user_mode_loop+0x39/0x130 [ 292.709300][ C0] exit_to_user_mode_loop+0x97/0x130 [ 292.714579][ C0] exit_to_user_mode_prepare+0xb1/0x140 [ 292.720115][ C0] syscall_exit_to_user_mode+0x5d/0x240 [ 292.725656][ C0] do_syscall_64+0x47/0xb0 [ 292.730062][ C0] ? clear_bhb_loop+0x15/0x70 [ 292.734731][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 292.740612][ C0] RIP: 0033:0x7f115de8ee79 [ 292.745021][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 18 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 b0 ff ff ff f7 d8 64 89 01 48 [ 292.764613][ C0] RSP: 002b:00007ffc34c9ac98 EFLAGS: 00000246 [ 292.770669][ C0] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f115de8ee79 [ 292.778630][ C0] RDX: 0000000020000280 RSI: 0000000000000000 RDI: 0000000000000000 [ 292.786591][ C0] RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000 [ 292.794548][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 292.802507][ C0] R13: 0000000000000004 R14: 00007ffc34c9ad10 R15: 00007ffc34c9ad00 [ 292.810481][ C0]