Warning: Permanently added '10.128.0.89' (ED25519) to the list of known hosts. executing program executing program [ 158.240557][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 158.247639][ C0] (detected by 0, t=10502 jiffies, g=3893, q=210) [ 158.254138][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294952967-4294942464), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 158.267505][ C0] rcu: rcu_preempt kthread starved for 10504 jiffies! g3893 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 158.278612][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 158.288575][ C0] rcu: RCU grace-period kthread stack dump: [ 158.294462][ C0] task:rcu_preempt state:R running task stack:28192 pid: 15 ppid: 2 flags:0x00004000 [ 158.305262][ C0] Call Trace: [ 158.308534][ C0] [ 158.311462][ C0] __schedule+0x11bb/0x4390 [ 158.316009][ C0] ? _raw_spin_lock_irqsave+0x7f/0xf0 [ 158.321386][ C0] ? _raw_spin_unlock_irqrestore+0x82/0x100 [ 158.327278][ C0] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 158.333172][ C0] ? _raw_spin_unlock+0x40/0x40 [ 158.338016][ C0] ? rcu_is_watching+0x11/0xa0 [ 158.342776][ C0] ? release_firmware_map_entry+0x190/0x190 [ 158.348679][ C0] schedule+0x11b/0x1e0 [ 158.352835][ C0] schedule_timeout+0x15c/0x280 [ 158.357692][ C0] ? console_conditional_schedule+0x40/0x40 [ 158.363583][ C0] ? update_process_times+0x200/0x200 [ 158.368958][ C0] ? prepare_to_swait_event+0x331/0x350 [ 158.374511][ C0] rcu_gp_fqs_loop+0x29e/0x11b0 [ 158.379367][ C0] ? lockdep_hardirqs_on+0x94/0x140 [ 158.384565][ C0] ? rcu_gp_init+0xd58/0x10e0 [ 158.389239][ C0] ? rcu_gp_init+0x10e0/0x10e0 [ 158.394003][ C0] ? _raw_spin_unlock_irq+0x1f/0x40 [ 158.399197][ C0] ? lockdep_hardirqs_on+0x94/0x140 [ 158.404390][ C0] rcu_gp_kthread+0x98/0x350 [ 158.408979][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 158.414083][ C0] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 158.419975][ C0] ? __kthread_parkme+0x157/0x1b0 [ 158.425002][ C0] kthread+0x436/0x520 [ 158.429068][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 158.434170][ C0] ? kthread_blkcg+0xd0/0xd0 [ 158.438759][ C0] ret_from_fork+0x1f/0x30 [ 158.443180][ C0] [ 158.446193][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 158.452507][ C0] NMI backtrace for cpu 0 [ 158.456839][ C0] CPU: 0 PID: 4210 Comm: syz-executor693 Not tainted syzkaller #0 [ 158.464637][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 [ 158.474685][ C0] Call Trace: [ 158.477959][ C0] [ 158.480797][ C0] dump_stack_lvl+0x168/0x230 [ 158.485474][ C0] ? show_regs_print_info+0x20/0x20 [ 158.490675][ C0] ? load_image+0x3b0/0x3b0 [ 158.495181][ C0] ? irq_work_queue+0xbf/0x140 [ 158.499946][ C0] nmi_cpu_backtrace+0x397/0x3d0 [ 158.504884][ C0] ? nmi_trigger_cpumask_backtrace+0x280/0x280 [ 158.511293][ C0] ? _printk+0xcc/0x110 [ 158.515445][ C0] ? cpu_online+0x1d/0x30 [ 158.519774][ C0] ? load_image+0x3b0/0x3b0 [ 158.524273][ C0] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 158.530335][ C0] nmi_trigger_cpumask_backtrace+0x163/0x280 [ 158.536314][ C0] rcu_check_gp_kthread_starvation+0x1cd/0x250 [ 158.542473][ C0] print_other_cpu_stall+0x10c8/0x1220 [ 158.547938][ C0] ? print_cpu_stall+0x5f0/0x5f0 [ 158.552873][ C0] ? rcu_qs+0xc1/0x160 [ 158.556939][ C0] ? rcu_softirq_qs+0x280/0x280 [ 158.561793][ C0] rcu_sched_clock_irq+0x831/0x1110 [ 158.566993][ C0] ? rcutree_dead_cpu+0x20/0x20 [ 158.571838][ C0] ? hrtimer_run_queues+0x162/0x440 [ 158.577033][ C0] ? account_process_tick+0x227/0x3a0 [ 158.582404][ C0] update_process_times+0x193/0x200 [ 158.587602][ C0] tick_sched_timer+0x37d/0x560 [ 158.592458][ C0] __hrtimer_run_queues+0x4fe/0xc40 [ 158.597663][ C0] ? tick_setup_sched_timer+0x2c0/0x2c0 [ 158.603210][ C0] ? hrtimer_interrupt+0x8d0/0x8d0 [ 158.608339][ C0] ? ktime_get_update_offsets_now+0x3ce/0x3e0 [ 158.614409][ C0] hrtimer_interrupt+0x3bb/0x8d0 [ 158.619361][ C0] __sysvec_apic_timer_interrupt+0x137/0x4a0 [ 158.625346][ C0] sysvec_apic_timer_interrupt+0x9b/0xc0 [ 158.631072][ C0] [ 158.634005][ C0] [ 158.636929][ C0] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 158.642915][ C0] RIP: 0010:arch_do_signal_or_restart+0x1eb/0x1300 [ 158.649418][ C0] Code: b4 24 70 01 00 00 4d 8d af 80 05 00 00 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 21 10 00 00 <41> f6 45 00 08 48 8b 5c 24 10 0f 85 7e 0e 00 00 49 8d 87 30 09 00 [ 158.669030][ C0] RSP: 0018:ffffc9000306fcc0 EFLAGS: 00000246 [ 158.675097][ C0] RAX: 0000000000000000 RBX: ffffc9000306ff58 RCX: dffffc0000000000 [ 158.683062][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8880797a9dc0 [ 158.691025][ C0] RBP: ffffc9000306fec0 R08: dffffc0000000000 R09: ffffed100f2f53b9 [ 158.699000][ C0] R10: ffffed100f2f53b9 R11: 1ffff1100f2f53b8 R12: ffffc9000306fde0 [ 158.706980][ C0] R13: ffff8880797aa340 R14: 0000000000000021 R15: ffff8880797a9dc0 [ 158.714966][ C0] ? _copy_from_user+0x111/0x170 [ 158.719911][ C0] ? __ia32_sys_rt_sigreturn+0x660/0x790 [ 158.725547][ C0] ? load_gs_index+0x120/0x120 [ 158.730310][ C0] ? get_sigframe_size+0x10/0x10 [ 158.735263][ C0] ? exit_to_user_mode_loop+0x3b/0x130 [ 158.740722][ C0] exit_to_user_mode_loop+0x9e/0x130 [ 158.746006][ C0] exit_to_user_mode_prepare+0xee/0x180 [ 158.751547][ C0] syscall_exit_to_user_mode+0x16/0x40 [ 158.757003][ C0] do_syscall_64+0x58/0xa0 [ 158.761413][ C0] ? clear_bhb_loop+0x30/0x80 [ 158.766091][ C0] ? clear_bhb_loop+0x30/0x80 [ 158.770771][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 158.776661][ C0] RIP: 0033:0x7f4006f03259 [ 158.781075][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 1a 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 [ 158.800673][ C0] RSP: 002b:00007ffee2ebb988 EFLAGS: 00000246 [ 158.806738][ C0] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f4006f03259 [ 158.814716][ C0] RDX: 000020000006b000 RSI: 0000000000000000 RDI: 0000000000000000 [ 158.822681][ C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 158.830644][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4006f5a149 [ 158.838610][ C0] R13: 00007ffee2ebbcb0 R14: 00007ffee2ebb9c0 R15: 0000000000000000 [ 158.846592][ C0]