Warning: Permanently added '10.128.1.241' (ED25519) to the list of known hosts. executing program [ 199.482022][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 199.489133][ C1] (detected by 1, t=10502 jiffies, g=5569, q=59) [ 199.495569][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10501 (4294957064-4294946563), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 199.508969][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g5569 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 199.520101][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 199.530096][ C1] rcu: RCU grace-period kthread stack dump: [ 199.536010][ C1] task:rcu_preempt state:R running task stack:27848 pid: 15 ppid: 2 flags:0x00004000 [ 199.546838][ C1] Call Trace: [ 199.550138][ C1] [ 199.553090][ C1] __schedule+0x11bb/0x4390 [ 199.557755][ C1] ? _raw_spin_lock_irqsave+0x7f/0xf0 [ 199.563156][ C1] ? _raw_spin_unlock_irqrestore+0x82/0x100 [ 199.569160][ C1] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 199.575074][ C1] ? _raw_spin_unlock+0x40/0x40 [ 199.579956][ C1] ? rcu_is_watching+0x11/0xa0 [ 199.584748][ C1] ? release_firmware_map_entry+0x190/0x190 [ 199.590683][ C1] schedule+0x11b/0x1e0 [ 199.594864][ C1] schedule_timeout+0x15c/0x280 [ 199.599830][ C1] ? console_conditional_schedule+0x40/0x40 [ 199.605921][ C1] ? _raw_spin_unlock_irqrestore+0x82/0x100 [ 199.611853][ C1] ? update_process_times+0x200/0x200 [ 199.617262][ C1] ? prepare_to_swait_event+0x331/0x350 [ 199.622845][ C1] rcu_gp_fqs_loop+0x29e/0x11b0 [ 199.627731][ C1] ? dump_blkd_tasks+0x7e0/0x7e0 [ 199.632721][ C1] ? rcu_gp_init+0x10e0/0x10e0 [ 199.637507][ C1] ? _raw_spin_unlock_irq+0x1f/0x40 [ 199.642726][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 199.647963][ C1] rcu_gp_kthread+0x98/0x350 [ 199.652590][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 199.657732][ C1] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 199.663688][ C1] ? __kthread_parkme+0x157/0x1b0 [ 199.668754][ C1] kthread+0x436/0x520 [ 199.672845][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 199.677974][ C1] ? kthread_blkcg+0xd0/0xd0 [ 199.682600][ C1] ret_from_fork+0x1f/0x30 [ 199.687062][ C1] [ 199.690099][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 199.696437][ C1] NMI backtrace for cpu 1 [ 199.700795][ C1] CPU: 1 PID: 4216 Comm: syz-executor424 Not tainted syzkaller #0 [ 199.708617][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 [ 199.718688][ C1] Call Trace: [ 199.721988][ C1] [ 199.724847][ C1] dump_stack_lvl+0x168/0x230 [ 199.729564][ C1] ? show_regs_print_info+0x20/0x20 [ 199.734794][ C1] ? load_image+0x3b0/0x3b0 [ 199.739329][ C1] ? irq_work_queue+0xbf/0x140 [ 199.744125][ C1] nmi_cpu_backtrace+0x397/0x3d0 [ 199.749090][ C1] ? nmi_trigger_cpumask_backtrace+0x280/0x280 [ 199.755278][ C1] ? _printk+0xcc/0x110 [ 199.759463][ C1] ? cpu_online+0x1d/0x30 [ 199.763812][ C1] ? load_image+0x3b0/0x3b0 [ 199.768347][ C1] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 199.774446][ C1] nmi_trigger_cpumask_backtrace+0x163/0x280 [ 199.780461][ C1] rcu_check_gp_kthread_starvation+0x1cd/0x250 [ 199.786665][ C1] print_other_cpu_stall+0x10c8/0x1220 [ 199.792156][ C1] ? print_cpu_stall+0x5f0/0x5f0 [ 199.797120][ C1] ? rcu_qs+0xc1/0x160 [ 199.801225][ C1] ? rcu_softirq_qs+0x280/0x280 [ 199.806116][ C1] rcu_sched_clock_irq+0x831/0x1110 [ 199.811344][ C1] ? rcutree_dead_cpu+0x20/0x20 [ 199.816228][ C1] ? hrtimer_run_queues+0x162/0x440 [ 199.821544][ C1] ? account_process_tick+0x227/0x3a0 [ 199.827027][ C1] update_process_times+0x193/0x200 [ 199.832256][ C1] tick_sched_timer+0x37d/0x560 [ 199.837137][ C1] __hrtimer_run_queues+0x4fe/0xc40 [ 199.842370][ C1] ? tick_setup_sched_timer+0x2c0/0x2c0 [ 199.847953][ C1] ? hrtimer_interrupt+0x8d0/0x8d0 [ 199.853088][ C1] ? ktime_get_update_offsets_now+0x3ce/0x3e0 [ 199.859180][ C1] hrtimer_interrupt+0x3bb/0x8d0 [ 199.864279][ C1] __sysvec_apic_timer_interrupt+0x137/0x4a0 [ 199.870304][ C1] sysvec_apic_timer_interrupt+0x9b/0xc0 [ 199.875974][ C1] [ 199.878934][ C1] [ 199.881887][ C1] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 199.887910][ C1] RIP: 0010:__local_bh_enable_ip+0x132/0x1b0 [ 199.893921][ C1] Code: 8a e8 82 cc 60 08 65 66 8b 05 ca 25 bb 7e 66 85 c0 75 54 bf 01 00 00 00 e8 9b fe 08 00 e8 e6 74 35 00 fb 65 8b 05 76 fc b9 7e <85> c0 75 05 e8 25 07 b8 ff 48 c7 04 24 0e 36 e0 45 4b c7 04 37 00 [ 199.913555][ C1] RSP: 0018:ffffc90002fefaa0 EFLAGS: 00000286 [ 199.919650][ C1] RAX: 0000000080000000 RBX: 0000000000000200 RCX: 4550019b02741700 [ 199.927650][ C1] RDX: dffffc0000000000 RSI: ffffffff8a0b1820 RDI: ffffffff8a59a4c0 [ 199.935908][ C1] RBP: ffffc90002fefb30 R08: dffffc0000000000 R09: ffffed10034fe3b9 [ 199.943990][ C1] R10: ffffed10034fe3b9 R11: 1ffff110034fe3b8 R12: ffffffff812bde85 [ 199.951982][ C1] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920005fdf54 [ 199.959979][ C1] ? local_bh_enable+0x5/0x20 [ 199.964736][ C1] ? _local_bh_enable+0xa0/0xa0 [ 199.969611][ C1] ? rcu_is_watching+0x11/0xa0 [ 199.974407][ C1] fpu__restore_sig+0x785/0xf50 [ 199.979294][ C1] ? copy_fpstate_to_sigframe+0xb90/0xb90 [ 199.985062][ C1] ? __might_fault+0xb3/0x110 [ 199.989885][ C1] ? _copy_from_user+0x111/0x170 [ 199.994870][ C1] __ia32_sys_rt_sigreturn+0x649/0x790 [ 200.000375][ C1] ? load_gs_index+0x120/0x120 [ 200.005279][ C1] ? lock_chain_count+0x20/0x20 [ 200.010173][ C1] ? vtime_user_exit+0x2dc/0x400 [ 200.015238][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 200.020553][ C1] do_syscall_64+0x4c/0xa0 [ 200.024996][ C1] ? clear_bhb_loop+0x30/0x80 [ 200.029783][ C1] ? clear_bhb_loop+0x30/0x80 [ 200.034487][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 200.040405][ C1] RIP: 0033:0x7fe46d6b3119 [ 200.044846][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 19 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 [ 200.064593][ C1] RSP: 002b:00007ffdacd4bc98 EFLAGS: 00000246 [ 200.070696][ C1] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fe46d6b3119 [ 200.078801][ C1] RDX: 000020000006b000 RSI: 0000000000000000 RDI: 0000000000000000 [ 200.087154][ C1] RBP: 0000000000000000 R08: 00007fe46d71033c R09: 00007fe46d71033c [ 200.095149][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe46d71033c [ 200.103150][ C1] R13: 00007fe46d70a106 R14: 00007ffdacd4bce0 R15: 0000000000000000 [ 200.111176][ C1]