Warning: Permanently added '10.128.1.60' (ED25519) to the list of known hosts. executing program executing program [ 256.988419][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 256.995487][ C1] (detected by 1, t=10502 jiffies, g=5577, q=45) [ 257.001922][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294962823-4294952321), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 257.015662][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g5577 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 257.026969][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 257.036946][ C1] rcu: RCU grace-period kthread stack dump: [ 257.042850][ C1] task:rcu_preempt state:R running task stack:28192 pid: 15 ppid: 2 flags:0x00004000 [ 257.053690][ C1] Call Trace: [ 257.056982][ C1] [ 257.059931][ C1] __schedule+0x11b8/0x43b0 [ 257.064490][ C1] ? _raw_spin_lock_irqsave+0x7f/0xf0 [ 257.069992][ C1] ? _raw_spin_unlock_irqrestore+0x82/0x100 [ 257.076145][ C1] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 257.082245][ C1] ? _raw_spin_unlock+0x40/0x40 [ 257.087130][ C1] ? rcu_is_watching+0x11/0xa0 [ 257.091918][ C1] ? release_firmware_map_entry+0x190/0x190 [ 257.097851][ C1] schedule+0x11b/0x1e0 [ 257.102038][ C1] schedule_timeout+0x15c/0x280 [ 257.106928][ C1] ? console_conditional_schedule+0x40/0x40 [ 257.112847][ C1] ? update_process_times+0x200/0x200 [ 257.118252][ C1] ? prepare_to_swait_event+0x331/0x350 [ 257.123825][ C1] rcu_gp_fqs_loop+0x29e/0x11b0 [ 257.128706][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 257.133927][ C1] ? rcu_gp_init+0xd58/0x10e0 [ 257.138623][ C1] ? rcu_gp_init+0x10e0/0x10e0 [ 257.143410][ C1] ? _raw_spin_unlock_irq+0x1f/0x40 [ 257.148631][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 257.153853][ C1] rcu_gp_kthread+0x98/0x350 [ 257.158471][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 257.163692][ C1] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 257.169607][ C1] ? __kthread_parkme+0x157/0x1b0 [ 257.174675][ C1] kthread+0x436/0x520 [ 257.178781][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 257.183945][ C1] ? kthread_blkcg+0xd0/0xd0 [ 257.188558][ C1] ret_from_fork+0x1f/0x30 [ 257.193005][ C1] [ 257.196050][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 257.202393][ C1] NMI backtrace for cpu 1 [ 257.206743][ C1] CPU: 1 PID: 4213 Comm: syz-executor226 Not tainted 5.15.184-syzkaller #0 [ 257.215343][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 257.225414][ C1] Call Trace: [ 257.228712][ C1] [ 257.231570][ C1] dump_stack_lvl+0x168/0x230 [ 257.236273][ C1] ? show_regs_print_info+0x20/0x20 [ 257.241490][ C1] ? load_image+0x3b0/0x3b0 [ 257.246014][ C1] ? irq_work_queue+0xbf/0x140 [ 257.250802][ C1] nmi_cpu_backtrace+0x397/0x3d0 [ 257.255772][ C1] ? nmi_trigger_cpumask_backtrace+0x280/0x280 [ 257.261954][ C1] ? _printk+0xcc/0x110 [ 257.266130][ C1] ? cpu_online+0x1d/0x30 [ 257.270649][ C1] ? load_image+0x3b0/0x3b0 [ 257.275169][ C1] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 257.281253][ C1] nmi_trigger_cpumask_backtrace+0x163/0x280 [ 257.287259][ C1] rcu_check_gp_kthread_starvation+0x1cd/0x250 [ 257.293444][ C1] print_other_cpu_stall+0x10c8/0x1220 [ 257.298936][ C1] ? print_cpu_stall+0x5f0/0x5f0 [ 257.303898][ C1] ? timekeeping_advance+0x7f6/0xac0 [ 257.309204][ C1] ? __lock_acquire+0x7c60/0x7c60 [ 257.314263][ C1] rcu_sched_clock_irq+0x831/0x1110 [ 257.319486][ C1] ? rcutree_dead_cpu+0x20/0x20 [ 257.324360][ C1] ? hrtimer_run_queues+0x162/0x440 [ 257.329576][ C1] ? account_process_tick+0x227/0x3a0 [ 257.334971][ C1] update_process_times+0x193/0x200 [ 257.340294][ C1] tick_sched_timer+0x37d/0x560 [ 257.345185][ C1] __hrtimer_run_queues+0x4fe/0xc40 [ 257.350413][ C1] ? tick_setup_sched_timer+0x2c0/0x2c0 [ 257.355994][ C1] ? hrtimer_interrupt+0x8d0/0x8d0 [ 257.361131][ C1] ? ktime_get_update_offsets_now+0x3ce/0x3e0 [ 257.367226][ C1] hrtimer_interrupt+0x3bb/0x8d0 [ 257.372210][ C1] __sysvec_apic_timer_interrupt+0x137/0x4a0 [ 257.378215][ C1] sysvec_apic_timer_interrupt+0x9b/0xc0 [ 257.383869][ C1] [ 257.386912][ C1] [ 257.389854][ C1] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 257.395872][ C1] RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 [ 257.401898][ C1] Code: f6 ff 0f 1f 00 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 ce d9 b1 f7 48 89 df e8 96 ae b2 f7 e8 d1 52 d3 f7 fb bf 01 00 00 00 c6 d2 a6 f7 65 8b 05 37 e3 57 76 85 c0 74 02 5b c3 e8 e4 ed 55 [ 257.421528][ C1] RSP: 0018:ffffc90002ecfbc0 EFLAGS: 00000282 [ 257.427617][ C1] RAX: 4e9f37e0ecd65c00 RBX: ffff88807d415340 RCX: 4e9f37e0ecd65c00 [ 257.435605][ C1] RDX: dffffc0000000000 RSI: ffffffff8a0b11c0 RDI: 0000000000000001 [ 257.443684][ C1] RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed100fa82a69 [ 257.451670][ C1] R10: ffffed100fa82a69 R11: 1ffff1100fa82a68 R12: ffff88807d415340 [ 257.459748][ C1] R13: 0000000000000021 R14: dffffc0000000000 R15: 000000001c000004 [ 257.467847][ C1] get_signal+0x11d6/0x12c0 [ 257.472403][ C1] arch_do_signal_or_restart+0xc1/0x1300 [ 257.478053][ C1] ? _copy_from_user+0x111/0x170 [ 257.483023][ C1] ? __ia32_sys_rt_sigreturn+0x660/0x790 [ 257.488684][ C1] ? load_gs_index+0x120/0x120 [ 257.493486][ C1] ? get_sigframe_size+0x10/0x10 [ 257.498603][ C1] ? exit_to_user_mode_loop+0x3b/0x130 [ 257.504103][ C1] exit_to_user_mode_loop+0x9e/0x130 [ 257.509412][ C1] exit_to_user_mode_prepare+0xb1/0x140 [ 257.515154][ C1] syscall_exit_to_user_mode+0x16/0x40 [ 257.520635][ C1] do_syscall_64+0x58/0xa0 [ 257.525067][ C1] ? clear_bhb_loop+0x30/0x80 [ 257.529758][ C1] ? clear_bhb_loop+0x30/0x80 [ 257.534450][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 257.540372][ C1] RIP: 0033:0x7f0d5d8d07c9 [ 257.544818][ C1] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 1d 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 [ 257.564536][ C1] RSP: 002b:00007ffd31ed5438 EFLAGS: 00000246 [ 257.570717][ C1] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f0d5d8d07c9 [ 257.578721][ C1] RDX: 000020000006b000 RSI: 0000000000000000 RDI: 0000000000000000 [ 257.586761][ C1] RBP: 0000000000000000 R08: 00007f0d5d888990 R09: 00007f0d5d888990 [ 257.594776][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0d5d92705c [ 257.602782][ C1] R13: 00007f0d5d92010f R14: 00007ffd31ed5470 R15: 0000000000000000 [ 257.610794][ C1]