Warning: Permanently added '10.128.1.109' (ED25519) to the list of known hosts. executing program executing program [ 181.823555][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 181.830690][ C0] (detected by 0, t=10502 jiffies, g=5325, q=70) [ 181.837118][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294955308-4294944806), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 181.850500][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g5325 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 181.861620][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 181.871594][ C0] rcu: RCU grace-period kthread stack dump: [ 181.877495][ C0] task:rcu_preempt state:R running task stack:27000 pid: 15 ppid: 2 flags:0x00004000 [ 181.888310][ C0] Call Trace: [ 181.891596][ C0] [ 181.894626][ C0] __schedule+0x12c4/0x45b0 [ 181.899173][ C0] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 181.905085][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 181.911003][ C0] ? __mod_timer+0xa8e/0xeb0 [ 181.915618][ C0] ? release_firmware_map_entry+0x190/0x190 [ 181.921523][ C0] ? mod_timer_pending+0x20/0x20 [ 181.926914][ C0] ? lockdep_softirqs_off+0x420/0x420 [ 181.932307][ C0] schedule+0x11b/0x1f0 [ 181.936479][ C0] schedule_timeout+0x1b9/0x300 [ 181.941347][ C0] ? console_conditional_schedule+0x40/0x40 [ 181.947256][ C0] ? update_process_times+0x200/0x200 [ 181.952659][ C0] ? prepare_to_swait_event+0x321/0x340 [ 181.958226][ C0] rcu_gp_fqs_loop+0x2bf/0x1080 [ 181.963099][ C0] ? _raw_spin_unlock_irq+0x1f/0x40 [ 181.968309][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 181.973523][ C0] ? rcu_gp_init+0xdae/0x1140 [ 181.978217][ C0] ? rcu_gp_init+0x1140/0x1140 [ 181.983001][ C0] ? finish_swait+0xc5/0x1d0 [ 181.987608][ C0] rcu_gp_kthread+0xa4/0x360 [ 181.992301][ C0] ? _raw_spin_unlock+0x40/0x40 [ 181.997165][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 182.002322][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 182.008238][ C0] ? __kthread_parkme+0x15c/0x1c0 [ 182.013284][ C0] kthread+0x3f6/0x4f0 [ 182.017458][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 182.022590][ C0] ? kthread_blkcg+0xd0/0xd0 [ 182.027196][ C0] ret_from_fork+0x1f/0x30 [ 182.031642][ C0] [ 182.034670][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 182.040998][ C0] NMI backtrace for cpu 0 [ 182.045343][ C0] CPU: 0 PID: 4190 Comm: syz-executor394 Not tainted 5.15.179-syzkaller #0 [ 182.053937][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 182.064018][ C0] Call Trace: [ 182.067313][ C0] [ 182.070163][ C0] dump_stack_lvl+0x1e3/0x2d0 [ 182.074858][ C0] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 182.080505][ C0] ? panic+0x860/0x860 [ 182.084596][ C0] nmi_cpu_backtrace+0x46a/0x4a0 [ 182.089552][ C0] ? __wake_up_klogd+0xd5/0x100 [ 182.094426][ C0] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 182.100594][ C0] ? _printk+0xd1/0x120 [ 182.104765][ C0] ? cpu_online+0x1f/0x40 [ 182.109115][ C0] ? panic+0x860/0x860 [ 182.113203][ C0] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 182.119286][ C0] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 182.125380][ C0] rcu_check_gp_kthread_starvation+0x1d2/0x240 [ 182.131565][ C0] print_other_cpu_stall+0x137a/0x14d0 [ 182.137056][ C0] ? print_cpu_stall+0x600/0x600 [ 182.142007][ C0] ? __lock_acquire+0x1ff0/0x1ff0 [ 182.147051][ C0] ? do_raw_spin_unlock+0x137/0x8b0 [ 182.152275][ C0] rcu_sched_clock_irq+0xa38/0x1150 [ 182.157759][ C0] ? rcutree_dead_cpu+0x20/0x20 [ 182.162635][ C0] ? hrtimer_run_queues+0x163/0x450 [ 182.167844][ C0] ? account_process_tick+0x232/0x3a0 [ 182.173240][ C0] update_process_times+0x196/0x200 [ 182.178465][ C0] tick_sched_timer+0x386/0x550 [ 182.183334][ C0] ? tick_setup_sched_timer+0x2d0/0x2d0 [ 182.188898][ C0] __hrtimer_run_queues+0x55b/0xcf0 [ 182.194126][ C0] ? hrtimer_interrupt+0x980/0x980 [ 182.199335][ C0] ? ktime_get_update_offsets_now+0x407/0x420 [ 182.205432][ C0] hrtimer_interrupt+0x392/0x980 [ 182.210416][ C0] __sysvec_apic_timer_interrupt+0x13b/0x4b0 [ 182.216439][ C0] sysvec_apic_timer_interrupt+0x9b/0xc0 [ 182.222098][ C0] [ 182.225039][ C0] [ 182.228041][ C0] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 182.234037][ C0] RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 [ 182.239858][ C0] Code: 31 60 f6 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 ce 67 19 f7 48 89 df e8 26 bc 1a f7 e8 11 7c 3d f7 fb bf 01 00 00 00 16 00 0e f7 65 8b 05 87 d0 b8 75 85 c0 74 02 5b c3 e8 54 ed b6 [ 182.259649][ C0] RSP: 0018:ffffc90002e6fbc0 EFLAGS: 00000282 [ 182.265737][ C0] RAX: 4d0cd37a9e5ff200 RBX: ffff88802b2e2e40 RCX: ffffffff96a95f03 [ 182.273721][ C0] RDX: dffffc0000000000 RSI: ffffffff8aab2a60 RDI: 0000000000000001 [ 182.281714][ C0] RBP: 0000000000000000 R08: ffffffff81871b70 R09: ffffed100565c5c9 [ 182.289697][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000021 [ 182.297683][ C0] R13: dffffc0000000000 R14: ffff88802b2e32d8 R15: ffff88802b2e2e40 [ 182.305675][ C0] ? trace_hardirqs_on+0x30/0x80 [ 182.310650][ C0] get_signal+0x13ee/0x14e0 [ 182.315185][ C0] arch_do_signal_or_restart+0xc3/0x1890 [ 182.320836][ C0] ? __do_compat_sys_x32_rt_sigreturn+0x250/0x250 [ 182.327271][ C0] ? __might_fault+0xb4/0x110 [ 182.331972][ C0] ? _copy_from_user+0x10f/0x170 [ 182.336928][ C0] ? restore_altstack+0x274/0x400 [ 182.341972][ C0] ? get_sigframe_size+0x10/0x10 [ 182.346926][ C0] ? __ia32_sys_sigaltstack+0x60/0x60 [ 182.352322][ C0] ? __do_sys_rt_sigreturn+0x19d/0x250 [ 182.357807][ C0] ? exit_to_user_mode_loop+0x39/0x130 [ 182.363284][ C0] exit_to_user_mode_loop+0x97/0x130 [ 182.368587][ C0] exit_to_user_mode_prepare+0xb1/0x140 [ 182.374147][ C0] syscall_exit_to_user_mode+0x5d/0x240 [ 182.379708][ C0] do_syscall_64+0x47/0xb0 [ 182.384138][ C0] ? clear_bhb_loop+0x15/0x70 [ 182.388831][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 182.394757][ C0] RIP: 0033:0x7f66df6ef899 [ 182.399207][ C0] 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 [ 182.418978][ C0] RSP: 002b:00007ffc54832038 EFLAGS: 00000246 [ 182.425089][ C0] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f66df6ef899 [ 182.433079][ C0] RDX: 000040000006b000 RSI: 0000000000000000 RDI: 0000000000000000 [ 182.441066][ C0] RBP: 0000000000000000 R08: 00007f66df6af990 R09: 00007f66df6af990 [ 182.449050][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f66df74d33c [ 182.457037][ C0] R13: 00007f66df747106 R14: 00007ffc54832070 R15: 0000000000000000 [ 182.465035][ C0]