Warning: Permanently added '10.128.0.72' (ED25519) to the list of known hosts. executing program executing program [ 294.829808][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 294.836870][ C0] (detected by 0, t=10502 jiffies, g=3453, q=16) [ 294.843279][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10500 (4294966621-4294956121), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 294.856634][ C0] rcu: rcu_preempt kthread starved for 10500 jiffies! g3453 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 294.867732][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 294.877691][ C0] rcu: RCU grace-period kthread stack dump: [ 294.883568][ C0] task:rcu_preempt state:R running task stack:27000 pid: 15 ppid: 2 flags:0x00004000 [ 294.894340][ C0] Call Trace: [ 294.897618][ C0] [ 294.900548][ C0] __schedule+0x12c4/0x45b0 [ 294.905183][ C0] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 294.911166][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 294.917241][ C0] ? __mod_timer+0xa8e/0xeb0 [ 294.921901][ C0] ? release_firmware_map_entry+0x190/0x190 [ 294.927791][ C0] ? mod_timer_pending+0x20/0x20 [ 294.932724][ C0] ? lockdep_softirqs_off+0x420/0x420 [ 294.938302][ C0] schedule+0x11b/0x1f0 [ 294.942462][ C0] schedule_timeout+0x1b9/0x300 [ 294.947310][ C0] ? console_conditional_schedule+0x40/0x40 [ 294.953199][ C0] ? update_process_times+0x200/0x200 [ 294.958572][ C0] ? prepare_to_swait_event+0x321/0x340 [ 294.964152][ C0] rcu_gp_fqs_loop+0x2bf/0x1080 [ 294.969032][ C0] ? dump_blkd_tasks+0x810/0x810 [ 294.974056][ C0] ? rcu_gp_init+0x1140/0x1140 [ 294.978818][ C0] ? finish_swait+0xc5/0x1d0 [ 294.983407][ C0] rcu_gp_kthread+0xa4/0x360 [ 294.987990][ C0] ? _raw_spin_unlock+0x40/0x40 [ 294.992845][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 294.997949][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 295.003846][ C0] ? __kthread_parkme+0x15c/0x1c0 [ 295.008903][ C0] kthread+0x3f6/0x4f0 [ 295.012965][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 295.018076][ C0] ? kthread_blkcg+0xd0/0xd0 [ 295.022664][ C0] ret_from_fork+0x1f/0x30 [ 295.027100][ C0] [ 295.030112][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 295.036425][ C0] NMI backtrace for cpu 0 [ 295.040739][ C0] CPU: 0 PID: 3544 Comm: syz-executor202 Not tainted 5.15.155-syzkaller #0 [ 295.049314][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 295.059359][ C0] Call Trace: [ 295.062632][ C0] [ 295.065469][ C0] dump_stack_lvl+0x1e3/0x2d0 [ 295.070179][ C0] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 295.075810][ C0] ? panic+0x860/0x860 [ 295.079925][ C0] nmi_cpu_backtrace+0x46a/0x4a0 [ 295.084899][ C0] ? __wake_up_klogd+0xd5/0x100 [ 295.089755][ C0] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 295.095911][ C0] ? _printk+0xd1/0x120 [ 295.100064][ C0] ? cpu_online+0x1f/0x40 [ 295.104393][ C0] ? panic+0x860/0x860 [ 295.108462][ C0] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 295.114566][ C0] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 295.120556][ C0] rcu_check_gp_kthread_starvation+0x1d2/0x240 [ 295.126711][ C0] print_other_cpu_stall+0x137a/0x14d0 [ 295.132180][ C0] ? print_cpu_stall+0x600/0x600 [ 295.137122][ C0] ? do_raw_spin_unlock+0x137/0x8b0 [ 295.142320][ C0] rcu_sched_clock_irq+0xa38/0x1150 [ 295.147523][ C0] ? rcutree_dead_cpu+0x20/0x20 [ 295.152368][ C0] ? hrtimer_run_queues+0x163/0x450 [ 295.157560][ C0] ? account_process_tick+0x232/0x3a0 [ 295.162993][ C0] update_process_times+0x196/0x200 [ 295.168192][ C0] tick_sched_timer+0x386/0x550 [ 295.173080][ C0] ? tick_setup_sched_timer+0x2d0/0x2d0 [ 295.178621][ C0] __hrtimer_run_queues+0x55b/0xcf0 [ 295.183827][ C0] ? hrtimer_interrupt+0x980/0x980 [ 295.188933][ C0] ? ktime_get_update_offsets_now+0x407/0x420 [ 295.195010][ C0] hrtimer_interrupt+0x392/0x980 [ 295.199967][ C0] __sysvec_apic_timer_interrupt+0x139/0x470 [ 295.205971][ C0] sysvec_apic_timer_interrupt+0x8c/0xb0 [ 295.211647][ C0] [ 295.214572][ C0] [ 295.217498][ C0] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 295.223476][ C0] RIP: 0010:lock_acquire+0x252/0x4f0 [ 295.228758][ C0] Code: 2b 00 74 08 4c 89 f7 e8 ec 71 67 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 [ 295.248362][ C0] RSP: 0018:ffffc90002e37900 EFLAGS: 00000206 [ 295.254439][ C0] RAX: 0000000000000001 RBX: 1ffff920005c6f2c RCX: ffffffff81636522 [ 295.262404][ C0] RDX: dffffc0000000000 RSI: ffffffff8a8b3ca0 RDI: ffffffff8ad8f400 [ 295.270376][ C0] RBP: ffffc90002e37a58 R08: dffffc0000000000 R09: fffffbfff1f7ec1f [ 295.278345][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920005c6f28 [ 295.286311][ C0] R13: dffffc0000000000 R14: ffffc90002e37960 R15: 0000000000000246 [ 295.294289][ C0] ? validate_chain+0x112/0x5930 [ 295.299241][ C0] ? read_lock_is_recursive+0x10/0x10 [ 295.304613][ C0] ? __might_sleep+0xc0/0xc0 [ 295.309199][ C0] ? __lock_acquire+0x1295/0x1ff0 [ 295.314227][ C0] __might_fault+0xb4/0x110 [ 295.318811][ C0] ? __might_fault+0x91/0x110 [ 295.323486][ C0] fpu__restore_sig+0x1db/0x1100 [ 295.328440][ C0] ? copy_fpstate_to_sigframe+0xb40/0xb40 [ 295.334168][ C0] ? __might_fault+0xb4/0x110 [ 295.338850][ C0] restore_sigcontext+0x638/0x710 [ 295.343910][ C0] ? __do_compat_sys_x32_rt_sigreturn+0x250/0x250 [ 295.350343][ C0] ? set_current_blocked+0x40/0x40 [ 295.355482][ C0] ? lockdep_hardirqs_on_prepare+0x438/0x7a0 [ 295.361460][ C0] __do_sys_rt_sigreturn+0x190/0x250 [ 295.366745][ C0] ? x32_copy_siginfo_to_user+0x270/0x270 [ 295.372461][ C0] ? syscall_enter_from_user_mode+0x2e/0x240 [ 295.378439][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 295.383635][ C0] ? syscall_enter_from_user_mode+0x2e/0x240 [ 295.389615][ C0] do_syscall_64+0x3b/0xb0 [ 295.394027][ C0] ? clear_bhb_loop+0x15/0x70 [ 295.398701][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 295.404590][ C0] RIP: 0033:0x7ffae3706e79 [ 295.409012][ 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 [ 295.428609][ C0] RSP: 002b:00007ffc919e8658 EFLAGS: 00000246 [ 295.434671][ C0] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007ffae3706e79 [ 295.442638][ C0] RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000 [ 295.450603][ C0] RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000 [ 295.458568][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000555557355370 [ 295.466535][ C0] R13: 0000000000000001 R14: 00007ffc919e86d0 R15: 00007ffc919e86c0 [ 295.474511][ C0]