Warning: Permanently added '10.128.0.112' (ED25519) to the list of known hosts. executing program [ 294.331652][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 294.338683][ C0] (detected by 0, t=10502 jiffies, g=3577, q=17) [ 294.345198][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294966563-4294956061), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 294.358892][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g3577 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 294.370013][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 294.380085][ C0] rcu: RCU grace-period kthread stack dump: [ 294.385981][ C0] task:rcu_preempt state:R running task stack:27000 pid: 15 ppid: 2 flags:0x00004000 [ 294.396865][ C0] Call Trace: [ 294.400406][ C0] [ 294.403355][ C0] __schedule+0x12c4/0x45b0 [ 294.408205][ C0] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 294.414305][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 294.420233][ C0] ? __mod_timer+0xa8e/0xeb0 [ 294.424918][ C0] ? release_firmware_map_entry+0x190/0x190 [ 294.430934][ C0] ? mod_timer_pending+0x20/0x20 [ 294.435894][ C0] ? lockdep_softirqs_off+0x420/0x420 [ 294.441300][ C0] schedule+0x11b/0x1f0 [ 294.445469][ C0] schedule_timeout+0x1b9/0x300 [ 294.450341][ C0] ? console_conditional_schedule+0x40/0x40 [ 294.456271][ C0] ? update_process_times+0x200/0x200 [ 294.461656][ C0] ? prepare_to_swait_event+0x321/0x340 [ 294.467210][ C0] rcu_gp_fqs_loop+0x2bf/0x1080 [ 294.472133][ C0] ? _raw_spin_unlock_irq+0x1f/0x40 [ 294.477334][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 294.482854][ C0] ? rcu_gp_init+0xdae/0x1140 [ 294.487625][ C0] ? rcu_gp_init+0x1140/0x1140 [ 294.492402][ C0] ? finish_swait+0xc5/0x1d0 [ 294.497086][ C0] rcu_gp_kthread+0xa4/0x360 [ 294.501780][ C0] ? _raw_spin_unlock+0x40/0x40 [ 294.506657][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 294.511970][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 294.517878][ C0] ? __kthread_parkme+0x15c/0x1c0 [ 294.522978][ C0] kthread+0x3f6/0x4f0 [ 294.527067][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 294.532184][ C0] ? kthread_blkcg+0xd0/0xd0 [ 294.536875][ C0] ret_from_fork+0x1f/0x30 [ 294.541332][ C0] [ 294.544358][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 294.550700][ C0] NMI backtrace for cpu 0 [ 294.555027][ C0] CPU: 0 PID: 3544 Comm: syz-executor134 Not tainted 5.15.157-syzkaller #0 [ 294.563798][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 [ 294.573858][ C0] Call Trace: [ 294.577240][ C0] [ 294.580120][ C0] dump_stack_lvl+0x1e3/0x2d0 [ 294.584807][ C0] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 294.590440][ C0] ? panic+0x860/0x860 [ 294.594577][ C0] nmi_cpu_backtrace+0x46a/0x4a0 [ 294.599581][ C0] ? __wake_up_klogd+0xd5/0x100 [ 294.604468][ C0] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 294.610623][ C0] ? _printk+0xd1/0x120 [ 294.614788][ C0] ? cpu_online+0x1f/0x40 [ 294.619117][ C0] ? panic+0x860/0x860 [ 294.623193][ C0] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 294.629321][ C0] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 294.635340][ C0] rcu_check_gp_kthread_starvation+0x1d2/0x240 [ 294.641508][ C0] print_other_cpu_stall+0x137a/0x14d0 [ 294.646984][ C0] ? print_cpu_stall+0x600/0x600 [ 294.651936][ C0] ? __lock_acquire+0x1ff0/0x1ff0 [ 294.656971][ C0] ? do_raw_spin_unlock+0x137/0x8b0 [ 294.662180][ C0] rcu_sched_clock_irq+0xa38/0x1150 [ 294.667385][ C0] ? rcutree_dead_cpu+0x20/0x20 [ 294.672244][ C0] ? hrtimer_run_queues+0x163/0x450 [ 294.677448][ C0] ? account_process_tick+0x232/0x3a0 [ 294.682913][ C0] update_process_times+0x196/0x200 [ 294.688120][ C0] tick_sched_timer+0x386/0x550 [ 294.693025][ C0] ? tick_setup_sched_timer+0x2d0/0x2d0 [ 294.698578][ C0] __hrtimer_run_queues+0x55b/0xcf0 [ 294.703795][ C0] ? hrtimer_interrupt+0x980/0x980 [ 294.708915][ C0] ? ktime_get_update_offsets_now+0x407/0x420 [ 294.715078][ C0] hrtimer_interrupt+0x392/0x980 [ 294.720036][ C0] __sysvec_apic_timer_interrupt+0x139/0x470 [ 294.726066][ C0] sysvec_apic_timer_interrupt+0x8c/0xb0 [ 294.731740][ C0] [ 294.734683][ C0] [ 294.737618][ C0] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 294.743669][ C0] RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 [ 294.749601][ C0] Code: 51 80 f6 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 7e 84 3b f7 48 89 df e8 56 d8 3c f7 e8 71 8f 5f f7 fb bf 01 00 00 00 76 14 30 f7 65 8b 05 47 22 db 75 85 c0 74 02 5b c3 e8 b4 40 d9 [ 294.769590][ C0] RSP: 0018:ffffc90002cc7bc0 EFLAGS: 00000282 [ 294.775675][ C0] RAX: 2550da86f1bb2900 RBX: ffff8880241a6f00 RCX: ffffffff913eef03 [ 294.783736][ C0] RDX: dffffc0000000000 RSI: ffffffff8a8b2980 RDI: 0000000000000001 [ 294.791720][ C0] RBP: 0000000000000000 R08: ffffffff8186dd10 R09: ffffed1004834de1 [ 294.799706][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000021 [ 294.807777][ C0] R13: dffffc0000000000 R14: ffff8880241a7398 R15: ffff8880241a6f00 [ 294.815779][ C0] ? trace_hardirqs_on+0x30/0x80 [ 294.820800][ C0] get_signal+0x13ee/0x14e0 [ 294.825450][ C0] arch_do_signal_or_restart+0xc3/0x1890 [ 294.831498][ C0] ? __do_compat_sys_x32_rt_sigreturn+0x250/0x250 [ 294.838046][ C0] ? __might_fault+0xb4/0x110 [ 294.842896][ C0] ? _copy_from_user+0x10f/0x170 [ 294.847884][ C0] ? restore_altstack+0x274/0x400 [ 294.853741][ C0] ? get_sigframe_size+0x10/0x10 [ 294.858889][ C0] ? __ia32_sys_sigaltstack+0x60/0x60 [ 294.864370][ C0] ? __do_sys_rt_sigreturn+0x19d/0x250 [ 294.869836][ C0] ? exit_to_user_mode_loop+0x39/0x130 [ 294.875298][ C0] exit_to_user_mode_loop+0x97/0x130 [ 294.880760][ C0] exit_to_user_mode_prepare+0xb1/0x140 [ 294.886399][ C0] syscall_exit_to_user_mode+0x5d/0x240 [ 294.891957][ C0] do_syscall_64+0x47/0xb0 [ 294.896472][ C0] ? clear_bhb_loop+0x15/0x70 [ 294.901175][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 294.907186][ C0] RIP: 0033:0x7f35f9c5ae79 [ 294.911715][ 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 [ 294.931320][ C0] RSP: 002b:00007ffe3ab4eff8 EFLAGS: 00000246 [ 294.937405][ C0] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007f35f9c5ae79 [ 294.945463][ C0] RDX: 000000002006b000 RSI: 0000000000000000 RDI: 0000000000000000 [ 294.953432][ C0] RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000 [ 294.961401][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 000055555643a370 [ 294.969377][ C0] R13: 0000000000000002 R14: 00007ffe3ab4f070 R15: 00007ffe3ab4f060 [ 294.977364][ C0]