Warning: Permanently added '10.128.1.174' (ED25519) to the list of known hosts. Setting up swapspace version 1, size = 127995904 bytes [ 60.700672][ T4161] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k FS executing program executing program [ 165.954128][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 165.961235][ C1] (detected by 1, t=10502 jiffies, g=5425, q=20) [ 165.967684][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294953730-4294943227), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 165.981084][ C1] rcu: rcu_preempt kthread starved for 10504 jiffies! g5425 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 165.992227][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 166.002220][ C1] rcu: RCU grace-period kthread stack dump: [ 166.008128][ C1] task:rcu_preempt state:R running task stack:26816 pid: 15 ppid: 2 flags:0x00004000 [ 166.018961][ C1] Call Trace: [ 166.022263][ C1] [ 166.025215][ C1] __schedule+0x12c4/0x45b0 [ 166.029773][ C1] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 166.035698][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 166.041637][ C1] ? __mod_timer+0xa8e/0xeb0 [ 166.046266][ C1] ? release_firmware_map_entry+0x190/0x190 [ 166.052191][ C1] ? mod_timer_pending+0x20/0x20 [ 166.057157][ C1] ? lockdep_softirqs_off+0x420/0x420 [ 166.062566][ C1] schedule+0x11b/0x1f0 [ 166.066764][ C1] schedule_timeout+0x1b9/0x300 [ 166.071643][ C1] ? console_conditional_schedule+0x40/0x40 [ 166.077577][ C1] ? update_process_times+0x200/0x200 [ 166.083003][ C1] ? prepare_to_swait_event+0x321/0x340 [ 166.088582][ C1] rcu_gp_fqs_loop+0x2bf/0x1080 [ 166.093470][ C1] ? _raw_spin_unlock_irq+0x1f/0x40 [ 166.098695][ C1] ? lockdep_hardirqs_on+0x94/0x130 [ 166.103922][ C1] ? rcu_gp_init+0xdae/0x1140 [ 166.108629][ C1] ? rcu_gp_init+0x1140/0x1140 [ 166.113429][ C1] ? finish_swait+0xc5/0x1d0 [ 166.118048][ C1] rcu_gp_kthread+0xa4/0x360 [ 166.122671][ C1] ? _raw_spin_unlock+0x40/0x40 [ 166.127555][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 166.132692][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 166.138620][ C1] ? __kthread_parkme+0x15c/0x1c0 [ 166.143690][ C1] kthread+0x3f6/0x4f0 [ 166.147784][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 166.152918][ C1] ? kthread_blkcg+0xd0/0xd0 [ 166.157538][ C1] ret_from_fork+0x1f/0x30 [ 166.161991][ C1] [ 166.165027][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 166.171364][ C1] NMI backtrace for cpu 1 [ 166.175723][ C1] CPU: 1 PID: 4189 Comm: syz-executor413 Not tainted 5.15.178-syzkaller #0 [ 166.184328][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 166.194404][ C1] Call Trace: [ 166.197750][ C1] [ 166.200612][ C1] dump_stack_lvl+0x1e3/0x2d0 [ 166.205315][ C1] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 166.210976][ C1] ? panic+0x860/0x860 [ 166.215084][ C1] nmi_cpu_backtrace+0x46a/0x4a0 [ 166.220046][ C1] ? __wake_up_klogd+0xd5/0x100 [ 166.224924][ C1] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 166.231100][ C1] ? _printk+0xd1/0x120 [ 166.235285][ C1] ? cpu_online+0x1f/0x40 [ 166.239641][ C1] ? panic+0x860/0x860 [ 166.243739][ C1] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 166.249832][ C1] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 166.255848][ C1] rcu_check_gp_kthread_starvation+0x1d2/0x240 [ 166.262046][ C1] print_other_cpu_stall+0x137a/0x14d0 [ 166.267548][ C1] ? print_cpu_stall+0x600/0x600 [ 166.272513][ C1] ? ktime_get+0x7f/0x270 [ 166.276886][ C1] rcu_sched_clock_irq+0xa38/0x1150 [ 166.282114][ C1] ? rcutree_dead_cpu+0x20/0x20 [ 166.286987][ C1] ? do_raw_spin_unlock+0x137/0x8b0 [ 166.292213][ C1] ? hrtimer_run_queues+0x163/0x450 [ 166.297435][ C1] ? account_process_tick+0x232/0x3a0 [ 166.302845][ C1] update_process_times+0x196/0x200 [ 166.308076][ C1] tick_sched_timer+0x386/0x550 [ 166.312954][ C1] ? tick_setup_sched_timer+0x2d0/0x2d0 [ 166.318529][ C1] __hrtimer_run_queues+0x55b/0xcf0 [ 166.323769][ C1] ? hrtimer_interrupt+0x980/0x980 [ 166.328902][ C1] ? ktime_get_update_offsets_now+0x407/0x420 [ 166.335001][ C1] hrtimer_interrupt+0x392/0x980 [ 166.339986][ C1] __sysvec_apic_timer_interrupt+0x13b/0x4b0 [ 166.346003][ C1] sysvec_apic_timer_interrupt+0x9b/0xc0 [ 166.351665][ C1] [ 166.354616][ C1] [ 166.357564][ C1] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 166.363574][ C1] RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 [ 166.369411][ C1] Code: 31 61 f6 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 0e 05 1a f7 48 89 df e8 66 59 1b f7 e8 b1 15 3e f7 fb bf 01 00 00 00 66 9e 0e f7 65 8b 05 77 81 b9 75 85 c0 74 02 5b c3 e8 44 9e b7 [ 166.389044][ C1] RSP: 0018:ffffc90002f8fbc0 EFLAGS: 00000282 [ 166.395141][ C1] RAX: 6714e74581edf100 RBX: ffff888026418940 RCX: ffffffff96a92f03 [ 166.403131][ C1] RDX: dffffc0000000000 RSI: ffffffff8aab2b80 RDI: 0000000000000001 [ 166.411123][ C1] RBP: 0000000000000000 R08: ffffffff81870420 R09: ffffed1004c83129 [ 166.419117][ C1] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000021 [ 166.427112][ C1] R13: dffffc0000000000 R14: ffff888026418dd8 R15: ffff888026418940 [ 166.435109][ C1] ? trace_hardirqs_on+0x30/0x80 [ 166.440118][ C1] get_signal+0x13ee/0x14e0 [ 166.444666][ C1] arch_do_signal_or_restart+0xc3/0x1890 [ 166.450430][ C1] ? __do_compat_sys_x32_rt_sigreturn+0x250/0x250 [ 166.456880][ C1] ? __might_fault+0xb4/0x110 [ 166.461581][ C1] ? _copy_from_user+0x10f/0x170 [ 166.466540][ C1] ? restore_altstack+0x274/0x400 [ 166.471630][ C1] ? get_sigframe_size+0x10/0x10 [ 166.476602][ C1] ? __ia32_sys_sigaltstack+0x60/0x60 [ 166.482008][ C1] ? __do_sys_rt_sigreturn+0x19d/0x250 [ 166.487502][ C1] ? exit_to_user_mode_loop+0x39/0x130 [ 166.492993][ C1] exit_to_user_mode_loop+0x97/0x130 [ 166.498304][ C1] exit_to_user_mode_prepare+0xb1/0x140 [ 166.503877][ C1] syscall_exit_to_user_mode+0x5d/0x240 [ 166.509449][ C1] do_syscall_64+0x47/0xb0 [ 166.513887][ C1] ? clear_bhb_loop+0x15/0x70 [ 166.518585][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 166.524513][ C1] RIP: 0033:0x7f7d914d314a [ 166.528966][ C1] Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 73 69 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 d3 69 02 00 8b 44 24 [ 166.548595][ C1] RSP: 002b:00007ffd193b24b0 EFLAGS: 00000293 [ 166.554698][ C1] RAX: fffffffffffffff7 RBX: 0000000000000004 RCX: 00007f7d914d314a [ 166.562690][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 166.570677][ C1] RBP: 0000000000000000 R08: 00007f7d9148b990 R09: 00007f7d9148b990 [ 166.578670][ C1] R10: 0000000000000000 R11: 0000000000000293 R12: 00007f7d9152ae3c [ 166.586658][ C1] R13: 00007f7d9152414e R14: 00007ffd193b2500 R15: 0000000000000000 [ 166.594821][ C1]