Warning: Permanently added '10.128.0.209' (ED25519) to the list of known hosts. executing program [ 351.092768][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 351.099856][ C1] (detected by 1, t=10502 jiffies, g=4613, q=34) [ 351.106301][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294972241-4294961738), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 351.119767][ C1] rcu: rcu_preempt kthread starved for 10504 jiffies! g4613 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 351.130894][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 351.140891][ C1] rcu: RCU grace-period kthread stack dump: [ 351.146793][ C1] task:rcu_preempt state:R running task stack:27064 pid: 15 ppid: 2 flags:0x00004000 [ 351.157600][ C1] Call Trace: [ 351.160894][ C1] [ 351.163839][ C1] __schedule+0x12c4/0x45b0 [ 351.168392][ C1] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 351.174319][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 351.180249][ C1] ? __mod_timer+0xa8e/0xeb0 [ 351.184907][ C1] ? release_firmware_map_entry+0x190/0x190 [ 351.190835][ C1] ? mod_timer_pending+0x20/0x20 [ 351.195804][ C1] ? lockdep_softirqs_off+0x420/0x420 [ 351.201210][ C1] schedule+0x11b/0x1f0 [ 351.205421][ C1] schedule_timeout+0x1b9/0x300 [ 351.210303][ C1] ? console_conditional_schedule+0x40/0x40 [ 351.216221][ C1] ? update_process_times+0x200/0x200 [ 351.221640][ C1] ? prepare_to_swait_event+0x321/0x340 [ 351.227211][ C1] rcu_gp_fqs_loop+0x2bf/0x1080 [ 351.232098][ C1] ? _raw_spin_unlock_irq+0x1f/0x40 [ 351.237322][ C1] ? lockdep_hardirqs_on+0x94/0x130 [ 351.242545][ C1] ? rcu_gp_init+0xdae/0x1140 [ 351.247245][ C1] ? rcu_gp_init+0x1140/0x1140 [ 351.252041][ C1] ? finish_swait+0xc5/0x1d0 [ 351.256652][ C1] rcu_gp_kthread+0xa4/0x360 [ 351.261261][ C1] ? _raw_spin_unlock+0x40/0x40 [ 351.266144][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 351.271273][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 351.277216][ C1] ? __kthread_parkme+0x15c/0x1c0 [ 351.282442][ C1] kthread+0x3f6/0x4f0 [ 351.286532][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 351.291667][ C1] ? kthread_blkcg+0xd0/0xd0 [ 351.296280][ C1] ret_from_fork+0x1f/0x30 [ 351.300726][ C1] [ 351.303762][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 351.310109][ C1] NMI backtrace for cpu 1 [ 351.314454][ C1] CPU: 1 PID: 3618 Comm: syz-executor367 Not tainted 5.15.167-syzkaller #0 [ 351.323049][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 351.333120][ C1] Call Trace: [ 351.336412][ C1] [ 351.339266][ C1] dump_stack_lvl+0x1e3/0x2d0 [ 351.343967][ C1] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 351.349626][ C1] ? panic+0x860/0x860 [ 351.353730][ C1] nmi_cpu_backtrace+0x46a/0x4a0 [ 351.358697][ C1] ? __wake_up_klogd+0xd5/0x100 [ 351.363588][ C1] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 351.369760][ C1] ? _printk+0xd1/0x120 [ 351.373937][ C1] ? cpu_online+0x1f/0x40 [ 351.378289][ C1] ? panic+0x860/0x860 [ 351.382379][ C1] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 351.388467][ C1] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 351.394472][ C1] rcu_check_gp_kthread_starvation+0x1d2/0x240 [ 351.400657][ C1] print_other_cpu_stall+0x137a/0x14d0 [ 351.406151][ C1] ? print_cpu_stall+0x600/0x600 [ 351.411109][ C1] ? ktime_get+0x7f/0x270 [ 351.415475][ C1] rcu_sched_clock_irq+0xa38/0x1150 [ 351.420739][ C1] ? rcutree_dead_cpu+0x20/0x20 [ 351.425636][ C1] ? do_raw_spin_unlock+0x137/0x8b0 [ 351.430863][ C1] ? hrtimer_run_queues+0x163/0x450 [ 351.436172][ C1] ? account_process_tick+0x232/0x3a0 [ 351.441595][ C1] update_process_times+0x196/0x200 [ 351.446838][ C1] tick_sched_timer+0x386/0x550 [ 351.451711][ C1] ? tick_setup_sched_timer+0x2d0/0x2d0 [ 351.457280][ C1] __hrtimer_run_queues+0x55b/0xcf0 [ 351.462515][ C1] ? hrtimer_interrupt+0x980/0x980 [ 351.467655][ C1] ? ktime_get_update_offsets_now+0x407/0x420 [ 351.473750][ C1] hrtimer_interrupt+0x392/0x980 [ 351.478731][ C1] __sysvec_apic_timer_interrupt+0x139/0x470 [ 351.484738][ C1] sysvec_apic_timer_interrupt+0x8c/0xb0 [ 351.490397][ C1] [ 351.493336][ C1] [ 351.496322][ C1] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 351.502330][ C1] RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 [ 351.508169][ C1] Code: 51 67 f6 ff 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 4e ed 24 f7 48 89 df e8 26 41 26 f7 e8 f1 f4 48 f7 fb bf 01 00 00 00 06 87 19 f7 65 8b 05 87 89 c4 75 85 c0 74 02 5b c3 e8 54 a6 c2 [ 351.527792][ C1] RSP: 0018:ffffc90002ec7bc0 EFLAGS: 00000282 [ 351.533885][ C1] RAX: 5d02018e11353300 RBX: ffff888026a9ef00 RCX: ffffffff96868f03 [ 351.541872][ C1] RDX: dffffc0000000000 RSI: ffffffff8a8b2b00 RDI: 0000000000000001 [ 351.549856][ C1] RBP: 0000000000000000 R08: ffffffff8186db50 R09: ffffed1004d53de1 [ 351.557839][ C1] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000021 [ 351.565826][ C1] R13: dffffc0000000000 R14: ffff888026a9f398 R15: ffff888026a9ef00 [ 351.574263][ C1] ? trace_hardirqs_on+0x30/0x80 [ 351.579232][ C1] get_signal+0x13ee/0x14e0 [ 351.583778][ C1] arch_do_signal_or_restart+0xc3/0x1890 [ 351.589434][ C1] ? __do_compat_sys_x32_rt_sigreturn+0x250/0x250 [ 351.595875][ C1] ? __might_fault+0xb4/0x110 [ 351.600583][ C1] ? _copy_from_user+0x10f/0x170 [ 351.605544][ C1] ? restore_altstack+0x274/0x400 [ 351.610590][ C1] ? get_sigframe_size+0x10/0x10 [ 351.615545][ C1] ? __ia32_sys_sigaltstack+0x60/0x60 [ 351.620950][ C1] ? __do_sys_rt_sigreturn+0x19d/0x250 [ 351.626428][ C1] ? exit_to_user_mode_loop+0x39/0x130 [ 351.631905][ C1] exit_to_user_mode_loop+0x97/0x130 [ 351.637644][ C1] exit_to_user_mode_prepare+0xb1/0x140 [ 351.643209][ C1] syscall_exit_to_user_mode+0x5d/0x240 [ 351.648782][ C1] do_syscall_64+0x47/0xb0 [ 351.653210][ C1] ? clear_bhb_loop+0x15/0x70 [ 351.657909][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 351.663820][ C1] RIP: 0033:0x7f56723d446a [ 351.668257][ 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 33 66 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 93 66 02 00 8b 44 24 [ 351.688510][ C1] RSP: 002b:00007fff167020b0 EFLAGS: 00000293 [ 351.694611][ C1] RAX: fffffffffffffff7 RBX: 0000000000000004 RCX: 00007f56723d446a [ 351.702600][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 351.710588][ C1] RBP: 0000000000000000 R08: 00007f567238d990 R09: 00007f567238d990 [ 351.718573][ C1] R10: 0000000000000000 R11: 0000000000000293 R12: 00007f567242bf9c [ 351.726571][ C1] R13: 00007f5672425199 R14: 00007fff16702100 R15: 0000000000000000 [ 351.734581][ C1]