Warning: Permanently added '10.128.0.194' (ED25519) to the list of known hosts. executing program executing program [ 180.770374][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 180.777476][ C0] (detected by 0, t=10502 jiffies, g=5225, q=46) [ 180.783902][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294955210-4294944708), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 180.797273][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g5225 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 180.808386][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 180.818371][ C0] rcu: RCU grace-period kthread stack dump: [ 180.824266][ C0] task:rcu_preempt state:R running task stack:27064 pid: 15 ppid: 2 flags:0x00004000 [ 180.835074][ C0] Call Trace: [ 180.838360][ C0] [ 180.841318][ C0] __schedule+0x12c4/0x45b0 [ 180.845868][ C0] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 180.851778][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 180.857696][ C0] ? __mod_timer+0xa8e/0xeb0 [ 180.862307][ C0] ? release_firmware_map_entry+0x190/0x190 [ 180.868213][ C0] ? mod_timer_pending+0x20/0x20 [ 180.873174][ C0] ? lockdep_softirqs_off+0x420/0x420 [ 180.878649][ C0] schedule+0x11b/0x1f0 [ 180.882819][ C0] schedule_timeout+0x1b9/0x300 [ 180.887681][ C0] ? console_conditional_schedule+0x40/0x40 [ 180.893589][ C0] ? update_process_times+0x200/0x200 [ 180.898982][ C0] ? prepare_to_swait_event+0x321/0x340 [ 180.904546][ C0] rcu_gp_fqs_loop+0x2bf/0x1080 [ 180.909416][ C0] ? _raw_spin_unlock_irq+0x1f/0x40 [ 180.914629][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 180.919844][ C0] ? rcu_gp_init+0xdae/0x1140 [ 180.924534][ C0] ? rcu_gp_init+0x1140/0x1140 [ 180.929314][ C0] ? finish_swait+0xc5/0x1d0 [ 180.933924][ C0] rcu_gp_kthread+0xa4/0x360 [ 180.938529][ C0] ? _raw_spin_unlock+0x40/0x40 [ 180.943481][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 180.948601][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 180.954513][ C0] ? __kthread_parkme+0x15c/0x1c0 [ 180.959552][ C0] kthread+0x3f6/0x4f0 [ 180.963633][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 180.968753][ C0] ? kthread_blkcg+0xd0/0xd0 [ 180.973357][ C0] ret_from_fork+0x1f/0x30 [ 180.977835][ C0] [ 180.980859][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 180.987192][ C0] NMI backtrace for cpu 0 [ 180.991549][ C0] CPU: 0 PID: 4192 Comm: syz-executor160 Not tainted 5.15.175-syzkaller #0 [ 181.000146][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 181.010210][ C0] Call Trace: [ 181.013497][ C0] [ 181.016348][ C0] dump_stack_lvl+0x1e3/0x2d0 [ 181.021050][ C0] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 181.026705][ C0] ? panic+0x860/0x860 [ 181.030798][ C0] nmi_cpu_backtrace+0x46a/0x4a0 [ 181.035746][ C0] ? __wake_up_klogd+0xd5/0x100 [ 181.040612][ C0] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 181.046778][ C0] ? _printk+0xd1/0x120 [ 181.050970][ C0] ? cpu_online+0x1f/0x40 [ 181.055312][ C0] ? panic+0x860/0x860 [ 181.059401][ C0] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 181.065478][ C0] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 181.071483][ C0] rcu_check_gp_kthread_starvation+0x1d2/0x240 [ 181.077655][ C0] print_other_cpu_stall+0x137a/0x14d0 [ 181.083142][ C0] ? print_cpu_stall+0x600/0x600 [ 181.088101][ C0] ? do_raw_spin_unlock+0x137/0x8b0 [ 181.093314][ C0] rcu_sched_clock_irq+0xa38/0x1150 [ 181.098531][ C0] ? rcutree_dead_cpu+0x20/0x20 [ 181.103591][ C0] ? hrtimer_run_queues+0x163/0x450 [ 181.108803][ C0] ? account_process_tick+0x232/0x3a0 [ 181.114193][ C0] update_process_times+0x196/0x200 [ 181.119407][ C0] tick_sched_timer+0x386/0x550 [ 181.124273][ C0] ? tick_setup_sched_timer+0x2d0/0x2d0 [ 181.129836][ C0] __hrtimer_run_queues+0x55b/0xcf0 [ 181.135084][ C0] ? hrtimer_interrupt+0x980/0x980 [ 181.140213][ C0] ? ktime_get_update_offsets_now+0x407/0x420 [ 181.146297][ C0] hrtimer_interrupt+0x392/0x980 [ 181.151264][ C0] __sysvec_apic_timer_interrupt+0x13b/0x4b0 [ 181.157266][ C0] sysvec_apic_timer_interrupt+0x9b/0xc0 [ 181.162911][ C0] [ 181.165846][ C0] [ 181.168780][ C0] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 181.174777][ C0] RIP: 0010:lock_is_held_type+0x14b/0x180 [ 181.180507][ C0] Code: 00 75 46 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 75 3c 89 e8 48 83 c4 10 5b 41 5c 41 5d 41 5e <41> 5f 5d c3 0f 0b 48 c7 c7 80 2b ab 8a e8 23 11 00 00 65 c7 05 18 [ 181.200204][ C0] RSP: 0018:ffffc90002ebf868 EFLAGS: 00000286 [ 181.206282][ C0] RAX: 0000000000000000 RBX: ffff8880298b9dc0 RCX: ffff8880298b9dc0 [ 181.214264][ C0] RDX: 0000000000000000 RSI: ffffffff8aab3e20 RDI: ffffffff8af9f000 [ 181.222381][ C0] RBP: 0000000000000000 R08: ffffffff81b9e99c R09: ffffed10053173b9 [ 181.230361][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 [ 181.238345][ C0] R13: 0000000000000007 R14: dffffc0000000000 R15: ffffffff8cb1fd80 [ 181.246372][ C0] ? __might_fault+0x4c/0x110 [ 181.251078][ C0] ___might_sleep+0xa2/0x6a0 [ 181.255690][ C0] ? __might_sleep+0xc0/0xc0 [ 181.260287][ C0] ? __local_bh_enable_ip+0x164/0x1f0 [ 181.265670][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 181.270883][ C0] ? __local_bh_enable_ip+0x164/0x1f0 [ 181.276267][ C0] ? __bpf_trace_softirq+0x10/0x10 [ 181.281395][ C0] ? local_bh_enable+0x5/0x20 [ 181.286099][ C0] ? _local_bh_enable+0xa0/0xa0 [ 181.290969][ C0] __might_fault+0x6b/0x110 [ 181.295516][ C0] copy_fpstate_to_sigframe+0x858/0xb40 [ 181.301113][ C0] ? fpregs_set+0x700/0x700 [ 181.305627][ C0] ? __lock_acquire+0x1ff0/0x1ff0 [ 181.310661][ C0] ? rcu_is_watching+0x11/0xa0 [ 181.315435][ C0] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 181.321607][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 181.326823][ C0] ? rcu_is_watching+0x11/0xa0 [ 181.331595][ C0] ? fpu__alloc_mathframe+0x80/0x140 [ 181.336895][ C0] get_sigframe+0x378/0x4b0 [ 181.341421][ C0] ? restore_sigcontext+0x710/0x710 [ 181.346649][ C0] arch_do_signal_or_restart+0x4ac/0x1890 [ 181.352405][ C0] ? __do_compat_sys_x32_rt_sigreturn+0x250/0x250 [ 181.358838][ C0] ? __might_fault+0xb4/0x110 [ 181.363532][ C0] ? _copy_from_user+0x10f/0x170 [ 181.368490][ C0] ? get_sigframe_size+0x10/0x10 [ 181.373449][ C0] ? __ia32_sys_sigaltstack+0x60/0x60 [ 181.378852][ C0] ? __do_sys_rt_sigreturn+0x19d/0x250 [ 181.384328][ C0] ? exit_to_user_mode_loop+0x39/0x130 [ 181.389987][ C0] exit_to_user_mode_loop+0x97/0x130 [ 181.395305][ C0] exit_to_user_mode_prepare+0xb1/0x140 [ 181.400893][ C0] syscall_exit_to_user_mode+0x5d/0x240 [ 181.406471][ C0] do_syscall_64+0x47/0xb0 [ 181.410905][ C0] ? clear_bhb_loop+0x15/0x70 [ 181.415611][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 181.421637][ C0] RIP: 0033:0x7fb1997a0639 [ 181.426074][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 1a 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 [ 181.445702][ C0] RSP: 002b:00007ffcdb02c498 EFLAGS: 00000246 [ 181.451792][ C0] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fb1997a0639 [ 181.459775][ C0] RDX: 0000000020000500 RSI: 0000000000000000 RDI: 0000000000000000 [ 181.467757][ C0] RBP: 0000000000000000 R08: 00007fb19975f990 R09: 00007fb19975f990 [ 181.475743][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb1997fd33c [ 181.483726][ C0] R13: 00007fb1997f7106 R14: 00007ffcdb02c4d0 R15: 0000000000000000 [ 181.491741][ C0]