Warning: Permanently added '10.128.1.68' (ED25519) to the list of known hosts. [ 303.129433][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 303.136461][ C1] (detected by 1, t=10502 jiffies, g=3665, q=31) [ 303.142882][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10500 (4294967439-4294956939), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 303.156248][ C1] rcu: rcu_preempt kthread starved for 10500 jiffies! g3665 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 303.167361][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 303.177331][ C1] rcu: RCU grace-period kthread stack dump: [ 303.183215][ C1] task:rcu_preempt state:R running task stack:26712 pid: 15 ppid: 2 flags:0x00004000 [ 303.194007][ C1] Call Trace: [ 303.197285][ C1] [ 303.200225][ C1] __schedule+0x12c4/0x45b0 [ 303.204930][ C1] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 303.210858][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 303.216768][ C1] ? __mod_timer+0xa8e/0xeb0 [ 303.221442][ C1] ? release_firmware_map_entry+0x190/0x190 [ 303.227342][ C1] ? mod_timer_pending+0x20/0x20 [ 303.232289][ C1] ? lockdep_softirqs_off+0x420/0x420 [ 303.237695][ C1] schedule+0x11b/0x1f0 [ 303.241949][ C1] schedule_timeout+0x1b9/0x300 [ 303.246803][ C1] ? console_conditional_schedule+0x40/0x40 [ 303.252702][ C1] ? update_process_times+0x200/0x200 [ 303.258171][ C1] ? prepare_to_swait_event+0x321/0x340 [ 303.263796][ C1] rcu_gp_fqs_loop+0x2bf/0x1080 [ 303.268707][ C1] ? dump_blkd_tasks+0x810/0x810 [ 303.273654][ C1] ? rcu_gp_init+0x1140/0x1140 [ 303.278423][ C1] ? finish_swait+0xc5/0x1d0 [ 303.283019][ C1] rcu_gp_kthread+0xa4/0x360 [ 303.287619][ C1] ? _raw_spin_unlock+0x40/0x40 [ 303.292477][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 303.297604][ C1] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 303.303507][ C1] ? __kthread_parkme+0x15c/0x1c0 [ 303.308595][ C1] kthread+0x3f6/0x4f0 [ 303.312698][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 303.317813][ C1] ? kthread_blkcg+0xd0/0xd0 [ 303.322408][ C1] ret_from_fork+0x1f/0x30 [ 303.326859][ C1] [ 303.329878][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 303.336190][ C1] NMI backtrace for cpu 1 [ 303.340509][ C1] CPU: 1 PID: 3542 Comm: syz-executor419 Not tainted 5.15.158-syzkaller #0 [ 303.349091][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 [ 303.359142][ C1] Call Trace: [ 303.362422][ C1] [ 303.365261][ C1] dump_stack_lvl+0x1e3/0x2d0 [ 303.369991][ C1] ? io_uring_drop_tctx_refs+0x1a0/0x1a0 [ 303.375623][ C1] ? panic+0x860/0x860 [ 303.379749][ C1] nmi_cpu_backtrace+0x46a/0x4a0 [ 303.384752][ C1] ? __wake_up_klogd+0xd5/0x100 [ 303.389621][ C1] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 303.395773][ C1] ? _printk+0xd1/0x120 [ 303.399933][ C1] ? cpu_online+0x1f/0x40 [ 303.404269][ C1] ? panic+0x860/0x860 [ 303.408351][ C1] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 303.414472][ C1] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 303.420461][ C1] rcu_check_gp_kthread_starvation+0x1d2/0x240 [ 303.426620][ C1] print_other_cpu_stall+0x137a/0x14d0 [ 303.432224][ C1] ? print_cpu_stall+0x600/0x600 [ 303.437184][ C1] ? __lock_acquire+0x1ff0/0x1ff0 [ 303.442223][ C1] ? do_raw_spin_unlock+0x137/0x8b0 [ 303.447547][ C1] rcu_sched_clock_irq+0xa38/0x1150 [ 303.452769][ C1] ? rcutree_dead_cpu+0x20/0x20 [ 303.457651][ C1] ? hrtimer_run_queues+0x163/0x450 [ 303.462869][ C1] ? account_process_tick+0x232/0x3a0 [ 303.468346][ C1] update_process_times+0x196/0x200 [ 303.473552][ C1] tick_sched_timer+0x386/0x550 [ 303.478452][ C1] ? tick_setup_sched_timer+0x2d0/0x2d0 [ 303.483999][ C1] __hrtimer_run_queues+0x55b/0xcf0 [ 303.489215][ C1] ? hrtimer_interrupt+0x980/0x980 [ 303.494325][ C1] ? ktime_get_update_offsets_now+0x407/0x420 [ 303.500399][ C1] hrtimer_interrupt+0x392/0x980 [ 303.505359][ C1] __sysvec_apic_timer_interrupt+0x139/0x470 [ 303.511392][ C1] sysvec_apic_timer_interrupt+0x8c/0xb0 [ 303.517032][ C1] [ 303.519966][ C1] [ 303.522892][ C1] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 303.528876][ C1] RIP: 0010:__local_bh_disable_ip+0x15f/0x210 [ 303.535007][ C1] Code: 24 40 42 80 3c 23 00 74 05 e8 ed b7 7c 00 f6 44 24 41 02 0f 85 a5 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 65 8b 05 b9 f2 b4 7e <25> ff ff ff 7f 44 39 f8 75 42 4c 8b 75 08 4c 89 f7 e8 db 7a 16 00 [ 303.554611][ C1] RSP: 0018:ffffc90002e07b80 EFLAGS: 00000206 [ 303.560693][ C1] RAX: 0000000080000200 RBX: 1ffff920005c0f78 RCX: ffffffff913eef03 [ 303.568675][ C1] RDX: 0000000000000000 RSI: 0000000000000200 RDI: ffffc90002e07bc0 [ 303.576653][ C1] RBP: ffffc90002e07c58 R08: ffffffff815079b4 R09: fffffbfff1bc8c56 [ 303.584636][ C1] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 303.592624][ C1] R13: 1ffff920005c0f74 R14: 0000000000000246 R15: 0000000000000200 [ 303.600615][ C1] ? copy_siginfo_to_user+0x64/0x80 [ 303.605956][ C1] ? __lock_acquire+0x1ff0/0x1ff0 [ 303.610987][ C1] ? local_bh_disable+0x5/0x20 [ 303.615801][ C1] ? __bpf_trace_softirq+0x10/0x10 [ 303.620916][ C1] ? __might_fault+0xb4/0x110 [ 303.625642][ C1] fpu__clear_user_states+0x34/0x260 [ 303.630933][ C1] arch_do_signal_or_restart+0x1488/0x1890 [ 303.636814][ C1] ? get_sigframe_size+0x10/0x10 [ 303.641754][ C1] ? __ia32_sys_sigaltstack+0x60/0x60 [ 303.647142][ C1] ? __do_sys_rt_sigreturn+0x19d/0x250 [ 303.652602][ C1] ? exit_to_user_mode_loop+0x39/0x130 [ 303.658062][ C1] exit_to_user_mode_loop+0x97/0x130 [ 303.663354][ C1] exit_to_user_mode_prepare+0xb1/0x140 [ 303.668900][ C1] syscall_exit_to_user_mode+0x5d/0x240 [ 303.674451][ C1] do_syscall_64+0x47/0xb0 [ 303.678863][ C1] ? clear_bhb_loop+0x15/0x70 [ 303.683545][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 303.689441][ C1] RIP: 0033:0x7fe629332e40 [ 303.693858][ C1] Code: 83 c0 16 83 e0 f7 74 12 50 48 8d 3d 8a 27 03 00 e8 05 0d fb ff 0f 1f 44 00 00 c3 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 <83> ff 21 74 0b c3 66 2e 0f 1f 84 00 00 00 00 00 55 53 48 89 f3 48 [ 303.713461][ C1] RSP: 002b:00007ffc991fdd78 EFLAGS: 00000246 [ 303.719541][ C1] RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007fe62930ce79 [ 303.727555][ C1] RDX: 00007ffc991fdd80 RSI: 00007ffc991fdeb0 RDI: 0000000000000021 [ 303.735522][ C1] RBP: 00000000000f4240 R08: 0000000000000000 R09: 0000000000000000 [ 303.743492][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 303.751461][ C1] R13: 0000000000000000 R14: 00007ffc991fe390 R15: 00007ffc991fe380 [ 303.759445][ C1]