Warning: Permanently added '10.128.1.24' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program executing program [ 297.421585][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 297.428563][ C0] (detected by 0, t=10502 jiffies, g=3593, q=1) [ 297.434978][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294966882-4294956380), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 297.448338][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g3593 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 297.459444][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 297.469415][ C0] rcu: RCU grace-period kthread stack dump: [ 297.475309][ C0] task:rcu_preempt state:R running task stack:27000 pid: 15 ppid: 2 flags:0x00004000 [ 297.486097][ C0] Call Trace: [ 297.489376][ C0] [ 297.492306][ C0] __schedule+0x12c4/0x4590 [ 297.496928][ C0] ? _raw_spin_unlock_irqrestore+0x8b/0x130 [ 297.502862][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 297.508766][ C0] ? __mod_timer+0xa8e/0xeb0 [ 297.513438][ C0] ? __sched_text_start+0x8/0x8 [ 297.518309][ C0] ? mod_timer_pending+0x20/0x20 [ 297.523267][ C0] ? lockdep_softirqs_off+0x420/0x420 [ 297.528718][ C0] schedule+0x11b/0x1f0 [ 297.532890][ C0] schedule_timeout+0x1b9/0x300 [ 297.537749][ C0] ? console_conditional_schedule+0x40/0x40 [ 297.543659][ C0] ? update_process_times+0x200/0x200 [ 297.549048][ C0] ? prepare_to_swait_event+0x321/0x340 [ 297.554666][ C0] rcu_gp_fqs_loop+0x2af/0xf70 [ 297.559463][ C0] ? do_raw_spin_unlock+0x137/0x8b0 [ 297.564677][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 297.569905][ C0] ? rcu_gp_init+0xda4/0x1130 [ 297.574586][ C0] ? rcu_gp_init+0x1130/0x1130 [ 297.579447][ C0] ? finish_swait+0xc5/0x1d0 [ 297.584044][ C0] rcu_gp_kthread+0xa4/0x360 [ 297.588652][ C0] ? _raw_spin_unlock+0x40/0x40 [ 297.593504][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 297.598614][ C0] ? _raw_spin_unlock_irqrestore+0xd9/0x130 [ 297.604510][ C0] ? __kthread_parkme+0x15c/0x1c0 [ 297.609586][ C0] kthread+0x3f6/0x4f0 [ 297.613652][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 297.618761][ C0] ? kthread_blkcg+0xd0/0xd0 [ 297.623352][ C0] ret_from_fork+0x1f/0x30 [ 297.627797][ C0] [ 297.630809][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 297.637215][ C0] NMI backtrace for cpu 0 [ 297.641576][ C0] CPU: 0 PID: 3524 Comm: syz-executor404 Not tainted 5.15.126-syzkaller #0 [ 297.650171][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 297.660228][ C0] Call Trace: [ 297.663507][ C0] [ 297.666346][ C0] dump_stack_lvl+0x1e3/0x2cb [ 297.671028][ C0] ? io_uring_drop_tctx_refs+0x19d/0x19d [ 297.676661][ C0] ? panic+0x84d/0x84d [ 297.680737][ C0] nmi_cpu_backtrace+0x46a/0x4a0 [ 297.685751][ C0] ? __wake_up_klogd+0xd5/0x100 [ 297.690602][ C0] ? nmi_trigger_cpumask_backtrace+0x2a0/0x2a0 [ 297.696754][ C0] ? _printk+0xd1/0x111 [ 297.700910][ C0] ? cpu_online+0x1f/0x40 [ 297.705239][ C0] ? panic+0x84d/0x84d [ 297.709308][ C0] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 297.715418][ C0] nmi_trigger_cpumask_backtrace+0x181/0x2a0 [ 297.721404][ C0] rcu_check_gp_kthread_starvation+0x1d2/0x240 [ 297.727560][ C0] print_other_cpu_stall+0x137a/0x14d0 [ 297.733031][ C0] ? rcu_stall_kick_kthreads+0x230/0x230 [ 297.738664][ C0] ? timekeeping_advance+0x7db/0xaa0 [ 297.743961][ C0] rcu_sched_clock_irq+0x94f/0x1770 [ 297.749163][ C0] ? rcutree_dead_cpu+0x20/0x20 [ 297.754016][ C0] ? hrtimer_run_queues+0x163/0x450 [ 297.759215][ C0] ? account_process_tick+0x232/0x3a0 [ 297.764637][ C0] update_process_times+0x196/0x200 [ 297.769834][ C0] tick_sched_timer+0x22d/0x3c0 [ 297.774719][ C0] ? tick_setup_sched_timer+0x2d0/0x2d0 [ 297.780262][ C0] __hrtimer_run_queues+0x55b/0xcf0 [ 297.785489][ C0] ? hrtimer_interrupt+0x980/0x980 [ 297.790621][ C0] ? ktime_get_update_offsets_now+0x407/0x420 [ 297.796700][ C0] hrtimer_interrupt+0x392/0x980 [ 297.801676][ C0] __sysvec_apic_timer_interrupt+0x139/0x470 [ 297.807690][ C0] sysvec_apic_timer_interrupt+0x8c/0xb0 [ 297.813332][ C0] [ 297.816262][ C0] [ 297.819187][ C0] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 297.825259][ C0] RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 [ 297.831763][ C0] Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 b2 d2 a3 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 d7 79 31 f7 65 8b 05 e8 b5 dc 75 85 c0 74 3f 48 c7 04 24 0e 36 [ 297.851559][ C0] RSP: 0018:ffffc90002d8f5a0 EFLAGS: 00000206 [ 297.857637][ C0] RAX: af23654a0a2c3000 RBX: 1ffff920005b1eb8 RCX: ffffffff8162eaf8 [ 297.865622][ C0] RDX: dffffc0000000000 RSI: ffffffff8a8b0c60 RDI: 0000000000000001 [ 297.873605][ C0] RBP: ffffc90002d8f630 R08: dffffc0000000000 R09: fffffbfff1f7ae36 [ 297.881578][ C0] R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 [ 297.889548][ C0] R13: 1ffff920005b1eb4 R14: ffffc90002d8f5c0 R15: 0000000000000246 [ 297.897531][ C0] ? mark_lock+0x98/0x340 [ 297.901874][ C0] ? _raw_spin_unlock+0x40/0x40 [ 297.906725][ C0] ? __wake_up_common+0x2a0/0x4e0 [ 297.911755][ C0] __wake_up_sync_key+0x121/0x1c0 [ 297.916784][ C0] ? __wake_up_locked_key_bookmark+0x20/0x20 [ 297.922766][ C0] ? __skb_try_recv_from_queue+0x770/0x770 [ 297.928671][ C0] ? consume_skb+0x103/0x140 [ 297.933274][ C0] __unix_dgram_recvmsg+0x5fe/0x1260 [ 297.938683][ C0] ? __lock_acquire+0x1295/0x1ff0 [ 297.943720][ C0] ? unix_unhash+0x10/0x10 [ 297.948507][ C0] ? unix_dgram_recvmsg+0xb9/0xe0 [ 297.953530][ C0] ? unix_dgram_sendmsg+0x2090/0x2090 [ 297.958903][ C0] ____sys_recvmsg+0x286/0x530 [ 297.963673][ C0] ? __sys_recvmsg_sock+0x40/0x40 [ 297.968723][ C0] ___sys_recvmsg+0x1ec/0x690 [ 297.973405][ C0] ? __sys_recvmsg+0x260/0x260 [ 297.978187][ C0] ? __might_sleep+0x2c/0xc0 [ 297.982780][ C0] ? __might_fault+0xb4/0x110 [ 297.987508][ C0] do_recvmmsg+0x36f/0x8f0 [ 297.991936][ C0] ? __sys_recvmmsg+0x270/0x270 [ 297.996794][ C0] ? __lock_acquire+0x1ff0/0x1ff0 [ 298.001836][ C0] __x64_sys_recvmmsg+0x195/0x240 [ 298.006862][ C0] ? do_recvmmsg+0x8f0/0x8f0 [ 298.011452][ C0] ? syscall_enter_from_user_mode+0x2e/0x230 [ 298.017479][ C0] ? lockdep_hardirqs_on+0x94/0x130 [ 298.022676][ C0] ? syscall_enter_from_user_mode+0x2e/0x230 [ 298.028661][ C0] do_syscall_64+0x3d/0xb0 [ 298.033083][ C0] entry_SYSCALL_64_after_hwframe+0x61/0xcb [ 298.038974][ C0] RIP: 0033:0x7f3bbaec95d9 [ 298.043391][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 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 [ 298.062995][ C0] RSP: 002b:00007f3bbae69228 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 298.071414][ C0] RAX: ffffffffffffffda RBX: 0000000000000039 RCX: 00007f3bbaec95d9 [ 298.079381][ C0] RDX: 00000000040002db RSI: 0000000020000740 RDI: 0000000000000003 [ 298.087348][ C0] RBP: 00007f3bbaf53338 R08: 0000000000000000 R09: 0000000000000000 [ 298.095315][ C0] R10: 0000000000000002 R11: 0000000000000246 R12: 00007f3bbaf53330 [ 298.103284][ C0] R13: 00007f3bbaf20074 R14: 00007ffeff248d20 R15: 00007ffeff248e08 [ 298.111276][ C0]