Warning: Permanently added '10.128.1.52' (ED25519) to the list of known hosts. executing program [ 103.399221][ C1] sched: RT throttling activated [ 103.414726][ T0] NOHZ tick-stop error: local softirq work is pending, handler #200!!! executing program executing program [ 210.429176][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 210.436156][ C0] rcu: (detected by 0, t=10502 jiffies, g=8477, q=75 ncpus=2) [ 210.443695][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294958125-4294947623), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 210.457080][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g8477 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 210.468179][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 210.478233][ C0] rcu: RCU grace-period kthread stack dump: [ 210.484127][ C0] task:rcu_preempt state:R running task stack:27496 pid:17 ppid:2 flags:0x00004000 [ 210.494915][ C0] Call Trace: [ 210.498287][ C0] [ 210.501216][ C0] __schedule+0x14e2/0x4580 [ 210.505762][ C0] ? _raw_spin_unlock_irqrestore+0x40/0x110 [ 210.511713][ C0] ? _raw_spin_unlock_irqrestore+0xae/0x110 [ 210.517602][ C0] ? asan.module_dtor+0x20/0x20 [ 210.522459][ C0] ? enqueue_timer+0x225/0x530 [ 210.527222][ C0] ? __mod_timer+0x984/0xdb0 [ 210.531906][ C0] schedule+0xbd/0x170 [ 210.535982][ C0] schedule_timeout+0x160/0x280 [ 210.540828][ C0] ? console_conditional_schedule+0x40/0x40 [ 210.546715][ C0] ? update_process_times+0x1b0/0x1b0 [ 210.552358][ C0] ? prepare_to_swait_event+0x339/0x360 [ 210.557902][ C0] rcu_gp_fqs_loop+0x302/0x1560 [ 210.562756][ C0] ? rcu_gp_init+0x110e/0x1510 [ 210.567518][ C0] ? rcu_gp_kthread+0x380/0x380 [ 210.572375][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x760 [ 210.578351][ C0] ? rcu_gp_init+0x1510/0x1510 [ 210.583110][ C0] ? rcu_gp_cleanup+0xb4c/0xca0 [ 210.587972][ C0] ? _raw_spin_unlock_irq+0x23/0x50 [ 210.593191][ C0] ? lockdep_hardirqs_on+0x98/0x150 [ 210.598390][ C0] rcu_gp_kthread+0x99/0x380 [ 210.602989][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 210.608099][ C0] ? __kthread_parkme+0x7a/0x1c0 [ 210.613036][ C0] ? __kthread_parkme+0x162/0x1c0 [ 210.618065][ C0] kthread+0x2fa/0x390 [ 210.622126][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 210.627235][ C0] ? kthread_blkcg+0xd0/0xd0 [ 210.631916][ C0] ret_from_fork+0x48/0x80 [ 210.636378][ C0] ? kthread_blkcg+0xd0/0xd0 [ 210.640964][ C0] ret_from_fork_asm+0x11/0x20 [ 210.645742][ C0] [ 210.648752][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 210.655081][ C0] CPU: 0 PID: 5816 Comm: vhost-5815 Not tainted 6.6.97-syzkaller #0 [ 210.663050][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/19/2025 [ 210.673181][ C0] RIP: 0010:llist_reverse_order+0x41/0x70 [ 210.678898][ C0] Code: 42 45 31 e4 49 bf 00 00 00 00 00 fc ff df 4c 89 f3 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 72 b8 bf fd 4c 8b 33 <4c> 89 23 4d 85 f6 74 0a e8 82 09 67 fd 49 89 dc eb d2 e8 78 09 67 [ 210.698601][ C0] RSP: 0018:ffffc900046ffd60 EFLAGS: 00000246 [ 210.704678][ C0] RAX: 1ffff1100ec8a9ae RBX: ffff888076454d70 RCX: ffff888031c83c00 [ 210.712651][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888076454d70 [ 210.720644][ C0] RBP: ffffc900046fff20 R08: ffff88801d64d9a7 R09: 1ffff11003ac9b34 [ 210.728727][ C0] R10: dffffc0000000000 R11: ffffed1003ac9b35 R12: 0000000000000000 [ 210.736897][ C0] R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000 [ 210.744873][ C0] FS: 0000555580219380(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 [ 210.753805][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 210.760393][ C0] CR2: 00007fd622b1f1f0 CR3: 0000000075925000 CR4: 00000000003506f0 [ 210.768452][ C0] Call Trace: [ 210.771732][ C0] [ 210.774661][ C0] ? vhost_run_work_list+0x4b/0x1b0 [ 210.779861][ C0] vhost_run_work_list+0x9b/0x1b0 [ 210.784882][ C0] ? __vhost_worker_flush+0x240/0x240 [ 210.790249][ C0] vhost_task_fn+0x25a/0x3c0 [ 210.794828][ C0] ? vhost_task_create+0x280/0x280 [ 210.799933][ C0] ? vhost_task_create+0x280/0x280 [ 210.805047][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x760 [ 210.811022][ C0] ? lock_chain_count+0x20/0x20 [ 210.815891][ C0] ? _raw_spin_unlock_irq+0x23/0x50 [ 210.821082][ C0] ? lockdep_hardirqs_on+0x98/0x150 [ 210.826275][ C0] ? vhost_task_create+0x280/0x280 [ 210.831377][ C0] ret_from_fork+0x48/0x80 [ 210.835806][ C0] ? vhost_task_create+0x280/0x280 [ 210.840928][ C0] ret_from_fork_asm+0x11/0x20 [ 210.845702][ C0]