Warning: Permanently added '10.128.0.185' (ED25519) to the list of known hosts.
Setting up swapspace version 1, size = 127995904 bytes
syzkaller login: [ 67.640409][ T5781] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k
executing program
executing program
[ 68.822490][ C1] sched: RT throttling activated
executing program
executing program
[ 91.702723][ T0] NOHZ tick-stop error: local softirq work is pending, handler #08!!!
[ 137.062703][ T0] NOHZ tick-stop error: local softirq work is pending, handler #08!!!
[ 174.872455][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 174.879439][ C1] rcu: (detected by 1, t=10502 jiffies, g=6757, q=54 ncpus=2)
[ 174.886989][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294954590-4294944088), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 174.900362][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g6757 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
[ 174.911470][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
[ 174.921443][ C1] rcu: RCU grace-period kthread stack dump:
[ 174.927327][ C1] task:rcu_preempt state:R running task stack:27496 pid:17 ppid:2 flags:0x00004000
[ 174.938149][ C1] Call Trace:
[ 174.941429][ C1]
[ 174.944372][ C1] __schedule+0x14e2/0x4580
[ 174.948928][ C1] ? _raw_spin_unlock_irqrestore+0x41/0x110
[ 174.954837][ C1] ? _raw_spin_unlock_irqrestore+0xae/0x110
[ 174.960742][ C1] ? asan.module_dtor+0x20/0x20
[ 174.965610][ C1] ? enqueue_timer+0x225/0x530
[ 174.970383][ C1] ? __mod_timer+0x984/0xdb0
[ 174.974988][ C1] schedule+0xbd/0x170
[ 174.979071][ C1] schedule_timeout+0x160/0x280
[ 174.983930][ C1] ? console_conditional_schedule+0x40/0x40
[ 174.989835][ C1] ? update_process_times+0x1b0/0x1b0
[ 174.995222][ C1] ? prepare_to_swait_event+0x339/0x360
[ 175.000780][ C1] rcu_gp_fqs_loop+0x302/0x1560
[ 175.005633][ C1] ? rcu_gp_init+0x110e/0x1510
[ 175.010405][ C1] ? rcu_gp_kthread+0x380/0x380
[ 175.015267][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x760
[ 175.021254][ C1] ? rcu_gp_init+0x1510/0x1510
[ 175.026016][ C1] ? rcu_gp_cleanup+0xb4c/0xca0
[ 175.030876][ C1] ? _raw_spin_unlock_irq+0x23/0x50
[ 175.036080][ C1] ? lockdep_hardirqs_on+0x98/0x150
[ 175.041291][ C1] rcu_gp_kthread+0x99/0x380
[ 175.045897][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0
[ 175.051019][ C1] ? __kthread_parkme+0x7a/0x1c0
[ 175.055965][ C1] ? __kthread_parkme+0x162/0x1c0
[ 175.061002][ C1] kthread+0x2fa/0x390
[ 175.065070][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0
[ 175.070194][ C1] ? kthread_blkcg+0xd0/0xd0
[ 175.074786][ C1] ret_from_fork+0x48/0x80
[ 175.079203][ C1] ? kthread_blkcg+0xd0/0xd0
[ 175.083794][ C1] ret_from_fork_asm+0x11/0x20
[ 175.088578][ C1]
[ 175.091610][ C1] rcu: Stack dump where RCU GP kthread last ran:
[ 175.097943][ C1] Sending NMI from CPU 1 to CPUs 0:
[ 175.103181][ C0] NMI backtrace for cpu 0
[ 175.103200][ C0] CPU: 0 PID: 5802 Comm: vhost-5800 Not tainted 6.6.97-syzkaller #0
[ 175.103214][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
[ 175.103221][ C0] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x36/0x90
[ 175.103245][ C0] Code: d0 1f 7e 7e 65 8b 0d d1 1f 7e 7e 81 e1 00 01 ff 00 74 11 81 f9 00 01 00 00 75 5b 83 ba 1c 16 00 00 00 74 52 8b 8a f8 15 00 00 <83> f9 03 75 47 48 8b 8a 00 16 00 00 44 8b 8a fc 15 00 00 49 c1 e1
[ 175.103256][ C0] RSP: 0018:ffffc9000468fb60 EFLAGS: 00000246
[ 175.103269][ C0] RAX: ffffffff87f68aee RBX: 0000000000000000 RCX: 0000000000000000
[ 175.103278][ C0] RDX: ffff88807b28da00 RSI: 0000000000000000 RDI: 0000000000000000
[ 175.103286][ C0] RBP: 0000000000000000 R08: ffffffff90da65ef R09: 1ffffffff21b4cbd
[ 175.103296][ C0] R10: dffffc0000000000 R11: fffffbfff21b4cbe R12: dffffc0000000000
[ 175.103306][ C0] R13: ffff88801eb84c08 R14: ffff88801eb84bf8 R15: ffffc9000468fb68
[ 175.103316][ C0] FS: 00005555845b4480(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
[ 175.103328][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 175.103337][ C0] CR2: 00007fd27fa43210 CR3: 000000002c938000 CR4: 00000000003506f0
[ 175.103349][ C0] Call Trace:
[ 175.103355][ C0]
[ 175.103359][ C0] vhost_enable_notify+0x3ae/0x810
[ 175.103379][ C0] vhost_vsock_handle_tx_kick+0x2cd/0xde0
[ 175.103408][ C0] ? vhost_vsock_dev_release+0x3f0/0x3f0
[ 175.103426][ C0] ? __rwlock_init+0x150/0x150
[ 175.103445][ C0] ? lockdep_hardirqs_on+0x98/0x150
[ 175.103463][ C0] vhost_run_work_list+0x13d/0x1b0
[ 175.103479][ C0] ? __vhost_worker_flush+0x240/0x240
[ 175.103495][ C0] vhost_task_fn+0x25a/0x3c0
[ 175.103507][ C0] ? vhost_task_create+0x280/0x280
[ 175.103524][ C0] ? vhost_task_create+0x280/0x280
[ 175.103537][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x760
[ 175.103553][ C0] ? lock_chain_count+0x20/0x20
[ 175.103569][ C0] ? _raw_spin_unlock_irq+0x23/0x50
[ 175.103584][ C0] ? lockdep_hardirqs_on+0x98/0x150
[ 175.103597][ C0] ? vhost_task_create+0x280/0x280
[ 175.103610][ C0] ret_from_fork+0x48/0x80
[ 175.103625][ C0] ? vhost_task_create+0x280/0x280
[ 175.103638][ C0] ret_from_fork_asm+0x11/0x20
[ 175.103662][ C0]