Warning: Permanently added '10.128.0.194' (ED25519) to the list of known hosts.
executing program
executing program
executing program
syzkaller login: [ 181.929099][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 181.936169][ C0] (detected by 0, t=10502 jiffies, g=7329, q=74 ncpus=2)
[ 181.943463][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294955299-4294944796), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 181.957070][ C0] rcu: rcu_preempt kthread starved for 10504 jiffies! g7329 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
[ 181.968204][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
[ 181.978196][ C0] rcu: RCU grace-period kthread stack dump:
[ 181.984133][ C0] task:rcu_preempt state:R running task stack:27760 pid:16 ppid:2 flags:0x00004000
[ 181.994948][ C0] Call Trace:
[ 181.998251][ C0]
[ 182.001212][ C0] __schedule+0x11d1/0x40e0
[ 182.005781][ C0] ? _raw_spin_unlock_irqrestore+0x82/0x120
[ 182.011792][ C0] ? _raw_spin_unlock_irqrestore+0xc1/0x120
[ 182.017725][ C0] ? __sched_text_start+0x8/0x8
[ 182.022612][ C0] ? __mod_timer+0x91e/0xd00
[ 182.027246][ C0] schedule+0xb9/0x180
[ 182.031355][ C0] schedule_timeout+0x184/0x2d0
[ 182.036380][ C0] ? console_conditional_schedule+0x40/0x40
[ 182.042297][ C0] ? lockdep_hardirqs_on_prepare+0x409/0x770
[ 182.048312][ C0] ? update_process_times+0x1b0/0x1b0
[ 182.053843][ C0] ? prepare_to_swait_event+0x335/0x350
[ 182.059524][ C0] rcu_gp_fqs_loop+0x303/0x1340
[ 182.064499][ C0] ? rcu_gp_kthread+0x3b0/0x3b0
[ 182.069381][ C0] ? lockdep_hardirqs_on_prepare+0x409/0x770
[ 182.075401][ C0] ? rcu_gp_init+0x14e0/0x14e0
[ 182.080187][ C0] ? rcu_gp_cleanup+0xb41/0xc90
[ 182.085067][ C0] ? _raw_spin_unlock_irq+0x1f/0x40
[ 182.090381][ C0] ? lockdep_hardirqs_on+0x94/0x140
[ 182.095613][ C0] rcu_gp_kthread+0x99/0x3b0
[ 182.100318][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0
[ 182.105562][ C0] ? _raw_spin_unlock_irqrestore+0xc1/0x120
[ 182.111526][ C0] ? __kthread_parkme+0x162/0x1c0
[ 182.116601][ C0] kthread+0x29d/0x330
[ 182.120696][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0
[ 182.125833][ C0] ? kthread_blkcg+0xd0/0xd0
[ 182.130542][ C0] ret_from_fork+0x1f/0x30
[ 182.135100][ C0]
[ 182.138140][ C0] rcu: Stack dump where RCU GP kthread last ran:
[ 182.144602][ C0] Sending NMI from CPU 0 to CPUs 1:
[ 182.149831][ C1] NMI backtrace for cpu 1
[ 182.149840][ C1] CPU: 1 PID: 4277 Comm: syz-executor360 Not tainted syzkaller #0
[ 182.149855][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
[ 182.149862][ C1] RIP: 0010:__lock_acquire+0x1458/0x7d10
[ 182.149886][ C1] Code: 00 00 00 42 80 3c 00 00 74 12 4c 89 e7 e8 20 2b 6f 00 49 b8 00 00 00 00 00 fc ff df 49 8b 1c 24 48 85 db 0f 94 c0 48 83 c3 f8 <0f> 94 c1 08 c1 4c 89 b4 24 90 00 00 00 0f 84 99 02 00 00 e8 c0 a5
[ 182.149898][ C1] RSP: 0018:ffffc900001e09c0 EFLAGS: 00000093
[ 182.149911][ C1] RAX: 1ffffffff20edf00 RBX: ffffffff90aface0 RCX: ffffffff816455ff
[ 182.149922][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff90af9248
[ 182.149932][ C1] RBP: ffffc900001e0c10 R08: dffffc0000000000 R09: 1ffffffff215f249
[ 182.149942][ C1] R10: dffffc0000000000 R11: fffffbfff215f24a R12: ffffffff9076fc48
[ 182.149952][ C1] R13: 00000000687715fc R14: e2a3ab267825be18 R15: ffff88803019e410
[ 182.149963][ C1] FS: 00007fb49fa4b6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
[ 182.149976][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 182.149986][ C1] CR2: 000020000006b000 CR3: 0000000077420000 CR4: 00000000003506e0
[ 182.150001][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 182.150009][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 182.150019][ C1] Call Trace:
[ 182.150026][ C1]
[ 182.150031][ C1] ? __lock_task_sighand+0x146/0x2d0
[ 182.150053][ C1] ? mark_lock+0x94/0x320
[ 182.150076][ C1] ? verify_lock_unused+0x140/0x140
[ 182.150099][ C1] ? verify_lock_unused+0x140/0x140
[ 182.150118][ C1] ? do_raw_spin_lock+0x128/0x2f0
[ 182.150133][ C1] lock_acquire+0x1bb/0x4a0
[ 182.150151][ C1] ? ktime_get_update_offsets_now+0x44/0x3e0
[ 182.150172][ C1] ? read_lock_is_recursive+0x10/0x10
[ 182.150193][ C1] ? ktime_get_update_offsets_now+0x44/0x3e0
[ 182.150211][ C1] seqcount_lockdep_reader_access+0xcd/0x1d0
[ 182.150228][ C1] ? ktime_get_update_offsets_now+0x44/0x3e0
[ 182.150245][ C1] ? ktime_get_real_ts64+0x440/0x440
[ 182.150266][ C1] ktime_get_update_offsets_now+0x44/0x3e0
[ 182.150283][ C1] ? kvm_sched_clock_read+0x14/0x40
[ 182.150300][ C1] hrtimer_interrupt+0x130/0x9c0
[ 182.150318][ C1] ? kvm_sched_clock_read+0x14/0x40
[ 182.150331][ C1] ? sched_clock_cpu+0x6e/0x260
[ 182.150347][ C1] ? irqtime_account_irq+0xb2/0x1b0
[ 182.150361][ C1] ? __sched_clock_gtod_offset+0xe0/0xe0
[ 182.150377][ C1] ? __irq_exit_rcu+0x147/0x230
[ 182.150391][ C1] ? irq_exit_rcu+0x20/0x20
[ 182.150406][ C1] __sysvec_apic_timer_interrupt+0x153/0x5a0
[ 182.150427][ C1] sysvec_apic_timer_interrupt+0x9b/0xc0
[ 182.150444][ C1]
[ 182.150448][ C1]
[ 182.150453][ C1] asm_sysvec_apic_timer_interrupt+0x16/0x20
[ 182.150472][ C1] RIP: 0010:_raw_spin_unlock_irq+0x25/0x40
[ 182.150489][ C1] Code: 00 00 00 66 90 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 0e b0 2c f7 48 89 df e8 56 78 2d f7 e8 21 cf 50 f7 fb bf 01 00 00 00 a6 dc 20 f7 65 8b 05 f7 5f ca 75 85 c0 74 02 5b c3 e8 44 74 c8
[ 182.150499][ C1] RSP: 0018:ffffc90003e47b98 EFLAGS: 00000282
[ 182.150511][ C1] RAX: 059ace86e0132000 RBX: ffff88802d8b65c0 RCX: 059ace86e0132000
[ 182.150521][ C1] RDX: dffffc0000000000 RSI: ffffffff8a8c1120 RDI: 0000000000000001
[ 182.150531][ C1] RBP: ffff88802d8b6a58 R08: ffff88802d8b65c3 R09: 1ffff11005b16cb8
[ 182.150541][ C1] R10: dffffc0000000000 R11: ffffed1005b16cb9 R12: 1ffff11005b16d4b
[ 182.150551][ C1] R13: 0000000000000021 R14: dffffc0000000000 R15: 0000000000000000
[ 182.150566][ C1] ? _raw_spin_unlock_irq+0x1f/0x40
[ 182.150589][ C1] get_signal+0x1163/0x1350
[ 182.150615][ C1] arch_do_signal_or_restart+0xc4/0x1350
[ 182.150636][ C1] ? __ia32_sys_rt_sigreturn+0x619/0x760
[ 182.150655][ C1] ? load_gs_index+0x130/0x130
[ 182.150671][ C1] ? get_sigframe_size+0x10/0x10
[ 182.150694][ C1] ? exit_to_user_mode_loop+0x3b/0x110
[ 182.150715][ C1] exit_to_user_mode_loop+0x70/0x110
[ 182.150735][ C1] exit_to_user_mode_prepare+0xee/0x180
[ 182.150754][ C1] syscall_exit_to_user_mode+0x16/0x40
[ 182.150770][ C1] do_syscall_64+0x58/0xa0
[ 182.150788][ C1] ? clear_bhb_loop+0x60/0xb0
[ 182.150805][ C1] ? clear_bhb_loop+0x60/0xb0
[ 182.150823][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2
[ 182.150840][ C1] RIP: 0033:0x7fb49fa6b057
[ 182.150852][ C1] Code: 00 85 c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 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 d0 ff ff ff f7 d8 64 89
[ 182.150862][ C1] RSP: 002b:00007fb49fa4b218 EFLAGS: 00000246
[ 182.150873][ C1] RAX: 00000000000000ca RBX: 00007fb49fb1bb28 RCX: 00007fb49fa6b059
[ 182.150883][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb49fb1bb28
[ 182.150892][ C1] RBP: 00007fb49fb1bb20 R08: 34203a6b63617473 R09: 34203a6b63617473
[ 182.150902][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000140
[ 182.150911][ C1] R13: 000020000006b000 R14: 0000200000000100 R15: 0000200000000680
[ 182.150925][ C1]
[ 182.150931][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.100 msecs