Warning: Permanently added '10.128.1.80' (ED25519) to the list of known hosts. executing program executing program executing program executing program [ 191.789311][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 191.796690][ C0] rcu: (detected by 0, t=10502 jiffies, g=9033, q=27 ncpus=2) [ 191.804457][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294956253-4294945751), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 191.818051][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g9033 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 191.829301][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 191.839488][ C0] rcu: RCU grace-period kthread stack dump: [ 191.845590][ C0] task:rcu_preempt state:R running task stack:27528 pid:17 ppid:2 flags:0x00004000 [ 191.856539][ C0] Call Trace: [ 191.859867][ C0] [ 191.862849][ C0] __schedule+0x14d2/0x44d0 [ 191.867444][ C0] ? _raw_spin_unlock_irqrestore+0x86/0x110 [ 191.873575][ C0] ? lockdep_hardirqs_on+0x98/0x150 [ 191.878998][ C0] ? _raw_spin_unlock_irqrestore+0xae/0x110 [ 191.884993][ C0] ? asan.module_dtor+0x20/0x20 [ 191.889902][ C0] ? enqueue_timer+0x4ab/0x530 [ 191.894722][ C0] ? __mod_timer+0x984/0xdb0 [ 191.899456][ C0] schedule+0xbd/0x170 [ 191.903572][ C0] schedule_timeout+0x160/0x280 [ 191.908472][ C0] ? console_conditional_schedule+0x40/0x40 [ 191.914418][ C0] ? update_process_times+0x1b0/0x1b0 [ 191.920004][ C0] ? prepare_to_swait_event+0x339/0x360 [ 191.925607][ C0] rcu_gp_fqs_loop+0x302/0x1560 [ 191.930502][ C0] ? rcu_gp_init+0x110e/0x1510 [ 191.935339][ C0] ? rcu_gp_kthread+0x380/0x380 [ 191.940239][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x760 [ 191.946263][ C0] ? rcu_gp_init+0x1510/0x1510 [ 191.951081][ C0] ? rcu_gp_cleanup+0xb4c/0xca0 [ 191.955974][ C0] ? _raw_spin_unlock_irq+0x23/0x50 [ 191.961234][ C0] ? lockdep_hardirqs_on+0x98/0x150 [ 191.966571][ C0] rcu_gp_kthread+0x99/0x380 [ 191.971229][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 191.976485][ C0] ? __kthread_parkme+0x7a/0x1c0 [ 191.981558][ C0] ? __kthread_parkme+0x162/0x1c0 [ 191.986724][ C0] kthread+0x2fa/0x390 [ 191.990834][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 191.995997][ C0] ? kthread_blkcg+0xd0/0xd0 [ 192.000623][ C0] ret_from_fork+0x48/0x80 [ 192.005089][ C0] ? kthread_blkcg+0xd0/0xd0 [ 192.009719][ C0] ret_from_fork_asm+0x11/0x20 [ 192.014544][ C0] [ 192.017609][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 192.023963][ C0] Sending NMI from CPU 0 to CPUs 1: [ 192.029309][ C1] NMI backtrace for cpu 1 [ 192.029331][ C1] CPU: 1 PID: 5796 Comm: syz-executor292 Not tainted 6.6.101-syzkaller #0 [ 192.029346][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 192.029356][ C1] RIP: 0010:native_apic_msr_write+0x39/0x50 [ 192.029377][ C1] Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 f3 0f 1e fa 89 f6 31 d2 e9 87 56 18 03 0f 1f 80 00 00 00 [ 192.029390][ C1] RSP: 0018:ffffc900001f0e58 EFLAGS: 00000046 [ 192.029404][ C1] RAX: 0000000000097f8a RBX: ffff8880b8f28280 RCX: 0000000000000838 [ 192.029415][ C1] RDX: 0000000000000000 RSI: 0000000000097f8a RDI: 0000000000000838 [ 192.029425][ C1] RBP: 0000000000000000 R08: ffffffff8e4a84ef R09: 1ffffffff1c9509d [ 192.029436][ C1] R10: dffffc0000000000 R11: fffffbfff1c9509e R12: dffffc0000000000 [ 192.029447][ C1] R13: 000000001000771e R14: 0000000000097f8a R15: 0000000000000020 [ 192.029457][ C1] FS: 00007fca9af306c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 [ 192.029471][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 192.029481][ C1] CR2: 00007fca9af2fe40 CR3: 0000000077dea000 CR4: 00000000003506e0 [ 192.029495][ C1] Call Trace: [ 192.029502][ C1] [ 192.029507][ C1] lapic_next_event+0x11/0x20 [ 192.029526][ C1] clockevents_program_event+0x1c0/0x310 [ 192.029551][ C1] hrtimer_interrupt+0x5a1/0x9c0 [ 192.029582][ C1] __sysvec_apic_timer_interrupt+0xfb/0x3b0 [ 192.029603][ C1] sysvec_apic_timer_interrupt+0x9f/0xc0 [ 192.029627][ C1] [ 192.029631][ C1] [ 192.029636][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 192.029665][ C1] RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 [ 192.029691][ C1] Code: 00 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 9a c8 f0 f6 48 89 df e8 b2 9a f1 f6 e8 4d 37 15 f7 fb bf 01 00 00 00 92 b2 e4 f6 65 8b 05 93 f8 8c 75 85 c0 74 02 5b c3 e8 70 da 89 [ 192.029703][ C1] RSP: 0018:ffffc900045bfc98 EFLAGS: 00000282 [ 192.029715][ C1] RAX: 7a1d6461bbf04000 RBX: ffff88802e875340 RCX: 7a1d6461bbf04000 [ 192.029727][ C1] RDX: dffffc0000000000 RSI: ffffffff8aaaba40 RDI: 0000000000000001 [ 192.029737][ C1] RBP: ffff88802e8757d8 R08: ffffffff8e4a84ef R09: 1ffffffff1c9509d [ 192.029749][ C1] R10: dffffc0000000000 R11: fffffbfff1c9509e R12: 1ffff11005d0eafb [ 192.029760][ C1] R13: 0000000000000021 R14: dffffc0000000000 R15: 0000000000000000 [ 192.029779][ C1] ? _raw_spin_unlock_irq+0x23/0x50 [ 192.029803][ C1] get_signal+0x11f5/0x1400 [ 192.029840][ C1] arch_do_signal_or_restart+0x96/0x780 [ 192.029868][ C1] ? get_sigframe_size+0x20/0x20 [ 192.029900][ C1] ? exit_to_user_mode_loop+0x3b/0x110 [ 192.029931][ C1] exit_to_user_mode_loop+0x70/0x110 [ 192.029954][ C1] exit_to_user_mode_prepare+0xb1/0x140 [ 192.029977][ C1] syscall_exit_to_user_mode+0x1a/0x50 [ 192.030000][ C1] do_syscall_64+0x61/0xb0 [ 192.030018][ C1] ? clear_bhb_loop+0x40/0x90 [ 192.030032][ C1] ? clear_bhb_loop+0x40/0x90 [ 192.030047][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 192.030072][ C1] RIP: 0033:0x7fca9af77347 [ 192.030093][ C1] Code: 14 25 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 1c 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 [ 192.030105][ C1] RSP: 002b:00007fca9af30218 EFLAGS: 00000246 [ 192.030117][ C1] RAX: 00000000000000ca RBX: 00007fca9affa308 RCX: 00007fca9af77349 [ 192.030127][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fca9affa308 [ 192.030136][ C1] RBP: 00007fca9affa300 R08: 0000000000000000 R09: 0000000000000000 [ 192.030145][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000140 [ 192.030155][ C1] R13: 000020000006b000 R14: 0000200000000100 R15: 0000200000000680 [ 192.030174][ C1]