Warning: Permanently added '10.128.1.182' (ED25519) to the list of known hosts. 2025/11/11 21:54:54 parsed 1 programs [ 60.328893][ T2668] Adding 124996k swap on ./swap-file. Priority:0 extents:1 across:124996k 2025/11/11 21:54:57 executed programs: 0 [ 165.695757][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 165.702728][ C0] rcu: (detected by 0, t=10002 jiffies, g=2621, q=15378 ncpus=2) [ 165.710529][ C0] rcu: All QSes seen, last rcu_preempt kthread activity 10002 (4294953801-4294943799), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 165.723877][ C0] rcu: rcu_preempt kthread starved for 10002 jiffies! g2621 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 165.734959][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 165.745000][ C0] rcu: RCU grace-period kthread stack dump: [ 165.750879][ C0] task:rcu_preempt state:R running task stack:14472 pid:16 ppid:2 flags:0x00004000 [ 165.761624][ C0] Call Trace: [ 165.764937][ C0] [ 165.767859][ C0] __schedule+0x696/0x950 [ 165.772175][ C0] ? _raw_spin_unlock_irqrestore+0x5d/0xa0 [ 165.777964][ C0] schedule+0x54/0xc0 [ 165.781932][ C0] schedule_timeout+0x115/0x190 [ 165.786768][ C0] ? update_process_times+0x80/0x80 [ 165.791952][ C0] rcu_gp_fqs_loop+0x185/0x590 [ 165.796708][ C0] ? do_raw_spin_unlock+0x59/0x100 [ 165.801808][ C0] ? rcu_barrier_callback+0x20/0x20 [ 165.807001][ C0] rcu_gp_kthread+0x1c/0x110 [ 165.811589][ C0] kthread+0xe3/0x100 [ 165.815556][ C0] ? kthread_blkcg+0x30/0x30 [ 165.820136][ C0] ret_from_fork+0x2f/0x40 [ 165.824538][ C0] ? kthread_blkcg+0x30/0x30 [ 165.829196][ C0] ret_from_fork_asm+0x11/0x20 [ 165.833943][ C0] [ 165.836957][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 165.843357][ C0] Sending NMI from CPU 0 to CPUs 1: [ 165.848546][ C1] NMI backtrace for cpu 1 [ 165.848548][ C1] CPU: 1 PID: 3805 Comm: syz.0.52 Not tainted syzkaller #0 [ 165.848552][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 [ 165.848554][ C1] RIP: 0010:native_apic_mem_write+0xc/0x10 [ 165.848559][ C1] Code: 1e fa 8b 7f 04 e9 24 95 8c 00 cc cc cc cc f3 0f 1e fa 31 c0 89 04 25 b0 c0 5f ff c3 66 90 f3 0f 1e fa 89 f8 89 b0 00 c0 5f ff 0f 1f 00 f3 0f 1e fa 89 f8 8b 80 00 c0 5f ff c3 0f 1f 00 f3 0f [ 165.848562][ C1] RSP: 0018:ffffc900000d0f60 EFLAGS: 00000002 [ 165.848566][ C1] RAX: 0000000000000380 RBX: ffff888237d1c180 RCX: 0000000000000020 [ 165.848568][ C1] RDX: 0000000005cbfc1c RSI: 000000000006dfd9 RDI: 0000000000000380 [ 165.848570][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000004f [ 165.848572][ C1] R10: 0000000000000000 R11: ffffc900000d0ff8 R12: 7fffffffffffffff [ 165.848573][ C1] R13: ffff888237d1f3a8 R14: 000000269c3cfd80 R15: 000000269c3cfd80 [ 165.848575][ C1] FS: 00007f3ccc7ff6c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000 [ 165.848578][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 165.848580][ C1] CR2: 0000001b2e063fff CR3: 000000010933b000 CR4: 00000000003506e0 [ 165.848588][ C1] Call Trace: [ 165.848590][ C1] [ 165.848591][ C1] lapic_next_event+0x11/0x20 [ 165.848594][ C1] clockevents_program_event+0x71/0x180 [ 165.848598][ C1] hrtimer_interrupt+0x121/0x390 [ 165.848602][ C1] __sysvec_apic_timer_interrupt+0x80/0x1f0 [ 165.848605][ C1] sysvec_apic_timer_interrupt+0x8b/0xb0 [ 165.848609][ C1] [ 165.848609][ C1] [ 165.848610][ C1] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 165.848616][ C1] RIP: 0010:_raw_spin_unlock_irq+0x24/0x40 [ 165.848619][ C1] Code: ff 0f 1f 44 00 00 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 5a fa c0 fe 48 89 df e8 b2 2a c1 fe fb bf 01 00 00 00 37 23 be fe 65 8b 05 68 48 b5 7d 85 c0 74 02 5b c3 0f 1f 44 00 [ 165.848622][ C1] RSP: 0018:ffffc90001e43dd0 EFLAGS: 00000246 [ 165.848624][ C1] RAX: 0000000000000001 RBX: ffff88810f2dbd40 RCX: 0000000000000001 [ 165.848625][ C1] RDX: f3e939ec8e99e7f8 RSI: ffffffff82e84ce9 RDI: 0000000000000001 [ 165.848627][ C1] RBP: 0000000000000021 R08: 0000000000000000 R09: 00000000000000a6 [ 165.848629][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: ffff888105f623f8 [ 165.848630][ C1] R13: ffff888105f623e0 R14: ffff888105f61b40 R15: ffffc90001e43e50 [ 165.848633][ C1] get_signal+0x6be/0x7a0 [ 165.848638][ C1] arch_do_signal_or_restart+0x89/0x260 [ 165.848642][ C1] exit_to_user_mode_loop+0x6b/0xd0 [ 165.848646][ C1] exit_to_user_mode_prepare+0x9c/0xe0 [ 165.848650][ C1] syscall_exit_to_user_mode+0x1a/0x40 [ 165.848654][ C1] do_syscall_64+0x61/0xb0 [ 165.848658][ C1] ? clear_bhb_loop+0x40/0x90 [ 165.848660][ C1] ? clear_bhb_loop+0x40/0x90 [ 165.848663][ C1] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 165.848667][ C1] RIP: 0033:0x7f3ccc918757 [ 165.848670][ C1] Code: ff 48 c7 44 24 18 3f 00 00 00 48 c7 44 24 10 40 00 00 00 48 c7 44 24 08 00 00 00 00 e9 ad fd ff ff 66 90 48 c7 c0 a8 ff ff ff <64> 48 03 04 25 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f [ 165.848672][ C1] RSP: 002b:00007f3ccc7ff058 EFLAGS: 00000246 [ 165.848674][ C1] RAX: ffffffffffffffa8 RBX: 00007f3cccbe5fa0 RCX: 00007f3ccca11f91 [ 165.848676][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 165.848677][ C1] RBP: 00007f3ccca11f91 R08: 0000000000000000 R09: 0000000000000000 [ 165.848678][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 165.848680][ C1] R13: 00007f3cccbe6038 R14: 00007f3cccbe5fa0 R15: 00007ffcd04614f8 [ 165.848682][ C1]