Warning: Permanently added '10.128.1.233' (ED25519) to the list of known hosts. executing program executing program [ 333.583193][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 333.590400][ C1] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5819/3:b..l [ 333.598597][ C1] rcu: (detected by 1, t=10503 jiffies, g=9437, q=115 ncpus=2) [ 333.606281][ C1] task:syz-executor164 state:R running task stack:28904 pid:5819 ppid:5812 flags:0x00004002 [ 333.617685][ C1] Call Trace: [ 333.621015][ C1] [ 333.623996][ C1] __schedule+0x14d2/0x44d0 [ 333.628586][ C1] ? mark_lock+0x94/0x320 [ 333.632966][ C1] ? asan.module_dtor+0x20/0x20 [ 333.637886][ C1] ? preempt_schedule+0xab/0xc0 [ 333.642784][ C1] preempt_schedule_common+0x82/0xc0 [ 333.648164][ C1] preempt_schedule+0xab/0xc0 [ 333.652899][ C1] ? schedule_preempt_disabled+0x20/0x20 [ 333.658592][ C1] ? __lock_acquire+0x7c80/0x7c80 [ 333.663677][ C1] preempt_schedule_thunk+0x1a/0x30 [ 333.668943][ C1] _raw_spin_unlock+0x3a/0x40 [ 333.673682][ C1] filemap_map_pages+0x1069/0x1630 [ 333.678849][ C1] ? filemap_map_pages+0x154/0x1630 [ 333.684091][ C1] ? filemap_read_folio+0x760/0x760 [ 333.689346][ C1] handle_mm_fault+0x379b/0x4920 [ 333.694335][ C1] ? handle_mm_fault+0xd1/0x4920 [ 333.699333][ C1] ? lock_vma_under_rcu+0x526/0x650 [ 333.704596][ C1] ? numa_migrate_prep+0x350/0x350 [ 333.709795][ C1] ? do_user_addr_fault+0x1c3/0x12e0 [ 333.715126][ C1] do_user_addr_fault+0xad0/0x12e0 [ 333.720288][ C1] ? rcu_is_watching+0x15/0xb0 [ 333.725110][ C1] exc_page_fault+0x67/0x110 [ 333.729755][ C1] asm_exc_page_fault+0x26/0x30 [ 333.734650][ C1] RIP: 0033:0x7fcc3c439e73 [ 333.739211][ C1] RSP: 002b:00007ffcf3a2f5a8 EFLAGS: 00010246 [ 333.745322][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fcc3c439e73 [ 333.753375][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011 [ 333.761381][ C1] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 333.769392][ C1] R10: 00005555576fc750 R11: 0000000000000246 R12: 0000000000000001 [ 333.777402][ C1] R13: 00007ffcf3a2f9a8 R14: 0000000000000001 R15: 0000000000000001 [ 333.785440][ C1] [ 333.788508][ C1] rcu: rcu_preempt kthread starved for 10522 jiffies! g9437 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 333.799657][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 333.809748][ C1] rcu: RCU grace-period kthread stack dump: [ 333.815666][ C1] task:rcu_preempt state:R running task stack:27560 pid:17 ppid:2 flags:0x00004000 [ 333.826533][ C1] Call Trace: [ 333.829842][ C1] [ 333.832812][ C1] __schedule+0x14d2/0x44d0 [ 333.837380][ C1] ? _raw_spin_unlock_irqrestore+0x86/0x110 [ 333.843313][ C1] ? lockdep_hardirqs_on+0x98/0x150 [ 333.848568][ C1] ? _raw_spin_unlock_irqrestore+0xae/0x110 [ 333.854503][ C1] ? asan.module_dtor+0x20/0x20 [ 333.859404][ C1] ? enqueue_timer+0x225/0x530 [ 333.864213][ C1] ? __mod_timer+0x984/0xdb0 [ 333.868872][ C1] schedule+0xbd/0x170 [ 333.872990][ C1] schedule_timeout+0x160/0x280 [ 333.877894][ C1] ? console_conditional_schedule+0x40/0x40 [ 333.883846][ C1] ? update_process_times+0x1b0/0x1b0 [ 333.889273][ C1] ? prepare_to_swait_event+0x339/0x360 [ 333.894866][ C1] rcu_gp_fqs_loop+0x302/0x1560 [ 333.899772][ C1] ? rcu_gp_init+0x110e/0x1510 [ 333.904592][ C1] ? rcu_gp_kthread+0x380/0x380 [ 333.909510][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x760 [ 333.915532][ C1] ? rcu_gp_init+0x1510/0x1510 [ 333.920347][ C1] ? rcu_gp_cleanup+0xb4c/0xca0 [ 333.925259][ C1] ? _raw_spin_unlock_irq+0x23/0x50 [ 333.930517][ C1] ? lockdep_hardirqs_on+0x98/0x150 [ 333.935790][ C1] rcu_gp_kthread+0x99/0x380 [ 333.940456][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 333.945633][ C1] ? __kthread_parkme+0x7a/0x1c0 [ 333.950627][ C1] ? __kthread_parkme+0x162/0x1c0 [ 333.955705][ C1] kthread+0x2fa/0x390 [ 333.959818][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 333.964991][ C1] ? kthread_blkcg+0xd0/0xd0 [ 333.969627][ C1] ret_from_fork+0x48/0x80 [ 333.974087][ C1] ? kthread_blkcg+0xd0/0xd0 [ 333.978714][ C1] ret_from_fork_asm+0x11/0x20 [ 333.983541][ C1] [ 333.986592][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 333.992959][ C1] Sending NMI from CPU 1 to CPUs 0: [ 333.998221][ C0] NMI backtrace for cpu 0 [ 333.998243][ C0] CPU: 0 PID: 5821 Comm: syz-executor164 Not tainted syzkaller #0 [ 333.998259][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 333.998269][ C0] RIP: 0010:__hrtimer_run_queues+0x97/0xc40 [ 333.998296][ C0] Code: 81 48 8d 8c 24 c0 00 00 00 48 c1 e9 03 48 b8 f1 f1 f1 f1 00 f3 f3 f3 48 89 4c 24 68 4a 89 04 29 e8 1e dd 0f 00 48 89 5c 24 30 <48> 83 c3 44 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 63 0b [ 333.998310][ C0] RSP: 0018:ffffc90000007d40 EFLAGS: 00000006 [ 333.998324][ C0] RAX: ffffffff8175b282 RBX: ffff8880b8e2b940 RCX: ffff88802f721e00 [ 333.998337][ C0] RDX: 0000000000010000 RSI: 0000004dc1de77f6 RDI: ffff8880b8e2b940 [ 333.998348][ C0] RBP: ffffc90000007e90 R08: ffffffff8e4a912f R09: 1ffffffff1c95225 [ 333.998360][ C0] R10: dffffc0000000000 R11: fffffbfff1c95226 R12: ffff8880b8e2b98c [ 333.998372][ C0] R13: dffffc0000000000 R14: 000000000000000f R15: 0000000000000011 [ 333.998383][ C0] FS: 00007fcc3c3f96c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 [ 333.998397][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 333.998408][ C0] CR2: 0000200000000058 CR3: 0000000075fa9000 CR4: 00000000003506f0 [ 333.998422][ C0] Call Trace: [ 333.998429][ C0] [ 333.998434][ C0] ? ktime_get_update_offsets_now+0x99/0x3f0 [ 333.998455][ C0] ? ktime_get_update_offsets_now+0x99/0x3f0 [ 333.998477][ C0] ? seqcount_lockdep_reader_access+0x160/0x1c0 [ 333.998505][ C0] ? ktime_get_real_ts64+0x420/0x420 [ 333.998526][ C0] ? _raw_spin_lock_irqsave+0xb4/0xf0 [ 333.998553][ C0] ? hrtimer_interrupt+0x9c0/0x9c0 [ 333.998568][ C0] ? read_tsc+0x9/0x20 [ 333.998585][ C0] ? ktime_get_update_offsets_now+0x3d2/0x3f0 [ 333.998609][ C0] hrtimer_interrupt+0x3c9/0x9c0 [ 333.998639][ C0] __sysvec_apic_timer_interrupt+0xfb/0x3b0 [ 333.998667][ C0] sysvec_apic_timer_interrupt+0x9f/0xc0 [ 333.998692][ C0] [ 333.998696][ C0] [ 333.998701][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 333.998719][ C0] RIP: 0010:lock_is_held_type+0x56/0x190 [ 333.998743][ C0] Code: 0f 84 03 01 00 00 65 8b 05 1f 7e 94 75 85 c0 0f 85 f4 00 00 00 65 48 8b 1d 27 ae 95 75 83 bb dc 0a 00 00 00 0f 85 df 00 00 00 <41> 89 f7 49 89 fe 48 c7 04 24 00 00 00 00 9c 8f 04 24 4c 8b 2c 24 [ 333.998756][ C0] RSP: 0018:ffffc900045afe90 EFLAGS: 00000246 [ 333.998769][ C0] RAX: 0000000000000000 RBX: ffff88802f721e00 RCX: 1a1971df0e88af00 [ 333.998780][ C0] RDX: ffff88802f721e00 RSI: 00000000ffffffff RDI: ffffffff8cd2fc20 [ 333.998791][ C0] RBP: 00000000ffffffff R08: dffffc0000000000 R09: 1ffffffff21b4aa0 [ 333.998802][ C0] R10: dffffc0000000000 R11: fffffbfff21b4aa1 R12: 0000000000000001 [ 333.998813][ C0] R13: dffffc0000000000 R14: ffffffff8cbdf2c0 R15: ffff8880276e5968 [ 333.998837][ C0] __task_pid_nr_ns+0x1ef/0x460 [ 333.998858][ C0] ? __task_pid_nr_ns+0x28/0x460 [ 333.998880][ C0] __ia32_sys_getpid+0x1d/0x20 [ 333.998901][ C0] do_syscall_64+0x55/0xb0 [ 333.998920][ C0] ? clear_bhb_loop+0x40/0x90 [ 333.998935][ C0] ? clear_bhb_loop+0x40/0x90 [ 333.998952][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 333.998978][ C0] RIP: 0033:0x7fcc3c43a5c7 [ 333.998990][ C0] Code: 0b e9 68 fe ff ff 48 83 c4 18 48 8d 3d 32 de 08 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 d3 aa fd ff 0f 1f 00 b8 27 00 00 00 0f 05 0f 1f 84 00 00 00 00 00 31 f6 31 ff e9 87 df 02 00 0f 1f 80 00 [ 333.999003][ C0] RSP: 002b:00007fcc3c3f8b88 EFLAGS: 00000206 ORIG_RAX: 0000000000000027 [ 333.999018][ C0] RAX: ffffffffffffffda RBX: 00007fcc3c3f8cf0 RCX: 00007fcc3c43a5c7 [ 333.999029][ C0] RDX: 00007fcc3c3f8bc0 RSI: 00007fcc3c3f8cf0 RDI: 0000000000000021 [ 333.999040][ C0] RBP: 0000000000000000 R08: 00007fcc3c3f96c0 R09: 00007fcc3c3f96c0 [ 333.999050][ C0] R10: 0000000000000000 R11: 0000000000000206 R12: 00007fcc3c4c330c [ 333.999060][ C0] R13: 0000000000000000 R14: 00007ffcf3a2f4e0 R15: 00007ffcf3a2f5c8 [ 333.999079][ C0]