Warning: Permanently added '10.128.0.195' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 174.025798][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 174.032925][ C0] rcu: 1-...!: (0 ticks this GP) idle=7d1/1/0x4000000000000000 softirq=5817/5817 fqs=0 [ 174.043394][ C0] (detected by 0, t=10502 jiffies, g=5109, q=105) [ 174.049917][ C0] Sending NMI from CPU 0 to CPUs 1: [ 174.055182][ C1] NMI backtrace for cpu 1 [ 174.055191][ C1] CPU: 1 PID: 4188 Comm: syz-executor940 Not tainted syzkaller #0 [ 174.055206][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 174.055214][ C1] RIP: 0010:check_preemption_disabled+0x4b/0x110 [ 174.055253][ C1] Code: 0d 42 78 60 76 f7 c1 ff ff ff 7f 74 1f 65 48 8b 0c 25 28 00 00 00 48 3b 4c 24 08 0f 85 c4 00 00 00 48 83 c4 10 5b 41 5e 41 5f <5d> c3 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 74 [ 174.055264][ C1] RSP: 0018:ffffc90000dd0f30 EFLAGS: 00000086 [ 174.055278][ C1] RAX: 0000000000000001 RBX: ffff88807978bb80 RCX: 8ab3cc895cccaf00 [ 174.055288][ C1] RDX: 0000000000000000 RSI: ffffffff8a59e7e0 RDI: ffffffff8a59e7a0 [ 174.055298][ C1] RBP: ffffc90000dd0fe0 R08: dffffc0000000000 R09: ffffed1027fd4641 [ 174.055308][ C1] R10: ffffed1027fd4641 R11: 1ffff11027fd4640 R12: dffffc0000000000 [ 174.055318][ C1] R13: 0000000000000000 R14: ffff88813fe78018 R15: 1ffff920001ba1e8 [ 174.055327][ C1] FS: 0000555556c0f380(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 [ 174.055340][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 174.055350][ C1] CR2: 00007fdb20a92130 CR3: 00000000177cd000 CR4: 00000000003506e0 [ 174.055364][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 174.055372][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 174.055381][ C1] Call Trace: [ 174.055386][ C1] [ 174.055392][ C1] __irq_exit_rcu+0x134/0x220 [ 174.055408][ C1] ? irq_exit_rcu+0x20/0x20 [ 174.055419][ C1] ? kvm_sched_clock_read+0x14/0x40 [ 174.055439][ C1] irq_exit_rcu+0x5/0x20 [ 174.055450][ C1] sysvec_irq_work+0x9d/0xc0 [ 174.055466][ C1] [ 174.055470][ C1] [ 174.055475][ C1] asm_sysvec_irq_work+0x16/0x20 [ 174.055489][ C1] RIP: 0010:rcu_read_unlock_special+0x84/0x480 [ 174.055505][ C1] Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 ed 11 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b [ 174.055515][ C1] RSP: 0018:ffffc90002e1f800 EFLAGS: 00000206 [ 174.055526][ C1] RAX: 8ab3cc895cccaf00 RBX: 1ffff920005c3f04 RCX: 8ab3cc895cccaf00 [ 174.055535][ C1] RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: ffffffff8a59e800 [ 174.055545][ C1] RBP: ffffc90002e1f8e0 R08: dffffc0000000000 R09: ffffed1017227662 [ 174.055554][ C1] R10: ffffed1017227662 R11: 1ffff11017227661 R12: ffffffff8c120c00 [ 174.055564][ C1] R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002 [ 174.055582][ C1] ? asm_sysvec_apic_timer_interrupt+0x10/0x20 [ 174.055598][ C1] ? __rcu_read_unlock+0xd0/0xd0 [ 174.055610][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 174.055631][ C1] __rcu_read_unlock+0x78/0xd0 [ 174.055645][ C1] __virt_addr_valid+0x3b8/0x470 [ 174.055659][ C1] free_pages+0x12/0x50 [ 174.055675][ C1] __mmdrop+0xaa/0x3e0 [ 174.055689][ C1] finish_task_switch+0x215/0x640 [ 174.055707][ C1] ? __switch_to_asm+0x34/0x60 [ 174.055723][ C1] __schedule+0x11c3/0x4390 [ 174.055744][ C1] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 174.055765][ C1] ? timerqueue_add+0x1c6/0x1f0 [ 174.055780][ C1] ? release_firmware_map_entry+0x190/0x190 [ 174.055795][ C1] ? _raw_spin_unlock_irqrestore+0x82/0x100 [ 174.055809][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 174.055824][ C1] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 174.055837][ C1] ? _raw_spin_unlock+0x40/0x40 [ 174.055849][ C1] ? hrtimer_start_range_ns+0xaa1/0xc20 [ 174.055867][ C1] schedule+0x11b/0x1e0 [ 174.055882][ C1] do_nanosleep+0x1f1/0x760 [ 174.055900][ C1] ? usleep_range_state+0x180/0x180 [ 174.055913][ C1] ? __lock_acquire+0x7c60/0x7c60 [ 174.055932][ C1] hrtimer_nanosleep+0x2f7/0x520 [ 174.055957][ C1] ? nanosleep_copyout+0x110/0x110 [ 174.055974][ C1] ? __remove_hrtimer+0x3a0/0x3a0 [ 174.055990][ C1] ? timespec64_add_safe+0x1d0/0x1d0 [ 174.056009][ C1] __se_sys_clock_nanosleep+0x2e6/0x370 [ 174.056026][ C1] ? __x64_sys_clock_nanosleep+0xa0/0xa0 [ 174.056043][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 174.056059][ C1] do_syscall_64+0x4c/0xa0 [ 174.056072][ C1] ? clear_bhb_loop+0x30/0x80 [ 174.056085][ C1] ? clear_bhb_loop+0x30/0x80 [ 174.056099][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 174.056114][ C1] RIP: 0033:0x7fdb20a3e2c3 [ 174.056128][ C1] Code: 00 00 00 00 00 66 90 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d be 1d 05 00 00 74 14 b8 e6 00 00 00 0f 05 d8 c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10 [ 174.056138][ C1] RSP: 002b:00007ffcb85818d8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6 [ 174.056152][ C1] RAX: ffffffffffffffda RBX: 0000000000001076 RCX: 00007fdb20a3e2c3 [ 174.056161][ C1] RDX: 00007ffcb85818f0 RSI: 0000000000000000 RDI: 0000000000000000 [ 174.056170][ C1] RBP: 00000000000f4240 R08: 0000000000000044 R09: 0037626ac8d9b868 [ 174.056179][ C1] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000010d44 [ 174.056187][ C1] R13: 00007ffcb858192c R14: 00007ffcb8581940 R15: 00007ffcb8581930 [ 174.056204][ C1] [ 174.056209][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.026 msecs [ 174.057177][ C0] rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g5109 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 [ 174.572270][ C0] rcu: Possible timer handling issue on cpu=1 timer-softirq=3254 [ 174.580341][ C0] rcu: rcu_preempt kthread starved for 10502 jiffies! g5109 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1 [ 174.591713][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 174.601772][ C0] rcu: RCU grace-period kthread stack dump: [ 174.607661][ C0] task:rcu_preempt state:I stack:27880 pid: 15 ppid: 2 flags:0x00004000 [ 174.617005][ C0] Call Trace: [ 174.620290][ C0] [ 174.623240][ C0] __schedule+0x11bb/0x4390 [ 174.627768][ C0] ? _raw_spin_lock_irqsave+0x7f/0xf0 [ 174.633401][ C0] ? _raw_spin_unlock_irqrestore+0x82/0x100 [ 174.639397][ C0] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 174.645482][ C0] ? _raw_spin_unlock+0x40/0x40 [ 174.650609][ C0] ? rcu_is_watching+0x11/0xa0 [ 174.655568][ C0] ? release_firmware_map_entry+0x190/0x190 [ 174.661759][ C0] schedule+0x11b/0x1e0 [ 174.665933][ C0] schedule_timeout+0x15c/0x280 [ 174.670796][ C0] ? console_conditional_schedule+0x40/0x40 [ 174.676873][ C0] ? update_process_times+0x200/0x200 [ 174.682381][ C0] ? prepare_to_swait_event+0x331/0x350 [ 174.688149][ C0] rcu_gp_fqs_loop+0x29e/0x11b0 [ 174.693225][ C0] ? lockdep_hardirqs_on+0x94/0x140 [ 174.698444][ C0] ? rcu_gp_init+0xd58/0x10e0 [ 174.703136][ C0] ? rcu_gp_init+0x10e0/0x10e0 [ 174.707925][ C0] ? _raw_spin_unlock_irq+0x1f/0x40 [ 174.713372][ C0] ? lockdep_hardirqs_on+0x94/0x140 [ 174.718615][ C0] rcu_gp_kthread+0x98/0x350 [ 174.723399][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 174.728542][ C0] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 174.734461][ C0] ? __kthread_parkme+0x157/0x1b0 [ 174.739643][ C0] kthread+0x436/0x520 [ 174.743814][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 174.749314][ C0] ? kthread_blkcg+0xd0/0xd0 [ 174.753916][ C0] ret_from_fork+0x1f/0x30 [ 174.758449][ C0] [ 174.761475][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 174.767800][ C0] Sending NMI from CPU 0 to CPUs 1: [ 174.773105][ C1] NMI backtrace for cpu 1 [ 174.773114][ C1] CPU: 1 PID: 4188 Comm: syz-executor940 Not tainted syzkaller #0 [ 174.773130][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 174.773137][ C1] RIP: 0010:irq_work_run_list+0x21c/0x330 [ 174.773158][ C1] Code: 00 00 00 00 fc ff df 80 3c 08 00 74 05 e8 4c 99 38 00 4c 89 f7 41 ff 56 10 4c 8b 74 24 10 41 83 e7 fc 48 89 df be 04 00 00 00 cf 9a 38 00 44 89 e8 f0 44 0f b1 3b 4d 85 f6 0f 84 9e 00 00 00 [ 174.773169][ C1] RSP: 0018:ffffc90000dd0f00 EFLAGS: 00000002 [ 174.773182][ C1] RAX: ffff88807978c658 RBX: ffff8880b913b1f8 RCX: ffff88807978bb80 [ 174.773193][ C1] RDX: ffff88807978c658 RSI: 0000000000000004 RDI: ffff8880b913b1f8 [ 174.773203][ C1] RBP: ffffc90000dd0fb0 R08: dffffc0000000000 R09: ffffed1017227640 [ 174.773212][ C1] R10: ffffed1017227640 R11: 1ffff1101722763f R12: 1ffff1100f2f18cb [ 174.773222][ C1] R13: 0000000000000022 R14: 0000000000000000 R15: 0000000000000020 [ 174.773231][ C1] FS: 0000555556c0f380(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 [ 174.773243][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 174.773254][ C1] CR2: 00007fdb20a92130 CR3: 00000000177cd000 CR4: 00000000003506e0 [ 174.773268][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 174.773276][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 174.773285][ C1] Call Trace: [ 174.773291][ C1] [ 174.773298][ C1] ? irq_work_run+0xe0/0xe0 [ 174.773314][ C1] ? kvm_sched_clock_read+0x14/0x40 [ 174.773331][ C1] irq_work_run+0x63/0xe0 [ 174.773346][ C1] __sysvec_irq_work+0x98/0x240 [ 174.773362][ C1] sysvec_irq_work+0x98/0xc0 [ 174.773378][ C1] [ 174.773381][ C1] [ 174.773386][ C1] asm_sysvec_irq_work+0x16/0x20 [ 174.773401][ C1] RIP: 0010:rcu_read_unlock_special+0x84/0x480 [ 174.773416][ C1] Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 ed 11 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b [ 174.773426][ C1] RSP: 0018:ffffc90002e1f800 EFLAGS: 00000206 [ 174.773437][ C1] RAX: 8ab3cc895cccaf00 RBX: 1ffff920005c3f04 RCX: 8ab3cc895cccaf00 [ 174.773447][ C1] RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: ffffffff8a59e800 [ 174.773456][ C1] RBP: ffffc90002e1f8e0 R08: dffffc0000000000 R09: ffffed1017227662 [ 174.773466][ C1] R10: ffffed1017227662 R11: 1ffff11017227661 R12: ffffffff8c120c00 [ 174.773475][ C1] R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002 [ 174.773493][ C1] ? asm_sysvec_apic_timer_interrupt+0x10/0x20 [ 174.773509][ C1] ? __rcu_read_unlock+0xd0/0xd0 [ 174.773520][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 174.773542][ C1] __rcu_read_unlock+0x78/0xd0 [ 174.773555][ C1] __virt_addr_valid+0x3b8/0x470 [ 174.773570][ C1] free_pages+0x12/0x50 [ 174.773585][ C1] __mmdrop+0xaa/0x3e0 [ 174.773600][ C1] finish_task_switch+0x215/0x640 [ 174.773617][ C1] ? __switch_to_asm+0x34/0x60 [ 174.773632][ C1] __schedule+0x11c3/0x4390 [ 174.773653][ C1] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 174.773674][ C1] ? timerqueue_add+0x1c6/0x1f0 [ 174.773689][ C1] ? release_firmware_map_entry+0x190/0x190 [ 174.773703][ C1] ? _raw_spin_unlock_irqrestore+0x82/0x100 [ 174.773717][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 174.773732][ C1] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 174.773746][ C1] ? _raw_spin_unlock+0x40/0x40 [ 174.773758][ C1] ? hrtimer_start_range_ns+0xaa1/0xc20 [ 174.773776][ C1] schedule+0x11b/0x1e0 [ 174.773791][ C1] do_nanosleep+0x1f1/0x760 [ 174.773810][ C1] ? usleep_range_state+0x180/0x180 [ 174.773823][ C1] ? __lock_acquire+0x7c60/0x7c60 [ 174.773841][ C1] hrtimer_nanosleep+0x2f7/0x520 [ 174.773858][ C1] ? nanosleep_copyout+0x110/0x110 [ 174.773874][ C1] ? __remove_hrtimer+0x3a0/0x3a0 [ 174.773889][ C1] ? timespec64_add_safe+0x1d0/0x1d0 [ 174.773907][ C1] __se_sys_clock_nanosleep+0x2e6/0x370 [ 174.773924][ C1] ? __x64_sys_clock_nanosleep+0xa0/0xa0 [ 174.773941][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 174.773965][ C1] do_syscall_64+0x4c/0xa0 [ 174.773978][ C1] ? clear_bhb_loop+0x30/0x80 [ 174.773991][ C1] ? clear_bhb_loop+0x30/0x80 [ 174.774005][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 174.774019][ C1] RIP: 0033:0x7fdb20a3e2c3 [ 174.774032][ C1] Code: 00 00 00 00 00 66 90 83 ff 03 74 7b 83 ff 02 b8 fa ff ff ff 49 89 ca 0f 44 f8 80 3d be 1d 05 00 00 74 14 b8 e6 00 00 00 0f 05 d8 c3 66 2e 0f 1f 84 00 00 00 00 00 48 83 ec 28 48 89 54 24 10 [ 174.774042][ C1] RSP: 002b:00007ffcb85818d8 EFLAGS: 00000202 ORIG_RAX: 00000000000000e6 [ 174.774056][ C1] RAX: ffffffffffffffda RBX: 0000000000001076 RCX: 00007fdb20a3e2c3 [ 174.774065][ C1] RDX: 00007ffcb85818f0 RSI: 0000000000000000 RDI: 0000000000000000 [ 174.774074][ C1] RBP: 00000000000f4240 R08: 0000000000000044 R09: 0037626ac8d9b868 [ 174.774083][ C1] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000010d44 [ 174.774092][ C1] R13: 00007ffcb858192c R14: 00007ffcb8581940 R15: 00007ffcb8581930 [ 174.774109][ C1] [ 178.976094][ T1347] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-... } 10997 jiffies s: 549 root: 0x2/. [ 178.989396][ T1347] rcu: blocking rcu_node structures (internal RCU debug): [ 178.997048][ T1347] Task dump for CPU 1: [ 179.001667][ T1347] task:syz-executor940 state:R running task stack:27104 pid: 4188 ppid: 4186 flags:0x0000400a [ 179.012881][ T1347] Call Trace: [ 179.016320][ T1347] [ 179.019296][ T1347] ? __schedule+0x11c3/0x4390 [ 179.024022][ T1347] ? lockdep_hardirqs_on_prepare+0x3fc/0x760 [ 179.030428][ T1347] ? timerqueue_add+0x1c6/0x1f0 [ 179.035437][ T1347] ? release_firmware_map_entry+0x190/0x190 [ 179.041474][ T1347] ? _raw_spin_unlock_irqrestore+0x82/0x100 [ 179.047540][ T1347] ? lockdep_hardirqs_on+0x94/0x140 [ 179.053561][ T1347] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 179.059794][ T1347] ? _raw_spin_unlock+0x40/0x40 [ 179.064845][ T1347] ? hrtimer_start_range_ns+0xaa1/0xc20 [ 179.070567][ T1347] ? schedule+0x11b/0x1e0 [ 179.075067][ T1347] ? do_nanosleep+0x1f1/0x760 [ 179.080000][ T1347] ? usleep_range_state+0x180/0x180 [ 179.086054][ T1347] ? __lock_acquire+0x7c60/0x7c60 [ 179.091290][ T1347] ? hrtimer_nanosleep+0x2f7/0x520 [ 179.096704][ T1347] ? nanosleep_copyout+0x110/0x110 [ 179.102083][ T1347] ? __remove_hrtimer+0x3a0/0x3a0 [ 179.107671][ T1347] ? timespec64_add_safe+0x1d0/0x1d0 [ 179.113192][ T1347] ? __se_sys_clock_nanosleep+0x2e6/0x370 [ 179.119064][ T1347] ? __x64_sys_clock_nanosleep+0xa0/0xa0 [ 179.124820][ T1347] ? lockdep_hardirqs_on+0x94/0x140 [ 179.130102][ T1347] ? do_syscall_64+0x4c/0xa0 [ 179.134716][ T1347] ? clear_bhb_loop+0x30/0x80 [ 179.139458][ T1347] ? clear_bhb_loop+0x30/0x80 [ 179.144209][ T1347] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 179.150527][ T1347]