[ 86.706068][ T7] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.90' (ED25519) to the list of known hosts. executing program executing program executing program [ 194.713732][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 194.720824][ C1] (detected by 1, t=10502 jiffies, g=5513, q=35) [ 194.727264][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294956593-4294946091), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 194.740731][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g5513 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1 [ 194.751856][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 194.761833][ C1] rcu: RCU grace-period kthread stack dump: [ 194.767740][ C1] task:rcu_preempt state:R running task stack:27008 pid: 15 ppid: 2 flags:0x00004000 [ 194.778577][ C1] Call Trace: [ 194.781880][ C1] [ 194.784829][ C1] __schedule+0x11bb/0x4390 [ 194.789390][ C1] ? _raw_spin_lock_irqsave+0x7f/0xf0 [ 194.794793][ C1] ? _raw_spin_unlock_irqrestore+0x82/0x100 [ 194.800714][ C1] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 194.806633][ C1] ? _raw_spin_unlock+0x40/0x40 [ 194.811505][ C1] ? rcu_is_watching+0x11/0xa0 [ 194.816314][ C1] ? release_firmware_map_entry+0x190/0x190 [ 194.822241][ C1] schedule+0x11b/0x1e0 [ 194.826418][ C1] schedule_timeout+0x15c/0x280 [ 194.831315][ C1] ? console_conditional_schedule+0x40/0x40 [ 194.837236][ C1] ? update_process_times+0x200/0x200 [ 194.842676][ C1] ? prepare_to_swait_event+0x331/0x350 [ 194.848424][ C1] rcu_gp_fqs_loop+0x29e/0x11b0 [ 194.853340][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 194.858566][ C1] ? rcu_gp_init+0xd58/0x10e0 [ 194.863276][ C1] ? rcu_gp_init+0x10e0/0x10e0 [ 194.868072][ C1] ? _raw_spin_unlock_irq+0x1f/0x40 [ 194.873301][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 194.878543][ C1] rcu_gp_kthread+0x98/0x350 [ 194.883163][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 194.888298][ C1] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 194.894221][ C1] ? __kthread_parkme+0x157/0x1b0 [ 194.899290][ C1] kthread+0x436/0x520 [ 194.903399][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 194.908530][ C1] ? kthread_blkcg+0xd0/0xd0 [ 194.913142][ C1] ret_from_fork+0x1f/0x30 [ 194.917855][ C1] [ 194.920903][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 194.927240][ C1] NMI backtrace for cpu 1 [ 194.931606][ C1] CPU: 1 PID: 4205 Comm: syz-executor534 Not tainted syzkaller #0 [ 194.939427][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 [ 194.949606][ C1] Call Trace: [ 194.952905][ C1] [ 194.955784][ C1] dump_stack_lvl+0x168/0x230 [ 194.960491][ C1] ? show_regs_print_info+0x20/0x20 [ 194.965717][ C1] ? load_image+0x3b0/0x3b0 [ 194.970255][ C1] ? irq_work_queue+0xbf/0x140 [ 194.975049][ C1] nmi_cpu_backtrace+0x397/0x3d0 [ 194.980189][ C1] ? nmi_trigger_cpumask_backtrace+0x280/0x280 [ 194.986373][ C1] ? _printk+0xcc/0x110 [ 194.990555][ C1] ? cpu_online+0x1d/0x30 [ 194.994910][ C1] ? load_image+0x3b0/0x3b0 [ 194.999439][ C1] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 195.005529][ C1] nmi_trigger_cpumask_backtrace+0x163/0x280 [ 195.011538][ C1] rcu_check_gp_kthread_starvation+0x1cd/0x250 [ 195.017733][ C1] print_other_cpu_stall+0x10c8/0x1220 [ 195.023252][ C1] ? print_cpu_stall+0x5f0/0x5f0 [ 195.028278][ C1] ? rcu_qs+0xc1/0x160 [ 195.032373][ C1] ? rcu_softirq_qs+0x280/0x280 [ 195.037291][ C1] rcu_sched_clock_irq+0x831/0x1110 [ 195.042525][ C1] ? rcutree_dead_cpu+0x20/0x20 [ 195.047409][ C1] ? hrtimer_run_queues+0x162/0x440 [ 195.052723][ C1] ? account_process_tick+0x227/0x3a0 [ 195.058122][ C1] update_process_times+0x193/0x200 [ 195.063346][ C1] tick_sched_timer+0x37d/0x560 [ 195.068229][ C1] __hrtimer_run_queues+0x4fe/0xc40 [ 195.073465][ C1] ? tick_setup_sched_timer+0x2c0/0x2c0 [ 195.079046][ C1] ? hrtimer_interrupt+0x8d0/0x8d0 [ 195.084189][ C1] ? ktime_get_update_offsets_now+0x3ce/0x3e0 [ 195.090296][ C1] hrtimer_interrupt+0x3bb/0x8d0 [ 195.095288][ C1] __sysvec_apic_timer_interrupt+0x137/0x4a0 [ 195.101301][ C1] sysvec_apic_timer_interrupt+0x9b/0xc0 [ 195.106960][ C1] [ 195.109906][ C1] [ 195.112860][ C1] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 195.118873][ C1] RIP: 0010:lock_acquire+0x1f2/0x3f0 [ 195.124187][ C1] Code: 00 9c 8f 84 24 80 00 00 00 f6 84 24 81 00 00 00 02 0f 85 f6 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 44 3d 00 00 00 00 00 66 43 c7 44 3d 09 00 00 43 c6 44 3d 0b [ 195.143826][ C1] RSP: 0018:ffffc90002f8fa80 EFLAGS: 00000206 [ 195.149921][ C1] RAX: 0000000000000001 RBX: 0000000000000000 RCX: af94dffe86964b00 [ 195.157910][ C1] RDX: 0000000000000000 RSI: ffffffff8a0b2f00 RDI: ffffffff8a59e580 [ 195.165899][ C1] RBP: ffffc90002f8fba0 R08: dffffc0000000000 R09: fffffbfff1ff7c1f [ 195.173925][ C1] R10: fffffbfff1ff7c1f R11: 1ffffffff1ff7c1e R12: ffff88807c12f828 [ 195.181919][ C1] R13: 1ffff920005f1f5c R14: 0000000000000246 R15: dffffc0000000000 [ 195.189932][ C1] ? rcu_is_watching+0x11/0xa0 [ 195.194716][ C1] ? read_lock_is_recursive+0x10/0x10 [ 195.200118][ C1] ? fpu__restore_sig+0x785/0xf50 [ 195.205167][ C1] __might_fault+0xb3/0x110 [ 195.209695][ C1] ? __might_fault+0x90/0x110 [ 195.214393][ C1] _copy_from_user+0x29/0x170 [ 195.219093][ C1] restore_altstack+0x9a/0x360 [ 195.223975][ C1] ? __ia32_sys_sigaltstack+0x60/0x60 [ 195.229375][ C1] ? __might_fault+0xb3/0x110 [ 195.234178][ C1] ? _copy_from_user+0x111/0x170 [ 195.239253][ C1] __ia32_sys_rt_sigreturn+0x660/0x790 [ 195.244745][ C1] ? load_gs_index+0x120/0x120 [ 195.249563][ C1] ? lock_chain_count+0x20/0x20 [ 195.254437][ C1] ? vtime_user_exit+0x2dc/0x400 [ 195.259419][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 195.264650][ C1] do_syscall_64+0x4c/0xa0 [ 195.269272][ C1] ? clear_bhb_loop+0x30/0x80 [ 195.273996][ C1] ? clear_bhb_loop+0x30/0x80 [ 195.278694][ C1] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 195.284615][ C1] RIP: 0033:0x7f1476c74667 [ 195.289050][ C1] Code: 14 25 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 1d 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 [ 195.308674][ C1] RSP: 002b:00007f1476c2a218 EFLAGS: 00000246 [ 195.314762][ C1] RAX: 00000000000000ca RBX: 00007f1476cfd188 RCX: 00007f1476c74669 [ 195.322756][ C1] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f1476cfd188 [ 195.330839][ C1] RBP: 00007f1476cfd180 R08: 0000000000000000 R09: 0000000000000000 [ 195.338852][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000140 [ 195.346853][ C1] R13: 000020000006b000 R14: 0000200000000100 R15: 0000200000000680 [ 195.354864][ C1]