[ 81.299399][ T130] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.15' (ED25519) to the list of known hosts. executing program executing program executing program executing program [ 187.407674][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 187.414815][ C1] (detected by 1, t=10502 jiffies, g=7401, q=68 ncpus=2) [ 187.421965][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10503 (4294955892-4294945389), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 187.435352][ C1] rcu: rcu_preempt kthread starved for 10504 jiffies! g7401 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 187.446485][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 187.456489][ C1] rcu: RCU grace-period kthread stack dump: [ 187.462405][ C1] task:rcu_preempt state:R running task stack:28112 pid:16 ppid:2 flags:0x00004000 [ 187.473249][ C1] Call Trace: [ 187.476564][ C1] [ 187.479529][ C1] __schedule+0x11d1/0x40e0 [ 187.484106][ C1] ? _raw_spin_unlock_irqrestore+0x82/0x120 [ 187.490061][ C1] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 187.496005][ C1] ? __sched_text_start+0x8/0x8 [ 187.500890][ C1] ? __mod_timer+0x91e/0xd00 [ 187.505545][ C1] schedule+0xb9/0x180 [ 187.509650][ C1] schedule_timeout+0x184/0x2d0 [ 187.514554][ C1] ? console_conditional_schedule+0x40/0x40 [ 187.520478][ C1] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 187.526495][ C1] ? update_process_times+0x1b0/0x1b0 [ 187.531911][ C1] ? prepare_to_swait_event+0x335/0x350 [ 187.537530][ C1] rcu_gp_fqs_loop+0x303/0x1340 [ 187.542429][ C1] ? rcu_gp_kthread+0x3b0/0x3b0 [ 187.547328][ C1] ? lockdep_hardirqs_on_prepare+0x409/0x770 [ 187.553349][ C1] ? rcu_gp_init+0x14e0/0x14e0 [ 187.558156][ C1] ? rcu_gp_cleanup+0xb41/0xc90 [ 187.563048][ C1] ? _raw_spin_unlock_irq+0x1f/0x40 [ 187.568283][ C1] ? lockdep_hardirqs_on+0x94/0x140 [ 187.573532][ C1] rcu_gp_kthread+0x99/0x3b0 [ 187.578156][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 187.583317][ C1] ? _raw_spin_unlock_irqrestore+0xc1/0x120 [ 187.589260][ C1] ? __kthread_parkme+0x162/0x1c0 [ 187.594345][ C1] kthread+0x29d/0x330 [ 187.598446][ C1] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 187.603596][ C1] ? kthread_blkcg+0xd0/0xd0 [ 187.608230][ C1] ret_from_fork+0x1f/0x30 [ 187.612700][ C1] [ 187.615761][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 187.622116][ C1] Sending NMI from CPU 1 to CPUs 0: [ 187.627396][ C0] NMI backtrace for cpu 0 [ 187.627415][ C0] CPU: 0 PID: 4301 Comm: syz-executor143 Not tainted syzkaller #0 [ 187.627431][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 187.627439][ C0] RIP: 0010:should_fail_ex+0x5/0x4d0 [ 187.627459][ C0] Code: ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 62 ff ff ff 48 89 df e8 2a 48 9e fd e9 55 ff ff ff 0f 1f 44 00 00 55 41 57 41 56 <41> 55 41 54 53 48 83 ec 18 89 14 24 49 89 f6 48 89 fb 49 bc 00 00 [ 187.627471][ C0] RSP: 0018:ffffc90003fc7cb0 EFLAGS: 00000246 [ 187.627485][ C0] RAX: ffffffff84354265 RBX: 00000000000000c0 RCX: ffff88801e2d5a00 [ 187.627497][ C0] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffffffff8d1c7160 [ 187.627507][ C0] RBP: ffffc90003fc7f10 R08: ffffffff8e2029ef R09: 1ffffffff1c4053d [ 187.627518][ C0] R10: dffffc0000000000 R11: fffffbfff1c4053e R12: 1ffff920007f8fa8 [ 187.627530][ C0] R13: dffffc0000000000 R14: ffffc90003fc7d60 R15: 00007f8a37f20be8 [ 187.627541][ C0] FS: 00007f8a37f216c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 [ 187.627555][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 187.627566][ C0] CR2: 0000200000000058 CR3: 0000000072ef3000 CR4: 00000000003506f0 [ 187.627579][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 187.627588][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 187.627598][ C0] Call Trace: [ 187.627604][ C0] [ 187.627610][ C0] _copy_from_user+0x2c/0x170 [ 187.627638][ C0] __ia32_sys_rt_sigreturn+0x21d/0x760 [ 187.627662][ C0] ? load_gs_index+0x130/0x130 [ 187.627692][ C0] ? lock_chain_count+0x20/0x20 [ 187.627717][ C0] ? lockdep_hardirqs_on+0x94/0x140 [ 187.627738][ C0] do_syscall_64+0x4c/0xa0 [ 187.627754][ C0] ? clear_bhb_loop+0x60/0xb0 [ 187.627777][ C0] ? clear_bhb_loop+0x60/0xb0 [ 187.627808][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 187.627832][ C0] RIP: 0033:0x7f8a37f2f909 [ 187.627848][ C0] Code: af 01 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 c7 c0 0f 00 00 00 0f 05 <0f> 1f 80 00 00 00 00 48 81 ec 48 01 00 00 49 89 d0 64 48 8b 0c 25 [ 187.627860][ C0] RSP: 002b:00007f8a37f20bc0 EFLAGS: 00000202 ORIG_RAX: 000000000000000f [ 187.627875][ C0] RAX: ffffffffffffffda RBX: 00007f8a37ff3b48 RCX: 00007f8a37f2f909 [ 187.627886][ C0] RDX: 00007f8a37f20bc0 RSI: 00007f8a37f20cf0 RDI: 0000000000000021 [ 187.627896][ C0] RBP: 00007f8a37ff3b40 R08: 00007f8a37f21cdc R09: 00007f8a37f21cdc [ 187.627907][ C0] R10: 0000000000000000 R11: 0000000000000202 R12: 00007f8a37ff3b4c [ 187.627917][ C0] R13: 0000000000000000 R14: 00007ffe3fafb690 R15: 00007ffe3fafb778 [ 187.627934][ C0]