Warning: Permanently added '10.128.0.50' (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 [ 86.511145][ T1108] cfg80211: failed to load regulatory.db [ 170.328557][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 170.335622][ C1] rcu: 0-....: (1 GPs behind) idle=d23/1/0x4000000000000002 softirq=6037/6038 fqs=5250 [ 170.345941][ C1] (detected by 1, t=10502 jiffies, g=5897, q=638) [ 170.352484][ C1] Sending NMI from CPU 1 to CPUs 0: [ 170.357730][ C0] NMI backtrace for cpu 0 [ 170.357758][ C0] CPU: 0 PID: 4237 Comm: syz-executor313 Not tainted syzkaller #0 [ 170.357774][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 170.357790][ C0] RIP: 0010:__lock_acquire+0x9aa/0x7b50 [ 170.357826][ C0] Code: 04 00 84 c0 0f 85 e6 00 00 00 41 0f b6 06 84 c0 74 0e 41 0f b6 cd 44 0f b6 e8 38 c1 44 0f 42 e9 48 8b 44 24 60 42 0f b6 04 00 <84> c0 0f 85 e3 00 00 00 48 ff c3 48 8b 44 24 18 48 63 00 49 83 c4 [ 170.357839][ C0] RSP: 0018:ffffc90002f5ef00 EFLAGS: 00000002 [ 170.357853][ C0] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000003 [ 170.357863][ C0] RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff901ef0c0 [ 170.357873][ C0] RBP: ffffc90002f5f130 R08: dffffc0000000000 R09: 1ffffffff203de18 [ 170.357885][ C0] R10: dffffc0000000000 R11: fffffbfff203de19 R12: ffff88807b24e478 [ 170.357896][ C0] R13: 0000000000000002 R14: ffffffff8fb79078 R15: ffff88807b24e478 [ 170.357907][ C0] FS: 0000555556e803c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 [ 170.357921][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 170.357932][ C0] CR2: 0000555556e80690 CR3: 000000007bd33000 CR4: 00000000003506f0 [ 170.357946][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 170.357955][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 170.357964][ C0] Call Trace: [ 170.357971][ C0] [ 170.357980][ C0] ? verify_lock_unused+0x140/0x140 [ 170.358009][ C0] ? __lock_acquire+0x1305/0x7b50 [ 170.358042][ C0] ? verify_lock_unused+0x140/0x140 [ 170.358073][ C0] ? rcu_lock_release+0x5/0x40 [ 170.358098][ C0] ? __lock_acquire+0x7b50/0x7b50 [ 170.358125][ C0] ? llist_add_batch+0x85/0xa0 [ 170.358153][ C0] lock_acquire+0x19e/0x400 [ 170.358170][ C0] ? rcu_lock_acquire+0x9/0x30 [ 170.358190][ C0] ? rcu_lock_release+0x9/0x20 [ 170.358206][ C0] ? read_lock_is_recursive+0x10/0x10 [ 170.358225][ C0] ? __lock_acquire+0x7b50/0x7b50 [ 170.358244][ C0] ? rcu_lock_release+0x9/0x20 [ 170.358263][ C0] rcu_lock_acquire+0x2a/0x30 [ 170.358279][ C0] ? rcu_lock_acquire+0x9/0x30 [ 170.358295][ C0] perf_event_output_forward+0xbc/0x2e0 [ 170.358313][ C0] ? perf_get_page_size+0x430/0x430 [ 170.358330][ C0] ? perf_event_output_forward+0x261/0x2e0 [ 170.358347][ C0] ? perf_get_page_size+0x430/0x430 [ 170.358364][ C0] ? __perf_event_account_interrupt+0x187/0x280 [ 170.358382][ C0] __perf_event_overflow+0x35f/0x550 [ 170.358400][ C0] perf_swevent_event+0x4b8/0x540 [ 170.358419][ C0] perf_tp_event+0x324/0xbe0 [ 170.358436][ C0] ? perf_trace_run_bpf_submit+0x1c0/0x1c0 [ 170.358453][ C0] ? perf_tp_event+0xa7e/0xbe0 [ 170.358483][ C0] ? update_load_avg+0xc64/0x11c0 [ 170.358503][ C0] perf_trace_run_bpf_submit+0xf3/0x1c0 [ 170.358522][ C0] perf_trace_preemptirq_template+0x2aa/0x360 [ 170.358541][ C0] ? asm_sysvec_irq_work+0x16/0x20 [ 170.358564][ C0] ? trace_event_raw_event_preemptirq_template+0x290/0x290 [ 170.358583][ C0] ? lockdep_hardirqs_on_prepare+0x448/0x7c0 [ 170.358603][ C0] ? lock_chain_count+0x20/0x20 [ 170.358622][ C0] ? asm_sysvec_irq_work+0x16/0x20 [ 170.358639][ C0] trace_irq_enable_rcuidle+0x108/0x180 [ 170.358658][ C0] trace_hardirqs_on+0x57/0x80 [ 170.358674][ C0] asm_sysvec_irq_work+0x16/0x20 [ 170.358691][ C0] RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 [ 170.358709][ C0] Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 f2 0f 9d 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08 [ 170.358722][ C0] RSP: 0018:ffffc90002f5f920 EFLAGS: 00000206 [ 170.358734][ C0] RAX: 661a127530520f00 RBX: 1ffff920005ebf28 RCX: 661a127530520f00 [ 170.358746][ C0] RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4540 [ 170.358758][ C0] RBP: ffffc90002f5f9f0 R08: ffffffff901ef0c7 R09: 1ffffffff203de18 [ 170.358769][ C0] R10: dffffc0000000000 R11: fffffbfff203de19 R12: ffffffff8c323400 [ 170.358781][ C0] R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 [ 170.358799][ C0] ? __rcu_read_unlock+0xd0/0xd0 [ 170.358815][ C0] ? __lock_acquire+0x7b50/0x7b50 [ 170.358837][ C0] __rcu_read_unlock+0x78/0xd0 [ 170.358852][ C0] __unlock_page_memcg+0xea/0x100 [ 170.358869][ C0] wp_page_copy+0xf34/0x2090 [ 170.358891][ C0] ? insert_page_into_pte_locked+0x470/0x470 [ 170.358910][ C0] ? _raw_spin_unlock+0x24/0x40 [ 170.358924][ C0] ? do_wp_page+0x965/0xb30 [ 170.358942][ C0] handle_mm_fault+0x1fbd/0x4440 [ 170.358965][ C0] ? get_page+0xe0/0xe0 [ 170.358983][ C0] ? vmacache_find+0x4f0/0x590 [ 170.358998][ C0] ? vmacache_update+0xa0/0x100 [ 170.359031][ C0] ? find_vma+0x1df/0x230 [ 170.359047][ C0] do_user_addr_fault+0x494/0xc90 [ 170.359071][ C0] exc_page_fault+0x60/0x100 [ 170.359090][ C0] asm_exc_page_fault+0x22/0x30 [ 170.359105][ C0] RIP: 0010:__put_user_nocheck_4+0x3/0x11 [ 170.359121][ C0] Code: 00 00 48 39 d9 73 54 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 90 90 90 90 90 48 bb fd ef ff ff ff 7f 00 00 48 39 d9 73 34 0f 01 cb <89> 01 31 c9 0f 01 ca c3 90 90 90 90 90 90 48 bb f9 ef ff ff ff 7f [ 170.359139][ C0] RSP: 0018:ffffc90002f5ff28 EFLAGS: 00050297 [ 170.359151][ C0] RAX: 000000000000108d RBX: 00007fffffffeffd RCX: 0000555556e80690 [ 170.359162][ C0] RDX: 0000000000000000 RSI: ffffffff8a2b3e80 RDI: ffffffff8a7a4540 [ 170.359172][ C0] RBP: 0000000000000000 R08: ffffffff8d8b122f R09: 1ffffffff1b16245 [ 170.359182][ C0] R10: dffffc0000000000 R11: fffffbfff1b16246 R12: 1ffff1100f649bfc [ 170.359194][ C0] R13: 0000000000000000 R14: 0000555556e80690 R15: dffffc0000000000 [ 170.359210][ C0] schedule_tail+0x91/0xb0 [ 170.359228][ C0] ret_from_fork+0x8/0x30 [ 170.359250][ C0] [ 170.359256][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.525 msecs [ 173.548637][ T21] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-... } 10824 jiffies s: 505 root: 0x1/. [ 173.562196][ T21] rcu: blocking rcu_node structures (internal RCU debug): [ 173.569693][ T21] Task dump for CPU 0: [ 173.573819][ T21] task:syz-executor313 state:R running task stack:27152 pid: 4237 ppid: 4195 flags:0x0000400e [ 173.584752][ T21] Call Trace: [ 173.588056][ T21] [ 173.591153][ T21] ? schedule_tail+0x91/0xb0 [ 173.595778][ T21] ? ret_from_fork+0x8/0x30 [ 173.600393][ T21]