[ 76.333760][ T23] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.23' (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 [ 185.741488][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 185.748633][ C1] rcu: 0-....: (0 ticks this GP) idle=bdb/0/0x3 softirq=4831/4831 fqs=2099 [ 185.757787][ C1] (detected by 1, t=10502 jiffies, g=4161, q=362) [ 185.764291][ C1] Sending NMI from CPU 1 to CPUs 0: [ 185.769590][ C0] NMI backtrace for cpu 0 [ 185.769613][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 [ 185.769627][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 [ 185.769642][ C0] RIP: 0010:arch_irq_work_raise+0x7b/0xd0 [ 185.769675][ C0] Code: e8 0b bc 8b e8 66 e5 91 00 48 8b 1d 97 bc 91 0a 48 83 c3 58 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 45 e5 91 00 f6 00 00 00 ff 13 48 c7 c0 e8 0b bc 8b 48 c1 e8 03 42 80 3c 30 [ 185.769686][ C0] RSP: 0018:ffffc90000006e10 EFLAGS: 00000046 [ 185.769698][ C0] RAX: 1ffffffff1778144 RBX: ffffffff8bbc0a20 RCX: ffffffff8bebc480 [ 185.769709][ C0] RDX: 0000000000000100 RSI: 0000000000000008 RDI: ffff8880b9033d70 [ 185.769718][ C0] RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed10172067af [ 185.769727][ C0] R10: ffffed10172067af R11: 1ffff110172067ae R12: 0000000000000000 [ 185.769736][ C0] R13: dffffc0000000001 R14: dffffc0000000000 R15: 0000000000000000 [ 185.769745][ C0] FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 [ 185.769757][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 185.769766][ C0] CR2: 00005555820fada8 CR3: 000000007abba000 CR4: 00000000003506f0 [ 185.769779][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 185.769786][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 185.769795][ C0] Call Trace: [ 185.769801][ C0] [ 185.769815][ C0] irq_work_queue_on+0x11e/0x220 [ 185.769833][ C0] rcu_read_unlock_special+0x379/0x480 [ 185.769849][ C0] ? __rcu_read_unlock+0xd0/0xd0 [ 185.769863][ C0] ? __perf_cgroup_move+0x140/0x140 [ 185.769879][ C0] ? perf_callchain+0x190/0x190 [ 185.769891][ C0] ? rcu_lock_release+0x9/0x20 [ 185.769906][ C0] __rcu_read_unlock+0x78/0xd0 [ 185.769919][ C0] perf_event_output_forward+0x216/0x280 [ 185.769933][ C0] ? perf_get_page_size+0x420/0x420 [ 185.769948][ C0] ? tracing_gen_ctx_irq_test+0xb3/0x130 [ 185.769965][ C0] ? __perf_event_account_interrupt+0x187/0x280 [ 185.769979][ C0] __perf_event_overflow+0x364/0x530 [ 185.769994][ C0] perf_tp_event+0x32c/0xb50 [ 185.770009][ C0] ? perf_trace_run_bpf_submit+0x1c0/0x1c0 [ 185.770023][ C0] ? perf_tp_event+0xa3b/0xb50 [ 185.770054][ C0] perf_trace_run_bpf_submit+0xf3/0x1c0 [ 185.770069][ C0] perf_trace_preemptirq_template+0x2be/0x380 [ 185.770085][ C0] ? irqentry_exit+0x4b/0x70 [ 185.770106][ C0] ? trace_event_raw_event_preemptirq_template+0x270/0x270 [ 185.770121][ C0] ? __irq_exit_rcu+0x13b/0x220 [ 185.770134][ C0] ? irq_exit_rcu+0x20/0x20 [ 185.770147][ C0] ? irqentry_exit+0x4b/0x70 [ 185.770161][ C0] trace_hardirqs_on_prepare+0x193/0x1f0 [ 185.770176][ C0] irqentry_exit+0x4b/0x70 [ 185.770189][ C0] asm_sysvec_irq_work+0x16/0x20 [ 185.770204][ C0] RIP: 0010:rcu_read_unlock_special+0x84/0x480 [ 185.770217][ C0] 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 [ 185.770227][ C0] RSP: 0018:ffffc900000075c0 EFLAGS: 00000206 [ 185.770237][ C0] RAX: bcf397fed4e0a400 RBX: 1ffff92000000ebc RCX: bcf397fed4e0a400 [ 185.770247][ C0] RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: ffffffff8a59e800 [ 185.770257][ C0] RBP: ffffc900000076a0 R08: dffffc0000000000 R09: ffffed1017207662 [ 185.770266][ C0] R10: ffffed1017207662 R11: 1ffff11017207661 R12: ffffffff8c120c00 [ 185.770281][ C0] R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 [ 185.770298][ C0] ? __rcu_read_unlock+0xd0/0xd0 [ 185.770311][ C0] ? read_lock_is_recursive+0x10/0x10 [ 185.770331][ C0] __rcu_read_unlock+0x78/0xd0 [ 185.770344][ C0] is_bpf_text_address+0x24f/0x270 [ 185.770360][ C0] ? start_kernel+0x486/0x530 [ 185.770372][ C0] __kernel_text_address+0x9a/0x100 [ 185.770389][ C0] unwind_get_return_address+0x49/0x80 [ 185.770404][ C0] ? stack_trace_save+0xe0/0xe0 [ 185.770416][ C0] arch_stack_walk+0xf2/0x140 [ 185.770433][ C0] ? start_kernel+0x486/0x530 [ 185.770445][ C0] ? kmem_cache_free+0x8f/0x210 [ 185.770457][ C0] stack_trace_save+0x98/0xe0 [ 185.770469][ C0] ? stack_trace_snprint+0xf0/0xf0 [ 185.770481][ C0] ? __lock_acquire+0x12d9/0x7c60 [ 185.770496][ C0] ? perf_trace_run_bpf_submit+0xf3/0x1c0 [ 185.770510][ C0] ? memset+0x1e/0x40 [ 185.770524][ C0] kasan_set_track+0x4b/0x70 [ 185.770537][ C0] ? kasan_set_track+0x4b/0x70 [ 185.770548][ C0] ? kasan_set_free_info+0x1f/0x40 [ 185.770561][ C0] ? ____kasan_slab_free+0xd5/0x110 [ 185.770574][ C0] ? slab_free_freelist_hook+0xea/0x170 [ 185.770585][ C0] ? kmem_cache_free+0x8f/0x210 [ 185.770596][ C0] ? rcu_core+0x962/0x15d0 [ 185.770607][ C0] ? handle_softirqs+0x328/0x820 [ 185.770619][ C0] ? __irq_exit_rcu+0x12f/0x220 [ 185.770630][ C0] ? irq_exit_rcu+0x5/0x20 [ 185.770641][ C0] ? sysvec_apic_timer_interrupt+0xa0/0xc0 [ 185.770654][ C0] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 185.770667][ C0] ? default_idle+0xb/0x10 [ 185.770678][ C0] ? default_idle_call+0x81/0xc0 [ 185.770690][ C0] ? do_idle+0x21b/0x5b0 [ 185.770702][ C0] ? cpu_startup_entry+0x14/0x20 [ 185.770733][ C0] kasan_set_free_info+0x1f/0x40 [ 185.770747][ C0] ____kasan_slab_free+0xd5/0x110 [ 185.770761][ C0] slab_free_freelist_hook+0xea/0x170 [ 185.770774][ C0] ? rcu_core+0x962/0x15d0 [ 185.770787][ C0] kmem_cache_free+0x8f/0x210 [ 185.770802][ C0] rcu_core+0x962/0x15d0 [ 185.770821][ C0] ? local_bh_disable+0x20/0x20 [ 185.770834][ C0] ? __lock_acquire+0x7c60/0x7c60 [ 185.770854][ C0] ? rebalance_domains+0xa56/0xb80 [ 185.770873][ C0] handle_softirqs+0x328/0x820 [ 185.770887][ C0] ? __irq_exit_rcu+0x12f/0x220 [ 185.770901][ C0] ? do_softirq+0x200/0x200 [ 185.770915][ C0] ? irqtime_account_irq+0xb2/0x1b0 [ 185.770929][ C0] __irq_exit_rcu+0x12f/0x220 [ 185.770941][ C0] ? irq_exit_rcu+0x20/0x20 [ 185.770958][ C0] irq_exit_rcu+0x5/0x20 [ 185.770968][ C0] sysvec_apic_timer_interrupt+0xa0/0xc0 [ 185.770983][ C0] [ 185.770986][ C0] [ 185.770991][ C0] asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 185.771004][ C0] RIP: 0010:default_idle+0xb/0x10 [ 185.771017][ C0] Code: bf 48 89 df e8 c6 03 11 f8 eb b5 e8 ef b5 f6 ff 00 00 cc cc 00 00 cc cc 00 00 cc cc 00 00 cc 66 90 0f 00 2d 17 93 5a 00 fb f4 0f 1f 40 00 41 57 41 56 53 49 be 00 00 00 00 00 fc ff df 65 48 [ 185.771026][ C0] RSP: 0018:ffffffff8be07dc8 EFLAGS: 000002c6 [ 185.771036][ C0] RAX: bcf397fed4e0a400 RBX: ffffffff8bebc480 RCX: bcf397fed4e0a400 [ 185.771046][ C0] RDX: 0000000000000001 RSI: ffffffff8a0b1be0 RDI: ffffffff8a59e800 [ 185.771055][ C0] RBP: ffffffff8be07ef8 R08: dffffc0000000000 R09: ffffed1017207662 [ 185.771065][ C0] R10: ffffed1017207662 R11: 1ffff11017207661 R12: ffffffff8d6935a8 [ 185.771074][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff17d7890 [ 185.771090][ C0] default_idle_call+0x81/0xc0 [ 185.771102][ C0] do_idle+0x21b/0x5b0 [ 185.771117][ C0] ? idle_inject_timer_fn+0x60/0x60 [ 185.771131][ C0] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 185.771150][ C0] cpu_startup_entry+0x14/0x20 [ 185.771163][ C0] ? time_init+0x40/0x40 [ 185.771176][ C0] start_kernel+0x486/0x530 [ 185.771191][ C0] secondary_startup_64_no_verify+0xb1/0xbb [ 185.771213][ C0] [ 185.771219][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.628 msecs [ 189.011563][ T23] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-... } 10828 jiffies s: 525 root: 0x1/. [ 189.023865][ T23] rcu: blocking rcu_node structures (internal RCU debug): [ 189.030992][ T23] Task dump for CPU 0: [ 189.035099][ T23] task:swapper/0 state:R running task stack:27880 pid: 0 ppid: 0 flags:0x00004008 [ 189.045919][ T23] Call Trace: [ 189.049195][ T23] [ 189.052154][ T23] ? perf_trace_run_bpf_submit+0xf3/0x1c0 [ 189.057881][ T23] ? rcu_is_watching+0x11/0xa0 [ 189.062701][ T23] ? trace_hardirqs_off_finish+0xca/0x1f0 [ 189.068419][ T23] ? sysvec_apic_timer_interrupt+0x80/0xc0 [ 189.074250][ T23] ? asm_sysvec_apic_timer_interrupt+0x16/0x20 [ 189.080428][ T23] ? default_idle+0xb/0x10 [ 189.084905][ T23] ? default_idle_call+0x81/0xc0 [ 189.089857][ T23] ? do_idle+0x21b/0x5b0 [ 189.094137][ T23] ? idle_inject_timer_fn+0x60/0x60 [ 189.099341][ T23] ? _raw_spin_unlock_irqrestore+0xaa/0x100 [ 189.105278][ T23] ? cpu_startup_entry+0x14/0x20 [ 189.110218][ T23] ? time_init+0x40/0x40 [ 189.114507][ T23] ? start_kernel+0x486/0x530 [ 189.119183][ T23] ? secondary_startup_64_no_verify+0xb1/0xbb [ 189.125287][ T23]