Warning: Permanently added '10.128.1.26' (ED25519) to the list of known hosts. executing program [ 87.080883][ T1197] cfg80211: failed to load regulatory.db [ 185.828379][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 185.835482][ C0] rcu: 1-....: (1 GPs behind) idle=c58c/1/0x4000000000000000 softirq=9977/9978 fqs=2100 [ 185.845795][ C0] rcu: hardirqs softirqs csw/system [ 185.852215][ C0] rcu: number: 13105391 0 0 [ 185.858633][ C0] rcu: cputime: 23371 0 0 ==> 52500(ms) [ 185.866446][ C0] rcu: (detected by 0, t=10505 jiffies, g=7861, q=737 ncpus=2) [ 185.874116][ C0] Sending NMI from CPU 0 to CPUs 1: [ 185.879345][ C1] NMI backtrace for cpu 1 [ 185.879373][ C1] CPU: 1 PID: 5783 Comm: syz-executor264 Not tainted syzkaller #0 [ 185.879386][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 185.879397][ C1] RIP: 0010:__perf_event_header__init_id+0x251/0x480 [ 185.879434][ C1] Code: b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 f1 01 00 00 41 89 2c 24 48 bd 00 00 00 00 00 fc ff df 4c 89 f6 48 83 e6 04 <31> ff e8 f8 35 d9 ff 4c 89 f0 48 83 e0 04 75 07 e8 aa 31 d9 ff eb [ 185.879444][ C1] RSP: 0000:ffffc900046a7550 EFLAGS: 00000046 [ 185.879456][ C1] RAX: ffffffff81adf81b RBX: ffffc900046a7980 RCX: ffff888030149e00 [ 185.879467][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 185.879475][ C1] RBP: dffffc0000000000 R08: dffffc0000000000 R09: 1ffffffff2239aa0 [ 185.879484][ C1] R10: dffffc0000000000 R11: fffffbfff2239aa1 R12: 0000000000000000 [ 185.879494][ C1] R13: dffffc0000000000 R14: 0000000000000010 R15: ffff88807c7d0000 [ 185.879503][ C1] FS: 00005555725143c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 [ 185.879515][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 185.879524][ C1] CR2: 00002000000029c0 CR3: 000000002fe07000 CR4: 00000000003506e0 [ 185.879537][ C1] Call Trace: [ 185.879547][ C1] [ 185.879556][ C1] perf_prepare_sample+0x120/0x1df0 [ 185.879575][ C1] ? read_lock_is_recursive+0x20/0x20 [ 185.879591][ C1] ? perf_callchain+0x220/0x220 [ 185.879610][ C1] perf_event_output_forward+0x187/0x3e0 [ 185.879625][ C1] ? perf_event_output_forward+0xb9/0x3e0 [ 185.879639][ C1] ? perf_prepare_header+0x1e0/0x1e0 [ 185.879657][ C1] ? __irq_work_queue_local+0x118/0x3b0 [ 185.879674][ C1] ? __perf_event_account_interrupt+0x187/0x280 [ 185.879691][ C1] __perf_event_overflow+0x447/0x630 [ 185.879709][ C1] perf_swevent_event+0x319/0x570 [ 185.879726][ C1] ? perf_tp_event+0x1520/0x1520 [ 185.879742][ C1] ? perf_trace_buf_alloc+0x290/0x290 [ 185.879757][ C1] ? llist_add_batch+0x10f/0x1f0 [ 185.879776][ C1] perf_tp_event+0x5f9/0x1520 [ 185.879793][ C1] ? perf_trace_run_bpf_submit+0x1c0/0x1c0 [ 185.879828][ C1] ? perf_trace_run_bpf_submit+0x1c0/0x1c0 [ 185.879845][ C1] perf_trace_run_bpf_submit+0xf4/0x1c0 [ 185.879863][ C1] perf_trace_preemptirq_template+0x269/0x330 [ 185.879883][ C1] ? asm_sysvec_irq_work+0x1a/0x20 [ 185.879912][ C1] ? trace_event_raw_event_preemptirq_template+0x1f0/0x1f0 [ 185.879932][ C1] ? lock_chain_count+0x20/0x20 [ 185.879947][ C1] ? rcu_is_watching+0x15/0xb0 [ 185.879963][ C1] ? asm_sysvec_irq_work+0x1a/0x20 [ 185.879982][ C1] trace_irq_enable+0xbb/0xe0 [ 185.880000][ C1] trace_hardirqs_on+0x18/0x40 [ 185.880016][ C1] asm_sysvec_irq_work+0x1a/0x20 [ 185.880035][ C1] RIP: 0010:preempt_schedule_irq+0xba/0x150 [ 185.880052][ C1] Code: 00 00 43 c6 44 37 04 f8 74 0b 0f 0b 48 f7 03 08 00 00 00 74 6f bf 01 00 00 00 e8 a1 ea cb f6 e8 4c fd fc f6 fb bf 01 00 00 00 f1 b4 ff ff 43 c6 44 37 08 00 48 c7 44 24 40 00 00 00 00 9c 8f [ 185.880062][ C1] RSP: 0000:ffffc900046a7da0 EFLAGS: 00000286 [ 185.880072][ C1] RAX: 2cfd389b784e1e00 RBX: 0000000000000000 RCX: 2cfd389b784e1e00 [ 185.880081][ C1] RDX: dffffc0000000000 RSI: ffffffff8acacbe0 RDI: 0000000000000001 [ 185.880090][ C1] RBP: ffffc900046a7e50 R08: ffffffff8e8b666f R09: 1ffffffff1d16ccd [ 185.880100][ C1] R10: dffffc0000000000 R11: fffffbfff1d16cce R12: 0000000000000000 [ 185.880109][ C1] R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff920008d4fb4 [ 185.880126][ C1] ? preempt_schedule_notrace+0x110/0x110 [ 185.880146][ C1] ? rcu_irq_exit_check_preempt+0xdf/0x210 [ 185.880164][ C1] irqentry_exit+0x67/0x70 [ 185.880181][ C1] asm_sysvec_reschedule_ipi+0x1a/0x20 [ 185.880199][ C1] RIP: 0010:exit_to_user_mode_loop+0x40/0x110 [ 185.880218][ C1] Code: fb eb 1d e8 72 92 14 09 65 48 8b 05 3a d8 8f 7e 4c 8b 30 41 f7 c6 0e 30 02 00 0f 84 c4 00 00 00 e8 a5 c0 19 00 fb 41 f6 c6 08 <74> 05 e8 e9 bd 1c 09 41 f7 c6 00 10 00 00 74 08 48 89 df e8 d8 b1 [ 185.880233][ C1] RSP: 0000:ffffc900046a7f10 EFLAGS: 00000202 [ 185.880244][ C1] RAX: 2cfd389b784e1e00 RBX: ffffc900046a7f58 RCX: 2cfd389b784e1e00 [ 185.880253][ C1] RDX: dffffc0000000000 RSI: ffffffff8acacbe0 RDI: ffffffff8b1c9c20 [ 185.880263][ C1] RBP: 0000000000000000 R08: ffffffff8e8b666f R09: 1ffffffff1d16ccd [ 185.880272][ C1] R10: dffffc0000000000 R11: fffffbfff1d16cce R12: 0000000000000000 [ 185.880281][ C1] R13: 0000000000000000 R14: 0000000000000008 R15: ffff888030149e00 [ 185.880297][ C1] exit_to_user_mode_prepare+0xee/0x180 [ 185.880315][ C1] irqentry_exit_to_user_mode+0x9/0x30 [ 185.880334][ C1] asm_sysvec_irq_work+0x1a/0x20 [ 185.880351][ C1] RIP: 0033:0x7f5bf5c4a749 [ 185.880372][ C1] Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 0f 1f 44 00 00 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 d8 ff ff ff f7 d8 64 89 01 48 [ 185.880381][ C1] RSP: 002b:00007ffe0ec81558 EFLAGS: 00000246 [ 185.880392][ C1] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5bf5c4a749 [ 185.880400][ C1] RDX: 00002000000006c0 RSI: 0000000000005452 RDI: 0000000000000003 [ 185.880408][ C1] RBP: 0000000000000000 R08: 0000000000000006 R09: 0000000000000006 [ 185.880416][ C1] R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000000 [ 185.880423][ C1] R13: 0000000000000000 R14: 00007f5bf5cddc40 R15: 0000000000000002 [ 185.880439][ C1] [ 185.880445][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.099 msecs