Warning: Permanently added '10.128.1.10' (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 executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 240.870785][ T55] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 13366 jiffies s: 601 root: 0x1/. [ 240.885343][ T55] rcu: blocking rcu_node structures (internal RCU debug): [ 240.894371][ T55] Sending NMI from CPU 1 to CPUs 0: [ 240.899664][ C0] NMI backtrace for cpu 0 [ 240.899691][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.6.100-syzkaller #0 [ 240.899708][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 240.899720][ C0] RIP: 0010:__sanitizer_cov_trace_switch+0x81/0x120 [ 240.899769][ C0] Code: 00 00 00 b9 01 00 00 00 48 85 c0 0f 84 ae 00 00 00 41 57 41 56 41 54 53 48 8b 54 24 20 65 4c 8b 05 44 1f 7e 7e 45 31 c9 eb 08 <49> ff c1 4c 39 c8 74 77 4e 8b 54 ce 10 65 44 8b 1d 32 1f 7e 7e 41 [ 240.899782][ C0] RSP: 0018:ffffc90000007428 EFLAGS: 00000246 [ 240.899797][ C0] RAX: 0000000000000020 RBX: 0000000000000004 RCX: 0000000000000005 [ 240.899807][ C0] RDX: ffffffff81876015 RSI: ffffffff8cd79100 RDI: 0000000000000004 [ 240.899818][ C0] RBP: 0000000000000ac8 R08: ffffffff8ca93380 R09: 0000000000000002 [ 240.899834][ C0] R10: 0000000000000002 R11: 0000000000000100 R12: dffffc0000000000 [ 240.899845][ C0] R13: f800000000000000 R14: ffff88801824145c R15: 00000000000a3b64 [ 240.899859][ C0] FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 [ 240.899875][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 240.899888][ C0] CR2: 00002000000018c0 CR3: 000000007afa8000 CR4: 00000000003506f0 [ 240.899905][ C0] Call Trace: [ 240.899912][ C0] [ 240.899932][ C0] rb_event_length+0x45/0x3f0 [ 240.899959][ C0] check_buffer+0x542/0x950 [ 240.900010][ C0] __rb_reserve_next+0x511/0xd50 [ 240.900088][ C0] ring_buffer_lock_reserve+0xae1/0xed0 [ 240.900115][ C0] ? __lock_acquire+0x7c80/0x7c80 [ 240.900151][ C0] ? mark_lock+0x94/0x320 [ 240.900203][ C0] trace_event_buffer_lock_reserve+0x1d0/0x6e0 [ 240.900246][ C0] trace_event_buffer_reserve+0x29b/0x3c0 [ 240.900276][ C0] ? trace_event_ignore_this_pid+0x130/0x130 [ 240.900320][ C0] trace_event_raw_event_bpf_trace_printk+0x101/0x210 [ 240.900349][ C0] ? __probestub_bpf_trace_printk+0x10/0x10 [ 240.900386][ C0] ? __asan_memcpy+0x40/0x70 [ 240.900429][ C0] trace_bpf_trace_printk+0x142/0x1a0 [ 240.900453][ C0] bpf_trace_printk+0x11f/0x190 [ 240.900487][ C0] ? bpf_probe_write_user+0xe0/0xe0 [ 240.900520][ C0] ? bpf_trace_run1+0xd6/0x3b0 [ 240.900542][ C0] ? trace_call_bpf+0xc3/0x690 [ 240.900570][ C0] ? trace_call_bpf+0x5ba/0x690 [ 240.900613][ C0] bpf_prog_0605f9f479290f07+0x37/0x3b [ 240.900645][ C0] bpf_trace_run1+0x1c9/0x3b0 [ 240.900664][ C0] ? bpf_trace_run1+0xd6/0x3b0 [ 240.900683][ C0] ? bpf_put_raw_tracepoint+0x60/0x60 [ 240.900703][ C0] ? lock_chain_count+0x20/0x20 [ 240.900722][ C0] ? __bpf_trace_rcu_utilization+0x95/0xe0 [ 240.900738][ C0] ? perf_trace_rcu_stall_warning+0x2d0/0x2d0 [ 240.900760][ C0] ? perf_trace_rcu_stall_warning+0x2d0/0x2d0 [ 240.900781][ C0] __bpf_trace_rcu_utilization+0xa2/0xe0 [ 240.900801][ C0] ? perf_trace_rcu_stall_warning+0x2d0/0x2d0 [ 240.900823][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x760 [ 240.900861][ C0] __traceiter_rcu_utilization+0x70/0xa0 [ 240.900885][ C0] trace_rcu_utilization+0x179/0x1a0 [ 240.900911][ C0] rcu_core+0x1341/0x1720 [ 240.900946][ C0] ? try_to_wake_up+0x2d2/0x10b0 [ 240.900983][ C0] ? __lock_acquire+0x7c80/0x7c80 [ 240.901004][ C0] ? __rwlock_init+0x150/0x150 [ 240.901028][ C0] ? rcu_cpu_kthread_park+0x90/0x90 [ 240.901055][ C0] ? kvm_sched_clock_read+0x11/0x20 [ 240.901082][ C0] ? sched_clock+0x3f/0x60 [ 240.901101][ C0] ? sched_clock_cpu+0x75/0x430 [ 240.901119][ C0] ? _raw_spin_unlock+0x40/0x40 [ 240.901156][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x760 [ 240.901183][ C0] ? lock_chain_count+0x20/0x20 [ 240.901199][ C0] ? try_to_wake_up+0x6f8/0x10b0 [ 240.901248][ C0] handle_softirqs+0x280/0x820 [ 240.901274][ C0] ? __irq_exit_rcu+0xc7/0x190 [ 240.901304][ C0] ? do_softirq+0x180/0x180 [ 240.901319][ C0] ? irq_work_single+0x199/0x230 [ 240.901347][ C0] ? irqtime_account_irq+0xb6/0x1c0 [ 240.901377][ C0] __irq_exit_rcu+0xc7/0x190 [ 240.901395][ C0] ? irq_exit_rcu+0x20/0x20 [ 240.901421][ C0] ? rcu_is_watching+0x15/0xb0 [ 240.901449][ C0] irq_exit_rcu+0x9/0x20 [ 240.901463][ C0] sysvec_irq_work+0xa1/0xc0 [ 240.901485][ C0] [ 240.901489][ C0] [ 240.901498][ C0] asm_sysvec_irq_work+0x1a/0x20 [ 240.901513][ C0] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 240.901536][ C0] Code: cc cc cc cc cc cc cc f3 0f 1e fa 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 66 90 0f 00 2d e3 16 3b 00 f3 0f 1e fa fb f4 cc cc cc cc cc cc cc cc cc cc cc cc 66 0f 1f 00 55 41 57 41 56 [ 240.901549][ C0] RSP: 0018:ffffffff8ca07d80 EFLAGS: 000002c6 [ 240.901562][ C0] RAX: accd9c956ed42a00 RBX: ffffffff81619a5b RCX: accd9c956ed42a00 [ 240.901574][ C0] RDX: 0000000000000001 RSI: ffffffff8aaaba40 RDI: ffffffff8afc6700 [ 240.901585][ C0] RBP: ffffffff8ca07eb8 R08: ffff8880b8e36d4b R09: 1ffff110171c6da9 [ 240.901597][ C0] R10: dffffc0000000000 R11: ffffed10171c6daa R12: ffffffff8e4a7da8 [ 240.901608][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff1952670 [ 240.901626][ C0] ? do_idle+0x1eb/0x510 [ 240.901667][ C0] default_idle+0x13/0x20 [ 240.901690][ C0] default_idle_call+0x6c/0xa0 [ 240.901715][ C0] do_idle+0x1eb/0x510 [ 240.901748][ C0] ? idle_inject_timer_fn+0x60/0x60 [ 240.901770][ C0] ? asm_sysvec_call_function_single+0x1a/0x20 [ 240.901829][ C0] cpu_startup_entry+0x43/0x60 [ 240.901850][ C0] rest_init+0x2e2/0x300 [ 240.901875][ C0] ? time_init+0x40/0x40 [ 240.901900][ C0] arch_call_rest_init+0xe/0x10 [ 240.901925][ C0] start_kernel+0x459/0x4e0 [ 240.901956][ C0] x86_64_start_reservations+0x2a/0x30 [ 240.901986][ C0] x86_64_start_kernel+0x60/0x60 [ 240.902006][ C0] secondary_startup_64_no_verify+0x179/0x17b [ 240.902062][ C0] [ 240.902070][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.405 msecs