Warning: Permanently added '10.128.1.111' (ED25519) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program [ 235.501977][ T786] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 13158 jiffies s: 525 root: 0x2/. [ 235.514911][ T786] rcu: blocking rcu_node structures (internal RCU debug): [ 235.522751][ T786] Sending NMI from CPU 0 to CPUs 1: [ 235.528001][ C1] NMI backtrace for cpu 1 [ 235.528025][ C1] CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.6.100-syzkaller #0 [ 235.528040][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 235.528052][ C1] RIP: 0010:__sanitizer_cov_trace_switch+0x108/0x120 [ 235.528096][ C1] Code: 28 4d 39 fc 77 9d 49 ff c6 4d 89 33 49 89 4c 1b 08 4d 89 54 1b 10 49 89 7c 1b 18 49 89 54 1b 20 eb 81 5b 41 5c 41 5e 41 5f c3 05 00 00 00 48 85 c0 0f 85 52 ff ff ff c3 66 0f 1f 84 00 00 00 [ 235.528109][ C1] RSP: 0018:ffffc900001f0470 EFLAGS: 00000246 [ 235.528122][ C1] RAX: 0000000000000020 RBX: 00000036d64e017b RCX: 0000000000000003 [ 235.528132][ C1] RDX: 0000000000000100 RSI: ffffffff8cd797a0 RDI: 0000000000000004 [ 235.528142][ C1] RBP: 0000000000000004 R08: ffff88801b273c00 R09: 0000000000000020 [ 235.528151][ C1] R10: 000000000000001f R11: 0000000000000100 R12: ffff88801ca7d5d8 [ 235.528161][ C1] R13: f800000000000000 R14: 00000000000005c8 R15: 00000000000c6ca4 [ 235.528171][ C1] FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 [ 235.528183][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 235.528194][ C1] CR2: 0000555571b1aca8 CR3: 000000007ef4c000 CR4: 00000000003506e0 [ 235.528207][ C1] Call Trace: [ 235.528213][ C1] [ 235.528221][ C1] check_buffer+0x24d/0x950 [ 235.528243][ C1] __rb_reserve_next+0x511/0xd50 [ 235.528270][ C1] ring_buffer_lock_reserve+0xae1/0xed0 [ 235.528290][ C1] ? mark_lock+0x94/0x320 [ 235.528311][ C1] trace_event_buffer_lock_reserve+0x1d0/0x6e0 [ 235.528334][ C1] trace_event_buffer_reserve+0x29b/0x3c0 [ 235.528350][ C1] ? trace_event_ignore_this_pid+0x130/0x130 [ 235.528370][ C1] trace_event_raw_event_bpf_trace_printk+0x101/0x210 [ 235.528392][ C1] ? __probestub_bpf_trace_printk+0x10/0x10 [ 235.528414][ C1] ? __asan_memcpy+0x40/0x70 [ 235.528437][ C1] trace_bpf_trace_printk+0x142/0x1a0 [ 235.528454][ C1] bpf_trace_printk+0x11f/0x190 [ 235.528475][ C1] ? bpf_probe_write_user+0xe0/0xe0 [ 235.528499][ C1] ? __lock_acquire+0x1334/0x7c80 [ 235.528520][ C1] bpf_prog_0605f9f479290f07+0x37/0x3b [ 235.528540][ C1] bpf_trace_run1+0x1c9/0x3b0 [ 235.528554][ C1] ? bpf_trace_run1+0xd6/0x3b0 [ 235.528568][ C1] ? bpf_put_raw_tracepoint+0x60/0x60 [ 235.528590][ C1] ? __bpf_trace_rcu_utilization+0x95/0xe0 [ 235.528604][ C1] ? perf_trace_rcu_stall_warning+0x2d0/0x2d0 [ 235.528620][ C1] ? perf_trace_rcu_stall_warning+0x2d0/0x2d0 [ 235.528635][ C1] __bpf_trace_rcu_utilization+0xa2/0xe0 [ 235.528650][ C1] ? perf_trace_rcu_stall_warning+0x2d0/0x2d0 [ 235.528665][ C1] ? trace_call_bpf+0xc3/0x690 [ 235.528685][ C1] ? __lock_acquire+0x7c80/0x7c80 [ 235.528703][ C1] __traceiter_rcu_utilization+0x70/0xa0 [ 235.528720][ C1] trace_rcu_utilization+0x179/0x1a0 [ 235.528739][ C1] rcu_core+0x12d/0x1720 [ 235.528757][ C1] ? try_to_wake_up+0x2d2/0x10b0 [ 235.528779][ C1] ? __lock_acquire+0x7c80/0x7c80 [ 235.528794][ C1] ? __rwlock_init+0x150/0x150 [ 235.528811][ C1] ? rcu_cpu_kthread_park+0x90/0x90 [ 235.528827][ C1] ? kvm_sched_clock_read+0x11/0x20 [ 235.528850][ C1] ? sched_clock+0x3f/0x60 [ 235.528865][ C1] ? sched_clock_cpu+0x75/0x430 [ 235.528878][ C1] ? _raw_spin_unlock+0x40/0x40 [ 235.528901][ C1] ? lockdep_hardirqs_on_prepare+0x400/0x760 [ 235.528918][ C1] ? lock_chain_count+0x20/0x20 [ 235.528932][ C1] ? try_to_wake_up+0x6f8/0x10b0 [ 235.528957][ C1] handle_softirqs+0x280/0x820 [ 235.528973][ C1] ? __irq_exit_rcu+0xc7/0x190 [ 235.528990][ C1] ? do_softirq+0x180/0x180 [ 235.529002][ C1] ? irq_work_single+0x199/0x230 [ 235.529020][ C1] ? irqtime_account_irq+0xb6/0x1c0 [ 235.529040][ C1] __irq_exit_rcu+0xc7/0x190 [ 235.529053][ C1] ? irq_exit_rcu+0x20/0x20 [ 235.529069][ C1] ? rcu_is_watching+0x15/0xb0 [ 235.529087][ C1] irq_exit_rcu+0x9/0x20 [ 235.529099][ C1] sysvec_irq_work+0xa1/0xc0 [ 235.529117][ C1] [ 235.529121][ C1] [ 235.529126][ C1] asm_sysvec_irq_work+0x1a/0x20 [ 235.529140][ C1] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 235.529159][ C1] 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 [ 235.529170][ C1] RSP: 0018:ffffc90000187de0 EFLAGS: 000002c6 [ 235.529182][ C1] RAX: fb84c91736052d00 RBX: ffffffff81619a5b RCX: fb84c91736052d00 [ 235.529193][ C1] RDX: 0000000000000001 RSI: ffffffff8aaaba40 RDI: ffffffff8afc6700 [ 235.529203][ C1] RBP: ffffc90000187f20 R08: ffff8880b8f36d4b R09: 1ffff110171e6da9 [ 235.529213][ C1] R10: dffffc0000000000 R11: ffffed10171e6daa R12: ffffffff8e4a7da8 [ 235.529224][ C1] R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff1100364e780 [ 235.529235][ C1] ? do_idle+0x1eb/0x510 [ 235.529256][ C1] default_idle+0x13/0x20 [ 235.529275][ C1] default_idle_call+0x6c/0xa0 [ 235.529294][ C1] do_idle+0x1eb/0x510 [ 235.529313][ C1] ? idle_inject_timer_fn+0x60/0x60 [ 235.529329][ C1] ? asm_common_interrupt+0x26/0x40 [ 235.529358][ C1] cpu_startup_entry+0x43/0x60 [ 235.529374][ C1] start_secondary+0xee/0xf0 [ 235.529389][ C1] secondary_startup_64_no_verify+0x179/0x17b [ 235.529416][ C1] [ 235.529422][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.422 msecs