Warning: Permanently added '10.128.1.55' (ED25519) to the list of known hosts.
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[ 176.741720][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 176.748750][ C1] rcu: 0-....: (1 GPs behind) idle=1f1/1/0x4000000000000002 softirq=4858/4859 fqs=5250
[ 176.759065][ C1] (detected by 1, t=10502 jiffies, g=3933, q=428)
[ 176.765576][ C1] Sending NMI from CPU 1 to CPUs 0:
[ 176.770772][ C0] NMI backtrace for cpu 0
[ 176.770794][ C0] CPU: 0 PID: 4195 Comm: syz-executor135 Not tainted 5.15.189-syzkaller #0
[ 176.770808][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
[ 176.770825][ C0] RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x4/0x80
[ 176.770855][ C0] Code: 77 22 89 ff 89 f6 4a c7 44 02 08 05 00 00 00 4a 89 7c 02 10 4a 89 74 02 18 4a 89 44 02 20 48 ff c1 48 89 0a c3 90 48 8b 04 24 <65> 48 8b 0d b4 a7 8a 7e 65 8b 15 b5 a7 8a 7e 81 e2 00 01 ff 00 74
[ 176.770866][ C0] RSP: 0018:ffffc90000006fd8 EFLAGS: 00000046
[ 176.770879][ C0] RAX: ffffffff81964122 RBX: ffffc90000007180 RCX: ffff88807ae4bb80
[ 176.770889][ C0] RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
[ 176.770897][ C0] RBP: ffffc900000070d0 R08: dffffc0000000000 R09: ffffc90000007120
[ 176.770907][ C0] R10: fffff52000000e2b R11: 1ffff92000000e24 R12: dffffc0000000000
[ 176.770917][ C0] R13: ffffc90000007186 R14: 0000000000000000 R15: ffffc90000007340
[ 176.770926][ C0] FS: 00005555748713c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
[ 176.770939][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 176.770948][ C0] CR2: 00007fe197645a78 CR3: 000000006fe6d000 CR4: 00000000003506f0
[ 176.770960][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 176.770968][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 176.770976][ C0] Call Trace:
[ 176.770981][ C0]
[ 176.770986][ C0] perf_prepare_sample+0x1c2/0x1cb0
[ 176.771006][ C0] ? __lock_acquire+0x7c60/0x7c60
[ 176.771022][ C0] ? perf_callchain+0x190/0x190
[ 176.771039][ C0] perf_event_output_forward+0x146/0x280
[ 176.771052][ C0] ? __lock_acquire+0x7c60/0x7c60
[ 176.771066][ C0] ? perf_get_page_size+0x420/0x420
[ 176.771085][ C0] ? __perf_event_account_interrupt+0x187/0x280
[ 176.771100][ C0] __perf_event_overflow+0x364/0x530
[ 176.771113][ C0] ? mark_lock+0x94/0x320
[ 176.771129][ C0] perf_swevent_event+0x4ad/0x530
[ 176.771144][ C0] perf_tp_event+0x32c/0xb50
[ 176.771159][ C0] ? perf_trace_run_bpf_submit+0x1c0/0x1c0
[ 176.771193][ C0] perf_trace_run_bpf_submit+0xf3/0x1c0
[ 176.771209][ C0] perf_trace_preemptirq_template+0x2be/0x380
[ 176.771225][ C0] ? asm_sysvec_irq_work+0x16/0x20
[ 176.771244][ C0] ? trace_event_raw_event_preemptirq_template+0x270/0x270
[ 176.771260][ C0] ? __irq_exit_rcu+0x13b/0x220
[ 176.771273][ C0] ? irq_exit_rcu+0x20/0x20
[ 176.771286][ C0] ? asm_sysvec_irq_work+0x16/0x20
[ 176.771299][ C0] trace_irq_enable_rcuidle+0x108/0x180
[ 176.771313][ C0] trace_hardirqs_on+0x57/0x80
[ 176.771326][ C0] asm_sysvec_irq_work+0x16/0x20
[ 176.771339][ C0] RIP: 0010:rcu_read_unlock_special+0x84/0x480
[ 176.771354][ 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 7d 16 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
[ 176.771364][ C0] RSP: 0018:ffffc900000077a0 EFLAGS: 00000206
[ 176.771374][ C0] RAX: 93416afe06a52100 RBX: 1ffff92000000ef8 RCX: 93416afe06a52100
[ 176.771384][ C0] RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: ffffffff8a599340
[ 176.771394][ C0] RBP: ffffc90000007880 R08: dffffc0000000000 R09: ffffed101720765a
[ 176.771404][ C0] R10: ffffed101720765a R11: 1ffff11017207659 R12: ffffffff8c120800
[ 176.771414][ C0] R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
[ 176.771431][ C0] ? __rcu_read_unlock+0xd0/0xd0
[ 176.771446][ C0] ? __netif_receive_skb+0x290/0x290
[ 176.771464][ C0] __rcu_read_unlock+0x78/0xd0
[ 176.771477][ C0] netif_receive_skb_list_internal+0x93a/0xb90
[ 176.771495][ C0] ? netif_receive_skb_list+0x3e0/0x3e0
[ 176.771512][ C0] ? detach_buf_split+0x8a9/0xab0
[ 176.771528][ C0] napi_complete_done+0x37d/0x830
[ 176.771542][ C0] ? __lock_acquire+0x7c60/0x7c60
[ 176.771557][ C0] ? __napi_schedule_irqoff+0x230/0x230
[ 176.771570][ C0] ? virtqueue_get_buf_ctx+0x4a7/0xfd0
[ 176.771586][ C0] ? virtqueue_enable_cb_prepare+0x22e/0x560
[ 176.771602][ C0] virtnet_poll+0x912/0xef0
[ 176.771617][ C0] ? perf_trace_run_bpf_submit+0xf3/0x1c0
[ 176.771637][ C0] ? refill_work+0x210/0x210
[ 176.771649][ C0] ? lockdep_hardirqs_on_prepare+0x3fc/0x760
[ 176.771666][ C0] ? lock_chain_count+0x20/0x20
[ 176.771683][ C0] __napi_poll+0xc0/0x430
[ 176.771696][ C0] ? net_rx_action+0x2db/0x9c0
[ 176.771711][ C0] net_rx_action+0x4a8/0x9c0
[ 176.771725][ C0] ? perf_trace_preemptirq_template+0x2be/0x380
[ 176.771742][ C0] ? net_tx_action+0x870/0x870
[ 176.771755][ C0] ? lockdep_hardirqs_on_prepare+0x3fc/0x760
[ 176.771772][ C0] ? lock_chain_count+0x20/0x20
[ 176.771792][ C0] handle_softirqs+0x328/0x820
[ 176.771806][ C0] ? __irq_exit_rcu+0x12f/0x220
[ 176.771833][ C0] ? do_softirq+0x200/0x200
[ 176.771849][ C0] __irq_exit_rcu+0x12f/0x220
[ 176.771861][ C0] ? irq_exit_rcu+0x20/0x20
[ 176.771873][ C0] ? do_raw_spin_unlock+0x11d/0x230
[ 176.771890][ C0] irq_exit_rcu+0x5/0x20
[ 176.771901][ C0] common_interrupt+0xb5/0xd0
[ 176.771914][ C0]
[ 176.771918][ C0]
[ 176.771923][ C0] asm_common_interrupt+0x22/0x40
[ 176.771935][ C0] RIP: 0010:syscall_enter_from_user_mode+0x2a/0x70
[ 176.771950][ C0] Code: 41 56 53 48 89 f3 49 89 fe 48 8b 7c 24 10 e8 3d f6 ff ff eb 31 eb 35 e8 84 ab d5 f7 e8 7f a9 d5 f7 fb 65 48 8b 05 06 37 5a 76 <48> 8b 70 08 40 f6 c6 3f 74 0b 4c 89 f7 5b 41 5e e9 f1 ee bd f7 48
[ 176.771960][ C0] RSP: 0018:ffffc90002e9ff08 EFLAGS: 00000286
[ 176.771971][ C0] RAX: ffff88807ae4bb80 RBX: 00000000000000e6 RCX: 93416afe06a52100
[ 176.771980][ C0] RDX: dffffc0000000000 RSI: ffffffff8a0b15c0 RDI: ffffffff8a599340
[ 176.771990][ C0] RBP: ffffc90002e9ff48 R08: dffffc0000000000 R09: ffffed101720765a
[ 176.772000][ C0] R10: ffffed101720765a R11: 1ffff11017207659 R12: 0000000000000000
[ 176.772009][ C0] R13: 0000000000000000 R14: ffffc90002e9ff58 R15: 0000000000000000
[ 176.772024][ C0] ? syscall_enter_from_user_mode+0x21/0x70
[ 176.772038][ C0] do_syscall_64+0x24/0xa0
[ 176.772053][ C0] ? clear_bhb_loop+0x30/0x80
[ 176.772065][ C0] ? clear_bhb_loop+0x30/0x80
[ 176.772078][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 176.772094][ C0] RIP: 0033:0x7fe19761bc85
[ 176.772108][ C0] Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 46 8d ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 9f 8d ff ff 48 8b 04 24 48 83 c4 28 f7 d8
[ 176.772117][ C0] RSP: 002b:00007fff98611e20 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
[ 176.772130][ C0] RAX: ffffffffffffffda RBX: 0000000000000057 RCX: 00007fe19761bc85
[ 176.772139][ C0] RDX: 00007fff98611e60 RSI: 0000000000000000 RDI: 0000000000000000
[ 176.772147][ C0] RBP: 00000000000003e8 R08: 0000000000000000 R09: 00243481ae549ee0
[ 176.772156][ C0] R10: 0000000000000000 R11: 0000000000000293 R12: 00007fff98611eb0
[ 176.772164][ C0] R13: 00000000000117b8 R14: 00007fe19767930c R15: 00007fe197679300
[ 176.772180][ C0]
[ 176.772186][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.414 msecs
[ 178.671803][ T1110] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-... } 10695 jiffies s: 481 root: 0x1/.
[ 178.684131][ T1110] rcu: blocking rcu_node structures (internal RCU debug):
[ 178.691256][ T1110] Task dump for CPU 0:
[ 178.695384][ T1110] task:syz-executor135 state:R running task stack:25920 pid: 4195 ppid: 4191 flags:0x0000000c
[ 178.706215][ T1110] Call Trace:
[ 178.709487][ T1110]
[ 178.712484][ T1110] ? __perf_event_account_interrupt+0x187/0x280
[ 178.718731][ T1110] ? __perf_event_overflow+0x415/0x530
[ 178.724216][ T1110] ? perf_swevent_event+0x33e/0x530
[ 178.729415][ T1110] ? perf_tp_event+0xa3b/0xb50
[ 178.734236][ T1110] ? perf_trace_run_bpf_submit+0x1c0/0x1c0
[ 178.740082][ T1110] ? perf_trace_run_bpf_submit+0xf3/0x1c0
[ 178.745831][ T1110] ? perf_trace_preemptirq_template+0x2be/0x380
[ 178.752121][ T1110] ? rcu_is_watching+0x11/0xa0
[ 178.756885][ T1110] ? common_interrupt+0x8e/0xd0
[ 178.761758][ T1110] ? asm_common_interrupt+0x22/0x40
[ 178.766967][ T1110] ? syscall_enter_from_user_mode+0x2a/0x70
[ 178.772902][ T1110] ? syscall_enter_from_user_mode+0x21/0x70
[ 178.778794][ T1110] ? do_syscall_64+0x24/0xa0
[ 178.783407][ T1110] ? clear_bhb_loop+0x30/0x80
[ 178.788078][ T1110] ? clear_bhb_loop+0x30/0x80
[ 178.792815][ T1110] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0
[ 178.798896][ T1110]