Warning: Permanently added '10.128.1.5' (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 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 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 executing program executing program executing program executing program executing program executing program executing program [ 179.551925][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 179.559020][ C1] rcu: 0-....: (0 ticks this GP) idle=f89/1/0x4000000000000000 softirq=5618/5618 fqs=2099 [ 179.569539][ C1] (detected by 1, t=10502 jiffies, g=5621, q=114) [ 179.576073][ C1] Sending NMI from CPU 1 to CPUs 0: [ 179.581298][ C0] NMI backtrace for cpu 0 [ 179.581318][ C0] CPU: 0 PID: 4305 Comm: syz-executor302 Not tainted syzkaller #0 [ 179.581332][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 179.581345][ C0] RIP: 0010:asm_sysvec_irq_work+0x0/0x20 [ 179.581391][ C0] Code: e9 a5 03 00 00 90 90 90 90 90 0f 01 ca fc 6a ff e8 a5 02 00 00 48 89 c4 48 89 e7 e8 4a e8 df ff e9 85 03 00 00 90 90 90 90 90 <0f> 01 ca fc 6a ff e8 85 02 00 00 48 89 c4 48 89 e7 e8 1a ed df ff [ 179.581404][ C0] RSP: 0018:ffffc90002e5f898 EFLAGS: 00000006 [ 179.581417][ C0] RAX: 349a65499094c500 RBX: 1ffff920005cbf1c RCX: 349a65499094c500 [ 179.581427][ C0] RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4200 [ 179.581437][ C0] RBP: ffffc90002e5f988 R08: ffffffff901ee0ff R09: 1ffffffff203dc1f [ 179.581446][ C0] R10: dffffc0000000000 R11: fffffbfff203dc20 R12: ffffffff8c323400 [ 179.581455][ C0] R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 [ 179.581464][ C0] FS: 0000555575fbc3c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 [ 179.581475][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 179.581485][ C0] CR2: 0000555575fbc348 CR3: 0000000024599000 CR4: 00000000003506f0 [ 179.581497][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 179.581505][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 179.581513][ C0] Call Trace: [ 179.581520][ C0] [ 179.581523][ C0] RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 [ 179.581540][ C0] Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 02 20 9d 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08 [ 179.581550][ C0] RSP: 0018:ffffc90002e5f8c0 EFLAGS: 00000206 [ 179.581572][ C0] ? __rcu_read_unlock+0xd0/0xd0 [ 179.581586][ C0] ? read_lock_is_recursive+0x10/0x10 [ 179.581606][ C0] __rcu_read_unlock+0x78/0xd0 [ 179.581619][ C0] mutex_spin_on_owner+0x345/0x370 [ 179.581638][ C0] mutex_optimistic_spin+0x38/0x300 [ 179.581653][ C0] __mutex_lock_common+0xe99/0x2400 [ 179.581673][ C0] ? perf_trace_init+0x4c/0x2d0 [ 179.581695][ C0] ? mutex_lock_io_nested+0x60/0x60 [ 179.581713][ C0] ? rcu_lock_release+0x9/0x20 [ 179.581730][ C0] mutex_lock_nested+0x17/0x20 [ 179.581743][ C0] perf_trace_init+0x4c/0x2d0 [ 179.581755][ C0] ? perf_tp_event_init+0x78/0x110 [ 179.581770][ C0] perf_tp_event_init+0x89/0x110 [ 179.581784][ C0] perf_try_init_event+0x12b/0x3d0 [ 179.581800][ C0] perf_event_alloc+0xf78/0x21d0 [ 179.581815][ C0] ? _raw_spin_unlock+0x24/0x40 [ 179.581831][ C0] __se_sys_perf_event_open+0x5de/0x1bb0 [ 179.581850][ C0] ? __x64_sys_perf_event_open+0xc0/0xc0 [ 179.581870][ C0] ? lockdep_hardirqs_on+0x94/0x140 [ 179.581884][ C0] ? __x64_sys_perf_event_open+0x1c/0xc0 [ 179.581898][ C0] do_syscall_64+0x4c/0xa0 [ 179.581910][ C0] ? clear_bhb_loop+0x30/0x80 [ 179.581922][ C0] ? clear_bhb_loop+0x30/0x80 [ 179.581935][ C0] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 179.581949][ C0] RIP: 0033:0x7facbccc6169 [ 179.581974][ C0] 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 [ 179.581983][ C0] RSP: 002b:00007ffc3afbc588 EFLAGS: 00000246 ORIG_RAX: 000000000000012a [ 179.581996][ C0] RAX: ffffffffffffffda RBX: 0000200000000440 RCX: 00007facbccc6169 [ 179.582005][ C0] RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 00002000000003c0 [ 179.582014][ C0] RBP: 0000200000000780 R08: 0000000000000000 R09: 0000000000000008 [ 179.582022][ C0] R10: ffffffffffffffff R11: 0000000000000246 R12: 00002000000007b0 [ 179.582030][ C0] R13: 0000200000000788 R14: 0000200000000784 R15: 0000000000000000 [ 179.582046][ C0] [ 184.022031][ T21] rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-... } 10948 jiffies s: 777 root: 0x1/. [ 184.034482][ T21] rcu: blocking rcu_node structures (internal RCU debug): [ 184.041627][ T21] Task dump for CPU 0: [ 184.045753][ T21] task:syz-executor302 state:D stack:27696 pid: 4305 ppid: 4197 flags:0x0000400e [ 184.055001][ T21] Call Trace: [ 184.058288][ T21] [ 184.061233][ T21] ? rcu_read_unlock_special+0x7f/0x4a0 [ 184.066819][ T21] ? __rcu_read_unlock+0xd0/0xd0 [ 184.071766][ T21] ? read_lock_is_recursive+0x10/0x10 [ 184.077253][ T21] ? __rcu_read_unlock+0x78/0xd0 [ 184.082241][ T21] ? mutex_spin_on_owner+0x345/0x370 [ 184.087554][ T21] ? mutex_optimistic_spin+0x38/0x300 [ 184.092966][ T21] ? __mutex_lock_common+0xe99/0x2400 [ 184.098359][ T21] ? perf_trace_init+0x4c/0x2d0 [ 184.103255][ T21] ? mutex_lock_io_nested+0x60/0x60 [ 184.108473][ T21] ? rcu_lock_release+0x9/0x20 [ 184.113277][ T21] ? mutex_lock_nested+0x17/0x20 [ 184.118224][ T21] ? perf_trace_init+0x4c/0x2d0 [ 184.123219][ T21] ? perf_tp_event_init+0x78/0x110 [ 184.128346][ T21] ? perf_tp_event_init+0x89/0x110 [ 184.133496][ T21] ? perf_try_init_event+0x12b/0x3d0 [ 184.138795][ T21] ? perf_event_alloc+0xf78/0x21d0 [ 184.143947][ T21] ? _raw_spin_unlock+0x24/0x40 [ 184.148816][ T21] ? __se_sys_perf_event_open+0x5de/0x1bb0 [ 184.154678][ T21] ? __x64_sys_perf_event_open+0xc0/0xc0 [ 184.160350][ T21] ? lockdep_hardirqs_on+0x94/0x140 [ 184.165585][ T21] ? __x64_sys_perf_event_open+0x1c/0xc0 [ 184.171227][ T21] ? do_syscall_64+0x4c/0xa0 [ 184.175886][ T21] ? clear_bhb_loop+0x30/0x80 [ 184.180571][ T21] ? clear_bhb_loop+0x30/0x80 [ 184.185285][ T21] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 184.191376][ T21]