Warning: Permanently added '10.128.1.190' (ED25519) to the list of known hosts. executing program executing program syzkaller login: [ 79.030401][ C0] sched: RT throttling activated executing program [ 80.050652][ T0] NOHZ tick-stop error: local softirq work is pending, handler #200!!! [ 80.060623][ T0] NOHZ tick-stop error: local softirq work is pending, handler #200!!! [ 158.900513][ T0] NOHZ tick-stop error: local softirq work is pending, handler #08!!! [ 183.820502][ T0] NOHZ tick-stop error: local softirq work is pending, handler #02!!! [ 185.060375][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 185.067379][ C0] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5792/1:b..l [ 185.075574][ C0] rcu: (detected by 0, t=10502 jiffies, g=8277, q=110 ncpus=2) [ 185.083239][ C0] task:syz-executor209 state:R running task stack:26128 pid:5792 ppid:5791 flags:0x00004002 [ 185.094468][ C0] Call Trace: [ 185.097772][ C0] [ 185.100745][ C0] __schedule+0x14d2/0x44d0 [ 185.105336][ C0] ? asan.module_dtor+0x20/0x20 [ 185.110229][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x760 [ 185.116279][ C0] ? preempt_schedule_irq+0xaa/0x140 [ 185.121609][ C0] preempt_schedule_irq+0xb5/0x140 [ 185.126761][ C0] ? preempt_schedule_notrace+0x110/0x110 [ 185.132528][ C0] ? rcu_irq_exit_check_preempt+0xdf/0x210 [ 185.138383][ C0] irqentry_exit+0x67/0x70 [ 185.142837][ C0] asm_common_interrupt+0x26/0x40 [ 185.147906][ C0] RIP: 0010:lock_acquire+0x1f2/0x410 [ 185.153293][ C0] Code: 00 9c 8f 84 24 80 00 00 00 f6 84 24 81 00 00 00 02 0f 85 f5 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 66 43 c7 44 3c 09 00 00 43 c6 44 3c 0b 00 [ 185.172945][ C0] RSP: 0018:ffffc9000455f6e0 EFLAGS: 00000206 [ 185.179048][ C0] RAX: 0000000000000001 RBX: 0000000000000000 RCX: 945fb8f4e4870f00 [ 185.187044][ C0] RDX: 0000000000000000 RSI: ffffffff8aaacbc0 RDI: ffffffff8afc6700 [ 185.195040][ C0] RBP: ffffc9000455f7f0 R08: dffffc0000000000 R09: 1ffffffff21b46a4 [ 185.203038][ C0] R10: dffffc0000000000 R11: fffffbfff21b46a5 R12: 1ffff920008abee8 [ 185.211037][ C0] R13: ffffffff8cd2fba0 R14: 0000000000000246 R15: dffffc0000000000 [ 185.219242][ C0] ? read_lock_is_recursive+0x20/0x20 [ 185.224655][ C0] ? deref_stack_reg+0x1bd/0x240 [ 185.229649][ C0] ? entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 185.235757][ C0] is_bpf_text_address+0x47/0x2a0 [ 185.240818][ C0] ? is_bpf_text_address+0x26/0x2a0 [ 185.246069][ C0] ? is_bpf_text_address+0x26/0x2a0 [ 185.251304][ C0] ? entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 185.257413][ C0] kernel_text_address+0xa0/0xd0 [ 185.262386][ C0] __kernel_text_address+0xd/0x30 [ 185.267466][ C0] unwind_get_return_address+0x5d/0xc0 [ 185.272973][ C0] ? stack_trace_save+0xe0/0xe0 [ 185.277859][ C0] arch_stack_walk+0x11d/0x190 [ 185.282674][ C0] stack_trace_save+0x9c/0xe0 [ 185.287390][ C0] ? stack_trace_snprint+0xf0/0xf0 [ 185.292543][ C0] kasan_set_track+0x4e/0x70 [ 185.297167][ C0] ? kasan_set_track+0x4e/0x70 [ 185.301959][ C0] ? __kasan_kmalloc+0x8f/0xa0 [ 185.306839][ C0] ? ref_tracker_alloc+0x134/0x460 [ 185.311976][ C0] ? sk_alloc+0x1b3/0x360 [ 185.316343][ C0] ? inet_create+0x7a0/0xfe0 [ 185.320967][ C0] ? __sock_create+0x4a6/0x940 [ 185.325765][ C0] ? __sys_socket+0xd7/0x1a0 [ 185.330391][ C0] ? __x64_sys_socket+0x7a/0x90 [ 185.335289][ C0] ? do_syscall_64+0x55/0xb0 [ 185.339908][ C0] ? entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 185.346052][ C0] __kasan_kmalloc+0x8f/0xa0 [ 185.350677][ C0] ref_tracker_alloc+0x134/0x460 [ 185.355656][ C0] ? ref_tracker_dir_exit+0x500/0x500 [ 185.361065][ C0] ? free_zapped_rcu+0x240/0x240 [ 185.366051][ C0] ? sock_lock_init+0x3d6/0x820 [ 185.370936][ C0] ? sk_prot_alloc+0x161/0x210 [ 185.375737][ C0] sk_alloc+0x1b3/0x360 [ 185.379931][ C0] inet_create+0x7a0/0xfe0 [ 185.384384][ C0] ? inet_create+0x9c/0xfe0 [ 185.388937][ C0] __sock_create+0x4a6/0x940 [ 185.393578][ C0] __sys_socket+0xd7/0x1a0 [ 185.398031][ C0] __x64_sys_socket+0x7a/0x90 [ 185.402740][ C0] do_syscall_64+0x55/0xb0 [ 185.407201][ C0] ? clear_bhb_loop+0x40/0x90 [ 185.411904][ C0] ? clear_bhb_loop+0x40/0x90 [ 185.416606][ C0] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 185.422542][ C0] RIP: 0033:0x7ff30fa74d27 [ 185.426995][ C0] RSP: 002b:00007ffcebc98c48 EFLAGS: 00000206 ORIG_RAX: 0000000000000029 [ 185.435439][ C0] RAX: ffffffffffffffda RBX: 00007ffcebc98c70 RCX: 00007ff30fa74d27 [ 185.443445][ C0] RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002 [ 185.451447][ C0] RBP: 0000000000000003 R08: 00007ffcebc98c9c R09: 00007ffcebc99177 [ 185.459449][ C0] R10: 00007ffcebc98d90 R11: 0000000000000206 R12: 00007ff30faedd20 [ 185.467445][ C0] R13: 00007ff30faefee0 R14: 0000000000000000 R15: 431bde82d7b634db [ 185.475459][ C0] [ 185.478513][ C0] rcu: rcu_preempt kthread starved for 10543 jiffies! g8277 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 185.489647][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 185.499633][ C0] rcu: RCU grace-period kthread stack dump: [ 185.505553][ C0] task:rcu_preempt state:R running task stack:27528 pid:17 ppid:2 flags:0x00004000 [ 185.516363][ C0] Call Trace: [ 185.519663][ C0] [ 185.522623][ C0] __schedule+0x14d2/0x44d0 [ 185.527173][ C0] ? _raw_spin_unlock_irqrestore+0x31/0x110 [ 185.533108][ C0] ? _raw_spin_unlock_irqrestore+0xae/0x110 [ 185.539038][ C0] ? asan.module_dtor+0x20/0x20 [ 185.543925][ C0] ? enqueue_timer+0x4ab/0x530 [ 185.548719][ C0] ? __mod_timer+0x984/0xdb0 [ 185.553362][ C0] schedule+0xbd/0x170 [ 185.557462][ C0] schedule_timeout+0x160/0x280 [ 185.562431][ C0] ? console_conditional_schedule+0x40/0x40 [ 185.568360][ C0] ? update_process_times+0x1b0/0x1b0 [ 185.573863][ C0] ? prepare_to_swait_event+0x339/0x360 [ 185.579442][ C0] rcu_gp_fqs_loop+0x302/0x1560 [ 185.584324][ C0] ? rcu_gp_init+0x110e/0x1510 [ 185.589130][ C0] ? rcu_gp_kthread+0x380/0x380 [ 185.594022][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x760 [ 185.600042][ C0] ? rcu_gp_init+0x1510/0x1510 [ 185.604841][ C0] ? rcu_gp_cleanup+0xb4c/0xca0 [ 185.609722][ C0] ? _raw_spin_unlock_irq+0x23/0x50 [ 185.614958][ C0] ? lockdep_hardirqs_on+0x98/0x150 [ 185.620195][ C0] rcu_gp_kthread+0x99/0x380 [ 185.624829][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 185.629981][ C0] ? __kthread_parkme+0x7a/0x1c0 [ 185.634963][ C0] ? __kthread_parkme+0x162/0x1c0 [ 185.640044][ C0] kthread+0x2fa/0x390 [ 185.644145][ C0] ? rcu_report_qs_rsp+0x1a0/0x1a0 [ 185.649302][ C0] ? kthread_blkcg+0xd0/0xd0 [ 185.653922][ C0] ret_from_fork+0x48/0x80 [ 185.658372][ C0] ? kthread_blkcg+0xd0/0xd0 [ 185.662996][ C0] ret_from_fork_asm+0x11/0x20 [ 185.667824][ C0] [ 185.670879][ C0] rcu: Stack dump where RCU GP kthread last ran: [ 185.677249][ C0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.6.100-syzkaller #0 [ 185.684996][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 185.695075][ C0] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 185.700832][ 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 [ 185.720471][ C0] RSP: 0018:ffffffff8ca07d80 EFLAGS: 000002c6 [ 185.726577][ C0] RAX: 943e2b5d85b4bc00 RBX: ffffffff81619a5b RCX: 943e2b5d85b4bc00 [ 185.734572][ C0] RDX: 0000000000000001 RSI: ffffffff8aaaba40 RDI: ffffffff8afc6700 [ 185.742571][ C0] RBP: ffffffff8ca07eb8 R08: ffff8880b8e36d4b R09: 1ffff110171c6da9 [ 185.750572][ C0] R10: dffffc0000000000 R11: ffffed10171c6daa R12: ffffffff8e4a7da8 [ 185.758580][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff1952670 [ 185.766585][ C0] FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 [ 185.775550][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 185.782164][ C0] CR2: 0000000000000002 CR3: 000000007dd6d000 CR4: 00000000003506f0 [ 185.790166][ C0] Call Trace: [ 185.793486][ C0] [ 185.796484][ C0] default_idle+0x13/0x20 [ 185.800867][ C0] default_idle_call+0x6c/0xa0 [ 185.805680][ C0] do_idle+0x1eb/0x510 [ 185.809790][ C0] ? asan.module_dtor+0x20/0x20 [ 185.814700][ C0] ? idle_inject_timer_fn+0x60/0x60 [ 185.819940][ C0] ? _raw_spin_unlock_irqrestore+0x86/0x110 [ 185.825891][ C0] ? _raw_spin_unlock+0x40/0x40 [ 185.830788][ C0] cpu_startup_entry+0x43/0x60 [ 185.835590][ C0] rest_init+0x2e2/0x300 [ 185.839868][ C0] ? time_init+0x40/0x40 [ 185.844141][ C0] arch_call_rest_init+0xe/0x10 [ 185.849030][ C0] start_kernel+0x459/0x4e0 [ 185.853575][ C0] x86_64_start_reservations+0x2a/0x30 [ 185.859072][ C0] x86_64_start_kernel+0x60/0x60 [ 185.864137][ C0] secondary_startup_64_no_verify+0x179/0x17b [ 185.870274][ C0]