Warning: Permanently added '10.128.0.145' (ED25519) to the list of known hosts.
executing program
executing program
[ 188.815977][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 188.823017][ C0] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5825/1:b..l
[ 188.831098][ C0] rcu: (detected by 0, t=10502 jiffies, g=9641, q=255 ncpus=2)
[ 188.838819][ C0] task:syz-executor221 state:R running task stack:26968 pid:5825 tgid:5825 ppid:5820 task_flags:0x400040 flags:0x00080000
[ 188.852588][ C0] Call Trace:
[ 188.855871][ C0]
[ 188.858804][ C0] __schedule+0x14bc/0x5000
[ 188.863338][ C0] ? __lock_acquire+0x6b6/0x2cf0
[ 188.868283][ C0] ? __pfx___schedule+0x10/0x10
[ 188.873136][ C0] ? __x64_sys_openat+0x138/0x170
[ 188.878165][ C0] ? preempt_schedule_irq+0xaa/0x150
[ 188.883452][ C0] preempt_schedule_irq+0xb5/0x150
[ 188.888568][ C0] ? __pfx_preempt_schedule_irq+0x10/0x10
[ 188.894293][ C0] ? rcu_irq_exit_check_preempt+0xdf/0x210
[ 188.900106][ C0] irqentry_exit+0x5d8/0x660
[ 188.904691][ C0] ? rcu_is_watching+0x15/0xb0
[ 188.909453][ C0] asm_sysvec_reschedule_ipi+0x1a/0x20
[ 188.914907][ C0] RIP: 0010:lock_acquire+0x16c/0x340
[ 188.920202][ C0] Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 d4 e8 da 10 <48> 3b 44 24 58 0f 85 e5 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
[ 188.939816][ C0] RSP: 0018:ffffc90003e1f198 EFLAGS: 00000206
[ 188.945882][ C0] RAX: 7f199dfea85a8f00 RBX: 0000000000000000 RCX: 7f199dfea85a8f00
[ 188.953856][ C0] RDX: 000000001d89d60c RSI: ffffffff8d944207 RDI: ffffffff8bbf77e0
[ 188.961826][ C0] RBP: ffffffff81742f85 R08: ffffffff81742f85 R09: ffffffff8df3d820
[ 188.969796][ C0] R10: ffffc90003e1f358 R11: ffffffff81ad8e70 R12: 0000000000000002
[ 188.977767][ C0] R13: ffffffff8df3d820 R14: 0000000000000000 R15: 0000000000000246
[ 188.985751][ C0] ? unwind_next_frame+0xa5/0x2390
[ 188.990868][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10
[ 188.997020][ C0] ? unwind_next_frame+0xa5/0x2390
[ 189.002150][ C0] ? unwind_next_frame+0xa5/0x2390
[ 189.007263][ C0] ? __x64_sys_openat+0x138/0x170
[ 189.012281][ C0] ? unwind_next_frame+0xa5/0x2390
[ 189.017401][ C0] unwind_next_frame+0xc2/0x2390
[ 189.022344][ C0] ? unwind_next_frame+0xa5/0x2390
[ 189.027466][ C0] ? unwind_next_frame+0xa5/0x2390
[ 189.032581][ C0] ? do_sys_openat2+0x121/0x200
[ 189.037435][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10
[ 189.043588][ C0] arch_stack_walk+0x11c/0x150
[ 189.048364][ C0] ? __x64_sys_openat+0x138/0x170
[ 189.053393][ C0] stack_trace_save+0x9c/0xe0
[ 189.058070][ C0] ? __pfx_stack_trace_save+0x10/0x10
[ 189.063453][ C0] ? stack_depot_save_flags+0x40/0x850
[ 189.068917][ C0] ? __lock_acquire+0x6b6/0x2cf0
[ 189.073862][ C0] kasan_save_track+0x3e/0x80
[ 189.078539][ C0] ? kasan_save_track+0x3e/0x80
[ 189.083394][ C0] ? __kasan_kmalloc+0x93/0xb0
[ 189.088169][ C0] ? __kmalloc_cache_noprof+0x3e2/0x6f0
[ 189.093713][ C0] ? vhost_net_open+0xbd/0x490
[ 189.098472][ C0] ? misc_open+0x2d5/0x350
[ 189.102883][ C0] ? chrdev_open+0x4cc/0x5e0
[ 189.107471][ C0] ? do_dentry_open+0x7ce/0x1420
[ 189.112400][ C0] ? vfs_open+0x3b/0x340
[ 189.116634][ C0] ? path_openat+0x33ce/0x3d90
[ 189.121397][ C0] ? do_filp_open+0x1fa/0x410
[ 189.126076][ C0] ? do_sys_openat2+0x121/0x200
[ 189.130920][ C0] ? __x64_sys_openat+0x138/0x170
[ 189.135990][ C0] __kasan_kmalloc+0x93/0xb0
[ 189.140592][ C0] __kmalloc_cache_noprof+0x3e2/0x6f0
[ 189.145977][ C0] ? vhost_net_open+0xbd/0x490
[ 189.150738][ C0] vhost_net_open+0xbd/0x490
[ 189.155328][ C0] ? __pfx_vhost_net_open+0x10/0x10
[ 189.160533][ C0] misc_open+0x2d5/0x350
[ 189.164781][ C0] chrdev_open+0x4cc/0x5e0
[ 189.169204][ C0] ? __pfx_chrdev_open+0x10/0x10
[ 189.174146][ C0] ? fsnotify_open_perm_and_set_mode+0x113/0x610
[ 189.180475][ C0] ? __pfx_chrdev_open+0x10/0x10
[ 189.185437][ C0] do_dentry_open+0x7ce/0x1420
[ 189.190226][ C0] vfs_open+0x3b/0x340
[ 189.194305][ C0] ? path_openat+0x33b3/0x3d90
[ 189.199099][ C0] path_openat+0x33ce/0x3d90
[ 189.203791][ C0] ? stack_depot_save_flags+0x40/0x850
[ 189.209277][ C0] ? __kasan_slab_alloc+0x6c/0x80
[ 189.214333][ C0] ? __pfx_path_openat+0x10/0x10
[ 189.219281][ C0] ? __lock_acquire+0x6b6/0x2cf0
[ 189.224245][ C0] do_filp_open+0x1fa/0x410
[ 189.228770][ C0] ? __pfx_do_filp_open+0x10/0x10
[ 189.233814][ C0] ? _raw_spin_unlock+0x28/0x50
[ 189.238660][ C0] ? alloc_fd+0x64c/0x6c0
[ 189.243003][ C0] do_sys_openat2+0x121/0x200
[ 189.247680][ C0] ? __pfx_do_sys_openat2+0x10/0x10
[ 189.252874][ C0] ? exc_page_fault+0x82/0x100
[ 189.257673][ C0] __x64_sys_openat+0x138/0x170
[ 189.262539][ C0] do_syscall_64+0xfa/0xf80
[ 189.267046][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 189.273111][ C0] ? clear_bhb_loop+0x60/0xb0
[ 189.277785][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 189.283670][ C0] RIP: 0033:0x7fb76c9b9de9
[ 189.288090][ C0] RSP: 002b:00007ffcf5206e58 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
[ 189.296498][ C0] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb76c9b9de9
[ 189.304464][ C0] RDX: 0000000000000002 RSI: 0000200000000c00 RDI: ffffffffffffff9c
[ 189.312427][ C0] RBP: 00000000000f4240 R08: 0000000000000000 R09: 00000000000000a0
[ 189.320387][ C0] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
[ 189.328356][ C0] R13: 00007ffcf5207078 R14: 00007ffcf5206e80 R15: 00007ffcf5206e70
[ 189.336338][ C0]
[ 189.339374][ C0] rcu: rcu_preempt kthread starved for 10552 jiffies! g9641 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
[ 189.350484][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
[ 189.360455][ C0] rcu: RCU grace-period kthread stack dump:
[ 189.366341][ C0] task:rcu_preempt state:R running task stack:27784 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
[ 189.379833][ C0] Call Trace:
[ 189.383115][ C0]
[ 189.386049][ C0] __schedule+0x14bc/0x5000
[ 189.390588][ C0] ? lockdep_hardirqs_on+0x98/0x140
[ 189.395832][ C0] ? _raw_spin_unlock_irqrestore+0xad/0x110
[ 189.401725][ C0] ? __pfx___schedule+0x10/0x10
[ 189.406580][ C0] ? schedule+0x91/0x360
[ 189.410831][ C0] schedule+0x165/0x360
[ 189.415000][ C0] schedule_timeout+0x12b/0x270
[ 189.419854][ C0] ? __pfx_schedule_timeout+0x10/0x10
[ 189.425232][ C0] ? __pfx_process_timeout+0x10/0x10
[ 189.430518][ C0] ? prepare_to_swait_event+0x341/0x380
[ 189.436064][ C0] rcu_gp_fqs_loop+0x301/0x1540
[ 189.440928][ C0] ? __pfx_rcu_gp_init+0x10/0x10
[ 189.445866][ C0] ? lockdep_hardirqs_on+0x98/0x140
[ 189.451062][ C0] ? __pfx_rcu_gp_fqs_loop+0x10/0x10
[ 189.456355][ C0] ? _raw_spin_unlock_irq+0x2e/0x50
[ 189.461555][ C0] ? finish_swait+0xcd/0x1f0
[ 189.466147][ C0] rcu_gp_kthread+0x99/0x390
[ 189.470744][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10
[ 189.475955][ C0] ? __kthread_parkme+0x7b/0x200
[ 189.480907][ C0] ? __kthread_parkme+0x1a1/0x200
[ 189.485942][ C0] kthread+0x711/0x8a0
[ 189.490023][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10
[ 189.495220][ C0] ? __pfx_kthread+0x10/0x10
[ 189.499824][ C0] ? _raw_spin_unlock_irq+0x23/0x50
[ 189.505017][ C0] ? lockdep_hardirqs_on+0x98/0x140
[ 189.510299][ C0] ? __pfx_kthread+0x10/0x10
[ 189.514889][ C0] ret_from_fork+0x599/0xb30
[ 189.519485][ C0] ? __pfx_ret_from_fork+0x10/0x10
[ 189.524605][ C0] ? __switch_to_asm+0x39/0x70
[ 189.529363][ C0] ? __switch_to_asm+0x33/0x70
[ 189.534121][ C0] ? __pfx_kthread+0x10/0x10
[ 189.538718][ C0] ret_from_fork_asm+0x1a/0x30
[ 189.543492][ C0]
[ 189.546511][ C0] rcu: Stack dump where RCU GP kthread last ran:
[ 189.552834][ C0] Sending NMI from CPU 0 to CPUs 1:
[ 189.558045][ C1] NMI backtrace for cpu 1
[ 189.558070][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full)
[ 189.558089][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 189.558100][ C1] RIP: 0010:pv_native_safe_halt+0x13/0x20
[ 189.558122][ C1] Code: 93 ef 02 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 13 50 10 00 f3 0f 1e fa fb f4 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
[ 189.558137][ C1] RSP: 0018:ffffc90000197de0 EFLAGS: 000002c6
[ 189.558171][ C1] RAX: 8e2fb5bca2145a00 RBX: ffffffff81977fe7 RCX: 8e2fb5bca2145a00
[ 189.558185][ C1] RDX: 0000000000000001 RSI: ffffffff8d75d537 RDI: ffffffff8bbf77e0
[ 189.558198][ C1] RBP: ffffc90000197f10 R08: ffff8880b87336db R09: 1ffff110170e66db
[ 189.558211][ C1] R10: dffffc0000000000 R11: ffffed10170e66dc R12: ffffffff8f7ddd70
[ 189.558225][ C1] R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff110039deb70
[ 189.558237][ C1] FS: 0000000000000000(0000) GS:ffff888125f8b000(0000) knlGS:0000000000000000
[ 189.558252][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 189.558264][ C1] CR2: 00007fb76ca310d0 CR3: 0000000072986000 CR4: 00000000003526f0
[ 189.558280][ C1] Call Trace:
[ 189.558288][ C1]
[ 189.558294][ C1] default_idle+0x13/0x20
[ 189.558318][ C1] default_idle_call+0x73/0xb0
[ 189.558343][ C1] do_idle+0x1e7/0x510
[ 189.558369][ C1] ? asm_sysvec_call_function_single+0x1a/0x20
[ 189.558389][ C1] ? lockdep_hardirqs_on+0x98/0x140
[ 189.558410][ C1] ? __pfx_do_idle+0x10/0x10
[ 189.558440][ C1] ? do_idle+0x4ed/0x510
[ 189.558466][ C1] cpu_startup_entry+0x44/0x60
[ 189.558492][ C1] start_secondary+0x101/0x110
[ 189.558513][ C1] common_startup_64+0x13e/0x147
[ 189.558540][ C1]