no interfaces have a carrier
[ 48.100420][ T5493] 8021q: adding VLAN 0 to HW filter on device bond0
Starting crond: [ 48.138389][ T5493] eql: remember to turn off Van-Jacobson compression on your slave devices
OK
Starting sshd: OK
syzkaller
Warning: Permanently added '10.128.1.135' (ED25519) to the list of known hosts.
executing program
executing program
executing program
executing program
syzkaller login: [ 71.884937][ T5838] kvm_intel: L1TF CPU bug present and SMT on, data leak possible. See CVE-2018-3646 and https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/l1tf.html for details.
[ 177.125097][ C0] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
[ 177.132123][ C0] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5839/1:b..l
[ 177.140160][ C0] rcu: (detected by 0, t=10502 jiffies, g=8441, q=247 ncpus=2)
[ 177.147774][ C0] task:syz-executor877 state:R running task stack:26664 pid:5839 tgid:5839 ppid:5833 task_flags:0x400040 flags:0x00080000
[ 177.161493][ C0] Call Trace:
[ 177.164755][ C0]
[ 177.167674][ C0] __schedule+0x150e/0x5070
[ 177.172191][ C0] ? __pfx___schedule+0x10/0x10
[ 177.177023][ C0] ? __lock_acquire+0x6b6/0x2cf0
[ 177.182025][ C0] ? preempt_schedule_irq+0xaa/0x150
[ 177.187292][ C0] preempt_schedule_irq+0xb5/0x150
[ 177.192404][ C0] ? __pfx_preempt_schedule_irq+0x10/0x10
[ 177.198174][ C0] ? update_cfs_rq_load_avg+0x3fb/0x4e0
[ 177.203695][ C0] ? rcu_irq_exit_check_preempt+0xdf/0x210
[ 177.209481][ C0] irqentry_exit+0x5d8/0x660
[ 177.214051][ C0] ? rcu_is_watching+0x15/0xb0
[ 177.218795][ C0] asm_sysvec_reschedule_ipi+0x1a/0x20
[ 177.224232][ C0] RIP: 0010:unwind_next_frame+0xcea/0x23d0
[ 177.230016][ C0] Code: 00 00 83 fe 02 0f 85 a8 07 00 00 4c 89 7c 24 28 4d 8d 7e 08 4c 89 fd 48 c1 ed 03 48 b8 00 00 00 00 00 fc ff df 80 7c 05 00 00 <74> 08 4c 89 ff e8 0c 25 b4 00 4c 89 7c 24 68 48 89 9c 24 80 00 00
[ 177.249699][ C0] RSP: 0018:ffffc90003fff718 EFLAGS: 00000246
[ 177.255745][ C0] RAX: dffffc0000000000 RBX: ffffffff9031547d RCX: ffffffff8fb731d8
[ 177.263694][ C0] RDX: ffffffff90315478 RSI: 0000000000000002 RDI: ffffffff8be07900
[ 177.271642][ C0] RBP: 1ffff920007ffefe R08: 0000000000000009 R09: ffffffff8e13f2e0
[ 177.279592][ C0] R10: ffffc90003fff838 R11: ffffffff81ad9d50 R12: ffffc90003fffce8
[ 177.287553][ C0] R13: ffffc90003fff838 R14: ffffc90003fff7e8 R15: ffffc90003fff7f0
[ 177.295517][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10
[ 177.301664][ C0] ? unwind_next_frame+0xd4/0x23d0
[ 177.306759][ C0] ? unwind_next_frame+0xa5/0x23d0
[ 177.311938][ C0] ? kvm_uevent_notify_change+0x301/0x3a0
[ 177.317638][ C0] ? kvm_uevent_notify_change+0x301/0x3a0
[ 177.323336][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10
[ 177.329468][ C0] arch_stack_walk+0x11c/0x150
[ 177.334217][ C0] ? kvm_uevent_notify_change+0x301/0x3a0
[ 177.339913][ C0] stack_trace_save+0x9c/0xe0
[ 177.344582][ C0] ? __pfx_stack_trace_save+0x10/0x10
[ 177.349932][ C0] ? _raw_spin_unlock_irqrestore+0x85/0x110
[ 177.355803][ C0] ? lockdep_hardirqs_on+0x98/0x140
[ 177.360980][ C0] kasan_save_track+0x3e/0x80
[ 177.365635][ C0] ? kasan_save_track+0x3e/0x80
[ 177.370462][ C0] ? kasan_save_free_info+0x46/0x50
[ 177.375639][ C0] ? __kasan_slab_free+0x5c/0x80
[ 177.380552][ C0] ? kmem_cache_free+0x197/0x620
[ 177.385460][ C0] ? kobject_uevent_net_broadcast+0x42d/0x560
[ 177.391506][ C0] ? kobject_uevent_env+0x55c/0x9f0
[ 177.396674][ C0] ? kvm_uevent_notify_change+0x301/0x3a0
[ 177.402393][ C0] kasan_save_free_info+0x46/0x50
[ 177.407401][ C0] __kasan_slab_free+0x5c/0x80
[ 177.412142][ C0] kmem_cache_free+0x197/0x620
[ 177.416879][ C0] ? kobject_uevent_net_broadcast+0x42d/0x560
[ 177.422924][ C0] kobject_uevent_net_broadcast+0x42d/0x560
[ 177.428799][ C0] kobject_uevent_env+0x55c/0x9f0
[ 177.433808][ C0] kvm_uevent_notify_change+0x301/0x3a0
[ 177.439331][ C0] ? __pfx_kvm_vcpu_release+0x10/0x10
[ 177.444680][ C0] kvm_put_kvm+0xaa/0xa80
[ 177.448995][ C0] ? __pfx_kvm_vcpu_release+0x10/0x10
[ 177.454357][ C0] kvm_vcpu_release+0x54/0x60
[ 177.459027][ C0] __fput+0x44c/0xa70
[ 177.463010][ C0] fput_close_sync+0x113/0x220
[ 177.467783][ C0] ? __pfx_fput_close_sync+0x10/0x10
[ 177.473065][ C0] ? do_raw_spin_unlock+0x122/0x240
[ 177.478282][ C0] __x64_sys_close+0x7f/0x110
[ 177.482990][ C0] do_syscall_64+0xfa/0xf80
[ 177.487489][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 177.493539][ C0] ? clear_bhb_loop+0x60/0xb0
[ 177.498212][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f
[ 177.504105][ C0] RIP: 0033:0x7f3919e5240a
[ 177.508526][ C0] RSP: 002b:00007ffdf1095200 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
[ 177.516927][ C0] RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00007f3919e5240a
[ 177.524894][ C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000005
[ 177.532861][ C0] RBP: 00007ffdf1095240 R08: 0000000000000000 R09: 0000000000000000
[ 177.540911][ C0] R10: 0000000000000000 R11: 0000000000000293 R12: 00007f3919ed63ec
[ 177.548864][ C0] R13: 00000000000119bb R14: 00007ffdf1095260 R15: 00007f3919e16790
[ 177.556826][ C0]
[ 177.559838][ C0] rcu: rcu_preempt kthread starved for 10533 jiffies! g8441 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
[ 177.571006][ C0] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
[ 177.580957][ C0] rcu: RCU grace-period kthread stack dump:
[ 177.586820][ C0] task:rcu_preempt state:R running task stack:27168 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
[ 177.600273][ C0] Call Trace:
[ 177.603540][ C0]
[ 177.606460][ C0] __schedule+0x150e/0x5070
[ 177.610965][ C0] ? _raw_spin_unlock_irqrestore+0xad/0x110
[ 177.616862][ C0] ? __pfx___schedule+0x10/0x10
[ 177.621702][ C0] ? schedule+0x91/0x360
[ 177.625933][ C0] schedule+0x165/0x360
[ 177.630070][ C0] schedule_timeout+0x12b/0x270
[ 177.634948][ C0] ? __pfx_schedule_timeout+0x10/0x10
[ 177.640298][ C0] ? _raw_spin_unlock_irqrestore+0x85/0x110
[ 177.646172][ C0] ? __pfx_process_timeout+0x10/0x10
[ 177.651440][ C0] ? prepare_to_swait_event+0x341/0x380
[ 177.656965][ C0] rcu_gp_fqs_loop+0x301/0x1540
[ 177.661800][ C0] ? lockdep_hardirqs_on+0x98/0x140
[ 177.666978][ C0] ? __pfx_rcu_watching_snap_recheck+0x10/0x10
[ 177.673107][ C0] ? __pfx_rcu_gp_fqs_loop+0x10/0x10
[ 177.678363][ C0] ? _raw_spin_unlock_irq+0x2e/0x50
[ 177.683545][ C0] ? finish_swait+0xcd/0x1f0
[ 177.688119][ C0] rcu_gp_kthread+0x99/0x390
[ 177.692684][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10
[ 177.697856][ C0] ? __kthread_parkme+0x7b/0x200
[ 177.702856][ C0] ? __kthread_parkme+0x1a1/0x200
[ 177.707857][ C0] kthread+0x711/0x8a0
[ 177.711903][ C0] ? __pfx_rcu_gp_kthread+0x10/0x10
[ 177.717076][ C0] ? __pfx_kthread+0x10/0x10
[ 177.721646][ C0] ? _raw_spin_unlock_irq+0x23/0x50
[ 177.726825][ C0] ? lockdep_hardirqs_on+0x98/0x140
[ 177.732002][ C0] ? __pfx_kthread+0x10/0x10
[ 177.736572][ C0] ret_from_fork+0x599/0xb30
[ 177.741140][ C0] ? __pfx_ret_from_fork+0x10/0x10
[ 177.746233][ C0] ? __switch_to_asm+0x39/0x70
[ 177.750972][ C0] ? __switch_to_asm+0x33/0x70
[ 177.755716][ C0] ? __pfx_kthread+0x10/0x10
[ 177.760291][ C0] ret_from_fork_asm+0x1a/0x30
[ 177.765039][ C0]
[ 177.768035][ C0] rcu: Stack dump where RCU GP kthread last ran:
[ 177.774343][ C0] Sending NMI from CPU 0 to CPUs 1:
[ 177.779705][ C1] NMI backtrace for cpu 1
[ 177.779728][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full)
[ 177.779744][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
[ 177.779754][ C1] RIP: 0010:pv_native_safe_halt+0x13/0x20
[ 177.779778][ C1] Code: cc cc cc cc 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 33 9e 2a 00 f3 0f 1e fa fb f4 48 ee 02 00 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
[ 177.779790][ C1] RSP: 0018:ffffc90000197de0 EFLAGS: 000002c6
[ 177.779805][ C1] RAX: bf5695788d369800 RBX: ffffffff819786ba RCX: bf5695788d369800
[ 177.779816][ C1] RDX: 0000000000000001 RSI: ffffffff8d997e54 RDI: ffffffff8be07960
[ 177.779827][ C1] RBP: ffffc90000197f10 R08: ffff8880b87336db R09: 1ffff110170e66db
[ 177.779838][ C1] R10: dffffc0000000000 R11: ffffed10170e66dc R12: ffffffff8fa22f70
[ 177.779849][ C1] R13: 1ffff11003ad4b70 R14: 0000000000000001 R15: 0000000000000001
[ 177.779859][ C1] FS: 0000000000000000(0000) GS:ffff888125d25000(0000) knlGS:0000000000000000
[ 177.779871][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 177.779882][ C1] CR2: 00007f3919de1d58 CR3: 000000007f786000 CR4: 00000000003526f0
[ 177.779896][ C1] Call Trace:
[ 177.779904][ C1]
[ 177.779909][ C1] default_idle+0x13/0x20
[ 177.779923][ C1] default_idle_call+0x73/0xb0
[ 177.779937][ C1] do_idle+0x1ea/0x520
[ 177.779958][ C1] ? __pfx_do_idle+0x10/0x10
[ 177.779975][ C1] ? _raw_spin_unlock_irqrestore+0xad/0x110
[ 177.779998][ C1] ? complete+0xb1/0x1b0
[ 177.780018][ C1] cpu_startup_entry+0x44/0x60
[ 177.780035][ C1] start_secondary+0x101/0x110
[ 177.780058][ C1] common_startup_64+0x13e/0x147
[ 177.780084][ C1]