Warning: Permanently added '10.128.1.51' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 305.724208][ T6527] 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. [ 305.769708][ C0] hrtimer: interrupt took 32597 ns [ 410.778210][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 410.785237][ C1] (detected by 1, t=10502 jiffies, g=9549, q=18) [ 410.791656][ C1] rcu: All QSes seen, last rcu_preempt kthread activity 10502 (4294978228-4294967726), jiffies_till_next_fqs=1, root ->qsmask 0x0 [ 410.805022][ C1] rcu: rcu_preempt kthread starved for 10502 jiffies! g9549 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 [ 410.816393][ C1] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior. [ 410.826359][ C1] rcu: RCU grace-period kthread stack dump: [ 410.832241][ C1] task:rcu_preempt state:R running task stack:28696 pid: 14 ppid: 2 flags:0x00004000 [ 410.843024][ C1] Call Trace: [ 410.846482][ C1] __schedule+0x940/0x26f0 [ 410.851047][ C1] ? io_schedule_timeout+0x140/0x140 [ 410.856344][ C1] ? debug_object_destroy+0x210/0x210 [ 410.861783][ C1] schedule+0xd3/0x270 [ 410.865874][ C1] schedule_timeout+0x14a/0x2a0 [ 410.870777][ C1] ? usleep_range+0x170/0x170 [ 410.875462][ C1] ? destroy_timer_on_stack+0x20/0x20 [ 410.880949][ C1] ? gpiochip_add_data_with_key.cold+0x466/0x597 [ 410.887333][ C1] ? _raw_spin_unlock_irqrestore+0x3d/0x70 [ 410.893165][ C1] ? prepare_to_swait_event+0xee/0x470 [ 410.898698][ C1] rcu_gp_fqs_loop+0x186/0x810 [ 410.903520][ C1] ? force_qs_rnp+0x760/0x760 [ 410.908213][ C1] ? rcu_gp_init+0x906/0x12a0 [ 410.912911][ C1] rcu_gp_kthread+0x1de/0x320 [ 410.917606][ C1] ? rcu_gp_init+0x12a0/0x12a0 [ 410.922384][ C1] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 410.928717][ C1] ? __kthread_parkme+0x15f/0x220 [ 410.933807][ C1] ? rcu_gp_init+0x12a0/0x12a0 [ 410.938583][ C1] kthread+0x3e5/0x4d0 [ 410.942661][ C1] ? set_kthread_struct+0x130/0x130 [ 410.947874][ C1] ret_from_fork+0x1f/0x30 [ 410.952340][ C1] rcu: Stack dump where RCU GP kthread last ran: [ 410.958659][ C1] Sending NMI from CPU 1 to CPUs 0: [ 410.963866][ C0] NMI backtrace for cpu 0 [ 410.963876][ C0] CPU: 0 PID: 6527 Comm: syz-executor554 Not tainted 5.15.0-rc1-next-20210914-syzkaller #0 [ 410.963898][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 410.963909][ C0] RIP: 0010:check_preemption_disabled+0x13/0x140 [ 410.963967][ C0] Code: 00 e8 31 70 1f f8 eb 99 0f 1f 44 00 00 0f 0b e9 23 ff ff ff cc cc cc 41 56 41 55 49 89 f5 41 54 55 48 89 fd 53 0f 1f 44 00 00 <65> 44 8b 25 2d de ce 76 65 8b 1d be 38 cf 76 81 e3 ff ff ff 7f 31 [ 410.963986][ C0] RSP: 0018:ffffc90002b17300 EFLAGS: 00000046 [ 410.964003][ C0] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 410.964015][ C0] RDX: ffff8880267eb900 RSI: ffffffff89888900 RDI: ffffffff89e43740 [ 410.964029][ C0] RBP: ffffffff89e43740 R08: 0000000000000000 R09: 0000000000000000 [ 410.964041][ C0] R10: ffffffff817c3c8c R11: 0000000000000000 R12: 0000000000000000 [ 410.964053][ C0] R13: ffffffff89888900 R14: 0000000000000000 R15: 0000000000000000 [ 410.964065][ C0] FS: 0000000001739300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 410.964084][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 410.964098][ C0] CR2: 0000000000000000 CR3: 000000007e0ac000 CR4: 00000000001526f0 [ 410.964111][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 410.964122][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 410.964133][ C0] Call Trace: [ 410.964141][ C0] sysvec_apic_timer_interrupt+0x73/0xc0 [ 410.964166][ C0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 410.964193][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x7/0x60 [ 410.964217][ C0] Code: fd ff ff b9 ff ff ff ff ba 08 00 00 00 4d 8b 03 48 0f bd ca 49 8b 45 00 48 63 c9 e9 64 ff ff ff 0f 1f 00 65 8b 05 69 e1 8b 7e <89> c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b 14 25 40 f0 01 00 a9 [ 410.964236][ C0] RSP: 0018:ffffc90002b173f0 EFLAGS: 00000282 [ 410.964250][ C0] RAX: 0000000080000000 RBX: fffffffffffffff2 RCX: fffffffffffffff2 [ 410.964263][ C0] RDX: 0000000000000000 RSI: ffff8880267eb900 RDI: 0000000000000003 [ 410.964275][ C0] RBP: ffff888015bab800 R08: 0000000000000000 R09: 0000000000000000 [ 410.964293][ C0] R10: ffffffff81a96608 R11: 0000000000000000 R12: 0000000020000000 [ 410.964306][ C0] R13: ffff8880267eb900 R14: ffffc90002b17558 R15: ffff888015bab8b8 [ 410.964322][ C0] ? get_user_pages_unlocked+0x428/0x760 [ 410.964407][ C0] get_user_pages_unlocked+0x692/0x760 [ 410.964434][ C0] ? pin_user_pages_locked+0x830/0x830 [ 410.964461][ C0] hva_to_pfn+0x1c1/0xdd0 [ 410.964522][ C0] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 410.964549][ C0] ? lockdep_hardirqs_on+0x79/0x100 [ 410.964575][ C0] ? kvm_is_reserved_pfn+0x1f0/0x1f0 [ 410.964600][ C0] ? kvm_vcpu_gfn_to_memslot+0x4b1/0x5f0 [ 410.964625][ C0] ? lock_is_held_type+0xfd/0x140 [ 410.964650][ C0] __gfn_to_pfn_memslot+0x229/0x420 [ 410.964676][ C0] kvm_faultin_pfn+0x171/0xbc0 [ 410.964721][ C0] ? paging64_gva_to_gpa_nested+0x1c0/0x1c0 [ 410.964746][ C0] ? lock_downgrade+0x6e0/0x6e0 [ 410.964785][ C0] ? direct_page_fault+0x5d7/0x2320 [ 410.964827][ C0] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 410.964850][ C0] ? kvm_mmu_topup_memory_cache+0x19c/0x1f0 [ 410.964879][ C0] direct_page_fault+0xd22/0x2320 [ 410.964910][ C0] ? disallowed_hugepage_adjust+0x190/0x190 [ 410.964935][ C0] ? lock_chain_count+0x20/0x20 [ 410.964954][ C0] ? __sanitizer_cov_trace_const_cmp8+0x10/0x70 [ 410.964979][ C0] ? kvm_vcpu_mtrr_init+0x70/0x70 [ 410.965025][ C0] ? lock_chain_count+0x20/0x20 [ 410.965044][ C0] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 410.965067][ C0] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 410.965093][ C0] kvm_mmu_page_fault+0x17e/0x17f0 [ 410.965122][ C0] ? mark_held_locks+0x9f/0xe0 [ 410.965142][ C0] ? kvm_mmu_unprotect_page+0x360/0x360 [ 410.965168][ C0] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 410.965194][ C0] ? lockdep_hardirqs_on+0x79/0x100 [ 410.965215][ C0] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 410.965247][ C0] handle_ept_violation+0x29c/0x6e0 [ 410.965271][ C0] ? vmx_inject_irq+0x590/0x590 [ 410.965302][ C0] vmx_handle_exit+0x4be/0x1950 [ 410.965348][ C0] vcpu_enter_guest+0x2a90/0x4410 [ 410.965407][ C0] ? mark_held_locks+0x9f/0xe0 [ 410.965430][ C0] ? kvm_vcpu_reload_apic_access_page+0x70/0x70 [ 410.965454][ C0] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 410.965482][ C0] ? kvm_arch_vcpu_ioctl_run+0x4c6/0x1b10 [ 410.965509][ C0] ? kvm_arch_vcpu_ioctl_run+0x47c/0x1b10 [ 410.965532][ C0] kvm_arch_vcpu_ioctl_run+0x47c/0x1b10 [ 410.965560][ C0] kvm_vcpu_ioctl+0x570/0xf30 [ 410.965584][ C0] ? kvm_clear_dirty_log_protect+0x910/0x910 [ 410.965614][ C0] ? irqentry_enter+0x28/0x50 [ 410.965636][ C0] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 410.965662][ C0] ? lockdep_hardirqs_on+0x79/0x100 [ 410.965684][ C0] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 410.965712][ C0] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 410.965737][ C0] ? kvm_clear_dirty_log_protect+0x910/0x910 [ 410.965762][ C0] __x64_sys_ioctl+0x193/0x200 [ 410.965804][ C0] do_syscall_64+0x35/0xb0 [ 410.965823][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 410.965848][ C0] RIP: 0033:0x43ff99 [ 410.965868][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48 [ 410.965888][ C0] RSP: 002b:00007ffdb97777a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 410.965906][ C0] RAX: ffffffffffffffda RBX: 00000000000f4240 RCX: 000000000043ff99 [ 410.965919][ C0] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 410.965931][ C0] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 410.965942][ C0] R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000403770 [ 410.965954][ C0] R13: 0000000000000000 R14: 00007ffdb97777e0 R15: 00007ffdb97777d0 [ 410.965975][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.108 msecs