[ OK ] Started OpenBSD Secure Shell server. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.227' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 70.021686][ T8431] 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. [ 70.092343][ T8431] ------------[ cut here ]------------ [ 70.098279][ T8431] WARNING: CPU: 0 PID: 8431 at arch/x86/kvm/x86.c:7620 x86_emulate_instruction+0x9e8/0x1460 [ 70.109041][ T8431] Modules linked in: [ 70.113048][ T8431] CPU: 0 PID: 8431 Comm: syz-executor681 Not tainted 5.13.0-rc2-syzkaller #0 [ 70.122417][ T8431] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.133666][ T8431] RIP: 0010:x86_emulate_instruction+0x9e8/0x1460 [ 70.141787][ T8431] Code: c0 74 07 7f 05 e8 a8 48 a9 00 41 0f b6 5c 24 30 bf 06 00 00 00 89 de e8 56 4d 64 00 80 fb 06 0f 85 06 05 00 00 e8 98 46 64 00 <0f> 0b e8 91 46 64 00 48 89 ef e8 89 48 fe ff c7 44 24 1c 01 00 00 [ 70.161758][ T8431] RSP: 0018:ffffc90002057930 EFLAGS: 00010293 [ 70.168161][ T8431] RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000000000 [ 70.176386][ T8431] RDX: ffff88802caad4c0 RSI: ffffffff81108cc8 RDI: 0000000000000003 [ 70.185447][ T8431] RBP: ffff88802eb08000 R08: 0000000000000000 R09: 0000000000000006 [ 70.193935][ T8431] R10: ffffffff81108cba R11: 0000000000000006 R12: ffff88802bd48000 [ 70.202099][ T8431] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000040 [ 70.210534][ T8431] FS: 00000000012e3300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 70.219701][ T8431] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.226561][ T8431] CR2: 0000000000000000 CR3: 000000001459c000 CR4: 00000000001526f0 [ 70.235092][ T8431] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.243348][ T8431] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.251420][ T8431] Call Trace: [ 70.254732][ T8431] ? mmio_info_in_cache+0x176/0x520 [ 70.261020][ T8431] kvm_mmu_page_fault+0x2eb/0x1890 [ 70.267032][ T8431] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 70.273595][ T8431] ? kvm_mmu_unprotect_page+0x360/0x360 [ 70.279331][ T8431] ? lock_chain_count+0x20/0x20 [ 70.284353][ T8431] handle_ept_violation+0x29c/0x6f0 [ 70.289788][ T8431] ? vmx_inject_irq+0x590/0x590 [ 70.294866][ T8431] vmx_handle_exit+0x336/0x1800 [ 70.300186][ T8431] vcpu_enter_guest+0x235e/0x47e0 [ 70.305271][ T8431] ? kvm_vcpu_reload_apic_access_page+0x70/0x70 [ 70.311743][ T8431] ? lock_release+0x720/0x720 [ 70.316637][ T8431] ? mark_held_locks+0x9f/0xe0 [ 70.321530][ T8431] ? kvm_arch_vcpu_ioctl_run+0x47d/0x1990 [ 70.327342][ T8431] kvm_arch_vcpu_ioctl_run+0x47d/0x1990 [ 70.332916][ T8431] kvm_vcpu_ioctl+0x467/0xd10 [ 70.337919][ T8431] ? cpumask_test_cpu+0x50/0x50 [ 70.343023][ T8431] ? find_held_lock+0x2d/0x110 [ 70.347883][ T8431] ? __context_tracking_exit+0xb8/0xe0 [ 70.353367][ T8431] ? lock_downgrade+0x6e0/0x6e0 [ 70.358331][ T8431] ? lock_downgrade+0x6e0/0x6e0 [ 70.363237][ T8431] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 70.369543][ T8431] ? cpumask_test_cpu+0x50/0x50 [ 70.374412][ T8431] __x64_sys_ioctl+0x193/0x200 [ 70.379381][ T8431] do_syscall_64+0x3a/0xb0 [ 70.383814][ T8431] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 70.391015][ T8431] RIP: 0033:0x440da9 [ 70.394933][ T8431] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 70.416061][ T8431] RSP: 002b:00007ffe2af5d538 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 70.424795][ T8431] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 0000000000440da9 [ 70.432988][ T8431] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 70.441118][ T8431] RBP: 00000000004048a0 R08: 0000000000400488 R09: 0000000000400488 [ 70.449531][ T8431] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000404930 [ 70.457838][ T8431] R13: 0000000000000000 R14: 00000000004ae018 R15: 0000000000400488 [ 70.465942][ T8431] Kernel panic - not syncing: panic_on_warn set ... [ 70.472555][ T8431] CPU: 0 PID: 8431 Comm: syz-executor681 Not tainted 5.13.0-rc2-syzkaller #0 [ 70.481302][ T8431] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.491545][ T8431] Call Trace: [ 70.494908][ T8431] dump_stack+0x141/0x1d7 [ 70.499241][ T8431] panic+0x306/0x73d [ 70.503169][ T8431] ? __warn_printk+0xf3/0xf3 [ 70.507777][ T8431] ? __warn.cold+0x1a/0x44 [ 70.512184][ T8431] ? x86_emulate_instruction+0x9e8/0x1460 [ 70.517914][ T8431] __warn.cold+0x35/0x44 [ 70.522147][ T8431] ? x86_emulate_instruction+0x9e8/0x1460 [ 70.527857][ T8431] report_bug+0x1bd/0x210 [ 70.532180][ T8431] handle_bug+0x3c/0x60 [ 70.536348][ T8431] exc_invalid_op+0x14/0x40 [ 70.540852][ T8431] asm_exc_invalid_op+0x12/0x20 [ 70.545691][ T8431] RIP: 0010:x86_emulate_instruction+0x9e8/0x1460 [ 70.552013][ T8431] Code: c0 74 07 7f 05 e8 a8 48 a9 00 41 0f b6 5c 24 30 bf 06 00 00 00 89 de e8 56 4d 64 00 80 fb 06 0f 85 06 05 00 00 e8 98 46 64 00 <0f> 0b e8 91 46 64 00 48 89 ef e8 89 48 fe ff c7 44 24 1c 01 00 00 [ 70.572159][ T8431] RSP: 0018:ffffc90002057930 EFLAGS: 00010293 [ 70.578222][ T8431] RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000000000 [ 70.586914][ T8431] RDX: ffff88802caad4c0 RSI: ffffffff81108cc8 RDI: 0000000000000003 [ 70.594881][ T8431] RBP: ffff88802eb08000 R08: 0000000000000000 R09: 0000000000000006 [ 70.602932][ T8431] R10: ffffffff81108cba R11: 0000000000000006 R12: ffff88802bd48000 [ 70.610999][ T8431] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000040 [ 70.619263][ T8431] ? x86_emulate_instruction+0x9da/0x1460 [ 70.625084][ T8431] ? x86_emulate_instruction+0x9e8/0x1460 [ 70.630798][ T8431] ? mmio_info_in_cache+0x176/0x520 [ 70.636116][ T8431] kvm_mmu_page_fault+0x2eb/0x1890 [ 70.641223][ T8431] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 70.647452][ T8431] ? kvm_mmu_unprotect_page+0x360/0x360 [ 70.652997][ T8431] ? lock_chain_count+0x20/0x20 [ 70.657857][ T8431] handle_ept_violation+0x29c/0x6f0 [ 70.663044][ T8431] ? vmx_inject_irq+0x590/0x590 [ 70.667899][ T8431] vmx_handle_exit+0x336/0x1800 [ 70.672766][ T8431] vcpu_enter_guest+0x235e/0x47e0 [ 70.677884][ T8431] ? kvm_vcpu_reload_apic_access_page+0x70/0x70 [ 70.684262][ T8431] ? lock_release+0x720/0x720 [ 70.688952][ T8431] ? mark_held_locks+0x9f/0xe0 [ 70.693715][ T8431] ? kvm_arch_vcpu_ioctl_run+0x47d/0x1990 [ 70.699424][ T8431] kvm_arch_vcpu_ioctl_run+0x47d/0x1990 [ 70.704995][ T8431] kvm_vcpu_ioctl+0x467/0xd10 [ 70.709667][ T8431] ? cpumask_test_cpu+0x50/0x50 [ 70.714519][ T8431] ? find_held_lock+0x2d/0x110 [ 70.719286][ T8431] ? __context_tracking_exit+0xb8/0xe0 [ 70.724768][ T8431] ? lock_downgrade+0x6e0/0x6e0 [ 70.729749][ T8431] ? lock_downgrade+0x6e0/0x6e0 [ 70.734886][ T8431] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 70.741129][ T8431] ? cpumask_test_cpu+0x50/0x50 [ 70.746000][ T8431] __x64_sys_ioctl+0x193/0x200 [ 70.750782][ T8431] do_syscall_64+0x3a/0xb0 [ 70.755341][ T8431] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 70.761253][ T8431] RIP: 0033:0x440da9 [ 70.765349][ T8431] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 70.785245][ T8431] RSP: 002b:00007ffe2af5d538 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 70.793668][ T8431] RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 0000000000440da9 [ 70.801633][ T8431] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 [ 70.809688][ T8431] RBP: 00000000004048a0 R08: 0000000000400488 R09: 0000000000400488 [ 70.817655][ T8431] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000404930 [ 70.825726][ T8431] R13: 0000000000000000 R14: 00000000004ae018 R15: 0000000000400488 [ 70.834855][ T8431] Kernel Offset: disabled [ 70.839280][ T8431] Rebooting in 86400 seconds..