[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 33.375203] random: sshd: uninitialized urandom read (32 bytes read) [ 33.636519] kauditd_printk_skb: 9 callbacks suppressed [ 33.636528] audit: type=1400 audit(1573166992.961:35): avc: denied { map } for pid=6814 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [ 33.692214] random: sshd: uninitialized urandom read (32 bytes read) [ 34.225497] random: sshd: uninitialized urandom read (32 bytes read) [ 34.409776] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.56' (ECDSA) to the list of known hosts. [ 40.012573] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 40.131547] audit: type=1400 audit(1573166999.461:36): avc: denied { map } for pid=6827 comm="syz-executor701" path="/root/syz-executor701560650" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 40.142706] 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. [ 40.158300] audit: type=1400 audit(1573166999.471:37): avc: denied { map } for pid=6828 comm="syz-executor701" path="/dev/bus/usb/007/001" dev="devtmpfs" ino=299 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:usb_device_t:s0 tclass=chr_file permissive=1 [ 40.210800] ------------[ cut here ]------------ [ 40.216040] kernel BUG at arch/x86/kvm/mmu.c:3104! [ 40.221057] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 40.226495] Modules linked in: [ 40.229703] CPU: 1 PID: 6828 Comm: syz-executor701 Not tainted 4.14.152 #0 [ 40.236837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.246331] task: ffff8880a881a380 task.stack: ffff8880a89d0000 [ 40.252387] RIP: 0010:transparent_hugepage_adjust+0x285/0x300 [ 40.258425] RSP: 0018:ffff8880a89d7888 EFLAGS: 00010297 [ 40.263779] RAX: ffff8880a881a380 RBX: ffff8880a89d7958 RCX: 0000000000000009 [ 40.271042] RDX: 0000000000000000 RSI: ffff888085eeb708 RDI: ffff888085ee0390 [ 40.278713] RBP: ffff8880a89d78c0 R08: ffff888081c80200 R09: ffffffff88c916e8 [ 40.286314] R10: ffff8880a881ac50 R11: ffff8880a881a380 R12: ffff8880a89d7948 [ 40.294010] R13: ffff8880a89d7978 R14: ffff8880a4fa0040 R15: 000000000008db61 [ 40.301602] FS: 0000000001b43880(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000 [ 40.309820] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.315693] CR2: 0000000000000000 CR3: 0000000091f58000 CR4: 00000000001426e0 [ 40.323083] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.330434] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.337755] Call Trace: [ 40.340495] tdp_page_fault+0x47b/0x5b0 [ 40.344473] ? ept_page_fault+0x1300/0x1300 [ 40.348796] ? save_trace+0x290/0x290 [ 40.352692] ? trace_hardirqs_on+0x10/0x10 [ 40.357005] ? __lock_is_held+0xb6/0x140 [ 40.361127] ? check_preemption_disabled+0x3c/0x250 [ 40.367409] kvm_mmu_page_fault+0x10d/0x300 [ 40.371895] handle_ept_violation+0x157/0x440 [ 40.376393] ? handle_pause+0x410/0x410 [ 40.380357] vmx_handle_exit+0x20d/0x1330 [ 40.384495] ? vcpu_enter_guest+0xd2d/0x5220 [ 40.389045] vcpu_enter_guest+0xf28/0x5220 [ 40.393327] ? handle_ept_violation+0x440/0x440 [ 40.397988] ? load_fixmap_gdt+0x7d/0xb0 [ 40.402155] ? find_held_lock+0x100/0x130 [ 40.406456] ? emulator_read_emulated+0x50/0x50 [ 40.421246] ? lock_acquire+0x16f/0x430 [ 40.425271] ? kvm_check_async_pf_completion+0x2a9/0x410 [ 40.430767] kvm_arch_vcpu_ioctl_run+0x318/0x1000 [ 40.435715] ? kvm_arch_vcpu_ioctl_run+0x318/0x1000 [ 40.440721] kvm_vcpu_ioctl+0x401/0xd10 [ 40.444689] ? kvm_vcpu_block+0xbb0/0xbb0 [ 40.448829] ? __thp_get_unmapped_area+0x130/0x130 [ 40.453751] ? save_trace+0x290/0x290 [ 40.457601] ? vm_insert_mixed_mkwrite+0x40/0x40 [ 40.462349] ? __do_page_fault+0x4e9/0xb80 [ 40.466638] ? kvm_vcpu_block+0xbb0/0xbb0 [ 40.470778] do_vfs_ioctl+0x7ae/0x1060 [ 40.474655] ? selinux_file_mprotect+0x5d0/0x5d0 [ 40.479745] ? ioctl_preallocate+0x1c0/0x1c0 [ 40.484275] ? lock_downgrade+0x740/0x740 [ 40.488589] ? security_file_ioctl+0x7d/0xb0 [ 40.493124] ? security_file_ioctl+0x89/0xb0 [ 40.497718] SyS_ioctl+0x8f/0xc0 [ 40.501077] ? do_vfs_ioctl+0x1060/0x1060 [ 40.505218] do_syscall_64+0x1e8/0x640 [ 40.509100] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.513935] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 40.519327] RIP: 0033:0x444f29 [ 40.522557] RSP: 002b:00007ffcef49dce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 40.530567] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000444f29 [ 40.537829] RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000006 [ 40.545159] RBP: 00000000006cf018 R08: 00000000004002e0 R09: 00000000004002e0 [ 40.552420] R10: 00000000004002e0 R11: 0000000000000246 R12: 0000000000402170 [ 40.559684] R13: 0000000000402200 R14: 0000000000000000 R15: 0000000000000000 [ 40.567070] Code: ea 03 80 3c 02 00 75 66 48 8b 41 20 a8 01 0f 85 aa fe ff ff e9 dc fd ff ff 4c 89 e7 e8 55 ab 79 00 e9 35 fe ff ff e8 5b f8 4f 00 <0f> 0b 48 89 df e8 61 ab 79 00 e9 a9 fd ff ff 4c 89 ef e8 54 ab [ 40.586344] RIP: transparent_hugepage_adjust+0x285/0x300 RSP: ffff8880a89d7888 [ 40.593849] ---[ end trace b6e9bbef55f0fa4e ]--- [ 40.598768] Kernel panic - not syncing: Fatal exception [ 40.605572] Kernel Offset: disabled [ 40.609204] Rebooting in 86400 seconds..