kernel BUG at arch/x86/kvm/x86.c:7150! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 3 PID: 3029 Comm: syz-executor0 Not tainted 4.13.0-rc5-next-20170817+ #5 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 task: ffff88006c488700 task.stack: ffff880067800000 RIP: 0010:complete_emulated_mmio+0x5be/0x6f0 arch/x86/kvm/x86.c:7150 RSP: 0018:ffff880067807620 EFLAGS: 00010297 RAX: ffff88006c488700 RBX: ffff880039428040 RCX: ffff88003942845c RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff880039428260 RBP: ffff880067807660 R08: 0000000000000000 R09: ffffed000cf00f2c R10: ffff880067807a58 R11: ffff8800678079d0 R12: ffffffff810d0840 R13: ffff880039c71000 R14: ffff88006da89f00 R15: ffff880039428040 FS: 00007f8311e83700(0000) GS:ffff88006df00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f04f6102000 CR3: 000000003d5de000 CR4: 00000000000026e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kvm_arch_vcpu_ioctl_run+0x2e2b/0x58b0 arch/x86/kvm/x86.c:7220 kvm_vcpu_ioctl+0x64c/0x1010 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2591 vfs_ioctl fs/ioctl.c:45 [inline] do_vfs_ioctl+0x1b1/0x1520 fs/ioctl.c:685 SYSC_ioctl fs/ioctl.c:700 [inline] SyS_ioctl+0x8f/0xc0 fs/ioctl.c:691 entry_SYSCALL_64_fastpath+0x1f/0xbe RIP: 0033:0x446749 RSP: 002b:00007f8311e82c08 EFLAGS: 00000282 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000000446749 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 0000000000a5f870 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000282 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8311e839c0 R15: 00007f8311e83700 Code: 01 00 00 00 48 89 df e8 51 9e 47 00 44 89 e6 4c 89 f7 45 31 e4 e8 93 25 4d 00 45 85 ed 41 0f 94 c4 e9 c5 fc ff ff e8 f2 2e 60 00 <0f> 0b e8 1b 99 94 00 e9 a0 fa ff ff 89 45 c8 e8 0e 99 94 00 8b RIP: complete_emulated_mmio+0x5be/0x6f0 arch/x86/kvm/x86.c:7150 RSP: ffff880067807620 ---[ end trace f2b488a12d890bf5 ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..