------------[ cut here ]------------ kernel BUG at arch/x86/kvm/x86.c:7182! invalid opcode: 0000 [#1] SMP KASAN Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 1416 Comm: syz-executor3 Not tainted 4.14.0-rc1-next-20170919+ #7 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011 task: ffff880053bc8340 task.stack: ffff88004e858000 RIP: 0010:complete_emulated_mmio+0x5c2/0x6f0 arch/x86/kvm/x86.c:7182 RSP: 0018:ffff88004e85f620 EFLAGS: 00010216 RAX: 0000000000010000 RBX: ffff8800379f9e00 RCX: ffffc90000b5a000 RDX: 000000000000009a RSI: ffffffff810d5cf2 RDI: ffff8800379fa038 RBP: ffff88004e85f660 R08: 0000000000000000 R09: 0000000000000001 R10: ffff88004e85fa58 R11: 0000000000000001 R12: ffffffff810d5730 R13: ffff88003d105000 R14: ffff88006c9596c0 R15: ffff8800379f9e00 FS: 00007f51f4953700(0000) GS:ffff88003ed00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f51f4950ff8 CR3: 000000006967c000 CR4: 00000000000026e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kvm_arch_vcpu_ioctl_run+0x2df5/0x5b90 arch/x86/kvm/x86.c:7261 kvm_vcpu_ioctl+0x64c/0x1010 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2551 vfs_ioctl fs/ioctl.c:45 [inline] do_vfs_ioctl+0x1b1/0x1530 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: 0033:0x4474f9 RSP: 002b:00007f51f4952c08 EFLAGS: 00000296 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000017 RCX: 00000000004474f9 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000017 RBP: 0000000000000082 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 000000000000001b R13: 0000000000005780 R14: 00000000006e8840 R15: 0000000000000017 Code: 01 00 00 00 48 89 df e8 9d ba 47 00 44 89 e6 4c 89 f7 45 31 e4 e8 bf 5d 4d 00 45 85 ed 41 0f 94 c4 e9 5f fc ff ff e8 9e 8f 60 00 <0f> 0b e8 87 57 95 00 e9 9c fa ff ff 89 45 c8 e8 7a 57 95 00 8b RIP: complete_emulated_mmio+0x5c2/0x6f0 arch/x86/kvm/x86.c:7182 RSP: ffff88004e85f620 ---[ end trace a77a1613a2dd60be ]--- Kernel panic - not syncing: Fatal exception Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..