executor: rename test_kvm.cc to test_executor.cc

1 files changed, 0 insertions, 240 deletions

diff --git a/executor/test_kvm.cc b/executor/test_kvm.cc
deleted file mode 100644
index 79b951f62..000000000
--- a/executor/test_kvm.cc
+++ /dev/null
@@ -1,240 +0,0 @@
-// Copyright 2017 syzkaller project authors. All rights reserved.
-// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
-
-#include "syscalls.h"
-
-#define SYZ_EXECUTOR
-#include "common.h"
-
-#include <sys/utsname.h>
-
-extern "C" int test_copyin()
-{
-	unsigned char x[4] = {};
-	STORE_BY_BITMASK(uint16_t, &x[1], 0x1234, 0, 0);
-	if (x[0] != 0 || x[1] != 0x34 || x[2] != 0x12 || x[3] != 0) {
-		printf("bad result of STORE_BY_BITMASK(0, 0): %x %x %x %x\n", x[0], x[1], x[2], x[3]);
-		return 1;
-	}
-	STORE_BY_BITMASK(uint16_t, &x[1], 0x555a, 5, 4);
-	if (x[0] != 0 || x[1] != 0x54 || x[2] != 0x13 || x[3] != 0) {
-		printf("bad result of STORE_BY_BITMASK(7, 3): %x %x %x %x\n", x[0], x[1], x[2], x[3]);
-		return 1;
-	}
-	return 0;
-}
-
-static unsigned host_kernel_version();
-static void dump_cpu_state(int cpufd, char* vm_mem);
-
-static int test_one(int text_type, const char* text, int text_size, int flags, int reason, bool check_rax)
-{
-	printf("=== testing text %d, text size 0x%x, flags 0x%x\n", text_type, text_size, flags);
-	int kvmfd = open("/dev/kvm", O_RDWR);
-	if (kvmfd == -1) {
-		if (errno == ENOENT) {
-			printf("/dev/kvm is not present\n");
-			return -1;
-		}
-		if (errno == EPERM) {
-			printf("no permissions to open /dev/kvm\n");
-			return -1;
-		}
-		printf("failed to open /dev/kvm (%d)\n", errno);
-		return 1;
-	}
-	int vmfd = ioctl(kvmfd, KVM_CREATE_VM, 0);
-	if (vmfd == -1) {
-		printf("KVM_CREATE_VM failed (%d)\n", errno);
-		return 1;
-	}
-	int cpufd = ioctl(vmfd, KVM_CREATE_VCPU, 0);
-	if (cpufd == -1) {
-		printf("KVM_CREATE_VCPU failed (%d)\n", errno);
-		return 1;
-	}
-	int cpu_mem_size = ioctl(kvmfd, KVM_GET_VCPU_MMAP_SIZE, 0);
-	if (cpu_mem_size <= 0) {
-		printf("KVM_GET_VCPU_MMAP_SIZE failed (%d)\n", errno);
-		return 1;
-	}
-	struct kvm_run* cpu_mem = (struct kvm_run*)mmap(0, cpu_mem_size, PROT_READ | PROT_WRITE, MAP_SHARED, cpufd, 0);
-	if (cpu_mem == MAP_FAILED) {
-		printf("cpu mmap failed (%d)\n", errno);
-		return 1;
-	}
-	int vm_mem_size = 96 << 10;
-	void* vm_mem = mmap(0, vm_mem_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-	if (vm_mem == MAP_FAILED) {
-		printf("mmap failed (%d)\n", errno);
-		return 1;
-	}
-	struct kvm_text kvm_text;
-	kvm_text.typ = text_type;
-	kvm_text.text = text;
-	kvm_text.size = text_size;
-	if (syz_kvm_setup_cpu(vmfd, cpufd, (uintptr_t)vm_mem, (uintptr_t)&kvm_text, 1, flags, 0, 0)) {
-		printf("syz_kvm_setup_cpu failed (%d)\n", errno);
-		return 1;
-	}
-	if (ioctl(cpufd, KVM_RUN, 0)) {
-		printf("KVM_RUN failed (%d)\n", errno);
-		return 1;
-	}
-	struct kvm_regs regs;
-	if (ioctl(cpufd, KVM_GET_REGS, &regs)) {
-		printf("KVM_GET_REGS failed (%d)\n", errno);
-		dump_cpu_state(cpufd, (char*)vm_mem);
-		return 1;
-	}
-	if (cpu_mem->exit_reason != reason) {
-		printf("KVM_RUN exit reason %d, expect %d\n", cpu_mem->exit_reason, reason);
-		if (cpu_mem->exit_reason == KVM_EXIT_FAIL_ENTRY)
-			printf("hardware exit reason 0x%llx\n", cpu_mem->fail_entry.hardware_entry_failure_reason);
-		dump_cpu_state(cpufd, (char*)vm_mem);
-		return 1;
-	}
-	if (check_rax && regs.rax != 0xbadc0de) {
-		printf("wrong result: rax=0x%llx\n", (long long)regs.rax);
-		dump_cpu_state(cpufd, (char*)vm_mem);
-		return 1;
-	}
-	munmap(vm_mem, vm_mem_size);
-	munmap(cpu_mem, cpu_mem_size);
-	close(cpufd);
-	close(vmfd);
-	close(kvmfd);
-	return 0;
-}
-
-extern "C" int test_kvm()
-{
-	int res;
-
-	unsigned ver = host_kernel_version();
-	printf("host kernel version %u\n", ver);
-
-	// TODO: test VM mode.
-	//const char text16_vm[] = "\x48\xc7\xc3\xde\xc0\xad\x0b\x90\x90\x48\xc7\xc0\xef\xcd\xab\x00\xf4";
-	//if (res = test_one(64, text16_vm, sizeof(text16_vm) - 1, KVM_SETUP_VM, KVM_EXIT_HLT, true))
-	//	return res;
-
-	/// TODO: test code executed in interrupt handlers.
-	//const char text32_div0[] = "\x31\xc0\xf7\xf0";
-	//if (res = test_one(32, text32_div0, sizeof(text32_div0)-1, 0, KVM_EXIT_HLT, true))
-	//	return res;
-
-	const char text8[] = "\x66\xb8\xde\xc0\xad\x0b";
-	if (res = test_one(8, text8, sizeof(text8) - 1, 0, KVM_EXIT_HLT, true))
-		return res;
-	if (res = test_one(8, text8, sizeof(text8) - 1, KVM_SETUP_VIRT86, KVM_EXIT_SHUTDOWN, true))
-		return res;
-	if (res = test_one(8, text8, sizeof(text8) - 1, KVM_SETUP_VIRT86 | KVM_SETUP_PAGING, KVM_EXIT_SHUTDOWN, true))
-		return res;
-
-	const char text16[] = "\x66\xb8\xde\xc0\xad\x0b";
-	if (res = test_one(16, text16, sizeof(text16) - 1, 0, KVM_EXIT_HLT, true))
-		return res;
-	if (res = test_one(16, text16, sizeof(text16) - 1, KVM_SETUP_CPL3, KVM_EXIT_SHUTDOWN, true))
-		return res;
-
-	const char text32[] = "\xb8\xde\xc0\xad\x0b";
-	if (res = test_one(32, text32, sizeof(text32) - 1, 0, KVM_EXIT_HLT, true))
-		return res;
-	if (res = test_one(32, text32, sizeof(text32) - 1, KVM_SETUP_PAGING, KVM_EXIT_HLT, true))
-		return res;
-	if (res = test_one(32, text32, sizeof(text32) - 1, KVM_SETUP_CPL3, KVM_EXIT_SHUTDOWN, true))
-		return res;
-
-	const char text64[] = "\x90\xb8\xde\xc0\xad\x0b";
-	if (res = test_one(64, text64, sizeof(text64) - 1, 0, KVM_EXIT_HLT, true))
-		return res;
-	if (res = test_one(64, text64, sizeof(text64) - 1, KVM_SETUP_PAGING, KVM_EXIT_HLT, true))
-		return res;
-	if (res = test_one(64, text64, sizeof(text64) - 1, KVM_SETUP_CPL3, KVM_EXIT_SHUTDOWN, true))
-		return res;
-
-	const char text64_sysenter[] = "\xb8\xde\xc0\xad\x0b\x0f\x34";
-	if (res = test_one(64, text64_sysenter, sizeof(text64_sysenter) - 1, KVM_SETUP_CPL3, KVM_EXIT_SHUTDOWN, true))
-		return res;
-
-	// Note: SMM does not work on 3.13 kernels.
-	if (ver >= 404) {
-		const char text8_smm[] = "\x66\xb8\xde\xc0\xad\x0b";
-		if (res = test_one(8, text8_smm, sizeof(text8_smm) - 1, KVM_SETUP_SMM, KVM_EXIT_HLT, true))
-			return res;
-		if (res = test_one(8, text8_smm, sizeof(text8_smm) - 1, KVM_SETUP_SMM | KVM_SETUP_PROTECTED, KVM_EXIT_HLT, true))
-			return res;
-
-		//const char text32_smm[] = "\xb8\xde\xc0\xad\x0b";
-		if (res = test_one(32, text8_smm, sizeof(text8_smm) - 1, KVM_SETUP_SMM, KVM_EXIT_HLT, true))
-			return res;
-
-		// Also ensure that we are actually in SMM.
-		// If we do MOV to RAX and then RSM, RAX will be restored to host value so RAX check will fail.
-		// So instead we execute just RSM, if we are in SMM we will get KVM_EXIT_HLT, otherwise KVM_EXIT_INTERNAL_ERROR.
-		const char text_rsm[] = "\x0f\xaa";
-		if (res = test_one(8, text_rsm, sizeof(text_rsm) - 1, KVM_SETUP_SMM, KVM_EXIT_HLT, false))
-			return res;
-		if (res = test_one(32, text_rsm, sizeof(text_rsm) - 1, KVM_SETUP_SMM, KVM_EXIT_HLT, false))
-			return res;
-	}
-
-	return 0;
-}
-
-static unsigned host_kernel_version()
-{
-	struct utsname name;
-	if (uname(&name)) {
-		printf("uname failed (%d)\n", errno);
-		doexit(1);
-	}
-	unsigned major = atoi(name.release);
-	unsigned minor = 0;
-	if (strchr(name.release, '.'))
-		minor = atoi(strchr(name.release, '.') + 1);
-	return major * 100 + minor;
-}
-
-static void dump_seg(const char* name, struct kvm_segment* seg)
-{
-	printf("%s: base=0x%llx limit=0x%x sel=0x%x type=%d p=%d dpl=%d, db=%d s=%d l=%d g=%d\n",
-	       name, seg->base, seg->limit, seg->selector, seg->type, seg->present, seg->dpl, seg->db, seg->s, seg->l, seg->g);
-}
-
-static void dump_cpu_state(int cpufd, char* vm_mem)
-{
-	struct kvm_sregs sregs;
-	if (ioctl(cpufd, KVM_GET_SREGS, &sregs)) {
-		printf("KVM_GET_SREGS failed (%d)\n", errno);
-		return;
-	}
-	struct kvm_regs regs;
-	if (ioctl(cpufd, KVM_GET_REGS, &regs)) {
-		printf("KVM_GET_REGS failed (%d)\n", errno);
-		return;
-	}
-	printf("RIP=0x%llx RAX=0x%llx RDX=0x%llx RCX=0x%llx RBX=0x%llx CF=%d ZF=%d\n",
-	       regs.rip, regs.rax, regs.rdx, regs.rcx, regs.rbx, !!(regs.rflags & (1 << 0)), !!(regs.rflags & (1 << 6)));
-	printf("CR0=0x%llx CR2=0x%llx CR4=0x%llx EFER=0x%llx\n",
-	       sregs.cr0, sregs.cr2, sregs.cr4, sregs.efer);
-	dump_seg("CS", &sregs.cs);
-	dump_seg("SS", &sregs.ss);
-	dump_seg("DS", &sregs.ds);
-
-	if (false) {
-		printf("memory:\n");
-		for (int i = 0; i < 0x80; i++)
-			printf("0x%02x: 0x%02x\n", i, ((unsigned char*)vm_mem)[i]);
-	}
-
-	if (false) {
-		printf("vmcs:\n");
-		const int vmcs_size = 0x1000;
-		for (int i = 0; i < vmcs_size / 8; i += 4) {
-			printf("0x%04x: 0x%016llx 0x%016llx 0x%016llx 0x%016llx\n", i,
-			       ((long long*)vm_mem)[i], ((long long*)vm_mem)[i + 1], ((long long*)vm_mem)[i + 2], ((long long*)vm_mem)[i + 3]);
-		}
-	}
-}