ok  	github.com/google/syzkaller/dashboard/app	(cached)
?   	github.com/google/syzkaller/dashboard/dashapi	[no test files]
?   	github.com/google/syzkaller/executor	[no test files]
ok  	github.com/google/syzkaller/pkg/ast	(cached)
ok  	github.com/google/syzkaller/pkg/bisect	(cached)
ok  	github.com/google/syzkaller/pkg/build	(cached)
?   	github.com/google/syzkaller/pkg/cmdprof	[no test files]
ok  	github.com/google/syzkaller/pkg/compiler	(cached)
ok  	github.com/google/syzkaller/pkg/config	(cached)
?   	github.com/google/syzkaller/pkg/cover	[no test files]
--- FAIL: TestGenerate (1.41s)
    --- FAIL: TestGenerate/netbsd/amd64 (0.06s)
    	csource_test.go:67: seed=1590055519656505862
        --- FAIL: TestGenerate/netbsd/amd64/0 (0.19s)
        	csource_test.go:123: opts: {Threaded:false Collide:false Repeat:true RepeatTimes:0 Procs:0 Sandbox:none Fault:false FaultCall:0 FaultNth:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false UseTmpDir:true HandleSegv:false Repro:false Trace:false}
        		program:
        		socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
        		getpeername$unix(r1, &(0x7f0000000040)=@abs, &(0x7f0000000080)=0x8)
        		lseek(r0, 0x5, 0x1)
        		access(&(0x7f00000000c0)='./file0\x00', 0x2)
        		r2 = socket$unix(0x1, 0x1, 0x0)
        		recvmsg(r2, &(0x7f00000014c0)={&(0x7f0000000100)=@in6, 0xc, &(0x7f0000001340)=[{&(0x7f0000000140)=""/77, 0x4d}, {&(0x7f00000001c0)=""/141, 0x8d}, {&(0x7f0000000280)=""/37, 0x25}, {&(0x7f00000002c0)=""/4096, 0x1000}, {&(0x7f00000012c0)=""/95, 0x5f}], 0x5, &(0x7f00000013c0)=""/216, 0xd8}, 0x40)
        		r3 = shmget(0x1, 0x3000, 0x60, &(0x7f0000ffc000/0x3000)=nil)
        		shmctl$SHM_UNLOCK(r3, 0x4)
        		r4 = socket$inet6(0x18, 0x5, 0x3e)
        		mmap(&(0x7f0000ffd000/0x2000)=nil, 0x2000, 0x1, 0x210, r4, 0x0, 0x100000000)
        		syz_emit_ethernet(0x7e, &(0x7f0000000000)="5ecad8bb627a3a76504ad2e03a196c8c75bbf978bba98c2df5e26a5d25f84e083de8f27b7ffeda581b9adc9aaeeb97db433822dbbbf3a90027384abb2e614327b7ddd4bcbb8704d575563b2ecc9b13ebcc1d5f0ad4fd250a79a3983b5405aae03655030e160b22a661f01cabaaf0fe28fded43edeeeaba8e29e7a55ed160")
        		syz_execute_func(&(0x7f0000000080)="c441b37d6716c4c1195d3cc463a6f6b3865f6464400f91fcc402b58e450cd310faf20f2b31c4c1eddd690bc4c20d0cd1")
        		syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x2)
        		r5 = syz_usb_connect(0x374, 0x39, &(0x7f0000000100)="00304ff9823a6145afcfabe59e7b448af51913099566d6b4994463d52ff70c87d95bd658f313dd8f6ef2ae26b130a296ec426064b796661a0a", &(0x7f0000000140)="8eb12c0b12b9e810700f13d73040087e8a51c0e0504623d6843451ccdffce9")
        		syz_usb_disconnect(r5)
        		
        	csource_test.go:124: failed to build program:
        		// autogenerated by syzkaller (https://github.com/google/syzkaller)
        		
        		#define _GNU_SOURCE 
        		
        		#include <dev/usb/usb.h>
        		#include <dev/usb/usbhid.h>
        		#include <dev/usb/vhci.h>
        		#include <dirent.h>
        		#include <endian.h>
        		#include <fcntl.h>
        		#include <pwd.h>
        		#include <signal.h>
        		#include <stdarg.h>
        		#include <stdbool.h>
        		#include <stdint.h>
        		#include <stdio.h>
        		#include <stdlib.h>
        		#include <string.h>
        		#include <sys/ioctl.h>
        		#include <sys/resource.h>
        		#include <sys/stat.h>
        		#include <sys/syscall.h>
        		#include <sys/types.h>
        		#include <sys/wait.h>
        		#include <time.h>
        		#include <unistd.h>
        		
        		static unsigned long long procid;
        		
        		static void kill_and_wait(int pid, int* status)
        		{
        			kill(pid, SIGKILL);
        			while (waitpid(-1, status, 0) != pid) {
        			}
        		}
        		
        		static void sleep_ms(uint64_t ms)
        		{
        			usleep(ms * 1000);
        		}
        		
        		static uint64_t current_time_ms(void)
        		{
        			struct timespec ts;
        			if (clock_gettime(CLOCK_MONOTONIC, &ts))
        			exit(1);
        			return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
        		}
        		
        		static void use_temporary_dir(void)
        		{
        			char tmpdir_template[] = "./syzkaller.XXXXXX";
        			char* tmpdir = mkdtemp(tmpdir_template);
        			if (!tmpdir)
        			exit(1);
        			if (chmod(tmpdir, 0777))
        			exit(1);
        			if (chdir(tmpdir))
        			exit(1);
        		}
        		
        		static void remove_dir(const char* dir)
        		{
        			DIR* dp;
        			struct dirent* ep;
        			dp = opendir(dir);
        			if (dp == NULL)
        			exit(1);
        			while ((ep = readdir(dp))) {
        				if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
        					continue;
        				char filename[FILENAME_MAX];
        				snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
        				struct stat st;
        				if (lstat(filename, &st))
        			exit(1);
        				if (S_ISDIR(st.st_mode)) {
        					remove_dir(filename);
        					continue;
        				}
        				if (unlink(filename))
        			exit(1);
        			}
        			closedir(dp);
        			if (rmdir(dir))
        			exit(1);
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		/*
        		 * Redefinitions to match the linux types used in common_usb.h.
        		 */
        		
        		struct usb_endpoint_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bEndpointAddress;
        			uint8_t bmAttributes;
        			uint16_t wMaxPacketSize;
        			uint8_t bInterval;
        			uint8_t bRefresh;
        			uint8_t bSynchAddress;
        		} __attribute__((packed));
        		
        		struct usb_device_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint16_t idVendor;
        			uint16_t idProduct;
        			uint16_t bcdDevice;
        			uint8_t iManufacturer;
        			uint8_t iProduct;
        			uint8_t iSerialNumber;
        			uint8_t bNumConfigurations;
        		} __attribute__((packed));
        		
        		struct usb_config_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t wTotalLength;
        			uint8_t bNumInterfaces;
        			uint8_t bConfigurationValue;
        			uint8_t iConfiguration;
        			uint8_t bmAttributes;
        			uint8_t bMaxPower;
        		} __attribute__((packed));
        		
        		struct usb_interface_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bNumEndpoints;
        			uint8_t bInterfaceClass;
        			uint8_t bInterfaceSubClass;
        			uint8_t bInterfaceProtocol;
        			uint8_t iInterface;
        		} __attribute__((packed));
        		
        		struct usb_ctrlrequest {
        			uint8_t bRequestType;
        			uint8_t bRequest;
        			uint16_t wValue;
        			uint16_t wIndex;
        			uint16_t wLength;
        		} __attribute__((packed));
        		
        		struct usb_qualifier_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint8_t bNumConfigurations;
        			uint8_t bRESERVED;
        		} __attribute__((packed));
        		
        		#define USB_TYPE_MASK (0x03 << 5)
        		#define USB_TYPE_STANDARD (0x00 << 5)
        		#define USB_TYPE_CLASS (0x01 << 5)
        		#define USB_TYPE_VENDOR (0x02 << 5)
        		#define USB_TYPE_RESERVED (0x03 << 5)
        		
        		#define USB_DT_DEVICE 0x01
        		#define USB_DT_CONFIG 0x02
        		#define USB_DT_STRING 0x03
        		#define USB_DT_INTERFACE 0x04
        		#define USB_DT_ENDPOINT 0x05
        		#define USB_DT_DEVICE_QUALIFIER 0x06
        		#define USB_DT_OTHER_SPEED_CONFIG 0x07
        		#define USB_DT_INTERFACE_POWER 0x08
        		#define USB_DT_OTG 0x09
        		#define USB_DT_DEBUG 0x0a
        		#define USB_DT_INTERFACE_ASSOCIATION 0x0b
        		#define USB_DT_SECURITY 0x0c
        		#define USB_DT_KEY 0x0d
        		#define USB_DT_ENCRYPTION_TYPE 0x0e
        		#define USB_DT_BOS 0x0f
        		#define USB_DT_DEVICE_CAPABILITY 0x10
        		#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
        		#define USB_DT_WIRE_ADAPTER 0x21
        		#define USB_DT_RPIPE 0x22
        		#define USB_DT_CS_RADIO_CONTROL 0x23
        		#define USB_DT_PIPE_USAGE 0x24
        		#define USB_DT_SS_ENDPOINT_COMP 0x30
        		#define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31
        		
        		#define USB_REQ_GET_STATUS 0x00
        		#define USB_REQ_CLEAR_FEATURE 0x01
        		#define USB_REQ_SET_FEATURE 0x03
        		#define USB_REQ_SET_ADDRESS 0x05
        		#define USB_REQ_GET_DESCRIPTOR 0x06
        		#define USB_REQ_SET_DESCRIPTOR 0x07
        		#define USB_REQ_GET_CONFIGURATION 0x08
        		#define USB_REQ_SET_CONFIGURATION 0x09
        		#define USB_REQ_GET_INTERFACE 0x0A
        		#define USB_REQ_SET_INTERFACE 0x0B
        		#define USB_REQ_SYNCH_FRAME 0x0C
        		#define USB_REQ_SET_SEL 0x30
        		#define USB_REQ_SET_ISOCH_DELAY 0x31
        		
        		#define USB_REQ_SET_ENCRYPTION 0x0D
        		#define USB_REQ_GET_ENCRYPTION 0x0E
        		#define USB_REQ_RPIPE_ABORT 0x0E
        		#define USB_REQ_SET_HANDSHAKE 0x0F
        		#define USB_REQ_RPIPE_RESET 0x0F
        		#define USB_REQ_GET_HANDSHAKE 0x10
        		#define USB_REQ_SET_CONNECTION 0x11
        		#define USB_REQ_SET_SECURITY_DATA 0x12
        		#define USB_REQ_GET_SECURITY_DATA 0x13
        		#define USB_REQ_SET_WUSB_DATA 0x14
        		#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
        		#define USB_REQ_LOOPBACK_DATA_READ 0x16
        		#define USB_REQ_SET_INTERFACE_DS 0x17
        		
        		#define USB_REQ_GET_PARTNER_PDO 20
        		#define USB_REQ_GET_BATTERY_STATUS 21
        		#define USB_REQ_SET_PDO 22
        		#define USB_REQ_GET_VDM 23
        		#define USB_REQ_SEND_VDM 24
        		
        		#define USB_MAX_IFACE_NUM 4
        		#define USB_MAX_EP_NUM 32
        		#define USB_MAX_FDS 6
        		
        		struct usb_endpoint_index {
        			struct usb_endpoint_descriptor desc;
        			int handle;
        		};
        		
        		struct usb_iface_index {
        			struct usb_interface_descriptor* iface;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bInterfaceClass;
        			struct usb_endpoint_index eps[USB_MAX_EP_NUM];
        			int eps_num;
        		};
        		
        		struct usb_device_index {
        			struct usb_device_descriptor* dev;
        			struct usb_config_descriptor* config;
        			uint8_t bDeviceClass;
        			uint8_t bMaxPower;
        			int config_length;
        			struct usb_iface_index ifaces[USB_MAX_IFACE_NUM];
        			int ifaces_num;
        			int iface_cur;
        		};
        		
        		struct usb_info {
        			int fd;
        			struct usb_device_index index;
        		};
        		
        		static struct usb_info usb_devices[USB_MAX_FDS];
        		static int usb_devices_num;
        		
        		static bool parse_usb_descriptor(const char* buffer, size_t length, struct usb_device_index* index)
        		{
        			if (length < sizeof(*index->dev) + sizeof(*index->config))
        				return false;
        			memset(index, 0, sizeof(*index));
        			index->dev = (struct usb_device_descriptor*)buffer;
        			index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev));
        			index->bDeviceClass = index->dev->bDeviceClass;
        			index->bMaxPower = index->config->bMaxPower;
        			index->config_length = length - sizeof(*index->dev);
        			index->iface_cur = -1;
        			size_t offset = 0;
        			while (true) {
        				if (offset + 1 >= length)
        					break;
        				uint8_t desc_length = buffer[offset];
        				uint8_t desc_type = buffer[offset + 1];
        				if (desc_length <= 2)
        					break;
        				if (offset + desc_length > length)
        					break;
        				if (desc_type == USB_DT_INTERFACE && index->ifaces_num < USB_MAX_IFACE_NUM) {
        					struct usb_interface_descriptor* iface = (struct usb_interface_descriptor*)(buffer + offset);
        					index->ifaces[index->ifaces_num].iface = iface;
        					index->ifaces[index->ifaces_num].bInterfaceNumber = iface->bInterfaceNumber;
        					index->ifaces[index->ifaces_num].bAlternateSetting = iface->bAlternateSetting;
        					index->ifaces[index->ifaces_num].bInterfaceClass = iface->bInterfaceClass;
        					index->ifaces_num++;
        				}
        				if (desc_type == USB_DT_ENDPOINT && index->ifaces_num > 0) {
        					struct usb_iface_index* iface = &index->ifaces[index->ifaces_num - 1];
        					if (iface->eps_num < USB_MAX_EP_NUM) {
        						memcpy(&iface->eps[iface->eps_num].desc, buffer + offset, sizeof(iface->eps[iface->eps_num].desc));
        						iface->eps_num++;
        					}
        				}
        				offset += desc_length;
        			}
        			return true;
        		}
        		
        		static struct usb_device_index* add_usb_index(int fd, const char* dev, size_t dev_len)
        		{
        			int i = __atomic_fetch_add(&usb_devices_num, 1, __ATOMIC_RELAXED);
        			if (i >= USB_MAX_FDS)
        				return NULL;
        			int rv = 0;
        		rv = parse_usb_descriptor(dev, dev_len, &usb_devices[i].index);
        			if (!rv)
        				return NULL;
        			__atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE);
        			return &usb_devices[i].index;
        		}
        		
        		static struct usb_device_index* lookup_usb_index(int fd)
        		{
        			int i;
        			for (i = 0; i < USB_MAX_FDS; i++) {
        				if (__atomic_load_n(&usb_devices[i].fd, __ATOMIC_ACQUIRE) == fd) {
        					return &usb_devices[i].index;
        				}
        			}
        			return NULL;
        		}
        		
        		struct vusb_connect_string_descriptor {
        			uint32_t len;
        			char* str;
        		} __attribute__((packed));
        		
        		struct vusb_connect_descriptors {
        			uint32_t qual_len;
        			char* qual;
        			uint32_t bos_len;
        			char* bos;
        			uint32_t strs_len;
        			struct vusb_connect_string_descriptor strs[0];
        		} __attribute__((packed));
        		
        		static const char default_string[] = {
        		    8, USB_DT_STRING,
        		    's', 0, 'y', 0, 'z', 0
        		};
        		
        		static const char default_lang_id[] = {
        		    4, USB_DT_STRING,
        		    0x09, 0x04
        		};
        		
        		static bool lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs,
        						       const struct usb_ctrlrequest* ctrl,
        						       char** response_data, uint32_t* response_length)
        		{
        			struct usb_device_index* index = lookup_usb_index(fd);
        			uint8_t str_idx;
        			if (!index)
        				return false;
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_GET_DESCRIPTOR:
        					switch (ctrl->wValue >> 8) {
        					case USB_DT_DEVICE:
        						*response_data = (char*)index->dev;
        						*response_length = sizeof(*index->dev);
        						return true;
        					case USB_DT_CONFIG:
        						*response_data = (char*)index->config;
        						*response_length = index->config_length;
        						return true;
        					case USB_DT_STRING:
        						str_idx = (uint8_t)ctrl->wValue;
        						if (descs && str_idx < descs->strs_len) {
        							*response_data = descs->strs[str_idx].str;
        							*response_length = descs->strs[str_idx].len;
        							return true;
        						}
        						if (str_idx == 0) {
        							*response_data = (char*)&default_lang_id[0];
        							*response_length = default_lang_id[0];
        							return true;
        						}
        						*response_data = (char*)&default_string[0];
        						*response_length = default_string[0];
        						return true;
        					case USB_DT_BOS:
        						*response_data = descs->bos;
        						*response_length = descs->bos_len;
        						return true;
        					case USB_DT_DEVICE_QUALIFIER:
        						if (!descs->qual) {
        							struct usb_qualifier_descriptor* qual =
        							    (struct usb_qualifier_descriptor*)response_data;
        							qual->bLength = sizeof(*qual);
        							qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
        							qual->bcdUSB = index->dev->bcdUSB;
        							qual->bDeviceClass = index->dev->bDeviceClass;
        							qual->bDeviceSubClass = index->dev->bDeviceSubClass;
        							qual->bDeviceProtocol = index->dev->bDeviceProtocol;
        							qual->bMaxPacketSize0 = index->dev->bMaxPacketSize0;
        							qual->bNumConfigurations = index->dev->bNumConfigurations;
        							qual->bRESERVED = 0;
        							*response_length = sizeof(*qual);
        							return true;
        						}
        						*response_data = descs->qual;
        						*response_length = descs->qual_len;
        						return true;
        					default:
        						break;
        					}
        					break;
        				default:
        					break;
        				}
        				break;
        			default:
        				break;
        			}
        			return false;
        		}
        		
        		typedef bool (*lookup_connect_out_response_t)(int fd, const struct vusb_connect_descriptors* descs,
        							      const struct usb_ctrlrequest* ctrl, bool* done);
        		
        		static bool lookup_connect_response_out_generic(int fd, const struct vusb_connect_descriptors* descs,
        								const struct usb_ctrlrequest* ctrl, bool* done)
        		{
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_SET_CONFIGURATION:
        					*done = true;
        					return true;
        				default:
        					break;
        				}
        				break;
        			}
        			return false;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static int vhci_open(void)
        		{
        			return open("/dev/vhci", O_RDWR);
        		}
        		
        		static int vhci_setport(int fd, u_int port)
        		{
        			struct vhci_ioc_set_port args;
        			args.port = port;
        			return ioctl(fd, VHCI_IOC_SET_PORT, &args);
        		}
        		
        		static int vhci_usb_attach(int fd)
        		{
        			return ioctl(fd, VHCI_IOC_USB_ATTACH, NULL);
        		}
        		
        		static int vhci_usb_recv(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = read(fd, ptr, size);
        				if (done < 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		static int vhci_usb_send(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = write(fd, ptr, size);
        				if (done <= 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static volatile long syz_usb_connect_impl(uint64_t speed, uint64_t dev_len,
        							  const char* dev, const struct vusb_connect_descriptors* descs,
        							  lookup_connect_out_response_t lookup_connect_response_out)
        		{
        			struct usb_device_index* index;
        			int portnum, fd, rv;
        			bool done;
        			portnum = procid + 1;
        			if (!dev) {
        				return -1;
        			}
        			if (portnum != 1) {
        				/* For now, we support only one proc. */
        				return -1;
        			}
        			fd = vhci_open();
        			if (fd < 0) {
        				return -1;
        			}
        			index = add_usb_index(fd, dev, dev_len);
        			if (!index) {
        				goto err;
        			}
        			rv = vhci_setport(fd, portnum);
        			if (rv != 0) {
        				goto err;
        			}
        			rv = vhci_usb_attach(fd);
        			if (rv != 0) {
        				goto err;
        			}
        			done = false;
        			while (!done) {
        				vhci_request_t req;
        				rv = vhci_usb_recv(fd, &req, sizeof(req));
        				if (rv != 0) {
        					goto err;
        				}
        				if (req.type != VHCI_REQ_CTRL) {
        					goto err;
        				}
        				char* response_data = NULL;
        				uint32_t response_length = 0;
        				char data[4096];
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					bool response_found = false;
        		response_found = lookup_connect_response_in(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &response_data, &response_length);
        					if (!response_found) {
        						goto err;
        					}
        				} else {
        					if (!lookup_connect_response_out(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &done)) {
        						goto err;
        					}
        					response_data = NULL;
        					response_length = UGETW(req.u.ctrl.wLength);
        				}
        				if ((req.u.ctrl.bmRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        				    req.u.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
        					/* TODO: possibly revisit */
        				}
        				if (response_length > sizeof(data))
        					response_length = 0;
        				if ((uint32_t)UGETW(req.u.ctrl.wLength) < response_length)
        					response_length = UGETW(req.u.ctrl.wLength);
        				if (response_data)
        					memcpy(data, response_data, response_length);
        				else
        					memset(data, 0, response_length);
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					if (response_length > 0) {
        						vhci_response_t res;
        						res.size = response_length;
        						rv = vhci_usb_send(fd, &res, sizeof(res));
        						if (rv == 0)
        							rv = vhci_usb_send(fd, data, response_length);
        					}
        				} else {
        					rv = vhci_usb_recv(fd, data, response_length);
        				}
        				if (rv < 0) {
        					goto err;
        				}
        			}
        			sleep_ms(200);
        			return fd;
        		
        		err:
        			close(fd);
        			return -1;
        		}
        		
        		static volatile long syz_usb_connect(volatile long a0, volatile long a1,
        						     volatile long a2, volatile long a3)
        		{
        			uint64_t speed = a0;
        			uint64_t dev_len = a1;
        			const char* dev = (const char*)a2;
        			const struct vusb_connect_descriptors* descs = (const struct vusb_connect_descriptors*)a3;
        			return syz_usb_connect_impl(speed, dev_len, dev, descs,
        						    &lookup_connect_response_out_generic);
        		}
        		
        		static volatile long syz_usb_disconnect(volatile long a0)
        		{
        			int fd = a0;
        			int rv = close(fd);
        			sleep_ms(200);
        			return rv;
        		}
        		
        		static void sandbox_common()
        		{
        			if (setsid() == -1)
        			exit(1);
        			struct rlimit rlim;
        			rlim.rlim_cur = rlim.rlim_max = 8 << 20;
        			setrlimit(RLIMIT_MEMLOCK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_FSIZE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_STACK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 0;
        			setrlimit(RLIMIT_CORE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 256;
        			setrlimit(RLIMIT_NOFILE, &rlim);
        		}
        		
        		static void loop();
        		
        		static int do_sandbox_none(void)
        		{
        			sandbox_common();
        			loop();
        			return 0;
        		}
        		
        		static long syz_execute_func(volatile long text)
        		{
        			volatile long p[8] = {0};
        			(void)p;
        			asm volatile("" ::"r"(0l), "r"(1l), "r"(2l), "r"(3l), "r"(4l), "r"(5l), "r"(6l),
        				     "r"(7l), "r"(8l), "r"(9l), "r"(10l), "r"(11l), "r"(12l), "r"(13l));
        		((void (*)(void))(text))();
        			return 0;
        		}
        		
        		static void execute_one(void);
        		
        		#define WAIT_FLAGS 0
        		
        		static void loop(void)
        		{
        			int iter;
        			for (iter = 0;; iter++) {
        				char cwdbuf[32];
        				sprintf(cwdbuf, "./%d", iter);
        				if (mkdir(cwdbuf, 0777))
        			exit(1);
        				int pid = fork();
        				if (pid < 0)
        			exit(1);
        				if (pid == 0) {
        					if (chdir(cwdbuf))
        			exit(1);
        					execute_one();
        					exit(0);
        				}
        				int status = 0;
        				uint64_t start = current_time_ms();
        				for (;;) {
        					if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        						break;
        					sleep_ms(1);
        					if (current_time_ms() - start < 5 * 1000)
        						continue;
        					kill_and_wait(pid, &status);
        					break;
        				}
        				remove_dir(cwdbuf);
        			}
        		}
        		
        		#ifndef SYS_access
        		#define SYS_access 33
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_lseek
        		#define SYS_lseek 199
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_shmctl
        		#define SYS_shmctl 443
        		#endif
        		#ifndef SYS_shmget
        		#define SYS_shmget 231
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_socketpair
        		#define SYS_socketpair 135
        		#endif
        		
        		uint64_t r[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_one(void)
        		{
        				intptr_t res = 0;
        			res = syscall(SYS_socketpair, 1ul, 1ul, 0, 0x20000000ul);
        			if (res != -1) {
        		r[0] = *(uint32_t*)0x20000000;
        		r[1] = *(uint32_t*)0x20000004;
        			}
        		*(uint32_t*)0x20000080 = 8;
        			syscall(SYS_getpeername, r[1], 0x20000040ul, 0x20000080ul);
        			syscall(SYS_lseek, r[0], 5ul, 1ul);
        		memcpy((void*)0x200000c0, "./file0\000", 8);
        			syscall(SYS_access, 0x200000c0ul, 2ul);
        			res = syscall(SYS_socket, 1ul, 1ul, 0);
        			if (res != -1)
        				r[2] = res;
        		*(uint64_t*)0x200014c0 = 0x20000100;
        		*(uint32_t*)0x200014c8 = 0xc;
        		*(uint64_t*)0x200014d0 = 0x20001340;
        		*(uint64_t*)0x20001340 = 0x20000140;
        		*(uint64_t*)0x20001348 = 0x4d;
        		*(uint64_t*)0x20001350 = 0x200001c0;
        		*(uint64_t*)0x20001358 = 0x8d;
        		*(uint64_t*)0x20001360 = 0x20000280;
        		*(uint64_t*)0x20001368 = 0x25;
        		*(uint64_t*)0x20001370 = 0x200002c0;
        		*(uint64_t*)0x20001378 = 0x1000;
        		*(uint64_t*)0x20001380 = 0x200012c0;
        		*(uint64_t*)0x20001388 = 0x5f;
        		*(uint64_t*)0x200014d8 = 5;
        		*(uint64_t*)0x200014e0 = 0x200013c0;
        		*(uint64_t*)0x200014e8 = 0xd8;
        		*(uint32_t*)0x200014f0 = 0;
        			syscall(SYS_recvmsg, r[2], 0x200014c0ul, 0x40ul);
        			res = syscall(SYS_shmget, 0x798dd814ul, 0x3000ul, 0x60ul, 0x20ffc000ul);
        			if (res != -1)
        				r[3] = res;
        			syscall(SYS_shmctl, r[3], 4ul, 0);
        			res = syscall(SYS_socket, 0x18ul, 5ul, 0x3e);
        			if (res != -1)
        				r[4] = res;
        			syscall(SYS_mmap, 0x20ffd000ul, 0x2000ul, 1ul, 0x210ul, r[4], 0ul, 0x100000000ul);
        		memcpy((void*)0x20000000, "\x5e\xca\xd8\xbb\x62\x7a\x3a\x76\x50\x4a\xd2\xe0\x3a\x19\x6c\x8c\x75\xbb\xf9\x78\xbb\xa9\x8c\x2d\xf5\xe2\x6a\x5d\x25\xf8\x4e\x08\x3d\xe8\xf2\x7b\x7f\xfe\xda\x58\x1b\x9a\xdc\x9a\xae\xeb\x97\xdb\x43\x38\x22\xdb\xbb\xf3\xa9\x00\x27\x38\x4a\xbb\x2e\x61\x43\x27\xb7\xdd\xd4\xbc\xbb\x87\x04\xd5\x75\x56\x3b\x2e\xcc\x9b\x13\xeb\xcc\x1d\x5f\x0a\xd4\xfd\x25\x0a\x79\xa3\x98\x3b\x54\x05\xaa\xe0\x36\x55\x03\x0e\x16\x0b\x22\xa6\x61\xf0\x1c\xab\xaa\xf0\xfe\x28\xfd\xed\x43\xed\xee\xea\xba\x8e\x29\xe7\xa5\x5e\xd1\x60", 126);
        		memcpy((void*)0x20000080, "\xc4\x41\xb3\x7d\x67\x16\xc4\xc1\x19\x5d\x3c\xc4\x63\xa6\xf6\xb3\x86\x5f\x64\x64\x40\x0f\x91\xfc\xc4\x02\xb5\x8e\x45\x0c\xd3\x10\xfa\xf2\x0f\x2b\x31\xc4\xc1\xed\xdd\x69\x0b\xc4\xc2\x0d\x0c\xd1", 48);
        			syz_execute_func(0x20000080);
        		memcpy((void*)0x20000100, "\x00\x30\x4f\xf9\x82\x3a\x61\x45\xaf\xcf\xab\xe5\x9e\x7b\x44\x8a\xf5\x19\x13\x09\x95\x66\xd6\xb4\x99\x44\x63\xd5\x2f\xf7\x0c\x87\xd9\x5b\xd6\x58\xf3\x13\xdd\x8f\x6e\xf2\xae\x26\xb1\x30\xa2\x96\xec\x42\x60\x64\xb7\x96\x66\x1a\x0a", 57);
        		memcpy((void*)0x20000140, "\x8e\xb1\x2c\x0b\x12\xb9\xe8\x10\x70\x0f\x13\xd7\x30\x40\x08\x7e\x8a\x51\xc0\xe0\x50\x46\x23\xd6\x84\x34\x51\xcc\xdf\xfc\xe9", 31);
        			res = syz_usb_connect(0x374, 0x39, 0x20000100, 0x20000140);
        			if (res != -1)
        				r[5] = res;
        			syz_usb_disconnect(r[5]);
        		
        		}
        		int main(void)
        		{
        				syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul);
        					use_temporary_dir();
        					do_sandbox_none();
        			return 0;
        		}
        		
        		<stdin>: In function 'syz_usb_connect_impl':
        		<stdin>:546:63: error: unknown type name 'usb_ctrlrequest'
        		<stdin>:551:55: error: unknown type name 'usb_ctrlrequest'
        		
        		compiler invocation: /syzkaller/netbsd/src/../tools/bin/x86_64--netbsd-g++ [-o /tmp/syz-executor446460717 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/11 (0.20s)
        	csource_test.go:123: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Sandbox:none Fault:false FaultCall:0 FaultNth:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false UseTmpDir:true HandleSegv:true Repro:false Trace:false}
        		program:
        		socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
        		getpeername$unix(r1, &(0x7f0000000040)=@abs, &(0x7f0000000080)=0x8)
        		lseek(r0, 0x5, 0x1)
        		access(&(0x7f00000000c0)='./file0\x00', 0x2)
        		r2 = socket$unix(0x1, 0x1, 0x0)
        		recvmsg(r2, &(0x7f00000014c0)={&(0x7f0000000100)=@in6, 0xc, &(0x7f0000001340)=[{&(0x7f0000000140)=""/77, 0x4d}, {&(0x7f00000001c0)=""/141, 0x8d}, {&(0x7f0000000280)=""/37, 0x25}, {&(0x7f00000002c0)=""/4096, 0x1000}, {&(0x7f00000012c0)=""/95, 0x5f}], 0x5, &(0x7f00000013c0)=""/216, 0xd8}, 0x40)
        		r3 = shmget(0x1, 0x3000, 0x60, &(0x7f0000ffc000/0x3000)=nil)
        		shmctl$SHM_UNLOCK(r3, 0x4)
        		r4 = socket$inet6(0x18, 0x5, 0x3e)
        		mmap(&(0x7f0000ffd000/0x2000)=nil, 0x2000, 0x1, 0x210, r4, 0x0, 0x100000000)
        		syz_emit_ethernet(0x7e, &(0x7f0000000000)="5ecad8bb627a3a76504ad2e03a196c8c75bbf978bba98c2df5e26a5d25f84e083de8f27b7ffeda581b9adc9aaeeb97db433822dbbbf3a90027384abb2e614327b7ddd4bcbb8704d575563b2ecc9b13ebcc1d5f0ad4fd250a79a3983b5405aae03655030e160b22a661f01cabaaf0fe28fded43edeeeaba8e29e7a55ed160")
        		syz_execute_func(&(0x7f0000000080)="c441b37d6716c4c1195d3cc463a6f6b3865f6464400f91fcc402b58e450cd310faf20f2b31c4c1eddd690bc4c20d0cd1")
        		syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x2)
        		r5 = syz_usb_connect(0x374, 0x39, &(0x7f0000000100)="00304ff9823a6145afcfabe59e7b448af51913099566d6b4994463d52ff70c87d95bd658f313dd8f6ef2ae26b130a296ec426064b796661a0a", &(0x7f0000000140)="8eb12c0b12b9e810700f13d73040087e8a51c0e0504623d6843451ccdffce9")
        		syz_usb_disconnect(r5)
        		
        	csource_test.go:124: failed to build program:
        		// autogenerated by syzkaller (https://github.com/google/syzkaller)
        		
        		#define _GNU_SOURCE 
        		
        		#include <dev/usb/usb.h>
        		#include <dev/usb/usbhid.h>
        		#include <dev/usb/vhci.h>
        		#include <dirent.h>
        		#include <endian.h>
        		#include <errno.h>
        		#include <fcntl.h>
        		#include <pthread.h>
        		#include <pwd.h>
        		#include <setjmp.h>
        		#include <signal.h>
        		#include <stdarg.h>
        		#include <stdbool.h>
        		#include <stdint.h>
        		#include <stdio.h>
        		#include <stdlib.h>
        		#include <string.h>
        		#include <sys/ioctl.h>
        		#include <sys/resource.h>
        		#include <sys/stat.h>
        		#include <sys/syscall.h>
        		#include <sys/types.h>
        		#include <sys/wait.h>
        		#include <time.h>
        		#include <unistd.h>
        		
        		static unsigned long long procid;
        		
        		static __thread int skip_segv;
        		static __thread jmp_buf segv_env;
        		
        		static void segv_handler(int sig, siginfo_t* info, void* ctx)
        		{
        			uintptr_t addr = (uintptr_t)info->si_addr;
        			const uintptr_t prog_start = 1 << 20;
        			const uintptr_t prog_end = 100 << 20;
        			if (__atomic_load_n(&skip_segv, __ATOMIC_RELAXED) && (addr < prog_start || addr > prog_end)) {
        				_longjmp(segv_env, 1);
        			}
        			exit(sig);
        		}
        		
        		static void install_segv_handler(void)
        		{
        			struct sigaction sa;
        			memset(&sa, 0, sizeof(sa));
        			sa.sa_sigaction = segv_handler;
        			sa.sa_flags = SA_NODEFER | SA_SIGINFO;
        			sigaction(SIGSEGV, &sa, NULL);
        			sigaction(SIGBUS, &sa, NULL);
        		}
        		
        		#define NONFAILING(...) { __atomic_fetch_add(&skip_segv, 1, __ATOMIC_SEQ_CST); if (_setjmp(segv_env) == 0) { __VA_ARGS__; } __atomic_fetch_sub(&skip_segv, 1, __ATOMIC_SEQ_CST); }
        		
        		static void kill_and_wait(int pid, int* status)
        		{
        			kill(pid, SIGKILL);
        			while (waitpid(-1, status, 0) != pid) {
        			}
        		}
        		
        		static void sleep_ms(uint64_t ms)
        		{
        			usleep(ms * 1000);
        		}
        		
        		static uint64_t current_time_ms(void)
        		{
        			struct timespec ts;
        			if (clock_gettime(CLOCK_MONOTONIC, &ts))
        			exit(1);
        			return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
        		}
        		
        		static void use_temporary_dir(void)
        		{
        			char tmpdir_template[] = "./syzkaller.XXXXXX";
        			char* tmpdir = mkdtemp(tmpdir_template);
        			if (!tmpdir)
        			exit(1);
        			if (chmod(tmpdir, 0777))
        			exit(1);
        			if (chdir(tmpdir))
        			exit(1);
        		}
        		
        		static void remove_dir(const char* dir)
        		{
        			DIR* dp;
        			struct dirent* ep;
        			dp = opendir(dir);
        			if (dp == NULL)
        			exit(1);
        			while ((ep = readdir(dp))) {
        				if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
        					continue;
        				char filename[FILENAME_MAX];
        				snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
        				struct stat st;
        				if (lstat(filename, &st))
        			exit(1);
        				if (S_ISDIR(st.st_mode)) {
        					remove_dir(filename);
        					continue;
        				}
        				if (unlink(filename))
        			exit(1);
        			}
        			closedir(dp);
        			if (rmdir(dir))
        			exit(1);
        		}
        		
        		static void thread_start(void* (*fn)(void*), void* arg)
        		{
        			pthread_t th;
        			pthread_attr_t attr;
        			pthread_attr_init(&attr);
        			pthread_attr_setstacksize(&attr, 128 << 10);
        			int i;
        			for (i = 0; i < 100; i++) {
        				if (pthread_create(&th, &attr, fn, arg) == 0) {
        					pthread_attr_destroy(&attr);
        					return;
        				}
        				if (errno == EAGAIN) {
        					usleep(50);
        					continue;
        				}
        				break;
        			}
        			exit(1);
        		}
        		
        		typedef struct {
        			pthread_mutex_t mu;
        			pthread_cond_t cv;
        			int state;
        		} event_t;
        		
        		static void event_init(event_t* ev)
        		{
        			if (pthread_mutex_init(&ev->mu, 0))
        			exit(1);
        			if (pthread_cond_init(&ev->cv, 0))
        			exit(1);
        			ev->state = 0;
        		}
        		
        		static void event_reset(event_t* ev)
        		{
        			ev->state = 0;
        		}
        		
        		static void event_set(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			if (ev->state)
        			exit(1);
        			ev->state = 1;
        			pthread_mutex_unlock(&ev->mu);
        			pthread_cond_broadcast(&ev->cv);
        		}
        		
        		static void event_wait(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			while (!ev->state)
        				pthread_cond_wait(&ev->cv, &ev->mu);
        			pthread_mutex_unlock(&ev->mu);
        		}
        		
        		static int event_isset(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		static int event_timedwait(event_t* ev, uint64_t timeout)
        		{
        			uint64_t start = current_time_ms();
        			uint64_t now = start;
        			pthread_mutex_lock(&ev->mu);
        			for (;;) {
        				if (ev->state)
        					break;
        				uint64_t remain = timeout - (now - start);
        				struct timespec ts;
        				ts.tv_sec = remain / 1000;
        				ts.tv_nsec = (remain % 1000) * 1000 * 1000;
        				pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
        				now = current_time_ms();
        				if (now - start > timeout)
        					break;
        			}
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		/*
        		 * Redefinitions to match the linux types used in common_usb.h.
        		 */
        		
        		struct usb_endpoint_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bEndpointAddress;
        			uint8_t bmAttributes;
        			uint16_t wMaxPacketSize;
        			uint8_t bInterval;
        			uint8_t bRefresh;
        			uint8_t bSynchAddress;
        		} __attribute__((packed));
        		
        		struct usb_device_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint16_t idVendor;
        			uint16_t idProduct;
        			uint16_t bcdDevice;
        			uint8_t iManufacturer;
        			uint8_t iProduct;
        			uint8_t iSerialNumber;
        			uint8_t bNumConfigurations;
        		} __attribute__((packed));
        		
        		struct usb_config_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t wTotalLength;
        			uint8_t bNumInterfaces;
        			uint8_t bConfigurationValue;
        			uint8_t iConfiguration;
        			uint8_t bmAttributes;
        			uint8_t bMaxPower;
        		} __attribute__((packed));
        		
        		struct usb_interface_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bNumEndpoints;
        			uint8_t bInterfaceClass;
        			uint8_t bInterfaceSubClass;
        			uint8_t bInterfaceProtocol;
        			uint8_t iInterface;
        		} __attribute__((packed));
        		
        		struct usb_ctrlrequest {
        			uint8_t bRequestType;
        			uint8_t bRequest;
        			uint16_t wValue;
        			uint16_t wIndex;
        			uint16_t wLength;
        		} __attribute__((packed));
        		
        		struct usb_qualifier_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint8_t bNumConfigurations;
        			uint8_t bRESERVED;
        		} __attribute__((packed));
        		
        		#define USB_TYPE_MASK (0x03 << 5)
        		#define USB_TYPE_STANDARD (0x00 << 5)
        		#define USB_TYPE_CLASS (0x01 << 5)
        		#define USB_TYPE_VENDOR (0x02 << 5)
        		#define USB_TYPE_RESERVED (0x03 << 5)
        		
        		#define USB_DT_DEVICE 0x01
        		#define USB_DT_CONFIG 0x02
        		#define USB_DT_STRING 0x03
        		#define USB_DT_INTERFACE 0x04
        		#define USB_DT_ENDPOINT 0x05
        		#define USB_DT_DEVICE_QUALIFIER 0x06
        		#define USB_DT_OTHER_SPEED_CONFIG 0x07
        		#define USB_DT_INTERFACE_POWER 0x08
        		#define USB_DT_OTG 0x09
        		#define USB_DT_DEBUG 0x0a
        		#define USB_DT_INTERFACE_ASSOCIATION 0x0b
        		#define USB_DT_SECURITY 0x0c
        		#define USB_DT_KEY 0x0d
        		#define USB_DT_ENCRYPTION_TYPE 0x0e
        		#define USB_DT_BOS 0x0f
        		#define USB_DT_DEVICE_CAPABILITY 0x10
        		#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
        		#define USB_DT_WIRE_ADAPTER 0x21
        		#define USB_DT_RPIPE 0x22
        		#define USB_DT_CS_RADIO_CONTROL 0x23
        		#define USB_DT_PIPE_USAGE 0x24
        		#define USB_DT_SS_ENDPOINT_COMP 0x30
        		#define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31
        		
        		#define USB_REQ_GET_STATUS 0x00
        		#define USB_REQ_CLEAR_FEATURE 0x01
        		#define USB_REQ_SET_FEATURE 0x03
        		#define USB_REQ_SET_ADDRESS 0x05
        		#define USB_REQ_GET_DESCRIPTOR 0x06
        		#define USB_REQ_SET_DESCRIPTOR 0x07
        		#define USB_REQ_GET_CONFIGURATION 0x08
        		#define USB_REQ_SET_CONFIGURATION 0x09
        		#define USB_REQ_GET_INTERFACE 0x0A
        		#define USB_REQ_SET_INTERFACE 0x0B
        		#define USB_REQ_SYNCH_FRAME 0x0C
        		#define USB_REQ_SET_SEL 0x30
        		#define USB_REQ_SET_ISOCH_DELAY 0x31
        		
        		#define USB_REQ_SET_ENCRYPTION 0x0D
        		#define USB_REQ_GET_ENCRYPTION 0x0E
        		#define USB_REQ_RPIPE_ABORT 0x0E
        		#define USB_REQ_SET_HANDSHAKE 0x0F
        		#define USB_REQ_RPIPE_RESET 0x0F
        		#define USB_REQ_GET_HANDSHAKE 0x10
        		#define USB_REQ_SET_CONNECTION 0x11
        		#define USB_REQ_SET_SECURITY_DATA 0x12
        		#define USB_REQ_GET_SECURITY_DATA 0x13
        		#define USB_REQ_SET_WUSB_DATA 0x14
        		#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
        		#define USB_REQ_LOOPBACK_DATA_READ 0x16
        		#define USB_REQ_SET_INTERFACE_DS 0x17
        		
        		#define USB_REQ_GET_PARTNER_PDO 20
        		#define USB_REQ_GET_BATTERY_STATUS 21
        		#define USB_REQ_SET_PDO 22
        		#define USB_REQ_GET_VDM 23
        		#define USB_REQ_SEND_VDM 24
        		
        		#define USB_MAX_IFACE_NUM 4
        		#define USB_MAX_EP_NUM 32
        		#define USB_MAX_FDS 6
        		
        		struct usb_endpoint_index {
        			struct usb_endpoint_descriptor desc;
        			int handle;
        		};
        		
        		struct usb_iface_index {
        			struct usb_interface_descriptor* iface;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bInterfaceClass;
        			struct usb_endpoint_index eps[USB_MAX_EP_NUM];
        			int eps_num;
        		};
        		
        		struct usb_device_index {
        			struct usb_device_descriptor* dev;
        			struct usb_config_descriptor* config;
        			uint8_t bDeviceClass;
        			uint8_t bMaxPower;
        			int config_length;
        			struct usb_iface_index ifaces[USB_MAX_IFACE_NUM];
        			int ifaces_num;
        			int iface_cur;
        		};
        		
        		struct usb_info {
        			int fd;
        			struct usb_device_index index;
        		};
        		
        		static struct usb_info usb_devices[USB_MAX_FDS];
        		static int usb_devices_num;
        		
        		static bool parse_usb_descriptor(const char* buffer, size_t length, struct usb_device_index* index)
        		{
        			if (length < sizeof(*index->dev) + sizeof(*index->config))
        				return false;
        			memset(index, 0, sizeof(*index));
        			index->dev = (struct usb_device_descriptor*)buffer;
        			index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev));
        			index->bDeviceClass = index->dev->bDeviceClass;
        			index->bMaxPower = index->config->bMaxPower;
        			index->config_length = length - sizeof(*index->dev);
        			index->iface_cur = -1;
        			size_t offset = 0;
        			while (true) {
        				if (offset + 1 >= length)
        					break;
        				uint8_t desc_length = buffer[offset];
        				uint8_t desc_type = buffer[offset + 1];
        				if (desc_length <= 2)
        					break;
        				if (offset + desc_length > length)
        					break;
        				if (desc_type == USB_DT_INTERFACE && index->ifaces_num < USB_MAX_IFACE_NUM) {
        					struct usb_interface_descriptor* iface = (struct usb_interface_descriptor*)(buffer + offset);
        					index->ifaces[index->ifaces_num].iface = iface;
        					index->ifaces[index->ifaces_num].bInterfaceNumber = iface->bInterfaceNumber;
        					index->ifaces[index->ifaces_num].bAlternateSetting = iface->bAlternateSetting;
        					index->ifaces[index->ifaces_num].bInterfaceClass = iface->bInterfaceClass;
        					index->ifaces_num++;
        				}
        				if (desc_type == USB_DT_ENDPOINT && index->ifaces_num > 0) {
        					struct usb_iface_index* iface = &index->ifaces[index->ifaces_num - 1];
        					if (iface->eps_num < USB_MAX_EP_NUM) {
        						memcpy(&iface->eps[iface->eps_num].desc, buffer + offset, sizeof(iface->eps[iface->eps_num].desc));
        						iface->eps_num++;
        					}
        				}
        				offset += desc_length;
        			}
        			return true;
        		}
        		
        		static struct usb_device_index* add_usb_index(int fd, const char* dev, size_t dev_len)
        		{
        			int i = __atomic_fetch_add(&usb_devices_num, 1, __ATOMIC_RELAXED);
        			if (i >= USB_MAX_FDS)
        				return NULL;
        			int rv = 0;
        			NONFAILING(rv = parse_usb_descriptor(dev, dev_len, &usb_devices[i].index));
        			if (!rv)
        				return NULL;
        			__atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE);
        			return &usb_devices[i].index;
        		}
        		
        		static struct usb_device_index* lookup_usb_index(int fd)
        		{
        			int i;
        			for (i = 0; i < USB_MAX_FDS; i++) {
        				if (__atomic_load_n(&usb_devices[i].fd, __ATOMIC_ACQUIRE) == fd) {
        					return &usb_devices[i].index;
        				}
        			}
        			return NULL;
        		}
        		
        		struct vusb_connect_string_descriptor {
        			uint32_t len;
        			char* str;
        		} __attribute__((packed));
        		
        		struct vusb_connect_descriptors {
        			uint32_t qual_len;
        			char* qual;
        			uint32_t bos_len;
        			char* bos;
        			uint32_t strs_len;
        			struct vusb_connect_string_descriptor strs[0];
        		} __attribute__((packed));
        		
        		static const char default_string[] = {
        		    8, USB_DT_STRING,
        		    's', 0, 'y', 0, 'z', 0
        		};
        		
        		static const char default_lang_id[] = {
        		    4, USB_DT_STRING,
        		    0x09, 0x04
        		};
        		
        		static bool lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs,
        						       const struct usb_ctrlrequest* ctrl,
        						       char** response_data, uint32_t* response_length)
        		{
        			struct usb_device_index* index = lookup_usb_index(fd);
        			uint8_t str_idx;
        			if (!index)
        				return false;
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_GET_DESCRIPTOR:
        					switch (ctrl->wValue >> 8) {
        					case USB_DT_DEVICE:
        						*response_data = (char*)index->dev;
        						*response_length = sizeof(*index->dev);
        						return true;
        					case USB_DT_CONFIG:
        						*response_data = (char*)index->config;
        						*response_length = index->config_length;
        						return true;
        					case USB_DT_STRING:
        						str_idx = (uint8_t)ctrl->wValue;
        						if (descs && str_idx < descs->strs_len) {
        							*response_data = descs->strs[str_idx].str;
        							*response_length = descs->strs[str_idx].len;
        							return true;
        						}
        						if (str_idx == 0) {
        							*response_data = (char*)&default_lang_id[0];
        							*response_length = default_lang_id[0];
        							return true;
        						}
        						*response_data = (char*)&default_string[0];
        						*response_length = default_string[0];
        						return true;
        					case USB_DT_BOS:
        						*response_data = descs->bos;
        						*response_length = descs->bos_len;
        						return true;
        					case USB_DT_DEVICE_QUALIFIER:
        						if (!descs->qual) {
        							struct usb_qualifier_descriptor* qual =
        							    (struct usb_qualifier_descriptor*)response_data;
        							qual->bLength = sizeof(*qual);
        							qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
        							qual->bcdUSB = index->dev->bcdUSB;
        							qual->bDeviceClass = index->dev->bDeviceClass;
        							qual->bDeviceSubClass = index->dev->bDeviceSubClass;
        							qual->bDeviceProtocol = index->dev->bDeviceProtocol;
        							qual->bMaxPacketSize0 = index->dev->bMaxPacketSize0;
        							qual->bNumConfigurations = index->dev->bNumConfigurations;
        							qual->bRESERVED = 0;
        							*response_length = sizeof(*qual);
        							return true;
        						}
        						*response_data = descs->qual;
        						*response_length = descs->qual_len;
        						return true;
        					default:
        						break;
        					}
        					break;
        				default:
        					break;
        				}
        				break;
        			default:
        				break;
        			}
        			return false;
        		}
        		
        		typedef bool (*lookup_connect_out_response_t)(int fd, const struct vusb_connect_descriptors* descs,
        							      const struct usb_ctrlrequest* ctrl, bool* done);
        		
        		static bool lookup_connect_response_out_generic(int fd, const struct vusb_connect_descriptors* descs,
        								const struct usb_ctrlrequest* ctrl, bool* done)
        		{
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_SET_CONFIGURATION:
        					*done = true;
        					return true;
        				default:
        					break;
        				}
        				break;
        			}
        			return false;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static int vhci_open(void)
        		{
        			return open("/dev/vhci", O_RDWR);
        		}
        		
        		static int vhci_setport(int fd, u_int port)
        		{
        			struct vhci_ioc_set_port args;
        			args.port = port;
        			return ioctl(fd, VHCI_IOC_SET_PORT, &args);
        		}
        		
        		static int vhci_usb_attach(int fd)
        		{
        			return ioctl(fd, VHCI_IOC_USB_ATTACH, NULL);
        		}
        		
        		static int vhci_usb_recv(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = read(fd, ptr, size);
        				if (done < 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		static int vhci_usb_send(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = write(fd, ptr, size);
        				if (done <= 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static volatile long syz_usb_connect_impl(uint64_t speed, uint64_t dev_len,
        							  const char* dev, const struct vusb_connect_descriptors* descs,
        							  lookup_connect_out_response_t lookup_connect_response_out)
        		{
        			struct usb_device_index* index;
        			int portnum, fd, rv;
        			bool done;
        			portnum = procid + 1;
        			if (!dev) {
        				return -1;
        			}
        			if (portnum != 1) {
        				/* For now, we support only one proc. */
        				return -1;
        			}
        			fd = vhci_open();
        			if (fd < 0) {
        				return -1;
        			}
        			index = add_usb_index(fd, dev, dev_len);
        			if (!index) {
        				goto err;
        			}
        			rv = vhci_setport(fd, portnum);
        			if (rv != 0) {
        				goto err;
        			}
        			rv = vhci_usb_attach(fd);
        			if (rv != 0) {
        				goto err;
        			}
        			done = false;
        			while (!done) {
        				vhci_request_t req;
        				rv = vhci_usb_recv(fd, &req, sizeof(req));
        				if (rv != 0) {
        					goto err;
        				}
        				if (req.type != VHCI_REQ_CTRL) {
        					goto err;
        				}
        				char* response_data = NULL;
        				uint32_t response_length = 0;
        				char data[4096];
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					bool response_found = false;
        					NONFAILING(response_found = lookup_connect_response_in(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &response_data, &response_length));
        					if (!response_found) {
        						goto err;
        					}
        				} else {
        					if (!lookup_connect_response_out(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &done)) {
        						goto err;
        					}
        					response_data = NULL;
        					response_length = UGETW(req.u.ctrl.wLength);
        				}
        				if ((req.u.ctrl.bmRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        				    req.u.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
        					/* TODO: possibly revisit */
        				}
        				if (response_length > sizeof(data))
        					response_length = 0;
        				if ((uint32_t)UGETW(req.u.ctrl.wLength) < response_length)
        					response_length = UGETW(req.u.ctrl.wLength);
        				if (response_data)
        					memcpy(data, response_data, response_length);
        				else
        					memset(data, 0, response_length);
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					if (response_length > 0) {
        						vhci_response_t res;
        						res.size = response_length;
        						rv = vhci_usb_send(fd, &res, sizeof(res));
        						if (rv == 0)
        							rv = vhci_usb_send(fd, data, response_length);
        					}
        				} else {
        					rv = vhci_usb_recv(fd, data, response_length);
        				}
        				if (rv < 0) {
        					goto err;
        				}
        			}
        			sleep_ms(200);
        			return fd;
        		
        		err:
        			close(fd);
        			return -1;
        		}
        		
        		static volatile long syz_usb_connect(volatile long a0, volatile long a1,
        						     volatile long a2, volatile long a3)
        		{
        			uint64_t speed = a0;
        			uint64_t dev_len = a1;
        			const char* dev = (const char*)a2;
        			const struct vusb_connect_descriptors* descs = (const struct vusb_connect_descriptors*)a3;
        			return syz_usb_connect_impl(speed, dev_len, dev, descs,
        						    &lookup_connect_response_out_generic);
        		}
        		
        		static volatile long syz_usb_disconnect(volatile long a0)
        		{
        			int fd = a0;
        			int rv = close(fd);
        			sleep_ms(200);
        			return rv;
        		}
        		
        		static void sandbox_common()
        		{
        			if (setsid() == -1)
        			exit(1);
        			struct rlimit rlim;
        			rlim.rlim_cur = rlim.rlim_max = 8 << 20;
        			setrlimit(RLIMIT_MEMLOCK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_FSIZE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_STACK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 0;
        			setrlimit(RLIMIT_CORE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 256;
        			setrlimit(RLIMIT_NOFILE, &rlim);
        		}
        		
        		static void loop();
        		
        		static int do_sandbox_none(void)
        		{
        			sandbox_common();
        			loop();
        			return 0;
        		}
        		
        		static long syz_execute_func(volatile long text)
        		{
        			volatile long p[8] = {0};
        			(void)p;
        			asm volatile("" ::"r"(0l), "r"(1l), "r"(2l), "r"(3l), "r"(4l), "r"(5l), "r"(6l),
        				     "r"(7l), "r"(8l), "r"(9l), "r"(10l), "r"(11l), "r"(12l), "r"(13l));
        			NONFAILING(((void (*)(void))(text))());
        			return 0;
        		}
        		
        		struct thread_t {
        			int created, call;
        			event_t ready, done;
        		};
        		
        		static struct thread_t threads[16];
        		static void execute_call(int call);
        		static int running;
        		
        		static void* thr(void* arg)
        		{
        			struct thread_t* th = (struct thread_t*)arg;
        			for (;;) {
        				event_wait(&th->ready);
        				event_reset(&th->ready);
        				execute_call(th->call);
        				__atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
        				event_set(&th->done);
        			}
        			return 0;
        		}
        		
        		static void execute_one(void)
        		{
        			int i, call, thread;
        			for (call = 0; call < 15; call++) {
        				for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) {
        					struct thread_t* th = &threads[thread];
        					if (!th->created) {
        						th->created = 1;
        						event_init(&th->ready);
        						event_init(&th->done);
        						event_set(&th->done);
        						thread_start(thr, th);
        					}
        					if (!event_isset(&th->done))
        						continue;
        					event_reset(&th->done);
        					th->call = call;
        					__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        					event_set(&th->ready);
        					event_timedwait(&th->done, 45 + (call == 13 ? 3000 : 0) + (call == 14 ? 300 : 0));
        					break;
        				}
        			}
        			for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
        				sleep_ms(1);
        		}
        		
        		static void execute_one(void);
        		
        		#define WAIT_FLAGS 0
        		
        		static void loop(void)
        		{
        			int iter;
        			for (iter = 0;; iter++) {
        				char cwdbuf[32];
        				sprintf(cwdbuf, "./%d", iter);
        				if (mkdir(cwdbuf, 0777))
        			exit(1);
        				int pid = fork();
        				if (pid < 0)
        			exit(1);
        				if (pid == 0) {
        					if (chdir(cwdbuf))
        			exit(1);
        					execute_one();
        					exit(0);
        				}
        				int status = 0;
        				uint64_t start = current_time_ms();
        				for (;;) {
        					if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        						break;
        					sleep_ms(1);
        					if (current_time_ms() - start < 5 * 1000)
        						continue;
        					kill_and_wait(pid, &status);
        					break;
        				}
        				remove_dir(cwdbuf);
        			}
        		}
        		
        		#ifndef SYS_access
        		#define SYS_access 33
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_lseek
        		#define SYS_lseek 199
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_shmctl
        		#define SYS_shmctl 443
        		#endif
        		#ifndef SYS_shmget
        		#define SYS_shmget 231
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_socketpair
        		#define SYS_socketpair 135
        		#endif
        		
        		uint64_t r[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_socketpair, 1ul, 1ul, 0, 0x20000000ul);
        				if (res != -1) {
        						NONFAILING(r[0] = *(uint32_t*)0x20000000);
        						NONFAILING(r[1] = *(uint32_t*)0x20000004);
        				}
        				break;
        			case 1:
        				NONFAILING(*(uint32_t*)0x20000080 = 8);
        				syscall(SYS_getpeername, r[1], 0x20000040ul, 0x20000080ul);
        				break;
        			case 2:
        				syscall(SYS_lseek, r[0], 5ul, 1ul);
        				break;
        			case 3:
        				NONFAILING(memcpy((void*)0x200000c0, "./file0\000", 8));
        				syscall(SYS_access, 0x200000c0ul, 2ul);
        				break;
        			case 4:
        				res = syscall(SYS_socket, 1ul, 1ul, 0);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 5:
        				NONFAILING(*(uint64_t*)0x200014c0 = 0x20000100);
        				NONFAILING(*(uint32_t*)0x200014c8 = 0xc);
        				NONFAILING(*(uint64_t*)0x200014d0 = 0x20001340);
        				NONFAILING(*(uint64_t*)0x20001340 = 0x20000140);
        				NONFAILING(*(uint64_t*)0x20001348 = 0x4d);
        				NONFAILING(*(uint64_t*)0x20001350 = 0x200001c0);
        				NONFAILING(*(uint64_t*)0x20001358 = 0x8d);
        				NONFAILING(*(uint64_t*)0x20001360 = 0x20000280);
        				NONFAILING(*(uint64_t*)0x20001368 = 0x25);
        				NONFAILING(*(uint64_t*)0x20001370 = 0x200002c0);
        				NONFAILING(*(uint64_t*)0x20001378 = 0x1000);
        				NONFAILING(*(uint64_t*)0x20001380 = 0x200012c0);
        				NONFAILING(*(uint64_t*)0x20001388 = 0x5f);
        				NONFAILING(*(uint64_t*)0x200014d8 = 5);
        				NONFAILING(*(uint64_t*)0x200014e0 = 0x200013c0);
        				NONFAILING(*(uint64_t*)0x200014e8 = 0xd8);
        				NONFAILING(*(uint32_t*)0x200014f0 = 0);
        				syscall(SYS_recvmsg, r[2], 0x200014c0ul, 0x40ul);
        				break;
        			case 6:
        				res = syscall(SYS_shmget, 0x798dd814ul, 0x3000ul, 0x60ul, 0x20ffc000ul);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 7:
        				syscall(SYS_shmctl, r[3], 4ul, 0);
        				break;
        			case 8:
        				res = syscall(SYS_socket, 0x18ul, 5ul, 0x3e);
        				if (res != -1)
        						r[4] = res;
        				break;
        			case 9:
        				syscall(SYS_mmap, 0x20ffd000ul, 0x2000ul, 1ul, 0x210ul, r[4], 0ul, 0x100000000ul);
        				break;
        			case 10:
        				NONFAILING(memcpy((void*)0x20000000, "\x5e\xca\xd8\xbb\x62\x7a\x3a\x76\x50\x4a\xd2\xe0\x3a\x19\x6c\x8c\x75\xbb\xf9\x78\xbb\xa9\x8c\x2d\xf5\xe2\x6a\x5d\x25\xf8\x4e\x08\x3d\xe8\xf2\x7b\x7f\xfe\xda\x58\x1b\x9a\xdc\x9a\xae\xeb\x97\xdb\x43\x38\x22\xdb\xbb\xf3\xa9\x00\x27\x38\x4a\xbb\x2e\x61\x43\x27\xb7\xdd\xd4\xbc\xbb\x87\x04\xd5\x75\x56\x3b\x2e\xcc\x9b\x13\xeb\xcc\x1d\x5f\x0a\xd4\xfd\x25\x0a\x79\xa3\x98\x3b\x54\x05\xaa\xe0\x36\x55\x03\x0e\x16\x0b\x22\xa6\x61\xf0\x1c\xab\xaa\xf0\xfe\x28\xfd\xed\x43\xed\xee\xea\xba\x8e\x29\xe7\xa5\x5e\xd1\x60", 126));
        				break;
        			case 11:
        				NONFAILING(memcpy((void*)0x20000080, "\xc4\x41\xb3\x7d\x67\x16\xc4\xc1\x19\x5d\x3c\xc4\x63\xa6\xf6\xb3\x86\x5f\x64\x64\x40\x0f\x91\xfc\xc4\x02\xb5\x8e\x45\x0c\xd3\x10\xfa\xf2\x0f\x2b\x31\xc4\xc1\xed\xdd\x69\x0b\xc4\xc2\x0d\x0c\xd1", 48));
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        				NONFAILING(memcpy((void*)0x20000100, "\x00\x30\x4f\xf9\x82\x3a\x61\x45\xaf\xcf\xab\xe5\x9e\x7b\x44\x8a\xf5\x19\x13\x09\x95\x66\xd6\xb4\x99\x44\x63\xd5\x2f\xf7\x0c\x87\xd9\x5b\xd6\x58\xf3\x13\xdd\x8f\x6e\xf2\xae\x26\xb1\x30\xa2\x96\xec\x42\x60\x64\xb7\x96\x66\x1a\x0a", 57));
        				NONFAILING(memcpy((void*)0x20000140, "\x8e\xb1\x2c\x0b\x12\xb9\xe8\x10\x70\x0f\x13\xd7\x30\x40\x08\x7e\x8a\x51\xc0\xe0\x50\x46\x23\xd6\x84\x34\x51\xcc\xdf\xfc\xe9", 31));
        				res = syz_usb_connect(0x374, 0x39, 0x20000100, 0x20000140);
        				if (res != -1)
        						r[5] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[5]);
        				break;
        			}
        		
        		}
        		int main(void)
        		{
        				syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul);
        			install_segv_handler();
        					use_temporary_dir();
        					do_sandbox_none();
        			return 0;
        		}
        		
        		<stdin>: In function 'syz_usb_connect_impl':
        		<stdin>:664:77: error: unknown type name 'usb_ctrlrequest'
        		<stdin>:57:110: note: in definition of macro 'NONFAILING'
        		<stdin>:669:55: error: unknown type name 'usb_ctrlrequest'
        		
        		compiler invocation: /syzkaller/netbsd/src/../tools/bin/x86_64--netbsd-g++ [-o /tmp/syz-executor023471079 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/12 (0.20s)
        	csource_test.go:123: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Sandbox:none Fault:false FaultCall:0 FaultNth:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false UseTmpDir:true HandleSegv:false Repro:true Trace:false}
        		program:
        		socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
        		getpeername$unix(r1, &(0x7f0000000040)=@abs, &(0x7f0000000080)=0x8)
        		lseek(r0, 0x5, 0x1)
        		access(&(0x7f00000000c0)='./file0\x00', 0x2)
        		r2 = socket$unix(0x1, 0x1, 0x0)
        		recvmsg(r2, &(0x7f00000014c0)={&(0x7f0000000100)=@in6, 0xc, &(0x7f0000001340)=[{&(0x7f0000000140)=""/77, 0x4d}, {&(0x7f00000001c0)=""/141, 0x8d}, {&(0x7f0000000280)=""/37, 0x25}, {&(0x7f00000002c0)=""/4096, 0x1000}, {&(0x7f00000012c0)=""/95, 0x5f}], 0x5, &(0x7f00000013c0)=""/216, 0xd8}, 0x40)
        		r3 = shmget(0x1, 0x3000, 0x60, &(0x7f0000ffc000/0x3000)=nil)
        		shmctl$SHM_UNLOCK(r3, 0x4)
        		r4 = socket$inet6(0x18, 0x5, 0x3e)
        		mmap(&(0x7f0000ffd000/0x2000)=nil, 0x2000, 0x1, 0x210, r4, 0x0, 0x100000000)
        		syz_emit_ethernet(0x7e, &(0x7f0000000000)="5ecad8bb627a3a76504ad2e03a196c8c75bbf978bba98c2df5e26a5d25f84e083de8f27b7ffeda581b9adc9aaeeb97db433822dbbbf3a90027384abb2e614327b7ddd4bcbb8704d575563b2ecc9b13ebcc1d5f0ad4fd250a79a3983b5405aae03655030e160b22a661f01cabaaf0fe28fded43edeeeaba8e29e7a55ed160")
        		syz_execute_func(&(0x7f0000000080)="c441b37d6716c4c1195d3cc463a6f6b3865f6464400f91fcc402b58e450cd310faf20f2b31c4c1eddd690bc4c20d0cd1")
        		syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x2)
        		r5 = syz_usb_connect(0x374, 0x39, &(0x7f0000000100)="00304ff9823a6145afcfabe59e7b448af51913099566d6b4994463d52ff70c87d95bd658f313dd8f6ef2ae26b130a296ec426064b796661a0a", &(0x7f0000000140)="8eb12c0b12b9e810700f13d73040087e8a51c0e0504623d6843451ccdffce9")
        		syz_usb_disconnect(r5)
        		
        	csource_test.go:124: failed to build program:
        		// autogenerated by syzkaller (https://github.com/google/syzkaller)
        		
        		#define _GNU_SOURCE 
        		
        		#include <dev/usb/usb.h>
        		#include <dev/usb/usbhid.h>
        		#include <dev/usb/vhci.h>
        		#include <dirent.h>
        		#include <endian.h>
        		#include <errno.h>
        		#include <fcntl.h>
        		#include <pthread.h>
        		#include <pwd.h>
        		#include <signal.h>
        		#include <stdarg.h>
        		#include <stdbool.h>
        		#include <stdint.h>
        		#include <stdio.h>
        		#include <stdlib.h>
        		#include <string.h>
        		#include <sys/ioctl.h>
        		#include <sys/resource.h>
        		#include <sys/stat.h>
        		#include <sys/syscall.h>
        		#include <sys/types.h>
        		#include <sys/wait.h>
        		#include <time.h>
        		#include <unistd.h>
        		
        		static unsigned long long procid;
        		
        		static void kill_and_wait(int pid, int* status)
        		{
        			kill(pid, SIGKILL);
        			while (waitpid(-1, status, 0) != pid) {
        			}
        		}
        		
        		static void sleep_ms(uint64_t ms)
        		{
        			usleep(ms * 1000);
        		}
        		
        		static uint64_t current_time_ms(void)
        		{
        			struct timespec ts;
        			if (clock_gettime(CLOCK_MONOTONIC, &ts))
        			exit(1);
        			return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
        		}
        		
        		static void use_temporary_dir(void)
        		{
        			char tmpdir_template[] = "./syzkaller.XXXXXX";
        			char* tmpdir = mkdtemp(tmpdir_template);
        			if (!tmpdir)
        			exit(1);
        			if (chmod(tmpdir, 0777))
        			exit(1);
        			if (chdir(tmpdir))
        			exit(1);
        		}
        		
        		static void remove_dir(const char* dir)
        		{
        			DIR* dp;
        			struct dirent* ep;
        			dp = opendir(dir);
        			if (dp == NULL)
        			exit(1);
        			while ((ep = readdir(dp))) {
        				if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
        					continue;
        				char filename[FILENAME_MAX];
        				snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
        				struct stat st;
        				if (lstat(filename, &st))
        			exit(1);
        				if (S_ISDIR(st.st_mode)) {
        					remove_dir(filename);
        					continue;
        				}
        				if (unlink(filename))
        			exit(1);
        			}
        			closedir(dp);
        			if (rmdir(dir))
        			exit(1);
        		}
        		
        		static void thread_start(void* (*fn)(void*), void* arg)
        		{
        			pthread_t th;
        			pthread_attr_t attr;
        			pthread_attr_init(&attr);
        			pthread_attr_setstacksize(&attr, 128 << 10);
        			int i;
        			for (i = 0; i < 100; i++) {
        				if (pthread_create(&th, &attr, fn, arg) == 0) {
        					pthread_attr_destroy(&attr);
        					return;
        				}
        				if (errno == EAGAIN) {
        					usleep(50);
        					continue;
        				}
        				break;
        			}
        			exit(1);
        		}
        		
        		typedef struct {
        			pthread_mutex_t mu;
        			pthread_cond_t cv;
        			int state;
        		} event_t;
        		
        		static void event_init(event_t* ev)
        		{
        			if (pthread_mutex_init(&ev->mu, 0))
        			exit(1);
        			if (pthread_cond_init(&ev->cv, 0))
        			exit(1);
        			ev->state = 0;
        		}
        		
        		static void event_reset(event_t* ev)
        		{
        			ev->state = 0;
        		}
        		
        		static void event_set(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			if (ev->state)
        			exit(1);
        			ev->state = 1;
        			pthread_mutex_unlock(&ev->mu);
        			pthread_cond_broadcast(&ev->cv);
        		}
        		
        		static void event_wait(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			while (!ev->state)
        				pthread_cond_wait(&ev->cv, &ev->mu);
        			pthread_mutex_unlock(&ev->mu);
        		}
        		
        		static int event_isset(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		static int event_timedwait(event_t* ev, uint64_t timeout)
        		{
        			uint64_t start = current_time_ms();
        			uint64_t now = start;
        			pthread_mutex_lock(&ev->mu);
        			for (;;) {
        				if (ev->state)
        					break;
        				uint64_t remain = timeout - (now - start);
        				struct timespec ts;
        				ts.tv_sec = remain / 1000;
        				ts.tv_nsec = (remain % 1000) * 1000 * 1000;
        				pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
        				now = current_time_ms();
        				if (now - start > timeout)
        					break;
        			}
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		/*
        		 * Redefinitions to match the linux types used in common_usb.h.
        		 */
        		
        		struct usb_endpoint_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bEndpointAddress;
        			uint8_t bmAttributes;
        			uint16_t wMaxPacketSize;
        			uint8_t bInterval;
        			uint8_t bRefresh;
        			uint8_t bSynchAddress;
        		} __attribute__((packed));
        		
        		struct usb_device_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint16_t idVendor;
        			uint16_t idProduct;
        			uint16_t bcdDevice;
        			uint8_t iManufacturer;
        			uint8_t iProduct;
        			uint8_t iSerialNumber;
        			uint8_t bNumConfigurations;
        		} __attribute__((packed));
        		
        		struct usb_config_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t wTotalLength;
        			uint8_t bNumInterfaces;
        			uint8_t bConfigurationValue;
        			uint8_t iConfiguration;
        			uint8_t bmAttributes;
        			uint8_t bMaxPower;
        		} __attribute__((packed));
        		
        		struct usb_interface_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bNumEndpoints;
        			uint8_t bInterfaceClass;
        			uint8_t bInterfaceSubClass;
        			uint8_t bInterfaceProtocol;
        			uint8_t iInterface;
        		} __attribute__((packed));
        		
        		struct usb_ctrlrequest {
        			uint8_t bRequestType;
        			uint8_t bRequest;
        			uint16_t wValue;
        			uint16_t wIndex;
        			uint16_t wLength;
        		} __attribute__((packed));
        		
        		struct usb_qualifier_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint8_t bNumConfigurations;
        			uint8_t bRESERVED;
        		} __attribute__((packed));
        		
        		#define USB_TYPE_MASK (0x03 << 5)
        		#define USB_TYPE_STANDARD (0x00 << 5)
        		#define USB_TYPE_CLASS (0x01 << 5)
        		#define USB_TYPE_VENDOR (0x02 << 5)
        		#define USB_TYPE_RESERVED (0x03 << 5)
        		
        		#define USB_DT_DEVICE 0x01
        		#define USB_DT_CONFIG 0x02
        		#define USB_DT_STRING 0x03
        		#define USB_DT_INTERFACE 0x04
        		#define USB_DT_ENDPOINT 0x05
        		#define USB_DT_DEVICE_QUALIFIER 0x06
        		#define USB_DT_OTHER_SPEED_CONFIG 0x07
        		#define USB_DT_INTERFACE_POWER 0x08
        		#define USB_DT_OTG 0x09
        		#define USB_DT_DEBUG 0x0a
        		#define USB_DT_INTERFACE_ASSOCIATION 0x0b
        		#define USB_DT_SECURITY 0x0c
        		#define USB_DT_KEY 0x0d
        		#define USB_DT_ENCRYPTION_TYPE 0x0e
        		#define USB_DT_BOS 0x0f
        		#define USB_DT_DEVICE_CAPABILITY 0x10
        		#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
        		#define USB_DT_WIRE_ADAPTER 0x21
        		#define USB_DT_RPIPE 0x22
        		#define USB_DT_CS_RADIO_CONTROL 0x23
        		#define USB_DT_PIPE_USAGE 0x24
        		#define USB_DT_SS_ENDPOINT_COMP 0x30
        		#define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31
        		
        		#define USB_REQ_GET_STATUS 0x00
        		#define USB_REQ_CLEAR_FEATURE 0x01
        		#define USB_REQ_SET_FEATURE 0x03
        		#define USB_REQ_SET_ADDRESS 0x05
        		#define USB_REQ_GET_DESCRIPTOR 0x06
        		#define USB_REQ_SET_DESCRIPTOR 0x07
        		#define USB_REQ_GET_CONFIGURATION 0x08
        		#define USB_REQ_SET_CONFIGURATION 0x09
        		#define USB_REQ_GET_INTERFACE 0x0A
        		#define USB_REQ_SET_INTERFACE 0x0B
        		#define USB_REQ_SYNCH_FRAME 0x0C
        		#define USB_REQ_SET_SEL 0x30
        		#define USB_REQ_SET_ISOCH_DELAY 0x31
        		
        		#define USB_REQ_SET_ENCRYPTION 0x0D
        		#define USB_REQ_GET_ENCRYPTION 0x0E
        		#define USB_REQ_RPIPE_ABORT 0x0E
        		#define USB_REQ_SET_HANDSHAKE 0x0F
        		#define USB_REQ_RPIPE_RESET 0x0F
        		#define USB_REQ_GET_HANDSHAKE 0x10
        		#define USB_REQ_SET_CONNECTION 0x11
        		#define USB_REQ_SET_SECURITY_DATA 0x12
        		#define USB_REQ_GET_SECURITY_DATA 0x13
        		#define USB_REQ_SET_WUSB_DATA 0x14
        		#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
        		#define USB_REQ_LOOPBACK_DATA_READ 0x16
        		#define USB_REQ_SET_INTERFACE_DS 0x17
        		
        		#define USB_REQ_GET_PARTNER_PDO 20
        		#define USB_REQ_GET_BATTERY_STATUS 21
        		#define USB_REQ_SET_PDO 22
        		#define USB_REQ_GET_VDM 23
        		#define USB_REQ_SEND_VDM 24
        		
        		#define USB_MAX_IFACE_NUM 4
        		#define USB_MAX_EP_NUM 32
        		#define USB_MAX_FDS 6
        		
        		struct usb_endpoint_index {
        			struct usb_endpoint_descriptor desc;
        			int handle;
        		};
        		
        		struct usb_iface_index {
        			struct usb_interface_descriptor* iface;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bInterfaceClass;
        			struct usb_endpoint_index eps[USB_MAX_EP_NUM];
        			int eps_num;
        		};
        		
        		struct usb_device_index {
        			struct usb_device_descriptor* dev;
        			struct usb_config_descriptor* config;
        			uint8_t bDeviceClass;
        			uint8_t bMaxPower;
        			int config_length;
        			struct usb_iface_index ifaces[USB_MAX_IFACE_NUM];
        			int ifaces_num;
        			int iface_cur;
        		};
        		
        		struct usb_info {
        			int fd;
        			struct usb_device_index index;
        		};
        		
        		static struct usb_info usb_devices[USB_MAX_FDS];
        		static int usb_devices_num;
        		
        		static bool parse_usb_descriptor(const char* buffer, size_t length, struct usb_device_index* index)
        		{
        			if (length < sizeof(*index->dev) + sizeof(*index->config))
        				return false;
        			memset(index, 0, sizeof(*index));
        			index->dev = (struct usb_device_descriptor*)buffer;
        			index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev));
        			index->bDeviceClass = index->dev->bDeviceClass;
        			index->bMaxPower = index->config->bMaxPower;
        			index->config_length = length - sizeof(*index->dev);
        			index->iface_cur = -1;
        			size_t offset = 0;
        			while (true) {
        				if (offset + 1 >= length)
        					break;
        				uint8_t desc_length = buffer[offset];
        				uint8_t desc_type = buffer[offset + 1];
        				if (desc_length <= 2)
        					break;
        				if (offset + desc_length > length)
        					break;
        				if (desc_type == USB_DT_INTERFACE && index->ifaces_num < USB_MAX_IFACE_NUM) {
        					struct usb_interface_descriptor* iface = (struct usb_interface_descriptor*)(buffer + offset);
        					index->ifaces[index->ifaces_num].iface = iface;
        					index->ifaces[index->ifaces_num].bInterfaceNumber = iface->bInterfaceNumber;
        					index->ifaces[index->ifaces_num].bAlternateSetting = iface->bAlternateSetting;
        					index->ifaces[index->ifaces_num].bInterfaceClass = iface->bInterfaceClass;
        					index->ifaces_num++;
        				}
        				if (desc_type == USB_DT_ENDPOINT && index->ifaces_num > 0) {
        					struct usb_iface_index* iface = &index->ifaces[index->ifaces_num - 1];
        					if (iface->eps_num < USB_MAX_EP_NUM) {
        						memcpy(&iface->eps[iface->eps_num].desc, buffer + offset, sizeof(iface->eps[iface->eps_num].desc));
        						iface->eps_num++;
        					}
        				}
        				offset += desc_length;
        			}
        			return true;
        		}
        		
        		static struct usb_device_index* add_usb_index(int fd, const char* dev, size_t dev_len)
        		{
        			int i = __atomic_fetch_add(&usb_devices_num, 1, __ATOMIC_RELAXED);
        			if (i >= USB_MAX_FDS)
        				return NULL;
        			int rv = 0;
        		rv = parse_usb_descriptor(dev, dev_len, &usb_devices[i].index);
        			if (!rv)
        				return NULL;
        			__atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE);
        			return &usb_devices[i].index;
        		}
        		
        		static struct usb_device_index* lookup_usb_index(int fd)
        		{
        			int i;
        			for (i = 0; i < USB_MAX_FDS; i++) {
        				if (__atomic_load_n(&usb_devices[i].fd, __ATOMIC_ACQUIRE) == fd) {
        					return &usb_devices[i].index;
        				}
        			}
        			return NULL;
        		}
        		
        		struct vusb_connect_string_descriptor {
        			uint32_t len;
        			char* str;
        		} __attribute__((packed));
        		
        		struct vusb_connect_descriptors {
        			uint32_t qual_len;
        			char* qual;
        			uint32_t bos_len;
        			char* bos;
        			uint32_t strs_len;
        			struct vusb_connect_string_descriptor strs[0];
        		} __attribute__((packed));
        		
        		static const char default_string[] = {
        		    8, USB_DT_STRING,
        		    's', 0, 'y', 0, 'z', 0
        		};
        		
        		static const char default_lang_id[] = {
        		    4, USB_DT_STRING,
        		    0x09, 0x04
        		};
        		
        		static bool lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs,
        						       const struct usb_ctrlrequest* ctrl,
        						       char** response_data, uint32_t* response_length)
        		{
        			struct usb_device_index* index = lookup_usb_index(fd);
        			uint8_t str_idx;
        			if (!index)
        				return false;
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_GET_DESCRIPTOR:
        					switch (ctrl->wValue >> 8) {
        					case USB_DT_DEVICE:
        						*response_data = (char*)index->dev;
        						*response_length = sizeof(*index->dev);
        						return true;
        					case USB_DT_CONFIG:
        						*response_data = (char*)index->config;
        						*response_length = index->config_length;
        						return true;
        					case USB_DT_STRING:
        						str_idx = (uint8_t)ctrl->wValue;
        						if (descs && str_idx < descs->strs_len) {
        							*response_data = descs->strs[str_idx].str;
        							*response_length = descs->strs[str_idx].len;
        							return true;
        						}
        						if (str_idx == 0) {
        							*response_data = (char*)&default_lang_id[0];
        							*response_length = default_lang_id[0];
        							return true;
        						}
        						*response_data = (char*)&default_string[0];
        						*response_length = default_string[0];
        						return true;
        					case USB_DT_BOS:
        						*response_data = descs->bos;
        						*response_length = descs->bos_len;
        						return true;
        					case USB_DT_DEVICE_QUALIFIER:
        						if (!descs->qual) {
        							struct usb_qualifier_descriptor* qual =
        							    (struct usb_qualifier_descriptor*)response_data;
        							qual->bLength = sizeof(*qual);
        							qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
        							qual->bcdUSB = index->dev->bcdUSB;
        							qual->bDeviceClass = index->dev->bDeviceClass;
        							qual->bDeviceSubClass = index->dev->bDeviceSubClass;
        							qual->bDeviceProtocol = index->dev->bDeviceProtocol;
        							qual->bMaxPacketSize0 = index->dev->bMaxPacketSize0;
        							qual->bNumConfigurations = index->dev->bNumConfigurations;
        							qual->bRESERVED = 0;
        							*response_length = sizeof(*qual);
        							return true;
        						}
        						*response_data = descs->qual;
        						*response_length = descs->qual_len;
        						return true;
        					default:
        						break;
        					}
        					break;
        				default:
        					break;
        				}
        				break;
        			default:
        				break;
        			}
        			return false;
        		}
        		
        		typedef bool (*lookup_connect_out_response_t)(int fd, const struct vusb_connect_descriptors* descs,
        							      const struct usb_ctrlrequest* ctrl, bool* done);
        		
        		static bool lookup_connect_response_out_generic(int fd, const struct vusb_connect_descriptors* descs,
        								const struct usb_ctrlrequest* ctrl, bool* done)
        		{
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_SET_CONFIGURATION:
        					*done = true;
        					return true;
        				default:
        					break;
        				}
        				break;
        			}
        			return false;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static int vhci_open(void)
        		{
        			return open("/dev/vhci", O_RDWR);
        		}
        		
        		static int vhci_setport(int fd, u_int port)
        		{
        			struct vhci_ioc_set_port args;
        			args.port = port;
        			return ioctl(fd, VHCI_IOC_SET_PORT, &args);
        		}
        		
        		static int vhci_usb_attach(int fd)
        		{
        			return ioctl(fd, VHCI_IOC_USB_ATTACH, NULL);
        		}
        		
        		static int vhci_usb_recv(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = read(fd, ptr, size);
        				if (done < 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		static int vhci_usb_send(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = write(fd, ptr, size);
        				if (done <= 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static volatile long syz_usb_connect_impl(uint64_t speed, uint64_t dev_len,
        							  const char* dev, const struct vusb_connect_descriptors* descs,
        							  lookup_connect_out_response_t lookup_connect_response_out)
        		{
        			struct usb_device_index* index;
        			int portnum, fd, rv;
        			bool done;
        			portnum = procid + 1;
        			if (!dev) {
        				return -1;
        			}
        			if (portnum != 1) {
        				/* For now, we support only one proc. */
        				return -1;
        			}
        			fd = vhci_open();
        			if (fd < 0) {
        				return -1;
        			}
        			index = add_usb_index(fd, dev, dev_len);
        			if (!index) {
        				goto err;
        			}
        			rv = vhci_setport(fd, portnum);
        			if (rv != 0) {
        				goto err;
        			}
        			rv = vhci_usb_attach(fd);
        			if (rv != 0) {
        				goto err;
        			}
        			done = false;
        			while (!done) {
        				vhci_request_t req;
        				rv = vhci_usb_recv(fd, &req, sizeof(req));
        				if (rv != 0) {
        					goto err;
        				}
        				if (req.type != VHCI_REQ_CTRL) {
        					goto err;
        				}
        				char* response_data = NULL;
        				uint32_t response_length = 0;
        				char data[4096];
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					bool response_found = false;
        		response_found = lookup_connect_response_in(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &response_data, &response_length);
        					if (!response_found) {
        						goto err;
        					}
        				} else {
        					if (!lookup_connect_response_out(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &done)) {
        						goto err;
        					}
        					response_data = NULL;
        					response_length = UGETW(req.u.ctrl.wLength);
        				}
        				if ((req.u.ctrl.bmRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        				    req.u.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
        					/* TODO: possibly revisit */
        				}
        				if (response_length > sizeof(data))
        					response_length = 0;
        				if ((uint32_t)UGETW(req.u.ctrl.wLength) < response_length)
        					response_length = UGETW(req.u.ctrl.wLength);
        				if (response_data)
        					memcpy(data, response_data, response_length);
        				else
        					memset(data, 0, response_length);
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					if (response_length > 0) {
        						vhci_response_t res;
        						res.size = response_length;
        						rv = vhci_usb_send(fd, &res, sizeof(res));
        						if (rv == 0)
        							rv = vhci_usb_send(fd, data, response_length);
        					}
        				} else {
        					rv = vhci_usb_recv(fd, data, response_length);
        				}
        				if (rv < 0) {
        					goto err;
        				}
        			}
        			sleep_ms(200);
        			return fd;
        		
        		err:
        			close(fd);
        			return -1;
        		}
        		
        		static volatile long syz_usb_connect(volatile long a0, volatile long a1,
        						     volatile long a2, volatile long a3)
        		{
        			uint64_t speed = a0;
        			uint64_t dev_len = a1;
        			const char* dev = (const char*)a2;
        			const struct vusb_connect_descriptors* descs = (const struct vusb_connect_descriptors*)a3;
        			return syz_usb_connect_impl(speed, dev_len, dev, descs,
        						    &lookup_connect_response_out_generic);
        		}
        		
        		static volatile long syz_usb_disconnect(volatile long a0)
        		{
        			int fd = a0;
        			int rv = close(fd);
        			sleep_ms(200);
        			return rv;
        		}
        		
        		static void sandbox_common()
        		{
        			if (setsid() == -1)
        			exit(1);
        			struct rlimit rlim;
        			rlim.rlim_cur = rlim.rlim_max = 8 << 20;
        			setrlimit(RLIMIT_MEMLOCK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_FSIZE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_STACK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 0;
        			setrlimit(RLIMIT_CORE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 256;
        			setrlimit(RLIMIT_NOFILE, &rlim);
        		}
        		
        		static void loop();
        		
        		static int do_sandbox_none(void)
        		{
        			sandbox_common();
        			loop();
        			return 0;
        		}
        		
        		static long syz_execute_func(volatile long text)
        		{
        			volatile long p[8] = {0};
        			(void)p;
        			asm volatile("" ::"r"(0l), "r"(1l), "r"(2l), "r"(3l), "r"(4l), "r"(5l), "r"(6l),
        				     "r"(7l), "r"(8l), "r"(9l), "r"(10l), "r"(11l), "r"(12l), "r"(13l));
        		((void (*)(void))(text))();
        			return 0;
        		}
        		
        		struct thread_t {
        			int created, call;
        			event_t ready, done;
        		};
        		
        		static struct thread_t threads[16];
        		static void execute_call(int call);
        		static int running;
        		
        		static void* thr(void* arg)
        		{
        			struct thread_t* th = (struct thread_t*)arg;
        			for (;;) {
        				event_wait(&th->ready);
        				event_reset(&th->ready);
        				execute_call(th->call);
        				__atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
        				event_set(&th->done);
        			}
        			return 0;
        		}
        		
        		static void execute_one(void)
        		{
        			if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
        			}
        			int i, call, thread;
        			for (call = 0; call < 15; call++) {
        				for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) {
        					struct thread_t* th = &threads[thread];
        					if (!th->created) {
        						th->created = 1;
        						event_init(&th->ready);
        						event_init(&th->done);
        						event_set(&th->done);
        						thread_start(thr, th);
        					}
        					if (!event_isset(&th->done))
        						continue;
        					event_reset(&th->done);
        					th->call = call;
        					__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        					event_set(&th->ready);
        					event_timedwait(&th->done, 45 + (call == 13 ? 3000 : 0) + (call == 14 ? 300 : 0));
        					break;
        				}
        			}
        			for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
        				sleep_ms(1);
        		}
        		
        		static void execute_one(void);
        		
        		#define WAIT_FLAGS 0
        		
        		static void loop(void)
        		{
        			int iter;
        			for (iter = 0;; iter++) {
        				char cwdbuf[32];
        				sprintf(cwdbuf, "./%d", iter);
        				if (mkdir(cwdbuf, 0777))
        			exit(1);
        				int pid = fork();
        				if (pid < 0)
        			exit(1);
        				if (pid == 0) {
        					if (chdir(cwdbuf))
        			exit(1);
        					execute_one();
        					exit(0);
        				}
        				int status = 0;
        				uint64_t start = current_time_ms();
        				for (;;) {
        					if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        						break;
        					sleep_ms(1);
        					if (current_time_ms() - start < 5 * 1000)
        						continue;
        					kill_and_wait(pid, &status);
        					break;
        				}
        				remove_dir(cwdbuf);
        			}
        		}
        		
        		#ifndef SYS_access
        		#define SYS_access 33
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_lseek
        		#define SYS_lseek 199
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_shmctl
        		#define SYS_shmctl 443
        		#endif
        		#ifndef SYS_shmget
        		#define SYS_shmget 231
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_socketpair
        		#define SYS_socketpair 135
        		#endif
        		
        		uint64_t r[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_socketpair, 1ul, 1ul, 0, 0x20000000ul);
        				if (res != -1) {
        		r[0] = *(uint32_t*)0x20000000;
        		r[1] = *(uint32_t*)0x20000004;
        				}
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = 8;
        				syscall(SYS_getpeername, r[1], 0x20000040ul, 0x20000080ul);
        				break;
        			case 2:
        				syscall(SYS_lseek, r[0], 5ul, 1ul);
        				break;
        			case 3:
        		memcpy((void*)0x200000c0, "./file0\000", 8);
        				syscall(SYS_access, 0x200000c0ul, 2ul);
        				break;
        			case 4:
        				res = syscall(SYS_socket, 1ul, 1ul, 0);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 5:
        		*(uint64_t*)0x200014c0 = 0x20000100;
        		*(uint32_t*)0x200014c8 = 0xc;
        		*(uint64_t*)0x200014d0 = 0x20001340;
        		*(uint64_t*)0x20001340 = 0x20000140;
        		*(uint64_t*)0x20001348 = 0x4d;
        		*(uint64_t*)0x20001350 = 0x200001c0;
        		*(uint64_t*)0x20001358 = 0x8d;
        		*(uint64_t*)0x20001360 = 0x20000280;
        		*(uint64_t*)0x20001368 = 0x25;
        		*(uint64_t*)0x20001370 = 0x200002c0;
        		*(uint64_t*)0x20001378 = 0x1000;
        		*(uint64_t*)0x20001380 = 0x200012c0;
        		*(uint64_t*)0x20001388 = 0x5f;
        		*(uint64_t*)0x200014d8 = 5;
        		*(uint64_t*)0x200014e0 = 0x200013c0;
        		*(uint64_t*)0x200014e8 = 0xd8;
        		*(uint32_t*)0x200014f0 = 0;
        				syscall(SYS_recvmsg, r[2], 0x200014c0ul, 0x40ul);
        				break;
        			case 6:
        				res = syscall(SYS_shmget, 0x798dd814ul, 0x3000ul, 0x60ul, 0x20ffc000ul);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 7:
        				syscall(SYS_shmctl, r[3], 4ul, 0);
        				break;
        			case 8:
        				res = syscall(SYS_socket, 0x18ul, 5ul, 0x3e);
        				if (res != -1)
        						r[4] = res;
        				break;
        			case 9:
        				syscall(SYS_mmap, 0x20ffd000ul, 0x2000ul, 1ul, 0x210ul, r[4], 0ul, 0x100000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\x5e\xca\xd8\xbb\x62\x7a\x3a\x76\x50\x4a\xd2\xe0\x3a\x19\x6c\x8c\x75\xbb\xf9\x78\xbb\xa9\x8c\x2d\xf5\xe2\x6a\x5d\x25\xf8\x4e\x08\x3d\xe8\xf2\x7b\x7f\xfe\xda\x58\x1b\x9a\xdc\x9a\xae\xeb\x97\xdb\x43\x38\x22\xdb\xbb\xf3\xa9\x00\x27\x38\x4a\xbb\x2e\x61\x43\x27\xb7\xdd\xd4\xbc\xbb\x87\x04\xd5\x75\x56\x3b\x2e\xcc\x9b\x13\xeb\xcc\x1d\x5f\x0a\xd4\xfd\x25\x0a\x79\xa3\x98\x3b\x54\x05\xaa\xe0\x36\x55\x03\x0e\x16\x0b\x22\xa6\x61\xf0\x1c\xab\xaa\xf0\xfe\x28\xfd\xed\x43\xed\xee\xea\xba\x8e\x29\xe7\xa5\x5e\xd1\x60", 126);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\x41\xb3\x7d\x67\x16\xc4\xc1\x19\x5d\x3c\xc4\x63\xa6\xf6\xb3\x86\x5f\x64\x64\x40\x0f\x91\xfc\xc4\x02\xb5\x8e\x45\x0c\xd3\x10\xfa\xf2\x0f\x2b\x31\xc4\xc1\xed\xdd\x69\x0b\xc4\xc2\x0d\x0c\xd1", 48);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000100, "\x00\x30\x4f\xf9\x82\x3a\x61\x45\xaf\xcf\xab\xe5\x9e\x7b\x44\x8a\xf5\x19\x13\x09\x95\x66\xd6\xb4\x99\x44\x63\xd5\x2f\xf7\x0c\x87\xd9\x5b\xd6\x58\xf3\x13\xdd\x8f\x6e\xf2\xae\x26\xb1\x30\xa2\x96\xec\x42\x60\x64\xb7\x96\x66\x1a\x0a", 57);
        		memcpy((void*)0x20000140, "\x8e\xb1\x2c\x0b\x12\xb9\xe8\x10\x70\x0f\x13\xd7\x30\x40\x08\x7e\x8a\x51\xc0\xe0\x50\x46\x23\xd6\x84\x34\x51\xcc\xdf\xfc\xe9", 31);
        				res = syz_usb_connect(0x374, 0x39, 0x20000100, 0x20000140);
        				if (res != -1)
        						r[5] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[5]);
        				break;
        			}
        		
        		}
        		int main(void)
        		{
        				syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul);
        					use_temporary_dir();
        					do_sandbox_none();
        			return 0;
        		}
        		
        		<stdin>: In function 'syz_usb_connect_impl':
        		<stdin>:637:63: error: unknown type name 'usb_ctrlrequest'
        		<stdin>:642:55: error: unknown type name 'usb_ctrlrequest'
        		
        		compiler invocation: /syzkaller/netbsd/src/../tools/bin/x86_64--netbsd-g++ [-o /tmp/syz-executor563186202 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/10 (0.22s)
        	csource_test.go:123: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Sandbox:none Fault:false FaultCall:0 FaultNth:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false UseTmpDir:false HandleSegv:false Repro:false Trace:false}
        		program:
        		socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
        		getpeername$unix(r1, &(0x7f0000000040)=@abs, &(0x7f0000000080)=0x8)
        		lseek(r0, 0x5, 0x1)
        		access(&(0x7f00000000c0)='./file0\x00', 0x2)
        		r2 = socket$unix(0x1, 0x1, 0x0)
        		recvmsg(r2, &(0x7f00000014c0)={&(0x7f0000000100)=@in6, 0xc, &(0x7f0000001340)=[{&(0x7f0000000140)=""/77, 0x4d}, {&(0x7f00000001c0)=""/141, 0x8d}, {&(0x7f0000000280)=""/37, 0x25}, {&(0x7f00000002c0)=""/4096, 0x1000}, {&(0x7f00000012c0)=""/95, 0x5f}], 0x5, &(0x7f00000013c0)=""/216, 0xd8}, 0x40)
        		r3 = shmget(0x1, 0x3000, 0x60, &(0x7f0000ffc000/0x3000)=nil)
        		shmctl$SHM_UNLOCK(r3, 0x4)
        		r4 = socket$inet6(0x18, 0x5, 0x3e)
        		mmap(&(0x7f0000ffd000/0x2000)=nil, 0x2000, 0x1, 0x210, r4, 0x0, 0x100000000)
        		syz_emit_ethernet(0x7e, &(0x7f0000000000)="5ecad8bb627a3a76504ad2e03a196c8c75bbf978bba98c2df5e26a5d25f84e083de8f27b7ffeda581b9adc9aaeeb97db433822dbbbf3a90027384abb2e614327b7ddd4bcbb8704d575563b2ecc9b13ebcc1d5f0ad4fd250a79a3983b5405aae03655030e160b22a661f01cabaaf0fe28fded43edeeeaba8e29e7a55ed160")
        		syz_execute_func(&(0x7f0000000080)="c441b37d6716c4c1195d3cc463a6f6b3865f6464400f91fcc402b58e450cd310faf20f2b31c4c1eddd690bc4c20d0cd1")
        		syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x2)
        		r5 = syz_usb_connect(0x374, 0x39, &(0x7f0000000100)="00304ff9823a6145afcfabe59e7b448af51913099566d6b4994463d52ff70c87d95bd658f313dd8f6ef2ae26b130a296ec426064b796661a0a", &(0x7f0000000140)="8eb12c0b12b9e810700f13d73040087e8a51c0e0504623d6843451ccdffce9")
        		syz_usb_disconnect(r5)
        		
        	csource_test.go:124: failed to build program:
        		// autogenerated by syzkaller (https://github.com/google/syzkaller)
        		
        		#define _GNU_SOURCE 
        		
        		#include <dev/usb/usb.h>
        		#include <dev/usb/usbhid.h>
        		#include <dev/usb/vhci.h>
        		#include <endian.h>
        		#include <errno.h>
        		#include <fcntl.h>
        		#include <pthread.h>
        		#include <pwd.h>
        		#include <signal.h>
        		#include <stdarg.h>
        		#include <stdbool.h>
        		#include <stdint.h>
        		#include <stdio.h>
        		#include <stdlib.h>
        		#include <string.h>
        		#include <sys/ioctl.h>
        		#include <sys/resource.h>
        		#include <sys/syscall.h>
        		#include <sys/types.h>
        		#include <sys/wait.h>
        		#include <time.h>
        		#include <unistd.h>
        		
        		static unsigned long long procid;
        		
        		static void kill_and_wait(int pid, int* status)
        		{
        			kill(pid, SIGKILL);
        			while (waitpid(-1, status, 0) != pid) {
        			}
        		}
        		
        		static void sleep_ms(uint64_t ms)
        		{
        			usleep(ms * 1000);
        		}
        		
        		static uint64_t current_time_ms(void)
        		{
        			struct timespec ts;
        			if (clock_gettime(CLOCK_MONOTONIC, &ts))
        			exit(1);
        			return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
        		}
        		
        		static void thread_start(void* (*fn)(void*), void* arg)
        		{
        			pthread_t th;
        			pthread_attr_t attr;
        			pthread_attr_init(&attr);
        			pthread_attr_setstacksize(&attr, 128 << 10);
        			int i;
        			for (i = 0; i < 100; i++) {
        				if (pthread_create(&th, &attr, fn, arg) == 0) {
        					pthread_attr_destroy(&attr);
        					return;
        				}
        				if (errno == EAGAIN) {
        					usleep(50);
        					continue;
        				}
        				break;
        			}
        			exit(1);
        		}
        		
        		typedef struct {
        			pthread_mutex_t mu;
        			pthread_cond_t cv;
        			int state;
        		} event_t;
        		
        		static void event_init(event_t* ev)
        		{
        			if (pthread_mutex_init(&ev->mu, 0))
        			exit(1);
        			if (pthread_cond_init(&ev->cv, 0))
        			exit(1);
        			ev->state = 0;
        		}
        		
        		static void event_reset(event_t* ev)
        		{
        			ev->state = 0;
        		}
        		
        		static void event_set(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			if (ev->state)
        			exit(1);
        			ev->state = 1;
        			pthread_mutex_unlock(&ev->mu);
        			pthread_cond_broadcast(&ev->cv);
        		}
        		
        		static void event_wait(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			while (!ev->state)
        				pthread_cond_wait(&ev->cv, &ev->mu);
        			pthread_mutex_unlock(&ev->mu);
        		}
        		
        		static int event_isset(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		static int event_timedwait(event_t* ev, uint64_t timeout)
        		{
        			uint64_t start = current_time_ms();
        			uint64_t now = start;
        			pthread_mutex_lock(&ev->mu);
        			for (;;) {
        				if (ev->state)
        					break;
        				uint64_t remain = timeout - (now - start);
        				struct timespec ts;
        				ts.tv_sec = remain / 1000;
        				ts.tv_nsec = (remain % 1000) * 1000 * 1000;
        				pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
        				now = current_time_ms();
        				if (now - start > timeout)
        					break;
        			}
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		/*
        		 * Redefinitions to match the linux types used in common_usb.h.
        		 */
        		
        		struct usb_endpoint_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bEndpointAddress;
        			uint8_t bmAttributes;
        			uint16_t wMaxPacketSize;
        			uint8_t bInterval;
        			uint8_t bRefresh;
        			uint8_t bSynchAddress;
        		} __attribute__((packed));
        		
        		struct usb_device_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint16_t idVendor;
        			uint16_t idProduct;
        			uint16_t bcdDevice;
        			uint8_t iManufacturer;
        			uint8_t iProduct;
        			uint8_t iSerialNumber;
        			uint8_t bNumConfigurations;
        		} __attribute__((packed));
        		
        		struct usb_config_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t wTotalLength;
        			uint8_t bNumInterfaces;
        			uint8_t bConfigurationValue;
        			uint8_t iConfiguration;
        			uint8_t bmAttributes;
        			uint8_t bMaxPower;
        		} __attribute__((packed));
        		
        		struct usb_interface_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bNumEndpoints;
        			uint8_t bInterfaceClass;
        			uint8_t bInterfaceSubClass;
        			uint8_t bInterfaceProtocol;
        			uint8_t iInterface;
        		} __attribute__((packed));
        		
        		struct usb_ctrlrequest {
        			uint8_t bRequestType;
        			uint8_t bRequest;
        			uint16_t wValue;
        			uint16_t wIndex;
        			uint16_t wLength;
        		} __attribute__((packed));
        		
        		struct usb_qualifier_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint8_t bNumConfigurations;
        			uint8_t bRESERVED;
        		} __attribute__((packed));
        		
        		#define USB_TYPE_MASK (0x03 << 5)
        		#define USB_TYPE_STANDARD (0x00 << 5)
        		#define USB_TYPE_CLASS (0x01 << 5)
        		#define USB_TYPE_VENDOR (0x02 << 5)
        		#define USB_TYPE_RESERVED (0x03 << 5)
        		
        		#define USB_DT_DEVICE 0x01
        		#define USB_DT_CONFIG 0x02
        		#define USB_DT_STRING 0x03
        		#define USB_DT_INTERFACE 0x04
        		#define USB_DT_ENDPOINT 0x05
        		#define USB_DT_DEVICE_QUALIFIER 0x06
        		#define USB_DT_OTHER_SPEED_CONFIG 0x07
        		#define USB_DT_INTERFACE_POWER 0x08
        		#define USB_DT_OTG 0x09
        		#define USB_DT_DEBUG 0x0a
        		#define USB_DT_INTERFACE_ASSOCIATION 0x0b
        		#define USB_DT_SECURITY 0x0c
        		#define USB_DT_KEY 0x0d
        		#define USB_DT_ENCRYPTION_TYPE 0x0e
        		#define USB_DT_BOS 0x0f
        		#define USB_DT_DEVICE_CAPABILITY 0x10
        		#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
        		#define USB_DT_WIRE_ADAPTER 0x21
        		#define USB_DT_RPIPE 0x22
        		#define USB_DT_CS_RADIO_CONTROL 0x23
        		#define USB_DT_PIPE_USAGE 0x24
        		#define USB_DT_SS_ENDPOINT_COMP 0x30
        		#define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31
        		
        		#define USB_REQ_GET_STATUS 0x00
        		#define USB_REQ_CLEAR_FEATURE 0x01
        		#define USB_REQ_SET_FEATURE 0x03
        		#define USB_REQ_SET_ADDRESS 0x05
        		#define USB_REQ_GET_DESCRIPTOR 0x06
        		#define USB_REQ_SET_DESCRIPTOR 0x07
        		#define USB_REQ_GET_CONFIGURATION 0x08
        		#define USB_REQ_SET_CONFIGURATION 0x09
        		#define USB_REQ_GET_INTERFACE 0x0A
        		#define USB_REQ_SET_INTERFACE 0x0B
        		#define USB_REQ_SYNCH_FRAME 0x0C
        		#define USB_REQ_SET_SEL 0x30
        		#define USB_REQ_SET_ISOCH_DELAY 0x31
        		
        		#define USB_REQ_SET_ENCRYPTION 0x0D
        		#define USB_REQ_GET_ENCRYPTION 0x0E
        		#define USB_REQ_RPIPE_ABORT 0x0E
        		#define USB_REQ_SET_HANDSHAKE 0x0F
        		#define USB_REQ_RPIPE_RESET 0x0F
        		#define USB_REQ_GET_HANDSHAKE 0x10
        		#define USB_REQ_SET_CONNECTION 0x11
        		#define USB_REQ_SET_SECURITY_DATA 0x12
        		#define USB_REQ_GET_SECURITY_DATA 0x13
        		#define USB_REQ_SET_WUSB_DATA 0x14
        		#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
        		#define USB_REQ_LOOPBACK_DATA_READ 0x16
        		#define USB_REQ_SET_INTERFACE_DS 0x17
        		
        		#define USB_REQ_GET_PARTNER_PDO 20
        		#define USB_REQ_GET_BATTERY_STATUS 21
        		#define USB_REQ_SET_PDO 22
        		#define USB_REQ_GET_VDM 23
        		#define USB_REQ_SEND_VDM 24
        		
        		#define USB_MAX_IFACE_NUM 4
        		#define USB_MAX_EP_NUM 32
        		#define USB_MAX_FDS 6
        		
        		struct usb_endpoint_index {
        			struct usb_endpoint_descriptor desc;
        			int handle;
        		};
        		
        		struct usb_iface_index {
        			struct usb_interface_descriptor* iface;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bInterfaceClass;
        			struct usb_endpoint_index eps[USB_MAX_EP_NUM];
        			int eps_num;
        		};
        		
        		struct usb_device_index {
        			struct usb_device_descriptor* dev;
        			struct usb_config_descriptor* config;
        			uint8_t bDeviceClass;
        			uint8_t bMaxPower;
        			int config_length;
        			struct usb_iface_index ifaces[USB_MAX_IFACE_NUM];
        			int ifaces_num;
        			int iface_cur;
        		};
        		
        		struct usb_info {
        			int fd;
        			struct usb_device_index index;
        		};
        		
        		static struct usb_info usb_devices[USB_MAX_FDS];
        		static int usb_devices_num;
        		
        		static bool parse_usb_descriptor(const char* buffer, size_t length, struct usb_device_index* index)
        		{
        			if (length < sizeof(*index->dev) + sizeof(*index->config))
        				return false;
        			memset(index, 0, sizeof(*index));
        			index->dev = (struct usb_device_descriptor*)buffer;
        			index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev));
        			index->bDeviceClass = index->dev->bDeviceClass;
        			index->bMaxPower = index->config->bMaxPower;
        			index->config_length = length - sizeof(*index->dev);
        			index->iface_cur = -1;
        			size_t offset = 0;
        			while (true) {
        				if (offset + 1 >= length)
        					break;
        				uint8_t desc_length = buffer[offset];
        				uint8_t desc_type = buffer[offset + 1];
        				if (desc_length <= 2)
        					break;
        				if (offset + desc_length > length)
        					break;
        				if (desc_type == USB_DT_INTERFACE && index->ifaces_num < USB_MAX_IFACE_NUM) {
        					struct usb_interface_descriptor* iface = (struct usb_interface_descriptor*)(buffer + offset);
        					index->ifaces[index->ifaces_num].iface = iface;
        					index->ifaces[index->ifaces_num].bInterfaceNumber = iface->bInterfaceNumber;
        					index->ifaces[index->ifaces_num].bAlternateSetting = iface->bAlternateSetting;
        					index->ifaces[index->ifaces_num].bInterfaceClass = iface->bInterfaceClass;
        					index->ifaces_num++;
        				}
        				if (desc_type == USB_DT_ENDPOINT && index->ifaces_num > 0) {
        					struct usb_iface_index* iface = &index->ifaces[index->ifaces_num - 1];
        					if (iface->eps_num < USB_MAX_EP_NUM) {
        						memcpy(&iface->eps[iface->eps_num].desc, buffer + offset, sizeof(iface->eps[iface->eps_num].desc));
        						iface->eps_num++;
        					}
        				}
        				offset += desc_length;
        			}
        			return true;
        		}
        		
        		static struct usb_device_index* add_usb_index(int fd, const char* dev, size_t dev_len)
        		{
        			int i = __atomic_fetch_add(&usb_devices_num, 1, __ATOMIC_RELAXED);
        			if (i >= USB_MAX_FDS)
        				return NULL;
        			int rv = 0;
        		rv = parse_usb_descriptor(dev, dev_len, &usb_devices[i].index);
        			if (!rv)
        				return NULL;
        			__atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE);
        			return &usb_devices[i].index;
        		}
        		
        		static struct usb_device_index* lookup_usb_index(int fd)
        		{
        			int i;
        			for (i = 0; i < USB_MAX_FDS; i++) {
        				if (__atomic_load_n(&usb_devices[i].fd, __ATOMIC_ACQUIRE) == fd) {
        					return &usb_devices[i].index;
        				}
        			}
        			return NULL;
        		}
        		
        		struct vusb_connect_string_descriptor {
        			uint32_t len;
        			char* str;
        		} __attribute__((packed));
        		
        		struct vusb_connect_descriptors {
        			uint32_t qual_len;
        			char* qual;
        			uint32_t bos_len;
        			char* bos;
        			uint32_t strs_len;
        			struct vusb_connect_string_descriptor strs[0];
        		} __attribute__((packed));
        		
        		static const char default_string[] = {
        		    8, USB_DT_STRING,
        		    's', 0, 'y', 0, 'z', 0
        		};
        		
        		static const char default_lang_id[] = {
        		    4, USB_DT_STRING,
        		    0x09, 0x04
        		};
        		
        		static bool lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs,
        						       const struct usb_ctrlrequest* ctrl,
        						       char** response_data, uint32_t* response_length)
        		{
        			struct usb_device_index* index = lookup_usb_index(fd);
        			uint8_t str_idx;
        			if (!index)
        				return false;
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_GET_DESCRIPTOR:
        					switch (ctrl->wValue >> 8) {
        					case USB_DT_DEVICE:
        						*response_data = (char*)index->dev;
        						*response_length = sizeof(*index->dev);
        						return true;
        					case USB_DT_CONFIG:
        						*response_data = (char*)index->config;
        						*response_length = index->config_length;
        						return true;
        					case USB_DT_STRING:
        						str_idx = (uint8_t)ctrl->wValue;
        						if (descs && str_idx < descs->strs_len) {
        							*response_data = descs->strs[str_idx].str;
        							*response_length = descs->strs[str_idx].len;
        							return true;
        						}
        						if (str_idx == 0) {
        							*response_data = (char*)&default_lang_id[0];
        							*response_length = default_lang_id[0];
        							return true;
        						}
        						*response_data = (char*)&default_string[0];
        						*response_length = default_string[0];
        						return true;
        					case USB_DT_BOS:
        						*response_data = descs->bos;
        						*response_length = descs->bos_len;
        						return true;
        					case USB_DT_DEVICE_QUALIFIER:
        						if (!descs->qual) {
        							struct usb_qualifier_descriptor* qual =
        							    (struct usb_qualifier_descriptor*)response_data;
        							qual->bLength = sizeof(*qual);
        							qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
        							qual->bcdUSB = index->dev->bcdUSB;
        							qual->bDeviceClass = index->dev->bDeviceClass;
        							qual->bDeviceSubClass = index->dev->bDeviceSubClass;
        							qual->bDeviceProtocol = index->dev->bDeviceProtocol;
        							qual->bMaxPacketSize0 = index->dev->bMaxPacketSize0;
        							qual->bNumConfigurations = index->dev->bNumConfigurations;
        							qual->bRESERVED = 0;
        							*response_length = sizeof(*qual);
        							return true;
        						}
        						*response_data = descs->qual;
        						*response_length = descs->qual_len;
        						return true;
        					default:
        						break;
        					}
        					break;
        				default:
        					break;
        				}
        				break;
        			default:
        				break;
        			}
        			return false;
        		}
        		
        		typedef bool (*lookup_connect_out_response_t)(int fd, const struct vusb_connect_descriptors* descs,
        							      const struct usb_ctrlrequest* ctrl, bool* done);
        		
        		static bool lookup_connect_response_out_generic(int fd, const struct vusb_connect_descriptors* descs,
        								const struct usb_ctrlrequest* ctrl, bool* done)
        		{
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_SET_CONFIGURATION:
        					*done = true;
        					return true;
        				default:
        					break;
        				}
        				break;
        			}
        			return false;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static int vhci_open(void)
        		{
        			return open("/dev/vhci", O_RDWR);
        		}
        		
        		static int vhci_setport(int fd, u_int port)
        		{
        			struct vhci_ioc_set_port args;
        			args.port = port;
        			return ioctl(fd, VHCI_IOC_SET_PORT, &args);
        		}
        		
        		static int vhci_usb_attach(int fd)
        		{
        			return ioctl(fd, VHCI_IOC_USB_ATTACH, NULL);
        		}
        		
        		static int vhci_usb_recv(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = read(fd, ptr, size);
        				if (done < 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		static int vhci_usb_send(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = write(fd, ptr, size);
        				if (done <= 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static volatile long syz_usb_connect_impl(uint64_t speed, uint64_t dev_len,
        							  const char* dev, const struct vusb_connect_descriptors* descs,
        							  lookup_connect_out_response_t lookup_connect_response_out)
        		{
        			struct usb_device_index* index;
        			int portnum, fd, rv;
        			bool done;
        			portnum = procid + 1;
        			if (!dev) {
        				return -1;
        			}
        			if (portnum != 1) {
        				/* For now, we support only one proc. */
        				return -1;
        			}
        			fd = vhci_open();
        			if (fd < 0) {
        				return -1;
        			}
        			index = add_usb_index(fd, dev, dev_len);
        			if (!index) {
        				goto err;
        			}
        			rv = vhci_setport(fd, portnum);
        			if (rv != 0) {
        				goto err;
        			}
        			rv = vhci_usb_attach(fd);
        			if (rv != 0) {
        				goto err;
        			}
        			done = false;
        			while (!done) {
        				vhci_request_t req;
        				rv = vhci_usb_recv(fd, &req, sizeof(req));
        				if (rv != 0) {
        					goto err;
        				}
        				if (req.type != VHCI_REQ_CTRL) {
        					goto err;
        				}
        				char* response_data = NULL;
        				uint32_t response_length = 0;
        				char data[4096];
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					bool response_found = false;
        		response_found = lookup_connect_response_in(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &response_data, &response_length);
        					if (!response_found) {
        						goto err;
        					}
        				} else {
        					if (!lookup_connect_response_out(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &done)) {
        						goto err;
        					}
        					response_data = NULL;
        					response_length = UGETW(req.u.ctrl.wLength);
        				}
        				if ((req.u.ctrl.bmRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        				    req.u.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
        					/* TODO: possibly revisit */
        				}
        				if (response_length > sizeof(data))
        					response_length = 0;
        				if ((uint32_t)UGETW(req.u.ctrl.wLength) < response_length)
        					response_length = UGETW(req.u.ctrl.wLength);
        				if (response_data)
        					memcpy(data, response_data, response_length);
        				else
        					memset(data, 0, response_length);
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					if (response_length > 0) {
        						vhci_response_t res;
        						res.size = response_length;
        						rv = vhci_usb_send(fd, &res, sizeof(res));
        						if (rv == 0)
        							rv = vhci_usb_send(fd, data, response_length);
        					}
        				} else {
        					rv = vhci_usb_recv(fd, data, response_length);
        				}
        				if (rv < 0) {
        					goto err;
        				}
        			}
        			sleep_ms(200);
        			return fd;
        		
        		err:
        			close(fd);
        			return -1;
        		}
        		
        		static volatile long syz_usb_connect(volatile long a0, volatile long a1,
        						     volatile long a2, volatile long a3)
        		{
        			uint64_t speed = a0;
        			uint64_t dev_len = a1;
        			const char* dev = (const char*)a2;
        			const struct vusb_connect_descriptors* descs = (const struct vusb_connect_descriptors*)a3;
        			return syz_usb_connect_impl(speed, dev_len, dev, descs,
        						    &lookup_connect_response_out_generic);
        		}
        		
        		static volatile long syz_usb_disconnect(volatile long a0)
        		{
        			int fd = a0;
        			int rv = close(fd);
        			sleep_ms(200);
        			return rv;
        		}
        		
        		static void sandbox_common()
        		{
        			if (setsid() == -1)
        			exit(1);
        			struct rlimit rlim;
        			rlim.rlim_cur = rlim.rlim_max = 8 << 20;
        			setrlimit(RLIMIT_MEMLOCK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_FSIZE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_STACK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 0;
        			setrlimit(RLIMIT_CORE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 256;
        			setrlimit(RLIMIT_NOFILE, &rlim);
        		}
        		
        		static void loop();
        		
        		static int do_sandbox_none(void)
        		{
        			sandbox_common();
        			loop();
        			return 0;
        		}
        		
        		static long syz_execute_func(volatile long text)
        		{
        			volatile long p[8] = {0};
        			(void)p;
        			asm volatile("" ::"r"(0l), "r"(1l), "r"(2l), "r"(3l), "r"(4l), "r"(5l), "r"(6l),
        				     "r"(7l), "r"(8l), "r"(9l), "r"(10l), "r"(11l), "r"(12l), "r"(13l));
        		((void (*)(void))(text))();
        			return 0;
        		}
        		
        		struct thread_t {
        			int created, call;
        			event_t ready, done;
        		};
        		
        		static struct thread_t threads[16];
        		static void execute_call(int call);
        		static int running;
        		
        		static void* thr(void* arg)
        		{
        			struct thread_t* th = (struct thread_t*)arg;
        			for (;;) {
        				event_wait(&th->ready);
        				event_reset(&th->ready);
        				execute_call(th->call);
        				__atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
        				event_set(&th->done);
        			}
        			return 0;
        		}
        		
        		static void execute_one(void)
        		{
        			int i, call, thread;
        			for (call = 0; call < 15; call++) {
        				for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) {
        					struct thread_t* th = &threads[thread];
        					if (!th->created) {
        						th->created = 1;
        						event_init(&th->ready);
        						event_init(&th->done);
        						event_set(&th->done);
        						thread_start(thr, th);
        					}
        					if (!event_isset(&th->done))
        						continue;
        					event_reset(&th->done);
        					th->call = call;
        					__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        					event_set(&th->ready);
        					event_timedwait(&th->done, 45 + (call == 13 ? 3000 : 0) + (call == 14 ? 300 : 0));
        					break;
        				}
        			}
        			for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
        				sleep_ms(1);
        		}
        		
        		static void execute_one(void);
        		
        		#define WAIT_FLAGS 0
        		
        		static void loop(void)
        		{
        			int iter;
        			for (iter = 0;; iter++) {
        				int pid = fork();
        				if (pid < 0)
        			exit(1);
        				if (pid == 0) {
        					execute_one();
        					exit(0);
        				}
        				int status = 0;
        				uint64_t start = current_time_ms();
        				for (;;) {
        					if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        						break;
        					sleep_ms(1);
        					if (current_time_ms() - start < 5 * 1000)
        						continue;
        					kill_and_wait(pid, &status);
        					break;
        				}
        			}
        		}
        		
        		#ifndef SYS_access
        		#define SYS_access 33
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_lseek
        		#define SYS_lseek 199
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_shmctl
        		#define SYS_shmctl 443
        		#endif
        		#ifndef SYS_shmget
        		#define SYS_shmget 231
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_socketpair
        		#define SYS_socketpair 135
        		#endif
        		
        		uint64_t r[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_socketpair, 1ul, 1ul, 0, 0x20000000ul);
        				if (res != -1) {
        		r[0] = *(uint32_t*)0x20000000;
        		r[1] = *(uint32_t*)0x20000004;
        				}
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = 8;
        				syscall(SYS_getpeername, r[1], 0x20000040ul, 0x20000080ul);
        				break;
        			case 2:
        				syscall(SYS_lseek, r[0], 5ul, 1ul);
        				break;
        			case 3:
        		memcpy((void*)0x200000c0, "./file0\000", 8);
        				syscall(SYS_access, 0x200000c0ul, 2ul);
        				break;
        			case 4:
        				res = syscall(SYS_socket, 1ul, 1ul, 0);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 5:
        		*(uint64_t*)0x200014c0 = 0x20000100;
        		*(uint32_t*)0x200014c8 = 0xc;
        		*(uint64_t*)0x200014d0 = 0x20001340;
        		*(uint64_t*)0x20001340 = 0x20000140;
        		*(uint64_t*)0x20001348 = 0x4d;
        		*(uint64_t*)0x20001350 = 0x200001c0;
        		*(uint64_t*)0x20001358 = 0x8d;
        		*(uint64_t*)0x20001360 = 0x20000280;
        		*(uint64_t*)0x20001368 = 0x25;
        		*(uint64_t*)0x20001370 = 0x200002c0;
        		*(uint64_t*)0x20001378 = 0x1000;
        		*(uint64_t*)0x20001380 = 0x200012c0;
        		*(uint64_t*)0x20001388 = 0x5f;
        		*(uint64_t*)0x200014d8 = 5;
        		*(uint64_t*)0x200014e0 = 0x200013c0;
        		*(uint64_t*)0x200014e8 = 0xd8;
        		*(uint32_t*)0x200014f0 = 0;
        				syscall(SYS_recvmsg, r[2], 0x200014c0ul, 0x40ul);
        				break;
        			case 6:
        				res = syscall(SYS_shmget, 0x798dd814ul, 0x3000ul, 0x60ul, 0x20ffc000ul);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 7:
        				syscall(SYS_shmctl, r[3], 4ul, 0);
        				break;
        			case 8:
        				res = syscall(SYS_socket, 0x18ul, 5ul, 0x3e);
        				if (res != -1)
        						r[4] = res;
        				break;
        			case 9:
        				syscall(SYS_mmap, 0x20ffd000ul, 0x2000ul, 1ul, 0x210ul, r[4], 0ul, 0x100000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\x5e\xca\xd8\xbb\x62\x7a\x3a\x76\x50\x4a\xd2\xe0\x3a\x19\x6c\x8c\x75\xbb\xf9\x78\xbb\xa9\x8c\x2d\xf5\xe2\x6a\x5d\x25\xf8\x4e\x08\x3d\xe8\xf2\x7b\x7f\xfe\xda\x58\x1b\x9a\xdc\x9a\xae\xeb\x97\xdb\x43\x38\x22\xdb\xbb\xf3\xa9\x00\x27\x38\x4a\xbb\x2e\x61\x43\x27\xb7\xdd\xd4\xbc\xbb\x87\x04\xd5\x75\x56\x3b\x2e\xcc\x9b\x13\xeb\xcc\x1d\x5f\x0a\xd4\xfd\x25\x0a\x79\xa3\x98\x3b\x54\x05\xaa\xe0\x36\x55\x03\x0e\x16\x0b\x22\xa6\x61\xf0\x1c\xab\xaa\xf0\xfe\x28\xfd\xed\x43\xed\xee\xea\xba\x8e\x29\xe7\xa5\x5e\xd1\x60", 126);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\x41\xb3\x7d\x67\x16\xc4\xc1\x19\x5d\x3c\xc4\x63\xa6\xf6\xb3\x86\x5f\x64\x64\x40\x0f\x91\xfc\xc4\x02\xb5\x8e\x45\x0c\xd3\x10\xfa\xf2\x0f\x2b\x31\xc4\xc1\xed\xdd\x69\x0b\xc4\xc2\x0d\x0c\xd1", 48);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000100, "\x00\x30\x4f\xf9\x82\x3a\x61\x45\xaf\xcf\xab\xe5\x9e\x7b\x44\x8a\xf5\x19\x13\x09\x95\x66\xd6\xb4\x99\x44\x63\xd5\x2f\xf7\x0c\x87\xd9\x5b\xd6\x58\xf3\x13\xdd\x8f\x6e\xf2\xae\x26\xb1\x30\xa2\x96\xec\x42\x60\x64\xb7\x96\x66\x1a\x0a", 57);
        		memcpy((void*)0x20000140, "\x8e\xb1\x2c\x0b\x12\xb9\xe8\x10\x70\x0f\x13\xd7\x30\x40\x08\x7e\x8a\x51\xc0\xe0\x50\x46\x23\xd6\x84\x34\x51\xcc\xdf\xfc\xe9", 31);
        				res = syz_usb_connect(0x374, 0x39, 0x20000100, 0x20000140);
        				if (res != -1)
        						r[5] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[5]);
        				break;
        			}
        		
        		}
        		int main(void)
        		{
        				syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul);
        					do_sandbox_none();
        			return 0;
        		}
        		
        		<stdin>: In function 'syz_usb_connect_impl':
        		<stdin>:596:63: error: unknown type name 'usb_ctrlrequest'
        		<stdin>:601:55: error: unknown type name 'usb_ctrlrequest'
        		
        		compiler invocation: /syzkaller/netbsd/src/../tools/bin/x86_64--netbsd-g++ [-o /tmp/syz-executor457337838 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/13 (0.24s)
        	csource_test.go:123: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Sandbox:none Fault:false FaultCall:0 FaultNth:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false UseTmpDir:true HandleSegv:false Repro:false Trace:true}
        		program:
        		socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
        		getpeername$unix(r1, &(0x7f0000000040)=@abs, &(0x7f0000000080)=0x8)
        		lseek(r0, 0x5, 0x1)
        		access(&(0x7f00000000c0)='./file0\x00', 0x2)
        		r2 = socket$unix(0x1, 0x1, 0x0)
        		recvmsg(r2, &(0x7f00000014c0)={&(0x7f0000000100)=@in6, 0xc, &(0x7f0000001340)=[{&(0x7f0000000140)=""/77, 0x4d}, {&(0x7f00000001c0)=""/141, 0x8d}, {&(0x7f0000000280)=""/37, 0x25}, {&(0x7f00000002c0)=""/4096, 0x1000}, {&(0x7f00000012c0)=""/95, 0x5f}], 0x5, &(0x7f00000013c0)=""/216, 0xd8}, 0x40)
        		r3 = shmget(0x1, 0x3000, 0x60, &(0x7f0000ffc000/0x3000)=nil)
        		shmctl$SHM_UNLOCK(r3, 0x4)
        		r4 = socket$inet6(0x18, 0x5, 0x3e)
        		mmap(&(0x7f0000ffd000/0x2000)=nil, 0x2000, 0x1, 0x210, r4, 0x0, 0x100000000)
        		syz_emit_ethernet(0x7e, &(0x7f0000000000)="5ecad8bb627a3a76504ad2e03a196c8c75bbf978bba98c2df5e26a5d25f84e083de8f27b7ffeda581b9adc9aaeeb97db433822dbbbf3a90027384abb2e614327b7ddd4bcbb8704d575563b2ecc9b13ebcc1d5f0ad4fd250a79a3983b5405aae03655030e160b22a661f01cabaaf0fe28fded43edeeeaba8e29e7a55ed160")
        		syz_execute_func(&(0x7f0000000080)="c441b37d6716c4c1195d3cc463a6f6b3865f6464400f91fcc402b58e450cd310faf20f2b31c4c1eddd690bc4c20d0cd1")
        		syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x2)
        		r5 = syz_usb_connect(0x374, 0x39, &(0x7f0000000100)="00304ff9823a6145afcfabe59e7b448af51913099566d6b4994463d52ff70c87d95bd658f313dd8f6ef2ae26b130a296ec426064b796661a0a", &(0x7f0000000140)="8eb12c0b12b9e810700f13d73040087e8a51c0e0504623d6843451ccdffce9")
        		syz_usb_disconnect(r5)
        		
        	csource_test.go:124: failed to build program:
        		// autogenerated by syzkaller (https://github.com/google/syzkaller)
        		
        		#define _GNU_SOURCE 
        		
        		#include <dev/usb/usb.h>
        		#include <dev/usb/usbhid.h>
        		#include <dev/usb/vhci.h>
        		#include <dirent.h>
        		#include <endian.h>
        		#include <errno.h>
        		#include <fcntl.h>
        		#include <pthread.h>
        		#include <pwd.h>
        		#include <signal.h>
        		#include <stdarg.h>
        		#include <stdbool.h>
        		#include <stdint.h>
        		#include <stdio.h>
        		#include <stdlib.h>
        		#include <string.h>
        		#include <sys/ioctl.h>
        		#include <sys/resource.h>
        		#include <sys/stat.h>
        		#include <sys/syscall.h>
        		#include <sys/types.h>
        		#include <sys/wait.h>
        		#include <time.h>
        		#include <unistd.h>
        		
        		static unsigned long long procid;
        		
        		static void kill_and_wait(int pid, int* status)
        		{
        			kill(pid, SIGKILL);
        			while (waitpid(-1, status, 0) != pid) {
        			}
        		}
        		
        		static void sleep_ms(uint64_t ms)
        		{
        			usleep(ms * 1000);
        		}
        		
        		static uint64_t current_time_ms(void)
        		{
        			struct timespec ts;
        			if (clock_gettime(CLOCK_MONOTONIC, &ts))
        			exit(1);
        			return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
        		}
        		
        		static void use_temporary_dir(void)
        		{
        			char tmpdir_template[] = "./syzkaller.XXXXXX";
        			char* tmpdir = mkdtemp(tmpdir_template);
        			if (!tmpdir)
        			exit(1);
        			if (chmod(tmpdir, 0777))
        			exit(1);
        			if (chdir(tmpdir))
        			exit(1);
        		}
        		
        		static void remove_dir(const char* dir)
        		{
        			DIR* dp;
        			struct dirent* ep;
        			dp = opendir(dir);
        			if (dp == NULL)
        			exit(1);
        			while ((ep = readdir(dp))) {
        				if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
        					continue;
        				char filename[FILENAME_MAX];
        				snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
        				struct stat st;
        				if (lstat(filename, &st))
        			exit(1);
        				if (S_ISDIR(st.st_mode)) {
        					remove_dir(filename);
        					continue;
        				}
        				if (unlink(filename))
        			exit(1);
        			}
        			closedir(dp);
        			if (rmdir(dir))
        			exit(1);
        		}
        		
        		static void thread_start(void* (*fn)(void*), void* arg)
        		{
        			pthread_t th;
        			pthread_attr_t attr;
        			pthread_attr_init(&attr);
        			pthread_attr_setstacksize(&attr, 128 << 10);
        			int i;
        			for (i = 0; i < 100; i++) {
        				if (pthread_create(&th, &attr, fn, arg) == 0) {
        					pthread_attr_destroy(&attr);
        					return;
        				}
        				if (errno == EAGAIN) {
        					usleep(50);
        					continue;
        				}
        				break;
        			}
        			exit(1);
        		}
        		
        		typedef struct {
        			pthread_mutex_t mu;
        			pthread_cond_t cv;
        			int state;
        		} event_t;
        		
        		static void event_init(event_t* ev)
        		{
        			if (pthread_mutex_init(&ev->mu, 0))
        			exit(1);
        			if (pthread_cond_init(&ev->cv, 0))
        			exit(1);
        			ev->state = 0;
        		}
        		
        		static void event_reset(event_t* ev)
        		{
        			ev->state = 0;
        		}
        		
        		static void event_set(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			if (ev->state)
        			exit(1);
        			ev->state = 1;
        			pthread_mutex_unlock(&ev->mu);
        			pthread_cond_broadcast(&ev->cv);
        		}
        		
        		static void event_wait(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			while (!ev->state)
        				pthread_cond_wait(&ev->cv, &ev->mu);
        			pthread_mutex_unlock(&ev->mu);
        		}
        		
        		static int event_isset(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		static int event_timedwait(event_t* ev, uint64_t timeout)
        		{
        			uint64_t start = current_time_ms();
        			uint64_t now = start;
        			pthread_mutex_lock(&ev->mu);
        			for (;;) {
        				if (ev->state)
        					break;
        				uint64_t remain = timeout - (now - start);
        				struct timespec ts;
        				ts.tv_sec = remain / 1000;
        				ts.tv_nsec = (remain % 1000) * 1000 * 1000;
        				pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
        				now = current_time_ms();
        				if (now - start > timeout)
        					break;
        			}
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		/*
        		 * Redefinitions to match the linux types used in common_usb.h.
        		 */
        		
        		struct usb_endpoint_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bEndpointAddress;
        			uint8_t bmAttributes;
        			uint16_t wMaxPacketSize;
        			uint8_t bInterval;
        			uint8_t bRefresh;
        			uint8_t bSynchAddress;
        		} __attribute__((packed));
        		
        		struct usb_device_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint16_t idVendor;
        			uint16_t idProduct;
        			uint16_t bcdDevice;
        			uint8_t iManufacturer;
        			uint8_t iProduct;
        			uint8_t iSerialNumber;
        			uint8_t bNumConfigurations;
        		} __attribute__((packed));
        		
        		struct usb_config_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t wTotalLength;
        			uint8_t bNumInterfaces;
        			uint8_t bConfigurationValue;
        			uint8_t iConfiguration;
        			uint8_t bmAttributes;
        			uint8_t bMaxPower;
        		} __attribute__((packed));
        		
        		struct usb_interface_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bNumEndpoints;
        			uint8_t bInterfaceClass;
        			uint8_t bInterfaceSubClass;
        			uint8_t bInterfaceProtocol;
        			uint8_t iInterface;
        		} __attribute__((packed));
        		
        		struct usb_ctrlrequest {
        			uint8_t bRequestType;
        			uint8_t bRequest;
        			uint16_t wValue;
        			uint16_t wIndex;
        			uint16_t wLength;
        		} __attribute__((packed));
        		
        		struct usb_qualifier_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint8_t bNumConfigurations;
        			uint8_t bRESERVED;
        		} __attribute__((packed));
        		
        		#define USB_TYPE_MASK (0x03 << 5)
        		#define USB_TYPE_STANDARD (0x00 << 5)
        		#define USB_TYPE_CLASS (0x01 << 5)
        		#define USB_TYPE_VENDOR (0x02 << 5)
        		#define USB_TYPE_RESERVED (0x03 << 5)
        		
        		#define USB_DT_DEVICE 0x01
        		#define USB_DT_CONFIG 0x02
        		#define USB_DT_STRING 0x03
        		#define USB_DT_INTERFACE 0x04
        		#define USB_DT_ENDPOINT 0x05
        		#define USB_DT_DEVICE_QUALIFIER 0x06
        		#define USB_DT_OTHER_SPEED_CONFIG 0x07
        		#define USB_DT_INTERFACE_POWER 0x08
        		#define USB_DT_OTG 0x09
        		#define USB_DT_DEBUG 0x0a
        		#define USB_DT_INTERFACE_ASSOCIATION 0x0b
        		#define USB_DT_SECURITY 0x0c
        		#define USB_DT_KEY 0x0d
        		#define USB_DT_ENCRYPTION_TYPE 0x0e
        		#define USB_DT_BOS 0x0f
        		#define USB_DT_DEVICE_CAPABILITY 0x10
        		#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
        		#define USB_DT_WIRE_ADAPTER 0x21
        		#define USB_DT_RPIPE 0x22
        		#define USB_DT_CS_RADIO_CONTROL 0x23
        		#define USB_DT_PIPE_USAGE 0x24
        		#define USB_DT_SS_ENDPOINT_COMP 0x30
        		#define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31
        		
        		#define USB_REQ_GET_STATUS 0x00
        		#define USB_REQ_CLEAR_FEATURE 0x01
        		#define USB_REQ_SET_FEATURE 0x03
        		#define USB_REQ_SET_ADDRESS 0x05
        		#define USB_REQ_GET_DESCRIPTOR 0x06
        		#define USB_REQ_SET_DESCRIPTOR 0x07
        		#define USB_REQ_GET_CONFIGURATION 0x08
        		#define USB_REQ_SET_CONFIGURATION 0x09
        		#define USB_REQ_GET_INTERFACE 0x0A
        		#define USB_REQ_SET_INTERFACE 0x0B
        		#define USB_REQ_SYNCH_FRAME 0x0C
        		#define USB_REQ_SET_SEL 0x30
        		#define USB_REQ_SET_ISOCH_DELAY 0x31
        		
        		#define USB_REQ_SET_ENCRYPTION 0x0D
        		#define USB_REQ_GET_ENCRYPTION 0x0E
        		#define USB_REQ_RPIPE_ABORT 0x0E
        		#define USB_REQ_SET_HANDSHAKE 0x0F
        		#define USB_REQ_RPIPE_RESET 0x0F
        		#define USB_REQ_GET_HANDSHAKE 0x10
        		#define USB_REQ_SET_CONNECTION 0x11
        		#define USB_REQ_SET_SECURITY_DATA 0x12
        		#define USB_REQ_GET_SECURITY_DATA 0x13
        		#define USB_REQ_SET_WUSB_DATA 0x14
        		#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
        		#define USB_REQ_LOOPBACK_DATA_READ 0x16
        		#define USB_REQ_SET_INTERFACE_DS 0x17
        		
        		#define USB_REQ_GET_PARTNER_PDO 20
        		#define USB_REQ_GET_BATTERY_STATUS 21
        		#define USB_REQ_SET_PDO 22
        		#define USB_REQ_GET_VDM 23
        		#define USB_REQ_SEND_VDM 24
        		
        		#define USB_MAX_IFACE_NUM 4
        		#define USB_MAX_EP_NUM 32
        		#define USB_MAX_FDS 6
        		
        		struct usb_endpoint_index {
        			struct usb_endpoint_descriptor desc;
        			int handle;
        		};
        		
        		struct usb_iface_index {
        			struct usb_interface_descriptor* iface;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bInterfaceClass;
        			struct usb_endpoint_index eps[USB_MAX_EP_NUM];
        			int eps_num;
        		};
        		
        		struct usb_device_index {
        			struct usb_device_descriptor* dev;
        			struct usb_config_descriptor* config;
        			uint8_t bDeviceClass;
        			uint8_t bMaxPower;
        			int config_length;
        			struct usb_iface_index ifaces[USB_MAX_IFACE_NUM];
        			int ifaces_num;
        			int iface_cur;
        		};
        		
        		struct usb_info {
        			int fd;
        			struct usb_device_index index;
        		};
        		
        		static struct usb_info usb_devices[USB_MAX_FDS];
        		static int usb_devices_num;
        		
        		static bool parse_usb_descriptor(const char* buffer, size_t length, struct usb_device_index* index)
        		{
        			if (length < sizeof(*index->dev) + sizeof(*index->config))
        				return false;
        			memset(index, 0, sizeof(*index));
        			index->dev = (struct usb_device_descriptor*)buffer;
        			index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev));
        			index->bDeviceClass = index->dev->bDeviceClass;
        			index->bMaxPower = index->config->bMaxPower;
        			index->config_length = length - sizeof(*index->dev);
        			index->iface_cur = -1;
        			size_t offset = 0;
        			while (true) {
        				if (offset + 1 >= length)
        					break;
        				uint8_t desc_length = buffer[offset];
        				uint8_t desc_type = buffer[offset + 1];
        				if (desc_length <= 2)
        					break;
        				if (offset + desc_length > length)
        					break;
        				if (desc_type == USB_DT_INTERFACE && index->ifaces_num < USB_MAX_IFACE_NUM) {
        					struct usb_interface_descriptor* iface = (struct usb_interface_descriptor*)(buffer + offset);
        					index->ifaces[index->ifaces_num].iface = iface;
        					index->ifaces[index->ifaces_num].bInterfaceNumber = iface->bInterfaceNumber;
        					index->ifaces[index->ifaces_num].bAlternateSetting = iface->bAlternateSetting;
        					index->ifaces[index->ifaces_num].bInterfaceClass = iface->bInterfaceClass;
        					index->ifaces_num++;
        				}
        				if (desc_type == USB_DT_ENDPOINT && index->ifaces_num > 0) {
        					struct usb_iface_index* iface = &index->ifaces[index->ifaces_num - 1];
        					if (iface->eps_num < USB_MAX_EP_NUM) {
        						memcpy(&iface->eps[iface->eps_num].desc, buffer + offset, sizeof(iface->eps[iface->eps_num].desc));
        						iface->eps_num++;
        					}
        				}
        				offset += desc_length;
        			}
        			return true;
        		}
        		
        		static struct usb_device_index* add_usb_index(int fd, const char* dev, size_t dev_len)
        		{
        			int i = __atomic_fetch_add(&usb_devices_num, 1, __ATOMIC_RELAXED);
        			if (i >= USB_MAX_FDS)
        				return NULL;
        			int rv = 0;
        		rv = parse_usb_descriptor(dev, dev_len, &usb_devices[i].index);
        			if (!rv)
        				return NULL;
        			__atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE);
        			return &usb_devices[i].index;
        		}
        		
        		static struct usb_device_index* lookup_usb_index(int fd)
        		{
        			int i;
        			for (i = 0; i < USB_MAX_FDS; i++) {
        				if (__atomic_load_n(&usb_devices[i].fd, __ATOMIC_ACQUIRE) == fd) {
        					return &usb_devices[i].index;
        				}
        			}
        			return NULL;
        		}
        		
        		struct vusb_connect_string_descriptor {
        			uint32_t len;
        			char* str;
        		} __attribute__((packed));
        		
        		struct vusb_connect_descriptors {
        			uint32_t qual_len;
        			char* qual;
        			uint32_t bos_len;
        			char* bos;
        			uint32_t strs_len;
        			struct vusb_connect_string_descriptor strs[0];
        		} __attribute__((packed));
        		
        		static const char default_string[] = {
        		    8, USB_DT_STRING,
        		    's', 0, 'y', 0, 'z', 0
        		};
        		
        		static const char default_lang_id[] = {
        		    4, USB_DT_STRING,
        		    0x09, 0x04
        		};
        		
        		static bool lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs,
        						       const struct usb_ctrlrequest* ctrl,
        						       char** response_data, uint32_t* response_length)
        		{
        			struct usb_device_index* index = lookup_usb_index(fd);
        			uint8_t str_idx;
        			if (!index)
        				return false;
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_GET_DESCRIPTOR:
        					switch (ctrl->wValue >> 8) {
        					case USB_DT_DEVICE:
        						*response_data = (char*)index->dev;
        						*response_length = sizeof(*index->dev);
        						return true;
        					case USB_DT_CONFIG:
        						*response_data = (char*)index->config;
        						*response_length = index->config_length;
        						return true;
        					case USB_DT_STRING:
        						str_idx = (uint8_t)ctrl->wValue;
        						if (descs && str_idx < descs->strs_len) {
        							*response_data = descs->strs[str_idx].str;
        							*response_length = descs->strs[str_idx].len;
        							return true;
        						}
        						if (str_idx == 0) {
        							*response_data = (char*)&default_lang_id[0];
        							*response_length = default_lang_id[0];
        							return true;
        						}
        						*response_data = (char*)&default_string[0];
        						*response_length = default_string[0];
        						return true;
        					case USB_DT_BOS:
        						*response_data = descs->bos;
        						*response_length = descs->bos_len;
        						return true;
        					case USB_DT_DEVICE_QUALIFIER:
        						if (!descs->qual) {
        							struct usb_qualifier_descriptor* qual =
        							    (struct usb_qualifier_descriptor*)response_data;
        							qual->bLength = sizeof(*qual);
        							qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
        							qual->bcdUSB = index->dev->bcdUSB;
        							qual->bDeviceClass = index->dev->bDeviceClass;
        							qual->bDeviceSubClass = index->dev->bDeviceSubClass;
        							qual->bDeviceProtocol = index->dev->bDeviceProtocol;
        							qual->bMaxPacketSize0 = index->dev->bMaxPacketSize0;
        							qual->bNumConfigurations = index->dev->bNumConfigurations;
        							qual->bRESERVED = 0;
        							*response_length = sizeof(*qual);
        							return true;
        						}
        						*response_data = descs->qual;
        						*response_length = descs->qual_len;
        						return true;
        					default:
        						break;
        					}
        					break;
        				default:
        					break;
        				}
        				break;
        			default:
        				break;
        			}
        			return false;
        		}
        		
        		typedef bool (*lookup_connect_out_response_t)(int fd, const struct vusb_connect_descriptors* descs,
        							      const struct usb_ctrlrequest* ctrl, bool* done);
        		
        		static bool lookup_connect_response_out_generic(int fd, const struct vusb_connect_descriptors* descs,
        								const struct usb_ctrlrequest* ctrl, bool* done)
        		{
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_SET_CONFIGURATION:
        					*done = true;
        					return true;
        				default:
        					break;
        				}
        				break;
        			}
        			return false;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static int vhci_open(void)
        		{
        			return open("/dev/vhci", O_RDWR);
        		}
        		
        		static int vhci_setport(int fd, u_int port)
        		{
        			struct vhci_ioc_set_port args;
        			args.port = port;
        			return ioctl(fd, VHCI_IOC_SET_PORT, &args);
        		}
        		
        		static int vhci_usb_attach(int fd)
        		{
        			return ioctl(fd, VHCI_IOC_USB_ATTACH, NULL);
        		}
        		
        		static int vhci_usb_recv(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = read(fd, ptr, size);
        				if (done < 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		static int vhci_usb_send(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = write(fd, ptr, size);
        				if (done <= 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static volatile long syz_usb_connect_impl(uint64_t speed, uint64_t dev_len,
        							  const char* dev, const struct vusb_connect_descriptors* descs,
        							  lookup_connect_out_response_t lookup_connect_response_out)
        		{
        			struct usb_device_index* index;
        			int portnum, fd, rv;
        			bool done;
        			portnum = procid + 1;
        			if (!dev) {
        				return -1;
        			}
        			if (portnum != 1) {
        				/* For now, we support only one proc. */
        				return -1;
        			}
        			fd = vhci_open();
        			if (fd < 0) {
        				return -1;
        			}
        			index = add_usb_index(fd, dev, dev_len);
        			if (!index) {
        				goto err;
        			}
        			rv = vhci_setport(fd, portnum);
        			if (rv != 0) {
        				goto err;
        			}
        			rv = vhci_usb_attach(fd);
        			if (rv != 0) {
        				goto err;
        			}
        			done = false;
        			while (!done) {
        				vhci_request_t req;
        				rv = vhci_usb_recv(fd, &req, sizeof(req));
        				if (rv != 0) {
        					goto err;
        				}
        				if (req.type != VHCI_REQ_CTRL) {
        					goto err;
        				}
        				char* response_data = NULL;
        				uint32_t response_length = 0;
        				char data[4096];
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					bool response_found = false;
        		response_found = lookup_connect_response_in(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &response_data, &response_length);
        					if (!response_found) {
        						goto err;
        					}
        				} else {
        					if (!lookup_connect_response_out(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &done)) {
        						goto err;
        					}
        					response_data = NULL;
        					response_length = UGETW(req.u.ctrl.wLength);
        				}
        				if ((req.u.ctrl.bmRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        				    req.u.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
        					/* TODO: possibly revisit */
        				}
        				if (response_length > sizeof(data))
        					response_length = 0;
        				if ((uint32_t)UGETW(req.u.ctrl.wLength) < response_length)
        					response_length = UGETW(req.u.ctrl.wLength);
        				if (response_data)
        					memcpy(data, response_data, response_length);
        				else
        					memset(data, 0, response_length);
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					if (response_length > 0) {
        						vhci_response_t res;
        						res.size = response_length;
        						rv = vhci_usb_send(fd, &res, sizeof(res));
        						if (rv == 0)
        							rv = vhci_usb_send(fd, data, response_length);
        					}
        				} else {
        					rv = vhci_usb_recv(fd, data, response_length);
        				}
        				if (rv < 0) {
        					goto err;
        				}
        			}
        			sleep_ms(200);
        			return fd;
        		
        		err:
        			close(fd);
        			return -1;
        		}
        		
        		static volatile long syz_usb_connect(volatile long a0, volatile long a1,
        						     volatile long a2, volatile long a3)
        		{
        			uint64_t speed = a0;
        			uint64_t dev_len = a1;
        			const char* dev = (const char*)a2;
        			const struct vusb_connect_descriptors* descs = (const struct vusb_connect_descriptors*)a3;
        			return syz_usb_connect_impl(speed, dev_len, dev, descs,
        						    &lookup_connect_response_out_generic);
        		}
        		
        		static volatile long syz_usb_disconnect(volatile long a0)
        		{
        			int fd = a0;
        			int rv = close(fd);
        			sleep_ms(200);
        			return rv;
        		}
        		
        		static void sandbox_common()
        		{
        			if (setsid() == -1)
        			exit(1);
        			struct rlimit rlim;
        			rlim.rlim_cur = rlim.rlim_max = 8 << 20;
        			setrlimit(RLIMIT_MEMLOCK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_FSIZE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_STACK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 0;
        			setrlimit(RLIMIT_CORE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 256;
        			setrlimit(RLIMIT_NOFILE, &rlim);
        		}
        		
        		static void loop();
        		
        		static int do_sandbox_none(void)
        		{
        			sandbox_common();
        			loop();
        			return 0;
        		}
        		
        		static long syz_execute_func(volatile long text)
        		{
        			volatile long p[8] = {0};
        			(void)p;
        			asm volatile("" ::"r"(0l), "r"(1l), "r"(2l), "r"(3l), "r"(4l), "r"(5l), "r"(6l),
        				     "r"(7l), "r"(8l), "r"(9l), "r"(10l), "r"(11l), "r"(12l), "r"(13l));
        		((void (*)(void))(text))();
        			return 0;
        		}
        		
        		struct thread_t {
        			int created, call;
        			event_t ready, done;
        		};
        		
        		static struct thread_t threads[16];
        		static void execute_call(int call);
        		static int running;
        		
        		static void* thr(void* arg)
        		{
        			struct thread_t* th = (struct thread_t*)arg;
        			for (;;) {
        				event_wait(&th->ready);
        				event_reset(&th->ready);
        				execute_call(th->call);
        				__atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
        				event_set(&th->done);
        			}
        			return 0;
        		}
        		
        		static void execute_one(void)
        		{
        			fprintf(stderr, "### start\n");
        			int i, call, thread;
        			for (call = 0; call < 15; call++) {
        				for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) {
        					struct thread_t* th = &threads[thread];
        					if (!th->created) {
        						th->created = 1;
        						event_init(&th->ready);
        						event_init(&th->done);
        						event_set(&th->done);
        						thread_start(thr, th);
        					}
        					if (!event_isset(&th->done))
        						continue;
        					event_reset(&th->done);
        					th->call = call;
        					__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        					event_set(&th->ready);
        					event_timedwait(&th->done, 45 + (call == 13 ? 3000 : 0) + (call == 14 ? 300 : 0));
        					break;
        				}
        			}
        			for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
        				sleep_ms(1);
        		}
        		
        		static void execute_one(void);
        		
        		#define WAIT_FLAGS 0
        		
        		static void loop(void)
        		{
        			int iter;
        			for (iter = 0;; iter++) {
        				char cwdbuf[32];
        				sprintf(cwdbuf, "./%d", iter);
        				if (mkdir(cwdbuf, 0777))
        			exit(1);
        				int pid = fork();
        				if (pid < 0)
        			exit(1);
        				if (pid == 0) {
        					if (chdir(cwdbuf))
        			exit(1);
        					execute_one();
        					exit(0);
        				}
        				int status = 0;
        				uint64_t start = current_time_ms();
        				for (;;) {
        					if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        						break;
        					sleep_ms(1);
        					if (current_time_ms() - start < 5 * 1000)
        						continue;
        					kill_and_wait(pid, &status);
        					break;
        				}
        				remove_dir(cwdbuf);
        			}
        		}
        		
        		#ifndef SYS_access
        		#define SYS_access 33
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_lseek
        		#define SYS_lseek 199
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_shmctl
        		#define SYS_shmctl 443
        		#endif
        		#ifndef SYS_shmget
        		#define SYS_shmget 231
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_socketpair
        		#define SYS_socketpair 135
        		#endif
        		
        		uint64_t r[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_socketpair, 1ul, 1ul, 0, 0x20000000ul);
        				fprintf(stderr, "### call=0 errno=%u\n", res == -1 ? errno : 0);
        				if (res != -1) {
        		r[0] = *(uint32_t*)0x20000000;
        		r[1] = *(uint32_t*)0x20000004;
        				}
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = 8;
        				res = syscall(SYS_getpeername, r[1], 0x20000040ul, 0x20000080ul);
        				fprintf(stderr, "### call=1 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 2:
        				res = syscall(SYS_lseek, r[0], 5ul, 1ul);
        				fprintf(stderr, "### call=2 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 3:
        		memcpy((void*)0x200000c0, "./file0\000", 8);
        				res = syscall(SYS_access, 0x200000c0ul, 2ul);
        				fprintf(stderr, "### call=3 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 4:
        				res = syscall(SYS_socket, 1ul, 1ul, 0);
        				fprintf(stderr, "### call=4 errno=%u\n", res == -1 ? errno : 0);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 5:
        		*(uint64_t*)0x200014c0 = 0x20000100;
        		*(uint32_t*)0x200014c8 = 0xc;
        		*(uint64_t*)0x200014d0 = 0x20001340;
        		*(uint64_t*)0x20001340 = 0x20000140;
        		*(uint64_t*)0x20001348 = 0x4d;
        		*(uint64_t*)0x20001350 = 0x200001c0;
        		*(uint64_t*)0x20001358 = 0x8d;
        		*(uint64_t*)0x20001360 = 0x20000280;
        		*(uint64_t*)0x20001368 = 0x25;
        		*(uint64_t*)0x20001370 = 0x200002c0;
        		*(uint64_t*)0x20001378 = 0x1000;
        		*(uint64_t*)0x20001380 = 0x200012c0;
        		*(uint64_t*)0x20001388 = 0x5f;
        		*(uint64_t*)0x200014d8 = 5;
        		*(uint64_t*)0x200014e0 = 0x200013c0;
        		*(uint64_t*)0x200014e8 = 0xd8;
        		*(uint32_t*)0x200014f0 = 0;
        				res = syscall(SYS_recvmsg, r[2], 0x200014c0ul, 0x40ul);
        				fprintf(stderr, "### call=5 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 6:
        				res = syscall(SYS_shmget, 0x798dd814ul, 0x3000ul, 0x60ul, 0x20ffc000ul);
        				fprintf(stderr, "### call=6 errno=%u\n", res == -1 ? errno : 0);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 7:
        				res = syscall(SYS_shmctl, r[3], 4ul, 0);
        				fprintf(stderr, "### call=7 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 8:
        				res = syscall(SYS_socket, 0x18ul, 5ul, 0x3e);
        				fprintf(stderr, "### call=8 errno=%u\n", res == -1 ? errno : 0);
        				if (res != -1)
        						r[4] = res;
        				break;
        			case 9:
        				res = syscall(SYS_mmap, 0x20ffd000ul, 0x2000ul, 1ul, 0x210ul, r[4], 0ul, 0x100000000ul);
        				fprintf(stderr, "### call=9 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\x5e\xca\xd8\xbb\x62\x7a\x3a\x76\x50\x4a\xd2\xe0\x3a\x19\x6c\x8c\x75\xbb\xf9\x78\xbb\xa9\x8c\x2d\xf5\xe2\x6a\x5d\x25\xf8\x4e\x08\x3d\xe8\xf2\x7b\x7f\xfe\xda\x58\x1b\x9a\xdc\x9a\xae\xeb\x97\xdb\x43\x38\x22\xdb\xbb\xf3\xa9\x00\x27\x38\x4a\xbb\x2e\x61\x43\x27\xb7\xdd\xd4\xbc\xbb\x87\x04\xd5\x75\x56\x3b\x2e\xcc\x9b\x13\xeb\xcc\x1d\x5f\x0a\xd4\xfd\x25\x0a\x79\xa3\x98\x3b\x54\x05\xaa\xe0\x36\x55\x03\x0e\x16\x0b\x22\xa6\x61\xf0\x1c\xab\xaa\xf0\xfe\x28\xfd\xed\x43\xed\xee\xea\xba\x8e\x29\xe7\xa5\x5e\xd1\x60", 126);
        				(void)res;
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\x41\xb3\x7d\x67\x16\xc4\xc1\x19\x5d\x3c\xc4\x63\xa6\xf6\xb3\x86\x5f\x64\x64\x40\x0f\x91\xfc\xc4\x02\xb5\x8e\x45\x0c\xd3\x10\xfa\xf2\x0f\x2b\x31\xc4\xc1\xed\xdd\x69\x0b\xc4\xc2\x0d\x0c\xd1", 48);
        				res = syz_execute_func(0x20000080);
        				fprintf(stderr, "### call=11 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 12:
        				(void)res;
        				break;
        			case 13:
        		memcpy((void*)0x20000100, "\x00\x30\x4f\xf9\x82\x3a\x61\x45\xaf\xcf\xab\xe5\x9e\x7b\x44\x8a\xf5\x19\x13\x09\x95\x66\xd6\xb4\x99\x44\x63\xd5\x2f\xf7\x0c\x87\xd9\x5b\xd6\x58\xf3\x13\xdd\x8f\x6e\xf2\xae\x26\xb1\x30\xa2\x96\xec\x42\x60\x64\xb7\x96\x66\x1a\x0a", 57);
        		memcpy((void*)0x20000140, "\x8e\xb1\x2c\x0b\x12\xb9\xe8\x10\x70\x0f\x13\xd7\x30\x40\x08\x7e\x8a\x51\xc0\xe0\x50\x46\x23\xd6\x84\x34\x51\xcc\xdf\xfc\xe9", 31);
        				res = syz_usb_connect(0x374, 0x39, 0x20000100, 0x20000140);
        				fprintf(stderr, "### call=13 errno=%u\n", res == -1 ? errno : 0);
        				if (res != -1)
        						r[5] = res;
        				break;
        			case 14:
        				res = syz_usb_disconnect(r[5]);
        				fprintf(stderr, "### call=14 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			}
        		
        		}
        		int main(void)
        		{
        				syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul);
        					use_temporary_dir();
        					do_sandbox_none();
        			return 0;
        		}
        		
        		<stdin>: In function 'syz_usb_connect_impl':
        		<stdin>:637:63: error: unknown type name 'usb_ctrlrequest'
        		<stdin>:642:55: error: unknown type name 'usb_ctrlrequest'
        		
        		compiler invocation: /syzkaller/netbsd/src/../tools/bin/x86_64--netbsd-g++ [-o /tmp/syz-executor685223541 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/14 (0.25s)
        	csource_test.go:123: opts: {Threaded:true Collide:true Repeat:true RepeatTimes:0 Procs:2 Sandbox:none Fault:false FaultCall:0 FaultNth:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false UseTmpDir:true HandleSegv:false Repro:true Trace:false}
        		program:
        		socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
        		getpeername$unix(r1, &(0x7f0000000040)=@abs, &(0x7f0000000080)=0x8)
        		lseek(r0, 0x5, 0x1)
        		access(&(0x7f00000000c0)='./file0\x00', 0x2)
        		r2 = socket$unix(0x1, 0x1, 0x0)
        		recvmsg(r2, &(0x7f00000014c0)={&(0x7f0000000100)=@in6, 0xc, &(0x7f0000001340)=[{&(0x7f0000000140)=""/77, 0x4d}, {&(0x7f00000001c0)=""/141, 0x8d}, {&(0x7f0000000280)=""/37, 0x25}, {&(0x7f00000002c0)=""/4096, 0x1000}, {&(0x7f00000012c0)=""/95, 0x5f}], 0x5, &(0x7f00000013c0)=""/216, 0xd8}, 0x40)
        		r3 = shmget(0x1, 0x3000, 0x60, &(0x7f0000ffc000/0x3000)=nil)
        		shmctl$SHM_UNLOCK(r3, 0x4)
        		r4 = socket$inet6(0x18, 0x5, 0x3e)
        		mmap(&(0x7f0000ffd000/0x2000)=nil, 0x2000, 0x1, 0x210, r4, 0x0, 0x100000000)
        		syz_emit_ethernet(0x7e, &(0x7f0000000000)="5ecad8bb627a3a76504ad2e03a196c8c75bbf978bba98c2df5e26a5d25f84e083de8f27b7ffeda581b9adc9aaeeb97db433822dbbbf3a90027384abb2e614327b7ddd4bcbb8704d575563b2ecc9b13ebcc1d5f0ad4fd250a79a3983b5405aae03655030e160b22a661f01cabaaf0fe28fded43edeeeaba8e29e7a55ed160")
        		syz_execute_func(&(0x7f0000000080)="c441b37d6716c4c1195d3cc463a6f6b3865f6464400f91fcc402b58e450cd310faf20f2b31c4c1eddd690bc4c20d0cd1")
        		syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x2)
        		r5 = syz_usb_connect(0x374, 0x39, &(0x7f0000000100)="00304ff9823a6145afcfabe59e7b448af51913099566d6b4994463d52ff70c87d95bd658f313dd8f6ef2ae26b130a296ec426064b796661a0a", &(0x7f0000000140)="8eb12c0b12b9e810700f13d73040087e8a51c0e0504623d6843451ccdffce9")
        		syz_usb_disconnect(r5)
        		
        	csource_test.go:124: failed to build program:
        		// autogenerated by syzkaller (https://github.com/google/syzkaller)
        		
        		#define _GNU_SOURCE 
        		
        		#include <dev/usb/usb.h>
        		#include <dev/usb/usbhid.h>
        		#include <dev/usb/vhci.h>
        		#include <dirent.h>
        		#include <endian.h>
        		#include <errno.h>
        		#include <fcntl.h>
        		#include <pthread.h>
        		#include <pwd.h>
        		#include <signal.h>
        		#include <stdarg.h>
        		#include <stdbool.h>
        		#include <stdint.h>
        		#include <stdio.h>
        		#include <stdlib.h>
        		#include <string.h>
        		#include <sys/ioctl.h>
        		#include <sys/resource.h>
        		#include <sys/stat.h>
        		#include <sys/syscall.h>
        		#include <sys/types.h>
        		#include <sys/wait.h>
        		#include <time.h>
        		#include <unistd.h>
        		
        		static unsigned long long procid;
        		
        		static void kill_and_wait(int pid, int* status)
        		{
        			kill(pid, SIGKILL);
        			while (waitpid(-1, status, 0) != pid) {
        			}
        		}
        		
        		static void sleep_ms(uint64_t ms)
        		{
        			usleep(ms * 1000);
        		}
        		
        		static uint64_t current_time_ms(void)
        		{
        			struct timespec ts;
        			if (clock_gettime(CLOCK_MONOTONIC, &ts))
        			exit(1);
        			return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
        		}
        		
        		static void use_temporary_dir(void)
        		{
        			char tmpdir_template[] = "./syzkaller.XXXXXX";
        			char* tmpdir = mkdtemp(tmpdir_template);
        			if (!tmpdir)
        			exit(1);
        			if (chmod(tmpdir, 0777))
        			exit(1);
        			if (chdir(tmpdir))
        			exit(1);
        		}
        		
        		static void remove_dir(const char* dir)
        		{
        			DIR* dp;
        			struct dirent* ep;
        			dp = opendir(dir);
        			if (dp == NULL)
        			exit(1);
        			while ((ep = readdir(dp))) {
        				if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
        					continue;
        				char filename[FILENAME_MAX];
        				snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
        				struct stat st;
        				if (lstat(filename, &st))
        			exit(1);
        				if (S_ISDIR(st.st_mode)) {
        					remove_dir(filename);
        					continue;
        				}
        				if (unlink(filename))
        			exit(1);
        			}
        			closedir(dp);
        			if (rmdir(dir))
        			exit(1);
        		}
        		
        		static void thread_start(void* (*fn)(void*), void* arg)
        		{
        			pthread_t th;
        			pthread_attr_t attr;
        			pthread_attr_init(&attr);
        			pthread_attr_setstacksize(&attr, 128 << 10);
        			int i;
        			for (i = 0; i < 100; i++) {
        				if (pthread_create(&th, &attr, fn, arg) == 0) {
        					pthread_attr_destroy(&attr);
        					return;
        				}
        				if (errno == EAGAIN) {
        					usleep(50);
        					continue;
        				}
        				break;
        			}
        			exit(1);
        		}
        		
        		typedef struct {
        			pthread_mutex_t mu;
        			pthread_cond_t cv;
        			int state;
        		} event_t;
        		
        		static void event_init(event_t* ev)
        		{
        			if (pthread_mutex_init(&ev->mu, 0))
        			exit(1);
        			if (pthread_cond_init(&ev->cv, 0))
        			exit(1);
        			ev->state = 0;
        		}
        		
        		static void event_reset(event_t* ev)
        		{
        			ev->state = 0;
        		}
        		
        		static void event_set(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			if (ev->state)
        			exit(1);
        			ev->state = 1;
        			pthread_mutex_unlock(&ev->mu);
        			pthread_cond_broadcast(&ev->cv);
        		}
        		
        		static void event_wait(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			while (!ev->state)
        				pthread_cond_wait(&ev->cv, &ev->mu);
        			pthread_mutex_unlock(&ev->mu);
        		}
        		
        		static int event_isset(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		static int event_timedwait(event_t* ev, uint64_t timeout)
        		{
        			uint64_t start = current_time_ms();
        			uint64_t now = start;
        			pthread_mutex_lock(&ev->mu);
        			for (;;) {
        				if (ev->state)
        					break;
        				uint64_t remain = timeout - (now - start);
        				struct timespec ts;
        				ts.tv_sec = remain / 1000;
        				ts.tv_nsec = (remain % 1000) * 1000 * 1000;
        				pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
        				now = current_time_ms();
        				if (now - start > timeout)
        					break;
        			}
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		/*
        		 * Redefinitions to match the linux types used in common_usb.h.
        		 */
        		
        		struct usb_endpoint_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bEndpointAddress;
        			uint8_t bmAttributes;
        			uint16_t wMaxPacketSize;
        			uint8_t bInterval;
        			uint8_t bRefresh;
        			uint8_t bSynchAddress;
        		} __attribute__((packed));
        		
        		struct usb_device_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint16_t idVendor;
        			uint16_t idProduct;
        			uint16_t bcdDevice;
        			uint8_t iManufacturer;
        			uint8_t iProduct;
        			uint8_t iSerialNumber;
        			uint8_t bNumConfigurations;
        		} __attribute__((packed));
        		
        		struct usb_config_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t wTotalLength;
        			uint8_t bNumInterfaces;
        			uint8_t bConfigurationValue;
        			uint8_t iConfiguration;
        			uint8_t bmAttributes;
        			uint8_t bMaxPower;
        		} __attribute__((packed));
        		
        		struct usb_interface_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bNumEndpoints;
        			uint8_t bInterfaceClass;
        			uint8_t bInterfaceSubClass;
        			uint8_t bInterfaceProtocol;
        			uint8_t iInterface;
        		} __attribute__((packed));
        		
        		struct usb_ctrlrequest {
        			uint8_t bRequestType;
        			uint8_t bRequest;
        			uint16_t wValue;
        			uint16_t wIndex;
        			uint16_t wLength;
        		} __attribute__((packed));
        		
        		struct usb_qualifier_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint8_t bNumConfigurations;
        			uint8_t bRESERVED;
        		} __attribute__((packed));
        		
        		#define USB_TYPE_MASK (0x03 << 5)
        		#define USB_TYPE_STANDARD (0x00 << 5)
        		#define USB_TYPE_CLASS (0x01 << 5)
        		#define USB_TYPE_VENDOR (0x02 << 5)
        		#define USB_TYPE_RESERVED (0x03 << 5)
        		
        		#define USB_DT_DEVICE 0x01
        		#define USB_DT_CONFIG 0x02
        		#define USB_DT_STRING 0x03
        		#define USB_DT_INTERFACE 0x04
        		#define USB_DT_ENDPOINT 0x05
        		#define USB_DT_DEVICE_QUALIFIER 0x06
        		#define USB_DT_OTHER_SPEED_CONFIG 0x07
        		#define USB_DT_INTERFACE_POWER 0x08
        		#define USB_DT_OTG 0x09
        		#define USB_DT_DEBUG 0x0a
        		#define USB_DT_INTERFACE_ASSOCIATION 0x0b
        		#define USB_DT_SECURITY 0x0c
        		#define USB_DT_KEY 0x0d
        		#define USB_DT_ENCRYPTION_TYPE 0x0e
        		#define USB_DT_BOS 0x0f
        		#define USB_DT_DEVICE_CAPABILITY 0x10
        		#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
        		#define USB_DT_WIRE_ADAPTER 0x21
        		#define USB_DT_RPIPE 0x22
        		#define USB_DT_CS_RADIO_CONTROL 0x23
        		#define USB_DT_PIPE_USAGE 0x24
        		#define USB_DT_SS_ENDPOINT_COMP 0x30
        		#define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31
        		
        		#define USB_REQ_GET_STATUS 0x00
        		#define USB_REQ_CLEAR_FEATURE 0x01
        		#define USB_REQ_SET_FEATURE 0x03
        		#define USB_REQ_SET_ADDRESS 0x05
        		#define USB_REQ_GET_DESCRIPTOR 0x06
        		#define USB_REQ_SET_DESCRIPTOR 0x07
        		#define USB_REQ_GET_CONFIGURATION 0x08
        		#define USB_REQ_SET_CONFIGURATION 0x09
        		#define USB_REQ_GET_INTERFACE 0x0A
        		#define USB_REQ_SET_INTERFACE 0x0B
        		#define USB_REQ_SYNCH_FRAME 0x0C
        		#define USB_REQ_SET_SEL 0x30
        		#define USB_REQ_SET_ISOCH_DELAY 0x31
        		
        		#define USB_REQ_SET_ENCRYPTION 0x0D
        		#define USB_REQ_GET_ENCRYPTION 0x0E
        		#define USB_REQ_RPIPE_ABORT 0x0E
        		#define USB_REQ_SET_HANDSHAKE 0x0F
        		#define USB_REQ_RPIPE_RESET 0x0F
        		#define USB_REQ_GET_HANDSHAKE 0x10
        		#define USB_REQ_SET_CONNECTION 0x11
        		#define USB_REQ_SET_SECURITY_DATA 0x12
        		#define USB_REQ_GET_SECURITY_DATA 0x13
        		#define USB_REQ_SET_WUSB_DATA 0x14
        		#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
        		#define USB_REQ_LOOPBACK_DATA_READ 0x16
        		#define USB_REQ_SET_INTERFACE_DS 0x17
        		
        		#define USB_REQ_GET_PARTNER_PDO 20
        		#define USB_REQ_GET_BATTERY_STATUS 21
        		#define USB_REQ_SET_PDO 22
        		#define USB_REQ_GET_VDM 23
        		#define USB_REQ_SEND_VDM 24
        		
        		#define USB_MAX_IFACE_NUM 4
        		#define USB_MAX_EP_NUM 32
        		#define USB_MAX_FDS 6
        		
        		struct usb_endpoint_index {
        			struct usb_endpoint_descriptor desc;
        			int handle;
        		};
        		
        		struct usb_iface_index {
        			struct usb_interface_descriptor* iface;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bInterfaceClass;
        			struct usb_endpoint_index eps[USB_MAX_EP_NUM];
        			int eps_num;
        		};
        		
        		struct usb_device_index {
        			struct usb_device_descriptor* dev;
        			struct usb_config_descriptor* config;
        			uint8_t bDeviceClass;
        			uint8_t bMaxPower;
        			int config_length;
        			struct usb_iface_index ifaces[USB_MAX_IFACE_NUM];
        			int ifaces_num;
        			int iface_cur;
        		};
        		
        		struct usb_info {
        			int fd;
        			struct usb_device_index index;
        		};
        		
        		static struct usb_info usb_devices[USB_MAX_FDS];
        		static int usb_devices_num;
        		
        		static bool parse_usb_descriptor(const char* buffer, size_t length, struct usb_device_index* index)
        		{
        			if (length < sizeof(*index->dev) + sizeof(*index->config))
        				return false;
        			memset(index, 0, sizeof(*index));
        			index->dev = (struct usb_device_descriptor*)buffer;
        			index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev));
        			index->bDeviceClass = index->dev->bDeviceClass;
        			index->bMaxPower = index->config->bMaxPower;
        			index->config_length = length - sizeof(*index->dev);
        			index->iface_cur = -1;
        			size_t offset = 0;
        			while (true) {
        				if (offset + 1 >= length)
        					break;
        				uint8_t desc_length = buffer[offset];
        				uint8_t desc_type = buffer[offset + 1];
        				if (desc_length <= 2)
        					break;
        				if (offset + desc_length > length)
        					break;
        				if (desc_type == USB_DT_INTERFACE && index->ifaces_num < USB_MAX_IFACE_NUM) {
        					struct usb_interface_descriptor* iface = (struct usb_interface_descriptor*)(buffer + offset);
        					index->ifaces[index->ifaces_num].iface = iface;
        					index->ifaces[index->ifaces_num].bInterfaceNumber = iface->bInterfaceNumber;
        					index->ifaces[index->ifaces_num].bAlternateSetting = iface->bAlternateSetting;
        					index->ifaces[index->ifaces_num].bInterfaceClass = iface->bInterfaceClass;
        					index->ifaces_num++;
        				}
        				if (desc_type == USB_DT_ENDPOINT && index->ifaces_num > 0) {
        					struct usb_iface_index* iface = &index->ifaces[index->ifaces_num - 1];
        					if (iface->eps_num < USB_MAX_EP_NUM) {
        						memcpy(&iface->eps[iface->eps_num].desc, buffer + offset, sizeof(iface->eps[iface->eps_num].desc));
        						iface->eps_num++;
        					}
        				}
        				offset += desc_length;
        			}
        			return true;
        		}
        		
        		static struct usb_device_index* add_usb_index(int fd, const char* dev, size_t dev_len)
        		{
        			int i = __atomic_fetch_add(&usb_devices_num, 1, __ATOMIC_RELAXED);
        			if (i >= USB_MAX_FDS)
        				return NULL;
        			int rv = 0;
        		rv = parse_usb_descriptor(dev, dev_len, &usb_devices[i].index);
        			if (!rv)
        				return NULL;
        			__atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE);
        			return &usb_devices[i].index;
        		}
        		
        		static struct usb_device_index* lookup_usb_index(int fd)
        		{
        			int i;
        			for (i = 0; i < USB_MAX_FDS; i++) {
        				if (__atomic_load_n(&usb_devices[i].fd, __ATOMIC_ACQUIRE) == fd) {
        					return &usb_devices[i].index;
        				}
        			}
        			return NULL;
        		}
        		
        		struct vusb_connect_string_descriptor {
        			uint32_t len;
        			char* str;
        		} __attribute__((packed));
        		
        		struct vusb_connect_descriptors {
        			uint32_t qual_len;
        			char* qual;
        			uint32_t bos_len;
        			char* bos;
        			uint32_t strs_len;
        			struct vusb_connect_string_descriptor strs[0];
        		} __attribute__((packed));
        		
        		static const char default_string[] = {
        		    8, USB_DT_STRING,
        		    's', 0, 'y', 0, 'z', 0
        		};
        		
        		static const char default_lang_id[] = {
        		    4, USB_DT_STRING,
        		    0x09, 0x04
        		};
        		
        		static bool lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs,
        						       const struct usb_ctrlrequest* ctrl,
        						       char** response_data, uint32_t* response_length)
        		{
        			struct usb_device_index* index = lookup_usb_index(fd);
        			uint8_t str_idx;
        			if (!index)
        				return false;
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_GET_DESCRIPTOR:
        					switch (ctrl->wValue >> 8) {
        					case USB_DT_DEVICE:
        						*response_data = (char*)index->dev;
        						*response_length = sizeof(*index->dev);
        						return true;
        					case USB_DT_CONFIG:
        						*response_data = (char*)index->config;
        						*response_length = index->config_length;
        						return true;
        					case USB_DT_STRING:
        						str_idx = (uint8_t)ctrl->wValue;
        						if (descs && str_idx < descs->strs_len) {
        							*response_data = descs->strs[str_idx].str;
        							*response_length = descs->strs[str_idx].len;
        							return true;
        						}
        						if (str_idx == 0) {
        							*response_data = (char*)&default_lang_id[0];
        							*response_length = default_lang_id[0];
        							return true;
        						}
        						*response_data = (char*)&default_string[0];
        						*response_length = default_string[0];
        						return true;
        					case USB_DT_BOS:
        						*response_data = descs->bos;
        						*response_length = descs->bos_len;
        						return true;
        					case USB_DT_DEVICE_QUALIFIER:
        						if (!descs->qual) {
        							struct usb_qualifier_descriptor* qual =
        							    (struct usb_qualifier_descriptor*)response_data;
        							qual->bLength = sizeof(*qual);
        							qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
        							qual->bcdUSB = index->dev->bcdUSB;
        							qual->bDeviceClass = index->dev->bDeviceClass;
        							qual->bDeviceSubClass = index->dev->bDeviceSubClass;
        							qual->bDeviceProtocol = index->dev->bDeviceProtocol;
        							qual->bMaxPacketSize0 = index->dev->bMaxPacketSize0;
        							qual->bNumConfigurations = index->dev->bNumConfigurations;
        							qual->bRESERVED = 0;
        							*response_length = sizeof(*qual);
        							return true;
        						}
        						*response_data = descs->qual;
        						*response_length = descs->qual_len;
        						return true;
        					default:
        						break;
        					}
        					break;
        				default:
        					break;
        				}
        				break;
        			default:
        				break;
        			}
        			return false;
        		}
        		
        		typedef bool (*lookup_connect_out_response_t)(int fd, const struct vusb_connect_descriptors* descs,
        							      const struct usb_ctrlrequest* ctrl, bool* done);
        		
        		static bool lookup_connect_response_out_generic(int fd, const struct vusb_connect_descriptors* descs,
        								const struct usb_ctrlrequest* ctrl, bool* done)
        		{
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_SET_CONFIGURATION:
        					*done = true;
        					return true;
        				default:
        					break;
        				}
        				break;
        			}
        			return false;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static int vhci_open(void)
        		{
        			return open("/dev/vhci", O_RDWR);
        		}
        		
        		static int vhci_setport(int fd, u_int port)
        		{
        			struct vhci_ioc_set_port args;
        			args.port = port;
        			return ioctl(fd, VHCI_IOC_SET_PORT, &args);
        		}
        		
        		static int vhci_usb_attach(int fd)
        		{
        			return ioctl(fd, VHCI_IOC_USB_ATTACH, NULL);
        		}
        		
        		static int vhci_usb_recv(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = read(fd, ptr, size);
        				if (done < 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		static int vhci_usb_send(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = write(fd, ptr, size);
        				if (done <= 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static volatile long syz_usb_connect_impl(uint64_t speed, uint64_t dev_len,
        							  const char* dev, const struct vusb_connect_descriptors* descs,
        							  lookup_connect_out_response_t lookup_connect_response_out)
        		{
        			struct usb_device_index* index;
        			int portnum, fd, rv;
        			bool done;
        			portnum = procid + 1;
        			if (!dev) {
        				return -1;
        			}
        			if (portnum != 1) {
        				/* For now, we support only one proc. */
        				return -1;
        			}
        			fd = vhci_open();
        			if (fd < 0) {
        				return -1;
        			}
        			index = add_usb_index(fd, dev, dev_len);
        			if (!index) {
        				goto err;
        			}
        			rv = vhci_setport(fd, portnum);
        			if (rv != 0) {
        				goto err;
        			}
        			rv = vhci_usb_attach(fd);
        			if (rv != 0) {
        				goto err;
        			}
        			done = false;
        			while (!done) {
        				vhci_request_t req;
        				rv = vhci_usb_recv(fd, &req, sizeof(req));
        				if (rv != 0) {
        					goto err;
        				}
        				if (req.type != VHCI_REQ_CTRL) {
        					goto err;
        				}
        				char* response_data = NULL;
        				uint32_t response_length = 0;
        				char data[4096];
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					bool response_found = false;
        		response_found = lookup_connect_response_in(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &response_data, &response_length);
        					if (!response_found) {
        						goto err;
        					}
        				} else {
        					if (!lookup_connect_response_out(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &done)) {
        						goto err;
        					}
        					response_data = NULL;
        					response_length = UGETW(req.u.ctrl.wLength);
        				}
        				if ((req.u.ctrl.bmRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        				    req.u.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
        					/* TODO: possibly revisit */
        				}
        				if (response_length > sizeof(data))
        					response_length = 0;
        				if ((uint32_t)UGETW(req.u.ctrl.wLength) < response_length)
        					response_length = UGETW(req.u.ctrl.wLength);
        				if (response_data)
        					memcpy(data, response_data, response_length);
        				else
        					memset(data, 0, response_length);
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					if (response_length > 0) {
        						vhci_response_t res;
        						res.size = response_length;
        						rv = vhci_usb_send(fd, &res, sizeof(res));
        						if (rv == 0)
        							rv = vhci_usb_send(fd, data, response_length);
        					}
        				} else {
        					rv = vhci_usb_recv(fd, data, response_length);
        				}
        				if (rv < 0) {
        					goto err;
        				}
        			}
        			sleep_ms(200);
        			return fd;
        		
        		err:
        			close(fd);
        			return -1;
        		}
        		
        		static volatile long syz_usb_connect(volatile long a0, volatile long a1,
        						     volatile long a2, volatile long a3)
        		{
        			uint64_t speed = a0;
        			uint64_t dev_len = a1;
        			const char* dev = (const char*)a2;
        			const struct vusb_connect_descriptors* descs = (const struct vusb_connect_descriptors*)a3;
        			return syz_usb_connect_impl(speed, dev_len, dev, descs,
        						    &lookup_connect_response_out_generic);
        		}
        		
        		static volatile long syz_usb_disconnect(volatile long a0)
        		{
        			int fd = a0;
        			int rv = close(fd);
        			sleep_ms(200);
        			return rv;
        		}
        		
        		static void sandbox_common()
        		{
        			if (setsid() == -1)
        			exit(1);
        			struct rlimit rlim;
        			rlim.rlim_cur = rlim.rlim_max = 8 << 20;
        			setrlimit(RLIMIT_MEMLOCK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_FSIZE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_STACK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 0;
        			setrlimit(RLIMIT_CORE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 256;
        			setrlimit(RLIMIT_NOFILE, &rlim);
        		}
        		
        		static void loop();
        		
        		static int do_sandbox_none(void)
        		{
        			sandbox_common();
        			loop();
        			return 0;
        		}
        		
        		static long syz_execute_func(volatile long text)
        		{
        			volatile long p[8] = {0};
        			(void)p;
        			asm volatile("" ::"r"(0l), "r"(1l), "r"(2l), "r"(3l), "r"(4l), "r"(5l), "r"(6l),
        				     "r"(7l), "r"(8l), "r"(9l), "r"(10l), "r"(11l), "r"(12l), "r"(13l));
        		((void (*)(void))(text))();
        			return 0;
        		}
        		
        		struct thread_t {
        			int created, call;
        			event_t ready, done;
        		};
        		
        		static struct thread_t threads[16];
        		static void execute_call(int call);
        		static int running;
        		
        		static void* thr(void* arg)
        		{
        			struct thread_t* th = (struct thread_t*)arg;
        			for (;;) {
        				event_wait(&th->ready);
        				event_reset(&th->ready);
        				execute_call(th->call);
        				__atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
        				event_set(&th->done);
        			}
        			return 0;
        		}
        		
        		static void execute_one(void)
        		{
        			if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
        			}
        			int i, call, thread;
        			int collide = 0;
        		again:
        			for (call = 0; call < 15; call++) {
        				for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) {
        					struct thread_t* th = &threads[thread];
        					if (!th->created) {
        						th->created = 1;
        						event_init(&th->ready);
        						event_init(&th->done);
        						event_set(&th->done);
        						thread_start(thr, th);
        					}
        					if (!event_isset(&th->done))
        						continue;
        					event_reset(&th->done);
        					th->call = call;
        					__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        					event_set(&th->ready);
        					if (collide && (call % 2) == 0)
        						break;
        					event_timedwait(&th->done, 45 + (call == 13 ? 3000 : 0) + (call == 14 ? 300 : 0));
        					break;
        				}
        			}
        			for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
        				sleep_ms(1);
        			if (!collide) {
        				collide = 1;
        				goto again;
        			}
        		}
        		
        		static void execute_one(void);
        		
        		#define WAIT_FLAGS 0
        		
        		static void loop(void)
        		{
        			int iter;
        			for (iter = 0;; iter++) {
        				char cwdbuf[32];
        				sprintf(cwdbuf, "./%d", iter);
        				if (mkdir(cwdbuf, 0777))
        			exit(1);
        				int pid = fork();
        				if (pid < 0)
        			exit(1);
        				if (pid == 0) {
        					if (chdir(cwdbuf))
        			exit(1);
        					execute_one();
        					exit(0);
        				}
        				int status = 0;
        				uint64_t start = current_time_ms();
        				for (;;) {
        					if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        						break;
        					sleep_ms(1);
        					if (current_time_ms() - start < 5 * 1000)
        						continue;
        					kill_and_wait(pid, &status);
        					break;
        				}
        				remove_dir(cwdbuf);
        			}
        		}
        		
        		#ifndef SYS_access
        		#define SYS_access 33
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_lseek
        		#define SYS_lseek 199
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_shmctl
        		#define SYS_shmctl 443
        		#endif
        		#ifndef SYS_shmget
        		#define SYS_shmget 231
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_socketpair
        		#define SYS_socketpair 135
        		#endif
        		
        		uint64_t r[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_socketpair, 1ul, 1ul, 0, 0x20000000ul);
        				if (res != -1) {
        		r[0] = *(uint32_t*)0x20000000;
        		r[1] = *(uint32_t*)0x20000004;
        				}
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = 8;
        				syscall(SYS_getpeername, r[1], 0x20000040ul, 0x20000080ul);
        				break;
        			case 2:
        				syscall(SYS_lseek, r[0], 5ul, 1ul);
        				break;
        			case 3:
        		memcpy((void*)0x200000c0, "./file0\000", 8);
        				syscall(SYS_access, 0x200000c0ul, 2ul);
        				break;
        			case 4:
        				res = syscall(SYS_socket, 1ul, 1ul, 0);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 5:
        		*(uint64_t*)0x200014c0 = 0x20000100;
        		*(uint32_t*)0x200014c8 = 0xc;
        		*(uint64_t*)0x200014d0 = 0x20001340;
        		*(uint64_t*)0x20001340 = 0x20000140;
        		*(uint64_t*)0x20001348 = 0x4d;
        		*(uint64_t*)0x20001350 = 0x200001c0;
        		*(uint64_t*)0x20001358 = 0x8d;
        		*(uint64_t*)0x20001360 = 0x20000280;
        		*(uint64_t*)0x20001368 = 0x25;
        		*(uint64_t*)0x20001370 = 0x200002c0;
        		*(uint64_t*)0x20001378 = 0x1000;
        		*(uint64_t*)0x20001380 = 0x200012c0;
        		*(uint64_t*)0x20001388 = 0x5f;
        		*(uint64_t*)0x200014d8 = 5;
        		*(uint64_t*)0x200014e0 = 0x200013c0;
        		*(uint64_t*)0x200014e8 = 0xd8;
        		*(uint32_t*)0x200014f0 = 0;
        				syscall(SYS_recvmsg, r[2], 0x200014c0ul, 0x40ul);
        				break;
        			case 6:
        				res = syscall(SYS_shmget, 0x798dd814ul + procid*4, 0x3000ul, 0x60ul, 0x20ffc000ul);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 7:
        				syscall(SYS_shmctl, r[3], 4ul, 0);
        				break;
        			case 8:
        				res = syscall(SYS_socket, 0x18ul, 5ul, 0x3e);
        				if (res != -1)
        						r[4] = res;
        				break;
        			case 9:
        				syscall(SYS_mmap, 0x20ffd000ul, 0x2000ul, 1ul, 0x210ul, r[4], 0ul, 0x100000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\x5e\xca\xd8\xbb\x62\x7a\x3a\x76\x50\x4a\xd2\xe0\x3a\x19\x6c\x8c\x75\xbb\xf9\x78\xbb\xa9\x8c\x2d\xf5\xe2\x6a\x5d\x25\xf8\x4e\x08\x3d\xe8\xf2\x7b\x7f\xfe\xda\x58\x1b\x9a\xdc\x9a\xae\xeb\x97\xdb\x43\x38\x22\xdb\xbb\xf3\xa9\x00\x27\x38\x4a\xbb\x2e\x61\x43\x27\xb7\xdd\xd4\xbc\xbb\x87\x04\xd5\x75\x56\x3b\x2e\xcc\x9b\x13\xeb\xcc\x1d\x5f\x0a\xd4\xfd\x25\x0a\x79\xa3\x98\x3b\x54\x05\xaa\xe0\x36\x55\x03\x0e\x16\x0b\x22\xa6\x61\xf0\x1c\xab\xaa\xf0\xfe\x28\xfd\xed\x43\xed\xee\xea\xba\x8e\x29\xe7\xa5\x5e\xd1\x60", 126);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\x41\xb3\x7d\x67\x16\xc4\xc1\x19\x5d\x3c\xc4\x63\xa6\xf6\xb3\x86\x5f\x64\x64\x40\x0f\x91\xfc\xc4\x02\xb5\x8e\x45\x0c\xd3\x10\xfa\xf2\x0f\x2b\x31\xc4\xc1\xed\xdd\x69\x0b\xc4\xc2\x0d\x0c\xd1", 48);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000100, "\x00\x30\x4f\xf9\x82\x3a\x61\x45\xaf\xcf\xab\xe5\x9e\x7b\x44\x8a\xf5\x19\x13\x09\x95\x66\xd6\xb4\x99\x44\x63\xd5\x2f\xf7\x0c\x87\xd9\x5b\xd6\x58\xf3\x13\xdd\x8f\x6e\xf2\xae\x26\xb1\x30\xa2\x96\xec\x42\x60\x64\xb7\x96\x66\x1a\x0a", 57);
        		memcpy((void*)0x20000140, "\x8e\xb1\x2c\x0b\x12\xb9\xe8\x10\x70\x0f\x13\xd7\x30\x40\x08\x7e\x8a\x51\xc0\xe0\x50\x46\x23\xd6\x84\x34\x51\xcc\xdf\xfc\xe9", 31);
        				res = syz_usb_connect(0x374, 0x39, 0x20000100, 0x20000140);
        				if (res != -1)
        						r[5] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[5]);
        				break;
        			}
        		
        		}
        		int main(void)
        		{
        				syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul);
        			for (procid = 0; procid < 2; procid++) {
        				if (fork() == 0) {
        					use_temporary_dir();
        					do_sandbox_none();
        				}
        			}
        			sleep(1000000);
        			return 0;
        		}
        		
        		<stdin>: In function 'syz_usb_connect_impl':
        		<stdin>:637:63: error: unknown type name 'usb_ctrlrequest'
        		<stdin>:642:55: error: unknown type name 'usb_ctrlrequest'
        		
        		compiler invocation: /syzkaller/netbsd/src/../tools/bin/x86_64--netbsd-g++ [-o /tmp/syz-executor587395408 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/2 (0.18s)
        	csource_test.go:123: opts: {Threaded:true Collide:true Repeat:true RepeatTimes:0 Procs:0 Sandbox:none Fault:false FaultCall:0 FaultNth:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false UseTmpDir:true HandleSegv:false Repro:false Trace:false}
        		program:
        		socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
        		getpeername$unix(r1, &(0x7f0000000040)=@abs, &(0x7f0000000080)=0x8)
        		lseek(r0, 0x5, 0x1)
        		access(&(0x7f00000000c0)='./file0\x00', 0x2)
        		r2 = socket$unix(0x1, 0x1, 0x0)
        		recvmsg(r2, &(0x7f00000014c0)={&(0x7f0000000100)=@in6, 0xc, &(0x7f0000001340)=[{&(0x7f0000000140)=""/77, 0x4d}, {&(0x7f00000001c0)=""/141, 0x8d}, {&(0x7f0000000280)=""/37, 0x25}, {&(0x7f00000002c0)=""/4096, 0x1000}, {&(0x7f00000012c0)=""/95, 0x5f}], 0x5, &(0x7f00000013c0)=""/216, 0xd8}, 0x40)
        		r3 = shmget(0x1, 0x3000, 0x60, &(0x7f0000ffc000/0x3000)=nil)
        		shmctl$SHM_UNLOCK(r3, 0x4)
        		r4 = socket$inet6(0x18, 0x5, 0x3e)
        		mmap(&(0x7f0000ffd000/0x2000)=nil, 0x2000, 0x1, 0x210, r4, 0x0, 0x100000000)
        		syz_emit_ethernet(0x7e, &(0x7f0000000000)="5ecad8bb627a3a76504ad2e03a196c8c75bbf978bba98c2df5e26a5d25f84e083de8f27b7ffeda581b9adc9aaeeb97db433822dbbbf3a90027384abb2e614327b7ddd4bcbb8704d575563b2ecc9b13ebcc1d5f0ad4fd250a79a3983b5405aae03655030e160b22a661f01cabaaf0fe28fded43edeeeaba8e29e7a55ed160")
        		syz_execute_func(&(0x7f0000000080)="c441b37d6716c4c1195d3cc463a6f6b3865f6464400f91fcc402b58e450cd310faf20f2b31c4c1eddd690bc4c20d0cd1")
        		syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x2)
        		r5 = syz_usb_connect(0x374, 0x39, &(0x7f0000000100)="00304ff9823a6145afcfabe59e7b448af51913099566d6b4994463d52ff70c87d95bd658f313dd8f6ef2ae26b130a296ec426064b796661a0a", &(0x7f0000000140)="8eb12c0b12b9e810700f13d73040087e8a51c0e0504623d6843451ccdffce9")
        		syz_usb_disconnect(r5)
        		
        	csource_test.go:124: failed to build program:
        		// autogenerated by syzkaller (https://github.com/google/syzkaller)
        		
        		#define _GNU_SOURCE 
        		
        		#include <dev/usb/usb.h>
        		#include <dev/usb/usbhid.h>
        		#include <dev/usb/vhci.h>
        		#include <dirent.h>
        		#include <endian.h>
        		#include <errno.h>
        		#include <fcntl.h>
        		#include <pthread.h>
        		#include <pwd.h>
        		#include <signal.h>
        		#include <stdarg.h>
        		#include <stdbool.h>
        		#include <stdint.h>
        		#include <stdio.h>
        		#include <stdlib.h>
        		#include <string.h>
        		#include <sys/ioctl.h>
        		#include <sys/resource.h>
        		#include <sys/stat.h>
        		#include <sys/syscall.h>
        		#include <sys/types.h>
        		#include <sys/wait.h>
        		#include <time.h>
        		#include <unistd.h>
        		
        		static unsigned long long procid;
        		
        		static void kill_and_wait(int pid, int* status)
        		{
        			kill(pid, SIGKILL);
        			while (waitpid(-1, status, 0) != pid) {
        			}
        		}
        		
        		static void sleep_ms(uint64_t ms)
        		{
        			usleep(ms * 1000);
        		}
        		
        		static uint64_t current_time_ms(void)
        		{
        			struct timespec ts;
        			if (clock_gettime(CLOCK_MONOTONIC, &ts))
        			exit(1);
        			return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
        		}
        		
        		static void use_temporary_dir(void)
        		{
        			char tmpdir_template[] = "./syzkaller.XXXXXX";
        			char* tmpdir = mkdtemp(tmpdir_template);
        			if (!tmpdir)
        			exit(1);
        			if (chmod(tmpdir, 0777))
        			exit(1);
        			if (chdir(tmpdir))
        			exit(1);
        		}
        		
        		static void remove_dir(const char* dir)
        		{
        			DIR* dp;
        			struct dirent* ep;
        			dp = opendir(dir);
        			if (dp == NULL)
        			exit(1);
        			while ((ep = readdir(dp))) {
        				if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
        					continue;
        				char filename[FILENAME_MAX];
        				snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
        				struct stat st;
        				if (lstat(filename, &st))
        			exit(1);
        				if (S_ISDIR(st.st_mode)) {
        					remove_dir(filename);
        					continue;
        				}
        				if (unlink(filename))
        			exit(1);
        			}
        			closedir(dp);
        			if (rmdir(dir))
        			exit(1);
        		}
        		
        		static void thread_start(void* (*fn)(void*), void* arg)
        		{
        			pthread_t th;
        			pthread_attr_t attr;
        			pthread_attr_init(&attr);
        			pthread_attr_setstacksize(&attr, 128 << 10);
        			int i;
        			for (i = 0; i < 100; i++) {
        				if (pthread_create(&th, &attr, fn, arg) == 0) {
        					pthread_attr_destroy(&attr);
        					return;
        				}
        				if (errno == EAGAIN) {
        					usleep(50);
        					continue;
        				}
        				break;
        			}
        			exit(1);
        		}
        		
        		typedef struct {
        			pthread_mutex_t mu;
        			pthread_cond_t cv;
        			int state;
        		} event_t;
        		
        		static void event_init(event_t* ev)
        		{
        			if (pthread_mutex_init(&ev->mu, 0))
        			exit(1);
        			if (pthread_cond_init(&ev->cv, 0))
        			exit(1);
        			ev->state = 0;
        		}
        		
        		static void event_reset(event_t* ev)
        		{
        			ev->state = 0;
        		}
        		
        		static void event_set(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			if (ev->state)
        			exit(1);
        			ev->state = 1;
        			pthread_mutex_unlock(&ev->mu);
        			pthread_cond_broadcast(&ev->cv);
        		}
        		
        		static void event_wait(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			while (!ev->state)
        				pthread_cond_wait(&ev->cv, &ev->mu);
        			pthread_mutex_unlock(&ev->mu);
        		}
        		
        		static int event_isset(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		static int event_timedwait(event_t* ev, uint64_t timeout)
        		{
        			uint64_t start = current_time_ms();
        			uint64_t now = start;
        			pthread_mutex_lock(&ev->mu);
        			for (;;) {
        				if (ev->state)
        					break;
        				uint64_t remain = timeout - (now - start);
        				struct timespec ts;
        				ts.tv_sec = remain / 1000;
        				ts.tv_nsec = (remain % 1000) * 1000 * 1000;
        				pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
        				now = current_time_ms();
        				if (now - start > timeout)
        					break;
        			}
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		/*
        		 * Redefinitions to match the linux types used in common_usb.h.
        		 */
        		
        		struct usb_endpoint_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bEndpointAddress;
        			uint8_t bmAttributes;
        			uint16_t wMaxPacketSize;
        			uint8_t bInterval;
        			uint8_t bRefresh;
        			uint8_t bSynchAddress;
        		} __attribute__((packed));
        		
        		struct usb_device_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint16_t idVendor;
        			uint16_t idProduct;
        			uint16_t bcdDevice;
        			uint8_t iManufacturer;
        			uint8_t iProduct;
        			uint8_t iSerialNumber;
        			uint8_t bNumConfigurations;
        		} __attribute__((packed));
        		
        		struct usb_config_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t wTotalLength;
        			uint8_t bNumInterfaces;
        			uint8_t bConfigurationValue;
        			uint8_t iConfiguration;
        			uint8_t bmAttributes;
        			uint8_t bMaxPower;
        		} __attribute__((packed));
        		
        		struct usb_interface_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bNumEndpoints;
        			uint8_t bInterfaceClass;
        			uint8_t bInterfaceSubClass;
        			uint8_t bInterfaceProtocol;
        			uint8_t iInterface;
        		} __attribute__((packed));
        		
        		struct usb_ctrlrequest {
        			uint8_t bRequestType;
        			uint8_t bRequest;
        			uint16_t wValue;
        			uint16_t wIndex;
        			uint16_t wLength;
        		} __attribute__((packed));
        		
        		struct usb_qualifier_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint8_t bNumConfigurations;
        			uint8_t bRESERVED;
        		} __attribute__((packed));
        		
        		#define USB_TYPE_MASK (0x03 << 5)
        		#define USB_TYPE_STANDARD (0x00 << 5)
        		#define USB_TYPE_CLASS (0x01 << 5)
        		#define USB_TYPE_VENDOR (0x02 << 5)
        		#define USB_TYPE_RESERVED (0x03 << 5)
        		
        		#define USB_DT_DEVICE 0x01
        		#define USB_DT_CONFIG 0x02
        		#define USB_DT_STRING 0x03
        		#define USB_DT_INTERFACE 0x04
        		#define USB_DT_ENDPOINT 0x05
        		#define USB_DT_DEVICE_QUALIFIER 0x06
        		#define USB_DT_OTHER_SPEED_CONFIG 0x07
        		#define USB_DT_INTERFACE_POWER 0x08
        		#define USB_DT_OTG 0x09
        		#define USB_DT_DEBUG 0x0a
        		#define USB_DT_INTERFACE_ASSOCIATION 0x0b
        		#define USB_DT_SECURITY 0x0c
        		#define USB_DT_KEY 0x0d
        		#define USB_DT_ENCRYPTION_TYPE 0x0e
        		#define USB_DT_BOS 0x0f
        		#define USB_DT_DEVICE_CAPABILITY 0x10
        		#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
        		#define USB_DT_WIRE_ADAPTER 0x21
        		#define USB_DT_RPIPE 0x22
        		#define USB_DT_CS_RADIO_CONTROL 0x23
        		#define USB_DT_PIPE_USAGE 0x24
        		#define USB_DT_SS_ENDPOINT_COMP 0x30
        		#define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31
        		
        		#define USB_REQ_GET_STATUS 0x00
        		#define USB_REQ_CLEAR_FEATURE 0x01
        		#define USB_REQ_SET_FEATURE 0x03
        		#define USB_REQ_SET_ADDRESS 0x05
        		#define USB_REQ_GET_DESCRIPTOR 0x06
        		#define USB_REQ_SET_DESCRIPTOR 0x07
        		#define USB_REQ_GET_CONFIGURATION 0x08
        		#define USB_REQ_SET_CONFIGURATION 0x09
        		#define USB_REQ_GET_INTERFACE 0x0A
        		#define USB_REQ_SET_INTERFACE 0x0B
        		#define USB_REQ_SYNCH_FRAME 0x0C
        		#define USB_REQ_SET_SEL 0x30
        		#define USB_REQ_SET_ISOCH_DELAY 0x31
        		
        		#define USB_REQ_SET_ENCRYPTION 0x0D
        		#define USB_REQ_GET_ENCRYPTION 0x0E
        		#define USB_REQ_RPIPE_ABORT 0x0E
        		#define USB_REQ_SET_HANDSHAKE 0x0F
        		#define USB_REQ_RPIPE_RESET 0x0F
        		#define USB_REQ_GET_HANDSHAKE 0x10
        		#define USB_REQ_SET_CONNECTION 0x11
        		#define USB_REQ_SET_SECURITY_DATA 0x12
        		#define USB_REQ_GET_SECURITY_DATA 0x13
        		#define USB_REQ_SET_WUSB_DATA 0x14
        		#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
        		#define USB_REQ_LOOPBACK_DATA_READ 0x16
        		#define USB_REQ_SET_INTERFACE_DS 0x17
        		
        		#define USB_REQ_GET_PARTNER_PDO 20
        		#define USB_REQ_GET_BATTERY_STATUS 21
        		#define USB_REQ_SET_PDO 22
        		#define USB_REQ_GET_VDM 23
        		#define USB_REQ_SEND_VDM 24
        		
        		#define USB_MAX_IFACE_NUM 4
        		#define USB_MAX_EP_NUM 32
        		#define USB_MAX_FDS 6
        		
        		struct usb_endpoint_index {
        			struct usb_endpoint_descriptor desc;
        			int handle;
        		};
        		
        		struct usb_iface_index {
        			struct usb_interface_descriptor* iface;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bInterfaceClass;
        			struct usb_endpoint_index eps[USB_MAX_EP_NUM];
        			int eps_num;
        		};
        		
        		struct usb_device_index {
        			struct usb_device_descriptor* dev;
        			struct usb_config_descriptor* config;
        			uint8_t bDeviceClass;
        			uint8_t bMaxPower;
        			int config_length;
        			struct usb_iface_index ifaces[USB_MAX_IFACE_NUM];
        			int ifaces_num;
        			int iface_cur;
        		};
        		
        		struct usb_info {
        			int fd;
        			struct usb_device_index index;
        		};
        		
        		static struct usb_info usb_devices[USB_MAX_FDS];
        		static int usb_devices_num;
        		
        		static bool parse_usb_descriptor(const char* buffer, size_t length, struct usb_device_index* index)
        		{
        			if (length < sizeof(*index->dev) + sizeof(*index->config))
        				return false;
        			memset(index, 0, sizeof(*index));
        			index->dev = (struct usb_device_descriptor*)buffer;
        			index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev));
        			index->bDeviceClass = index->dev->bDeviceClass;
        			index->bMaxPower = index->config->bMaxPower;
        			index->config_length = length - sizeof(*index->dev);
        			index->iface_cur = -1;
        			size_t offset = 0;
        			while (true) {
        				if (offset + 1 >= length)
        					break;
        				uint8_t desc_length = buffer[offset];
        				uint8_t desc_type = buffer[offset + 1];
        				if (desc_length <= 2)
        					break;
        				if (offset + desc_length > length)
        					break;
        				if (desc_type == USB_DT_INTERFACE && index->ifaces_num < USB_MAX_IFACE_NUM) {
        					struct usb_interface_descriptor* iface = (struct usb_interface_descriptor*)(buffer + offset);
        					index->ifaces[index->ifaces_num].iface = iface;
        					index->ifaces[index->ifaces_num].bInterfaceNumber = iface->bInterfaceNumber;
        					index->ifaces[index->ifaces_num].bAlternateSetting = iface->bAlternateSetting;
        					index->ifaces[index->ifaces_num].bInterfaceClass = iface->bInterfaceClass;
        					index->ifaces_num++;
        				}
        				if (desc_type == USB_DT_ENDPOINT && index->ifaces_num > 0) {
        					struct usb_iface_index* iface = &index->ifaces[index->ifaces_num - 1];
        					if (iface->eps_num < USB_MAX_EP_NUM) {
        						memcpy(&iface->eps[iface->eps_num].desc, buffer + offset, sizeof(iface->eps[iface->eps_num].desc));
        						iface->eps_num++;
        					}
        				}
        				offset += desc_length;
        			}
        			return true;
        		}
        		
        		static struct usb_device_index* add_usb_index(int fd, const char* dev, size_t dev_len)
        		{
        			int i = __atomic_fetch_add(&usb_devices_num, 1, __ATOMIC_RELAXED);
        			if (i >= USB_MAX_FDS)
        				return NULL;
        			int rv = 0;
        		rv = parse_usb_descriptor(dev, dev_len, &usb_devices[i].index);
        			if (!rv)
        				return NULL;
        			__atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE);
        			return &usb_devices[i].index;
        		}
        		
        		static struct usb_device_index* lookup_usb_index(int fd)
        		{
        			int i;
        			for (i = 0; i < USB_MAX_FDS; i++) {
        				if (__atomic_load_n(&usb_devices[i].fd, __ATOMIC_ACQUIRE) == fd) {
        					return &usb_devices[i].index;
        				}
        			}
        			return NULL;
        		}
        		
        		struct vusb_connect_string_descriptor {
        			uint32_t len;
        			char* str;
        		} __attribute__((packed));
        		
        		struct vusb_connect_descriptors {
        			uint32_t qual_len;
        			char* qual;
        			uint32_t bos_len;
        			char* bos;
        			uint32_t strs_len;
        			struct vusb_connect_string_descriptor strs[0];
        		} __attribute__((packed));
        		
        		static const char default_string[] = {
        		    8, USB_DT_STRING,
        		    's', 0, 'y', 0, 'z', 0
        		};
        		
        		static const char default_lang_id[] = {
        		    4, USB_DT_STRING,
        		    0x09, 0x04
        		};
        		
        		static bool lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs,
        						       const struct usb_ctrlrequest* ctrl,
        						       char** response_data, uint32_t* response_length)
        		{
        			struct usb_device_index* index = lookup_usb_index(fd);
        			uint8_t str_idx;
        			if (!index)
        				return false;
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_GET_DESCRIPTOR:
        					switch (ctrl->wValue >> 8) {
        					case USB_DT_DEVICE:
        						*response_data = (char*)index->dev;
        						*response_length = sizeof(*index->dev);
        						return true;
        					case USB_DT_CONFIG:
        						*response_data = (char*)index->config;
        						*response_length = index->config_length;
        						return true;
        					case USB_DT_STRING:
        						str_idx = (uint8_t)ctrl->wValue;
        						if (descs && str_idx < descs->strs_len) {
        							*response_data = descs->strs[str_idx].str;
        							*response_length = descs->strs[str_idx].len;
        							return true;
        						}
        						if (str_idx == 0) {
        							*response_data = (char*)&default_lang_id[0];
        							*response_length = default_lang_id[0];
        							return true;
        						}
        						*response_data = (char*)&default_string[0];
        						*response_length = default_string[0];
        						return true;
        					case USB_DT_BOS:
        						*response_data = descs->bos;
        						*response_length = descs->bos_len;
        						return true;
        					case USB_DT_DEVICE_QUALIFIER:
        						if (!descs->qual) {
        							struct usb_qualifier_descriptor* qual =
        							    (struct usb_qualifier_descriptor*)response_data;
        							qual->bLength = sizeof(*qual);
        							qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
        							qual->bcdUSB = index->dev->bcdUSB;
        							qual->bDeviceClass = index->dev->bDeviceClass;
        							qual->bDeviceSubClass = index->dev->bDeviceSubClass;
        							qual->bDeviceProtocol = index->dev->bDeviceProtocol;
        							qual->bMaxPacketSize0 = index->dev->bMaxPacketSize0;
        							qual->bNumConfigurations = index->dev->bNumConfigurations;
        							qual->bRESERVED = 0;
        							*response_length = sizeof(*qual);
        							return true;
        						}
        						*response_data = descs->qual;
        						*response_length = descs->qual_len;
        						return true;
        					default:
        						break;
        					}
        					break;
        				default:
        					break;
        				}
        				break;
        			default:
        				break;
        			}
        			return false;
        		}
        		
        		typedef bool (*lookup_connect_out_response_t)(int fd, const struct vusb_connect_descriptors* descs,
        							      const struct usb_ctrlrequest* ctrl, bool* done);
        		
        		static bool lookup_connect_response_out_generic(int fd, const struct vusb_connect_descriptors* descs,
        								const struct usb_ctrlrequest* ctrl, bool* done)
        		{
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_SET_CONFIGURATION:
        					*done = true;
        					return true;
        				default:
        					break;
        				}
        				break;
        			}
        			return false;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static int vhci_open(void)
        		{
        			return open("/dev/vhci", O_RDWR);
        		}
        		
        		static int vhci_setport(int fd, u_int port)
        		{
        			struct vhci_ioc_set_port args;
        			args.port = port;
        			return ioctl(fd, VHCI_IOC_SET_PORT, &args);
        		}
        		
        		static int vhci_usb_attach(int fd)
        		{
        			return ioctl(fd, VHCI_IOC_USB_ATTACH, NULL);
        		}
        		
        		static int vhci_usb_recv(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = read(fd, ptr, size);
        				if (done < 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		static int vhci_usb_send(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = write(fd, ptr, size);
        				if (done <= 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static volatile long syz_usb_connect_impl(uint64_t speed, uint64_t dev_len,
        							  const char* dev, const struct vusb_connect_descriptors* descs,
        							  lookup_connect_out_response_t lookup_connect_response_out)
        		{
        			struct usb_device_index* index;
        			int portnum, fd, rv;
        			bool done;
        			portnum = procid + 1;
        			if (!dev) {
        				return -1;
        			}
        			if (portnum != 1) {
        				/* For now, we support only one proc. */
        				return -1;
        			}
        			fd = vhci_open();
        			if (fd < 0) {
        				return -1;
        			}
        			index = add_usb_index(fd, dev, dev_len);
        			if (!index) {
        				goto err;
        			}
        			rv = vhci_setport(fd, portnum);
        			if (rv != 0) {
        				goto err;
        			}
        			rv = vhci_usb_attach(fd);
        			if (rv != 0) {
        				goto err;
        			}
        			done = false;
        			while (!done) {
        				vhci_request_t req;
        				rv = vhci_usb_recv(fd, &req, sizeof(req));
        				if (rv != 0) {
        					goto err;
        				}
        				if (req.type != VHCI_REQ_CTRL) {
        					goto err;
        				}
        				char* response_data = NULL;
        				uint32_t response_length = 0;
        				char data[4096];
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					bool response_found = false;
        		response_found = lookup_connect_response_in(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &response_data, &response_length);
        					if (!response_found) {
        						goto err;
        					}
        				} else {
        					if (!lookup_connect_response_out(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &done)) {
        						goto err;
        					}
        					response_data = NULL;
        					response_length = UGETW(req.u.ctrl.wLength);
        				}
        				if ((req.u.ctrl.bmRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        				    req.u.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
        					/* TODO: possibly revisit */
        				}
        				if (response_length > sizeof(data))
        					response_length = 0;
        				if ((uint32_t)UGETW(req.u.ctrl.wLength) < response_length)
        					response_length = UGETW(req.u.ctrl.wLength);
        				if (response_data)
        					memcpy(data, response_data, response_length);
        				else
        					memset(data, 0, response_length);
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					if (response_length > 0) {
        						vhci_response_t res;
        						res.size = response_length;
        						rv = vhci_usb_send(fd, &res, sizeof(res));
        						if (rv == 0)
        							rv = vhci_usb_send(fd, data, response_length);
        					}
        				} else {
        					rv = vhci_usb_recv(fd, data, response_length);
        				}
        				if (rv < 0) {
        					goto err;
        				}
        			}
        			sleep_ms(200);
        			return fd;
        		
        		err:
        			close(fd);
        			return -1;
        		}
        		
        		static volatile long syz_usb_connect(volatile long a0, volatile long a1,
        						     volatile long a2, volatile long a3)
        		{
        			uint64_t speed = a0;
        			uint64_t dev_len = a1;
        			const char* dev = (const char*)a2;
        			const struct vusb_connect_descriptors* descs = (const struct vusb_connect_descriptors*)a3;
        			return syz_usb_connect_impl(speed, dev_len, dev, descs,
        						    &lookup_connect_response_out_generic);
        		}
        		
        		static volatile long syz_usb_disconnect(volatile long a0)
        		{
        			int fd = a0;
        			int rv = close(fd);
        			sleep_ms(200);
        			return rv;
        		}
        		
        		static void sandbox_common()
        		{
        			if (setsid() == -1)
        			exit(1);
        			struct rlimit rlim;
        			rlim.rlim_cur = rlim.rlim_max = 8 << 20;
        			setrlimit(RLIMIT_MEMLOCK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_FSIZE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_STACK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 0;
        			setrlimit(RLIMIT_CORE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 256;
        			setrlimit(RLIMIT_NOFILE, &rlim);
        		}
        		
        		static void loop();
        		
        		static int do_sandbox_none(void)
        		{
        			sandbox_common();
        			loop();
        			return 0;
        		}
        		
        		static long syz_execute_func(volatile long text)
        		{
        			volatile long p[8] = {0};
        			(void)p;
        			asm volatile("" ::"r"(0l), "r"(1l), "r"(2l), "r"(3l), "r"(4l), "r"(5l), "r"(6l),
        				     "r"(7l), "r"(8l), "r"(9l), "r"(10l), "r"(11l), "r"(12l), "r"(13l));
        		((void (*)(void))(text))();
        			return 0;
        		}
        		
        		struct thread_t {
        			int created, call;
        			event_t ready, done;
        		};
        		
        		static struct thread_t threads[16];
        		static void execute_call(int call);
        		static int running;
        		
        		static void* thr(void* arg)
        		{
        			struct thread_t* th = (struct thread_t*)arg;
        			for (;;) {
        				event_wait(&th->ready);
        				event_reset(&th->ready);
        				execute_call(th->call);
        				__atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
        				event_set(&th->done);
        			}
        			return 0;
        		}
        		
        		static void execute_one(void)
        		{
        			int i, call, thread;
        			int collide = 0;
        		again:
        			for (call = 0; call < 15; call++) {
        				for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) {
        					struct thread_t* th = &threads[thread];
        					if (!th->created) {
        						th->created = 1;
        						event_init(&th->ready);
        						event_init(&th->done);
        						event_set(&th->done);
        						thread_start(thr, th);
        					}
        					if (!event_isset(&th->done))
        						continue;
        					event_reset(&th->done);
        					th->call = call;
        					__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        					event_set(&th->ready);
        					if (collide && (call % 2) == 0)
        						break;
        					event_timedwait(&th->done, 45 + (call == 13 ? 3000 : 0) + (call == 14 ? 300 : 0));
        					break;
        				}
        			}
        			for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
        				sleep_ms(1);
        			if (!collide) {
        				collide = 1;
        				goto again;
        			}
        		}
        		
        		static void execute_one(void);
        		
        		#define WAIT_FLAGS 0
        		
        		static void loop(void)
        		{
        			int iter;
        			for (iter = 0;; iter++) {
        				char cwdbuf[32];
        				sprintf(cwdbuf, "./%d", iter);
        				if (mkdir(cwdbuf, 0777))
        			exit(1);
        				int pid = fork();
        				if (pid < 0)
        			exit(1);
        				if (pid == 0) {
        					if (chdir(cwdbuf))
        			exit(1);
        					execute_one();
        					exit(0);
        				}
        				int status = 0;
        				uint64_t start = current_time_ms();
        				for (;;) {
        					if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        						break;
        					sleep_ms(1);
        					if (current_time_ms() - start < 5 * 1000)
        						continue;
        					kill_and_wait(pid, &status);
        					break;
        				}
        				remove_dir(cwdbuf);
        			}
        		}
        		
        		#ifndef SYS_access
        		#define SYS_access 33
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_lseek
        		#define SYS_lseek 199
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_shmctl
        		#define SYS_shmctl 443
        		#endif
        		#ifndef SYS_shmget
        		#define SYS_shmget 231
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_socketpair
        		#define SYS_socketpair 135
        		#endif
        		
        		uint64_t r[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_socketpair, 1ul, 1ul, 0, 0x20000000ul);
        				if (res != -1) {
        		r[0] = *(uint32_t*)0x20000000;
        		r[1] = *(uint32_t*)0x20000004;
        				}
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = 8;
        				syscall(SYS_getpeername, r[1], 0x20000040ul, 0x20000080ul);
        				break;
        			case 2:
        				syscall(SYS_lseek, r[0], 5ul, 1ul);
        				break;
        			case 3:
        		memcpy((void*)0x200000c0, "./file0\000", 8);
        				syscall(SYS_access, 0x200000c0ul, 2ul);
        				break;
        			case 4:
        				res = syscall(SYS_socket, 1ul, 1ul, 0);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 5:
        		*(uint64_t*)0x200014c0 = 0x20000100;
        		*(uint32_t*)0x200014c8 = 0xc;
        		*(uint64_t*)0x200014d0 = 0x20001340;
        		*(uint64_t*)0x20001340 = 0x20000140;
        		*(uint64_t*)0x20001348 = 0x4d;
        		*(uint64_t*)0x20001350 = 0x200001c0;
        		*(uint64_t*)0x20001358 = 0x8d;
        		*(uint64_t*)0x20001360 = 0x20000280;
        		*(uint64_t*)0x20001368 = 0x25;
        		*(uint64_t*)0x20001370 = 0x200002c0;
        		*(uint64_t*)0x20001378 = 0x1000;
        		*(uint64_t*)0x20001380 = 0x200012c0;
        		*(uint64_t*)0x20001388 = 0x5f;
        		*(uint64_t*)0x200014d8 = 5;
        		*(uint64_t*)0x200014e0 = 0x200013c0;
        		*(uint64_t*)0x200014e8 = 0xd8;
        		*(uint32_t*)0x200014f0 = 0;
        				syscall(SYS_recvmsg, r[2], 0x200014c0ul, 0x40ul);
        				break;
        			case 6:
        				res = syscall(SYS_shmget, 0x798dd814ul, 0x3000ul, 0x60ul, 0x20ffc000ul);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 7:
        				syscall(SYS_shmctl, r[3], 4ul, 0);
        				break;
        			case 8:
        				res = syscall(SYS_socket, 0x18ul, 5ul, 0x3e);
        				if (res != -1)
        						r[4] = res;
        				break;
        			case 9:
        				syscall(SYS_mmap, 0x20ffd000ul, 0x2000ul, 1ul, 0x210ul, r[4], 0ul, 0x100000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\x5e\xca\xd8\xbb\x62\x7a\x3a\x76\x50\x4a\xd2\xe0\x3a\x19\x6c\x8c\x75\xbb\xf9\x78\xbb\xa9\x8c\x2d\xf5\xe2\x6a\x5d\x25\xf8\x4e\x08\x3d\xe8\xf2\x7b\x7f\xfe\xda\x58\x1b\x9a\xdc\x9a\xae\xeb\x97\xdb\x43\x38\x22\xdb\xbb\xf3\xa9\x00\x27\x38\x4a\xbb\x2e\x61\x43\x27\xb7\xdd\xd4\xbc\xbb\x87\x04\xd5\x75\x56\x3b\x2e\xcc\x9b\x13\xeb\xcc\x1d\x5f\x0a\xd4\xfd\x25\x0a\x79\xa3\x98\x3b\x54\x05\xaa\xe0\x36\x55\x03\x0e\x16\x0b\x22\xa6\x61\xf0\x1c\xab\xaa\xf0\xfe\x28\xfd\xed\x43\xed\xee\xea\xba\x8e\x29\xe7\xa5\x5e\xd1\x60", 126);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\x41\xb3\x7d\x67\x16\xc4\xc1\x19\x5d\x3c\xc4\x63\xa6\xf6\xb3\x86\x5f\x64\x64\x40\x0f\x91\xfc\xc4\x02\xb5\x8e\x45\x0c\xd3\x10\xfa\xf2\x0f\x2b\x31\xc4\xc1\xed\xdd\x69\x0b\xc4\xc2\x0d\x0c\xd1", 48);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000100, "\x00\x30\x4f\xf9\x82\x3a\x61\x45\xaf\xcf\xab\xe5\x9e\x7b\x44\x8a\xf5\x19\x13\x09\x95\x66\xd6\xb4\x99\x44\x63\xd5\x2f\xf7\x0c\x87\xd9\x5b\xd6\x58\xf3\x13\xdd\x8f\x6e\xf2\xae\x26\xb1\x30\xa2\x96\xec\x42\x60\x64\xb7\x96\x66\x1a\x0a", 57);
        		memcpy((void*)0x20000140, "\x8e\xb1\x2c\x0b\x12\xb9\xe8\x10\x70\x0f\x13\xd7\x30\x40\x08\x7e\x8a\x51\xc0\xe0\x50\x46\x23\xd6\x84\x34\x51\xcc\xdf\xfc\xe9", 31);
        				res = syz_usb_connect(0x374, 0x39, 0x20000100, 0x20000140);
        				if (res != -1)
        						r[5] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[5]);
        				break;
        			}
        		
        		}
        		int main(void)
        		{
        				syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul);
        					use_temporary_dir();
        					do_sandbox_none();
        			return 0;
        		}
        		
        		<stdin>: In function 'syz_usb_connect_impl':
        		<stdin>:637:63: error: unknown type name 'usb_ctrlrequest'
        		<stdin>:642:55: error: unknown type name 'usb_ctrlrequest'
        		
        		compiler invocation: /syzkaller/netbsd/src/../tools/bin/x86_64--netbsd-g++ [-o /tmp/syz-executor230340207 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/8 (0.19s)
        	csource_test.go:123: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Sandbox:setuid Fault:false FaultCall:0 FaultNth:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false UseTmpDir:true HandleSegv:false Repro:false Trace:false}
        		program:
        		socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
        		getpeername$unix(r1, &(0x7f0000000040)=@abs, &(0x7f0000000080)=0x8)
        		lseek(r0, 0x5, 0x1)
        		access(&(0x7f00000000c0)='./file0\x00', 0x2)
        		r2 = socket$unix(0x1, 0x1, 0x0)
        		recvmsg(r2, &(0x7f00000014c0)={&(0x7f0000000100)=@in6, 0xc, &(0x7f0000001340)=[{&(0x7f0000000140)=""/77, 0x4d}, {&(0x7f00000001c0)=""/141, 0x8d}, {&(0x7f0000000280)=""/37, 0x25}, {&(0x7f00000002c0)=""/4096, 0x1000}, {&(0x7f00000012c0)=""/95, 0x5f}], 0x5, &(0x7f00000013c0)=""/216, 0xd8}, 0x40)
        		r3 = shmget(0x1, 0x3000, 0x60, &(0x7f0000ffc000/0x3000)=nil)
        		shmctl$SHM_UNLOCK(r3, 0x4)
        		r4 = socket$inet6(0x18, 0x5, 0x3e)
        		mmap(&(0x7f0000ffd000/0x2000)=nil, 0x2000, 0x1, 0x210, r4, 0x0, 0x100000000)
        		syz_emit_ethernet(0x7e, &(0x7f0000000000)="5ecad8bb627a3a76504ad2e03a196c8c75bbf978bba98c2df5e26a5d25f84e083de8f27b7ffeda581b9adc9aaeeb97db433822dbbbf3a90027384abb2e614327b7ddd4bcbb8704d575563b2ecc9b13ebcc1d5f0ad4fd250a79a3983b5405aae03655030e160b22a661f01cabaaf0fe28fded43edeeeaba8e29e7a55ed160")
        		syz_execute_func(&(0x7f0000000080)="c441b37d6716c4c1195d3cc463a6f6b3865f6464400f91fcc402b58e450cd310faf20f2b31c4c1eddd690bc4c20d0cd1")
        		syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x2)
        		r5 = syz_usb_connect(0x374, 0x39, &(0x7f0000000100)="00304ff9823a6145afcfabe59e7b448af51913099566d6b4994463d52ff70c87d95bd658f313dd8f6ef2ae26b130a296ec426064b796661a0a", &(0x7f0000000140)="8eb12c0b12b9e810700f13d73040087e8a51c0e0504623d6843451ccdffce9")
        		syz_usb_disconnect(r5)
        		
        	csource_test.go:124: failed to build program:
        		// autogenerated by syzkaller (https://github.com/google/syzkaller)
        		
        		#define _GNU_SOURCE 
        		
        		#include <dev/usb/usb.h>
        		#include <dev/usb/usbhid.h>
        		#include <dev/usb/vhci.h>
        		#include <dirent.h>
        		#include <endian.h>
        		#include <errno.h>
        		#include <fcntl.h>
        		#include <pthread.h>
        		#include <pwd.h>
        		#include <signal.h>
        		#include <stdarg.h>
        		#include <stdbool.h>
        		#include <stdint.h>
        		#include <stdio.h>
        		#include <stdlib.h>
        		#include <string.h>
        		#include <sys/ioctl.h>
        		#include <sys/resource.h>
        		#include <sys/stat.h>
        		#include <sys/syscall.h>
        		#include <sys/types.h>
        		#include <sys/wait.h>
        		#include <time.h>
        		#include <unistd.h>
        		
        		static unsigned long long procid;
        		
        		static void kill_and_wait(int pid, int* status)
        		{
        			kill(pid, SIGKILL);
        			while (waitpid(-1, status, 0) != pid) {
        			}
        		}
        		
        		static void sleep_ms(uint64_t ms)
        		{
        			usleep(ms * 1000);
        		}
        		
        		static uint64_t current_time_ms(void)
        		{
        			struct timespec ts;
        			if (clock_gettime(CLOCK_MONOTONIC, &ts))
        			exit(1);
        			return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
        		}
        		
        		static void use_temporary_dir(void)
        		{
        			char tmpdir_template[] = "./syzkaller.XXXXXX";
        			char* tmpdir = mkdtemp(tmpdir_template);
        			if (!tmpdir)
        			exit(1);
        			if (chmod(tmpdir, 0777))
        			exit(1);
        			if (chdir(tmpdir))
        			exit(1);
        		}
        		
        		static void remove_dir(const char* dir)
        		{
        			DIR* dp;
        			struct dirent* ep;
        			dp = opendir(dir);
        			if (dp == NULL)
        			exit(1);
        			while ((ep = readdir(dp))) {
        				if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
        					continue;
        				char filename[FILENAME_MAX];
        				snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
        				struct stat st;
        				if (lstat(filename, &st))
        			exit(1);
        				if (S_ISDIR(st.st_mode)) {
        					remove_dir(filename);
        					continue;
        				}
        				if (unlink(filename))
        			exit(1);
        			}
        			closedir(dp);
        			if (rmdir(dir))
        			exit(1);
        		}
        		
        		static void thread_start(void* (*fn)(void*), void* arg)
        		{
        			pthread_t th;
        			pthread_attr_t attr;
        			pthread_attr_init(&attr);
        			pthread_attr_setstacksize(&attr, 128 << 10);
        			int i;
        			for (i = 0; i < 100; i++) {
        				if (pthread_create(&th, &attr, fn, arg) == 0) {
        					pthread_attr_destroy(&attr);
        					return;
        				}
        				if (errno == EAGAIN) {
        					usleep(50);
        					continue;
        				}
        				break;
        			}
        			exit(1);
        		}
        		
        		typedef struct {
        			pthread_mutex_t mu;
        			pthread_cond_t cv;
        			int state;
        		} event_t;
        		
        		static void event_init(event_t* ev)
        		{
        			if (pthread_mutex_init(&ev->mu, 0))
        			exit(1);
        			if (pthread_cond_init(&ev->cv, 0))
        			exit(1);
        			ev->state = 0;
        		}
        		
        		static void event_reset(event_t* ev)
        		{
        			ev->state = 0;
        		}
        		
        		static void event_set(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			if (ev->state)
        			exit(1);
        			ev->state = 1;
        			pthread_mutex_unlock(&ev->mu);
        			pthread_cond_broadcast(&ev->cv);
        		}
        		
        		static void event_wait(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			while (!ev->state)
        				pthread_cond_wait(&ev->cv, &ev->mu);
        			pthread_mutex_unlock(&ev->mu);
        		}
        		
        		static int event_isset(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		static int event_timedwait(event_t* ev, uint64_t timeout)
        		{
        			uint64_t start = current_time_ms();
        			uint64_t now = start;
        			pthread_mutex_lock(&ev->mu);
        			for (;;) {
        				if (ev->state)
        					break;
        				uint64_t remain = timeout - (now - start);
        				struct timespec ts;
        				ts.tv_sec = remain / 1000;
        				ts.tv_nsec = (remain % 1000) * 1000 * 1000;
        				pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
        				now = current_time_ms();
        				if (now - start > timeout)
        					break;
        			}
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		/*
        		 * Redefinitions to match the linux types used in common_usb.h.
        		 */
        		
        		struct usb_endpoint_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bEndpointAddress;
        			uint8_t bmAttributes;
        			uint16_t wMaxPacketSize;
        			uint8_t bInterval;
        			uint8_t bRefresh;
        			uint8_t bSynchAddress;
        		} __attribute__((packed));
        		
        		struct usb_device_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint16_t idVendor;
        			uint16_t idProduct;
        			uint16_t bcdDevice;
        			uint8_t iManufacturer;
        			uint8_t iProduct;
        			uint8_t iSerialNumber;
        			uint8_t bNumConfigurations;
        		} __attribute__((packed));
        		
        		struct usb_config_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t wTotalLength;
        			uint8_t bNumInterfaces;
        			uint8_t bConfigurationValue;
        			uint8_t iConfiguration;
        			uint8_t bmAttributes;
        			uint8_t bMaxPower;
        		} __attribute__((packed));
        		
        		struct usb_interface_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bNumEndpoints;
        			uint8_t bInterfaceClass;
        			uint8_t bInterfaceSubClass;
        			uint8_t bInterfaceProtocol;
        			uint8_t iInterface;
        		} __attribute__((packed));
        		
        		struct usb_ctrlrequest {
        			uint8_t bRequestType;
        			uint8_t bRequest;
        			uint16_t wValue;
        			uint16_t wIndex;
        			uint16_t wLength;
        		} __attribute__((packed));
        		
        		struct usb_qualifier_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint8_t bNumConfigurations;
        			uint8_t bRESERVED;
        		} __attribute__((packed));
        		
        		#define USB_TYPE_MASK (0x03 << 5)
        		#define USB_TYPE_STANDARD (0x00 << 5)
        		#define USB_TYPE_CLASS (0x01 << 5)
        		#define USB_TYPE_VENDOR (0x02 << 5)
        		#define USB_TYPE_RESERVED (0x03 << 5)
        		
        		#define USB_DT_DEVICE 0x01
        		#define USB_DT_CONFIG 0x02
        		#define USB_DT_STRING 0x03
        		#define USB_DT_INTERFACE 0x04
        		#define USB_DT_ENDPOINT 0x05
        		#define USB_DT_DEVICE_QUALIFIER 0x06
        		#define USB_DT_OTHER_SPEED_CONFIG 0x07
        		#define USB_DT_INTERFACE_POWER 0x08
        		#define USB_DT_OTG 0x09
        		#define USB_DT_DEBUG 0x0a
        		#define USB_DT_INTERFACE_ASSOCIATION 0x0b
        		#define USB_DT_SECURITY 0x0c
        		#define USB_DT_KEY 0x0d
        		#define USB_DT_ENCRYPTION_TYPE 0x0e
        		#define USB_DT_BOS 0x0f
        		#define USB_DT_DEVICE_CAPABILITY 0x10
        		#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
        		#define USB_DT_WIRE_ADAPTER 0x21
        		#define USB_DT_RPIPE 0x22
        		#define USB_DT_CS_RADIO_CONTROL 0x23
        		#define USB_DT_PIPE_USAGE 0x24
        		#define USB_DT_SS_ENDPOINT_COMP 0x30
        		#define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31
        		
        		#define USB_REQ_GET_STATUS 0x00
        		#define USB_REQ_CLEAR_FEATURE 0x01
        		#define USB_REQ_SET_FEATURE 0x03
        		#define USB_REQ_SET_ADDRESS 0x05
        		#define USB_REQ_GET_DESCRIPTOR 0x06
        		#define USB_REQ_SET_DESCRIPTOR 0x07
        		#define USB_REQ_GET_CONFIGURATION 0x08
        		#define USB_REQ_SET_CONFIGURATION 0x09
        		#define USB_REQ_GET_INTERFACE 0x0A
        		#define USB_REQ_SET_INTERFACE 0x0B
        		#define USB_REQ_SYNCH_FRAME 0x0C
        		#define USB_REQ_SET_SEL 0x30
        		#define USB_REQ_SET_ISOCH_DELAY 0x31
        		
        		#define USB_REQ_SET_ENCRYPTION 0x0D
        		#define USB_REQ_GET_ENCRYPTION 0x0E
        		#define USB_REQ_RPIPE_ABORT 0x0E
        		#define USB_REQ_SET_HANDSHAKE 0x0F
        		#define USB_REQ_RPIPE_RESET 0x0F
        		#define USB_REQ_GET_HANDSHAKE 0x10
        		#define USB_REQ_SET_CONNECTION 0x11
        		#define USB_REQ_SET_SECURITY_DATA 0x12
        		#define USB_REQ_GET_SECURITY_DATA 0x13
        		#define USB_REQ_SET_WUSB_DATA 0x14
        		#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
        		#define USB_REQ_LOOPBACK_DATA_READ 0x16
        		#define USB_REQ_SET_INTERFACE_DS 0x17
        		
        		#define USB_REQ_GET_PARTNER_PDO 20
        		#define USB_REQ_GET_BATTERY_STATUS 21
        		#define USB_REQ_SET_PDO 22
        		#define USB_REQ_GET_VDM 23
        		#define USB_REQ_SEND_VDM 24
        		
        		#define USB_MAX_IFACE_NUM 4
        		#define USB_MAX_EP_NUM 32
        		#define USB_MAX_FDS 6
        		
        		struct usb_endpoint_index {
        			struct usb_endpoint_descriptor desc;
        			int handle;
        		};
        		
        		struct usb_iface_index {
        			struct usb_interface_descriptor* iface;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bInterfaceClass;
        			struct usb_endpoint_index eps[USB_MAX_EP_NUM];
        			int eps_num;
        		};
        		
        		struct usb_device_index {
        			struct usb_device_descriptor* dev;
        			struct usb_config_descriptor* config;
        			uint8_t bDeviceClass;
        			uint8_t bMaxPower;
        			int config_length;
        			struct usb_iface_index ifaces[USB_MAX_IFACE_NUM];
        			int ifaces_num;
        			int iface_cur;
        		};
        		
        		struct usb_info {
        			int fd;
        			struct usb_device_index index;
        		};
        		
        		static struct usb_info usb_devices[USB_MAX_FDS];
        		static int usb_devices_num;
        		
        		static bool parse_usb_descriptor(const char* buffer, size_t length, struct usb_device_index* index)
        		{
        			if (length < sizeof(*index->dev) + sizeof(*index->config))
        				return false;
        			memset(index, 0, sizeof(*index));
        			index->dev = (struct usb_device_descriptor*)buffer;
        			index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev));
        			index->bDeviceClass = index->dev->bDeviceClass;
        			index->bMaxPower = index->config->bMaxPower;
        			index->config_length = length - sizeof(*index->dev);
        			index->iface_cur = -1;
        			size_t offset = 0;
        			while (true) {
        				if (offset + 1 >= length)
        					break;
        				uint8_t desc_length = buffer[offset];
        				uint8_t desc_type = buffer[offset + 1];
        				if (desc_length <= 2)
        					break;
        				if (offset + desc_length > length)
        					break;
        				if (desc_type == USB_DT_INTERFACE && index->ifaces_num < USB_MAX_IFACE_NUM) {
        					struct usb_interface_descriptor* iface = (struct usb_interface_descriptor*)(buffer + offset);
        					index->ifaces[index->ifaces_num].iface = iface;
        					index->ifaces[index->ifaces_num].bInterfaceNumber = iface->bInterfaceNumber;
        					index->ifaces[index->ifaces_num].bAlternateSetting = iface->bAlternateSetting;
        					index->ifaces[index->ifaces_num].bInterfaceClass = iface->bInterfaceClass;
        					index->ifaces_num++;
        				}
        				if (desc_type == USB_DT_ENDPOINT && index->ifaces_num > 0) {
        					struct usb_iface_index* iface = &index->ifaces[index->ifaces_num - 1];
        					if (iface->eps_num < USB_MAX_EP_NUM) {
        						memcpy(&iface->eps[iface->eps_num].desc, buffer + offset, sizeof(iface->eps[iface->eps_num].desc));
        						iface->eps_num++;
        					}
        				}
        				offset += desc_length;
        			}
        			return true;
        		}
        		
        		static struct usb_device_index* add_usb_index(int fd, const char* dev, size_t dev_len)
        		{
        			int i = __atomic_fetch_add(&usb_devices_num, 1, __ATOMIC_RELAXED);
        			if (i >= USB_MAX_FDS)
        				return NULL;
        			int rv = 0;
        		rv = parse_usb_descriptor(dev, dev_len, &usb_devices[i].index);
        			if (!rv)
        				return NULL;
        			__atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE);
        			return &usb_devices[i].index;
        		}
        		
        		static struct usb_device_index* lookup_usb_index(int fd)
        		{
        			int i;
        			for (i = 0; i < USB_MAX_FDS; i++) {
        				if (__atomic_load_n(&usb_devices[i].fd, __ATOMIC_ACQUIRE) == fd) {
        					return &usb_devices[i].index;
        				}
        			}
        			return NULL;
        		}
        		
        		struct vusb_connect_string_descriptor {
        			uint32_t len;
        			char* str;
        		} __attribute__((packed));
        		
        		struct vusb_connect_descriptors {
        			uint32_t qual_len;
        			char* qual;
        			uint32_t bos_len;
        			char* bos;
        			uint32_t strs_len;
        			struct vusb_connect_string_descriptor strs[0];
        		} __attribute__((packed));
        		
        		static const char default_string[] = {
        		    8, USB_DT_STRING,
        		    's', 0, 'y', 0, 'z', 0
        		};
        		
        		static const char default_lang_id[] = {
        		    4, USB_DT_STRING,
        		    0x09, 0x04
        		};
        		
        		static bool lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs,
        						       const struct usb_ctrlrequest* ctrl,
        						       char** response_data, uint32_t* response_length)
        		{
        			struct usb_device_index* index = lookup_usb_index(fd);
        			uint8_t str_idx;
        			if (!index)
        				return false;
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_GET_DESCRIPTOR:
        					switch (ctrl->wValue >> 8) {
        					case USB_DT_DEVICE:
        						*response_data = (char*)index->dev;
        						*response_length = sizeof(*index->dev);
        						return true;
        					case USB_DT_CONFIG:
        						*response_data = (char*)index->config;
        						*response_length = index->config_length;
        						return true;
        					case USB_DT_STRING:
        						str_idx = (uint8_t)ctrl->wValue;
        						if (descs && str_idx < descs->strs_len) {
        							*response_data = descs->strs[str_idx].str;
        							*response_length = descs->strs[str_idx].len;
        							return true;
        						}
        						if (str_idx == 0) {
        							*response_data = (char*)&default_lang_id[0];
        							*response_length = default_lang_id[0];
        							return true;
        						}
        						*response_data = (char*)&default_string[0];
        						*response_length = default_string[0];
        						return true;
        					case USB_DT_BOS:
        						*response_data = descs->bos;
        						*response_length = descs->bos_len;
        						return true;
        					case USB_DT_DEVICE_QUALIFIER:
        						if (!descs->qual) {
        							struct usb_qualifier_descriptor* qual =
        							    (struct usb_qualifier_descriptor*)response_data;
        							qual->bLength = sizeof(*qual);
        							qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
        							qual->bcdUSB = index->dev->bcdUSB;
        							qual->bDeviceClass = index->dev->bDeviceClass;
        							qual->bDeviceSubClass = index->dev->bDeviceSubClass;
        							qual->bDeviceProtocol = index->dev->bDeviceProtocol;
        							qual->bMaxPacketSize0 = index->dev->bMaxPacketSize0;
        							qual->bNumConfigurations = index->dev->bNumConfigurations;
        							qual->bRESERVED = 0;
        							*response_length = sizeof(*qual);
        							return true;
        						}
        						*response_data = descs->qual;
        						*response_length = descs->qual_len;
        						return true;
        					default:
        						break;
        					}
        					break;
        				default:
        					break;
        				}
        				break;
        			default:
        				break;
        			}
        			return false;
        		}
        		
        		typedef bool (*lookup_connect_out_response_t)(int fd, const struct vusb_connect_descriptors* descs,
        							      const struct usb_ctrlrequest* ctrl, bool* done);
        		
        		static bool lookup_connect_response_out_generic(int fd, const struct vusb_connect_descriptors* descs,
        								const struct usb_ctrlrequest* ctrl, bool* done)
        		{
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_SET_CONFIGURATION:
        					*done = true;
        					return true;
        				default:
        					break;
        				}
        				break;
        			}
        			return false;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static int vhci_open(void)
        		{
        			return open("/dev/vhci", O_RDWR);
        		}
        		
        		static int vhci_setport(int fd, u_int port)
        		{
        			struct vhci_ioc_set_port args;
        			args.port = port;
        			return ioctl(fd, VHCI_IOC_SET_PORT, &args);
        		}
        		
        		static int vhci_usb_attach(int fd)
        		{
        			return ioctl(fd, VHCI_IOC_USB_ATTACH, NULL);
        		}
        		
        		static int vhci_usb_recv(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = read(fd, ptr, size);
        				if (done < 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		static int vhci_usb_send(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = write(fd, ptr, size);
        				if (done <= 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static volatile long syz_usb_connect_impl(uint64_t speed, uint64_t dev_len,
        							  const char* dev, const struct vusb_connect_descriptors* descs,
        							  lookup_connect_out_response_t lookup_connect_response_out)
        		{
        			struct usb_device_index* index;
        			int portnum, fd, rv;
        			bool done;
        			portnum = procid + 1;
        			if (!dev) {
        				return -1;
        			}
        			if (portnum != 1) {
        				/* For now, we support only one proc. */
        				return -1;
        			}
        			fd = vhci_open();
        			if (fd < 0) {
        				return -1;
        			}
        			index = add_usb_index(fd, dev, dev_len);
        			if (!index) {
        				goto err;
        			}
        			rv = vhci_setport(fd, portnum);
        			if (rv != 0) {
        				goto err;
        			}
        			rv = vhci_usb_attach(fd);
        			if (rv != 0) {
        				goto err;
        			}
        			done = false;
        			while (!done) {
        				vhci_request_t req;
        				rv = vhci_usb_recv(fd, &req, sizeof(req));
        				if (rv != 0) {
        					goto err;
        				}
        				if (req.type != VHCI_REQ_CTRL) {
        					goto err;
        				}
        				char* response_data = NULL;
        				uint32_t response_length = 0;
        				char data[4096];
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					bool response_found = false;
        		response_found = lookup_connect_response_in(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &response_data, &response_length);
        					if (!response_found) {
        						goto err;
        					}
        				} else {
        					if (!lookup_connect_response_out(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &done)) {
        						goto err;
        					}
        					response_data = NULL;
        					response_length = UGETW(req.u.ctrl.wLength);
        				}
        				if ((req.u.ctrl.bmRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        				    req.u.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
        					/* TODO: possibly revisit */
        				}
        				if (response_length > sizeof(data))
        					response_length = 0;
        				if ((uint32_t)UGETW(req.u.ctrl.wLength) < response_length)
        					response_length = UGETW(req.u.ctrl.wLength);
        				if (response_data)
        					memcpy(data, response_data, response_length);
        				else
        					memset(data, 0, response_length);
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					if (response_length > 0) {
        						vhci_response_t res;
        						res.size = response_length;
        						rv = vhci_usb_send(fd, &res, sizeof(res));
        						if (rv == 0)
        							rv = vhci_usb_send(fd, data, response_length);
        					}
        				} else {
        					rv = vhci_usb_recv(fd, data, response_length);
        				}
        				if (rv < 0) {
        					goto err;
        				}
        			}
        			sleep_ms(200);
        			return fd;
        		
        		err:
        			close(fd);
        			return -1;
        		}
        		
        		static volatile long syz_usb_connect(volatile long a0, volatile long a1,
        						     volatile long a2, volatile long a3)
        		{
        			uint64_t speed = a0;
        			uint64_t dev_len = a1;
        			const char* dev = (const char*)a2;
        			const struct vusb_connect_descriptors* descs = (const struct vusb_connect_descriptors*)a3;
        			return syz_usb_connect_impl(speed, dev_len, dev, descs,
        						    &lookup_connect_response_out_generic);
        		}
        		
        		static volatile long syz_usb_disconnect(volatile long a0)
        		{
        			int fd = a0;
        			int rv = close(fd);
        			sleep_ms(200);
        			return rv;
        		}
        		
        		static void sandbox_common()
        		{
        			if (setsid() == -1)
        			exit(1);
        			struct rlimit rlim;
        			rlim.rlim_cur = rlim.rlim_max = 8 << 20;
        			setrlimit(RLIMIT_MEMLOCK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_FSIZE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_STACK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 0;
        			setrlimit(RLIMIT_CORE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 256;
        			setrlimit(RLIMIT_NOFILE, &rlim);
        		}
        		
        		static void loop();
        		
        		static int wait_for_loop(int pid)
        		{
        			if (pid < 0)
        			exit(1);
        			int status = 0;
        			while (waitpid(-1, &status, WUNTRACED) != pid) {
        			}
        			return WEXITSTATUS(status);
        		}
        		
        		static int do_sandbox_setuid(void)
        		{
        			int pid = fork();
        			if (pid != 0)
        				return wait_for_loop(pid);
        			sandbox_common();
        			char pwbuf[1024];
        			struct passwd *pw, pwres;
        			if (getpwnam_r("nobody", &pwres, pwbuf, sizeof(pwbuf), &pw) != 0 || !pw)
        			exit(1);
        			if (setgroups(0, NULL))
        			exit(1);
        			if (setgid(pw->pw_gid))
        			exit(1);
        			if (setuid(pw->pw_uid))
        			exit(1);
        			loop();
        			exit(1);
        		}
        		
        		static long syz_execute_func(volatile long text)
        		{
        			volatile long p[8] = {0};
        			(void)p;
        			asm volatile("" ::"r"(0l), "r"(1l), "r"(2l), "r"(3l), "r"(4l), "r"(5l), "r"(6l),
        				     "r"(7l), "r"(8l), "r"(9l), "r"(10l), "r"(11l), "r"(12l), "r"(13l));
        		((void (*)(void))(text))();
        			return 0;
        		}
        		
        		struct thread_t {
        			int created, call;
        			event_t ready, done;
        		};
        		
        		static struct thread_t threads[16];
        		static void execute_call(int call);
        		static int running;
        		
        		static void* thr(void* arg)
        		{
        			struct thread_t* th = (struct thread_t*)arg;
        			for (;;) {
        				event_wait(&th->ready);
        				event_reset(&th->ready);
        				execute_call(th->call);
        				__atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
        				event_set(&th->done);
        			}
        			return 0;
        		}
        		
        		static void execute_one(void)
        		{
        			int i, call, thread;
        			for (call = 0; call < 15; call++) {
        				for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) {
        					struct thread_t* th = &threads[thread];
        					if (!th->created) {
        						th->created = 1;
        						event_init(&th->ready);
        						event_init(&th->done);
        						event_set(&th->done);
        						thread_start(thr, th);
        					}
        					if (!event_isset(&th->done))
        						continue;
        					event_reset(&th->done);
        					th->call = call;
        					__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        					event_set(&th->ready);
        					event_timedwait(&th->done, 45 + (call == 13 ? 3000 : 0) + (call == 14 ? 300 : 0));
        					break;
        				}
        			}
        			for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
        				sleep_ms(1);
        		}
        		
        		static void execute_one(void);
        		
        		#define WAIT_FLAGS 0
        		
        		static void loop(void)
        		{
        			int iter;
        			for (iter = 0;; iter++) {
        				char cwdbuf[32];
        				sprintf(cwdbuf, "./%d", iter);
        				if (mkdir(cwdbuf, 0777))
        			exit(1);
        				int pid = fork();
        				if (pid < 0)
        			exit(1);
        				if (pid == 0) {
        					if (chdir(cwdbuf))
        			exit(1);
        					execute_one();
        					exit(0);
        				}
        				int status = 0;
        				uint64_t start = current_time_ms();
        				for (;;) {
        					if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        						break;
        					sleep_ms(1);
        					if (current_time_ms() - start < 5 * 1000)
        						continue;
        					kill_and_wait(pid, &status);
        					break;
        				}
        				remove_dir(cwdbuf);
        			}
        		}
        		
        		#ifndef SYS_access
        		#define SYS_access 33
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_lseek
        		#define SYS_lseek 199
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_shmctl
        		#define SYS_shmctl 443
        		#endif
        		#ifndef SYS_shmget
        		#define SYS_shmget 231
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_socketpair
        		#define SYS_socketpair 135
        		#endif
        		
        		uint64_t r[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_socketpair, 1ul, 1ul, 0, 0x20000000ul);
        				if (res != -1) {
        		r[0] = *(uint32_t*)0x20000000;
        		r[1] = *(uint32_t*)0x20000004;
        				}
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = 8;
        				syscall(SYS_getpeername, r[1], 0x20000040ul, 0x20000080ul);
        				break;
        			case 2:
        				syscall(SYS_lseek, r[0], 5ul, 1ul);
        				break;
        			case 3:
        		memcpy((void*)0x200000c0, "./file0\000", 8);
        				syscall(SYS_access, 0x200000c0ul, 2ul);
        				break;
        			case 4:
        				res = syscall(SYS_socket, 1ul, 1ul, 0);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 5:
        		*(uint64_t*)0x200014c0 = 0x20000100;
        		*(uint32_t*)0x200014c8 = 0xc;
        		*(uint64_t*)0x200014d0 = 0x20001340;
        		*(uint64_t*)0x20001340 = 0x20000140;
        		*(uint64_t*)0x20001348 = 0x4d;
        		*(uint64_t*)0x20001350 = 0x200001c0;
        		*(uint64_t*)0x20001358 = 0x8d;
        		*(uint64_t*)0x20001360 = 0x20000280;
        		*(uint64_t*)0x20001368 = 0x25;
        		*(uint64_t*)0x20001370 = 0x200002c0;
        		*(uint64_t*)0x20001378 = 0x1000;
        		*(uint64_t*)0x20001380 = 0x200012c0;
        		*(uint64_t*)0x20001388 = 0x5f;
        		*(uint64_t*)0x200014d8 = 5;
        		*(uint64_t*)0x200014e0 = 0x200013c0;
        		*(uint64_t*)0x200014e8 = 0xd8;
        		*(uint32_t*)0x200014f0 = 0;
        				syscall(SYS_recvmsg, r[2], 0x200014c0ul, 0x40ul);
        				break;
        			case 6:
        				res = syscall(SYS_shmget, 0x798dd814ul, 0x3000ul, 0x60ul, 0x20ffc000ul);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 7:
        				syscall(SYS_shmctl, r[3], 4ul, 0);
        				break;
        			case 8:
        				res = syscall(SYS_socket, 0x18ul, 5ul, 0x3e);
        				if (res != -1)
        						r[4] = res;
        				break;
        			case 9:
        				syscall(SYS_mmap, 0x20ffd000ul, 0x2000ul, 1ul, 0x210ul, r[4], 0ul, 0x100000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\x5e\xca\xd8\xbb\x62\x7a\x3a\x76\x50\x4a\xd2\xe0\x3a\x19\x6c\x8c\x75\xbb\xf9\x78\xbb\xa9\x8c\x2d\xf5\xe2\x6a\x5d\x25\xf8\x4e\x08\x3d\xe8\xf2\x7b\x7f\xfe\xda\x58\x1b\x9a\xdc\x9a\xae\xeb\x97\xdb\x43\x38\x22\xdb\xbb\xf3\xa9\x00\x27\x38\x4a\xbb\x2e\x61\x43\x27\xb7\xdd\xd4\xbc\xbb\x87\x04\xd5\x75\x56\x3b\x2e\xcc\x9b\x13\xeb\xcc\x1d\x5f\x0a\xd4\xfd\x25\x0a\x79\xa3\x98\x3b\x54\x05\xaa\xe0\x36\x55\x03\x0e\x16\x0b\x22\xa6\x61\xf0\x1c\xab\xaa\xf0\xfe\x28\xfd\xed\x43\xed\xee\xea\xba\x8e\x29\xe7\xa5\x5e\xd1\x60", 126);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\x41\xb3\x7d\x67\x16\xc4\xc1\x19\x5d\x3c\xc4\x63\xa6\xf6\xb3\x86\x5f\x64\x64\x40\x0f\x91\xfc\xc4\x02\xb5\x8e\x45\x0c\xd3\x10\xfa\xf2\x0f\x2b\x31\xc4\xc1\xed\xdd\x69\x0b\xc4\xc2\x0d\x0c\xd1", 48);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000100, "\x00\x30\x4f\xf9\x82\x3a\x61\x45\xaf\xcf\xab\xe5\x9e\x7b\x44\x8a\xf5\x19\x13\x09\x95\x66\xd6\xb4\x99\x44\x63\xd5\x2f\xf7\x0c\x87\xd9\x5b\xd6\x58\xf3\x13\xdd\x8f\x6e\xf2\xae\x26\xb1\x30\xa2\x96\xec\x42\x60\x64\xb7\x96\x66\x1a\x0a", 57);
        		memcpy((void*)0x20000140, "\x8e\xb1\x2c\x0b\x12\xb9\xe8\x10\x70\x0f\x13\xd7\x30\x40\x08\x7e\x8a\x51\xc0\xe0\x50\x46\x23\xd6\x84\x34\x51\xcc\xdf\xfc\xe9", 31);
        				res = syz_usb_connect(0x374, 0x39, 0x20000100, 0x20000140);
        				if (res != -1)
        						r[5] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[5]);
        				break;
        			}
        		
        		}
        		int main(void)
        		{
        				syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul);
        					use_temporary_dir();
        					do_sandbox_setuid();
        			return 0;
        		}
        		
        		<stdin>: In function 'syz_usb_connect_impl':
        		<stdin>:637:63: error: unknown type name 'usb_ctrlrequest'
        		<stdin>:642:55: error: unknown type name 'usb_ctrlrequest'
        		
        		compiler invocation: /syzkaller/netbsd/src/../tools/bin/x86_64--netbsd-g++ [-o /tmp/syz-executor819948802 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/6 (0.18s)
        	csource_test.go:123: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:4 Sandbox:none Fault:false FaultCall:0 FaultNth:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false UseTmpDir:true HandleSegv:false Repro:false Trace:false}
        		program:
        		socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
        		getpeername$unix(r1, &(0x7f0000000040)=@abs, &(0x7f0000000080)=0x8)
        		lseek(r0, 0x5, 0x1)
        		access(&(0x7f00000000c0)='./file0\x00', 0x2)
        		r2 = socket$unix(0x1, 0x1, 0x0)
        		recvmsg(r2, &(0x7f00000014c0)={&(0x7f0000000100)=@in6, 0xc, &(0x7f0000001340)=[{&(0x7f0000000140)=""/77, 0x4d}, {&(0x7f00000001c0)=""/141, 0x8d}, {&(0x7f0000000280)=""/37, 0x25}, {&(0x7f00000002c0)=""/4096, 0x1000}, {&(0x7f00000012c0)=""/95, 0x5f}], 0x5, &(0x7f00000013c0)=""/216, 0xd8}, 0x40)
        		r3 = shmget(0x1, 0x3000, 0x60, &(0x7f0000ffc000/0x3000)=nil)
        		shmctl$SHM_UNLOCK(r3, 0x4)
        		r4 = socket$inet6(0x18, 0x5, 0x3e)
        		mmap(&(0x7f0000ffd000/0x2000)=nil, 0x2000, 0x1, 0x210, r4, 0x0, 0x100000000)
        		syz_emit_ethernet(0x7e, &(0x7f0000000000)="5ecad8bb627a3a76504ad2e03a196c8c75bbf978bba98c2df5e26a5d25f84e083de8f27b7ffeda581b9adc9aaeeb97db433822dbbbf3a90027384abb2e614327b7ddd4bcbb8704d575563b2ecc9b13ebcc1d5f0ad4fd250a79a3983b5405aae03655030e160b22a661f01cabaaf0fe28fded43edeeeaba8e29e7a55ed160")
        		syz_execute_func(&(0x7f0000000080)="c441b37d6716c4c1195d3cc463a6f6b3865f6464400f91fcc402b58e450cd310faf20f2b31c4c1eddd690bc4c20d0cd1")
        		syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x2)
        		r5 = syz_usb_connect(0x374, 0x39, &(0x7f0000000100)="00304ff9823a6145afcfabe59e7b448af51913099566d6b4994463d52ff70c87d95bd658f313dd8f6ef2ae26b130a296ec426064b796661a0a", &(0x7f0000000140)="8eb12c0b12b9e810700f13d73040087e8a51c0e0504623d6843451ccdffce9")
        		syz_usb_disconnect(r5)
        		
        	csource_test.go:124: failed to build program:
        		// autogenerated by syzkaller (https://github.com/google/syzkaller)
        		
        		#define _GNU_SOURCE 
        		
        		#include <dev/usb/usb.h>
        		#include <dev/usb/usbhid.h>
        		#include <dev/usb/vhci.h>
        		#include <dirent.h>
        		#include <endian.h>
        		#include <errno.h>
        		#include <fcntl.h>
        		#include <pthread.h>
        		#include <pwd.h>
        		#include <signal.h>
        		#include <stdarg.h>
        		#include <stdbool.h>
        		#include <stdint.h>
        		#include <stdio.h>
        		#include <stdlib.h>
        		#include <string.h>
        		#include <sys/ioctl.h>
        		#include <sys/resource.h>
        		#include <sys/stat.h>
        		#include <sys/syscall.h>
        		#include <sys/types.h>
        		#include <sys/wait.h>
        		#include <time.h>
        		#include <unistd.h>
        		
        		static unsigned long long procid;
        		
        		static void kill_and_wait(int pid, int* status)
        		{
        			kill(pid, SIGKILL);
        			while (waitpid(-1, status, 0) != pid) {
        			}
        		}
        		
        		static void sleep_ms(uint64_t ms)
        		{
        			usleep(ms * 1000);
        		}
        		
        		static uint64_t current_time_ms(void)
        		{
        			struct timespec ts;
        			if (clock_gettime(CLOCK_MONOTONIC, &ts))
        			exit(1);
        			return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
        		}
        		
        		static void use_temporary_dir(void)
        		{
        			char tmpdir_template[] = "./syzkaller.XXXXXX";
        			char* tmpdir = mkdtemp(tmpdir_template);
        			if (!tmpdir)
        			exit(1);
        			if (chmod(tmpdir, 0777))
        			exit(1);
        			if (chdir(tmpdir))
        			exit(1);
        		}
        		
        		static void remove_dir(const char* dir)
        		{
        			DIR* dp;
        			struct dirent* ep;
        			dp = opendir(dir);
        			if (dp == NULL)
        			exit(1);
        			while ((ep = readdir(dp))) {
        				if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
        					continue;
        				char filename[FILENAME_MAX];
        				snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
        				struct stat st;
        				if (lstat(filename, &st))
        			exit(1);
        				if (S_ISDIR(st.st_mode)) {
        					remove_dir(filename);
        					continue;
        				}
        				if (unlink(filename))
        			exit(1);
        			}
        			closedir(dp);
        			if (rmdir(dir))
        			exit(1);
        		}
        		
        		static void thread_start(void* (*fn)(void*), void* arg)
        		{
        			pthread_t th;
        			pthread_attr_t attr;
        			pthread_attr_init(&attr);
        			pthread_attr_setstacksize(&attr, 128 << 10);
        			int i;
        			for (i = 0; i < 100; i++) {
        				if (pthread_create(&th, &attr, fn, arg) == 0) {
        					pthread_attr_destroy(&attr);
        					return;
        				}
        				if (errno == EAGAIN) {
        					usleep(50);
        					continue;
        				}
        				break;
        			}
        			exit(1);
        		}
        		
        		typedef struct {
        			pthread_mutex_t mu;
        			pthread_cond_t cv;
        			int state;
        		} event_t;
        		
        		static void event_init(event_t* ev)
        		{
        			if (pthread_mutex_init(&ev->mu, 0))
        			exit(1);
        			if (pthread_cond_init(&ev->cv, 0))
        			exit(1);
        			ev->state = 0;
        		}
        		
        		static void event_reset(event_t* ev)
        		{
        			ev->state = 0;
        		}
        		
        		static void event_set(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			if (ev->state)
        			exit(1);
        			ev->state = 1;
        			pthread_mutex_unlock(&ev->mu);
        			pthread_cond_broadcast(&ev->cv);
        		}
        		
        		static void event_wait(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			while (!ev->state)
        				pthread_cond_wait(&ev->cv, &ev->mu);
        			pthread_mutex_unlock(&ev->mu);
        		}
        		
        		static int event_isset(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		static int event_timedwait(event_t* ev, uint64_t timeout)
        		{
        			uint64_t start = current_time_ms();
        			uint64_t now = start;
        			pthread_mutex_lock(&ev->mu);
        			for (;;) {
        				if (ev->state)
        					break;
        				uint64_t remain = timeout - (now - start);
        				struct timespec ts;
        				ts.tv_sec = remain / 1000;
        				ts.tv_nsec = (remain % 1000) * 1000 * 1000;
        				pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
        				now = current_time_ms();
        				if (now - start > timeout)
        					break;
        			}
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		/*
        		 * Redefinitions to match the linux types used in common_usb.h.
        		 */
        		
        		struct usb_endpoint_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bEndpointAddress;
        			uint8_t bmAttributes;
        			uint16_t wMaxPacketSize;
        			uint8_t bInterval;
        			uint8_t bRefresh;
        			uint8_t bSynchAddress;
        		} __attribute__((packed));
        		
        		struct usb_device_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint16_t idVendor;
        			uint16_t idProduct;
        			uint16_t bcdDevice;
        			uint8_t iManufacturer;
        			uint8_t iProduct;
        			uint8_t iSerialNumber;
        			uint8_t bNumConfigurations;
        		} __attribute__((packed));
        		
        		struct usb_config_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t wTotalLength;
        			uint8_t bNumInterfaces;
        			uint8_t bConfigurationValue;
        			uint8_t iConfiguration;
        			uint8_t bmAttributes;
        			uint8_t bMaxPower;
        		} __attribute__((packed));
        		
        		struct usb_interface_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bNumEndpoints;
        			uint8_t bInterfaceClass;
        			uint8_t bInterfaceSubClass;
        			uint8_t bInterfaceProtocol;
        			uint8_t iInterface;
        		} __attribute__((packed));
        		
        		struct usb_ctrlrequest {
        			uint8_t bRequestType;
        			uint8_t bRequest;
        			uint16_t wValue;
        			uint16_t wIndex;
        			uint16_t wLength;
        		} __attribute__((packed));
        		
        		struct usb_qualifier_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint8_t bNumConfigurations;
        			uint8_t bRESERVED;
        		} __attribute__((packed));
        		
        		#define USB_TYPE_MASK (0x03 << 5)
        		#define USB_TYPE_STANDARD (0x00 << 5)
        		#define USB_TYPE_CLASS (0x01 << 5)
        		#define USB_TYPE_VENDOR (0x02 << 5)
        		#define USB_TYPE_RESERVED (0x03 << 5)
        		
        		#define USB_DT_DEVICE 0x01
        		#define USB_DT_CONFIG 0x02
        		#define USB_DT_STRING 0x03
        		#define USB_DT_INTERFACE 0x04
        		#define USB_DT_ENDPOINT 0x05
        		#define USB_DT_DEVICE_QUALIFIER 0x06
        		#define USB_DT_OTHER_SPEED_CONFIG 0x07
        		#define USB_DT_INTERFACE_POWER 0x08
        		#define USB_DT_OTG 0x09
        		#define USB_DT_DEBUG 0x0a
        		#define USB_DT_INTERFACE_ASSOCIATION 0x0b
        		#define USB_DT_SECURITY 0x0c
        		#define USB_DT_KEY 0x0d
        		#define USB_DT_ENCRYPTION_TYPE 0x0e
        		#define USB_DT_BOS 0x0f
        		#define USB_DT_DEVICE_CAPABILITY 0x10
        		#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
        		#define USB_DT_WIRE_ADAPTER 0x21
        		#define USB_DT_RPIPE 0x22
        		#define USB_DT_CS_RADIO_CONTROL 0x23
        		#define USB_DT_PIPE_USAGE 0x24
        		#define USB_DT_SS_ENDPOINT_COMP 0x30
        		#define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31
        		
        		#define USB_REQ_GET_STATUS 0x00
        		#define USB_REQ_CLEAR_FEATURE 0x01
        		#define USB_REQ_SET_FEATURE 0x03
        		#define USB_REQ_SET_ADDRESS 0x05
        		#define USB_REQ_GET_DESCRIPTOR 0x06
        		#define USB_REQ_SET_DESCRIPTOR 0x07
        		#define USB_REQ_GET_CONFIGURATION 0x08
        		#define USB_REQ_SET_CONFIGURATION 0x09
        		#define USB_REQ_GET_INTERFACE 0x0A
        		#define USB_REQ_SET_INTERFACE 0x0B
        		#define USB_REQ_SYNCH_FRAME 0x0C
        		#define USB_REQ_SET_SEL 0x30
        		#define USB_REQ_SET_ISOCH_DELAY 0x31
        		
        		#define USB_REQ_SET_ENCRYPTION 0x0D
        		#define USB_REQ_GET_ENCRYPTION 0x0E
        		#define USB_REQ_RPIPE_ABORT 0x0E
        		#define USB_REQ_SET_HANDSHAKE 0x0F
        		#define USB_REQ_RPIPE_RESET 0x0F
        		#define USB_REQ_GET_HANDSHAKE 0x10
        		#define USB_REQ_SET_CONNECTION 0x11
        		#define USB_REQ_SET_SECURITY_DATA 0x12
        		#define USB_REQ_GET_SECURITY_DATA 0x13
        		#define USB_REQ_SET_WUSB_DATA 0x14
        		#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
        		#define USB_REQ_LOOPBACK_DATA_READ 0x16
        		#define USB_REQ_SET_INTERFACE_DS 0x17
        		
        		#define USB_REQ_GET_PARTNER_PDO 20
        		#define USB_REQ_GET_BATTERY_STATUS 21
        		#define USB_REQ_SET_PDO 22
        		#define USB_REQ_GET_VDM 23
        		#define USB_REQ_SEND_VDM 24
        		
        		#define USB_MAX_IFACE_NUM 4
        		#define USB_MAX_EP_NUM 32
        		#define USB_MAX_FDS 6
        		
        		struct usb_endpoint_index {
        			struct usb_endpoint_descriptor desc;
        			int handle;
        		};
        		
        		struct usb_iface_index {
        			struct usb_interface_descriptor* iface;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bInterfaceClass;
        			struct usb_endpoint_index eps[USB_MAX_EP_NUM];
        			int eps_num;
        		};
        		
        		struct usb_device_index {
        			struct usb_device_descriptor* dev;
        			struct usb_config_descriptor* config;
        			uint8_t bDeviceClass;
        			uint8_t bMaxPower;
        			int config_length;
        			struct usb_iface_index ifaces[USB_MAX_IFACE_NUM];
        			int ifaces_num;
        			int iface_cur;
        		};
        		
        		struct usb_info {
        			int fd;
        			struct usb_device_index index;
        		};
        		
        		static struct usb_info usb_devices[USB_MAX_FDS];
        		static int usb_devices_num;
        		
        		static bool parse_usb_descriptor(const char* buffer, size_t length, struct usb_device_index* index)
        		{
        			if (length < sizeof(*index->dev) + sizeof(*index->config))
        				return false;
        			memset(index, 0, sizeof(*index));
        			index->dev = (struct usb_device_descriptor*)buffer;
        			index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev));
        			index->bDeviceClass = index->dev->bDeviceClass;
        			index->bMaxPower = index->config->bMaxPower;
        			index->config_length = length - sizeof(*index->dev);
        			index->iface_cur = -1;
        			size_t offset = 0;
        			while (true) {
        				if (offset + 1 >= length)
        					break;
        				uint8_t desc_length = buffer[offset];
        				uint8_t desc_type = buffer[offset + 1];
        				if (desc_length <= 2)
        					break;
        				if (offset + desc_length > length)
        					break;
        				if (desc_type == USB_DT_INTERFACE && index->ifaces_num < USB_MAX_IFACE_NUM) {
        					struct usb_interface_descriptor* iface = (struct usb_interface_descriptor*)(buffer + offset);
        					index->ifaces[index->ifaces_num].iface = iface;
        					index->ifaces[index->ifaces_num].bInterfaceNumber = iface->bInterfaceNumber;
        					index->ifaces[index->ifaces_num].bAlternateSetting = iface->bAlternateSetting;
        					index->ifaces[index->ifaces_num].bInterfaceClass = iface->bInterfaceClass;
        					index->ifaces_num++;
        				}
        				if (desc_type == USB_DT_ENDPOINT && index->ifaces_num > 0) {
        					struct usb_iface_index* iface = &index->ifaces[index->ifaces_num - 1];
        					if (iface->eps_num < USB_MAX_EP_NUM) {
        						memcpy(&iface->eps[iface->eps_num].desc, buffer + offset, sizeof(iface->eps[iface->eps_num].desc));
        						iface->eps_num++;
        					}
        				}
        				offset += desc_length;
        			}
        			return true;
        		}
        		
        		static struct usb_device_index* add_usb_index(int fd, const char* dev, size_t dev_len)
        		{
        			int i = __atomic_fetch_add(&usb_devices_num, 1, __ATOMIC_RELAXED);
        			if (i >= USB_MAX_FDS)
        				return NULL;
        			int rv = 0;
        		rv = parse_usb_descriptor(dev, dev_len, &usb_devices[i].index);
        			if (!rv)
        				return NULL;
        			__atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE);
        			return &usb_devices[i].index;
        		}
        		
        		static struct usb_device_index* lookup_usb_index(int fd)
        		{
        			int i;
        			for (i = 0; i < USB_MAX_FDS; i++) {
        				if (__atomic_load_n(&usb_devices[i].fd, __ATOMIC_ACQUIRE) == fd) {
        					return &usb_devices[i].index;
        				}
        			}
        			return NULL;
        		}
        		
        		struct vusb_connect_string_descriptor {
        			uint32_t len;
        			char* str;
        		} __attribute__((packed));
        		
        		struct vusb_connect_descriptors {
        			uint32_t qual_len;
        			char* qual;
        			uint32_t bos_len;
        			char* bos;
        			uint32_t strs_len;
        			struct vusb_connect_string_descriptor strs[0];
        		} __attribute__((packed));
        		
        		static const char default_string[] = {
        		    8, USB_DT_STRING,
        		    's', 0, 'y', 0, 'z', 0
        		};
        		
        		static const char default_lang_id[] = {
        		    4, USB_DT_STRING,
        		    0x09, 0x04
        		};
        		
        		static bool lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs,
        						       const struct usb_ctrlrequest* ctrl,
        						       char** response_data, uint32_t* response_length)
        		{
        			struct usb_device_index* index = lookup_usb_index(fd);
        			uint8_t str_idx;
        			if (!index)
        				return false;
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_GET_DESCRIPTOR:
        					switch (ctrl->wValue >> 8) {
        					case USB_DT_DEVICE:
        						*response_data = (char*)index->dev;
        						*response_length = sizeof(*index->dev);
        						return true;
        					case USB_DT_CONFIG:
        						*response_data = (char*)index->config;
        						*response_length = index->config_length;
        						return true;
        					case USB_DT_STRING:
        						str_idx = (uint8_t)ctrl->wValue;
        						if (descs && str_idx < descs->strs_len) {
        							*response_data = descs->strs[str_idx].str;
        							*response_length = descs->strs[str_idx].len;
        							return true;
        						}
        						if (str_idx == 0) {
        							*response_data = (char*)&default_lang_id[0];
        							*response_length = default_lang_id[0];
        							return true;
        						}
        						*response_data = (char*)&default_string[0];
        						*response_length = default_string[0];
        						return true;
        					case USB_DT_BOS:
        						*response_data = descs->bos;
        						*response_length = descs->bos_len;
        						return true;
        					case USB_DT_DEVICE_QUALIFIER:
        						if (!descs->qual) {
        							struct usb_qualifier_descriptor* qual =
        							    (struct usb_qualifier_descriptor*)response_data;
        							qual->bLength = sizeof(*qual);
        							qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
        							qual->bcdUSB = index->dev->bcdUSB;
        							qual->bDeviceClass = index->dev->bDeviceClass;
        							qual->bDeviceSubClass = index->dev->bDeviceSubClass;
        							qual->bDeviceProtocol = index->dev->bDeviceProtocol;
        							qual->bMaxPacketSize0 = index->dev->bMaxPacketSize0;
        							qual->bNumConfigurations = index->dev->bNumConfigurations;
        							qual->bRESERVED = 0;
        							*response_length = sizeof(*qual);
        							return true;
        						}
        						*response_data = descs->qual;
        						*response_length = descs->qual_len;
        						return true;
        					default:
        						break;
        					}
        					break;
        				default:
        					break;
        				}
        				break;
        			default:
        				break;
        			}
        			return false;
        		}
        		
        		typedef bool (*lookup_connect_out_response_t)(int fd, const struct vusb_connect_descriptors* descs,
        							      const struct usb_ctrlrequest* ctrl, bool* done);
        		
        		static bool lookup_connect_response_out_generic(int fd, const struct vusb_connect_descriptors* descs,
        								const struct usb_ctrlrequest* ctrl, bool* done)
        		{
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_SET_CONFIGURATION:
        					*done = true;
        					return true;
        				default:
        					break;
        				}
        				break;
        			}
        			return false;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static int vhci_open(void)
        		{
        			return open("/dev/vhci", O_RDWR);
        		}
        		
        		static int vhci_setport(int fd, u_int port)
        		{
        			struct vhci_ioc_set_port args;
        			args.port = port;
        			return ioctl(fd, VHCI_IOC_SET_PORT, &args);
        		}
        		
        		static int vhci_usb_attach(int fd)
        		{
        			return ioctl(fd, VHCI_IOC_USB_ATTACH, NULL);
        		}
        		
        		static int vhci_usb_recv(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = read(fd, ptr, size);
        				if (done < 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		static int vhci_usb_send(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = write(fd, ptr, size);
        				if (done <= 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static volatile long syz_usb_connect_impl(uint64_t speed, uint64_t dev_len,
        							  const char* dev, const struct vusb_connect_descriptors* descs,
        							  lookup_connect_out_response_t lookup_connect_response_out)
        		{
        			struct usb_device_index* index;
        			int portnum, fd, rv;
        			bool done;
        			portnum = procid + 1;
        			if (!dev) {
        				return -1;
        			}
        			if (portnum != 1) {
        				/* For now, we support only one proc. */
        				return -1;
        			}
        			fd = vhci_open();
        			if (fd < 0) {
        				return -1;
        			}
        			index = add_usb_index(fd, dev, dev_len);
        			if (!index) {
        				goto err;
        			}
        			rv = vhci_setport(fd, portnum);
        			if (rv != 0) {
        				goto err;
        			}
        			rv = vhci_usb_attach(fd);
        			if (rv != 0) {
        				goto err;
        			}
        			done = false;
        			while (!done) {
        				vhci_request_t req;
        				rv = vhci_usb_recv(fd, &req, sizeof(req));
        				if (rv != 0) {
        					goto err;
        				}
        				if (req.type != VHCI_REQ_CTRL) {
        					goto err;
        				}
        				char* response_data = NULL;
        				uint32_t response_length = 0;
        				char data[4096];
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					bool response_found = false;
        		response_found = lookup_connect_response_in(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &response_data, &response_length);
        					if (!response_found) {
        						goto err;
        					}
        				} else {
        					if (!lookup_connect_response_out(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &done)) {
        						goto err;
        					}
        					response_data = NULL;
        					response_length = UGETW(req.u.ctrl.wLength);
        				}
        				if ((req.u.ctrl.bmRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        				    req.u.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
        					/* TODO: possibly revisit */
        				}
        				if (response_length > sizeof(data))
        					response_length = 0;
        				if ((uint32_t)UGETW(req.u.ctrl.wLength) < response_length)
        					response_length = UGETW(req.u.ctrl.wLength);
        				if (response_data)
        					memcpy(data, response_data, response_length);
        				else
        					memset(data, 0, response_length);
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					if (response_length > 0) {
        						vhci_response_t res;
        						res.size = response_length;
        						rv = vhci_usb_send(fd, &res, sizeof(res));
        						if (rv == 0)
        							rv = vhci_usb_send(fd, data, response_length);
        					}
        				} else {
        					rv = vhci_usb_recv(fd, data, response_length);
        				}
        				if (rv < 0) {
        					goto err;
        				}
        			}
        			sleep_ms(200);
        			return fd;
        		
        		err:
        			close(fd);
        			return -1;
        		}
        		
        		static volatile long syz_usb_connect(volatile long a0, volatile long a1,
        						     volatile long a2, volatile long a3)
        		{
        			uint64_t speed = a0;
        			uint64_t dev_len = a1;
        			const char* dev = (const char*)a2;
        			const struct vusb_connect_descriptors* descs = (const struct vusb_connect_descriptors*)a3;
        			return syz_usb_connect_impl(speed, dev_len, dev, descs,
        						    &lookup_connect_response_out_generic);
        		}
        		
        		static volatile long syz_usb_disconnect(volatile long a0)
        		{
        			int fd = a0;
        			int rv = close(fd);
        			sleep_ms(200);
        			return rv;
        		}
        		
        		static void sandbox_common()
        		{
        			if (setsid() == -1)
        			exit(1);
        			struct rlimit rlim;
        			rlim.rlim_cur = rlim.rlim_max = 8 << 20;
        			setrlimit(RLIMIT_MEMLOCK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_FSIZE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 1 << 20;
        			setrlimit(RLIMIT_STACK, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 0;
        			setrlimit(RLIMIT_CORE, &rlim);
        			rlim.rlim_cur = rlim.rlim_max = 256;
        			setrlimit(RLIMIT_NOFILE, &rlim);
        		}
        		
        		static void loop();
        		
        		static int do_sandbox_none(void)
        		{
        			sandbox_common();
        			loop();
        			return 0;
        		}
        		
        		static long syz_execute_func(volatile long text)
        		{
        			volatile long p[8] = {0};
        			(void)p;
        			asm volatile("" ::"r"(0l), "r"(1l), "r"(2l), "r"(3l), "r"(4l), "r"(5l), "r"(6l),
        				     "r"(7l), "r"(8l), "r"(9l), "r"(10l), "r"(11l), "r"(12l), "r"(13l));
        		((void (*)(void))(text))();
        			return 0;
        		}
        		
        		struct thread_t {
        			int created, call;
        			event_t ready, done;
        		};
        		
        		static struct thread_t threads[16];
        		static void execute_call(int call);
        		static int running;
        		
        		static void* thr(void* arg)
        		{
        			struct thread_t* th = (struct thread_t*)arg;
        			for (;;) {
        				event_wait(&th->ready);
        				event_reset(&th->ready);
        				execute_call(th->call);
        				__atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
        				event_set(&th->done);
        			}
        			return 0;
        		}
        		
        		static void execute_one(void)
        		{
        			int i, call, thread;
        			for (call = 0; call < 15; call++) {
        				for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) {
        					struct thread_t* th = &threads[thread];
        					if (!th->created) {
        						th->created = 1;
        						event_init(&th->ready);
        						event_init(&th->done);
        						event_set(&th->done);
        						thread_start(thr, th);
        					}
        					if (!event_isset(&th->done))
        						continue;
        					event_reset(&th->done);
        					th->call = call;
        					__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        					event_set(&th->ready);
        					event_timedwait(&th->done, 45 + (call == 13 ? 3000 : 0) + (call == 14 ? 300 : 0));
        					break;
        				}
        			}
        			for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
        				sleep_ms(1);
        		}
        		
        		static void execute_one(void);
        		
        		#define WAIT_FLAGS 0
        		
        		static void loop(void)
        		{
        			int iter;
        			for (iter = 0;; iter++) {
        				char cwdbuf[32];
        				sprintf(cwdbuf, "./%d", iter);
        				if (mkdir(cwdbuf, 0777))
        			exit(1);
        				int pid = fork();
        				if (pid < 0)
        			exit(1);
        				if (pid == 0) {
        					if (chdir(cwdbuf))
        			exit(1);
        					execute_one();
        					exit(0);
        				}
        				int status = 0;
        				uint64_t start = current_time_ms();
        				for (;;) {
        					if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        						break;
        					sleep_ms(1);
        					if (current_time_ms() - start < 5 * 1000)
        						continue;
        					kill_and_wait(pid, &status);
        					break;
        				}
        				remove_dir(cwdbuf);
        			}
        		}
        		
        		#ifndef SYS_access
        		#define SYS_access 33
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_lseek
        		#define SYS_lseek 199
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_shmctl
        		#define SYS_shmctl 443
        		#endif
        		#ifndef SYS_shmget
        		#define SYS_shmget 231
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_socketpair
        		#define SYS_socketpair 135
        		#endif
        		
        		uint64_t r[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_socketpair, 1ul, 1ul, 0, 0x20000000ul);
        				if (res != -1) {
        		r[0] = *(uint32_t*)0x20000000;
        		r[1] = *(uint32_t*)0x20000004;
        				}
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = 8;
        				syscall(SYS_getpeername, r[1], 0x20000040ul, 0x20000080ul);
        				break;
        			case 2:
        				syscall(SYS_lseek, r[0], 5ul, 1ul);
        				break;
        			case 3:
        		memcpy((void*)0x200000c0, "./file0\000", 8);
        				syscall(SYS_access, 0x200000c0ul, 2ul);
        				break;
        			case 4:
        				res = syscall(SYS_socket, 1ul, 1ul, 0);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 5:
        		*(uint64_t*)0x200014c0 = 0x20000100;
        		*(uint32_t*)0x200014c8 = 0xc;
        		*(uint64_t*)0x200014d0 = 0x20001340;
        		*(uint64_t*)0x20001340 = 0x20000140;
        		*(uint64_t*)0x20001348 = 0x4d;
        		*(uint64_t*)0x20001350 = 0x200001c0;
        		*(uint64_t*)0x20001358 = 0x8d;
        		*(uint64_t*)0x20001360 = 0x20000280;
        		*(uint64_t*)0x20001368 = 0x25;
        		*(uint64_t*)0x20001370 = 0x200002c0;
        		*(uint64_t*)0x20001378 = 0x1000;
        		*(uint64_t*)0x20001380 = 0x200012c0;
        		*(uint64_t*)0x20001388 = 0x5f;
        		*(uint64_t*)0x200014d8 = 5;
        		*(uint64_t*)0x200014e0 = 0x200013c0;
        		*(uint64_t*)0x200014e8 = 0xd8;
        		*(uint32_t*)0x200014f0 = 0;
        				syscall(SYS_recvmsg, r[2], 0x200014c0ul, 0x40ul);
        				break;
        			case 6:
        				res = syscall(SYS_shmget, 0x798dd814ul + procid*4, 0x3000ul, 0x60ul, 0x20ffc000ul);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 7:
        				syscall(SYS_shmctl, r[3], 4ul, 0);
        				break;
        			case 8:
        				res = syscall(SYS_socket, 0x18ul, 5ul, 0x3e);
        				if (res != -1)
        						r[4] = res;
        				break;
        			case 9:
        				syscall(SYS_mmap, 0x20ffd000ul, 0x2000ul, 1ul, 0x210ul, r[4], 0ul, 0x100000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\x5e\xca\xd8\xbb\x62\x7a\x3a\x76\x50\x4a\xd2\xe0\x3a\x19\x6c\x8c\x75\xbb\xf9\x78\xbb\xa9\x8c\x2d\xf5\xe2\x6a\x5d\x25\xf8\x4e\x08\x3d\xe8\xf2\x7b\x7f\xfe\xda\x58\x1b\x9a\xdc\x9a\xae\xeb\x97\xdb\x43\x38\x22\xdb\xbb\xf3\xa9\x00\x27\x38\x4a\xbb\x2e\x61\x43\x27\xb7\xdd\xd4\xbc\xbb\x87\x04\xd5\x75\x56\x3b\x2e\xcc\x9b\x13\xeb\xcc\x1d\x5f\x0a\xd4\xfd\x25\x0a\x79\xa3\x98\x3b\x54\x05\xaa\xe0\x36\x55\x03\x0e\x16\x0b\x22\xa6\x61\xf0\x1c\xab\xaa\xf0\xfe\x28\xfd\xed\x43\xed\xee\xea\xba\x8e\x29\xe7\xa5\x5e\xd1\x60", 126);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\x41\xb3\x7d\x67\x16\xc4\xc1\x19\x5d\x3c\xc4\x63\xa6\xf6\xb3\x86\x5f\x64\x64\x40\x0f\x91\xfc\xc4\x02\xb5\x8e\x45\x0c\xd3\x10\xfa\xf2\x0f\x2b\x31\xc4\xc1\xed\xdd\x69\x0b\xc4\xc2\x0d\x0c\xd1", 48);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000100, "\x00\x30\x4f\xf9\x82\x3a\x61\x45\xaf\xcf\xab\xe5\x9e\x7b\x44\x8a\xf5\x19\x13\x09\x95\x66\xd6\xb4\x99\x44\x63\xd5\x2f\xf7\x0c\x87\xd9\x5b\xd6\x58\xf3\x13\xdd\x8f\x6e\xf2\xae\x26\xb1\x30\xa2\x96\xec\x42\x60\x64\xb7\x96\x66\x1a\x0a", 57);
        		memcpy((void*)0x20000140, "\x8e\xb1\x2c\x0b\x12\xb9\xe8\x10\x70\x0f\x13\xd7\x30\x40\x08\x7e\x8a\x51\xc0\xe0\x50\x46\x23\xd6\x84\x34\x51\xcc\xdf\xfc\xe9", 31);
        				res = syz_usb_connect(0x374, 0x39, 0x20000100, 0x20000140);
        				if (res != -1)
        						r[5] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[5]);
        				break;
        			}
        		
        		}
        		int main(void)
        		{
        				syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul);
        			for (procid = 0; procid < 4; procid++) {
        				if (fork() == 0) {
        					use_temporary_dir();
        					do_sandbox_none();
        				}
        			}
        			sleep(1000000);
        			return 0;
        		}
        		
        		<stdin>: In function 'syz_usb_connect_impl':
        		<stdin>:637:63: error: unknown type name 'usb_ctrlrequest'
        		<stdin>:642:55: error: unknown type name 'usb_ctrlrequest'
        		
        		compiler invocation: /syzkaller/netbsd/src/../tools/bin/x86_64--netbsd-g++ [-o /tmp/syz-executor104018308 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/7 (0.18s)
        	csource_test.go:123: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Sandbox: Fault:false FaultCall:0 FaultNth:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false UseTmpDir:true HandleSegv:false Repro:false Trace:false}
        		program:
        		socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000000)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
        		getpeername$unix(r1, &(0x7f0000000040)=@abs, &(0x7f0000000080)=0x8)
        		lseek(r0, 0x5, 0x1)
        		access(&(0x7f00000000c0)='./file0\x00', 0x2)
        		r2 = socket$unix(0x1, 0x1, 0x0)
        		recvmsg(r2, &(0x7f00000014c0)={&(0x7f0000000100)=@in6, 0xc, &(0x7f0000001340)=[{&(0x7f0000000140)=""/77, 0x4d}, {&(0x7f00000001c0)=""/141, 0x8d}, {&(0x7f0000000280)=""/37, 0x25}, {&(0x7f00000002c0)=""/4096, 0x1000}, {&(0x7f00000012c0)=""/95, 0x5f}], 0x5, &(0x7f00000013c0)=""/216, 0xd8}, 0x40)
        		r3 = shmget(0x1, 0x3000, 0x60, &(0x7f0000ffc000/0x3000)=nil)
        		shmctl$SHM_UNLOCK(r3, 0x4)
        		r4 = socket$inet6(0x18, 0x5, 0x3e)
        		mmap(&(0x7f0000ffd000/0x2000)=nil, 0x2000, 0x1, 0x210, r4, 0x0, 0x100000000)
        		syz_emit_ethernet(0x7e, &(0x7f0000000000)="5ecad8bb627a3a76504ad2e03a196c8c75bbf978bba98c2df5e26a5d25f84e083de8f27b7ffeda581b9adc9aaeeb97db433822dbbbf3a90027384abb2e614327b7ddd4bcbb8704d575563b2ecc9b13ebcc1d5f0ad4fd250a79a3983b5405aae03655030e160b22a661f01cabaaf0fe28fded43edeeeaba8e29e7a55ed160")
        		syz_execute_func(&(0x7f0000000080)="c441b37d6716c4c1195d3cc463a6f6b3865f6464400f91fcc402b58e450cd310faf20f2b31c4c1eddd690bc4c20d0cd1")
        		syz_extract_tcp_res(&(0x7f00000000c0), 0x7, 0x2)
        		r5 = syz_usb_connect(0x374, 0x39, &(0x7f0000000100)="00304ff9823a6145afcfabe59e7b448af51913099566d6b4994463d52ff70c87d95bd658f313dd8f6ef2ae26b130a296ec426064b796661a0a", &(0x7f0000000140)="8eb12c0b12b9e810700f13d73040087e8a51c0e0504623d6843451ccdffce9")
        		syz_usb_disconnect(r5)
        		
        	csource_test.go:124: failed to build program:
        		// autogenerated by syzkaller (https://github.com/google/syzkaller)
        		
        		#define _GNU_SOURCE 
        		
        		#include <dev/usb/usb.h>
        		#include <dev/usb/usbhid.h>
        		#include <dev/usb/vhci.h>
        		#include <dirent.h>
        		#include <endian.h>
        		#include <errno.h>
        		#include <fcntl.h>
        		#include <pthread.h>
        		#include <pwd.h>
        		#include <signal.h>
        		#include <stdarg.h>
        		#include <stdbool.h>
        		#include <stdint.h>
        		#include <stdio.h>
        		#include <stdlib.h>
        		#include <string.h>
        		#include <sys/ioctl.h>
        		#include <sys/stat.h>
        		#include <sys/syscall.h>
        		#include <sys/types.h>
        		#include <sys/wait.h>
        		#include <time.h>
        		#include <unistd.h>
        		
        		static unsigned long long procid;
        		
        		static void kill_and_wait(int pid, int* status)
        		{
        			kill(pid, SIGKILL);
        			while (waitpid(-1, status, 0) != pid) {
        			}
        		}
        		
        		static void sleep_ms(uint64_t ms)
        		{
        			usleep(ms * 1000);
        		}
        		
        		static uint64_t current_time_ms(void)
        		{
        			struct timespec ts;
        			if (clock_gettime(CLOCK_MONOTONIC, &ts))
        			exit(1);
        			return (uint64_t)ts.tv_sec * 1000 + (uint64_t)ts.tv_nsec / 1000000;
        		}
        		
        		static void use_temporary_dir(void)
        		{
        			char tmpdir_template[] = "./syzkaller.XXXXXX";
        			char* tmpdir = mkdtemp(tmpdir_template);
        			if (!tmpdir)
        			exit(1);
        			if (chmod(tmpdir, 0777))
        			exit(1);
        			if (chdir(tmpdir))
        			exit(1);
        		}
        		
        		static void remove_dir(const char* dir)
        		{
        			DIR* dp;
        			struct dirent* ep;
        			dp = opendir(dir);
        			if (dp == NULL)
        			exit(1);
        			while ((ep = readdir(dp))) {
        				if (strcmp(ep->d_name, ".") == 0 || strcmp(ep->d_name, "..") == 0)
        					continue;
        				char filename[FILENAME_MAX];
        				snprintf(filename, sizeof(filename), "%s/%s", dir, ep->d_name);
        				struct stat st;
        				if (lstat(filename, &st))
        			exit(1);
        				if (S_ISDIR(st.st_mode)) {
        					remove_dir(filename);
        					continue;
        				}
        				if (unlink(filename))
        			exit(1);
        			}
        			closedir(dp);
        			if (rmdir(dir))
        			exit(1);
        		}
        		
        		static void thread_start(void* (*fn)(void*), void* arg)
        		{
        			pthread_t th;
        			pthread_attr_t attr;
        			pthread_attr_init(&attr);
        			pthread_attr_setstacksize(&attr, 128 << 10);
        			int i;
        			for (i = 0; i < 100; i++) {
        				if (pthread_create(&th, &attr, fn, arg) == 0) {
        					pthread_attr_destroy(&attr);
        					return;
        				}
        				if (errno == EAGAIN) {
        					usleep(50);
        					continue;
        				}
        				break;
        			}
        			exit(1);
        		}
        		
        		typedef struct {
        			pthread_mutex_t mu;
        			pthread_cond_t cv;
        			int state;
        		} event_t;
        		
        		static void event_init(event_t* ev)
        		{
        			if (pthread_mutex_init(&ev->mu, 0))
        			exit(1);
        			if (pthread_cond_init(&ev->cv, 0))
        			exit(1);
        			ev->state = 0;
        		}
        		
        		static void event_reset(event_t* ev)
        		{
        			ev->state = 0;
        		}
        		
        		static void event_set(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			if (ev->state)
        			exit(1);
        			ev->state = 1;
        			pthread_mutex_unlock(&ev->mu);
        			pthread_cond_broadcast(&ev->cv);
        		}
        		
        		static void event_wait(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			while (!ev->state)
        				pthread_cond_wait(&ev->cv, &ev->mu);
        			pthread_mutex_unlock(&ev->mu);
        		}
        		
        		static int event_isset(event_t* ev)
        		{
        			pthread_mutex_lock(&ev->mu);
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		static int event_timedwait(event_t* ev, uint64_t timeout)
        		{
        			uint64_t start = current_time_ms();
        			uint64_t now = start;
        			pthread_mutex_lock(&ev->mu);
        			for (;;) {
        				if (ev->state)
        					break;
        				uint64_t remain = timeout - (now - start);
        				struct timespec ts;
        				ts.tv_sec = remain / 1000;
        				ts.tv_nsec = (remain % 1000) * 1000 * 1000;
        				pthread_cond_timedwait(&ev->cv, &ev->mu, &ts);
        				now = current_time_ms();
        				if (now - start > timeout)
        					break;
        			}
        			int res = ev->state;
        			pthread_mutex_unlock(&ev->mu);
        			return res;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		/*
        		 * Redefinitions to match the linux types used in common_usb.h.
        		 */
        		
        		struct usb_endpoint_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bEndpointAddress;
        			uint8_t bmAttributes;
        			uint16_t wMaxPacketSize;
        			uint8_t bInterval;
        			uint8_t bRefresh;
        			uint8_t bSynchAddress;
        		} __attribute__((packed));
        		
        		struct usb_device_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint16_t idVendor;
        			uint16_t idProduct;
        			uint16_t bcdDevice;
        			uint8_t iManufacturer;
        			uint8_t iProduct;
        			uint8_t iSerialNumber;
        			uint8_t bNumConfigurations;
        		} __attribute__((packed));
        		
        		struct usb_config_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t wTotalLength;
        			uint8_t bNumInterfaces;
        			uint8_t bConfigurationValue;
        			uint8_t iConfiguration;
        			uint8_t bmAttributes;
        			uint8_t bMaxPower;
        		} __attribute__((packed));
        		
        		struct usb_interface_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bNumEndpoints;
        			uint8_t bInterfaceClass;
        			uint8_t bInterfaceSubClass;
        			uint8_t bInterfaceProtocol;
        			uint8_t iInterface;
        		} __attribute__((packed));
        		
        		struct usb_ctrlrequest {
        			uint8_t bRequestType;
        			uint8_t bRequest;
        			uint16_t wValue;
        			uint16_t wIndex;
        			uint16_t wLength;
        		} __attribute__((packed));
        		
        		struct usb_qualifier_descriptor {
        			uint8_t bLength;
        			uint8_t bDescriptorType;
        			uint16_t bcdUSB;
        			uint8_t bDeviceClass;
        			uint8_t bDeviceSubClass;
        			uint8_t bDeviceProtocol;
        			uint8_t bMaxPacketSize0;
        			uint8_t bNumConfigurations;
        			uint8_t bRESERVED;
        		} __attribute__((packed));
        		
        		#define USB_TYPE_MASK (0x03 << 5)
        		#define USB_TYPE_STANDARD (0x00 << 5)
        		#define USB_TYPE_CLASS (0x01 << 5)
        		#define USB_TYPE_VENDOR (0x02 << 5)
        		#define USB_TYPE_RESERVED (0x03 << 5)
        		
        		#define USB_DT_DEVICE 0x01
        		#define USB_DT_CONFIG 0x02
        		#define USB_DT_STRING 0x03
        		#define USB_DT_INTERFACE 0x04
        		#define USB_DT_ENDPOINT 0x05
        		#define USB_DT_DEVICE_QUALIFIER 0x06
        		#define USB_DT_OTHER_SPEED_CONFIG 0x07
        		#define USB_DT_INTERFACE_POWER 0x08
        		#define USB_DT_OTG 0x09
        		#define USB_DT_DEBUG 0x0a
        		#define USB_DT_INTERFACE_ASSOCIATION 0x0b
        		#define USB_DT_SECURITY 0x0c
        		#define USB_DT_KEY 0x0d
        		#define USB_DT_ENCRYPTION_TYPE 0x0e
        		#define USB_DT_BOS 0x0f
        		#define USB_DT_DEVICE_CAPABILITY 0x10
        		#define USB_DT_WIRELESS_ENDPOINT_COMP 0x11
        		#define USB_DT_WIRE_ADAPTER 0x21
        		#define USB_DT_RPIPE 0x22
        		#define USB_DT_CS_RADIO_CONTROL 0x23
        		#define USB_DT_PIPE_USAGE 0x24
        		#define USB_DT_SS_ENDPOINT_COMP 0x30
        		#define USB_DT_SSP_ISOC_ENDPOINT_COMP 0x31
        		
        		#define USB_REQ_GET_STATUS 0x00
        		#define USB_REQ_CLEAR_FEATURE 0x01
        		#define USB_REQ_SET_FEATURE 0x03
        		#define USB_REQ_SET_ADDRESS 0x05
        		#define USB_REQ_GET_DESCRIPTOR 0x06
        		#define USB_REQ_SET_DESCRIPTOR 0x07
        		#define USB_REQ_GET_CONFIGURATION 0x08
        		#define USB_REQ_SET_CONFIGURATION 0x09
        		#define USB_REQ_GET_INTERFACE 0x0A
        		#define USB_REQ_SET_INTERFACE 0x0B
        		#define USB_REQ_SYNCH_FRAME 0x0C
        		#define USB_REQ_SET_SEL 0x30
        		#define USB_REQ_SET_ISOCH_DELAY 0x31
        		
        		#define USB_REQ_SET_ENCRYPTION 0x0D
        		#define USB_REQ_GET_ENCRYPTION 0x0E
        		#define USB_REQ_RPIPE_ABORT 0x0E
        		#define USB_REQ_SET_HANDSHAKE 0x0F
        		#define USB_REQ_RPIPE_RESET 0x0F
        		#define USB_REQ_GET_HANDSHAKE 0x10
        		#define USB_REQ_SET_CONNECTION 0x11
        		#define USB_REQ_SET_SECURITY_DATA 0x12
        		#define USB_REQ_GET_SECURITY_DATA 0x13
        		#define USB_REQ_SET_WUSB_DATA 0x14
        		#define USB_REQ_LOOPBACK_DATA_WRITE 0x15
        		#define USB_REQ_LOOPBACK_DATA_READ 0x16
        		#define USB_REQ_SET_INTERFACE_DS 0x17
        		
        		#define USB_REQ_GET_PARTNER_PDO 20
        		#define USB_REQ_GET_BATTERY_STATUS 21
        		#define USB_REQ_SET_PDO 22
        		#define USB_REQ_GET_VDM 23
        		#define USB_REQ_SEND_VDM 24
        		
        		#define USB_MAX_IFACE_NUM 4
        		#define USB_MAX_EP_NUM 32
        		#define USB_MAX_FDS 6
        		
        		struct usb_endpoint_index {
        			struct usb_endpoint_descriptor desc;
        			int handle;
        		};
        		
        		struct usb_iface_index {
        			struct usb_interface_descriptor* iface;
        			uint8_t bInterfaceNumber;
        			uint8_t bAlternateSetting;
        			uint8_t bInterfaceClass;
        			struct usb_endpoint_index eps[USB_MAX_EP_NUM];
        			int eps_num;
        		};
        		
        		struct usb_device_index {
        			struct usb_device_descriptor* dev;
        			struct usb_config_descriptor* config;
        			uint8_t bDeviceClass;
        			uint8_t bMaxPower;
        			int config_length;
        			struct usb_iface_index ifaces[USB_MAX_IFACE_NUM];
        			int ifaces_num;
        			int iface_cur;
        		};
        		
        		struct usb_info {
        			int fd;
        			struct usb_device_index index;
        		};
        		
        		static struct usb_info usb_devices[USB_MAX_FDS];
        		static int usb_devices_num;
        		
        		static bool parse_usb_descriptor(const char* buffer, size_t length, struct usb_device_index* index)
        		{
        			if (length < sizeof(*index->dev) + sizeof(*index->config))
        				return false;
        			memset(index, 0, sizeof(*index));
        			index->dev = (struct usb_device_descriptor*)buffer;
        			index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev));
        			index->bDeviceClass = index->dev->bDeviceClass;
        			index->bMaxPower = index->config->bMaxPower;
        			index->config_length = length - sizeof(*index->dev);
        			index->iface_cur = -1;
        			size_t offset = 0;
        			while (true) {
        				if (offset + 1 >= length)
        					break;
        				uint8_t desc_length = buffer[offset];
        				uint8_t desc_type = buffer[offset + 1];
        				if (desc_length <= 2)
        					break;
        				if (offset + desc_length > length)
        					break;
        				if (desc_type == USB_DT_INTERFACE && index->ifaces_num < USB_MAX_IFACE_NUM) {
        					struct usb_interface_descriptor* iface = (struct usb_interface_descriptor*)(buffer + offset);
        					index->ifaces[index->ifaces_num].iface = iface;
        					index->ifaces[index->ifaces_num].bInterfaceNumber = iface->bInterfaceNumber;
        					index->ifaces[index->ifaces_num].bAlternateSetting = iface->bAlternateSetting;
        					index->ifaces[index->ifaces_num].bInterfaceClass = iface->bInterfaceClass;
        					index->ifaces_num++;
        				}
        				if (desc_type == USB_DT_ENDPOINT && index->ifaces_num > 0) {
        					struct usb_iface_index* iface = &index->ifaces[index->ifaces_num - 1];
        					if (iface->eps_num < USB_MAX_EP_NUM) {
        						memcpy(&iface->eps[iface->eps_num].desc, buffer + offset, sizeof(iface->eps[iface->eps_num].desc));
        						iface->eps_num++;
        					}
        				}
        				offset += desc_length;
        			}
        			return true;
        		}
        		
        		static struct usb_device_index* add_usb_index(int fd, const char* dev, size_t dev_len)
        		{
        			int i = __atomic_fetch_add(&usb_devices_num, 1, __ATOMIC_RELAXED);
        			if (i >= USB_MAX_FDS)
        				return NULL;
        			int rv = 0;
        		rv = parse_usb_descriptor(dev, dev_len, &usb_devices[i].index);
        			if (!rv)
        				return NULL;
        			__atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE);
        			return &usb_devices[i].index;
        		}
        		
        		static struct usb_device_index* lookup_usb_index(int fd)
        		{
        			int i;
        			for (i = 0; i < USB_MAX_FDS; i++) {
        				if (__atomic_load_n(&usb_devices[i].fd, __ATOMIC_ACQUIRE) == fd) {
        					return &usb_devices[i].index;
        				}
        			}
        			return NULL;
        		}
        		
        		struct vusb_connect_string_descriptor {
        			uint32_t len;
        			char* str;
        		} __attribute__((packed));
        		
        		struct vusb_connect_descriptors {
        			uint32_t qual_len;
        			char* qual;
        			uint32_t bos_len;
        			char* bos;
        			uint32_t strs_len;
        			struct vusb_connect_string_descriptor strs[0];
        		} __attribute__((packed));
        		
        		static const char default_string[] = {
        		    8, USB_DT_STRING,
        		    's', 0, 'y', 0, 'z', 0
        		};
        		
        		static const char default_lang_id[] = {
        		    4, USB_DT_STRING,
        		    0x09, 0x04
        		};
        		
        		static bool lookup_connect_response_in(int fd, const struct vusb_connect_descriptors* descs,
        						       const struct usb_ctrlrequest* ctrl,
        						       char** response_data, uint32_t* response_length)
        		{
        			struct usb_device_index* index = lookup_usb_index(fd);
        			uint8_t str_idx;
        			if (!index)
        				return false;
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_GET_DESCRIPTOR:
        					switch (ctrl->wValue >> 8) {
        					case USB_DT_DEVICE:
        						*response_data = (char*)index->dev;
        						*response_length = sizeof(*index->dev);
        						return true;
        					case USB_DT_CONFIG:
        						*response_data = (char*)index->config;
        						*response_length = index->config_length;
        						return true;
        					case USB_DT_STRING:
        						str_idx = (uint8_t)ctrl->wValue;
        						if (descs && str_idx < descs->strs_len) {
        							*response_data = descs->strs[str_idx].str;
        							*response_length = descs->strs[str_idx].len;
        							return true;
        						}
        						if (str_idx == 0) {
        							*response_data = (char*)&default_lang_id[0];
        							*response_length = default_lang_id[0];
        							return true;
        						}
        						*response_data = (char*)&default_string[0];
        						*response_length = default_string[0];
        						return true;
        					case USB_DT_BOS:
        						*response_data = descs->bos;
        						*response_length = descs->bos_len;
        						return true;
        					case USB_DT_DEVICE_QUALIFIER:
        						if (!descs->qual) {
        							struct usb_qualifier_descriptor* qual =
        							    (struct usb_qualifier_descriptor*)response_data;
        							qual->bLength = sizeof(*qual);
        							qual->bDescriptorType = USB_DT_DEVICE_QUALIFIER;
        							qual->bcdUSB = index->dev->bcdUSB;
        							qual->bDeviceClass = index->dev->bDeviceClass;
        							qual->bDeviceSubClass = index->dev->bDeviceSubClass;
        							qual->bDeviceProtocol = index->dev->bDeviceProtocol;
        							qual->bMaxPacketSize0 = index->dev->bMaxPacketSize0;
        							qual->bNumConfigurations = index->dev->bNumConfigurations;
        							qual->bRESERVED = 0;
        							*response_length = sizeof(*qual);
        							return true;
        						}
        						*response_data = descs->qual;
        						*response_length = descs->qual_len;
        						return true;
        					default:
        						break;
        					}
        					break;
        				default:
        					break;
        				}
        				break;
        			default:
        				break;
        			}
        			return false;
        		}
        		
        		typedef bool (*lookup_connect_out_response_t)(int fd, const struct vusb_connect_descriptors* descs,
        							      const struct usb_ctrlrequest* ctrl, bool* done);
        		
        		static bool lookup_connect_response_out_generic(int fd, const struct vusb_connect_descriptors* descs,
        								const struct usb_ctrlrequest* ctrl, bool* done)
        		{
        			switch (ctrl->bRequestType & USB_TYPE_MASK) {
        			case USB_TYPE_STANDARD:
        				switch (ctrl->bRequest) {
        				case USB_REQ_SET_CONFIGURATION:
        					*done = true;
        					return true;
        				default:
        					break;
        				}
        				break;
        			}
        			return false;
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static int vhci_open(void)
        		{
        			return open("/dev/vhci", O_RDWR);
        		}
        		
        		static int vhci_setport(int fd, u_int port)
        		{
        			struct vhci_ioc_set_port args;
        			args.port = port;
        			return ioctl(fd, VHCI_IOC_SET_PORT, &args);
        		}
        		
        		static int vhci_usb_attach(int fd)
        		{
        			return ioctl(fd, VHCI_IOC_USB_ATTACH, NULL);
        		}
        		
        		static int vhci_usb_recv(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = read(fd, ptr, size);
        				if (done < 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		static int vhci_usb_send(int fd, void* buf, size_t size)
        		{
        			uint8_t* ptr = (uint8_t*)buf;
        			ssize_t done;
        			while (1) {
        				done = write(fd, ptr, size);
        				if (done <= 0)
        					return -1;
        				if ((size_t)done == size)
        					return 0;
        				size -= done;
        				ptr += done;
        			}
        		}
        		
        		/* -------------------------------------------------------------------------- */
        		
        		static volatile long syz_usb_connect_impl(uint64_t speed, uint64_t dev_len,
        							  const char* dev, const struct vusb_connect_descriptors* descs,
        							  lookup_connect_out_response_t lookup_connect_response_out)
        		{
        			struct usb_device_index* index;
        			int portnum, fd, rv;
        			bool done;
        			portnum = procid + 1;
        			if (!dev) {
        				return -1;
        			}
        			if (portnum != 1) {
        				/* For now, we support only one proc. */
        				return -1;
        			}
        			fd = vhci_open();
        			if (fd < 0) {
        				return -1;
        			}
        			index = add_usb_index(fd, dev, dev_len);
        			if (!index) {
        				goto err;
        			}
        			rv = vhci_setport(fd, portnum);
        			if (rv != 0) {
        				goto err;
        			}
        			rv = vhci_usb_attach(fd);
        			if (rv != 0) {
        				goto err;
        			}
        			done = false;
        			while (!done) {
        				vhci_request_t req;
        				rv = vhci_usb_recv(fd, &req, sizeof(req));
        				if (rv != 0) {
        					goto err;
        				}
        				if (req.type != VHCI_REQ_CTRL) {
        					goto err;
        				}
        				char* response_data = NULL;
        				uint32_t response_length = 0;
        				char data[4096];
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					bool response_found = false;
        		response_found = lookup_connect_response_in(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &response_data, &response_length);
        					if (!response_found) {
        						goto err;
        					}
        				} else {
        					if (!lookup_connect_response_out(fd, descs, (const usb_ctrlrequest*)&req.u.ctrl, &done)) {
        						goto err;
        					}
        					response_data = NULL;
        					response_length = UGETW(req.u.ctrl.wLength);
        				}
        				if ((req.u.ctrl.bmRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD &&
        				    req.u.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) {
        					/* TODO: possibly revisit */
        				}
        				if (response_length > sizeof(data))
        					response_length = 0;
        				if ((uint32_t)UGETW(req.u.ctrl.wLength) < response_length)
        					response_length = UGETW(req.u.ctrl.wLength);
        				if (response_data)
        					memcpy(data, response_data, response_length);
        				else
        					memset(data, 0, response_length);
        				if (req.u.ctrl.bmRequestType & UE_DIR_IN) {
        					if (response_length > 0) {
        						vhci_response_t res;
        						res.size = response_length;
        						rv = vhci_usb_send(fd, &res, sizeof(res));
        						if (rv == 0)
        							rv = vhci_usb_send(fd, data, response_length);
        					}
        				} else {
        					rv = vhci_usb_recv(fd, data, response_length);
        				}
        				if (rv < 0) {
        					goto err;
        				}
        			}
        			sleep_ms(200);
        			return fd;
        		
        		err:
        			close(fd);
        			return -1;
        		}
        		
        		static volatile long syz_usb_connect(volatile long a0, volatile long a1,
        						     volatile long a2, volatile long a3)
        		{
        			uint64_t speed = a0;
        			uint64_t dev_len = a1;
        			const char* dev = (const char*)a2;
        			const struct vusb_connect_descriptors* descs = (const struct vusb_connect_descriptors*)a3;
        			return syz_usb_connect_impl(speed, dev_len, dev, descs,
        						    &lookup_connect_response_out_generic);
        		}
        		
        		static volatile long syz_usb_disconnect(volatile long a0)
        		{
        			int fd = a0;
        			int rv = close(fd);
        			sleep_ms(200);
        			return rv;
        		}
        		
        		static long syz_execute_func(volatile long text)
        		{
        			volatile long p[8] = {0};
        			(void)p;
        			asm volatile("" ::"r"(0l), "r"(1l), "r"(2l), "r"(3l), "r"(4l), "r"(5l), "r"(6l),
        				     "r"(7l), "r"(8l), "r"(9l), "r"(10l), "r"(11l), "r"(12l), "r"(13l));
        		((void (*)(void))(text))();
        			return 0;
        		}
        		
        		struct thread_t {
        			int created, call;
        			event_t ready, done;
        		};
        		
        		static struct thread_t threads[16];
        		static void execute_call(int call);
        		static int running;
        		
        		static void* thr(void* arg)
        		{
        			struct thread_t* th = (struct thread_t*)arg;
        			for (;;) {
        				event_wait(&th->ready);
        				event_reset(&th->ready);
        				execute_call(th->call);
        				__atomic_fetch_sub(&running, 1, __ATOMIC_RELAXED);
        				event_set(&th->done);
        			}
        			return 0;
        		}
        		
        		static void execute_one(void)
        		{
        			int i, call, thread;
        			for (call = 0; call < 15; call++) {
        				for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) {
        					struct thread_t* th = &threads[thread];
        					if (!th->created) {
        						th->created = 1;
        						event_init(&th->ready);
        						event_init(&th->done);
        						event_set(&th->done);
        						thread_start(thr, th);
        					}
        					if (!event_isset(&th->done))
        						continue;
        					event_reset(&th->done);
        					th->call = call;
        					__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        					event_set(&th->ready);
        					event_timedwait(&th->done, 45 + (call == 13 ? 3000 : 0) + (call == 14 ? 300 : 0));
        					break;
        				}
        			}
        			for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
        				sleep_ms(1);
        		}
        		
        		static void execute_one(void);
        		
        		#define WAIT_FLAGS 0
        		
        		static void loop(void)
        		{
        			int iter;
        			for (iter = 0;; iter++) {
        				char cwdbuf[32];
        				sprintf(cwdbuf, "./%d", iter);
        				if (mkdir(cwdbuf, 0777))
        			exit(1);
        				int pid = fork();
        				if (pid < 0)
        			exit(1);
        				if (pid == 0) {
        					if (chdir(cwdbuf))
        			exit(1);
        					execute_one();
        					exit(0);
        				}
        				int status = 0;
        				uint64_t start = current_time_ms();
        				for (;;) {
        					if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        						break;
        					sleep_ms(1);
        					if (current_time_ms() - start < 5 * 1000)
        						continue;
        					kill_and_wait(pid, &status);
        					break;
        				}
        				remove_dir(cwdbuf);
        			}
        		}
        		
        		#ifndef SYS_access
        		#define SYS_access 33
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_lseek
        		#define SYS_lseek 199
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_shmctl
        		#define SYS_shmctl 443
        		#endif
        		#ifndef SYS_shmget
        		#define SYS_shmget 231
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_socketpair
        		#define SYS_socketpair 135
        		#endif
        		
        		uint64_t r[6] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_socketpair, 1ul, 1ul, 0, 0x20000000ul);
        				if (res != -1) {
        		r[0] = *(uint32_t*)0x20000000;
        		r[1] = *(uint32_t*)0x20000004;
        				}
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = 8;
        				syscall(SYS_getpeername, r[1], 0x20000040ul, 0x20000080ul);
        				break;
        			case 2:
        				syscall(SYS_lseek, r[0], 5ul, 1ul);
        				break;
        			case 3:
        		memcpy((void*)0x200000c0, "./file0\000", 8);
        				syscall(SYS_access, 0x200000c0ul, 2ul);
        				break;
        			case 4:
        				res = syscall(SYS_socket, 1ul, 1ul, 0);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 5:
        		*(uint64_t*)0x200014c0 = 0x20000100;
        		*(uint32_t*)0x200014c8 = 0xc;
        		*(uint64_t*)0x200014d0 = 0x20001340;
        		*(uint64_t*)0x20001340 = 0x20000140;
        		*(uint64_t*)0x20001348 = 0x4d;
        		*(uint64_t*)0x20001350 = 0x200001c0;
        		*(uint64_t*)0x20001358 = 0x8d;
        		*(uint64_t*)0x20001360 = 0x20000280;
        		*(uint64_t*)0x20001368 = 0x25;
        		*(uint64_t*)0x20001370 = 0x200002c0;
        		*(uint64_t*)0x20001378 = 0x1000;
        		*(uint64_t*)0x20001380 = 0x200012c0;
        		*(uint64_t*)0x20001388 = 0x5f;
        		*(uint64_t*)0x200014d8 = 5;
        		*(uint64_t*)0x200014e0 = 0x200013c0;
        		*(uint64_t*)0x200014e8 = 0xd8;
        		*(uint32_t*)0x200014f0 = 0;
        				syscall(SYS_recvmsg, r[2], 0x200014c0ul, 0x40ul);
        				break;
        			case 6:
        				res = syscall(SYS_shmget, 0x798dd814ul, 0x3000ul, 0x60ul, 0x20ffc000ul);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 7:
        				syscall(SYS_shmctl, r[3], 4ul, 0);
        				break;
        			case 8:
        				res = syscall(SYS_socket, 0x18ul, 5ul, 0x3e);
        				if (res != -1)
        						r[4] = res;
        				break;
        			case 9:
        				syscall(SYS_mmap, 0x20ffd000ul, 0x2000ul, 1ul, 0x210ul, r[4], 0ul, 0x100000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\x5e\xca\xd8\xbb\x62\x7a\x3a\x76\x50\x4a\xd2\xe0\x3a\x19\x6c\x8c\x75\xbb\xf9\x78\xbb\xa9\x8c\x2d\xf5\xe2\x6a\x5d\x25\xf8\x4e\x08\x3d\xe8\xf2\x7b\x7f\xfe\xda\x58\x1b\x9a\xdc\x9a\xae\xeb\x97\xdb\x43\x38\x22\xdb\xbb\xf3\xa9\x00\x27\x38\x4a\xbb\x2e\x61\x43\x27\xb7\xdd\xd4\xbc\xbb\x87\x04\xd5\x75\x56\x3b\x2e\xcc\x9b\x13\xeb\xcc\x1d\x5f\x0a\xd4\xfd\x25\x0a\x79\xa3\x98\x3b\x54\x05\xaa\xe0\x36\x55\x03\x0e\x16\x0b\x22\xa6\x61\xf0\x1c\xab\xaa\xf0\xfe\x28\xfd\xed\x43\xed\xee\xea\xba\x8e\x29\xe7\xa5\x5e\xd1\x60", 126);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\x41\xb3\x7d\x67\x16\xc4\xc1\x19\x5d\x3c\xc4\x63\xa6\xf6\xb3\x86\x5f\x64\x64\x40\x0f\x91\xfc\xc4\x02\xb5\x8e\x45\x0c\xd3\x10\xfa\xf2\x0f\x2b\x31\xc4\xc1\xed\xdd\x69\x0b\xc4\xc2\x0d\x0c\xd1", 48);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000100, "\x00\x30\x4f\xf9\x82\x3a\x61\x45\xaf\xcf\xab\xe5\x9e\x7b\x44\x8a\xf5\x19\x13\x09\x95\x66\xd6\xb4\x99\x44\x63\xd5\x2f\xf7\x0c\x87\xd9\x5b\xd6\x58\xf3\x13\xdd\x8f\x6e\xf2\xae\x26\xb1\x30\xa2\x96\xec\x42\x60\x64\xb7\x96\x66\x1a\x0a", 57);
        		memcpy((void*)0x20000140, "\x8e\xb1\x2c\x0b\x12\xb9\xe8\x10\x70\x0f\x13\xd7\x30\x40\x08\x7e\x8a\x51\xc0\xe0\x50\x46\x23\xd6\x84\x34\x51\xcc\xdf\xfc\xe9", 31);
        				res = syz_usb_connect(0x374, 0x39, 0x20000100, 0x20000140);
        				if (res != -1)
        						r[5] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[5]);
        				break;
        			}
        		
        		}
        		int main(void)
        		{
        				syscall(SYS_mmap, 0x20000000ul, 0x1000000ul, 3ul, 0x1012ul, -1, 0ul, 0ul);
        					use_temporary_dir();
        					loop();
        			return 0;
        		}
        		
        		<stdin>: In function 'syz_usb_connect_impl':
        		<stdin>:636:63: error: unknown type name 'usb_ctrlrequest'
        		<stdin>:641:55: error: unknown type name 'usb_ctrlrequest'
        		
        		compiler invocation: /syzkaller/netbsd/src/../tools/bin/x86_64--netbsd-g++ [-o /tmp/syz-executor366391571 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/5 (0.18s)
        	csource_test.go:121: 
        --- FAIL: TestGenerate/netbsd/amd64/3 (0.17s)
        	csource_test.go:121: 
        --- FAIL: TestGenerate/netbsd/amd64/4 (0.17s)
        	csource_test.go:121: 
        --- FAIL: TestGenerate/netbsd/amd64/9 (0.23s)
        	csource_test.go:121: 
        --- FAIL: TestGenerate/netbsd/amd64/1 (0.18s)
        	csource_test.go:121: 
FAIL
FAIL	github.com/google/syzkaller/pkg/csource	3.104s
ok  	github.com/google/syzkaller/pkg/db	(cached)
ok  	github.com/google/syzkaller/pkg/email	(cached)
?   	github.com/google/syzkaller/pkg/gce	[no test files]
?   	github.com/google/syzkaller/pkg/gcs	[no test files]
?   	github.com/google/syzkaller/pkg/hash	[no test files]
ok  	github.com/google/syzkaller/pkg/host	(cached)
?   	github.com/google/syzkaller/pkg/html	[no test files]
ok  	github.com/google/syzkaller/pkg/ifuzz	(cached)
?   	github.com/google/syzkaller/pkg/ifuzz/gen	[no test files]
?   	github.com/google/syzkaller/pkg/ifuzz/generated	[no test files]
ok  	github.com/google/syzkaller/pkg/instance	(cached)
ok  	github.com/google/syzkaller/pkg/ipc	(cached)
?   	github.com/google/syzkaller/pkg/ipc/ipcconfig	[no test files]
ok  	github.com/google/syzkaller/pkg/kd	(cached)
ok  	github.com/google/syzkaller/pkg/log	(cached)
ok  	github.com/google/syzkaller/pkg/mgrconfig	(cached)
ok  	github.com/google/syzkaller/pkg/osutil	(cached)
ok  	github.com/google/syzkaller/pkg/report	(cached)
ok  	github.com/google/syzkaller/pkg/repro	(cached)
?   	github.com/google/syzkaller/pkg/rpctype	[no test files]
ok  	github.com/google/syzkaller/pkg/runtest	8.942s
ok  	github.com/google/syzkaller/pkg/serializer	(cached)
?   	github.com/google/syzkaller/pkg/signal	[no test files]
ok  	github.com/google/syzkaller/pkg/symbolizer	(cached)
ok  	github.com/google/syzkaller/pkg/vcs	(cached)
ok  	github.com/google/syzkaller/prog	(cached)
ok  	github.com/google/syzkaller/prog/test	(cached)
?   	github.com/google/syzkaller/sys	[no test files]
?   	github.com/google/syzkaller/sys/akaros	[no test files]
?   	github.com/google/syzkaller/sys/akaros/gen	[no test files]
?   	github.com/google/syzkaller/sys/freebsd	[no test files]
?   	github.com/google/syzkaller/sys/freebsd/gen	[no test files]
?   	github.com/google/syzkaller/sys/fuchsia	[no test files]
?   	github.com/google/syzkaller/sys/fuchsia/fidlgen	[no test files]
?   	github.com/google/syzkaller/sys/fuchsia/gen	[no test files]
?   	github.com/google/syzkaller/sys/fuchsia/layout	[no test files]
ok  	github.com/google/syzkaller/sys/linux	(cached)
?   	github.com/google/syzkaller/sys/linux/gen	[no test files]
?   	github.com/google/syzkaller/sys/netbsd	[no test files]
?   	github.com/google/syzkaller/sys/netbsd/gen	[no test files]
ok  	github.com/google/syzkaller/sys/openbsd	(cached)
?   	github.com/google/syzkaller/sys/openbsd/gen	[no test files]
?   	github.com/google/syzkaller/sys/syz-extract	[no test files]
?   	github.com/google/syzkaller/sys/syz-sysgen	[no test files]
?   	github.com/google/syzkaller/sys/targets	[no test files]
?   	github.com/google/syzkaller/sys/test	[no test files]
?   	github.com/google/syzkaller/sys/test/gen	[no test files]
?   	github.com/google/syzkaller/sys/trusty	[no test files]
?   	github.com/google/syzkaller/sys/trusty/gen	[no test files]
?   	github.com/google/syzkaller/sys/windows	[no test files]
?   	github.com/google/syzkaller/sys/windows/gen	[no test files]
ok  	github.com/google/syzkaller/syz-ci	(cached)
ok  	github.com/google/syzkaller/syz-fuzzer	(cached)
ok  	github.com/google/syzkaller/syz-hub	(cached)
ok  	github.com/google/syzkaller/syz-hub/state	(cached)
?   	github.com/google/syzkaller/syz-manager	[no test files]
?   	github.com/google/syzkaller/tools/syz-benchcmp	[no test files]
?   	github.com/google/syzkaller/tools/syz-bisect	[no test files]
?   	github.com/google/syzkaller/tools/syz-check	[no test files]
?   	github.com/google/syzkaller/tools/syz-cover	[no test files]
?   	github.com/google/syzkaller/tools/syz-crush	[no test files]
?   	github.com/google/syzkaller/tools/syz-db	[no test files]
?   	github.com/google/syzkaller/tools/syz-execprog	[no test files]
?   	github.com/google/syzkaller/tools/syz-expand	[no test files]
?   	github.com/google/syzkaller/tools/syz-fmt	[no test files]
?   	github.com/google/syzkaller/tools/syz-imagegen	[no test files]
?   	github.com/google/syzkaller/tools/syz-make	[no test files]
?   	github.com/google/syzkaller/tools/syz-mutate	[no test files]
?   	github.com/google/syzkaller/tools/syz-prog2c	[no test files]
?   	github.com/google/syzkaller/tools/syz-repro	[no test files]
?   	github.com/google/syzkaller/tools/syz-reprolist	[no test files]
?   	github.com/google/syzkaller/tools/syz-runtest	[no test files]
?   	github.com/google/syzkaller/tools/syz-showprio	[no test files]
?   	github.com/google/syzkaller/tools/syz-stress	[no test files]
?   	github.com/google/syzkaller/tools/syz-symbolize	[no test files]
?   	github.com/google/syzkaller/tools/syz-testbuild	[no test files]
?   	github.com/google/syzkaller/tools/syz-trace2syz	[no test files]
ok  	github.com/google/syzkaller/tools/syz-trace2syz/parser	(cached)
ok  	github.com/google/syzkaller/tools/syz-trace2syz/proggen	(cached)
?   	github.com/google/syzkaller/tools/syz-tty	[no test files]
?   	github.com/google/syzkaller/tools/syz-upgrade	[no test files]
?   	github.com/google/syzkaller/tools/syz-usbgen	[no test files]
ok  	github.com/google/syzkaller/vm	(cached)
?   	github.com/google/syzkaller/vm/adb	[no test files]
?   	github.com/google/syzkaller/vm/bhyve	[no test files]
?   	github.com/google/syzkaller/vm/gce	[no test files]
?   	github.com/google/syzkaller/vm/gvisor	[no test files]
ok  	github.com/google/syzkaller/vm/isolated	(cached)
?   	github.com/google/syzkaller/vm/kvm	[no test files]
?   	github.com/google/syzkaller/vm/odroid	[no test files]
?   	github.com/google/syzkaller/vm/qemu	[no test files]
ok  	github.com/google/syzkaller/vm/vmimpl	(cached)
?   	github.com/google/syzkaller/vm/vmm	[no test files]