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	13.171s
ok  	github.com/google/syzkaller/pkg/build	5.198s
?   	github.com/google/syzkaller/pkg/cmdprof	[no test files]
ok  	github.com/google/syzkaller/pkg/compiler	3.737s
ok  	github.com/google/syzkaller/pkg/config	(cached)
?   	github.com/google/syzkaller/pkg/cover	[no test files]
--- FAIL: TestGenerate (1.59s)
    --- FAIL: TestGenerate/netbsd/amd64 (0.22s)
    	csource_test.go:67: seed=1590062799896227704
        --- FAIL: TestGenerate/netbsd/amd64/5 (0.39s)
        	csource_test.go:123: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:1 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:
        		getsockopt$SO_PEERCRED(0xffffffffffffffff, 0xffff, 0x11, &(0x7f0000000040)={0x0, <r0=>0x0}, 0xc)
        		getgroups(0x4, &(0x7f0000000080)=[0xffffffffffffffff, 0xffffffffffffffff, <r1=>0xffffffffffffffff, 0xffffffffffffffff])
        		lchown(&(0x7f0000000000)='./file0\x00', r0, r1)
        		r2 = accept(0xffffffffffffff9c, &(0x7f00000000c0)=@un=@abs, &(0x7f0000000100)=0x8)
        		pread(r2, &(0x7f0000000140)="086f7ed0fc950569406a63e99961c3f7090919fa4a3bbf89ff3534df61a6e6889d32ec5392bf191c5b6802b541f07adf0bb579da9065dc022769dede4bbad1a56453d7f2fb79e788bad1854bfbf216cdf204571aa9b9279c0dde0d943de6ffa9131b08c7399d79e48e0ac02da4a6e6f38de67357bb41c043880c46fa1fef362f5fac6316186c1e79d83036f40ba9ad13faf5d2666c83f524fe1a48f025fc5503d21051ddceb85649d89c1a27bb916fe65e95d7ff2b5e29539a891eaf6bd1a98da3d9c27d3aac938a8c5479263bc785592eb1ec476d58a43499862676de2a04dcffa78535eec6fd3b6baa8633c7be7c49b48f6c4d", 0xf4, 0x9)
        		vfork()
        		recvmsg(0xffffffffffffffff, &(0x7f0000000540)={&(0x7f0000000240)=@in6, 0xc, &(0x7f0000000400)=[{&(0x7f0000000280)=""/81, 0x51}, {&(0x7f0000000300)=""/21, 0x15}, {&(0x7f0000000340)=""/106, 0x6a}, {&(0x7f00000003c0)=""/24, 0x18}], 0x4, &(0x7f0000000440)=""/196, 0xc4}, 0x1)
        		utimes(&(0x7f0000000580)='./file0\x00', &(0x7f00000005c0)={{0x1, 0x8}, {0x8, 0xb138}})
        		socket$inet6(0x18, 0x5, 0x4)
        		paccept(0xffffffffffffffff, 0x0, &(0x7f0000000680), 0x20000000)
        		syz_emit_ethernet(0xd1, &(0x7f0000000000)="a1e83085df3ab0e9d9cca6234ea27c5bf372ec40ed1d0539d0f229fb919eacbd15c4f202517af5ad8dd671d6a62a1d435440bd7ee3a717438ebe256e15632459b3a0375beee08e6c82620aa527495829dd923f5f95f8601a313aa71526a47e13ea19ab76f2433af47d502d16a64389bd23bacce14f0c30ed1100300ac99d9dc835d6a42464bae4cd080d110ce79dde1ecefe47984f9242c2608cefb9ee6dee0566fe85fa59742e9c237f37085743a4382dee82c7f06cc20a3397fe5bd7c22f4847fff3852397694393cd2508b86af6b6ea")
        		syz_execute_func(&(0x7f0000000100)="660f383f8b00000000362642f9f3afc4c3696fefebc4637d064c9c0098d8880000000042afc461782e79cb410f38057dd1c442793504f9")
        		syz_extract_tcp_res(&(0x7f0000000140), 0x4, 0x3)
        		r3 = syz_usb_connect(0xffff, 0x4d, &(0x7f0000000180)="f338a8163b89a7b30656ed66c391e973b0012853cfb48ca33165acb891ff9f03d9b791b0bf11719eb38a83dd12f1fc41fc6f47067d1faae2fad492d4df84b81e598c4b3a8c03360b02e6cf43cb", &(0x7f0000000200)="5fe31f9019e339918b8816c1f76e6c58ee4b2dc881a88aa3e16253a3ff98106bca2f4045df2b88e82c3c55830e854db3d484b1b0ec7159a23f916d9415f1c55240604fb1a1749442ec2980dab16faaec913e05ddc2c81bbdc9fa20975af953c5a270892f4dce5a795a2ac5")
        		syz_usb_disconnect(r3)
        		
        	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_accept
        		#define SYS_accept 30
        		#endif
        		#ifndef SYS_getgroups
        		#define SYS_getgroups 79
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lchown
        		#define SYS_lchown 275
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_paccept
        		#define SYS_paccept 456
        		#endif
        		#ifndef SYS_pread
        		#define SYS_pread 173
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		#ifndef SYS_vfork
        		#define SYS_vfork 66
        		#endif
        		
        		uint64_t r[4] = {0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_getsockopt, -1, 0xffff, 0x11, 0x20000040ul, 0xcul);
        				if (res != -1)
        		r[0] = *(uint32_t*)0x20000044;
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = -1;
        		*(uint32_t*)0x20000084 = -1;
        		*(uint32_t*)0x20000088 = -1;
        		*(uint32_t*)0x2000008c = -1;
        				res = syscall(SYS_getgroups, 4ul, 0x20000080ul);
        				if (res != -1)
        		r[1] = *(uint32_t*)0x20000088;
        				break;
        			case 2:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        				syscall(SYS_lchown, 0x20000000ul, r[0], r[1]);
        				break;
        			case 3:
        		*(uint32_t*)0x20000100 = 8;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200000c0ul, 0x20000100ul);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 4:
        		memcpy((void*)0x20000140, "\x08\x6f\x7e\xd0\xfc\x95\x05\x69\x40\x6a\x63\xe9\x99\x61\xc3\xf7\x09\x09\x19\xfa\x4a\x3b\xbf\x89\xff\x35\x34\xdf\x61\xa6\xe6\x88\x9d\x32\xec\x53\x92\xbf\x19\x1c\x5b\x68\x02\xb5\x41\xf0\x7a\xdf\x0b\xb5\x79\xda\x90\x65\xdc\x02\x27\x69\xde\xde\x4b\xba\xd1\xa5\x64\x53\xd7\xf2\xfb\x79\xe7\x88\xba\xd1\x85\x4b\xfb\xf2\x16\xcd\xf2\x04\x57\x1a\xa9\xb9\x27\x9c\x0d\xde\x0d\x94\x3d\xe6\xff\xa9\x13\x1b\x08\xc7\x39\x9d\x79\xe4\x8e\x0a\xc0\x2d\xa4\xa6\xe6\xf3\x8d\xe6\x73\x57\xbb\x41\xc0\x43\x88\x0c\x46\xfa\x1f\xef\x36\x2f\x5f\xac\x63\x16\x18\x6c\x1e\x79\xd8\x30\x36\xf4\x0b\xa9\xad\x13\xfa\xf5\xd2\x66\x6c\x83\xf5\x24\xfe\x1a\x48\xf0\x25\xfc\x55\x03\xd2\x10\x51\xdd\xce\xb8\x56\x49\xd8\x9c\x1a\x27\xbb\x91\x6f\xe6\x5e\x95\xd7\xff\x2b\x5e\x29\x53\x9a\x89\x1e\xaf\x6b\xd1\xa9\x8d\xa3\xd9\xc2\x7d\x3a\xac\x93\x8a\x8c\x54\x79\x26\x3b\xc7\x85\x59\x2e\xb1\xec\x47\x6d\x58\xa4\x34\x99\x86\x26\x76\xde\x2a\x04\xdc\xff\xa7\x85\x35\xee\xc6\xfd\x3b\x6b\xaa\x86\x33\xc7\xbe\x7c\x49\xb4\x8f\x6c\x4d", 244);
        				syscall(SYS_pread, r[2], 0x20000140ul, 0xf4ul, 9ul);
        				break;
        			case 5:
        				syscall(SYS_vfork);
        				break;
        			case 6:
        		*(uint64_t*)0x20000540 = 0x20000240;
        		*(uint32_t*)0x20000548 = 0xc;
        		*(uint64_t*)0x20000550 = 0x20000400;
        		*(uint64_t*)0x20000400 = 0x20000280;
        		*(uint64_t*)0x20000408 = 0x51;
        		*(uint64_t*)0x20000410 = 0x20000300;
        		*(uint64_t*)0x20000418 = 0x15;
        		*(uint64_t*)0x20000420 = 0x20000340;
        		*(uint64_t*)0x20000428 = 0x6a;
        		*(uint64_t*)0x20000430 = 0x200003c0;
        		*(uint64_t*)0x20000438 = 0x18;
        		*(uint64_t*)0x20000558 = 4;
        		*(uint64_t*)0x20000560 = 0x20000440;
        		*(uint64_t*)0x20000568 = 0xc4;
        		*(uint32_t*)0x20000570 = 0;
        				syscall(SYS_recvmsg, -1, 0x20000540ul, 1ul);
        				break;
        			case 7:
        		memcpy((void*)0x20000580, "./file0\000", 8);
        		*(uint64_t*)0x200005c0 = 1;
        		*(uint64_t*)0x200005c8 = 8;
        		*(uint64_t*)0x200005d0 = 8;
        		*(uint64_t*)0x200005d8 = 0xb138;
        				syscall(SYS_utimes, 0x20000580ul, 0x200005c0ul);
        				break;
        			case 8:
        				syscall(SYS_socket, 0x18ul, 5ul, 4);
        				break;
        			case 9:
        		*(uint32_t*)0x20000680 = 0;
        				syscall(SYS_paccept, -1, 0ul, 0x20000680ul, 0x20000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xa1\xe8\x30\x85\xdf\x3a\xb0\xe9\xd9\xcc\xa6\x23\x4e\xa2\x7c\x5b\xf3\x72\xec\x40\xed\x1d\x05\x39\xd0\xf2\x29\xfb\x91\x9e\xac\xbd\x15\xc4\xf2\x02\x51\x7a\xf5\xad\x8d\xd6\x71\xd6\xa6\x2a\x1d\x43\x54\x40\xbd\x7e\xe3\xa7\x17\x43\x8e\xbe\x25\x6e\x15\x63\x24\x59\xb3\xa0\x37\x5b\xee\xe0\x8e\x6c\x82\x62\x0a\xa5\x27\x49\x58\x29\xdd\x92\x3f\x5f\x95\xf8\x60\x1a\x31\x3a\xa7\x15\x26\xa4\x7e\x13\xea\x19\xab\x76\xf2\x43\x3a\xf4\x7d\x50\x2d\x16\xa6\x43\x89\xbd\x23\xba\xcc\xe1\x4f\x0c\x30\xed\x11\x00\x30\x0a\xc9\x9d\x9d\xc8\x35\xd6\xa4\x24\x64\xba\xe4\xcd\x08\x0d\x11\x0c\xe7\x9d\xde\x1e\xce\xfe\x47\x98\x4f\x92\x42\xc2\x60\x8c\xef\xb9\xee\x6d\xee\x05\x66\xfe\x85\xfa\x59\x74\x2e\x9c\x23\x7f\x37\x08\x57\x43\xa4\x38\x2d\xee\x82\xc7\xf0\x6c\xc2\x0a\x33\x97\xfe\x5b\xd7\xc2\x2f\x48\x47\xff\xf3\x85\x23\x97\x69\x43\x93\xcd\x25\x08\xb8\x6a\xf6\xb6\xea", 209);
        				break;
        			case 11:
        		memcpy((void*)0x20000100, "\x66\x0f\x38\x3f\x8b\x00\x00\x00\x00\x36\x26\x42\xf9\xf3\xaf\xc4\xc3\x69\x6f\xef\xeb\xc4\x63\x7d\x06\x4c\x9c\x00\x98\xd8\x88\x00\x00\x00\x00\x42\xaf\xc4\x61\x78\x2e\x79\xcb\x41\x0f\x38\x05\x7d\xd1\xc4\x42\x79\x35\x04\xf9", 55);
        				syz_execute_func(0x20000100);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000180, "\xf3\x38\xa8\x16\x3b\x89\xa7\xb3\x06\x56\xed\x66\xc3\x91\xe9\x73\xb0\x01\x28\x53\xcf\xb4\x8c\xa3\x31\x65\xac\xb8\x91\xff\x9f\x03\xd9\xb7\x91\xb0\xbf\x11\x71\x9e\xb3\x8a\x83\xdd\x12\xf1\xfc\x41\xfc\x6f\x47\x06\x7d\x1f\xaa\xe2\xfa\xd4\x92\xd4\xdf\x84\xb8\x1e\x59\x8c\x4b\x3a\x8c\x03\x36\x0b\x02\xe6\xcf\x43\xcb", 77);
        		memcpy((void*)0x20000200, "\x5f\xe3\x1f\x90\x19\xe3\x39\x91\x8b\x88\x16\xc1\xf7\x6e\x6c\x58\xee\x4b\x2d\xc8\x81\xa8\x8a\xa3\xe1\x62\x53\xa3\xff\x98\x10\x6b\xca\x2f\x40\x45\xdf\x2b\x88\xe8\x2c\x3c\x55\x83\x0e\x85\x4d\xb3\xd4\x84\xb1\xb0\xec\x71\x59\xa2\x3f\x91\x6d\x94\x15\xf1\xc5\x52\x40\x60\x4f\xb1\xa1\x74\x94\x42\xec\x29\x80\xda\xb1\x6f\xaa\xec\x91\x3e\x05\xdd\xc2\xc8\x1b\xbd\xc9\xfa\x20\x97\x5a\xf9\x53\xc5\xa2\x70\x89\x2f\x4d\xce\x5a\x79\x5a\x2a\xc5", 107);
        				res = syz_usb_connect(0xffff, 0x4d, 0x20000180, 0x20000200);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[3]);
        				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-executor458520227 -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 (0.39s)
        	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:
        		getsockopt$SO_PEERCRED(0xffffffffffffffff, 0xffff, 0x11, &(0x7f0000000040)={0x0, <r0=>0x0}, 0xc)
        		getgroups(0x4, &(0x7f0000000080)=[0xffffffffffffffff, 0xffffffffffffffff, <r1=>0xffffffffffffffff, 0xffffffffffffffff])
        		lchown(&(0x7f0000000000)='./file0\x00', r0, r1)
        		r2 = accept(0xffffffffffffff9c, &(0x7f00000000c0)=@un=@abs, &(0x7f0000000100)=0x8)
        		pread(r2, &(0x7f0000000140)="086f7ed0fc950569406a63e99961c3f7090919fa4a3bbf89ff3534df61a6e6889d32ec5392bf191c5b6802b541f07adf0bb579da9065dc022769dede4bbad1a56453d7f2fb79e788bad1854bfbf216cdf204571aa9b9279c0dde0d943de6ffa9131b08c7399d79e48e0ac02da4a6e6f38de67357bb41c043880c46fa1fef362f5fac6316186c1e79d83036f40ba9ad13faf5d2666c83f524fe1a48f025fc5503d21051ddceb85649d89c1a27bb916fe65e95d7ff2b5e29539a891eaf6bd1a98da3d9c27d3aac938a8c5479263bc785592eb1ec476d58a43499862676de2a04dcffa78535eec6fd3b6baa8633c7be7c49b48f6c4d", 0xf4, 0x9)
        		vfork()
        		recvmsg(0xffffffffffffffff, &(0x7f0000000540)={&(0x7f0000000240)=@in6, 0xc, &(0x7f0000000400)=[{&(0x7f0000000280)=""/81, 0x51}, {&(0x7f0000000300)=""/21, 0x15}, {&(0x7f0000000340)=""/106, 0x6a}, {&(0x7f00000003c0)=""/24, 0x18}], 0x4, &(0x7f0000000440)=""/196, 0xc4}, 0x1)
        		utimes(&(0x7f0000000580)='./file0\x00', &(0x7f00000005c0)={{0x1, 0x8}, {0x8, 0xb138}})
        		socket$inet6(0x18, 0x5, 0x4)
        		paccept(0xffffffffffffffff, 0x0, &(0x7f0000000680), 0x20000000)
        		syz_emit_ethernet(0xd1, &(0x7f0000000000)="a1e83085df3ab0e9d9cca6234ea27c5bf372ec40ed1d0539d0f229fb919eacbd15c4f202517af5ad8dd671d6a62a1d435440bd7ee3a717438ebe256e15632459b3a0375beee08e6c82620aa527495829dd923f5f95f8601a313aa71526a47e13ea19ab76f2433af47d502d16a64389bd23bacce14f0c30ed1100300ac99d9dc835d6a42464bae4cd080d110ce79dde1ecefe47984f9242c2608cefb9ee6dee0566fe85fa59742e9c237f37085743a4382dee82c7f06cc20a3397fe5bd7c22f4847fff3852397694393cd2508b86af6b6ea")
        		syz_execute_func(&(0x7f0000000100)="660f383f8b00000000362642f9f3afc4c3696fefebc4637d064c9c0098d8880000000042afc461782e79cb410f38057dd1c442793504f9")
        		syz_extract_tcp_res(&(0x7f0000000140), 0x4, 0x3)
        		r3 = syz_usb_connect(0xffff, 0x4d, &(0x7f0000000180)="f338a8163b89a7b30656ed66c391e973b0012853cfb48ca33165acb891ff9f03d9b791b0bf11719eb38a83dd12f1fc41fc6f47067d1faae2fad492d4df84b81e598c4b3a8c03360b02e6cf43cb", &(0x7f0000000200)="5fe31f9019e339918b8816c1f76e6c58ee4b2dc881a88aa3e16253a3ff98106bca2f4045df2b88e82c3c55830e854db3d484b1b0ec7159a23f916d9415f1c55240604fb1a1749442ec2980dab16faaec913e05ddc2c81bbdc9fa20975af953c5a270892f4dce5a795a2ac5")
        		syz_usb_disconnect(r3)
        		
        	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_accept
        		#define SYS_accept 30
        		#endif
        		#ifndef SYS_getgroups
        		#define SYS_getgroups 79
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lchown
        		#define SYS_lchown 275
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_paccept
        		#define SYS_paccept 456
        		#endif
        		#ifndef SYS_pread
        		#define SYS_pread 173
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		#ifndef SYS_vfork
        		#define SYS_vfork 66
        		#endif
        		
        		uint64_t r[4] = {0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_getsockopt, -1, 0xffff, 0x11, 0x20000040ul, 0xcul);
        				if (res != -1)
        		r[0] = *(uint32_t*)0x20000044;
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = -1;
        		*(uint32_t*)0x20000084 = -1;
        		*(uint32_t*)0x20000088 = -1;
        		*(uint32_t*)0x2000008c = -1;
        				res = syscall(SYS_getgroups, 4ul, 0x20000080ul);
        				if (res != -1)
        		r[1] = *(uint32_t*)0x20000088;
        				break;
        			case 2:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        				syscall(SYS_lchown, 0x20000000ul, r[0], r[1]);
        				break;
        			case 3:
        		*(uint32_t*)0x20000100 = 8;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200000c0ul, 0x20000100ul);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 4:
        		memcpy((void*)0x20000140, "\x08\x6f\x7e\xd0\xfc\x95\x05\x69\x40\x6a\x63\xe9\x99\x61\xc3\xf7\x09\x09\x19\xfa\x4a\x3b\xbf\x89\xff\x35\x34\xdf\x61\xa6\xe6\x88\x9d\x32\xec\x53\x92\xbf\x19\x1c\x5b\x68\x02\xb5\x41\xf0\x7a\xdf\x0b\xb5\x79\xda\x90\x65\xdc\x02\x27\x69\xde\xde\x4b\xba\xd1\xa5\x64\x53\xd7\xf2\xfb\x79\xe7\x88\xba\xd1\x85\x4b\xfb\xf2\x16\xcd\xf2\x04\x57\x1a\xa9\xb9\x27\x9c\x0d\xde\x0d\x94\x3d\xe6\xff\xa9\x13\x1b\x08\xc7\x39\x9d\x79\xe4\x8e\x0a\xc0\x2d\xa4\xa6\xe6\xf3\x8d\xe6\x73\x57\xbb\x41\xc0\x43\x88\x0c\x46\xfa\x1f\xef\x36\x2f\x5f\xac\x63\x16\x18\x6c\x1e\x79\xd8\x30\x36\xf4\x0b\xa9\xad\x13\xfa\xf5\xd2\x66\x6c\x83\xf5\x24\xfe\x1a\x48\xf0\x25\xfc\x55\x03\xd2\x10\x51\xdd\xce\xb8\x56\x49\xd8\x9c\x1a\x27\xbb\x91\x6f\xe6\x5e\x95\xd7\xff\x2b\x5e\x29\x53\x9a\x89\x1e\xaf\x6b\xd1\xa9\x8d\xa3\xd9\xc2\x7d\x3a\xac\x93\x8a\x8c\x54\x79\x26\x3b\xc7\x85\x59\x2e\xb1\xec\x47\x6d\x58\xa4\x34\x99\x86\x26\x76\xde\x2a\x04\xdc\xff\xa7\x85\x35\xee\xc6\xfd\x3b\x6b\xaa\x86\x33\xc7\xbe\x7c\x49\xb4\x8f\x6c\x4d", 244);
        				syscall(SYS_pread, r[2], 0x20000140ul, 0xf4ul, 9ul);
        				break;
        			case 5:
        				syscall(SYS_vfork);
        				break;
        			case 6:
        		*(uint64_t*)0x20000540 = 0x20000240;
        		*(uint32_t*)0x20000548 = 0xc;
        		*(uint64_t*)0x20000550 = 0x20000400;
        		*(uint64_t*)0x20000400 = 0x20000280;
        		*(uint64_t*)0x20000408 = 0x51;
        		*(uint64_t*)0x20000410 = 0x20000300;
        		*(uint64_t*)0x20000418 = 0x15;
        		*(uint64_t*)0x20000420 = 0x20000340;
        		*(uint64_t*)0x20000428 = 0x6a;
        		*(uint64_t*)0x20000430 = 0x200003c0;
        		*(uint64_t*)0x20000438 = 0x18;
        		*(uint64_t*)0x20000558 = 4;
        		*(uint64_t*)0x20000560 = 0x20000440;
        		*(uint64_t*)0x20000568 = 0xc4;
        		*(uint32_t*)0x20000570 = 0;
        				syscall(SYS_recvmsg, -1, 0x20000540ul, 1ul);
        				break;
        			case 7:
        		memcpy((void*)0x20000580, "./file0\000", 8);
        		*(uint64_t*)0x200005c0 = 1;
        		*(uint64_t*)0x200005c8 = 8;
        		*(uint64_t*)0x200005d0 = 8;
        		*(uint64_t*)0x200005d8 = 0xb138;
        				syscall(SYS_utimes, 0x20000580ul, 0x200005c0ul);
        				break;
        			case 8:
        				syscall(SYS_socket, 0x18ul, 5ul, 4);
        				break;
        			case 9:
        		*(uint32_t*)0x20000680 = 0;
        				syscall(SYS_paccept, -1, 0ul, 0x20000680ul, 0x20000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xa1\xe8\x30\x85\xdf\x3a\xb0\xe9\xd9\xcc\xa6\x23\x4e\xa2\x7c\x5b\xf3\x72\xec\x40\xed\x1d\x05\x39\xd0\xf2\x29\xfb\x91\x9e\xac\xbd\x15\xc4\xf2\x02\x51\x7a\xf5\xad\x8d\xd6\x71\xd6\xa6\x2a\x1d\x43\x54\x40\xbd\x7e\xe3\xa7\x17\x43\x8e\xbe\x25\x6e\x15\x63\x24\x59\xb3\xa0\x37\x5b\xee\xe0\x8e\x6c\x82\x62\x0a\xa5\x27\x49\x58\x29\xdd\x92\x3f\x5f\x95\xf8\x60\x1a\x31\x3a\xa7\x15\x26\xa4\x7e\x13\xea\x19\xab\x76\xf2\x43\x3a\xf4\x7d\x50\x2d\x16\xa6\x43\x89\xbd\x23\xba\xcc\xe1\x4f\x0c\x30\xed\x11\x00\x30\x0a\xc9\x9d\x9d\xc8\x35\xd6\xa4\x24\x64\xba\xe4\xcd\x08\x0d\x11\x0c\xe7\x9d\xde\x1e\xce\xfe\x47\x98\x4f\x92\x42\xc2\x60\x8c\xef\xb9\xee\x6d\xee\x05\x66\xfe\x85\xfa\x59\x74\x2e\x9c\x23\x7f\x37\x08\x57\x43\xa4\x38\x2d\xee\x82\xc7\xf0\x6c\xc2\x0a\x33\x97\xfe\x5b\xd7\xc2\x2f\x48\x47\xff\xf3\x85\x23\x97\x69\x43\x93\xcd\x25\x08\xb8\x6a\xf6\xb6\xea", 209);
        				break;
        			case 11:
        		memcpy((void*)0x20000100, "\x66\x0f\x38\x3f\x8b\x00\x00\x00\x00\x36\x26\x42\xf9\xf3\xaf\xc4\xc3\x69\x6f\xef\xeb\xc4\x63\x7d\x06\x4c\x9c\x00\x98\xd8\x88\x00\x00\x00\x00\x42\xaf\xc4\x61\x78\x2e\x79\xcb\x41\x0f\x38\x05\x7d\xd1\xc4\x42\x79\x35\x04\xf9", 55);
        				syz_execute_func(0x20000100);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000180, "\xf3\x38\xa8\x16\x3b\x89\xa7\xb3\x06\x56\xed\x66\xc3\x91\xe9\x73\xb0\x01\x28\x53\xcf\xb4\x8c\xa3\x31\x65\xac\xb8\x91\xff\x9f\x03\xd9\xb7\x91\xb0\xbf\x11\x71\x9e\xb3\x8a\x83\xdd\x12\xf1\xfc\x41\xfc\x6f\x47\x06\x7d\x1f\xaa\xe2\xfa\xd4\x92\xd4\xdf\x84\xb8\x1e\x59\x8c\x4b\x3a\x8c\x03\x36\x0b\x02\xe6\xcf\x43\xcb", 77);
        		memcpy((void*)0x20000200, "\x5f\xe3\x1f\x90\x19\xe3\x39\x91\x8b\x88\x16\xc1\xf7\x6e\x6c\x58\xee\x4b\x2d\xc8\x81\xa8\x8a\xa3\xe1\x62\x53\xa3\xff\x98\x10\x6b\xca\x2f\x40\x45\xdf\x2b\x88\xe8\x2c\x3c\x55\x83\x0e\x85\x4d\xb3\xd4\x84\xb1\xb0\xec\x71\x59\xa2\x3f\x91\x6d\x94\x15\xf1\xc5\x52\x40\x60\x4f\xb1\xa1\x74\x94\x42\xec\x29\x80\xda\xb1\x6f\xaa\xec\x91\x3e\x05\xdd\xc2\xc8\x1b\xbd\xc9\xfa\x20\x97\x5a\xf9\x53\xc5\xa2\x70\x89\x2f\x4d\xce\x5a\x79\x5a\x2a\xc5", 107);
        				res = syz_usb_connect(0xffff, 0x4d, 0x20000180, 0x20000200);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[3]);
        				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-executor854555271 -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/amd64/0 (0.41s)
        	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:
        		getsockopt$SO_PEERCRED(0xffffffffffffffff, 0xffff, 0x11, &(0x7f0000000040)={0x0, <r0=>0x0}, 0xc)
        		getgroups(0x4, &(0x7f0000000080)=[0xffffffffffffffff, 0xffffffffffffffff, <r1=>0xffffffffffffffff, 0xffffffffffffffff])
        		lchown(&(0x7f0000000000)='./file0\x00', r0, r1)
        		r2 = accept(0xffffffffffffff9c, &(0x7f00000000c0)=@un=@abs, &(0x7f0000000100)=0x8)
        		pread(r2, &(0x7f0000000140)="086f7ed0fc950569406a63e99961c3f7090919fa4a3bbf89ff3534df61a6e6889d32ec5392bf191c5b6802b541f07adf0bb579da9065dc022769dede4bbad1a56453d7f2fb79e788bad1854bfbf216cdf204571aa9b9279c0dde0d943de6ffa9131b08c7399d79e48e0ac02da4a6e6f38de67357bb41c043880c46fa1fef362f5fac6316186c1e79d83036f40ba9ad13faf5d2666c83f524fe1a48f025fc5503d21051ddceb85649d89c1a27bb916fe65e95d7ff2b5e29539a891eaf6bd1a98da3d9c27d3aac938a8c5479263bc785592eb1ec476d58a43499862676de2a04dcffa78535eec6fd3b6baa8633c7be7c49b48f6c4d", 0xf4, 0x9)
        		vfork()
        		recvmsg(0xffffffffffffffff, &(0x7f0000000540)={&(0x7f0000000240)=@in6, 0xc, &(0x7f0000000400)=[{&(0x7f0000000280)=""/81, 0x51}, {&(0x7f0000000300)=""/21, 0x15}, {&(0x7f0000000340)=""/106, 0x6a}, {&(0x7f00000003c0)=""/24, 0x18}], 0x4, &(0x7f0000000440)=""/196, 0xc4}, 0x1)
        		utimes(&(0x7f0000000580)='./file0\x00', &(0x7f00000005c0)={{0x1, 0x8}, {0x8, 0xb138}})
        		socket$inet6(0x18, 0x5, 0x4)
        		paccept(0xffffffffffffffff, 0x0, &(0x7f0000000680), 0x20000000)
        		syz_emit_ethernet(0xd1, &(0x7f0000000000)="a1e83085df3ab0e9d9cca6234ea27c5bf372ec40ed1d0539d0f229fb919eacbd15c4f202517af5ad8dd671d6a62a1d435440bd7ee3a717438ebe256e15632459b3a0375beee08e6c82620aa527495829dd923f5f95f8601a313aa71526a47e13ea19ab76f2433af47d502d16a64389bd23bacce14f0c30ed1100300ac99d9dc835d6a42464bae4cd080d110ce79dde1ecefe47984f9242c2608cefb9ee6dee0566fe85fa59742e9c237f37085743a4382dee82c7f06cc20a3397fe5bd7c22f4847fff3852397694393cd2508b86af6b6ea")
        		syz_execute_func(&(0x7f0000000100)="660f383f8b00000000362642f9f3afc4c3696fefebc4637d064c9c0098d8880000000042afc461782e79cb410f38057dd1c442793504f9")
        		syz_extract_tcp_res(&(0x7f0000000140), 0x4, 0x3)
        		r3 = syz_usb_connect(0xffff, 0x4d, &(0x7f0000000180)="f338a8163b89a7b30656ed66c391e973b0012853cfb48ca33165acb891ff9f03d9b791b0bf11719eb38a83dd12f1fc41fc6f47067d1faae2fad492d4df84b81e598c4b3a8c03360b02e6cf43cb", &(0x7f0000000200)="5fe31f9019e339918b8816c1f76e6c58ee4b2dc881a88aa3e16253a3ff98106bca2f4045df2b88e82c3c55830e854db3d484b1b0ec7159a23f916d9415f1c55240604fb1a1749442ec2980dab16faaec913e05ddc2c81bbdc9fa20975af953c5a270892f4dce5a795a2ac5")
        		syz_usb_disconnect(r3)
        		
        	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_accept
        		#define SYS_accept 30
        		#endif
        		#ifndef SYS_getgroups
        		#define SYS_getgroups 79
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lchown
        		#define SYS_lchown 275
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_paccept
        		#define SYS_paccept 456
        		#endif
        		#ifndef SYS_pread
        		#define SYS_pread 173
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		#ifndef SYS_vfork
        		#define SYS_vfork 66
        		#endif
        		
        		uint64_t r[4] = {0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_one(void)
        		{
        				intptr_t res = 0;
        			res = syscall(SYS_getsockopt, -1, 0xffff, 0x11, 0x20000040ul, 0xcul);
        			if (res != -1)
        		r[0] = *(uint32_t*)0x20000044;
        		*(uint32_t*)0x20000080 = -1;
        		*(uint32_t*)0x20000084 = -1;
        		*(uint32_t*)0x20000088 = -1;
        		*(uint32_t*)0x2000008c = -1;
        			res = syscall(SYS_getgroups, 4ul, 0x20000080ul);
        			if (res != -1)
        		r[1] = *(uint32_t*)0x20000088;
        		memcpy((void*)0x20000000, "./file0\000", 8);
        			syscall(SYS_lchown, 0x20000000ul, r[0], r[1]);
        		*(uint32_t*)0x20000100 = 8;
        			res = syscall(SYS_accept, 0xffffff9c, 0x200000c0ul, 0x20000100ul);
        			if (res != -1)
        				r[2] = res;
        		memcpy((void*)0x20000140, "\x08\x6f\x7e\xd0\xfc\x95\x05\x69\x40\x6a\x63\xe9\x99\x61\xc3\xf7\x09\x09\x19\xfa\x4a\x3b\xbf\x89\xff\x35\x34\xdf\x61\xa6\xe6\x88\x9d\x32\xec\x53\x92\xbf\x19\x1c\x5b\x68\x02\xb5\x41\xf0\x7a\xdf\x0b\xb5\x79\xda\x90\x65\xdc\x02\x27\x69\xde\xde\x4b\xba\xd1\xa5\x64\x53\xd7\xf2\xfb\x79\xe7\x88\xba\xd1\x85\x4b\xfb\xf2\x16\xcd\xf2\x04\x57\x1a\xa9\xb9\x27\x9c\x0d\xde\x0d\x94\x3d\xe6\xff\xa9\x13\x1b\x08\xc7\x39\x9d\x79\xe4\x8e\x0a\xc0\x2d\xa4\xa6\xe6\xf3\x8d\xe6\x73\x57\xbb\x41\xc0\x43\x88\x0c\x46\xfa\x1f\xef\x36\x2f\x5f\xac\x63\x16\x18\x6c\x1e\x79\xd8\x30\x36\xf4\x0b\xa9\xad\x13\xfa\xf5\xd2\x66\x6c\x83\xf5\x24\xfe\x1a\x48\xf0\x25\xfc\x55\x03\xd2\x10\x51\xdd\xce\xb8\x56\x49\xd8\x9c\x1a\x27\xbb\x91\x6f\xe6\x5e\x95\xd7\xff\x2b\x5e\x29\x53\x9a\x89\x1e\xaf\x6b\xd1\xa9\x8d\xa3\xd9\xc2\x7d\x3a\xac\x93\x8a\x8c\x54\x79\x26\x3b\xc7\x85\x59\x2e\xb1\xec\x47\x6d\x58\xa4\x34\x99\x86\x26\x76\xde\x2a\x04\xdc\xff\xa7\x85\x35\xee\xc6\xfd\x3b\x6b\xaa\x86\x33\xc7\xbe\x7c\x49\xb4\x8f\x6c\x4d", 244);
        			syscall(SYS_pread, r[2], 0x20000140ul, 0xf4ul, 9ul);
        			syscall(SYS_vfork);
        		*(uint64_t*)0x20000540 = 0x20000240;
        		*(uint32_t*)0x20000548 = 0xc;
        		*(uint64_t*)0x20000550 = 0x20000400;
        		*(uint64_t*)0x20000400 = 0x20000280;
        		*(uint64_t*)0x20000408 = 0x51;
        		*(uint64_t*)0x20000410 = 0x20000300;
        		*(uint64_t*)0x20000418 = 0x15;
        		*(uint64_t*)0x20000420 = 0x20000340;
        		*(uint64_t*)0x20000428 = 0x6a;
        		*(uint64_t*)0x20000430 = 0x200003c0;
        		*(uint64_t*)0x20000438 = 0x18;
        		*(uint64_t*)0x20000558 = 4;
        		*(uint64_t*)0x20000560 = 0x20000440;
        		*(uint64_t*)0x20000568 = 0xc4;
        		*(uint32_t*)0x20000570 = 0;
        			syscall(SYS_recvmsg, -1, 0x20000540ul, 1ul);
        		memcpy((void*)0x20000580, "./file0\000", 8);
        		*(uint64_t*)0x200005c0 = 1;
        		*(uint64_t*)0x200005c8 = 8;
        		*(uint64_t*)0x200005d0 = 8;
        		*(uint64_t*)0x200005d8 = 0xb138;
        			syscall(SYS_utimes, 0x20000580ul, 0x200005c0ul);
        			syscall(SYS_socket, 0x18ul, 5ul, 4);
        		*(uint32_t*)0x20000680 = 0;
        			syscall(SYS_paccept, -1, 0ul, 0x20000680ul, 0x20000000ul);
        		memcpy((void*)0x20000000, "\xa1\xe8\x30\x85\xdf\x3a\xb0\xe9\xd9\xcc\xa6\x23\x4e\xa2\x7c\x5b\xf3\x72\xec\x40\xed\x1d\x05\x39\xd0\xf2\x29\xfb\x91\x9e\xac\xbd\x15\xc4\xf2\x02\x51\x7a\xf5\xad\x8d\xd6\x71\xd6\xa6\x2a\x1d\x43\x54\x40\xbd\x7e\xe3\xa7\x17\x43\x8e\xbe\x25\x6e\x15\x63\x24\x59\xb3\xa0\x37\x5b\xee\xe0\x8e\x6c\x82\x62\x0a\xa5\x27\x49\x58\x29\xdd\x92\x3f\x5f\x95\xf8\x60\x1a\x31\x3a\xa7\x15\x26\xa4\x7e\x13\xea\x19\xab\x76\xf2\x43\x3a\xf4\x7d\x50\x2d\x16\xa6\x43\x89\xbd\x23\xba\xcc\xe1\x4f\x0c\x30\xed\x11\x00\x30\x0a\xc9\x9d\x9d\xc8\x35\xd6\xa4\x24\x64\xba\xe4\xcd\x08\x0d\x11\x0c\xe7\x9d\xde\x1e\xce\xfe\x47\x98\x4f\x92\x42\xc2\x60\x8c\xef\xb9\xee\x6d\xee\x05\x66\xfe\x85\xfa\x59\x74\x2e\x9c\x23\x7f\x37\x08\x57\x43\xa4\x38\x2d\xee\x82\xc7\xf0\x6c\xc2\x0a\x33\x97\xfe\x5b\xd7\xc2\x2f\x48\x47\xff\xf3\x85\x23\x97\x69\x43\x93\xcd\x25\x08\xb8\x6a\xf6\xb6\xea", 209);
        		memcpy((void*)0x20000100, "\x66\x0f\x38\x3f\x8b\x00\x00\x00\x00\x36\x26\x42\xf9\xf3\xaf\xc4\xc3\x69\x6f\xef\xeb\xc4\x63\x7d\x06\x4c\x9c\x00\x98\xd8\x88\x00\x00\x00\x00\x42\xaf\xc4\x61\x78\x2e\x79\xcb\x41\x0f\x38\x05\x7d\xd1\xc4\x42\x79\x35\x04\xf9", 55);
        			syz_execute_func(0x20000100);
        		memcpy((void*)0x20000180, "\xf3\x38\xa8\x16\x3b\x89\xa7\xb3\x06\x56\xed\x66\xc3\x91\xe9\x73\xb0\x01\x28\x53\xcf\xb4\x8c\xa3\x31\x65\xac\xb8\x91\xff\x9f\x03\xd9\xb7\x91\xb0\xbf\x11\x71\x9e\xb3\x8a\x83\xdd\x12\xf1\xfc\x41\xfc\x6f\x47\x06\x7d\x1f\xaa\xe2\xfa\xd4\x92\xd4\xdf\x84\xb8\x1e\x59\x8c\x4b\x3a\x8c\x03\x36\x0b\x02\xe6\xcf\x43\xcb", 77);
        		memcpy((void*)0x20000200, "\x5f\xe3\x1f\x90\x19\xe3\x39\x91\x8b\x88\x16\xc1\xf7\x6e\x6c\x58\xee\x4b\x2d\xc8\x81\xa8\x8a\xa3\xe1\x62\x53\xa3\xff\x98\x10\x6b\xca\x2f\x40\x45\xdf\x2b\x88\xe8\x2c\x3c\x55\x83\x0e\x85\x4d\xb3\xd4\x84\xb1\xb0\xec\x71\x59\xa2\x3f\x91\x6d\x94\x15\xf1\xc5\x52\x40\x60\x4f\xb1\xa1\x74\x94\x42\xec\x29\x80\xda\xb1\x6f\xaa\xec\x91\x3e\x05\xdd\xc2\xc8\x1b\xbd\xc9\xfa\x20\x97\x5a\xf9\x53\xc5\xa2\x70\x89\x2f\x4d\xce\x5a\x79\x5a\x2a\xc5", 107);
        			res = syz_usb_connect(0xffff, 0x4d, 0x20000180, 0x20000200);
        			if (res != -1)
        				r[3] = res;
        			syz_usb_disconnect(r[3]);
        		
        		}
        		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-executor292244936 -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 (0.41s)
        	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:
        		getsockopt$SO_PEERCRED(0xffffffffffffffff, 0xffff, 0x11, &(0x7f0000000040)={0x0, <r0=>0x0}, 0xc)
        		getgroups(0x4, &(0x7f0000000080)=[0xffffffffffffffff, 0xffffffffffffffff, <r1=>0xffffffffffffffff, 0xffffffffffffffff])
        		lchown(&(0x7f0000000000)='./file0\x00', r0, r1)
        		r2 = accept(0xffffffffffffff9c, &(0x7f00000000c0)=@un=@abs, &(0x7f0000000100)=0x8)
        		pread(r2, &(0x7f0000000140)="086f7ed0fc950569406a63e99961c3f7090919fa4a3bbf89ff3534df61a6e6889d32ec5392bf191c5b6802b541f07adf0bb579da9065dc022769dede4bbad1a56453d7f2fb79e788bad1854bfbf216cdf204571aa9b9279c0dde0d943de6ffa9131b08c7399d79e48e0ac02da4a6e6f38de67357bb41c043880c46fa1fef362f5fac6316186c1e79d83036f40ba9ad13faf5d2666c83f524fe1a48f025fc5503d21051ddceb85649d89c1a27bb916fe65e95d7ff2b5e29539a891eaf6bd1a98da3d9c27d3aac938a8c5479263bc785592eb1ec476d58a43499862676de2a04dcffa78535eec6fd3b6baa8633c7be7c49b48f6c4d", 0xf4, 0x9)
        		vfork()
        		recvmsg(0xffffffffffffffff, &(0x7f0000000540)={&(0x7f0000000240)=@in6, 0xc, &(0x7f0000000400)=[{&(0x7f0000000280)=""/81, 0x51}, {&(0x7f0000000300)=""/21, 0x15}, {&(0x7f0000000340)=""/106, 0x6a}, {&(0x7f00000003c0)=""/24, 0x18}], 0x4, &(0x7f0000000440)=""/196, 0xc4}, 0x1)
        		utimes(&(0x7f0000000580)='./file0\x00', &(0x7f00000005c0)={{0x1, 0x8}, {0x8, 0xb138}})
        		socket$inet6(0x18, 0x5, 0x4)
        		paccept(0xffffffffffffffff, 0x0, &(0x7f0000000680), 0x20000000)
        		syz_emit_ethernet(0xd1, &(0x7f0000000000)="a1e83085df3ab0e9d9cca6234ea27c5bf372ec40ed1d0539d0f229fb919eacbd15c4f202517af5ad8dd671d6a62a1d435440bd7ee3a717438ebe256e15632459b3a0375beee08e6c82620aa527495829dd923f5f95f8601a313aa71526a47e13ea19ab76f2433af47d502d16a64389bd23bacce14f0c30ed1100300ac99d9dc835d6a42464bae4cd080d110ce79dde1ecefe47984f9242c2608cefb9ee6dee0566fe85fa59742e9c237f37085743a4382dee82c7f06cc20a3397fe5bd7c22f4847fff3852397694393cd2508b86af6b6ea")
        		syz_execute_func(&(0x7f0000000100)="660f383f8b00000000362642f9f3afc4c3696fefebc4637d064c9c0098d8880000000042afc461782e79cb410f38057dd1c442793504f9")
        		syz_extract_tcp_res(&(0x7f0000000140), 0x4, 0x3)
        		r3 = syz_usb_connect(0xffff, 0x4d, &(0x7f0000000180)="f338a8163b89a7b30656ed66c391e973b0012853cfb48ca33165acb891ff9f03d9b791b0bf11719eb38a83dd12f1fc41fc6f47067d1faae2fad492d4df84b81e598c4b3a8c03360b02e6cf43cb", &(0x7f0000000200)="5fe31f9019e339918b8816c1f76e6c58ee4b2dc881a88aa3e16253a3ff98106bca2f4045df2b88e82c3c55830e854db3d484b1b0ec7159a23f916d9415f1c55240604fb1a1749442ec2980dab16faaec913e05ddc2c81bbdc9fa20975af953c5a270892f4dce5a795a2ac5")
        		syz_usb_disconnect(r3)
        		
        	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_accept
        		#define SYS_accept 30
        		#endif
        		#ifndef SYS_getgroups
        		#define SYS_getgroups 79
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lchown
        		#define SYS_lchown 275
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_paccept
        		#define SYS_paccept 456
        		#endif
        		#ifndef SYS_pread
        		#define SYS_pread 173
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		#ifndef SYS_vfork
        		#define SYS_vfork 66
        		#endif
        		
        		uint64_t r[4] = {0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_getsockopt, -1, 0xffff, 0x11, 0x20000040ul, 0xcul);
        				if (res != -1)
        		r[0] = *(uint32_t*)0x20000044;
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = -1;
        		*(uint32_t*)0x20000084 = -1;
        		*(uint32_t*)0x20000088 = -1;
        		*(uint32_t*)0x2000008c = -1;
        				res = syscall(SYS_getgroups, 4ul, 0x20000080ul);
        				if (res != -1)
        		r[1] = *(uint32_t*)0x20000088;
        				break;
        			case 2:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        				syscall(SYS_lchown, 0x20000000ul, r[0], r[1]);
        				break;
        			case 3:
        		*(uint32_t*)0x20000100 = 8;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200000c0ul, 0x20000100ul);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 4:
        		memcpy((void*)0x20000140, "\x08\x6f\x7e\xd0\xfc\x95\x05\x69\x40\x6a\x63\xe9\x99\x61\xc3\xf7\x09\x09\x19\xfa\x4a\x3b\xbf\x89\xff\x35\x34\xdf\x61\xa6\xe6\x88\x9d\x32\xec\x53\x92\xbf\x19\x1c\x5b\x68\x02\xb5\x41\xf0\x7a\xdf\x0b\xb5\x79\xda\x90\x65\xdc\x02\x27\x69\xde\xde\x4b\xba\xd1\xa5\x64\x53\xd7\xf2\xfb\x79\xe7\x88\xba\xd1\x85\x4b\xfb\xf2\x16\xcd\xf2\x04\x57\x1a\xa9\xb9\x27\x9c\x0d\xde\x0d\x94\x3d\xe6\xff\xa9\x13\x1b\x08\xc7\x39\x9d\x79\xe4\x8e\x0a\xc0\x2d\xa4\xa6\xe6\xf3\x8d\xe6\x73\x57\xbb\x41\xc0\x43\x88\x0c\x46\xfa\x1f\xef\x36\x2f\x5f\xac\x63\x16\x18\x6c\x1e\x79\xd8\x30\x36\xf4\x0b\xa9\xad\x13\xfa\xf5\xd2\x66\x6c\x83\xf5\x24\xfe\x1a\x48\xf0\x25\xfc\x55\x03\xd2\x10\x51\xdd\xce\xb8\x56\x49\xd8\x9c\x1a\x27\xbb\x91\x6f\xe6\x5e\x95\xd7\xff\x2b\x5e\x29\x53\x9a\x89\x1e\xaf\x6b\xd1\xa9\x8d\xa3\xd9\xc2\x7d\x3a\xac\x93\x8a\x8c\x54\x79\x26\x3b\xc7\x85\x59\x2e\xb1\xec\x47\x6d\x58\xa4\x34\x99\x86\x26\x76\xde\x2a\x04\xdc\xff\xa7\x85\x35\xee\xc6\xfd\x3b\x6b\xaa\x86\x33\xc7\xbe\x7c\x49\xb4\x8f\x6c\x4d", 244);
        				syscall(SYS_pread, r[2], 0x20000140ul, 0xf4ul, 9ul);
        				break;
        			case 5:
        				syscall(SYS_vfork);
        				break;
        			case 6:
        		*(uint64_t*)0x20000540 = 0x20000240;
        		*(uint32_t*)0x20000548 = 0xc;
        		*(uint64_t*)0x20000550 = 0x20000400;
        		*(uint64_t*)0x20000400 = 0x20000280;
        		*(uint64_t*)0x20000408 = 0x51;
        		*(uint64_t*)0x20000410 = 0x20000300;
        		*(uint64_t*)0x20000418 = 0x15;
        		*(uint64_t*)0x20000420 = 0x20000340;
        		*(uint64_t*)0x20000428 = 0x6a;
        		*(uint64_t*)0x20000430 = 0x200003c0;
        		*(uint64_t*)0x20000438 = 0x18;
        		*(uint64_t*)0x20000558 = 4;
        		*(uint64_t*)0x20000560 = 0x20000440;
        		*(uint64_t*)0x20000568 = 0xc4;
        		*(uint32_t*)0x20000570 = 0;
        				syscall(SYS_recvmsg, -1, 0x20000540ul, 1ul);
        				break;
        			case 7:
        		memcpy((void*)0x20000580, "./file0\000", 8);
        		*(uint64_t*)0x200005c0 = 1;
        		*(uint64_t*)0x200005c8 = 8;
        		*(uint64_t*)0x200005d0 = 8;
        		*(uint64_t*)0x200005d8 = 0xb138;
        				syscall(SYS_utimes, 0x20000580ul, 0x200005c0ul);
        				break;
        			case 8:
        				syscall(SYS_socket, 0x18ul, 5ul, 4);
        				break;
        			case 9:
        		*(uint32_t*)0x20000680 = 0;
        				syscall(SYS_paccept, -1, 0ul, 0x20000680ul, 0x20000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xa1\xe8\x30\x85\xdf\x3a\xb0\xe9\xd9\xcc\xa6\x23\x4e\xa2\x7c\x5b\xf3\x72\xec\x40\xed\x1d\x05\x39\xd0\xf2\x29\xfb\x91\x9e\xac\xbd\x15\xc4\xf2\x02\x51\x7a\xf5\xad\x8d\xd6\x71\xd6\xa6\x2a\x1d\x43\x54\x40\xbd\x7e\xe3\xa7\x17\x43\x8e\xbe\x25\x6e\x15\x63\x24\x59\xb3\xa0\x37\x5b\xee\xe0\x8e\x6c\x82\x62\x0a\xa5\x27\x49\x58\x29\xdd\x92\x3f\x5f\x95\xf8\x60\x1a\x31\x3a\xa7\x15\x26\xa4\x7e\x13\xea\x19\xab\x76\xf2\x43\x3a\xf4\x7d\x50\x2d\x16\xa6\x43\x89\xbd\x23\xba\xcc\xe1\x4f\x0c\x30\xed\x11\x00\x30\x0a\xc9\x9d\x9d\xc8\x35\xd6\xa4\x24\x64\xba\xe4\xcd\x08\x0d\x11\x0c\xe7\x9d\xde\x1e\xce\xfe\x47\x98\x4f\x92\x42\xc2\x60\x8c\xef\xb9\xee\x6d\xee\x05\x66\xfe\x85\xfa\x59\x74\x2e\x9c\x23\x7f\x37\x08\x57\x43\xa4\x38\x2d\xee\x82\xc7\xf0\x6c\xc2\x0a\x33\x97\xfe\x5b\xd7\xc2\x2f\x48\x47\xff\xf3\x85\x23\x97\x69\x43\x93\xcd\x25\x08\xb8\x6a\xf6\xb6\xea", 209);
        				break;
        			case 11:
        		memcpy((void*)0x20000100, "\x66\x0f\x38\x3f\x8b\x00\x00\x00\x00\x36\x26\x42\xf9\xf3\xaf\xc4\xc3\x69\x6f\xef\xeb\xc4\x63\x7d\x06\x4c\x9c\x00\x98\xd8\x88\x00\x00\x00\x00\x42\xaf\xc4\x61\x78\x2e\x79\xcb\x41\x0f\x38\x05\x7d\xd1\xc4\x42\x79\x35\x04\xf9", 55);
        				syz_execute_func(0x20000100);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000180, "\xf3\x38\xa8\x16\x3b\x89\xa7\xb3\x06\x56\xed\x66\xc3\x91\xe9\x73\xb0\x01\x28\x53\xcf\xb4\x8c\xa3\x31\x65\xac\xb8\x91\xff\x9f\x03\xd9\xb7\x91\xb0\xbf\x11\x71\x9e\xb3\x8a\x83\xdd\x12\xf1\xfc\x41\xfc\x6f\x47\x06\x7d\x1f\xaa\xe2\xfa\xd4\x92\xd4\xdf\x84\xb8\x1e\x59\x8c\x4b\x3a\x8c\x03\x36\x0b\x02\xe6\xcf\x43\xcb", 77);
        		memcpy((void*)0x20000200, "\x5f\xe3\x1f\x90\x19\xe3\x39\x91\x8b\x88\x16\xc1\xf7\x6e\x6c\x58\xee\x4b\x2d\xc8\x81\xa8\x8a\xa3\xe1\x62\x53\xa3\xff\x98\x10\x6b\xca\x2f\x40\x45\xdf\x2b\x88\xe8\x2c\x3c\x55\x83\x0e\x85\x4d\xb3\xd4\x84\xb1\xb0\xec\x71\x59\xa2\x3f\x91\x6d\x94\x15\xf1\xc5\x52\x40\x60\x4f\xb1\xa1\x74\x94\x42\xec\x29\x80\xda\xb1\x6f\xaa\xec\x91\x3e\x05\xdd\xc2\xc8\x1b\xbd\xc9\xfa\x20\x97\x5a\xf9\x53\xc5\xa2\x70\x89\x2f\x4d\xce\x5a\x79\x5a\x2a\xc5", 107);
        				res = syz_usb_connect(0xffff, 0x4d, 0x20000180, 0x20000200);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[3]);
        				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-executor266518221 -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 (0.42s)
        	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:
        		getsockopt$SO_PEERCRED(0xffffffffffffffff, 0xffff, 0x11, &(0x7f0000000040)={0x0, <r0=>0x0}, 0xc)
        		getgroups(0x4, &(0x7f0000000080)=[0xffffffffffffffff, 0xffffffffffffffff, <r1=>0xffffffffffffffff, 0xffffffffffffffff])
        		lchown(&(0x7f0000000000)='./file0\x00', r0, r1)
        		r2 = accept(0xffffffffffffff9c, &(0x7f00000000c0)=@un=@abs, &(0x7f0000000100)=0x8)
        		pread(r2, &(0x7f0000000140)="086f7ed0fc950569406a63e99961c3f7090919fa4a3bbf89ff3534df61a6e6889d32ec5392bf191c5b6802b541f07adf0bb579da9065dc022769dede4bbad1a56453d7f2fb79e788bad1854bfbf216cdf204571aa9b9279c0dde0d943de6ffa9131b08c7399d79e48e0ac02da4a6e6f38de67357bb41c043880c46fa1fef362f5fac6316186c1e79d83036f40ba9ad13faf5d2666c83f524fe1a48f025fc5503d21051ddceb85649d89c1a27bb916fe65e95d7ff2b5e29539a891eaf6bd1a98da3d9c27d3aac938a8c5479263bc785592eb1ec476d58a43499862676de2a04dcffa78535eec6fd3b6baa8633c7be7c49b48f6c4d", 0xf4, 0x9)
        		vfork()
        		recvmsg(0xffffffffffffffff, &(0x7f0000000540)={&(0x7f0000000240)=@in6, 0xc, &(0x7f0000000400)=[{&(0x7f0000000280)=""/81, 0x51}, {&(0x7f0000000300)=""/21, 0x15}, {&(0x7f0000000340)=""/106, 0x6a}, {&(0x7f00000003c0)=""/24, 0x18}], 0x4, &(0x7f0000000440)=""/196, 0xc4}, 0x1)
        		utimes(&(0x7f0000000580)='./file0\x00', &(0x7f00000005c0)={{0x1, 0x8}, {0x8, 0xb138}})
        		socket$inet6(0x18, 0x5, 0x4)
        		paccept(0xffffffffffffffff, 0x0, &(0x7f0000000680), 0x20000000)
        		syz_emit_ethernet(0xd1, &(0x7f0000000000)="a1e83085df3ab0e9d9cca6234ea27c5bf372ec40ed1d0539d0f229fb919eacbd15c4f202517af5ad8dd671d6a62a1d435440bd7ee3a717438ebe256e15632459b3a0375beee08e6c82620aa527495829dd923f5f95f8601a313aa71526a47e13ea19ab76f2433af47d502d16a64389bd23bacce14f0c30ed1100300ac99d9dc835d6a42464bae4cd080d110ce79dde1ecefe47984f9242c2608cefb9ee6dee0566fe85fa59742e9c237f37085743a4382dee82c7f06cc20a3397fe5bd7c22f4847fff3852397694393cd2508b86af6b6ea")
        		syz_execute_func(&(0x7f0000000100)="660f383f8b00000000362642f9f3afc4c3696fefebc4637d064c9c0098d8880000000042afc461782e79cb410f38057dd1c442793504f9")
        		syz_extract_tcp_res(&(0x7f0000000140), 0x4, 0x3)
        		r3 = syz_usb_connect(0xffff, 0x4d, &(0x7f0000000180)="f338a8163b89a7b30656ed66c391e973b0012853cfb48ca33165acb891ff9f03d9b791b0bf11719eb38a83dd12f1fc41fc6f47067d1faae2fad492d4df84b81e598c4b3a8c03360b02e6cf43cb", &(0x7f0000000200)="5fe31f9019e339918b8816c1f76e6c58ee4b2dc881a88aa3e16253a3ff98106bca2f4045df2b88e82c3c55830e854db3d484b1b0ec7159a23f916d9415f1c55240604fb1a1749442ec2980dab16faaec913e05ddc2c81bbdc9fa20975af953c5a270892f4dce5a795a2ac5")
        		syz_usb_disconnect(r3)
        		
        	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_accept
        		#define SYS_accept 30
        		#endif
        		#ifndef SYS_getgroups
        		#define SYS_getgroups 79
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lchown
        		#define SYS_lchown 275
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_paccept
        		#define SYS_paccept 456
        		#endif
        		#ifndef SYS_pread
        		#define SYS_pread 173
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		#ifndef SYS_vfork
        		#define SYS_vfork 66
        		#endif
        		
        		uint64_t r[4] = {0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_getsockopt, -1, 0xffff, 0x11, 0x20000040ul, 0xcul);
        				if (res != -1)
        		r[0] = *(uint32_t*)0x20000044;
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = -1;
        		*(uint32_t*)0x20000084 = -1;
        		*(uint32_t*)0x20000088 = -1;
        		*(uint32_t*)0x2000008c = -1;
        				res = syscall(SYS_getgroups, 4ul, 0x20000080ul);
        				if (res != -1)
        		r[1] = *(uint32_t*)0x20000088;
        				break;
        			case 2:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        				syscall(SYS_lchown, 0x20000000ul, r[0], r[1]);
        				break;
        			case 3:
        		*(uint32_t*)0x20000100 = 8;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200000c0ul, 0x20000100ul);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 4:
        		memcpy((void*)0x20000140, "\x08\x6f\x7e\xd0\xfc\x95\x05\x69\x40\x6a\x63\xe9\x99\x61\xc3\xf7\x09\x09\x19\xfa\x4a\x3b\xbf\x89\xff\x35\x34\xdf\x61\xa6\xe6\x88\x9d\x32\xec\x53\x92\xbf\x19\x1c\x5b\x68\x02\xb5\x41\xf0\x7a\xdf\x0b\xb5\x79\xda\x90\x65\xdc\x02\x27\x69\xde\xde\x4b\xba\xd1\xa5\x64\x53\xd7\xf2\xfb\x79\xe7\x88\xba\xd1\x85\x4b\xfb\xf2\x16\xcd\xf2\x04\x57\x1a\xa9\xb9\x27\x9c\x0d\xde\x0d\x94\x3d\xe6\xff\xa9\x13\x1b\x08\xc7\x39\x9d\x79\xe4\x8e\x0a\xc0\x2d\xa4\xa6\xe6\xf3\x8d\xe6\x73\x57\xbb\x41\xc0\x43\x88\x0c\x46\xfa\x1f\xef\x36\x2f\x5f\xac\x63\x16\x18\x6c\x1e\x79\xd8\x30\x36\xf4\x0b\xa9\xad\x13\xfa\xf5\xd2\x66\x6c\x83\xf5\x24\xfe\x1a\x48\xf0\x25\xfc\x55\x03\xd2\x10\x51\xdd\xce\xb8\x56\x49\xd8\x9c\x1a\x27\xbb\x91\x6f\xe6\x5e\x95\xd7\xff\x2b\x5e\x29\x53\x9a\x89\x1e\xaf\x6b\xd1\xa9\x8d\xa3\xd9\xc2\x7d\x3a\xac\x93\x8a\x8c\x54\x79\x26\x3b\xc7\x85\x59\x2e\xb1\xec\x47\x6d\x58\xa4\x34\x99\x86\x26\x76\xde\x2a\x04\xdc\xff\xa7\x85\x35\xee\xc6\xfd\x3b\x6b\xaa\x86\x33\xc7\xbe\x7c\x49\xb4\x8f\x6c\x4d", 244);
        				syscall(SYS_pread, r[2], 0x20000140ul, 0xf4ul, 9ul);
        				break;
        			case 5:
        				syscall(SYS_vfork);
        				break;
        			case 6:
        		*(uint64_t*)0x20000540 = 0x20000240;
        		*(uint32_t*)0x20000548 = 0xc;
        		*(uint64_t*)0x20000550 = 0x20000400;
        		*(uint64_t*)0x20000400 = 0x20000280;
        		*(uint64_t*)0x20000408 = 0x51;
        		*(uint64_t*)0x20000410 = 0x20000300;
        		*(uint64_t*)0x20000418 = 0x15;
        		*(uint64_t*)0x20000420 = 0x20000340;
        		*(uint64_t*)0x20000428 = 0x6a;
        		*(uint64_t*)0x20000430 = 0x200003c0;
        		*(uint64_t*)0x20000438 = 0x18;
        		*(uint64_t*)0x20000558 = 4;
        		*(uint64_t*)0x20000560 = 0x20000440;
        		*(uint64_t*)0x20000568 = 0xc4;
        		*(uint32_t*)0x20000570 = 0;
        				syscall(SYS_recvmsg, -1, 0x20000540ul, 1ul);
        				break;
        			case 7:
        		memcpy((void*)0x20000580, "./file0\000", 8);
        		*(uint64_t*)0x200005c0 = 1;
        		*(uint64_t*)0x200005c8 = 8;
        		*(uint64_t*)0x200005d0 = 8;
        		*(uint64_t*)0x200005d8 = 0xb138;
        				syscall(SYS_utimes, 0x20000580ul, 0x200005c0ul);
        				break;
        			case 8:
        				syscall(SYS_socket, 0x18ul, 5ul, 4);
        				break;
        			case 9:
        		*(uint32_t*)0x20000680 = 0;
        				syscall(SYS_paccept, -1, 0ul, 0x20000680ul, 0x20000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xa1\xe8\x30\x85\xdf\x3a\xb0\xe9\xd9\xcc\xa6\x23\x4e\xa2\x7c\x5b\xf3\x72\xec\x40\xed\x1d\x05\x39\xd0\xf2\x29\xfb\x91\x9e\xac\xbd\x15\xc4\xf2\x02\x51\x7a\xf5\xad\x8d\xd6\x71\xd6\xa6\x2a\x1d\x43\x54\x40\xbd\x7e\xe3\xa7\x17\x43\x8e\xbe\x25\x6e\x15\x63\x24\x59\xb3\xa0\x37\x5b\xee\xe0\x8e\x6c\x82\x62\x0a\xa5\x27\x49\x58\x29\xdd\x92\x3f\x5f\x95\xf8\x60\x1a\x31\x3a\xa7\x15\x26\xa4\x7e\x13\xea\x19\xab\x76\xf2\x43\x3a\xf4\x7d\x50\x2d\x16\xa6\x43\x89\xbd\x23\xba\xcc\xe1\x4f\x0c\x30\xed\x11\x00\x30\x0a\xc9\x9d\x9d\xc8\x35\xd6\xa4\x24\x64\xba\xe4\xcd\x08\x0d\x11\x0c\xe7\x9d\xde\x1e\xce\xfe\x47\x98\x4f\x92\x42\xc2\x60\x8c\xef\xb9\xee\x6d\xee\x05\x66\xfe\x85\xfa\x59\x74\x2e\x9c\x23\x7f\x37\x08\x57\x43\xa4\x38\x2d\xee\x82\xc7\xf0\x6c\xc2\x0a\x33\x97\xfe\x5b\xd7\xc2\x2f\x48\x47\xff\xf3\x85\x23\x97\x69\x43\x93\xcd\x25\x08\xb8\x6a\xf6\xb6\xea", 209);
        				break;
        			case 11:
        		memcpy((void*)0x20000100, "\x66\x0f\x38\x3f\x8b\x00\x00\x00\x00\x36\x26\x42\xf9\xf3\xaf\xc4\xc3\x69\x6f\xef\xeb\xc4\x63\x7d\x06\x4c\x9c\x00\x98\xd8\x88\x00\x00\x00\x00\x42\xaf\xc4\x61\x78\x2e\x79\xcb\x41\x0f\x38\x05\x7d\xd1\xc4\x42\x79\x35\x04\xf9", 55);
        				syz_execute_func(0x20000100);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000180, "\xf3\x38\xa8\x16\x3b\x89\xa7\xb3\x06\x56\xed\x66\xc3\x91\xe9\x73\xb0\x01\x28\x53\xcf\xb4\x8c\xa3\x31\x65\xac\xb8\x91\xff\x9f\x03\xd9\xb7\x91\xb0\xbf\x11\x71\x9e\xb3\x8a\x83\xdd\x12\xf1\xfc\x41\xfc\x6f\x47\x06\x7d\x1f\xaa\xe2\xfa\xd4\x92\xd4\xdf\x84\xb8\x1e\x59\x8c\x4b\x3a\x8c\x03\x36\x0b\x02\xe6\xcf\x43\xcb", 77);
        		memcpy((void*)0x20000200, "\x5f\xe3\x1f\x90\x19\xe3\x39\x91\x8b\x88\x16\xc1\xf7\x6e\x6c\x58\xee\x4b\x2d\xc8\x81\xa8\x8a\xa3\xe1\x62\x53\xa3\xff\x98\x10\x6b\xca\x2f\x40\x45\xdf\x2b\x88\xe8\x2c\x3c\x55\x83\x0e\x85\x4d\xb3\xd4\x84\xb1\xb0\xec\x71\x59\xa2\x3f\x91\x6d\x94\x15\xf1\xc5\x52\x40\x60\x4f\xb1\xa1\x74\x94\x42\xec\x29\x80\xda\xb1\x6f\xaa\xec\x91\x3e\x05\xdd\xc2\xc8\x1b\xbd\xc9\xfa\x20\x97\x5a\xf9\x53\xc5\xa2\x70\x89\x2f\x4d\xce\x5a\x79\x5a\x2a\xc5", 107);
        				res = syz_usb_connect(0xffff, 0x4d, 0x20000180, 0x20000200);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[3]);
        				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-executor666096721 -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/amd64/4 (0.42s)
        	csource_test.go:123: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:10 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:
        		getsockopt$SO_PEERCRED(0xffffffffffffffff, 0xffff, 0x11, &(0x7f0000000040)={0x0, <r0=>0x0}, 0xc)
        		getgroups(0x4, &(0x7f0000000080)=[0xffffffffffffffff, 0xffffffffffffffff, <r1=>0xffffffffffffffff, 0xffffffffffffffff])
        		lchown(&(0x7f0000000000)='./file0\x00', r0, r1)
        		r2 = accept(0xffffffffffffff9c, &(0x7f00000000c0)=@un=@abs, &(0x7f0000000100)=0x8)
        		pread(r2, &(0x7f0000000140)="086f7ed0fc950569406a63e99961c3f7090919fa4a3bbf89ff3534df61a6e6889d32ec5392bf191c5b6802b541f07adf0bb579da9065dc022769dede4bbad1a56453d7f2fb79e788bad1854bfbf216cdf204571aa9b9279c0dde0d943de6ffa9131b08c7399d79e48e0ac02da4a6e6f38de67357bb41c043880c46fa1fef362f5fac6316186c1e79d83036f40ba9ad13faf5d2666c83f524fe1a48f025fc5503d21051ddceb85649d89c1a27bb916fe65e95d7ff2b5e29539a891eaf6bd1a98da3d9c27d3aac938a8c5479263bc785592eb1ec476d58a43499862676de2a04dcffa78535eec6fd3b6baa8633c7be7c49b48f6c4d", 0xf4, 0x9)
        		vfork()
        		recvmsg(0xffffffffffffffff, &(0x7f0000000540)={&(0x7f0000000240)=@in6, 0xc, &(0x7f0000000400)=[{&(0x7f0000000280)=""/81, 0x51}, {&(0x7f0000000300)=""/21, 0x15}, {&(0x7f0000000340)=""/106, 0x6a}, {&(0x7f00000003c0)=""/24, 0x18}], 0x4, &(0x7f0000000440)=""/196, 0xc4}, 0x1)
        		utimes(&(0x7f0000000580)='./file0\x00', &(0x7f00000005c0)={{0x1, 0x8}, {0x8, 0xb138}})
        		socket$inet6(0x18, 0x5, 0x4)
        		paccept(0xffffffffffffffff, 0x0, &(0x7f0000000680), 0x20000000)
        		syz_emit_ethernet(0xd1, &(0x7f0000000000)="a1e83085df3ab0e9d9cca6234ea27c5bf372ec40ed1d0539d0f229fb919eacbd15c4f202517af5ad8dd671d6a62a1d435440bd7ee3a717438ebe256e15632459b3a0375beee08e6c82620aa527495829dd923f5f95f8601a313aa71526a47e13ea19ab76f2433af47d502d16a64389bd23bacce14f0c30ed1100300ac99d9dc835d6a42464bae4cd080d110ce79dde1ecefe47984f9242c2608cefb9ee6dee0566fe85fa59742e9c237f37085743a4382dee82c7f06cc20a3397fe5bd7c22f4847fff3852397694393cd2508b86af6b6ea")
        		syz_execute_func(&(0x7f0000000100)="660f383f8b00000000362642f9f3afc4c3696fefebc4637d064c9c0098d8880000000042afc461782e79cb410f38057dd1c442793504f9")
        		syz_extract_tcp_res(&(0x7f0000000140), 0x4, 0x3)
        		r3 = syz_usb_connect(0xffff, 0x4d, &(0x7f0000000180)="f338a8163b89a7b30656ed66c391e973b0012853cfb48ca33165acb891ff9f03d9b791b0bf11719eb38a83dd12f1fc41fc6f47067d1faae2fad492d4df84b81e598c4b3a8c03360b02e6cf43cb", &(0x7f0000000200)="5fe31f9019e339918b8816c1f76e6c58ee4b2dc881a88aa3e16253a3ff98106bca2f4045df2b88e82c3c55830e854db3d484b1b0ec7159a23f916d9415f1c55240604fb1a1749442ec2980dab16faaec913e05ddc2c81bbdc9fa20975af953c5a270892f4dce5a795a2ac5")
        		syz_usb_disconnect(r3)
        		
        	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 < 10; 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_accept
        		#define SYS_accept 30
        		#endif
        		#ifndef SYS_getgroups
        		#define SYS_getgroups 79
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lchown
        		#define SYS_lchown 275
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_paccept
        		#define SYS_paccept 456
        		#endif
        		#ifndef SYS_pread
        		#define SYS_pread 173
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		#ifndef SYS_vfork
        		#define SYS_vfork 66
        		#endif
        		
        		uint64_t r[4] = {0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_getsockopt, -1, 0xffff, 0x11, 0x20000040ul, 0xcul);
        				if (res != -1)
        		r[0] = *(uint32_t*)0x20000044;
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = -1;
        		*(uint32_t*)0x20000084 = -1;
        		*(uint32_t*)0x20000088 = -1;
        		*(uint32_t*)0x2000008c = -1;
        				res = syscall(SYS_getgroups, 4ul, 0x20000080ul);
        				if (res != -1)
        		r[1] = *(uint32_t*)0x20000088;
        				break;
        			case 2:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        				syscall(SYS_lchown, 0x20000000ul, r[0], r[1]);
        				break;
        			case 3:
        		*(uint32_t*)0x20000100 = 8;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200000c0ul, 0x20000100ul);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 4:
        		memcpy((void*)0x20000140, "\x08\x6f\x7e\xd0\xfc\x95\x05\x69\x40\x6a\x63\xe9\x99\x61\xc3\xf7\x09\x09\x19\xfa\x4a\x3b\xbf\x89\xff\x35\x34\xdf\x61\xa6\xe6\x88\x9d\x32\xec\x53\x92\xbf\x19\x1c\x5b\x68\x02\xb5\x41\xf0\x7a\xdf\x0b\xb5\x79\xda\x90\x65\xdc\x02\x27\x69\xde\xde\x4b\xba\xd1\xa5\x64\x53\xd7\xf2\xfb\x79\xe7\x88\xba\xd1\x85\x4b\xfb\xf2\x16\xcd\xf2\x04\x57\x1a\xa9\xb9\x27\x9c\x0d\xde\x0d\x94\x3d\xe6\xff\xa9\x13\x1b\x08\xc7\x39\x9d\x79\xe4\x8e\x0a\xc0\x2d\xa4\xa6\xe6\xf3\x8d\xe6\x73\x57\xbb\x41\xc0\x43\x88\x0c\x46\xfa\x1f\xef\x36\x2f\x5f\xac\x63\x16\x18\x6c\x1e\x79\xd8\x30\x36\xf4\x0b\xa9\xad\x13\xfa\xf5\xd2\x66\x6c\x83\xf5\x24\xfe\x1a\x48\xf0\x25\xfc\x55\x03\xd2\x10\x51\xdd\xce\xb8\x56\x49\xd8\x9c\x1a\x27\xbb\x91\x6f\xe6\x5e\x95\xd7\xff\x2b\x5e\x29\x53\x9a\x89\x1e\xaf\x6b\xd1\xa9\x8d\xa3\xd9\xc2\x7d\x3a\xac\x93\x8a\x8c\x54\x79\x26\x3b\xc7\x85\x59\x2e\xb1\xec\x47\x6d\x58\xa4\x34\x99\x86\x26\x76\xde\x2a\x04\xdc\xff\xa7\x85\x35\xee\xc6\xfd\x3b\x6b\xaa\x86\x33\xc7\xbe\x7c\x49\xb4\x8f\x6c\x4d", 244);
        				syscall(SYS_pread, r[2], 0x20000140ul, 0xf4ul, 9ul);
        				break;
        			case 5:
        				syscall(SYS_vfork);
        				break;
        			case 6:
        		*(uint64_t*)0x20000540 = 0x20000240;
        		*(uint32_t*)0x20000548 = 0xc;
        		*(uint64_t*)0x20000550 = 0x20000400;
        		*(uint64_t*)0x20000400 = 0x20000280;
        		*(uint64_t*)0x20000408 = 0x51;
        		*(uint64_t*)0x20000410 = 0x20000300;
        		*(uint64_t*)0x20000418 = 0x15;
        		*(uint64_t*)0x20000420 = 0x20000340;
        		*(uint64_t*)0x20000428 = 0x6a;
        		*(uint64_t*)0x20000430 = 0x200003c0;
        		*(uint64_t*)0x20000438 = 0x18;
        		*(uint64_t*)0x20000558 = 4;
        		*(uint64_t*)0x20000560 = 0x20000440;
        		*(uint64_t*)0x20000568 = 0xc4;
        		*(uint32_t*)0x20000570 = 0;
        				syscall(SYS_recvmsg, -1, 0x20000540ul, 1ul);
        				break;
        			case 7:
        		memcpy((void*)0x20000580, "./file0\000", 8);
        		*(uint64_t*)0x200005c0 = 1;
        		*(uint64_t*)0x200005c8 = 8;
        		*(uint64_t*)0x200005d0 = 8;
        		*(uint64_t*)0x200005d8 = 0xb138;
        				syscall(SYS_utimes, 0x20000580ul, 0x200005c0ul);
        				break;
        			case 8:
        				syscall(SYS_socket, 0x18ul, 5ul, 4);
        				break;
        			case 9:
        		*(uint32_t*)0x20000680 = 0;
        				syscall(SYS_paccept, -1, 0ul, 0x20000680ul, 0x20000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xa1\xe8\x30\x85\xdf\x3a\xb0\xe9\xd9\xcc\xa6\x23\x4e\xa2\x7c\x5b\xf3\x72\xec\x40\xed\x1d\x05\x39\xd0\xf2\x29\xfb\x91\x9e\xac\xbd\x15\xc4\xf2\x02\x51\x7a\xf5\xad\x8d\xd6\x71\xd6\xa6\x2a\x1d\x43\x54\x40\xbd\x7e\xe3\xa7\x17\x43\x8e\xbe\x25\x6e\x15\x63\x24\x59\xb3\xa0\x37\x5b\xee\xe0\x8e\x6c\x82\x62\x0a\xa5\x27\x49\x58\x29\xdd\x92\x3f\x5f\x95\xf8\x60\x1a\x31\x3a\xa7\x15\x26\xa4\x7e\x13\xea\x19\xab\x76\xf2\x43\x3a\xf4\x7d\x50\x2d\x16\xa6\x43\x89\xbd\x23\xba\xcc\xe1\x4f\x0c\x30\xed\x11\x00\x30\x0a\xc9\x9d\x9d\xc8\x35\xd6\xa4\x24\x64\xba\xe4\xcd\x08\x0d\x11\x0c\xe7\x9d\xde\x1e\xce\xfe\x47\x98\x4f\x92\x42\xc2\x60\x8c\xef\xb9\xee\x6d\xee\x05\x66\xfe\x85\xfa\x59\x74\x2e\x9c\x23\x7f\x37\x08\x57\x43\xa4\x38\x2d\xee\x82\xc7\xf0\x6c\xc2\x0a\x33\x97\xfe\x5b\xd7\xc2\x2f\x48\x47\xff\xf3\x85\x23\x97\x69\x43\x93\xcd\x25\x08\xb8\x6a\xf6\xb6\xea", 209);
        				break;
        			case 11:
        		memcpy((void*)0x20000100, "\x66\x0f\x38\x3f\x8b\x00\x00\x00\x00\x36\x26\x42\xf9\xf3\xaf\xc4\xc3\x69\x6f\xef\xeb\xc4\x63\x7d\x06\x4c\x9c\x00\x98\xd8\x88\x00\x00\x00\x00\x42\xaf\xc4\x61\x78\x2e\x79\xcb\x41\x0f\x38\x05\x7d\xd1\xc4\x42\x79\x35\x04\xf9", 55);
        				syz_execute_func(0x20000100);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000180, "\xf3\x38\xa8\x16\x3b\x89\xa7\xb3\x06\x56\xed\x66\xc3\x91\xe9\x73\xb0\x01\x28\x53\xcf\xb4\x8c\xa3\x31\x65\xac\xb8\x91\xff\x9f\x03\xd9\xb7\x91\xb0\xbf\x11\x71\x9e\xb3\x8a\x83\xdd\x12\xf1\xfc\x41\xfc\x6f\x47\x06\x7d\x1f\xaa\xe2\xfa\xd4\x92\xd4\xdf\x84\xb8\x1e\x59\x8c\x4b\x3a\x8c\x03\x36\x0b\x02\xe6\xcf\x43\xcb", 77);
        		memcpy((void*)0x20000200, "\x5f\xe3\x1f\x90\x19\xe3\x39\x91\x8b\x88\x16\xc1\xf7\x6e\x6c\x58\xee\x4b\x2d\xc8\x81\xa8\x8a\xa3\xe1\x62\x53\xa3\xff\x98\x10\x6b\xca\x2f\x40\x45\xdf\x2b\x88\xe8\x2c\x3c\x55\x83\x0e\x85\x4d\xb3\xd4\x84\xb1\xb0\xec\x71\x59\xa2\x3f\x91\x6d\x94\x15\xf1\xc5\x52\x40\x60\x4f\xb1\xa1\x74\x94\x42\xec\x29\x80\xda\xb1\x6f\xaa\xec\x91\x3e\x05\xdd\xc2\xc8\x1b\xbd\xc9\xfa\x20\x97\x5a\xf9\x53\xc5\xa2\x70\x89\x2f\x4d\xce\x5a\x79\x5a\x2a\xc5", 107);
        				res = syz_usb_connect(0xffff, 0x4d, 0x20000180, 0x20000200);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[3]);
        				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-executor090974266 -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 (0.25s)
        	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:
        		getsockopt$SO_PEERCRED(0xffffffffffffffff, 0xffff, 0x11, &(0x7f0000000040)={0x0, <r0=>0x0}, 0xc)
        		getgroups(0x4, &(0x7f0000000080)=[0xffffffffffffffff, 0xffffffffffffffff, <r1=>0xffffffffffffffff, 0xffffffffffffffff])
        		lchown(&(0x7f0000000000)='./file0\x00', r0, r1)
        		r2 = accept(0xffffffffffffff9c, &(0x7f00000000c0)=@un=@abs, &(0x7f0000000100)=0x8)
        		pread(r2, &(0x7f0000000140)="086f7ed0fc950569406a63e99961c3f7090919fa4a3bbf89ff3534df61a6e6889d32ec5392bf191c5b6802b541f07adf0bb579da9065dc022769dede4bbad1a56453d7f2fb79e788bad1854bfbf216cdf204571aa9b9279c0dde0d943de6ffa9131b08c7399d79e48e0ac02da4a6e6f38de67357bb41c043880c46fa1fef362f5fac6316186c1e79d83036f40ba9ad13faf5d2666c83f524fe1a48f025fc5503d21051ddceb85649d89c1a27bb916fe65e95d7ff2b5e29539a891eaf6bd1a98da3d9c27d3aac938a8c5479263bc785592eb1ec476d58a43499862676de2a04dcffa78535eec6fd3b6baa8633c7be7c49b48f6c4d", 0xf4, 0x9)
        		vfork()
        		recvmsg(0xffffffffffffffff, &(0x7f0000000540)={&(0x7f0000000240)=@in6, 0xc, &(0x7f0000000400)=[{&(0x7f0000000280)=""/81, 0x51}, {&(0x7f0000000300)=""/21, 0x15}, {&(0x7f0000000340)=""/106, 0x6a}, {&(0x7f00000003c0)=""/24, 0x18}], 0x4, &(0x7f0000000440)=""/196, 0xc4}, 0x1)
        		utimes(&(0x7f0000000580)='./file0\x00', &(0x7f00000005c0)={{0x1, 0x8}, {0x8, 0xb138}})
        		socket$inet6(0x18, 0x5, 0x4)
        		paccept(0xffffffffffffffff, 0x0, &(0x7f0000000680), 0x20000000)
        		syz_emit_ethernet(0xd1, &(0x7f0000000000)="a1e83085df3ab0e9d9cca6234ea27c5bf372ec40ed1d0539d0f229fb919eacbd15c4f202517af5ad8dd671d6a62a1d435440bd7ee3a717438ebe256e15632459b3a0375beee08e6c82620aa527495829dd923f5f95f8601a313aa71526a47e13ea19ab76f2433af47d502d16a64389bd23bacce14f0c30ed1100300ac99d9dc835d6a42464bae4cd080d110ce79dde1ecefe47984f9242c2608cefb9ee6dee0566fe85fa59742e9c237f37085743a4382dee82c7f06cc20a3397fe5bd7c22f4847fff3852397694393cd2508b86af6b6ea")
        		syz_execute_func(&(0x7f0000000100)="660f383f8b00000000362642f9f3afc4c3696fefebc4637d064c9c0098d8880000000042afc461782e79cb410f38057dd1c442793504f9")
        		syz_extract_tcp_res(&(0x7f0000000140), 0x4, 0x3)
        		r3 = syz_usb_connect(0xffff, 0x4d, &(0x7f0000000180)="f338a8163b89a7b30656ed66c391e973b0012853cfb48ca33165acb891ff9f03d9b791b0bf11719eb38a83dd12f1fc41fc6f47067d1faae2fad492d4df84b81e598c4b3a8c03360b02e6cf43cb", &(0x7f0000000200)="5fe31f9019e339918b8816c1f76e6c58ee4b2dc881a88aa3e16253a3ff98106bca2f4045df2b88e82c3c55830e854db3d484b1b0ec7159a23f916d9415f1c55240604fb1a1749442ec2980dab16faaec913e05ddc2c81bbdc9fa20975af953c5a270892f4dce5a795a2ac5")
        		syz_usb_disconnect(r3)
        		
        	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_accept
        		#define SYS_accept 30
        		#endif
        		#ifndef SYS_getgroups
        		#define SYS_getgroups 79
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lchown
        		#define SYS_lchown 275
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_paccept
        		#define SYS_paccept 456
        		#endif
        		#ifndef SYS_pread
        		#define SYS_pread 173
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		#ifndef SYS_vfork
        		#define SYS_vfork 66
        		#endif
        		
        		uint64_t r[4] = {0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_getsockopt, -1, 0xffff, 0x11, 0x20000040ul, 0xcul);
        				if (res != -1)
        		r[0] = *(uint32_t*)0x20000044;
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = -1;
        		*(uint32_t*)0x20000084 = -1;
        		*(uint32_t*)0x20000088 = -1;
        		*(uint32_t*)0x2000008c = -1;
        				res = syscall(SYS_getgroups, 4ul, 0x20000080ul);
        				if (res != -1)
        		r[1] = *(uint32_t*)0x20000088;
        				break;
        			case 2:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        				syscall(SYS_lchown, 0x20000000ul, r[0], r[1]);
        				break;
        			case 3:
        		*(uint32_t*)0x20000100 = 8;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200000c0ul, 0x20000100ul);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 4:
        		memcpy((void*)0x20000140, "\x08\x6f\x7e\xd0\xfc\x95\x05\x69\x40\x6a\x63\xe9\x99\x61\xc3\xf7\x09\x09\x19\xfa\x4a\x3b\xbf\x89\xff\x35\x34\xdf\x61\xa6\xe6\x88\x9d\x32\xec\x53\x92\xbf\x19\x1c\x5b\x68\x02\xb5\x41\xf0\x7a\xdf\x0b\xb5\x79\xda\x90\x65\xdc\x02\x27\x69\xde\xde\x4b\xba\xd1\xa5\x64\x53\xd7\xf2\xfb\x79\xe7\x88\xba\xd1\x85\x4b\xfb\xf2\x16\xcd\xf2\x04\x57\x1a\xa9\xb9\x27\x9c\x0d\xde\x0d\x94\x3d\xe6\xff\xa9\x13\x1b\x08\xc7\x39\x9d\x79\xe4\x8e\x0a\xc0\x2d\xa4\xa6\xe6\xf3\x8d\xe6\x73\x57\xbb\x41\xc0\x43\x88\x0c\x46\xfa\x1f\xef\x36\x2f\x5f\xac\x63\x16\x18\x6c\x1e\x79\xd8\x30\x36\xf4\x0b\xa9\xad\x13\xfa\xf5\xd2\x66\x6c\x83\xf5\x24\xfe\x1a\x48\xf0\x25\xfc\x55\x03\xd2\x10\x51\xdd\xce\xb8\x56\x49\xd8\x9c\x1a\x27\xbb\x91\x6f\xe6\x5e\x95\xd7\xff\x2b\x5e\x29\x53\x9a\x89\x1e\xaf\x6b\xd1\xa9\x8d\xa3\xd9\xc2\x7d\x3a\xac\x93\x8a\x8c\x54\x79\x26\x3b\xc7\x85\x59\x2e\xb1\xec\x47\x6d\x58\xa4\x34\x99\x86\x26\x76\xde\x2a\x04\xdc\xff\xa7\x85\x35\xee\xc6\xfd\x3b\x6b\xaa\x86\x33\xc7\xbe\x7c\x49\xb4\x8f\x6c\x4d", 244);
        				syscall(SYS_pread, r[2], 0x20000140ul, 0xf4ul, 9ul);
        				break;
        			case 5:
        				syscall(SYS_vfork);
        				break;
        			case 6:
        		*(uint64_t*)0x20000540 = 0x20000240;
        		*(uint32_t*)0x20000548 = 0xc;
        		*(uint64_t*)0x20000550 = 0x20000400;
        		*(uint64_t*)0x20000400 = 0x20000280;
        		*(uint64_t*)0x20000408 = 0x51;
        		*(uint64_t*)0x20000410 = 0x20000300;
        		*(uint64_t*)0x20000418 = 0x15;
        		*(uint64_t*)0x20000420 = 0x20000340;
        		*(uint64_t*)0x20000428 = 0x6a;
        		*(uint64_t*)0x20000430 = 0x200003c0;
        		*(uint64_t*)0x20000438 = 0x18;
        		*(uint64_t*)0x20000558 = 4;
        		*(uint64_t*)0x20000560 = 0x20000440;
        		*(uint64_t*)0x20000568 = 0xc4;
        		*(uint32_t*)0x20000570 = 0;
        				syscall(SYS_recvmsg, -1, 0x20000540ul, 1ul);
        				break;
        			case 7:
        		memcpy((void*)0x20000580, "./file0\000", 8);
        		*(uint64_t*)0x200005c0 = 1;
        		*(uint64_t*)0x200005c8 = 8;
        		*(uint64_t*)0x200005d0 = 8;
        		*(uint64_t*)0x200005d8 = 0xb138;
        				syscall(SYS_utimes, 0x20000580ul, 0x200005c0ul);
        				break;
        			case 8:
        				syscall(SYS_socket, 0x18ul, 5ul, 4);
        				break;
        			case 9:
        		*(uint32_t*)0x20000680 = 0;
        				syscall(SYS_paccept, -1, 0ul, 0x20000680ul, 0x20000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xa1\xe8\x30\x85\xdf\x3a\xb0\xe9\xd9\xcc\xa6\x23\x4e\xa2\x7c\x5b\xf3\x72\xec\x40\xed\x1d\x05\x39\xd0\xf2\x29\xfb\x91\x9e\xac\xbd\x15\xc4\xf2\x02\x51\x7a\xf5\xad\x8d\xd6\x71\xd6\xa6\x2a\x1d\x43\x54\x40\xbd\x7e\xe3\xa7\x17\x43\x8e\xbe\x25\x6e\x15\x63\x24\x59\xb3\xa0\x37\x5b\xee\xe0\x8e\x6c\x82\x62\x0a\xa5\x27\x49\x58\x29\xdd\x92\x3f\x5f\x95\xf8\x60\x1a\x31\x3a\xa7\x15\x26\xa4\x7e\x13\xea\x19\xab\x76\xf2\x43\x3a\xf4\x7d\x50\x2d\x16\xa6\x43\x89\xbd\x23\xba\xcc\xe1\x4f\x0c\x30\xed\x11\x00\x30\x0a\xc9\x9d\x9d\xc8\x35\xd6\xa4\x24\x64\xba\xe4\xcd\x08\x0d\x11\x0c\xe7\x9d\xde\x1e\xce\xfe\x47\x98\x4f\x92\x42\xc2\x60\x8c\xef\xb9\xee\x6d\xee\x05\x66\xfe\x85\xfa\x59\x74\x2e\x9c\x23\x7f\x37\x08\x57\x43\xa4\x38\x2d\xee\x82\xc7\xf0\x6c\xc2\x0a\x33\x97\xfe\x5b\xd7\xc2\x2f\x48\x47\xff\xf3\x85\x23\x97\x69\x43\x93\xcd\x25\x08\xb8\x6a\xf6\xb6\xea", 209);
        				break;
        			case 11:
        		memcpy((void*)0x20000100, "\x66\x0f\x38\x3f\x8b\x00\x00\x00\x00\x36\x26\x42\xf9\xf3\xaf\xc4\xc3\x69\x6f\xef\xeb\xc4\x63\x7d\x06\x4c\x9c\x00\x98\xd8\x88\x00\x00\x00\x00\x42\xaf\xc4\x61\x78\x2e\x79\xcb\x41\x0f\x38\x05\x7d\xd1\xc4\x42\x79\x35\x04\xf9", 55);
        				syz_execute_func(0x20000100);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000180, "\xf3\x38\xa8\x16\x3b\x89\xa7\xb3\x06\x56\xed\x66\xc3\x91\xe9\x73\xb0\x01\x28\x53\xcf\xb4\x8c\xa3\x31\x65\xac\xb8\x91\xff\x9f\x03\xd9\xb7\x91\xb0\xbf\x11\x71\x9e\xb3\x8a\x83\xdd\x12\xf1\xfc\x41\xfc\x6f\x47\x06\x7d\x1f\xaa\xe2\xfa\xd4\x92\xd4\xdf\x84\xb8\x1e\x59\x8c\x4b\x3a\x8c\x03\x36\x0b\x02\xe6\xcf\x43\xcb", 77);
        		memcpy((void*)0x20000200, "\x5f\xe3\x1f\x90\x19\xe3\x39\x91\x8b\x88\x16\xc1\xf7\x6e\x6c\x58\xee\x4b\x2d\xc8\x81\xa8\x8a\xa3\xe1\x62\x53\xa3\xff\x98\x10\x6b\xca\x2f\x40\x45\xdf\x2b\x88\xe8\x2c\x3c\x55\x83\x0e\x85\x4d\xb3\xd4\x84\xb1\xb0\xec\x71\x59\xa2\x3f\x91\x6d\x94\x15\xf1\xc5\x52\x40\x60\x4f\xb1\xa1\x74\x94\x42\xec\x29\x80\xda\xb1\x6f\xaa\xec\x91\x3e\x05\xdd\xc2\xc8\x1b\xbd\xc9\xfa\x20\x97\x5a\xf9\x53\xc5\xa2\x70\x89\x2f\x4d\xce\x5a\x79\x5a\x2a\xc5", 107);
        				res = syz_usb_connect(0xffff, 0x4d, 0x20000180, 0x20000200);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[3]);
        				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-executor275399548 -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/amd64/3 (0.26s)
        	csource_test.go:123: opts: {Threaded:true Collide:false Repeat:false 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:
        		getsockopt$SO_PEERCRED(0xffffffffffffffff, 0xffff, 0x11, &(0x7f0000000040)={0x0, <r0=>0x0}, 0xc)
        		getgroups(0x4, &(0x7f0000000080)=[0xffffffffffffffff, 0xffffffffffffffff, <r1=>0xffffffffffffffff, 0xffffffffffffffff])
        		lchown(&(0x7f0000000000)='./file0\x00', r0, r1)
        		r2 = accept(0xffffffffffffff9c, &(0x7f00000000c0)=@un=@abs, &(0x7f0000000100)=0x8)
        		pread(r2, &(0x7f0000000140)="086f7ed0fc950569406a63e99961c3f7090919fa4a3bbf89ff3534df61a6e6889d32ec5392bf191c5b6802b541f07adf0bb579da9065dc022769dede4bbad1a56453d7f2fb79e788bad1854bfbf216cdf204571aa9b9279c0dde0d943de6ffa9131b08c7399d79e48e0ac02da4a6e6f38de67357bb41c043880c46fa1fef362f5fac6316186c1e79d83036f40ba9ad13faf5d2666c83f524fe1a48f025fc5503d21051ddceb85649d89c1a27bb916fe65e95d7ff2b5e29539a891eaf6bd1a98da3d9c27d3aac938a8c5479263bc785592eb1ec476d58a43499862676de2a04dcffa78535eec6fd3b6baa8633c7be7c49b48f6c4d", 0xf4, 0x9)
        		vfork()
        		recvmsg(0xffffffffffffffff, &(0x7f0000000540)={&(0x7f0000000240)=@in6, 0xc, &(0x7f0000000400)=[{&(0x7f0000000280)=""/81, 0x51}, {&(0x7f0000000300)=""/21, 0x15}, {&(0x7f0000000340)=""/106, 0x6a}, {&(0x7f00000003c0)=""/24, 0x18}], 0x4, &(0x7f0000000440)=""/196, 0xc4}, 0x1)
        		utimes(&(0x7f0000000580)='./file0\x00', &(0x7f00000005c0)={{0x1, 0x8}, {0x8, 0xb138}})
        		socket$inet6(0x18, 0x5, 0x4)
        		paccept(0xffffffffffffffff, 0x0, &(0x7f0000000680), 0x20000000)
        		syz_emit_ethernet(0xd1, &(0x7f0000000000)="a1e83085df3ab0e9d9cca6234ea27c5bf372ec40ed1d0539d0f229fb919eacbd15c4f202517af5ad8dd671d6a62a1d435440bd7ee3a717438ebe256e15632459b3a0375beee08e6c82620aa527495829dd923f5f95f8601a313aa71526a47e13ea19ab76f2433af47d502d16a64389bd23bacce14f0c30ed1100300ac99d9dc835d6a42464bae4cd080d110ce79dde1ecefe47984f9242c2608cefb9ee6dee0566fe85fa59742e9c237f37085743a4382dee82c7f06cc20a3397fe5bd7c22f4847fff3852397694393cd2508b86af6b6ea")
        		syz_execute_func(&(0x7f0000000100)="660f383f8b00000000362642f9f3afc4c3696fefebc4637d064c9c0098d8880000000042afc461782e79cb410f38057dd1c442793504f9")
        		syz_extract_tcp_res(&(0x7f0000000140), 0x4, 0x3)
        		r3 = syz_usb_connect(0xffff, 0x4d, &(0x7f0000000180)="f338a8163b89a7b30656ed66c391e973b0012853cfb48ca33165acb891ff9f03d9b791b0bf11719eb38a83dd12f1fc41fc6f47067d1faae2fad492d4df84b81e598c4b3a8c03360b02e6cf43cb", &(0x7f0000000200)="5fe31f9019e339918b8816c1f76e6c58ee4b2dc881a88aa3e16253a3ff98106bca2f4045df2b88e82c3c55830e854db3d484b1b0ec7159a23f916d9415f1c55240604fb1a1749442ec2980dab16faaec913e05ddc2c81bbdc9fa20975af953c5a270892f4dce5a795a2ac5")
        		syz_usb_disconnect(r3)
        		
        	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 <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 <time.h>
        		#include <unistd.h>
        		
        		static unsigned long long procid;
        		
        		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 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 loop(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);
        		}
        		
        		#ifndef SYS_accept
        		#define SYS_accept 30
        		#endif
        		#ifndef SYS_getgroups
        		#define SYS_getgroups 79
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lchown
        		#define SYS_lchown 275
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_paccept
        		#define SYS_paccept 456
        		#endif
        		#ifndef SYS_pread
        		#define SYS_pread 173
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		#ifndef SYS_vfork
        		#define SYS_vfork 66
        		#endif
        		
        		uint64_t r[4] = {0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_getsockopt, -1, 0xffff, 0x11, 0x20000040ul, 0xcul);
        				if (res != -1)
        		r[0] = *(uint32_t*)0x20000044;
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = -1;
        		*(uint32_t*)0x20000084 = -1;
        		*(uint32_t*)0x20000088 = -1;
        		*(uint32_t*)0x2000008c = -1;
        				res = syscall(SYS_getgroups, 4ul, 0x20000080ul);
        				if (res != -1)
        		r[1] = *(uint32_t*)0x20000088;
        				break;
        			case 2:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        				syscall(SYS_lchown, 0x20000000ul, r[0], r[1]);
        				break;
        			case 3:
        		*(uint32_t*)0x20000100 = 8;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200000c0ul, 0x20000100ul);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 4:
        		memcpy((void*)0x20000140, "\x08\x6f\x7e\xd0\xfc\x95\x05\x69\x40\x6a\x63\xe9\x99\x61\xc3\xf7\x09\x09\x19\xfa\x4a\x3b\xbf\x89\xff\x35\x34\xdf\x61\xa6\xe6\x88\x9d\x32\xec\x53\x92\xbf\x19\x1c\x5b\x68\x02\xb5\x41\xf0\x7a\xdf\x0b\xb5\x79\xda\x90\x65\xdc\x02\x27\x69\xde\xde\x4b\xba\xd1\xa5\x64\x53\xd7\xf2\xfb\x79\xe7\x88\xba\xd1\x85\x4b\xfb\xf2\x16\xcd\xf2\x04\x57\x1a\xa9\xb9\x27\x9c\x0d\xde\x0d\x94\x3d\xe6\xff\xa9\x13\x1b\x08\xc7\x39\x9d\x79\xe4\x8e\x0a\xc0\x2d\xa4\xa6\xe6\xf3\x8d\xe6\x73\x57\xbb\x41\xc0\x43\x88\x0c\x46\xfa\x1f\xef\x36\x2f\x5f\xac\x63\x16\x18\x6c\x1e\x79\xd8\x30\x36\xf4\x0b\xa9\xad\x13\xfa\xf5\xd2\x66\x6c\x83\xf5\x24\xfe\x1a\x48\xf0\x25\xfc\x55\x03\xd2\x10\x51\xdd\xce\xb8\x56\x49\xd8\x9c\x1a\x27\xbb\x91\x6f\xe6\x5e\x95\xd7\xff\x2b\x5e\x29\x53\x9a\x89\x1e\xaf\x6b\xd1\xa9\x8d\xa3\xd9\xc2\x7d\x3a\xac\x93\x8a\x8c\x54\x79\x26\x3b\xc7\x85\x59\x2e\xb1\xec\x47\x6d\x58\xa4\x34\x99\x86\x26\x76\xde\x2a\x04\xdc\xff\xa7\x85\x35\xee\xc6\xfd\x3b\x6b\xaa\x86\x33\xc7\xbe\x7c\x49\xb4\x8f\x6c\x4d", 244);
        				syscall(SYS_pread, r[2], 0x20000140ul, 0xf4ul, 9ul);
        				break;
        			case 5:
        				syscall(SYS_vfork);
        				break;
        			case 6:
        		*(uint64_t*)0x20000540 = 0x20000240;
        		*(uint32_t*)0x20000548 = 0xc;
        		*(uint64_t*)0x20000550 = 0x20000400;
        		*(uint64_t*)0x20000400 = 0x20000280;
        		*(uint64_t*)0x20000408 = 0x51;
        		*(uint64_t*)0x20000410 = 0x20000300;
        		*(uint64_t*)0x20000418 = 0x15;
        		*(uint64_t*)0x20000420 = 0x20000340;
        		*(uint64_t*)0x20000428 = 0x6a;
        		*(uint64_t*)0x20000430 = 0x200003c0;
        		*(uint64_t*)0x20000438 = 0x18;
        		*(uint64_t*)0x20000558 = 4;
        		*(uint64_t*)0x20000560 = 0x20000440;
        		*(uint64_t*)0x20000568 = 0xc4;
        		*(uint32_t*)0x20000570 = 0;
        				syscall(SYS_recvmsg, -1, 0x20000540ul, 1ul);
        				break;
        			case 7:
        		memcpy((void*)0x20000580, "./file0\000", 8);
        		*(uint64_t*)0x200005c0 = 1;
        		*(uint64_t*)0x200005c8 = 8;
        		*(uint64_t*)0x200005d0 = 8;
        		*(uint64_t*)0x200005d8 = 0xb138;
        				syscall(SYS_utimes, 0x20000580ul, 0x200005c0ul);
        				break;
        			case 8:
        				syscall(SYS_socket, 0x18ul, 5ul, 4);
        				break;
        			case 9:
        		*(uint32_t*)0x20000680 = 0;
        				syscall(SYS_paccept, -1, 0ul, 0x20000680ul, 0x20000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xa1\xe8\x30\x85\xdf\x3a\xb0\xe9\xd9\xcc\xa6\x23\x4e\xa2\x7c\x5b\xf3\x72\xec\x40\xed\x1d\x05\x39\xd0\xf2\x29\xfb\x91\x9e\xac\xbd\x15\xc4\xf2\x02\x51\x7a\xf5\xad\x8d\xd6\x71\xd6\xa6\x2a\x1d\x43\x54\x40\xbd\x7e\xe3\xa7\x17\x43\x8e\xbe\x25\x6e\x15\x63\x24\x59\xb3\xa0\x37\x5b\xee\xe0\x8e\x6c\x82\x62\x0a\xa5\x27\x49\x58\x29\xdd\x92\x3f\x5f\x95\xf8\x60\x1a\x31\x3a\xa7\x15\x26\xa4\x7e\x13\xea\x19\xab\x76\xf2\x43\x3a\xf4\x7d\x50\x2d\x16\xa6\x43\x89\xbd\x23\xba\xcc\xe1\x4f\x0c\x30\xed\x11\x00\x30\x0a\xc9\x9d\x9d\xc8\x35\xd6\xa4\x24\x64\xba\xe4\xcd\x08\x0d\x11\x0c\xe7\x9d\xde\x1e\xce\xfe\x47\x98\x4f\x92\x42\xc2\x60\x8c\xef\xb9\xee\x6d\xee\x05\x66\xfe\x85\xfa\x59\x74\x2e\x9c\x23\x7f\x37\x08\x57\x43\xa4\x38\x2d\xee\x82\xc7\xf0\x6c\xc2\x0a\x33\x97\xfe\x5b\xd7\xc2\x2f\x48\x47\xff\xf3\x85\x23\x97\x69\x43\x93\xcd\x25\x08\xb8\x6a\xf6\xb6\xea", 209);
        				break;
        			case 11:
        		memcpy((void*)0x20000100, "\x66\x0f\x38\x3f\x8b\x00\x00\x00\x00\x36\x26\x42\xf9\xf3\xaf\xc4\xc3\x69\x6f\xef\xeb\xc4\x63\x7d\x06\x4c\x9c\x00\x98\xd8\x88\x00\x00\x00\x00\x42\xaf\xc4\x61\x78\x2e\x79\xcb\x41\x0f\x38\x05\x7d\xd1\xc4\x42\x79\x35\x04\xf9", 55);
        				syz_execute_func(0x20000100);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000180, "\xf3\x38\xa8\x16\x3b\x89\xa7\xb3\x06\x56\xed\x66\xc3\x91\xe9\x73\xb0\x01\x28\x53\xcf\xb4\x8c\xa3\x31\x65\xac\xb8\x91\xff\x9f\x03\xd9\xb7\x91\xb0\xbf\x11\x71\x9e\xb3\x8a\x83\xdd\x12\xf1\xfc\x41\xfc\x6f\x47\x06\x7d\x1f\xaa\xe2\xfa\xd4\x92\xd4\xdf\x84\xb8\x1e\x59\x8c\x4b\x3a\x8c\x03\x36\x0b\x02\xe6\xcf\x43\xcb", 77);
        		memcpy((void*)0x20000200, "\x5f\xe3\x1f\x90\x19\xe3\x39\x91\x8b\x88\x16\xc1\xf7\x6e\x6c\x58\xee\x4b\x2d\xc8\x81\xa8\x8a\xa3\xe1\x62\x53\xa3\xff\x98\x10\x6b\xca\x2f\x40\x45\xdf\x2b\x88\xe8\x2c\x3c\x55\x83\x0e\x85\x4d\xb3\xd4\x84\xb1\xb0\xec\x71\x59\xa2\x3f\x91\x6d\x94\x15\xf1\xc5\x52\x40\x60\x4f\xb1\xa1\x74\x94\x42\xec\x29\x80\xda\xb1\x6f\xaa\xec\x91\x3e\x05\xdd\xc2\xc8\x1b\xbd\xc9\xfa\x20\x97\x5a\xf9\x53\xc5\xa2\x70\x89\x2f\x4d\xce\x5a\x79\x5a\x2a\xc5", 107);
        				res = syz_usb_connect(0xffff, 0x4d, 0x20000180, 0x20000200);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[3]);
        				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>:599:63: error: unknown type name 'usb_ctrlrequest'
        		<stdin>:604:55: error: unknown type name 'usb_ctrlrequest'
        		
        		compiler invocation: /syzkaller/netbsd/src/../tools/bin/x86_64--netbsd-g++ [-o /tmp/syz-executor886523406 -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/amd64/1 (0.26s)
        	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:false}
        		program:
        		getsockopt$SO_PEERCRED(0xffffffffffffffff, 0xffff, 0x11, &(0x7f0000000040)={0x0, <r0=>0x0}, 0xc)
        		getgroups(0x4, &(0x7f0000000080)=[0xffffffffffffffff, 0xffffffffffffffff, <r1=>0xffffffffffffffff, 0xffffffffffffffff])
        		lchown(&(0x7f0000000000)='./file0\x00', r0, r1)
        		r2 = accept(0xffffffffffffff9c, &(0x7f00000000c0)=@un=@abs, &(0x7f0000000100)=0x8)
        		pread(r2, &(0x7f0000000140)="086f7ed0fc950569406a63e99961c3f7090919fa4a3bbf89ff3534df61a6e6889d32ec5392bf191c5b6802b541f07adf0bb579da9065dc022769dede4bbad1a56453d7f2fb79e788bad1854bfbf216cdf204571aa9b9279c0dde0d943de6ffa9131b08c7399d79e48e0ac02da4a6e6f38de67357bb41c043880c46fa1fef362f5fac6316186c1e79d83036f40ba9ad13faf5d2666c83f524fe1a48f025fc5503d21051ddceb85649d89c1a27bb916fe65e95d7ff2b5e29539a891eaf6bd1a98da3d9c27d3aac938a8c5479263bc785592eb1ec476d58a43499862676de2a04dcffa78535eec6fd3b6baa8633c7be7c49b48f6c4d", 0xf4, 0x9)
        		vfork()
        		recvmsg(0xffffffffffffffff, &(0x7f0000000540)={&(0x7f0000000240)=@in6, 0xc, &(0x7f0000000400)=[{&(0x7f0000000280)=""/81, 0x51}, {&(0x7f0000000300)=""/21, 0x15}, {&(0x7f0000000340)=""/106, 0x6a}, {&(0x7f00000003c0)=""/24, 0x18}], 0x4, &(0x7f0000000440)=""/196, 0xc4}, 0x1)
        		utimes(&(0x7f0000000580)='./file0\x00', &(0x7f00000005c0)={{0x1, 0x8}, {0x8, 0xb138}})
        		socket$inet6(0x18, 0x5, 0x4)
        		paccept(0xffffffffffffffff, 0x0, &(0x7f0000000680), 0x20000000)
        		syz_emit_ethernet(0xd1, &(0x7f0000000000)="a1e83085df3ab0e9d9cca6234ea27c5bf372ec40ed1d0539d0f229fb919eacbd15c4f202517af5ad8dd671d6a62a1d435440bd7ee3a717438ebe256e15632459b3a0375beee08e6c82620aa527495829dd923f5f95f8601a313aa71526a47e13ea19ab76f2433af47d502d16a64389bd23bacce14f0c30ed1100300ac99d9dc835d6a42464bae4cd080d110ce79dde1ecefe47984f9242c2608cefb9ee6dee0566fe85fa59742e9c237f37085743a4382dee82c7f06cc20a3397fe5bd7c22f4847fff3852397694393cd2508b86af6b6ea")
        		syz_execute_func(&(0x7f0000000100)="660f383f8b00000000362642f9f3afc4c3696fefebc4637d064c9c0098d8880000000042afc461782e79cb410f38057dd1c442793504f9")
        		syz_extract_tcp_res(&(0x7f0000000140), 0x4, 0x3)
        		r3 = syz_usb_connect(0xffff, 0x4d, &(0x7f0000000180)="f338a8163b89a7b30656ed66c391e973b0012853cfb48ca33165acb891ff9f03d9b791b0bf11719eb38a83dd12f1fc41fc6f47067d1faae2fad492d4df84b81e598c4b3a8c03360b02e6cf43cb", &(0x7f0000000200)="5fe31f9019e339918b8816c1f76e6c58ee4b2dc881a88aa3e16253a3ff98106bca2f4045df2b88e82c3c55830e854db3d484b1b0ec7159a23f916d9415f1c55240604fb1a1749442ec2980dab16faaec913e05ddc2c81bbdc9fa20975af953c5a270892f4dce5a795a2ac5")
        		syz_usb_disconnect(r3)
        		
        	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_accept
        		#define SYS_accept 30
        		#endif
        		#ifndef SYS_getgroups
        		#define SYS_getgroups 79
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lchown
        		#define SYS_lchown 275
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_paccept
        		#define SYS_paccept 456
        		#endif
        		#ifndef SYS_pread
        		#define SYS_pread 173
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		#ifndef SYS_vfork
        		#define SYS_vfork 66
        		#endif
        		
        		uint64_t r[4] = {0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_getsockopt, -1, 0xffff, 0x11, 0x20000040ul, 0xcul);
        				if (res != -1)
        		r[0] = *(uint32_t*)0x20000044;
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = -1;
        		*(uint32_t*)0x20000084 = -1;
        		*(uint32_t*)0x20000088 = -1;
        		*(uint32_t*)0x2000008c = -1;
        				res = syscall(SYS_getgroups, 4ul, 0x20000080ul);
        				if (res != -1)
        		r[1] = *(uint32_t*)0x20000088;
        				break;
        			case 2:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        				syscall(SYS_lchown, 0x20000000ul, r[0], r[1]);
        				break;
        			case 3:
        		*(uint32_t*)0x20000100 = 8;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200000c0ul, 0x20000100ul);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 4:
        		memcpy((void*)0x20000140, "\x08\x6f\x7e\xd0\xfc\x95\x05\x69\x40\x6a\x63\xe9\x99\x61\xc3\xf7\x09\x09\x19\xfa\x4a\x3b\xbf\x89\xff\x35\x34\xdf\x61\xa6\xe6\x88\x9d\x32\xec\x53\x92\xbf\x19\x1c\x5b\x68\x02\xb5\x41\xf0\x7a\xdf\x0b\xb5\x79\xda\x90\x65\xdc\x02\x27\x69\xde\xde\x4b\xba\xd1\xa5\x64\x53\xd7\xf2\xfb\x79\xe7\x88\xba\xd1\x85\x4b\xfb\xf2\x16\xcd\xf2\x04\x57\x1a\xa9\xb9\x27\x9c\x0d\xde\x0d\x94\x3d\xe6\xff\xa9\x13\x1b\x08\xc7\x39\x9d\x79\xe4\x8e\x0a\xc0\x2d\xa4\xa6\xe6\xf3\x8d\xe6\x73\x57\xbb\x41\xc0\x43\x88\x0c\x46\xfa\x1f\xef\x36\x2f\x5f\xac\x63\x16\x18\x6c\x1e\x79\xd8\x30\x36\xf4\x0b\xa9\xad\x13\xfa\xf5\xd2\x66\x6c\x83\xf5\x24\xfe\x1a\x48\xf0\x25\xfc\x55\x03\xd2\x10\x51\xdd\xce\xb8\x56\x49\xd8\x9c\x1a\x27\xbb\x91\x6f\xe6\x5e\x95\xd7\xff\x2b\x5e\x29\x53\x9a\x89\x1e\xaf\x6b\xd1\xa9\x8d\xa3\xd9\xc2\x7d\x3a\xac\x93\x8a\x8c\x54\x79\x26\x3b\xc7\x85\x59\x2e\xb1\xec\x47\x6d\x58\xa4\x34\x99\x86\x26\x76\xde\x2a\x04\xdc\xff\xa7\x85\x35\xee\xc6\xfd\x3b\x6b\xaa\x86\x33\xc7\xbe\x7c\x49\xb4\x8f\x6c\x4d", 244);
        				syscall(SYS_pread, r[2], 0x20000140ul, 0xf4ul, 9ul);
        				break;
        			case 5:
        				syscall(SYS_vfork);
        				break;
        			case 6:
        		*(uint64_t*)0x20000540 = 0x20000240;
        		*(uint32_t*)0x20000548 = 0xc;
        		*(uint64_t*)0x20000550 = 0x20000400;
        		*(uint64_t*)0x20000400 = 0x20000280;
        		*(uint64_t*)0x20000408 = 0x51;
        		*(uint64_t*)0x20000410 = 0x20000300;
        		*(uint64_t*)0x20000418 = 0x15;
        		*(uint64_t*)0x20000420 = 0x20000340;
        		*(uint64_t*)0x20000428 = 0x6a;
        		*(uint64_t*)0x20000430 = 0x200003c0;
        		*(uint64_t*)0x20000438 = 0x18;
        		*(uint64_t*)0x20000558 = 4;
        		*(uint64_t*)0x20000560 = 0x20000440;
        		*(uint64_t*)0x20000568 = 0xc4;
        		*(uint32_t*)0x20000570 = 0;
        				syscall(SYS_recvmsg, -1, 0x20000540ul, 1ul);
        				break;
        			case 7:
        		memcpy((void*)0x20000580, "./file0\000", 8);
        		*(uint64_t*)0x200005c0 = 1;
        		*(uint64_t*)0x200005c8 = 8;
        		*(uint64_t*)0x200005d0 = 8;
        		*(uint64_t*)0x200005d8 = 0xb138;
        				syscall(SYS_utimes, 0x20000580ul, 0x200005c0ul);
        				break;
        			case 8:
        				syscall(SYS_socket, 0x18ul, 5ul, 4);
        				break;
        			case 9:
        		*(uint32_t*)0x20000680 = 0;
        				syscall(SYS_paccept, -1, 0ul, 0x20000680ul, 0x20000000ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xa1\xe8\x30\x85\xdf\x3a\xb0\xe9\xd9\xcc\xa6\x23\x4e\xa2\x7c\x5b\xf3\x72\xec\x40\xed\x1d\x05\x39\xd0\xf2\x29\xfb\x91\x9e\xac\xbd\x15\xc4\xf2\x02\x51\x7a\xf5\xad\x8d\xd6\x71\xd6\xa6\x2a\x1d\x43\x54\x40\xbd\x7e\xe3\xa7\x17\x43\x8e\xbe\x25\x6e\x15\x63\x24\x59\xb3\xa0\x37\x5b\xee\xe0\x8e\x6c\x82\x62\x0a\xa5\x27\x49\x58\x29\xdd\x92\x3f\x5f\x95\xf8\x60\x1a\x31\x3a\xa7\x15\x26\xa4\x7e\x13\xea\x19\xab\x76\xf2\x43\x3a\xf4\x7d\x50\x2d\x16\xa6\x43\x89\xbd\x23\xba\xcc\xe1\x4f\x0c\x30\xed\x11\x00\x30\x0a\xc9\x9d\x9d\xc8\x35\xd6\xa4\x24\x64\xba\xe4\xcd\x08\x0d\x11\x0c\xe7\x9d\xde\x1e\xce\xfe\x47\x98\x4f\x92\x42\xc2\x60\x8c\xef\xb9\xee\x6d\xee\x05\x66\xfe\x85\xfa\x59\x74\x2e\x9c\x23\x7f\x37\x08\x57\x43\xa4\x38\x2d\xee\x82\xc7\xf0\x6c\xc2\x0a\x33\x97\xfe\x5b\xd7\xc2\x2f\x48\x47\xff\xf3\x85\x23\x97\x69\x43\x93\xcd\x25\x08\xb8\x6a\xf6\xb6\xea", 209);
        				break;
        			case 11:
        		memcpy((void*)0x20000100, "\x66\x0f\x38\x3f\x8b\x00\x00\x00\x00\x36\x26\x42\xf9\xf3\xaf\xc4\xc3\x69\x6f\xef\xeb\xc4\x63\x7d\x06\x4c\x9c\x00\x98\xd8\x88\x00\x00\x00\x00\x42\xaf\xc4\x61\x78\x2e\x79\xcb\x41\x0f\x38\x05\x7d\xd1\xc4\x42\x79\x35\x04\xf9", 55);
        				syz_execute_func(0x20000100);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000180, "\xf3\x38\xa8\x16\x3b\x89\xa7\xb3\x06\x56\xed\x66\xc3\x91\xe9\x73\xb0\x01\x28\x53\xcf\xb4\x8c\xa3\x31\x65\xac\xb8\x91\xff\x9f\x03\xd9\xb7\x91\xb0\xbf\x11\x71\x9e\xb3\x8a\x83\xdd\x12\xf1\xfc\x41\xfc\x6f\x47\x06\x7d\x1f\xaa\xe2\xfa\xd4\x92\xd4\xdf\x84\xb8\x1e\x59\x8c\x4b\x3a\x8c\x03\x36\x0b\x02\xe6\xcf\x43\xcb", 77);
        		memcpy((void*)0x20000200, "\x5f\xe3\x1f\x90\x19\xe3\x39\x91\x8b\x88\x16\xc1\xf7\x6e\x6c\x58\xee\x4b\x2d\xc8\x81\xa8\x8a\xa3\xe1\x62\x53\xa3\xff\x98\x10\x6b\xca\x2f\x40\x45\xdf\x2b\x88\xe8\x2c\x3c\x55\x83\x0e\x85\x4d\xb3\xd4\x84\xb1\xb0\xec\x71\x59\xa2\x3f\x91\x6d\x94\x15\xf1\xc5\x52\x40\x60\x4f\xb1\xa1\x74\x94\x42\xec\x29\x80\xda\xb1\x6f\xaa\xec\x91\x3e\x05\xdd\xc2\xc8\x1b\xbd\xc9\xfa\x20\x97\x5a\xf9\x53\xc5\xa2\x70\x89\x2f\x4d\xce\x5a\x79\x5a\x2a\xc5", 107);
        				res = syz_usb_connect(0xffff, 0x4d, 0x20000180, 0x20000200);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 14:
        				syz_usb_disconnect(r[3]);
        				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-executor292069547 -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 (0.25s)
        	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:
        		getsockopt$SO_PEERCRED(0xffffffffffffffff, 0xffff, 0x11, &(0x7f0000000040)={0x0, <r0=>0x0}, 0xc)
        		getgroups(0x4, &(0x7f0000000080)=[0xffffffffffffffff, 0xffffffffffffffff, <r1=>0xffffffffffffffff, 0xffffffffffffffff])
        		lchown(&(0x7f0000000000)='./file0\x00', r0, r1)
        		r2 = accept(0xffffffffffffff9c, &(0x7f00000000c0)=@un=@abs, &(0x7f0000000100)=0x8)
        		pread(r2, &(0x7f0000000140)="086f7ed0fc950569406a63e99961c3f7090919fa4a3bbf89ff3534df61a6e6889d32ec5392bf191c5b6802b541f07adf0bb579da9065dc022769dede4bbad1a56453d7f2fb79e788bad1854bfbf216cdf204571aa9b9279c0dde0d943de6ffa9131b08c7399d79e48e0ac02da4a6e6f38de67357bb41c043880c46fa1fef362f5fac6316186c1e79d83036f40ba9ad13faf5d2666c83f524fe1a48f025fc5503d21051ddceb85649d89c1a27bb916fe65e95d7ff2b5e29539a891eaf6bd1a98da3d9c27d3aac938a8c5479263bc785592eb1ec476d58a43499862676de2a04dcffa78535eec6fd3b6baa8633c7be7c49b48f6c4d", 0xf4, 0x9)
        		vfork()
        		recvmsg(0xffffffffffffffff, &(0x7f0000000540)={&(0x7f0000000240)=@in6, 0xc, &(0x7f0000000400)=[{&(0x7f0000000280)=""/81, 0x51}, {&(0x7f0000000300)=""/21, 0x15}, {&(0x7f0000000340)=""/106, 0x6a}, {&(0x7f00000003c0)=""/24, 0x18}], 0x4, &(0x7f0000000440)=""/196, 0xc4}, 0x1)
        		utimes(&(0x7f0000000580)='./file0\x00', &(0x7f00000005c0)={{0x1, 0x8}, {0x8, 0xb138}})
        		socket$inet6(0x18, 0x5, 0x4)
        		paccept(0xffffffffffffffff, 0x0, &(0x7f0000000680), 0x20000000)
        		syz_emit_ethernet(0xd1, &(0x7f0000000000)="a1e83085df3ab0e9d9cca6234ea27c5bf372ec40ed1d0539d0f229fb919eacbd15c4f202517af5ad8dd671d6a62a1d435440bd7ee3a717438ebe256e15632459b3a0375beee08e6c82620aa527495829dd923f5f95f8601a313aa71526a47e13ea19ab76f2433af47d502d16a64389bd23bacce14f0c30ed1100300ac99d9dc835d6a42464bae4cd080d110ce79dde1ecefe47984f9242c2608cefb9ee6dee0566fe85fa59742e9c237f37085743a4382dee82c7f06cc20a3397fe5bd7c22f4847fff3852397694393cd2508b86af6b6ea")
        		syz_execute_func(&(0x7f0000000100)="660f383f8b00000000362642f9f3afc4c3696fefebc4637d064c9c0098d8880000000042afc461782e79cb410f38057dd1c442793504f9")
        		syz_extract_tcp_res(&(0x7f0000000140), 0x4, 0x3)
        		r3 = syz_usb_connect(0xffff, 0x4d, &(0x7f0000000180)="f338a8163b89a7b30656ed66c391e973b0012853cfb48ca33165acb891ff9f03d9b791b0bf11719eb38a83dd12f1fc41fc6f47067d1faae2fad492d4df84b81e598c4b3a8c03360b02e6cf43cb", &(0x7f0000000200)="5fe31f9019e339918b8816c1f76e6c58ee4b2dc881a88aa3e16253a3ff98106bca2f4045df2b88e82c3c55830e854db3d484b1b0ec7159a23f916d9415f1c55240604fb1a1749442ec2980dab16faaec913e05ddc2c81bbdc9fa20975af953c5a270892f4dce5a795a2ac5")
        		syz_usb_disconnect(r3)
        		
        	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_accept
        		#define SYS_accept 30
        		#endif
        		#ifndef SYS_getgroups
        		#define SYS_getgroups 79
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lchown
        		#define SYS_lchown 275
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_paccept
        		#define SYS_paccept 456
        		#endif
        		#ifndef SYS_pread
        		#define SYS_pread 173
        		#endif
        		#ifndef SYS_recvmsg
        		#define SYS_recvmsg 27
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		#ifndef SYS_vfork
        		#define SYS_vfork 66
        		#endif
        		
        		uint64_t r[4] = {0x0, 0x0, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        				res = syscall(SYS_getsockopt, -1, 0xffff, 0x11, 0x20000040ul, 0xcul);
        				fprintf(stderr, "### call=0 errno=%u\n", res == -1 ? errno : 0);
        				if (res != -1)
        		r[0] = *(uint32_t*)0x20000044;
        				break;
        			case 1:
        		*(uint32_t*)0x20000080 = -1;
        		*(uint32_t*)0x20000084 = -1;
        		*(uint32_t*)0x20000088 = -1;
        		*(uint32_t*)0x2000008c = -1;
        				res = syscall(SYS_getgroups, 4ul, 0x20000080ul);
        				fprintf(stderr, "### call=1 errno=%u\n", res == -1 ? errno : 0);
        				if (res != -1)
        		r[1] = *(uint32_t*)0x20000088;
        				break;
        			case 2:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        				res = syscall(SYS_lchown, 0x20000000ul, r[0], r[1]);
        				fprintf(stderr, "### call=2 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 3:
        		*(uint32_t*)0x20000100 = 8;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200000c0ul, 0x20000100ul);
        				fprintf(stderr, "### call=3 errno=%u\n", res == -1 ? errno : 0);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 4:
        		memcpy((void*)0x20000140, "\x08\x6f\x7e\xd0\xfc\x95\x05\x69\x40\x6a\x63\xe9\x99\x61\xc3\xf7\x09\x09\x19\xfa\x4a\x3b\xbf\x89\xff\x35\x34\xdf\x61\xa6\xe6\x88\x9d\x32\xec\x53\x92\xbf\x19\x1c\x5b\x68\x02\xb5\x41\xf0\x7a\xdf\x0b\xb5\x79\xda\x90\x65\xdc\x02\x27\x69\xde\xde\x4b\xba\xd1\xa5\x64\x53\xd7\xf2\xfb\x79\xe7\x88\xba\xd1\x85\x4b\xfb\xf2\x16\xcd\xf2\x04\x57\x1a\xa9\xb9\x27\x9c\x0d\xde\x0d\x94\x3d\xe6\xff\xa9\x13\x1b\x08\xc7\x39\x9d\x79\xe4\x8e\x0a\xc0\x2d\xa4\xa6\xe6\xf3\x8d\xe6\x73\x57\xbb\x41\xc0\x43\x88\x0c\x46\xfa\x1f\xef\x36\x2f\x5f\xac\x63\x16\x18\x6c\x1e\x79\xd8\x30\x36\xf4\x0b\xa9\xad\x13\xfa\xf5\xd2\x66\x6c\x83\xf5\x24\xfe\x1a\x48\xf0\x25\xfc\x55\x03\xd2\x10\x51\xdd\xce\xb8\x56\x49\xd8\x9c\x1a\x27\xbb\x91\x6f\xe6\x5e\x95\xd7\xff\x2b\x5e\x29\x53\x9a\x89\x1e\xaf\x6b\xd1\xa9\x8d\xa3\xd9\xc2\x7d\x3a\xac\x93\x8a\x8c\x54\x79\x26\x3b\xc7\x85\x59\x2e\xb1\xec\x47\x6d\x58\xa4\x34\x99\x86\x26\x76\xde\x2a\x04\xdc\xff\xa7\x85\x35\xee\xc6\xfd\x3b\x6b\xaa\x86\x33\xc7\xbe\x7c\x49\xb4\x8f\x6c\x4d", 244);
        				res = syscall(SYS_pread, r[2], 0x20000140ul, 0xf4ul, 9ul);
        				fprintf(stderr, "### call=4 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 5:
        				res = syscall(SYS_vfork);
        				fprintf(stderr, "### call=5 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 6:
        		*(uint64_t*)0x20000540 = 0x20000240;
        		*(uint32_t*)0x20000548 = 0xc;
        		*(uint64_t*)0x20000550 = 0x20000400;
        		*(uint64_t*)0x20000400 = 0x20000280;
        		*(uint64_t*)0x20000408 = 0x51;
        		*(uint64_t*)0x20000410 = 0x20000300;
        		*(uint64_t*)0x20000418 = 0x15;
        		*(uint64_t*)0x20000420 = 0x20000340;
        		*(uint64_t*)0x20000428 = 0x6a;
        		*(uint64_t*)0x20000430 = 0x200003c0;
        		*(uint64_t*)0x20000438 = 0x18;
        		*(uint64_t*)0x20000558 = 4;
        		*(uint64_t*)0x20000560 = 0x20000440;
        		*(uint64_t*)0x20000568 = 0xc4;
        		*(uint32_t*)0x20000570 = 0;
        				res = syscall(SYS_recvmsg, -1, 0x20000540ul, 1ul);
        				fprintf(stderr, "### call=6 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 7:
        		memcpy((void*)0x20000580, "./file0\000", 8);
        		*(uint64_t*)0x200005c0 = 1;
        		*(uint64_t*)0x200005c8 = 8;
        		*(uint64_t*)0x200005d0 = 8;
        		*(uint64_t*)0x200005d8 = 0xb138;
        				res = syscall(SYS_utimes, 0x20000580ul, 0x200005c0ul);
        				fprintf(stderr, "### call=7 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 8:
        				res = syscall(SYS_socket, 0x18ul, 5ul, 4);
        				fprintf(stderr, "### call=8 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 9:
        		*(uint32_t*)0x20000680 = 0;
        				res = syscall(SYS_paccept, -1, 0ul, 0x20000680ul, 0x20000000ul);
        				fprintf(stderr, "### call=9 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xa1\xe8\x30\x85\xdf\x3a\xb0\xe9\xd9\xcc\xa6\x23\x4e\xa2\x7c\x5b\xf3\x72\xec\x40\xed\x1d\x05\x39\xd0\xf2\x29\xfb\x91\x9e\xac\xbd\x15\xc4\xf2\x02\x51\x7a\xf5\xad\x8d\xd6\x71\xd6\xa6\x2a\x1d\x43\x54\x40\xbd\x7e\xe3\xa7\x17\x43\x8e\xbe\x25\x6e\x15\x63\x24\x59\xb3\xa0\x37\x5b\xee\xe0\x8e\x6c\x82\x62\x0a\xa5\x27\x49\x58\x29\xdd\x92\x3f\x5f\x95\xf8\x60\x1a\x31\x3a\xa7\x15\x26\xa4\x7e\x13\xea\x19\xab\x76\xf2\x43\x3a\xf4\x7d\x50\x2d\x16\xa6\x43\x89\xbd\x23\xba\xcc\xe1\x4f\x0c\x30\xed\x11\x00\x30\x0a\xc9\x9d\x9d\xc8\x35\xd6\xa4\x24\x64\xba\xe4\xcd\x08\x0d\x11\x0c\xe7\x9d\xde\x1e\xce\xfe\x47\x98\x4f\x92\x42\xc2\x60\x8c\xef\xb9\xee\x6d\xee\x05\x66\xfe\x85\xfa\x59\x74\x2e\x9c\x23\x7f\x37\x08\x57\x43\xa4\x38\x2d\xee\x82\xc7\xf0\x6c\xc2\x0a\x33\x97\xfe\x5b\xd7\xc2\x2f\x48\x47\xff\xf3\x85\x23\x97\x69\x43\x93\xcd\x25\x08\xb8\x6a\xf6\xb6\xea", 209);
        				(void)res;
        				break;
        			case 11:
        		memcpy((void*)0x20000100, "\x66\x0f\x38\x3f\x8b\x00\x00\x00\x00\x36\x26\x42\xf9\xf3\xaf\xc4\xc3\x69\x6f\xef\xeb\xc4\x63\x7d\x06\x4c\x9c\x00\x98\xd8\x88\x00\x00\x00\x00\x42\xaf\xc4\x61\x78\x2e\x79\xcb\x41\x0f\x38\x05\x7d\xd1\xc4\x42\x79\x35\x04\xf9", 55);
        				res = syz_execute_func(0x20000100);
        				fprintf(stderr, "### call=11 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 12:
        				(void)res;
        				break;
        			case 13:
        		memcpy((void*)0x20000180, "\xf3\x38\xa8\x16\x3b\x89\xa7\xb3\x06\x56\xed\x66\xc3\x91\xe9\x73\xb0\x01\x28\x53\xcf\xb4\x8c\xa3\x31\x65\xac\xb8\x91\xff\x9f\x03\xd9\xb7\x91\xb0\xbf\x11\x71\x9e\xb3\x8a\x83\xdd\x12\xf1\xfc\x41\xfc\x6f\x47\x06\x7d\x1f\xaa\xe2\xfa\xd4\x92\xd4\xdf\x84\xb8\x1e\x59\x8c\x4b\x3a\x8c\x03\x36\x0b\x02\xe6\xcf\x43\xcb", 77);
        		memcpy((void*)0x20000200, "\x5f\xe3\x1f\x90\x19\xe3\x39\x91\x8b\x88\x16\xc1\xf7\x6e\x6c\x58\xee\x4b\x2d\xc8\x81\xa8\x8a\xa3\xe1\x62\x53\xa3\xff\x98\x10\x6b\xca\x2f\x40\x45\xdf\x2b\x88\xe8\x2c\x3c\x55\x83\x0e\x85\x4d\xb3\xd4\x84\xb1\xb0\xec\x71\x59\xa2\x3f\x91\x6d\x94\x15\xf1\xc5\x52\x40\x60\x4f\xb1\xa1\x74\x94\x42\xec\x29\x80\xda\xb1\x6f\xaa\xec\x91\x3e\x05\xdd\xc2\xc8\x1b\xbd\xc9\xfa\x20\x97\x5a\xf9\x53\xc5\xa2\x70\x89\x2f\x4d\xce\x5a\x79\x5a\x2a\xc5", 107);
        				res = syz_usb_connect(0xffff, 0x4d, 0x20000180, 0x20000200);
        				fprintf(stderr, "### call=13 errno=%u\n", res == -1 ? errno : 0);
        				if (res != -1)
        						r[3] = res;
        				break;
        			case 14:
        				res = syz_usb_disconnect(r[3]);
        				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-executor292520469 -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:121: 
        --- FAIL: TestGenerate/netbsd/amd64/12 (0.22s)
        	csource_test.go:121: 
        --- FAIL: TestGenerate/netbsd/amd64/14 (0.22s)
        	csource_test.go:121: 
        --- FAIL: TestGenerate/netbsd/amd64/9 (0.24s)
        	csource_test.go:121: 
        --- FAIL: TestGenerate/netbsd/amd64/11 (0.24s)
        	csource_test.go:121: 
FAIL
FAIL	github.com/google/syzkaller/pkg/csource	4.487s
ok  	github.com/google/syzkaller/pkg/db	1.906s
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	8.832s
?   	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	4.494s
ok  	github.com/google/syzkaller/pkg/ipc	7.631s
?   	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	2.521s
ok  	github.com/google/syzkaller/pkg/osutil	(cached)
ok  	github.com/google/syzkaller/pkg/report	6.550s
ok  	github.com/google/syzkaller/pkg/repro	5.868s
?   	github.com/google/syzkaller/pkg/rpctype	[no test files]
ok  	github.com/google/syzkaller/pkg/runtest	13.751s
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	25.773s
ok  	github.com/google/syzkaller/prog/test	1.729s
?   	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	0.261s
?   	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	0.133s
?   	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	4.512s
ok  	github.com/google/syzkaller/syz-fuzzer	1.509s
ok  	github.com/google/syzkaller/syz-hub	0.858s
ok  	github.com/google/syzkaller/syz-hub/state	0.185s
?   	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	1.288s
ok  	github.com/google/syzkaller/tools/syz-trace2syz/proggen	1.675s
?   	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	12.057s
?   	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]