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	10.506s
ok  	github.com/google/syzkaller/pkg/build	3.392s
?   	github.com/google/syzkaller/pkg/cmdprof	[no test files]
ok  	github.com/google/syzkaller/pkg/compiler	(cached)
ok  	github.com/google/syzkaller/pkg/config	(cached)
?   	github.com/google/syzkaller/pkg/cover	[no test files]
--- FAIL: TestGenerate (1.37s)
    --- FAIL: TestGenerate/netbsd/amd64 (0.04s)
    	csource_test.go:67: seed=1590168635283393918
        --- FAIL: TestGenerate/netbsd/amd64/4 (0.38s)
        	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:
        		utimes(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x10001, 0x5fd69e51}, {0xfffffffffffff201, 0x3969}})
        		lstat(0xffffffffffffffff, &(0x7f0000000080))
        		execve(&(0x7f0000000140)='./file0\x00', 0x0, &(0x7f0000000180))
        		r0 = accept$inet(0xffffffffffffff9c, &(0x7f00000001c0), &(0x7f0000000200)=0xc)
        		getsockopt$sock_timeval(r0, 0xffff, 0x100c, &(0x7f0000000240), &(0x7f0000000280)=0x10)
        		r1 = accept$inet(0xffffffffffffff9c, &(0x7f00000002c0), &(0x7f0000000300)=0xc)
        		getpeername(r1, &(0x7f0000000340)=@in, &(0x7f0000000380)=0xc)
        		r2 = socket$inet(0x2, 0x2, 0xfc)
        		setsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f00000003c0)="1ef56ab09639c2b6d1d9f4c2673c326203c1a42261e9f1a12cb03084036dea5115c70f967ec71facea566d169319f9b65fd8360562f479c2950f", 0x3a)
        		execve(&(0x7f0000000400)='./file0\x00', &(0x7f0000000580)=[&(0x7f0000000440)='[!\'{\x00', &(0x7f0000000480)='&\x00', &(0x7f00000004c0)='\x00', &(0x7f0000000500)='\'$^({!*-\x00', &(0x7f0000000540)='\x00'], &(0x7f0000000740)=[&(0x7f00000005c0)='^\xc4)\x00', &(0x7f0000000600)='\x00', &(0x7f0000000640)='\'-#$.^!)\x00', &(0x7f0000000680)='\x00', &(0x7f00000006c0)='(\x00', &(0x7f0000000700)='\x00'])
        		syz_emit_ethernet(0x53, &(0x7f0000000000)="d23918dbd2d1c37faabeb91a927235d4cc7f49d6ae3be5ce00da87bb93a9d5ea5424dcf23c4bb143ab0434109e924384d4f0b7c12acf3ef50ce96f95eb34d1c805b3a9b6a86ac40cf703d81bed0079b28b506a")
        		syz_execute_func(&(0x7f0000000080)="c4c2e9f7fe8f49f812c2c4a1515c1d00000000f3430faed2c4219dd5c58f6800ecda82410f0189070000213664440f381c53b28f29b899b200000021c4a3ed0a7a0009")
        		syz_extract_tcp_res(&(0x7f0000000100), 0x4, 0xffff)
        		r3 = syz_usb_connect(0x50f, 0xe3, &(0x7f0000000140)="ebdec13ce69b02c56926eab47c6808aa6b569153ee220563f41c82c9ce3147e6179d474c09990125163e4b2d6ad2b3b7700777092a938aeafc009738583cd2806f7c10db7015bd2ec78f6e39e6927b062e73bb583291dfe21260e09c8e5fada51107fdf72acebff7f0d3cc555bfbeba8550bf6e463228a2cf8b259b2c21e3a962f8bc033eff9862ca8430f7a675357cafc2d77095eb2fd11c1881f698cbe022db984c8fa243940adc5f1303d6b2e3282341e30ba61f4a2142ab29749df98f4e4a6c3bb351466d733528e4f3ec44e01bb354cdc0238cf8b4a5d21a78f9726ec59562fb5", &(0x7f0000000240)="938ef0bca6cbeab42ded663d2176d01a0719404b60e83d8453f01f69368690768f05504c40e60a72f4a542ef60a21d7660c4349984fb299fdf95c005bea67f46de572e2d8026fd51a191c8c8bcdf90c308f72440d7b832234ccc0979719cf58072f3129ab79eb5179176bd1f886479a1b75db28da14b5ac111437e5939ccca7f25ee5ef658e9d942260d73f95acf3042aa91c9b452761314167e1b8bdfc363adf93868dd80598d4ad9ce4005761557ccebc3775a86ba7f9c63f65d40b24bfa167327e0007e2c53fc54ed628b4ccdadcdf0e8188afd27404349")
        		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_execve
        		#define SYS_execve 59
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lstat
        		#define SYS_lstat 441
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_setsockopt
        		#define SYS_setsockopt 105
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		
        		uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        		*(uint64_t*)0x20000040 = 0x10001;
        		*(uint64_t*)0x20000048 = 0x5fd69e51;
        		*(uint64_t*)0x20000050 = 0xfffffffffffff201;
        		*(uint64_t*)0x20000058 = 0x3969;
        				syscall(SYS_utimes, 0x20000000ul, 0x20000040ul);
        				break;
        			case 1:
        				syscall(SYS_lstat, -1ul, 0x20000080ul);
        				break;
        			case 2:
        		memcpy((void*)0x20000140, "./file0\000", 8);
        				syscall(SYS_execve, 0x20000140ul, 0ul, 0x20000180ul);
        				break;
        			case 3:
        		*(uint32_t*)0x20000200 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200001c0ul, 0x20000200ul);
        				if (res != -1)
        						r[0] = res;
        				break;
        			case 4:
        		*(uint32_t*)0x20000280 = 0x10;
        				syscall(SYS_getsockopt, r[0], 0xffff, 0x100c, 0x20000240ul, 0x20000280ul);
        				break;
        			case 5:
        		*(uint32_t*)0x20000300 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200002c0ul, 0x20000300ul);
        				if (res != -1)
        						r[1] = res;
        				break;
        			case 6:
        		*(uint32_t*)0x20000380 = 0xc;
        				syscall(SYS_getpeername, r[1], 0x20000340ul, 0x20000380ul);
        				break;
        			case 7:
        				res = syscall(SYS_socket, 2ul, 2ul, 0xfc);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 8:
        		memcpy((void*)0x200003c0, "\x1e\xf5\x6a\xb0\x96\x39\xc2\xb6\xd1\xd9\xf4\xc2\x67\x3c\x32\x62\x03\xc1\xa4\x22\x61\xe9\xf1\xa1\x2c\xb0\x30\x84\x03\x6d\xea\x51\x15\xc7\x0f\x96\x7e\xc7\x1f\xac\xea\x56\x6d\x16\x93\x19\xf9\xb6\x5f\xd8\x36\x05\x62\xf4\x79\xc2\x95\x0f", 58);
        				syscall(SYS_setsockopt, r[2], 0, 1, 0x200003c0ul, 0x3aul);
        				break;
        			case 9:
        		memcpy((void*)0x20000400, "./file0\000", 8);
        		*(uint64_t*)0x20000580 = 0x20000440;
        		memcpy((void*)0x20000440, "[!\'{\000", 5);
        		*(uint64_t*)0x20000588 = 0x20000480;
        		memcpy((void*)0x20000480, "&\000", 2);
        		*(uint64_t*)0x20000590 = 0x200004c0;
        		memcpy((void*)0x200004c0, "\000", 1);
        		*(uint64_t*)0x20000598 = 0x20000500;
        		memcpy((void*)0x20000500, "\'$^({!*-\000", 9);
        		*(uint64_t*)0x200005a0 = 0x20000540;
        		memcpy((void*)0x20000540, "\000", 1);
        		*(uint64_t*)0x20000740 = 0x200005c0;
        		memcpy((void*)0x200005c0, "^\304)\000", 4);
        		*(uint64_t*)0x20000748 = 0x20000600;
        		memcpy((void*)0x20000600, "\000", 1);
        		*(uint64_t*)0x20000750 = 0x20000640;
        		memcpy((void*)0x20000640, "\'-#$.^!)\000", 9);
        		*(uint64_t*)0x20000758 = 0x20000680;
        		memcpy((void*)0x20000680, "\000", 1);
        		*(uint64_t*)0x20000760 = 0x200006c0;
        		memcpy((void*)0x200006c0, "(\000", 2);
        		*(uint64_t*)0x20000768 = 0x20000700;
        		memcpy((void*)0x20000700, "\000", 1);
        				syscall(SYS_execve, 0x20000400ul, 0x20000580ul, 0x20000740ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xd2\x39\x18\xdb\xd2\xd1\xc3\x7f\xaa\xbe\xb9\x1a\x92\x72\x35\xd4\xcc\x7f\x49\xd6\xae\x3b\xe5\xce\x00\xda\x87\xbb\x93\xa9\xd5\xea\x54\x24\xdc\xf2\x3c\x4b\xb1\x43\xab\x04\x34\x10\x9e\x92\x43\x84\xd4\xf0\xb7\xc1\x2a\xcf\x3e\xf5\x0c\xe9\x6f\x95\xeb\x34\xd1\xc8\x05\xb3\xa9\xb6\xa8\x6a\xc4\x0c\xf7\x03\xd8\x1b\xed\x00\x79\xb2\x8b\x50\x6a", 83);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\xc2\xe9\xf7\xfe\x8f\x49\xf8\x12\xc2\xc4\xa1\x51\x5c\x1d\x00\x00\x00\x00\xf3\x43\x0f\xae\xd2\xc4\x21\x9d\xd5\xc5\x8f\x68\x00\xec\xda\x82\x41\x0f\x01\x89\x07\x00\x00\x21\x36\x64\x44\x0f\x38\x1c\x53\xb2\x8f\x29\xb8\x99\xb2\x00\x00\x00\x21\xc4\xa3\xed\x0a\x7a\x00\x09", 67);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000140, "\xeb\xde\xc1\x3c\xe6\x9b\x02\xc5\x69\x26\xea\xb4\x7c\x68\x08\xaa\x6b\x56\x91\x53\xee\x22\x05\x63\xf4\x1c\x82\xc9\xce\x31\x47\xe6\x17\x9d\x47\x4c\x09\x99\x01\x25\x16\x3e\x4b\x2d\x6a\xd2\xb3\xb7\x70\x07\x77\x09\x2a\x93\x8a\xea\xfc\x00\x97\x38\x58\x3c\xd2\x80\x6f\x7c\x10\xdb\x70\x15\xbd\x2e\xc7\x8f\x6e\x39\xe6\x92\x7b\x06\x2e\x73\xbb\x58\x32\x91\xdf\xe2\x12\x60\xe0\x9c\x8e\x5f\xad\xa5\x11\x07\xfd\xf7\x2a\xce\xbf\xf7\xf0\xd3\xcc\x55\x5b\xfb\xeb\xa8\x55\x0b\xf6\xe4\x63\x22\x8a\x2c\xf8\xb2\x59\xb2\xc2\x1e\x3a\x96\x2f\x8b\xc0\x33\xef\xf9\x86\x2c\xa8\x43\x0f\x7a\x67\x53\x57\xca\xfc\x2d\x77\x09\x5e\xb2\xfd\x11\xc1\x88\x1f\x69\x8c\xbe\x02\x2d\xb9\x84\xc8\xfa\x24\x39\x40\xad\xc5\xf1\x30\x3d\x6b\x2e\x32\x82\x34\x1e\x30\xba\x61\xf4\xa2\x14\x2a\xb2\x97\x49\xdf\x98\xf4\xe4\xa6\xc3\xbb\x35\x14\x66\xd7\x33\x52\x8e\x4f\x3e\xc4\x4e\x01\xbb\x35\x4c\xdc\x02\x38\xcf\x8b\x4a\x5d\x21\xa7\x8f\x97\x26\xec\x59\x56\x2f\xb5", 227);
        		memcpy((void*)0x20000240, "\x93\x8e\xf0\xbc\xa6\xcb\xea\xb4\x2d\xed\x66\x3d\x21\x76\xd0\x1a\x07\x19\x40\x4b\x60\xe8\x3d\x84\x53\xf0\x1f\x69\x36\x86\x90\x76\x8f\x05\x50\x4c\x40\xe6\x0a\x72\xf4\xa5\x42\xef\x60\xa2\x1d\x76\x60\xc4\x34\x99\x84\xfb\x29\x9f\xdf\x95\xc0\x05\xbe\xa6\x7f\x46\xde\x57\x2e\x2d\x80\x26\xfd\x51\xa1\x91\xc8\xc8\xbc\xdf\x90\xc3\x08\xf7\x24\x40\xd7\xb8\x32\x23\x4c\xcc\x09\x79\x71\x9c\xf5\x80\x72\xf3\x12\x9a\xb7\x9e\xb5\x17\x91\x76\xbd\x1f\x88\x64\x79\xa1\xb7\x5d\xb2\x8d\xa1\x4b\x5a\xc1\x11\x43\x7e\x59\x39\xcc\xca\x7f\x25\xee\x5e\xf6\x58\xe9\xd9\x42\x26\x0d\x73\xf9\x5a\xcf\x30\x42\xaa\x91\xc9\xb4\x52\x76\x13\x14\x16\x7e\x1b\x8b\xdf\xc3\x63\xad\xf9\x38\x68\xdd\x80\x59\x8d\x4a\xd9\xce\x40\x05\x76\x15\x57\xcc\xeb\xc3\x77\x5a\x86\xba\x7f\x9c\x63\xf6\x5d\x40\xb2\x4b\xfa\x16\x73\x27\xe0\x00\x7e\x2c\x53\xfc\x54\xed\x62\x8b\x4c\xcd\xad\xcd\xf0\xe8\x18\x8a\xfd\x27\x40\x43\x49", 217);
        				res = syz_usb_connect(0x50f, 0xe3, 0x20000140, 0x20000240);
        				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-executor673885636 -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 (0.38s)
        	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:
        		utimes(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x10001, 0x5fd69e51}, {0xfffffffffffff201, 0x3969}})
        		lstat(0xffffffffffffffff, &(0x7f0000000080))
        		execve(&(0x7f0000000140)='./file0\x00', 0x0, &(0x7f0000000180))
        		r0 = accept$inet(0xffffffffffffff9c, &(0x7f00000001c0), &(0x7f0000000200)=0xc)
        		getsockopt$sock_timeval(r0, 0xffff, 0x100c, &(0x7f0000000240), &(0x7f0000000280)=0x10)
        		r1 = accept$inet(0xffffffffffffff9c, &(0x7f00000002c0), &(0x7f0000000300)=0xc)
        		getpeername(r1, &(0x7f0000000340)=@in, &(0x7f0000000380)=0xc)
        		r2 = socket$inet(0x2, 0x2, 0xfc)
        		setsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f00000003c0)="1ef56ab09639c2b6d1d9f4c2673c326203c1a42261e9f1a12cb03084036dea5115c70f967ec71facea566d169319f9b65fd8360562f479c2950f", 0x3a)
        		execve(&(0x7f0000000400)='./file0\x00', &(0x7f0000000580)=[&(0x7f0000000440)='[!\'{\x00', &(0x7f0000000480)='&\x00', &(0x7f00000004c0)='\x00', &(0x7f0000000500)='\'$^({!*-\x00', &(0x7f0000000540)='\x00'], &(0x7f0000000740)=[&(0x7f00000005c0)='^\xc4)\x00', &(0x7f0000000600)='\x00', &(0x7f0000000640)='\'-#$.^!)\x00', &(0x7f0000000680)='\x00', &(0x7f00000006c0)='(\x00', &(0x7f0000000700)='\x00'])
        		syz_emit_ethernet(0x53, &(0x7f0000000000)="d23918dbd2d1c37faabeb91a927235d4cc7f49d6ae3be5ce00da87bb93a9d5ea5424dcf23c4bb143ab0434109e924384d4f0b7c12acf3ef50ce96f95eb34d1c805b3a9b6a86ac40cf703d81bed0079b28b506a")
        		syz_execute_func(&(0x7f0000000080)="c4c2e9f7fe8f49f812c2c4a1515c1d00000000f3430faed2c4219dd5c58f6800ecda82410f0189070000213664440f381c53b28f29b899b200000021c4a3ed0a7a0009")
        		syz_extract_tcp_res(&(0x7f0000000100), 0x4, 0xffff)
        		r3 = syz_usb_connect(0x50f, 0xe3, &(0x7f0000000140)="ebdec13ce69b02c56926eab47c6808aa6b569153ee220563f41c82c9ce3147e6179d474c09990125163e4b2d6ad2b3b7700777092a938aeafc009738583cd2806f7c10db7015bd2ec78f6e39e6927b062e73bb583291dfe21260e09c8e5fada51107fdf72acebff7f0d3cc555bfbeba8550bf6e463228a2cf8b259b2c21e3a962f8bc033eff9862ca8430f7a675357cafc2d77095eb2fd11c1881f698cbe022db984c8fa243940adc5f1303d6b2e3282341e30ba61f4a2142ab29749df98f4e4a6c3bb351466d733528e4f3ec44e01bb354cdc0238cf8b4a5d21a78f9726ec59562fb5", &(0x7f0000000240)="938ef0bca6cbeab42ded663d2176d01a0719404b60e83d8453f01f69368690768f05504c40e60a72f4a542ef60a21d7660c4349984fb299fdf95c005bea67f46de572e2d8026fd51a191c8c8bcdf90c308f72440d7b832234ccc0979719cf58072f3129ab79eb5179176bd1f886479a1b75db28da14b5ac111437e5939ccca7f25ee5ef658e9d942260d73f95acf3042aa91c9b452761314167e1b8bdfc363adf93868dd80598d4ad9ce4005761557ccebc3775a86ba7f9c63f65d40b24bfa167327e0007e2c53fc54ed628b4ccdadcdf0e8188afd27404349")
        		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_execve
        		#define SYS_execve 59
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lstat
        		#define SYS_lstat 441
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_setsockopt
        		#define SYS_setsockopt 105
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		
        		uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        		*(uint64_t*)0x20000040 = 0x10001;
        		*(uint64_t*)0x20000048 = 0x5fd69e51;
        		*(uint64_t*)0x20000050 = 0xfffffffffffff201;
        		*(uint64_t*)0x20000058 = 0x3969;
        				syscall(SYS_utimes, 0x20000000ul, 0x20000040ul);
        				break;
        			case 1:
        				syscall(SYS_lstat, -1ul, 0x20000080ul);
        				break;
        			case 2:
        		memcpy((void*)0x20000140, "./file0\000", 8);
        				syscall(SYS_execve, 0x20000140ul, 0ul, 0x20000180ul);
        				break;
        			case 3:
        		*(uint32_t*)0x20000200 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200001c0ul, 0x20000200ul);
        				if (res != -1)
        						r[0] = res;
        				break;
        			case 4:
        		*(uint32_t*)0x20000280 = 0x10;
        				syscall(SYS_getsockopt, r[0], 0xffff, 0x100c, 0x20000240ul, 0x20000280ul);
        				break;
        			case 5:
        		*(uint32_t*)0x20000300 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200002c0ul, 0x20000300ul);
        				if (res != -1)
        						r[1] = res;
        				break;
        			case 6:
        		*(uint32_t*)0x20000380 = 0xc;
        				syscall(SYS_getpeername, r[1], 0x20000340ul, 0x20000380ul);
        				break;
        			case 7:
        				res = syscall(SYS_socket, 2ul, 2ul, 0xfc);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 8:
        		memcpy((void*)0x200003c0, "\x1e\xf5\x6a\xb0\x96\x39\xc2\xb6\xd1\xd9\xf4\xc2\x67\x3c\x32\x62\x03\xc1\xa4\x22\x61\xe9\xf1\xa1\x2c\xb0\x30\x84\x03\x6d\xea\x51\x15\xc7\x0f\x96\x7e\xc7\x1f\xac\xea\x56\x6d\x16\x93\x19\xf9\xb6\x5f\xd8\x36\x05\x62\xf4\x79\xc2\x95\x0f", 58);
        				syscall(SYS_setsockopt, r[2], 0, 1, 0x200003c0ul, 0x3aul);
        				break;
        			case 9:
        		memcpy((void*)0x20000400, "./file0\000", 8);
        		*(uint64_t*)0x20000580 = 0x20000440;
        		memcpy((void*)0x20000440, "[!\'{\000", 5);
        		*(uint64_t*)0x20000588 = 0x20000480;
        		memcpy((void*)0x20000480, "&\000", 2);
        		*(uint64_t*)0x20000590 = 0x200004c0;
        		memcpy((void*)0x200004c0, "\000", 1);
        		*(uint64_t*)0x20000598 = 0x20000500;
        		memcpy((void*)0x20000500, "\'$^({!*-\000", 9);
        		*(uint64_t*)0x200005a0 = 0x20000540;
        		memcpy((void*)0x20000540, "\000", 1);
        		*(uint64_t*)0x20000740 = 0x200005c0;
        		memcpy((void*)0x200005c0, "^\304)\000", 4);
        		*(uint64_t*)0x20000748 = 0x20000600;
        		memcpy((void*)0x20000600, "\000", 1);
        		*(uint64_t*)0x20000750 = 0x20000640;
        		memcpy((void*)0x20000640, "\'-#$.^!)\000", 9);
        		*(uint64_t*)0x20000758 = 0x20000680;
        		memcpy((void*)0x20000680, "\000", 1);
        		*(uint64_t*)0x20000760 = 0x200006c0;
        		memcpy((void*)0x200006c0, "(\000", 2);
        		*(uint64_t*)0x20000768 = 0x20000700;
        		memcpy((void*)0x20000700, "\000", 1);
        				syscall(SYS_execve, 0x20000400ul, 0x20000580ul, 0x20000740ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xd2\x39\x18\xdb\xd2\xd1\xc3\x7f\xaa\xbe\xb9\x1a\x92\x72\x35\xd4\xcc\x7f\x49\xd6\xae\x3b\xe5\xce\x00\xda\x87\xbb\x93\xa9\xd5\xea\x54\x24\xdc\xf2\x3c\x4b\xb1\x43\xab\x04\x34\x10\x9e\x92\x43\x84\xd4\xf0\xb7\xc1\x2a\xcf\x3e\xf5\x0c\xe9\x6f\x95\xeb\x34\xd1\xc8\x05\xb3\xa9\xb6\xa8\x6a\xc4\x0c\xf7\x03\xd8\x1b\xed\x00\x79\xb2\x8b\x50\x6a", 83);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\xc2\xe9\xf7\xfe\x8f\x49\xf8\x12\xc2\xc4\xa1\x51\x5c\x1d\x00\x00\x00\x00\xf3\x43\x0f\xae\xd2\xc4\x21\x9d\xd5\xc5\x8f\x68\x00\xec\xda\x82\x41\x0f\x01\x89\x07\x00\x00\x21\x36\x64\x44\x0f\x38\x1c\x53\xb2\x8f\x29\xb8\x99\xb2\x00\x00\x00\x21\xc4\xa3\xed\x0a\x7a\x00\x09", 67);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000140, "\xeb\xde\xc1\x3c\xe6\x9b\x02\xc5\x69\x26\xea\xb4\x7c\x68\x08\xaa\x6b\x56\x91\x53\xee\x22\x05\x63\xf4\x1c\x82\xc9\xce\x31\x47\xe6\x17\x9d\x47\x4c\x09\x99\x01\x25\x16\x3e\x4b\x2d\x6a\xd2\xb3\xb7\x70\x07\x77\x09\x2a\x93\x8a\xea\xfc\x00\x97\x38\x58\x3c\xd2\x80\x6f\x7c\x10\xdb\x70\x15\xbd\x2e\xc7\x8f\x6e\x39\xe6\x92\x7b\x06\x2e\x73\xbb\x58\x32\x91\xdf\xe2\x12\x60\xe0\x9c\x8e\x5f\xad\xa5\x11\x07\xfd\xf7\x2a\xce\xbf\xf7\xf0\xd3\xcc\x55\x5b\xfb\xeb\xa8\x55\x0b\xf6\xe4\x63\x22\x8a\x2c\xf8\xb2\x59\xb2\xc2\x1e\x3a\x96\x2f\x8b\xc0\x33\xef\xf9\x86\x2c\xa8\x43\x0f\x7a\x67\x53\x57\xca\xfc\x2d\x77\x09\x5e\xb2\xfd\x11\xc1\x88\x1f\x69\x8c\xbe\x02\x2d\xb9\x84\xc8\xfa\x24\x39\x40\xad\xc5\xf1\x30\x3d\x6b\x2e\x32\x82\x34\x1e\x30\xba\x61\xf4\xa2\x14\x2a\xb2\x97\x49\xdf\x98\xf4\xe4\xa6\xc3\xbb\x35\x14\x66\xd7\x33\x52\x8e\x4f\x3e\xc4\x4e\x01\xbb\x35\x4c\xdc\x02\x38\xcf\x8b\x4a\x5d\x21\xa7\x8f\x97\x26\xec\x59\x56\x2f\xb5", 227);
        		memcpy((void*)0x20000240, "\x93\x8e\xf0\xbc\xa6\xcb\xea\xb4\x2d\xed\x66\x3d\x21\x76\xd0\x1a\x07\x19\x40\x4b\x60\xe8\x3d\x84\x53\xf0\x1f\x69\x36\x86\x90\x76\x8f\x05\x50\x4c\x40\xe6\x0a\x72\xf4\xa5\x42\xef\x60\xa2\x1d\x76\x60\xc4\x34\x99\x84\xfb\x29\x9f\xdf\x95\xc0\x05\xbe\xa6\x7f\x46\xde\x57\x2e\x2d\x80\x26\xfd\x51\xa1\x91\xc8\xc8\xbc\xdf\x90\xc3\x08\xf7\x24\x40\xd7\xb8\x32\x23\x4c\xcc\x09\x79\x71\x9c\xf5\x80\x72\xf3\x12\x9a\xb7\x9e\xb5\x17\x91\x76\xbd\x1f\x88\x64\x79\xa1\xb7\x5d\xb2\x8d\xa1\x4b\x5a\xc1\x11\x43\x7e\x59\x39\xcc\xca\x7f\x25\xee\x5e\xf6\x58\xe9\xd9\x42\x26\x0d\x73\xf9\x5a\xcf\x30\x42\xaa\x91\xc9\xb4\x52\x76\x13\x14\x16\x7e\x1b\x8b\xdf\xc3\x63\xad\xf9\x38\x68\xdd\x80\x59\x8d\x4a\xd9\xce\x40\x05\x76\x15\x57\xcc\xeb\xc3\x77\x5a\x86\xba\x7f\x9c\x63\xf6\x5d\x40\xb2\x4b\xfa\x16\x73\x27\xe0\x00\x7e\x2c\x53\xfc\x54\xed\x62\x8b\x4c\xcd\xad\xcd\xf0\xe8\x18\x8a\xfd\x27\x40\x43\x49", 217);
        				res = syz_usb_connect(0x50f, 0xe3, 0x20000140, 0x20000240);
        				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-executor292985273 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/12 (0.46s)
        	csource_test.go:123: opts: {Threaded:true Collide:false Repeat:true RepeatTimes:0 Procs:0 Sandbox:none Fault:false FaultCall:0 FaultNth:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false UseTmpDir:true HandleSegv:false Repro:true Trace:false}
        		program:
        		utimes(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x10001, 0x5fd69e51}, {0xfffffffffffff201, 0x3969}})
        		lstat(0xffffffffffffffff, &(0x7f0000000080))
        		execve(&(0x7f0000000140)='./file0\x00', 0x0, &(0x7f0000000180))
        		r0 = accept$inet(0xffffffffffffff9c, &(0x7f00000001c0), &(0x7f0000000200)=0xc)
        		getsockopt$sock_timeval(r0, 0xffff, 0x100c, &(0x7f0000000240), &(0x7f0000000280)=0x10)
        		r1 = accept$inet(0xffffffffffffff9c, &(0x7f00000002c0), &(0x7f0000000300)=0xc)
        		getpeername(r1, &(0x7f0000000340)=@in, &(0x7f0000000380)=0xc)
        		r2 = socket$inet(0x2, 0x2, 0xfc)
        		setsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f00000003c0)="1ef56ab09639c2b6d1d9f4c2673c326203c1a42261e9f1a12cb03084036dea5115c70f967ec71facea566d169319f9b65fd8360562f479c2950f", 0x3a)
        		execve(&(0x7f0000000400)='./file0\x00', &(0x7f0000000580)=[&(0x7f0000000440)='[!\'{\x00', &(0x7f0000000480)='&\x00', &(0x7f00000004c0)='\x00', &(0x7f0000000500)='\'$^({!*-\x00', &(0x7f0000000540)='\x00'], &(0x7f0000000740)=[&(0x7f00000005c0)='^\xc4)\x00', &(0x7f0000000600)='\x00', &(0x7f0000000640)='\'-#$.^!)\x00', &(0x7f0000000680)='\x00', &(0x7f00000006c0)='(\x00', &(0x7f0000000700)='\x00'])
        		syz_emit_ethernet(0x53, &(0x7f0000000000)="d23918dbd2d1c37faabeb91a927235d4cc7f49d6ae3be5ce00da87bb93a9d5ea5424dcf23c4bb143ab0434109e924384d4f0b7c12acf3ef50ce96f95eb34d1c805b3a9b6a86ac40cf703d81bed0079b28b506a")
        		syz_execute_func(&(0x7f0000000080)="c4c2e9f7fe8f49f812c2c4a1515c1d00000000f3430faed2c4219dd5c58f6800ecda82410f0189070000213664440f381c53b28f29b899b200000021c4a3ed0a7a0009")
        		syz_extract_tcp_res(&(0x7f0000000100), 0x4, 0xffff)
        		r3 = syz_usb_connect(0x50f, 0xe3, &(0x7f0000000140)="ebdec13ce69b02c56926eab47c6808aa6b569153ee220563f41c82c9ce3147e6179d474c09990125163e4b2d6ad2b3b7700777092a938aeafc009738583cd2806f7c10db7015bd2ec78f6e39e6927b062e73bb583291dfe21260e09c8e5fada51107fdf72acebff7f0d3cc555bfbeba8550bf6e463228a2cf8b259b2c21e3a962f8bc033eff9862ca8430f7a675357cafc2d77095eb2fd11c1881f698cbe022db984c8fa243940adc5f1303d6b2e3282341e30ba61f4a2142ab29749df98f4e4a6c3bb351466d733528e4f3ec44e01bb354cdc0238cf8b4a5d21a78f9726ec59562fb5", &(0x7f0000000240)="938ef0bca6cbeab42ded663d2176d01a0719404b60e83d8453f01f69368690768f05504c40e60a72f4a542ef60a21d7660c4349984fb299fdf95c005bea67f46de572e2d8026fd51a191c8c8bcdf90c308f72440d7b832234ccc0979719cf58072f3129ab79eb5179176bd1f886479a1b75db28da14b5ac111437e5939ccca7f25ee5ef658e9d942260d73f95acf3042aa91c9b452761314167e1b8bdfc363adf93868dd80598d4ad9ce4005761557ccebc3775a86ba7f9c63f65d40b24bfa167327e0007e2c53fc54ed628b4ccdadcdf0e8188afd27404349")
        		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)
        		{
        			if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
        			}
        			int i, call, thread;
        			for (call = 0; call < 15; call++) {
        				for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) {
        					struct thread_t* th = &threads[thread];
        					if (!th->created) {
        						th->created = 1;
        						event_init(&th->ready);
        						event_init(&th->done);
        						event_set(&th->done);
        						thread_start(thr, th);
        					}
        					if (!event_isset(&th->done))
        						continue;
        					event_reset(&th->done);
        					th->call = call;
        					__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        					event_set(&th->ready);
        					event_timedwait(&th->done, 45 + (call == 13 ? 3000 : 0) + (call == 14 ? 300 : 0));
        					break;
        				}
        			}
        			for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
        				sleep_ms(1);
        		}
        		
        		static void execute_one(void);
        		
        		#define WAIT_FLAGS 0
        		
        		static void loop(void)
        		{
        			int iter;
        			for (iter = 0;; iter++) {
        				char cwdbuf[32];
        				sprintf(cwdbuf, "./%d", iter);
        				if (mkdir(cwdbuf, 0777))
        			exit(1);
        				int pid = fork();
        				if (pid < 0)
        			exit(1);
        				if (pid == 0) {
        					if (chdir(cwdbuf))
        			exit(1);
        					execute_one();
        					exit(0);
        				}
        				int status = 0;
        				uint64_t start = current_time_ms();
        				for (;;) {
        					if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        						break;
        					sleep_ms(1);
        					if (current_time_ms() - start < 5 * 1000)
        						continue;
        					kill_and_wait(pid, &status);
        					break;
        				}
        				remove_dir(cwdbuf);
        			}
        		}
        		
        		#ifndef SYS_accept
        		#define SYS_accept 30
        		#endif
        		#ifndef SYS_execve
        		#define SYS_execve 59
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lstat
        		#define SYS_lstat 441
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_setsockopt
        		#define SYS_setsockopt 105
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		
        		uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        		*(uint64_t*)0x20000040 = 0x10001;
        		*(uint64_t*)0x20000048 = 0x5fd69e51;
        		*(uint64_t*)0x20000050 = 0xfffffffffffff201;
        		*(uint64_t*)0x20000058 = 0x3969;
        				syscall(SYS_utimes, 0x20000000ul, 0x20000040ul);
        				break;
        			case 1:
        				syscall(SYS_lstat, -1ul, 0x20000080ul);
        				break;
        			case 2:
        		memcpy((void*)0x20000140, "./file0\000", 8);
        				syscall(SYS_execve, 0x20000140ul, 0ul, 0x20000180ul);
        				break;
        			case 3:
        		*(uint32_t*)0x20000200 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200001c0ul, 0x20000200ul);
        				if (res != -1)
        						r[0] = res;
        				break;
        			case 4:
        		*(uint32_t*)0x20000280 = 0x10;
        				syscall(SYS_getsockopt, r[0], 0xffff, 0x100c, 0x20000240ul, 0x20000280ul);
        				break;
        			case 5:
        		*(uint32_t*)0x20000300 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200002c0ul, 0x20000300ul);
        				if (res != -1)
        						r[1] = res;
        				break;
        			case 6:
        		*(uint32_t*)0x20000380 = 0xc;
        				syscall(SYS_getpeername, r[1], 0x20000340ul, 0x20000380ul);
        				break;
        			case 7:
        				res = syscall(SYS_socket, 2ul, 2ul, 0xfc);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 8:
        		memcpy((void*)0x200003c0, "\x1e\xf5\x6a\xb0\x96\x39\xc2\xb6\xd1\xd9\xf4\xc2\x67\x3c\x32\x62\x03\xc1\xa4\x22\x61\xe9\xf1\xa1\x2c\xb0\x30\x84\x03\x6d\xea\x51\x15\xc7\x0f\x96\x7e\xc7\x1f\xac\xea\x56\x6d\x16\x93\x19\xf9\xb6\x5f\xd8\x36\x05\x62\xf4\x79\xc2\x95\x0f", 58);
        				syscall(SYS_setsockopt, r[2], 0, 1, 0x200003c0ul, 0x3aul);
        				break;
        			case 9:
        		memcpy((void*)0x20000400, "./file0\000", 8);
        		*(uint64_t*)0x20000580 = 0x20000440;
        		memcpy((void*)0x20000440, "[!\'{\000", 5);
        		*(uint64_t*)0x20000588 = 0x20000480;
        		memcpy((void*)0x20000480, "&\000", 2);
        		*(uint64_t*)0x20000590 = 0x200004c0;
        		memcpy((void*)0x200004c0, "\000", 1);
        		*(uint64_t*)0x20000598 = 0x20000500;
        		memcpy((void*)0x20000500, "\'$^({!*-\000", 9);
        		*(uint64_t*)0x200005a0 = 0x20000540;
        		memcpy((void*)0x20000540, "\000", 1);
        		*(uint64_t*)0x20000740 = 0x200005c0;
        		memcpy((void*)0x200005c0, "^\304)\000", 4);
        		*(uint64_t*)0x20000748 = 0x20000600;
        		memcpy((void*)0x20000600, "\000", 1);
        		*(uint64_t*)0x20000750 = 0x20000640;
        		memcpy((void*)0x20000640, "\'-#$.^!)\000", 9);
        		*(uint64_t*)0x20000758 = 0x20000680;
        		memcpy((void*)0x20000680, "\000", 1);
        		*(uint64_t*)0x20000760 = 0x200006c0;
        		memcpy((void*)0x200006c0, "(\000", 2);
        		*(uint64_t*)0x20000768 = 0x20000700;
        		memcpy((void*)0x20000700, "\000", 1);
        				syscall(SYS_execve, 0x20000400ul, 0x20000580ul, 0x20000740ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xd2\x39\x18\xdb\xd2\xd1\xc3\x7f\xaa\xbe\xb9\x1a\x92\x72\x35\xd4\xcc\x7f\x49\xd6\xae\x3b\xe5\xce\x00\xda\x87\xbb\x93\xa9\xd5\xea\x54\x24\xdc\xf2\x3c\x4b\xb1\x43\xab\x04\x34\x10\x9e\x92\x43\x84\xd4\xf0\xb7\xc1\x2a\xcf\x3e\xf5\x0c\xe9\x6f\x95\xeb\x34\xd1\xc8\x05\xb3\xa9\xb6\xa8\x6a\xc4\x0c\xf7\x03\xd8\x1b\xed\x00\x79\xb2\x8b\x50\x6a", 83);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\xc2\xe9\xf7\xfe\x8f\x49\xf8\x12\xc2\xc4\xa1\x51\x5c\x1d\x00\x00\x00\x00\xf3\x43\x0f\xae\xd2\xc4\x21\x9d\xd5\xc5\x8f\x68\x00\xec\xda\x82\x41\x0f\x01\x89\x07\x00\x00\x21\x36\x64\x44\x0f\x38\x1c\x53\xb2\x8f\x29\xb8\x99\xb2\x00\x00\x00\x21\xc4\xa3\xed\x0a\x7a\x00\x09", 67);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000140, "\xeb\xde\xc1\x3c\xe6\x9b\x02\xc5\x69\x26\xea\xb4\x7c\x68\x08\xaa\x6b\x56\x91\x53\xee\x22\x05\x63\xf4\x1c\x82\xc9\xce\x31\x47\xe6\x17\x9d\x47\x4c\x09\x99\x01\x25\x16\x3e\x4b\x2d\x6a\xd2\xb3\xb7\x70\x07\x77\x09\x2a\x93\x8a\xea\xfc\x00\x97\x38\x58\x3c\xd2\x80\x6f\x7c\x10\xdb\x70\x15\xbd\x2e\xc7\x8f\x6e\x39\xe6\x92\x7b\x06\x2e\x73\xbb\x58\x32\x91\xdf\xe2\x12\x60\xe0\x9c\x8e\x5f\xad\xa5\x11\x07\xfd\xf7\x2a\xce\xbf\xf7\xf0\xd3\xcc\x55\x5b\xfb\xeb\xa8\x55\x0b\xf6\xe4\x63\x22\x8a\x2c\xf8\xb2\x59\xb2\xc2\x1e\x3a\x96\x2f\x8b\xc0\x33\xef\xf9\x86\x2c\xa8\x43\x0f\x7a\x67\x53\x57\xca\xfc\x2d\x77\x09\x5e\xb2\xfd\x11\xc1\x88\x1f\x69\x8c\xbe\x02\x2d\xb9\x84\xc8\xfa\x24\x39\x40\xad\xc5\xf1\x30\x3d\x6b\x2e\x32\x82\x34\x1e\x30\xba\x61\xf4\xa2\x14\x2a\xb2\x97\x49\xdf\x98\xf4\xe4\xa6\xc3\xbb\x35\x14\x66\xd7\x33\x52\x8e\x4f\x3e\xc4\x4e\x01\xbb\x35\x4c\xdc\x02\x38\xcf\x8b\x4a\x5d\x21\xa7\x8f\x97\x26\xec\x59\x56\x2f\xb5", 227);
        		memcpy((void*)0x20000240, "\x93\x8e\xf0\xbc\xa6\xcb\xea\xb4\x2d\xed\x66\x3d\x21\x76\xd0\x1a\x07\x19\x40\x4b\x60\xe8\x3d\x84\x53\xf0\x1f\x69\x36\x86\x90\x76\x8f\x05\x50\x4c\x40\xe6\x0a\x72\xf4\xa5\x42\xef\x60\xa2\x1d\x76\x60\xc4\x34\x99\x84\xfb\x29\x9f\xdf\x95\xc0\x05\xbe\xa6\x7f\x46\xde\x57\x2e\x2d\x80\x26\xfd\x51\xa1\x91\xc8\xc8\xbc\xdf\x90\xc3\x08\xf7\x24\x40\xd7\xb8\x32\x23\x4c\xcc\x09\x79\x71\x9c\xf5\x80\x72\xf3\x12\x9a\xb7\x9e\xb5\x17\x91\x76\xbd\x1f\x88\x64\x79\xa1\xb7\x5d\xb2\x8d\xa1\x4b\x5a\xc1\x11\x43\x7e\x59\x39\xcc\xca\x7f\x25\xee\x5e\xf6\x58\xe9\xd9\x42\x26\x0d\x73\xf9\x5a\xcf\x30\x42\xaa\x91\xc9\xb4\x52\x76\x13\x14\x16\x7e\x1b\x8b\xdf\xc3\x63\xad\xf9\x38\x68\xdd\x80\x59\x8d\x4a\xd9\xce\x40\x05\x76\x15\x57\xcc\xeb\xc3\x77\x5a\x86\xba\x7f\x9c\x63\xf6\x5d\x40\xb2\x4b\xfa\x16\x73\x27\xe0\x00\x7e\x2c\x53\xfc\x54\xed\x62\x8b\x4c\xcd\xad\xcd\xf0\xe8\x18\x8a\xfd\x27\x40\x43\x49", 217);
        				res = syz_usb_connect(0x50f, 0xe3, 0x20000140, 0x20000240);
        				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-executor699901752 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/14 (0.46s)
        	csource_test.go:123: opts: {Threaded:true Collide:true Repeat:true RepeatTimes:0 Procs:2 Sandbox:none Fault:false FaultCall:0 FaultNth:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false USB:false UseTmpDir:true HandleSegv:false Repro:true Trace:false}
        		program:
        		utimes(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x10001, 0x5fd69e51}, {0xfffffffffffff201, 0x3969}})
        		lstat(0xffffffffffffffff, &(0x7f0000000080))
        		execve(&(0x7f0000000140)='./file0\x00', 0x0, &(0x7f0000000180))
        		r0 = accept$inet(0xffffffffffffff9c, &(0x7f00000001c0), &(0x7f0000000200)=0xc)
        		getsockopt$sock_timeval(r0, 0xffff, 0x100c, &(0x7f0000000240), &(0x7f0000000280)=0x10)
        		r1 = accept$inet(0xffffffffffffff9c, &(0x7f00000002c0), &(0x7f0000000300)=0xc)
        		getpeername(r1, &(0x7f0000000340)=@in, &(0x7f0000000380)=0xc)
        		r2 = socket$inet(0x2, 0x2, 0xfc)
        		setsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f00000003c0)="1ef56ab09639c2b6d1d9f4c2673c326203c1a42261e9f1a12cb03084036dea5115c70f967ec71facea566d169319f9b65fd8360562f479c2950f", 0x3a)
        		execve(&(0x7f0000000400)='./file0\x00', &(0x7f0000000580)=[&(0x7f0000000440)='[!\'{\x00', &(0x7f0000000480)='&\x00', &(0x7f00000004c0)='\x00', &(0x7f0000000500)='\'$^({!*-\x00', &(0x7f0000000540)='\x00'], &(0x7f0000000740)=[&(0x7f00000005c0)='^\xc4)\x00', &(0x7f0000000600)='\x00', &(0x7f0000000640)='\'-#$.^!)\x00', &(0x7f0000000680)='\x00', &(0x7f00000006c0)='(\x00', &(0x7f0000000700)='\x00'])
        		syz_emit_ethernet(0x53, &(0x7f0000000000)="d23918dbd2d1c37faabeb91a927235d4cc7f49d6ae3be5ce00da87bb93a9d5ea5424dcf23c4bb143ab0434109e924384d4f0b7c12acf3ef50ce96f95eb34d1c805b3a9b6a86ac40cf703d81bed0079b28b506a")
        		syz_execute_func(&(0x7f0000000080)="c4c2e9f7fe8f49f812c2c4a1515c1d00000000f3430faed2c4219dd5c58f6800ecda82410f0189070000213664440f381c53b28f29b899b200000021c4a3ed0a7a0009")
        		syz_extract_tcp_res(&(0x7f0000000100), 0x4, 0xffff)
        		r3 = syz_usb_connect(0x50f, 0xe3, &(0x7f0000000140)="ebdec13ce69b02c56926eab47c6808aa6b569153ee220563f41c82c9ce3147e6179d474c09990125163e4b2d6ad2b3b7700777092a938aeafc009738583cd2806f7c10db7015bd2ec78f6e39e6927b062e73bb583291dfe21260e09c8e5fada51107fdf72acebff7f0d3cc555bfbeba8550bf6e463228a2cf8b259b2c21e3a962f8bc033eff9862ca8430f7a675357cafc2d77095eb2fd11c1881f698cbe022db984c8fa243940adc5f1303d6b2e3282341e30ba61f4a2142ab29749df98f4e4a6c3bb351466d733528e4f3ec44e01bb354cdc0238cf8b4a5d21a78f9726ec59562fb5", &(0x7f0000000240)="938ef0bca6cbeab42ded663d2176d01a0719404b60e83d8453f01f69368690768f05504c40e60a72f4a542ef60a21d7660c4349984fb299fdf95c005bea67f46de572e2d8026fd51a191c8c8bcdf90c308f72440d7b832234ccc0979719cf58072f3129ab79eb5179176bd1f886479a1b75db28da14b5ac111437e5939ccca7f25ee5ef658e9d942260d73f95acf3042aa91c9b452761314167e1b8bdfc363adf93868dd80598d4ad9ce4005761557ccebc3775a86ba7f9c63f65d40b24bfa167327e0007e2c53fc54ed628b4ccdadcdf0e8188afd27404349")
        		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)
        		{
        			if (write(1, "executing program\n", sizeof("executing program\n") - 1)) {
        			}
        			int i, call, thread;
        			int collide = 0;
        		again:
        			for (call = 0; call < 15; call++) {
        				for (thread = 0; thread < (int)(sizeof(threads) / sizeof(threads[0])); thread++) {
        					struct thread_t* th = &threads[thread];
        					if (!th->created) {
        						th->created = 1;
        						event_init(&th->ready);
        						event_init(&th->done);
        						event_set(&th->done);
        						thread_start(thr, th);
        					}
        					if (!event_isset(&th->done))
        						continue;
        					event_reset(&th->done);
        					th->call = call;
        					__atomic_fetch_add(&running, 1, __ATOMIC_RELAXED);
        					event_set(&th->ready);
        					if (collide && (call % 2) == 0)
        						break;
        					event_timedwait(&th->done, 45 + (call == 13 ? 3000 : 0) + (call == 14 ? 300 : 0));
        					break;
        				}
        			}
        			for (i = 0; i < 100 && __atomic_load_n(&running, __ATOMIC_RELAXED); i++)
        				sleep_ms(1);
        			if (!collide) {
        				collide = 1;
        				goto again;
        			}
        		}
        		
        		static void execute_one(void);
        		
        		#define WAIT_FLAGS 0
        		
        		static void loop(void)
        		{
        			int iter;
        			for (iter = 0;; iter++) {
        				char cwdbuf[32];
        				sprintf(cwdbuf, "./%d", iter);
        				if (mkdir(cwdbuf, 0777))
        			exit(1);
        				int pid = fork();
        				if (pid < 0)
        			exit(1);
        				if (pid == 0) {
        					if (chdir(cwdbuf))
        			exit(1);
        					execute_one();
        					exit(0);
        				}
        				int status = 0;
        				uint64_t start = current_time_ms();
        				for (;;) {
        					if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid)
        						break;
        					sleep_ms(1);
        					if (current_time_ms() - start < 5 * 1000)
        						continue;
        					kill_and_wait(pid, &status);
        					break;
        				}
        				remove_dir(cwdbuf);
        			}
        		}
        		
        		#ifndef SYS_accept
        		#define SYS_accept 30
        		#endif
        		#ifndef SYS_execve
        		#define SYS_execve 59
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lstat
        		#define SYS_lstat 441
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_setsockopt
        		#define SYS_setsockopt 105
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		
        		uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        		*(uint64_t*)0x20000040 = 0x10001;
        		*(uint64_t*)0x20000048 = 0x5fd69e51;
        		*(uint64_t*)0x20000050 = 0xfffffffffffff201;
        		*(uint64_t*)0x20000058 = 0x3969;
        				syscall(SYS_utimes, 0x20000000ul, 0x20000040ul);
        				break;
        			case 1:
        				syscall(SYS_lstat, -1ul, 0x20000080ul);
        				break;
        			case 2:
        		memcpy((void*)0x20000140, "./file0\000", 8);
        				syscall(SYS_execve, 0x20000140ul, 0ul, 0x20000180ul);
        				break;
        			case 3:
        		*(uint32_t*)0x20000200 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200001c0ul, 0x20000200ul);
        				if (res != -1)
        						r[0] = res;
        				break;
        			case 4:
        		*(uint32_t*)0x20000280 = 0x10;
        				syscall(SYS_getsockopt, r[0], 0xffff, 0x100c, 0x20000240ul, 0x20000280ul);
        				break;
        			case 5:
        		*(uint32_t*)0x20000300 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200002c0ul, 0x20000300ul);
        				if (res != -1)
        						r[1] = res;
        				break;
        			case 6:
        		*(uint32_t*)0x20000380 = 0xc;
        				syscall(SYS_getpeername, r[1], 0x20000340ul, 0x20000380ul);
        				break;
        			case 7:
        				res = syscall(SYS_socket, 2ul, 2ul, 0xfc);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 8:
        		memcpy((void*)0x200003c0, "\x1e\xf5\x6a\xb0\x96\x39\xc2\xb6\xd1\xd9\xf4\xc2\x67\x3c\x32\x62\x03\xc1\xa4\x22\x61\xe9\xf1\xa1\x2c\xb0\x30\x84\x03\x6d\xea\x51\x15\xc7\x0f\x96\x7e\xc7\x1f\xac\xea\x56\x6d\x16\x93\x19\xf9\xb6\x5f\xd8\x36\x05\x62\xf4\x79\xc2\x95\x0f", 58);
        				syscall(SYS_setsockopt, r[2], 0, 1, 0x200003c0ul, 0x3aul);
        				break;
        			case 9:
        		memcpy((void*)0x20000400, "./file0\000", 8);
        		*(uint64_t*)0x20000580 = 0x20000440;
        		memcpy((void*)0x20000440, "[!\'{\000", 5);
        		*(uint64_t*)0x20000588 = 0x20000480;
        		memcpy((void*)0x20000480, "&\000", 2);
        		*(uint64_t*)0x20000590 = 0x200004c0;
        		memcpy((void*)0x200004c0, "\000", 1);
        		*(uint64_t*)0x20000598 = 0x20000500;
        		memcpy((void*)0x20000500, "\'$^({!*-\000", 9);
        		*(uint64_t*)0x200005a0 = 0x20000540;
        		memcpy((void*)0x20000540, "\000", 1);
        		*(uint64_t*)0x20000740 = 0x200005c0;
        		memcpy((void*)0x200005c0, "^\304)\000", 4);
        		*(uint64_t*)0x20000748 = 0x20000600;
        		memcpy((void*)0x20000600, "\000", 1);
        		*(uint64_t*)0x20000750 = 0x20000640;
        		memcpy((void*)0x20000640, "\'-#$.^!)\000", 9);
        		*(uint64_t*)0x20000758 = 0x20000680;
        		memcpy((void*)0x20000680, "\000", 1);
        		*(uint64_t*)0x20000760 = 0x200006c0;
        		memcpy((void*)0x200006c0, "(\000", 2);
        		*(uint64_t*)0x20000768 = 0x20000700;
        		memcpy((void*)0x20000700, "\000", 1);
        				syscall(SYS_execve, 0x20000400ul, 0x20000580ul, 0x20000740ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xd2\x39\x18\xdb\xd2\xd1\xc3\x7f\xaa\xbe\xb9\x1a\x92\x72\x35\xd4\xcc\x7f\x49\xd6\xae\x3b\xe5\xce\x00\xda\x87\xbb\x93\xa9\xd5\xea\x54\x24\xdc\xf2\x3c\x4b\xb1\x43\xab\x04\x34\x10\x9e\x92\x43\x84\xd4\xf0\xb7\xc1\x2a\xcf\x3e\xf5\x0c\xe9\x6f\x95\xeb\x34\xd1\xc8\x05\xb3\xa9\xb6\xa8\x6a\xc4\x0c\xf7\x03\xd8\x1b\xed\x00\x79\xb2\x8b\x50\x6a", 83);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\xc2\xe9\xf7\xfe\x8f\x49\xf8\x12\xc2\xc4\xa1\x51\x5c\x1d\x00\x00\x00\x00\xf3\x43\x0f\xae\xd2\xc4\x21\x9d\xd5\xc5\x8f\x68\x00\xec\xda\x82\x41\x0f\x01\x89\x07\x00\x00\x21\x36\x64\x44\x0f\x38\x1c\x53\xb2\x8f\x29\xb8\x99\xb2\x00\x00\x00\x21\xc4\xa3\xed\x0a\x7a\x00\x09", 67);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000140, "\xeb\xde\xc1\x3c\xe6\x9b\x02\xc5\x69\x26\xea\xb4\x7c\x68\x08\xaa\x6b\x56\x91\x53\xee\x22\x05\x63\xf4\x1c\x82\xc9\xce\x31\x47\xe6\x17\x9d\x47\x4c\x09\x99\x01\x25\x16\x3e\x4b\x2d\x6a\xd2\xb3\xb7\x70\x07\x77\x09\x2a\x93\x8a\xea\xfc\x00\x97\x38\x58\x3c\xd2\x80\x6f\x7c\x10\xdb\x70\x15\xbd\x2e\xc7\x8f\x6e\x39\xe6\x92\x7b\x06\x2e\x73\xbb\x58\x32\x91\xdf\xe2\x12\x60\xe0\x9c\x8e\x5f\xad\xa5\x11\x07\xfd\xf7\x2a\xce\xbf\xf7\xf0\xd3\xcc\x55\x5b\xfb\xeb\xa8\x55\x0b\xf6\xe4\x63\x22\x8a\x2c\xf8\xb2\x59\xb2\xc2\x1e\x3a\x96\x2f\x8b\xc0\x33\xef\xf9\x86\x2c\xa8\x43\x0f\x7a\x67\x53\x57\xca\xfc\x2d\x77\x09\x5e\xb2\xfd\x11\xc1\x88\x1f\x69\x8c\xbe\x02\x2d\xb9\x84\xc8\xfa\x24\x39\x40\xad\xc5\xf1\x30\x3d\x6b\x2e\x32\x82\x34\x1e\x30\xba\x61\xf4\xa2\x14\x2a\xb2\x97\x49\xdf\x98\xf4\xe4\xa6\xc3\xbb\x35\x14\x66\xd7\x33\x52\x8e\x4f\x3e\xc4\x4e\x01\xbb\x35\x4c\xdc\x02\x38\xcf\x8b\x4a\x5d\x21\xa7\x8f\x97\x26\xec\x59\x56\x2f\xb5", 227);
        		memcpy((void*)0x20000240, "\x93\x8e\xf0\xbc\xa6\xcb\xea\xb4\x2d\xed\x66\x3d\x21\x76\xd0\x1a\x07\x19\x40\x4b\x60\xe8\x3d\x84\x53\xf0\x1f\x69\x36\x86\x90\x76\x8f\x05\x50\x4c\x40\xe6\x0a\x72\xf4\xa5\x42\xef\x60\xa2\x1d\x76\x60\xc4\x34\x99\x84\xfb\x29\x9f\xdf\x95\xc0\x05\xbe\xa6\x7f\x46\xde\x57\x2e\x2d\x80\x26\xfd\x51\xa1\x91\xc8\xc8\xbc\xdf\x90\xc3\x08\xf7\x24\x40\xd7\xb8\x32\x23\x4c\xcc\x09\x79\x71\x9c\xf5\x80\x72\xf3\x12\x9a\xb7\x9e\xb5\x17\x91\x76\xbd\x1f\x88\x64\x79\xa1\xb7\x5d\xb2\x8d\xa1\x4b\x5a\xc1\x11\x43\x7e\x59\x39\xcc\xca\x7f\x25\xee\x5e\xf6\x58\xe9\xd9\x42\x26\x0d\x73\xf9\x5a\xcf\x30\x42\xaa\x91\xc9\xb4\x52\x76\x13\x14\x16\x7e\x1b\x8b\xdf\xc3\x63\xad\xf9\x38\x68\xdd\x80\x59\x8d\x4a\xd9\xce\x40\x05\x76\x15\x57\xcc\xeb\xc3\x77\x5a\x86\xba\x7f\x9c\x63\xf6\x5d\x40\xb2\x4b\xfa\x16\x73\x27\xe0\x00\x7e\x2c\x53\xfc\x54\xed\x62\x8b\x4c\xcd\xad\xcd\xf0\xe8\x18\x8a\xfd\x27\x40\x43\x49", 217);
        				res = syz_usb_connect(0x50f, 0xe3, 0x20000140, 0x20000240);
        				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 < 2; procid++) {
        				if (fork() == 0) {
        					use_temporary_dir();
        					do_sandbox_none();
        				}
        			}
        			sleep(1000000);
        			return 0;
        		}
        		
        		<stdin>: In function 'syz_usb_connect_impl':
        		<stdin>:637:63: error: unknown type name 'usb_ctrlrequest'
        		<stdin>:642:55: error: unknown type name 'usb_ctrlrequest'
        		
        		compiler invocation: /syzkaller/netbsd/src/../tools/bin/x86_64--netbsd-g++ [-o /tmp/syz-executor935742358 -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 (0.46s)
        	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:
        		utimes(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x10001, 0x5fd69e51}, {0xfffffffffffff201, 0x3969}})
        		lstat(0xffffffffffffffff, &(0x7f0000000080))
        		execve(&(0x7f0000000140)='./file0\x00', 0x0, &(0x7f0000000180))
        		r0 = accept$inet(0xffffffffffffff9c, &(0x7f00000001c0), &(0x7f0000000200)=0xc)
        		getsockopt$sock_timeval(r0, 0xffff, 0x100c, &(0x7f0000000240), &(0x7f0000000280)=0x10)
        		r1 = accept$inet(0xffffffffffffff9c, &(0x7f00000002c0), &(0x7f0000000300)=0xc)
        		getpeername(r1, &(0x7f0000000340)=@in, &(0x7f0000000380)=0xc)
        		r2 = socket$inet(0x2, 0x2, 0xfc)
        		setsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f00000003c0)="1ef56ab09639c2b6d1d9f4c2673c326203c1a42261e9f1a12cb03084036dea5115c70f967ec71facea566d169319f9b65fd8360562f479c2950f", 0x3a)
        		execve(&(0x7f0000000400)='./file0\x00', &(0x7f0000000580)=[&(0x7f0000000440)='[!\'{\x00', &(0x7f0000000480)='&\x00', &(0x7f00000004c0)='\x00', &(0x7f0000000500)='\'$^({!*-\x00', &(0x7f0000000540)='\x00'], &(0x7f0000000740)=[&(0x7f00000005c0)='^\xc4)\x00', &(0x7f0000000600)='\x00', &(0x7f0000000640)='\'-#$.^!)\x00', &(0x7f0000000680)='\x00', &(0x7f00000006c0)='(\x00', &(0x7f0000000700)='\x00'])
        		syz_emit_ethernet(0x53, &(0x7f0000000000)="d23918dbd2d1c37faabeb91a927235d4cc7f49d6ae3be5ce00da87bb93a9d5ea5424dcf23c4bb143ab0434109e924384d4f0b7c12acf3ef50ce96f95eb34d1c805b3a9b6a86ac40cf703d81bed0079b28b506a")
        		syz_execute_func(&(0x7f0000000080)="c4c2e9f7fe8f49f812c2c4a1515c1d00000000f3430faed2c4219dd5c58f6800ecda82410f0189070000213664440f381c53b28f29b899b200000021c4a3ed0a7a0009")
        		syz_extract_tcp_res(&(0x7f0000000100), 0x4, 0xffff)
        		r3 = syz_usb_connect(0x50f, 0xe3, &(0x7f0000000140)="ebdec13ce69b02c56926eab47c6808aa6b569153ee220563f41c82c9ce3147e6179d474c09990125163e4b2d6ad2b3b7700777092a938aeafc009738583cd2806f7c10db7015bd2ec78f6e39e6927b062e73bb583291dfe21260e09c8e5fada51107fdf72acebff7f0d3cc555bfbeba8550bf6e463228a2cf8b259b2c21e3a962f8bc033eff9862ca8430f7a675357cafc2d77095eb2fd11c1881f698cbe022db984c8fa243940adc5f1303d6b2e3282341e30ba61f4a2142ab29749df98f4e4a6c3bb351466d733528e4f3ec44e01bb354cdc0238cf8b4a5d21a78f9726ec59562fb5", &(0x7f0000000240)="938ef0bca6cbeab42ded663d2176d01a0719404b60e83d8453f01f69368690768f05504c40e60a72f4a542ef60a21d7660c4349984fb299fdf95c005bea67f46de572e2d8026fd51a191c8c8bcdf90c308f72440d7b832234ccc0979719cf58072f3129ab79eb5179176bd1f886479a1b75db28da14b5ac111437e5939ccca7f25ee5ef658e9d942260d73f95acf3042aa91c9b452761314167e1b8bdfc363adf93868dd80598d4ad9ce4005761557ccebc3775a86ba7f9c63f65d40b24bfa167327e0007e2c53fc54ed628b4ccdadcdf0e8188afd27404349")
        		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_execve
        		#define SYS_execve 59
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lstat
        		#define SYS_lstat 441
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_setsockopt
        		#define SYS_setsockopt 105
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		
        		uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        		*(uint64_t*)0x20000040 = 0x10001;
        		*(uint64_t*)0x20000048 = 0x5fd69e51;
        		*(uint64_t*)0x20000050 = 0xfffffffffffff201;
        		*(uint64_t*)0x20000058 = 0x3969;
        				syscall(SYS_utimes, 0x20000000ul, 0x20000040ul);
        				break;
        			case 1:
        				syscall(SYS_lstat, -1ul, 0x20000080ul);
        				break;
        			case 2:
        		memcpy((void*)0x20000140, "./file0\000", 8);
        				syscall(SYS_execve, 0x20000140ul, 0ul, 0x20000180ul);
        				break;
        			case 3:
        		*(uint32_t*)0x20000200 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200001c0ul, 0x20000200ul);
        				if (res != -1)
        						r[0] = res;
        				break;
        			case 4:
        		*(uint32_t*)0x20000280 = 0x10;
        				syscall(SYS_getsockopt, r[0], 0xffff, 0x100c, 0x20000240ul, 0x20000280ul);
        				break;
        			case 5:
        		*(uint32_t*)0x20000300 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200002c0ul, 0x20000300ul);
        				if (res != -1)
        						r[1] = res;
        				break;
        			case 6:
        		*(uint32_t*)0x20000380 = 0xc;
        				syscall(SYS_getpeername, r[1], 0x20000340ul, 0x20000380ul);
        				break;
        			case 7:
        				res = syscall(SYS_socket, 2ul, 2ul, 0xfc);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 8:
        		memcpy((void*)0x200003c0, "\x1e\xf5\x6a\xb0\x96\x39\xc2\xb6\xd1\xd9\xf4\xc2\x67\x3c\x32\x62\x03\xc1\xa4\x22\x61\xe9\xf1\xa1\x2c\xb0\x30\x84\x03\x6d\xea\x51\x15\xc7\x0f\x96\x7e\xc7\x1f\xac\xea\x56\x6d\x16\x93\x19\xf9\xb6\x5f\xd8\x36\x05\x62\xf4\x79\xc2\x95\x0f", 58);
        				syscall(SYS_setsockopt, r[2], 0, 1, 0x200003c0ul, 0x3aul);
        				break;
        			case 9:
        		memcpy((void*)0x20000400, "./file0\000", 8);
        		*(uint64_t*)0x20000580 = 0x20000440;
        		memcpy((void*)0x20000440, "[!\'{\000", 5);
        		*(uint64_t*)0x20000588 = 0x20000480;
        		memcpy((void*)0x20000480, "&\000", 2);
        		*(uint64_t*)0x20000590 = 0x200004c0;
        		memcpy((void*)0x200004c0, "\000", 1);
        		*(uint64_t*)0x20000598 = 0x20000500;
        		memcpy((void*)0x20000500, "\'$^({!*-\000", 9);
        		*(uint64_t*)0x200005a0 = 0x20000540;
        		memcpy((void*)0x20000540, "\000", 1);
        		*(uint64_t*)0x20000740 = 0x200005c0;
        		memcpy((void*)0x200005c0, "^\304)\000", 4);
        		*(uint64_t*)0x20000748 = 0x20000600;
        		memcpy((void*)0x20000600, "\000", 1);
        		*(uint64_t*)0x20000750 = 0x20000640;
        		memcpy((void*)0x20000640, "\'-#$.^!)\000", 9);
        		*(uint64_t*)0x20000758 = 0x20000680;
        		memcpy((void*)0x20000680, "\000", 1);
        		*(uint64_t*)0x20000760 = 0x200006c0;
        		memcpy((void*)0x200006c0, "(\000", 2);
        		*(uint64_t*)0x20000768 = 0x20000700;
        		memcpy((void*)0x20000700, "\000", 1);
        				syscall(SYS_execve, 0x20000400ul, 0x20000580ul, 0x20000740ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xd2\x39\x18\xdb\xd2\xd1\xc3\x7f\xaa\xbe\xb9\x1a\x92\x72\x35\xd4\xcc\x7f\x49\xd6\xae\x3b\xe5\xce\x00\xda\x87\xbb\x93\xa9\xd5\xea\x54\x24\xdc\xf2\x3c\x4b\xb1\x43\xab\x04\x34\x10\x9e\x92\x43\x84\xd4\xf0\xb7\xc1\x2a\xcf\x3e\xf5\x0c\xe9\x6f\x95\xeb\x34\xd1\xc8\x05\xb3\xa9\xb6\xa8\x6a\xc4\x0c\xf7\x03\xd8\x1b\xed\x00\x79\xb2\x8b\x50\x6a", 83);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\xc2\xe9\xf7\xfe\x8f\x49\xf8\x12\xc2\xc4\xa1\x51\x5c\x1d\x00\x00\x00\x00\xf3\x43\x0f\xae\xd2\xc4\x21\x9d\xd5\xc5\x8f\x68\x00\xec\xda\x82\x41\x0f\x01\x89\x07\x00\x00\x21\x36\x64\x44\x0f\x38\x1c\x53\xb2\x8f\x29\xb8\x99\xb2\x00\x00\x00\x21\xc4\xa3\xed\x0a\x7a\x00\x09", 67);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000140, "\xeb\xde\xc1\x3c\xe6\x9b\x02\xc5\x69\x26\xea\xb4\x7c\x68\x08\xaa\x6b\x56\x91\x53\xee\x22\x05\x63\xf4\x1c\x82\xc9\xce\x31\x47\xe6\x17\x9d\x47\x4c\x09\x99\x01\x25\x16\x3e\x4b\x2d\x6a\xd2\xb3\xb7\x70\x07\x77\x09\x2a\x93\x8a\xea\xfc\x00\x97\x38\x58\x3c\xd2\x80\x6f\x7c\x10\xdb\x70\x15\xbd\x2e\xc7\x8f\x6e\x39\xe6\x92\x7b\x06\x2e\x73\xbb\x58\x32\x91\xdf\xe2\x12\x60\xe0\x9c\x8e\x5f\xad\xa5\x11\x07\xfd\xf7\x2a\xce\xbf\xf7\xf0\xd3\xcc\x55\x5b\xfb\xeb\xa8\x55\x0b\xf6\xe4\x63\x22\x8a\x2c\xf8\xb2\x59\xb2\xc2\x1e\x3a\x96\x2f\x8b\xc0\x33\xef\xf9\x86\x2c\xa8\x43\x0f\x7a\x67\x53\x57\xca\xfc\x2d\x77\x09\x5e\xb2\xfd\x11\xc1\x88\x1f\x69\x8c\xbe\x02\x2d\xb9\x84\xc8\xfa\x24\x39\x40\xad\xc5\xf1\x30\x3d\x6b\x2e\x32\x82\x34\x1e\x30\xba\x61\xf4\xa2\x14\x2a\xb2\x97\x49\xdf\x98\xf4\xe4\xa6\xc3\xbb\x35\x14\x66\xd7\x33\x52\x8e\x4f\x3e\xc4\x4e\x01\xbb\x35\x4c\xdc\x02\x38\xcf\x8b\x4a\x5d\x21\xa7\x8f\x97\x26\xec\x59\x56\x2f\xb5", 227);
        		memcpy((void*)0x20000240, "\x93\x8e\xf0\xbc\xa6\xcb\xea\xb4\x2d\xed\x66\x3d\x21\x76\xd0\x1a\x07\x19\x40\x4b\x60\xe8\x3d\x84\x53\xf0\x1f\x69\x36\x86\x90\x76\x8f\x05\x50\x4c\x40\xe6\x0a\x72\xf4\xa5\x42\xef\x60\xa2\x1d\x76\x60\xc4\x34\x99\x84\xfb\x29\x9f\xdf\x95\xc0\x05\xbe\xa6\x7f\x46\xde\x57\x2e\x2d\x80\x26\xfd\x51\xa1\x91\xc8\xc8\xbc\xdf\x90\xc3\x08\xf7\x24\x40\xd7\xb8\x32\x23\x4c\xcc\x09\x79\x71\x9c\xf5\x80\x72\xf3\x12\x9a\xb7\x9e\xb5\x17\x91\x76\xbd\x1f\x88\x64\x79\xa1\xb7\x5d\xb2\x8d\xa1\x4b\x5a\xc1\x11\x43\x7e\x59\x39\xcc\xca\x7f\x25\xee\x5e\xf6\x58\xe9\xd9\x42\x26\x0d\x73\xf9\x5a\xcf\x30\x42\xaa\x91\xc9\xb4\x52\x76\x13\x14\x16\x7e\x1b\x8b\xdf\xc3\x63\xad\xf9\x38\x68\xdd\x80\x59\x8d\x4a\xd9\xce\x40\x05\x76\x15\x57\xcc\xeb\xc3\x77\x5a\x86\xba\x7f\x9c\x63\xf6\x5d\x40\xb2\x4b\xfa\x16\x73\x27\xe0\x00\x7e\x2c\x53\xfc\x54\xed\x62\x8b\x4c\xcd\xad\xcd\xf0\xe8\x18\x8a\xfd\x27\x40\x43\x49", 217);
        				res = syz_usb_connect(0x50f, 0xe3, 0x20000140, 0x20000240);
        				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-executor175961597 -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 (0.46s)
        	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:
        		utimes(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x10001, 0x5fd69e51}, {0xfffffffffffff201, 0x3969}})
        		lstat(0xffffffffffffffff, &(0x7f0000000080))
        		execve(&(0x7f0000000140)='./file0\x00', 0x0, &(0x7f0000000180))
        		r0 = accept$inet(0xffffffffffffff9c, &(0x7f00000001c0), &(0x7f0000000200)=0xc)
        		getsockopt$sock_timeval(r0, 0xffff, 0x100c, &(0x7f0000000240), &(0x7f0000000280)=0x10)
        		r1 = accept$inet(0xffffffffffffff9c, &(0x7f00000002c0), &(0x7f0000000300)=0xc)
        		getpeername(r1, &(0x7f0000000340)=@in, &(0x7f0000000380)=0xc)
        		r2 = socket$inet(0x2, 0x2, 0xfc)
        		setsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f00000003c0)="1ef56ab09639c2b6d1d9f4c2673c326203c1a42261e9f1a12cb03084036dea5115c70f967ec71facea566d169319f9b65fd8360562f479c2950f", 0x3a)
        		execve(&(0x7f0000000400)='./file0\x00', &(0x7f0000000580)=[&(0x7f0000000440)='[!\'{\x00', &(0x7f0000000480)='&\x00', &(0x7f00000004c0)='\x00', &(0x7f0000000500)='\'$^({!*-\x00', &(0x7f0000000540)='\x00'], &(0x7f0000000740)=[&(0x7f00000005c0)='^\xc4)\x00', &(0x7f0000000600)='\x00', &(0x7f0000000640)='\'-#$.^!)\x00', &(0x7f0000000680)='\x00', &(0x7f00000006c0)='(\x00', &(0x7f0000000700)='\x00'])
        		syz_emit_ethernet(0x53, &(0x7f0000000000)="d23918dbd2d1c37faabeb91a927235d4cc7f49d6ae3be5ce00da87bb93a9d5ea5424dcf23c4bb143ab0434109e924384d4f0b7c12acf3ef50ce96f95eb34d1c805b3a9b6a86ac40cf703d81bed0079b28b506a")
        		syz_execute_func(&(0x7f0000000080)="c4c2e9f7fe8f49f812c2c4a1515c1d00000000f3430faed2c4219dd5c58f6800ecda82410f0189070000213664440f381c53b28f29b899b200000021c4a3ed0a7a0009")
        		syz_extract_tcp_res(&(0x7f0000000100), 0x4, 0xffff)
        		r3 = syz_usb_connect(0x50f, 0xe3, &(0x7f0000000140)="ebdec13ce69b02c56926eab47c6808aa6b569153ee220563f41c82c9ce3147e6179d474c09990125163e4b2d6ad2b3b7700777092a938aeafc009738583cd2806f7c10db7015bd2ec78f6e39e6927b062e73bb583291dfe21260e09c8e5fada51107fdf72acebff7f0d3cc555bfbeba8550bf6e463228a2cf8b259b2c21e3a962f8bc033eff9862ca8430f7a675357cafc2d77095eb2fd11c1881f698cbe022db984c8fa243940adc5f1303d6b2e3282341e30ba61f4a2142ab29749df98f4e4a6c3bb351466d733528e4f3ec44e01bb354cdc0238cf8b4a5d21a78f9726ec59562fb5", &(0x7f0000000240)="938ef0bca6cbeab42ded663d2176d01a0719404b60e83d8453f01f69368690768f05504c40e60a72f4a542ef60a21d7660c4349984fb299fdf95c005bea67f46de572e2d8026fd51a191c8c8bcdf90c308f72440d7b832234ccc0979719cf58072f3129ab79eb5179176bd1f886479a1b75db28da14b5ac111437e5939ccca7f25ee5ef658e9d942260d73f95acf3042aa91c9b452761314167e1b8bdfc363adf93868dd80598d4ad9ce4005761557ccebc3775a86ba7f9c63f65d40b24bfa167327e0007e2c53fc54ed628b4ccdadcdf0e8188afd27404349")
        		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_execve
        		#define SYS_execve 59
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lstat
        		#define SYS_lstat 441
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_setsockopt
        		#define SYS_setsockopt 105
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		
        		uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_one(void)
        		{
        				intptr_t res = 0;
        		memcpy((void*)0x20000000, "./file0\000", 8);
        		*(uint64_t*)0x20000040 = 0x10001;
        		*(uint64_t*)0x20000048 = 0x5fd69e51;
        		*(uint64_t*)0x20000050 = 0xfffffffffffff201;
        		*(uint64_t*)0x20000058 = 0x3969;
        			syscall(SYS_utimes, 0x20000000ul, 0x20000040ul);
        			syscall(SYS_lstat, -1ul, 0x20000080ul);
        		memcpy((void*)0x20000140, "./file0\000", 8);
        			syscall(SYS_execve, 0x20000140ul, 0ul, 0x20000180ul);
        		*(uint32_t*)0x20000200 = 0xc;
        			res = syscall(SYS_accept, 0xffffff9c, 0x200001c0ul, 0x20000200ul);
        			if (res != -1)
        				r[0] = res;
        		*(uint32_t*)0x20000280 = 0x10;
        			syscall(SYS_getsockopt, r[0], 0xffff, 0x100c, 0x20000240ul, 0x20000280ul);
        		*(uint32_t*)0x20000300 = 0xc;
        			res = syscall(SYS_accept, 0xffffff9c, 0x200002c0ul, 0x20000300ul);
        			if (res != -1)
        				r[1] = res;
        		*(uint32_t*)0x20000380 = 0xc;
        			syscall(SYS_getpeername, r[1], 0x20000340ul, 0x20000380ul);
        			res = syscall(SYS_socket, 2ul, 2ul, 0xfc);
        			if (res != -1)
        				r[2] = res;
        		memcpy((void*)0x200003c0, "\x1e\xf5\x6a\xb0\x96\x39\xc2\xb6\xd1\xd9\xf4\xc2\x67\x3c\x32\x62\x03\xc1\xa4\x22\x61\xe9\xf1\xa1\x2c\xb0\x30\x84\x03\x6d\xea\x51\x15\xc7\x0f\x96\x7e\xc7\x1f\xac\xea\x56\x6d\x16\x93\x19\xf9\xb6\x5f\xd8\x36\x05\x62\xf4\x79\xc2\x95\x0f", 58);
        			syscall(SYS_setsockopt, r[2], 0, 1, 0x200003c0ul, 0x3aul);
        		memcpy((void*)0x20000400, "./file0\000", 8);
        		*(uint64_t*)0x20000580 = 0x20000440;
        		memcpy((void*)0x20000440, "[!\'{\000", 5);
        		*(uint64_t*)0x20000588 = 0x20000480;
        		memcpy((void*)0x20000480, "&\000", 2);
        		*(uint64_t*)0x20000590 = 0x200004c0;
        		memcpy((void*)0x200004c0, "\000", 1);
        		*(uint64_t*)0x20000598 = 0x20000500;
        		memcpy((void*)0x20000500, "\'$^({!*-\000", 9);
        		*(uint64_t*)0x200005a0 = 0x20000540;
        		memcpy((void*)0x20000540, "\000", 1);
        		*(uint64_t*)0x20000740 = 0x200005c0;
        		memcpy((void*)0x200005c0, "^\304)\000", 4);
        		*(uint64_t*)0x20000748 = 0x20000600;
        		memcpy((void*)0x20000600, "\000", 1);
        		*(uint64_t*)0x20000750 = 0x20000640;
        		memcpy((void*)0x20000640, "\'-#$.^!)\000", 9);
        		*(uint64_t*)0x20000758 = 0x20000680;
        		memcpy((void*)0x20000680, "\000", 1);
        		*(uint64_t*)0x20000760 = 0x200006c0;
        		memcpy((void*)0x200006c0, "(\000", 2);
        		*(uint64_t*)0x20000768 = 0x20000700;
        		memcpy((void*)0x20000700, "\000", 1);
        			syscall(SYS_execve, 0x20000400ul, 0x20000580ul, 0x20000740ul);
        		memcpy((void*)0x20000000, "\xd2\x39\x18\xdb\xd2\xd1\xc3\x7f\xaa\xbe\xb9\x1a\x92\x72\x35\xd4\xcc\x7f\x49\xd6\xae\x3b\xe5\xce\x00\xda\x87\xbb\x93\xa9\xd5\xea\x54\x24\xdc\xf2\x3c\x4b\xb1\x43\xab\x04\x34\x10\x9e\x92\x43\x84\xd4\xf0\xb7\xc1\x2a\xcf\x3e\xf5\x0c\xe9\x6f\x95\xeb\x34\xd1\xc8\x05\xb3\xa9\xb6\xa8\x6a\xc4\x0c\xf7\x03\xd8\x1b\xed\x00\x79\xb2\x8b\x50\x6a", 83);
        		memcpy((void*)0x20000080, "\xc4\xc2\xe9\xf7\xfe\x8f\x49\xf8\x12\xc2\xc4\xa1\x51\x5c\x1d\x00\x00\x00\x00\xf3\x43\x0f\xae\xd2\xc4\x21\x9d\xd5\xc5\x8f\x68\x00\xec\xda\x82\x41\x0f\x01\x89\x07\x00\x00\x21\x36\x64\x44\x0f\x38\x1c\x53\xb2\x8f\x29\xb8\x99\xb2\x00\x00\x00\x21\xc4\xa3\xed\x0a\x7a\x00\x09", 67);
        			syz_execute_func(0x20000080);
        		memcpy((void*)0x20000140, "\xeb\xde\xc1\x3c\xe6\x9b\x02\xc5\x69\x26\xea\xb4\x7c\x68\x08\xaa\x6b\x56\x91\x53\xee\x22\x05\x63\xf4\x1c\x82\xc9\xce\x31\x47\xe6\x17\x9d\x47\x4c\x09\x99\x01\x25\x16\x3e\x4b\x2d\x6a\xd2\xb3\xb7\x70\x07\x77\x09\x2a\x93\x8a\xea\xfc\x00\x97\x38\x58\x3c\xd2\x80\x6f\x7c\x10\xdb\x70\x15\xbd\x2e\xc7\x8f\x6e\x39\xe6\x92\x7b\x06\x2e\x73\xbb\x58\x32\x91\xdf\xe2\x12\x60\xe0\x9c\x8e\x5f\xad\xa5\x11\x07\xfd\xf7\x2a\xce\xbf\xf7\xf0\xd3\xcc\x55\x5b\xfb\xeb\xa8\x55\x0b\xf6\xe4\x63\x22\x8a\x2c\xf8\xb2\x59\xb2\xc2\x1e\x3a\x96\x2f\x8b\xc0\x33\xef\xf9\x86\x2c\xa8\x43\x0f\x7a\x67\x53\x57\xca\xfc\x2d\x77\x09\x5e\xb2\xfd\x11\xc1\x88\x1f\x69\x8c\xbe\x02\x2d\xb9\x84\xc8\xfa\x24\x39\x40\xad\xc5\xf1\x30\x3d\x6b\x2e\x32\x82\x34\x1e\x30\xba\x61\xf4\xa2\x14\x2a\xb2\x97\x49\xdf\x98\xf4\xe4\xa6\xc3\xbb\x35\x14\x66\xd7\x33\x52\x8e\x4f\x3e\xc4\x4e\x01\xbb\x35\x4c\xdc\x02\x38\xcf\x8b\x4a\x5d\x21\xa7\x8f\x97\x26\xec\x59\x56\x2f\xb5", 227);
        		memcpy((void*)0x20000240, "\x93\x8e\xf0\xbc\xa6\xcb\xea\xb4\x2d\xed\x66\x3d\x21\x76\xd0\x1a\x07\x19\x40\x4b\x60\xe8\x3d\x84\x53\xf0\x1f\x69\x36\x86\x90\x76\x8f\x05\x50\x4c\x40\xe6\x0a\x72\xf4\xa5\x42\xef\x60\xa2\x1d\x76\x60\xc4\x34\x99\x84\xfb\x29\x9f\xdf\x95\xc0\x05\xbe\xa6\x7f\x46\xde\x57\x2e\x2d\x80\x26\xfd\x51\xa1\x91\xc8\xc8\xbc\xdf\x90\xc3\x08\xf7\x24\x40\xd7\xb8\x32\x23\x4c\xcc\x09\x79\x71\x9c\xf5\x80\x72\xf3\x12\x9a\xb7\x9e\xb5\x17\x91\x76\xbd\x1f\x88\x64\x79\xa1\xb7\x5d\xb2\x8d\xa1\x4b\x5a\xc1\x11\x43\x7e\x59\x39\xcc\xca\x7f\x25\xee\x5e\xf6\x58\xe9\xd9\x42\x26\x0d\x73\xf9\x5a\xcf\x30\x42\xaa\x91\xc9\xb4\x52\x76\x13\x14\x16\x7e\x1b\x8b\xdf\xc3\x63\xad\xf9\x38\x68\xdd\x80\x59\x8d\x4a\xd9\xce\x40\x05\x76\x15\x57\xcc\xeb\xc3\x77\x5a\x86\xba\x7f\x9c\x63\xf6\x5d\x40\xb2\x4b\xfa\x16\x73\x27\xe0\x00\x7e\x2c\x53\xfc\x54\xed\x62\x8b\x4c\xcd\xad\xcd\xf0\xe8\x18\x8a\xfd\x27\x40\x43\x49", 217);
        			res = syz_usb_connect(0x50f, 0xe3, 0x20000140, 0x20000240);
        			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-executor907840595 -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 (0.29s)
        	csource_test.go:121: 
        --- FAIL: TestGenerate/netbsd/amd64/11 (0.29s)
        	csource_test.go:121: 
        --- FAIL: TestGenerate/netbsd/amd64/13 (0.37s)
        	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:
        		utimes(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x10001, 0x5fd69e51}, {0xfffffffffffff201, 0x3969}})
        		lstat(0xffffffffffffffff, &(0x7f0000000080))
        		execve(&(0x7f0000000140)='./file0\x00', 0x0, &(0x7f0000000180))
        		r0 = accept$inet(0xffffffffffffff9c, &(0x7f00000001c0), &(0x7f0000000200)=0xc)
        		getsockopt$sock_timeval(r0, 0xffff, 0x100c, &(0x7f0000000240), &(0x7f0000000280)=0x10)
        		r1 = accept$inet(0xffffffffffffff9c, &(0x7f00000002c0), &(0x7f0000000300)=0xc)
        		getpeername(r1, &(0x7f0000000340)=@in, &(0x7f0000000380)=0xc)
        		r2 = socket$inet(0x2, 0x2, 0xfc)
        		setsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f00000003c0)="1ef56ab09639c2b6d1d9f4c2673c326203c1a42261e9f1a12cb03084036dea5115c70f967ec71facea566d169319f9b65fd8360562f479c2950f", 0x3a)
        		execve(&(0x7f0000000400)='./file0\x00', &(0x7f0000000580)=[&(0x7f0000000440)='[!\'{\x00', &(0x7f0000000480)='&\x00', &(0x7f00000004c0)='\x00', &(0x7f0000000500)='\'$^({!*-\x00', &(0x7f0000000540)='\x00'], &(0x7f0000000740)=[&(0x7f00000005c0)='^\xc4)\x00', &(0x7f0000000600)='\x00', &(0x7f0000000640)='\'-#$.^!)\x00', &(0x7f0000000680)='\x00', &(0x7f00000006c0)='(\x00', &(0x7f0000000700)='\x00'])
        		syz_emit_ethernet(0x53, &(0x7f0000000000)="d23918dbd2d1c37faabeb91a927235d4cc7f49d6ae3be5ce00da87bb93a9d5ea5424dcf23c4bb143ab0434109e924384d4f0b7c12acf3ef50ce96f95eb34d1c805b3a9b6a86ac40cf703d81bed0079b28b506a")
        		syz_execute_func(&(0x7f0000000080)="c4c2e9f7fe8f49f812c2c4a1515c1d00000000f3430faed2c4219dd5c58f6800ecda82410f0189070000213664440f381c53b28f29b899b200000021c4a3ed0a7a0009")
        		syz_extract_tcp_res(&(0x7f0000000100), 0x4, 0xffff)
        		r3 = syz_usb_connect(0x50f, 0xe3, &(0x7f0000000140)="ebdec13ce69b02c56926eab47c6808aa6b569153ee220563f41c82c9ce3147e6179d474c09990125163e4b2d6ad2b3b7700777092a938aeafc009738583cd2806f7c10db7015bd2ec78f6e39e6927b062e73bb583291dfe21260e09c8e5fada51107fdf72acebff7f0d3cc555bfbeba8550bf6e463228a2cf8b259b2c21e3a962f8bc033eff9862ca8430f7a675357cafc2d77095eb2fd11c1881f698cbe022db984c8fa243940adc5f1303d6b2e3282341e30ba61f4a2142ab29749df98f4e4a6c3bb351466d733528e4f3ec44e01bb354cdc0238cf8b4a5d21a78f9726ec59562fb5", &(0x7f0000000240)="938ef0bca6cbeab42ded663d2176d01a0719404b60e83d8453f01f69368690768f05504c40e60a72f4a542ef60a21d7660c4349984fb299fdf95c005bea67f46de572e2d8026fd51a191c8c8bcdf90c308f72440d7b832234ccc0979719cf58072f3129ab79eb5179176bd1f886479a1b75db28da14b5ac111437e5939ccca7f25ee5ef658e9d942260d73f95acf3042aa91c9b452761314167e1b8bdfc363adf93868dd80598d4ad9ce4005761557ccebc3775a86ba7f9c63f65d40b24bfa167327e0007e2c53fc54ed628b4ccdadcdf0e8188afd27404349")
        		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_execve
        		#define SYS_execve 59
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lstat
        		#define SYS_lstat 441
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_setsockopt
        		#define SYS_setsockopt 105
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		
        		uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        		*(uint64_t*)0x20000040 = 0x10001;
        		*(uint64_t*)0x20000048 = 0x5fd69e51;
        		*(uint64_t*)0x20000050 = 0xfffffffffffff201;
        		*(uint64_t*)0x20000058 = 0x3969;
        				res = syscall(SYS_utimes, 0x20000000ul, 0x20000040ul);
        				fprintf(stderr, "### call=0 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 1:
        				res = syscall(SYS_lstat, -1ul, 0x20000080ul);
        				fprintf(stderr, "### call=1 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 2:
        		memcpy((void*)0x20000140, "./file0\000", 8);
        				res = syscall(SYS_execve, 0x20000140ul, 0ul, 0x20000180ul);
        				fprintf(stderr, "### call=2 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 3:
        		*(uint32_t*)0x20000200 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200001c0ul, 0x20000200ul);
        				fprintf(stderr, "### call=3 errno=%u\n", res == -1 ? errno : 0);
        				if (res != -1)
        						r[0] = res;
        				break;
        			case 4:
        		*(uint32_t*)0x20000280 = 0x10;
        				res = syscall(SYS_getsockopt, r[0], 0xffff, 0x100c, 0x20000240ul, 0x20000280ul);
        				fprintf(stderr, "### call=4 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 5:
        		*(uint32_t*)0x20000300 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200002c0ul, 0x20000300ul);
        				fprintf(stderr, "### call=5 errno=%u\n", res == -1 ? errno : 0);
        				if (res != -1)
        						r[1] = res;
        				break;
        			case 6:
        		*(uint32_t*)0x20000380 = 0xc;
        				res = syscall(SYS_getpeername, r[1], 0x20000340ul, 0x20000380ul);
        				fprintf(stderr, "### call=6 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 7:
        				res = syscall(SYS_socket, 2ul, 2ul, 0xfc);
        				fprintf(stderr, "### call=7 errno=%u\n", res == -1 ? errno : 0);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 8:
        		memcpy((void*)0x200003c0, "\x1e\xf5\x6a\xb0\x96\x39\xc2\xb6\xd1\xd9\xf4\xc2\x67\x3c\x32\x62\x03\xc1\xa4\x22\x61\xe9\xf1\xa1\x2c\xb0\x30\x84\x03\x6d\xea\x51\x15\xc7\x0f\x96\x7e\xc7\x1f\xac\xea\x56\x6d\x16\x93\x19\xf9\xb6\x5f\xd8\x36\x05\x62\xf4\x79\xc2\x95\x0f", 58);
        				res = syscall(SYS_setsockopt, r[2], 0, 1, 0x200003c0ul, 0x3aul);
        				fprintf(stderr, "### call=8 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 9:
        		memcpy((void*)0x20000400, "./file0\000", 8);
        		*(uint64_t*)0x20000580 = 0x20000440;
        		memcpy((void*)0x20000440, "[!\'{\000", 5);
        		*(uint64_t*)0x20000588 = 0x20000480;
        		memcpy((void*)0x20000480, "&\000", 2);
        		*(uint64_t*)0x20000590 = 0x200004c0;
        		memcpy((void*)0x200004c0, "\000", 1);
        		*(uint64_t*)0x20000598 = 0x20000500;
        		memcpy((void*)0x20000500, "\'$^({!*-\000", 9);
        		*(uint64_t*)0x200005a0 = 0x20000540;
        		memcpy((void*)0x20000540, "\000", 1);
        		*(uint64_t*)0x20000740 = 0x200005c0;
        		memcpy((void*)0x200005c0, "^\304)\000", 4);
        		*(uint64_t*)0x20000748 = 0x20000600;
        		memcpy((void*)0x20000600, "\000", 1);
        		*(uint64_t*)0x20000750 = 0x20000640;
        		memcpy((void*)0x20000640, "\'-#$.^!)\000", 9);
        		*(uint64_t*)0x20000758 = 0x20000680;
        		memcpy((void*)0x20000680, "\000", 1);
        		*(uint64_t*)0x20000760 = 0x200006c0;
        		memcpy((void*)0x200006c0, "(\000", 2);
        		*(uint64_t*)0x20000768 = 0x20000700;
        		memcpy((void*)0x20000700, "\000", 1);
        				res = syscall(SYS_execve, 0x20000400ul, 0x20000580ul, 0x20000740ul);
        				fprintf(stderr, "### call=9 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xd2\x39\x18\xdb\xd2\xd1\xc3\x7f\xaa\xbe\xb9\x1a\x92\x72\x35\xd4\xcc\x7f\x49\xd6\xae\x3b\xe5\xce\x00\xda\x87\xbb\x93\xa9\xd5\xea\x54\x24\xdc\xf2\x3c\x4b\xb1\x43\xab\x04\x34\x10\x9e\x92\x43\x84\xd4\xf0\xb7\xc1\x2a\xcf\x3e\xf5\x0c\xe9\x6f\x95\xeb\x34\xd1\xc8\x05\xb3\xa9\xb6\xa8\x6a\xc4\x0c\xf7\x03\xd8\x1b\xed\x00\x79\xb2\x8b\x50\x6a", 83);
        				(void)res;
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\xc2\xe9\xf7\xfe\x8f\x49\xf8\x12\xc2\xc4\xa1\x51\x5c\x1d\x00\x00\x00\x00\xf3\x43\x0f\xae\xd2\xc4\x21\x9d\xd5\xc5\x8f\x68\x00\xec\xda\x82\x41\x0f\x01\x89\x07\x00\x00\x21\x36\x64\x44\x0f\x38\x1c\x53\xb2\x8f\x29\xb8\x99\xb2\x00\x00\x00\x21\xc4\xa3\xed\x0a\x7a\x00\x09", 67);
        				res = syz_execute_func(0x20000080);
        				fprintf(stderr, "### call=11 errno=%u\n", res == -1 ? errno : 0);
        				break;
        			case 12:
        				(void)res;
        				break;
        			case 13:
        		memcpy((void*)0x20000140, "\xeb\xde\xc1\x3c\xe6\x9b\x02\xc5\x69\x26\xea\xb4\x7c\x68\x08\xaa\x6b\x56\x91\x53\xee\x22\x05\x63\xf4\x1c\x82\xc9\xce\x31\x47\xe6\x17\x9d\x47\x4c\x09\x99\x01\x25\x16\x3e\x4b\x2d\x6a\xd2\xb3\xb7\x70\x07\x77\x09\x2a\x93\x8a\xea\xfc\x00\x97\x38\x58\x3c\xd2\x80\x6f\x7c\x10\xdb\x70\x15\xbd\x2e\xc7\x8f\x6e\x39\xe6\x92\x7b\x06\x2e\x73\xbb\x58\x32\x91\xdf\xe2\x12\x60\xe0\x9c\x8e\x5f\xad\xa5\x11\x07\xfd\xf7\x2a\xce\xbf\xf7\xf0\xd3\xcc\x55\x5b\xfb\xeb\xa8\x55\x0b\xf6\xe4\x63\x22\x8a\x2c\xf8\xb2\x59\xb2\xc2\x1e\x3a\x96\x2f\x8b\xc0\x33\xef\xf9\x86\x2c\xa8\x43\x0f\x7a\x67\x53\x57\xca\xfc\x2d\x77\x09\x5e\xb2\xfd\x11\xc1\x88\x1f\x69\x8c\xbe\x02\x2d\xb9\x84\xc8\xfa\x24\x39\x40\xad\xc5\xf1\x30\x3d\x6b\x2e\x32\x82\x34\x1e\x30\xba\x61\xf4\xa2\x14\x2a\xb2\x97\x49\xdf\x98\xf4\xe4\xa6\xc3\xbb\x35\x14\x66\xd7\x33\x52\x8e\x4f\x3e\xc4\x4e\x01\xbb\x35\x4c\xdc\x02\x38\xcf\x8b\x4a\x5d\x21\xa7\x8f\x97\x26\xec\x59\x56\x2f\xb5", 227);
        		memcpy((void*)0x20000240, "\x93\x8e\xf0\xbc\xa6\xcb\xea\xb4\x2d\xed\x66\x3d\x21\x76\xd0\x1a\x07\x19\x40\x4b\x60\xe8\x3d\x84\x53\xf0\x1f\x69\x36\x86\x90\x76\x8f\x05\x50\x4c\x40\xe6\x0a\x72\xf4\xa5\x42\xef\x60\xa2\x1d\x76\x60\xc4\x34\x99\x84\xfb\x29\x9f\xdf\x95\xc0\x05\xbe\xa6\x7f\x46\xde\x57\x2e\x2d\x80\x26\xfd\x51\xa1\x91\xc8\xc8\xbc\xdf\x90\xc3\x08\xf7\x24\x40\xd7\xb8\x32\x23\x4c\xcc\x09\x79\x71\x9c\xf5\x80\x72\xf3\x12\x9a\xb7\x9e\xb5\x17\x91\x76\xbd\x1f\x88\x64\x79\xa1\xb7\x5d\xb2\x8d\xa1\x4b\x5a\xc1\x11\x43\x7e\x59\x39\xcc\xca\x7f\x25\xee\x5e\xf6\x58\xe9\xd9\x42\x26\x0d\x73\xf9\x5a\xcf\x30\x42\xaa\x91\xc9\xb4\x52\x76\x13\x14\x16\x7e\x1b\x8b\xdf\xc3\x63\xad\xf9\x38\x68\xdd\x80\x59\x8d\x4a\xd9\xce\x40\x05\x76\x15\x57\xcc\xeb\xc3\x77\x5a\x86\xba\x7f\x9c\x63\xf6\x5d\x40\xb2\x4b\xfa\x16\x73\x27\xe0\x00\x7e\x2c\x53\xfc\x54\xed\x62\x8b\x4c\xcd\xad\xcd\xf0\xe8\x18\x8a\xfd\x27\x40\x43\x49", 217);
        				res = syz_usb_connect(0x50f, 0xe3, 0x20000140, 0x20000240);
        				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-executor109667969 -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 (0.29s)
        	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:
        		utimes(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x10001, 0x5fd69e51}, {0xfffffffffffff201, 0x3969}})
        		lstat(0xffffffffffffffff, &(0x7f0000000080))
        		execve(&(0x7f0000000140)='./file0\x00', 0x0, &(0x7f0000000180))
        		r0 = accept$inet(0xffffffffffffff9c, &(0x7f00000001c0), &(0x7f0000000200)=0xc)
        		getsockopt$sock_timeval(r0, 0xffff, 0x100c, &(0x7f0000000240), &(0x7f0000000280)=0x10)
        		r1 = accept$inet(0xffffffffffffff9c, &(0x7f00000002c0), &(0x7f0000000300)=0xc)
        		getpeername(r1, &(0x7f0000000340)=@in, &(0x7f0000000380)=0xc)
        		r2 = socket$inet(0x2, 0x2, 0xfc)
        		setsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f00000003c0)="1ef56ab09639c2b6d1d9f4c2673c326203c1a42261e9f1a12cb03084036dea5115c70f967ec71facea566d169319f9b65fd8360562f479c2950f", 0x3a)
        		execve(&(0x7f0000000400)='./file0\x00', &(0x7f0000000580)=[&(0x7f0000000440)='[!\'{\x00', &(0x7f0000000480)='&\x00', &(0x7f00000004c0)='\x00', &(0x7f0000000500)='\'$^({!*-\x00', &(0x7f0000000540)='\x00'], &(0x7f0000000740)=[&(0x7f00000005c0)='^\xc4)\x00', &(0x7f0000000600)='\x00', &(0x7f0000000640)='\'-#$.^!)\x00', &(0x7f0000000680)='\x00', &(0x7f00000006c0)='(\x00', &(0x7f0000000700)='\x00'])
        		syz_emit_ethernet(0x53, &(0x7f0000000000)="d23918dbd2d1c37faabeb91a927235d4cc7f49d6ae3be5ce00da87bb93a9d5ea5424dcf23c4bb143ab0434109e924384d4f0b7c12acf3ef50ce96f95eb34d1c805b3a9b6a86ac40cf703d81bed0079b28b506a")
        		syz_execute_func(&(0x7f0000000080)="c4c2e9f7fe8f49f812c2c4a1515c1d00000000f3430faed2c4219dd5c58f6800ecda82410f0189070000213664440f381c53b28f29b899b200000021c4a3ed0a7a0009")
        		syz_extract_tcp_res(&(0x7f0000000100), 0x4, 0xffff)
        		r3 = syz_usb_connect(0x50f, 0xe3, &(0x7f0000000140)="ebdec13ce69b02c56926eab47c6808aa6b569153ee220563f41c82c9ce3147e6179d474c09990125163e4b2d6ad2b3b7700777092a938aeafc009738583cd2806f7c10db7015bd2ec78f6e39e6927b062e73bb583291dfe21260e09c8e5fada51107fdf72acebff7f0d3cc555bfbeba8550bf6e463228a2cf8b259b2c21e3a962f8bc033eff9862ca8430f7a675357cafc2d77095eb2fd11c1881f698cbe022db984c8fa243940adc5f1303d6b2e3282341e30ba61f4a2142ab29749df98f4e4a6c3bb351466d733528e4f3ec44e01bb354cdc0238cf8b4a5d21a78f9726ec59562fb5", &(0x7f0000000240)="938ef0bca6cbeab42ded663d2176d01a0719404b60e83d8453f01f69368690768f05504c40e60a72f4a542ef60a21d7660c4349984fb299fdf95c005bea67f46de572e2d8026fd51a191c8c8bcdf90c308f72440d7b832234ccc0979719cf58072f3129ab79eb5179176bd1f886479a1b75db28da14b5ac111437e5939ccca7f25ee5ef658e9d942260d73f95acf3042aa91c9b452761314167e1b8bdfc363adf93868dd80598d4ad9ce4005761557ccebc3775a86ba7f9c63f65d40b24bfa167327e0007e2c53fc54ed628b4ccdadcdf0e8188afd27404349")
        		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_execve
        		#define SYS_execve 59
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lstat
        		#define SYS_lstat 441
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_setsockopt
        		#define SYS_setsockopt 105
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		
        		uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        		*(uint64_t*)0x20000040 = 0x10001;
        		*(uint64_t*)0x20000048 = 0x5fd69e51;
        		*(uint64_t*)0x20000050 = 0xfffffffffffff201;
        		*(uint64_t*)0x20000058 = 0x3969;
        				syscall(SYS_utimes, 0x20000000ul, 0x20000040ul);
        				break;
        			case 1:
        				syscall(SYS_lstat, -1ul, 0x20000080ul);
        				break;
        			case 2:
        		memcpy((void*)0x20000140, "./file0\000", 8);
        				syscall(SYS_execve, 0x20000140ul, 0ul, 0x20000180ul);
        				break;
        			case 3:
        		*(uint32_t*)0x20000200 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200001c0ul, 0x20000200ul);
        				if (res != -1)
        						r[0] = res;
        				break;
        			case 4:
        		*(uint32_t*)0x20000280 = 0x10;
        				syscall(SYS_getsockopt, r[0], 0xffff, 0x100c, 0x20000240ul, 0x20000280ul);
        				break;
        			case 5:
        		*(uint32_t*)0x20000300 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200002c0ul, 0x20000300ul);
        				if (res != -1)
        						r[1] = res;
        				break;
        			case 6:
        		*(uint32_t*)0x20000380 = 0xc;
        				syscall(SYS_getpeername, r[1], 0x20000340ul, 0x20000380ul);
        				break;
        			case 7:
        				res = syscall(SYS_socket, 2ul, 2ul, 0xfc);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 8:
        		memcpy((void*)0x200003c0, "\x1e\xf5\x6a\xb0\x96\x39\xc2\xb6\xd1\xd9\xf4\xc2\x67\x3c\x32\x62\x03\xc1\xa4\x22\x61\xe9\xf1\xa1\x2c\xb0\x30\x84\x03\x6d\xea\x51\x15\xc7\x0f\x96\x7e\xc7\x1f\xac\xea\x56\x6d\x16\x93\x19\xf9\xb6\x5f\xd8\x36\x05\x62\xf4\x79\xc2\x95\x0f", 58);
        				syscall(SYS_setsockopt, r[2], 0, 1, 0x200003c0ul, 0x3aul);
        				break;
        			case 9:
        		memcpy((void*)0x20000400, "./file0\000", 8);
        		*(uint64_t*)0x20000580 = 0x20000440;
        		memcpy((void*)0x20000440, "[!\'{\000", 5);
        		*(uint64_t*)0x20000588 = 0x20000480;
        		memcpy((void*)0x20000480, "&\000", 2);
        		*(uint64_t*)0x20000590 = 0x200004c0;
        		memcpy((void*)0x200004c0, "\000", 1);
        		*(uint64_t*)0x20000598 = 0x20000500;
        		memcpy((void*)0x20000500, "\'$^({!*-\000", 9);
        		*(uint64_t*)0x200005a0 = 0x20000540;
        		memcpy((void*)0x20000540, "\000", 1);
        		*(uint64_t*)0x20000740 = 0x200005c0;
        		memcpy((void*)0x200005c0, "^\304)\000", 4);
        		*(uint64_t*)0x20000748 = 0x20000600;
        		memcpy((void*)0x20000600, "\000", 1);
        		*(uint64_t*)0x20000750 = 0x20000640;
        		memcpy((void*)0x20000640, "\'-#$.^!)\000", 9);
        		*(uint64_t*)0x20000758 = 0x20000680;
        		memcpy((void*)0x20000680, "\000", 1);
        		*(uint64_t*)0x20000760 = 0x200006c0;
        		memcpy((void*)0x200006c0, "(\000", 2);
        		*(uint64_t*)0x20000768 = 0x20000700;
        		memcpy((void*)0x20000700, "\000", 1);
        				syscall(SYS_execve, 0x20000400ul, 0x20000580ul, 0x20000740ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xd2\x39\x18\xdb\xd2\xd1\xc3\x7f\xaa\xbe\xb9\x1a\x92\x72\x35\xd4\xcc\x7f\x49\xd6\xae\x3b\xe5\xce\x00\xda\x87\xbb\x93\xa9\xd5\xea\x54\x24\xdc\xf2\x3c\x4b\xb1\x43\xab\x04\x34\x10\x9e\x92\x43\x84\xd4\xf0\xb7\xc1\x2a\xcf\x3e\xf5\x0c\xe9\x6f\x95\xeb\x34\xd1\xc8\x05\xb3\xa9\xb6\xa8\x6a\xc4\x0c\xf7\x03\xd8\x1b\xed\x00\x79\xb2\x8b\x50\x6a", 83);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\xc2\xe9\xf7\xfe\x8f\x49\xf8\x12\xc2\xc4\xa1\x51\x5c\x1d\x00\x00\x00\x00\xf3\x43\x0f\xae\xd2\xc4\x21\x9d\xd5\xc5\x8f\x68\x00\xec\xda\x82\x41\x0f\x01\x89\x07\x00\x00\x21\x36\x64\x44\x0f\x38\x1c\x53\xb2\x8f\x29\xb8\x99\xb2\x00\x00\x00\x21\xc4\xa3\xed\x0a\x7a\x00\x09", 67);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000140, "\xeb\xde\xc1\x3c\xe6\x9b\x02\xc5\x69\x26\xea\xb4\x7c\x68\x08\xaa\x6b\x56\x91\x53\xee\x22\x05\x63\xf4\x1c\x82\xc9\xce\x31\x47\xe6\x17\x9d\x47\x4c\x09\x99\x01\x25\x16\x3e\x4b\x2d\x6a\xd2\xb3\xb7\x70\x07\x77\x09\x2a\x93\x8a\xea\xfc\x00\x97\x38\x58\x3c\xd2\x80\x6f\x7c\x10\xdb\x70\x15\xbd\x2e\xc7\x8f\x6e\x39\xe6\x92\x7b\x06\x2e\x73\xbb\x58\x32\x91\xdf\xe2\x12\x60\xe0\x9c\x8e\x5f\xad\xa5\x11\x07\xfd\xf7\x2a\xce\xbf\xf7\xf0\xd3\xcc\x55\x5b\xfb\xeb\xa8\x55\x0b\xf6\xe4\x63\x22\x8a\x2c\xf8\xb2\x59\xb2\xc2\x1e\x3a\x96\x2f\x8b\xc0\x33\xef\xf9\x86\x2c\xa8\x43\x0f\x7a\x67\x53\x57\xca\xfc\x2d\x77\x09\x5e\xb2\xfd\x11\xc1\x88\x1f\x69\x8c\xbe\x02\x2d\xb9\x84\xc8\xfa\x24\x39\x40\xad\xc5\xf1\x30\x3d\x6b\x2e\x32\x82\x34\x1e\x30\xba\x61\xf4\xa2\x14\x2a\xb2\x97\x49\xdf\x98\xf4\xe4\xa6\xc3\xbb\x35\x14\x66\xd7\x33\x52\x8e\x4f\x3e\xc4\x4e\x01\xbb\x35\x4c\xdc\x02\x38\xcf\x8b\x4a\x5d\x21\xa7\x8f\x97\x26\xec\x59\x56\x2f\xb5", 227);
        		memcpy((void*)0x20000240, "\x93\x8e\xf0\xbc\xa6\xcb\xea\xb4\x2d\xed\x66\x3d\x21\x76\xd0\x1a\x07\x19\x40\x4b\x60\xe8\x3d\x84\x53\xf0\x1f\x69\x36\x86\x90\x76\x8f\x05\x50\x4c\x40\xe6\x0a\x72\xf4\xa5\x42\xef\x60\xa2\x1d\x76\x60\xc4\x34\x99\x84\xfb\x29\x9f\xdf\x95\xc0\x05\xbe\xa6\x7f\x46\xde\x57\x2e\x2d\x80\x26\xfd\x51\xa1\x91\xc8\xc8\xbc\xdf\x90\xc3\x08\xf7\x24\x40\xd7\xb8\x32\x23\x4c\xcc\x09\x79\x71\x9c\xf5\x80\x72\xf3\x12\x9a\xb7\x9e\xb5\x17\x91\x76\xbd\x1f\x88\x64\x79\xa1\xb7\x5d\xb2\x8d\xa1\x4b\x5a\xc1\x11\x43\x7e\x59\x39\xcc\xca\x7f\x25\xee\x5e\xf6\x58\xe9\xd9\x42\x26\x0d\x73\xf9\x5a\xcf\x30\x42\xaa\x91\xc9\xb4\x52\x76\x13\x14\x16\x7e\x1b\x8b\xdf\xc3\x63\xad\xf9\x38\x68\xdd\x80\x59\x8d\x4a\xd9\xce\x40\x05\x76\x15\x57\xcc\xeb\xc3\x77\x5a\x86\xba\x7f\x9c\x63\xf6\x5d\x40\xb2\x4b\xfa\x16\x73\x27\xe0\x00\x7e\x2c\x53\xfc\x54\xed\x62\x8b\x4c\xcd\xad\xcd\xf0\xe8\x18\x8a\xfd\x27\x40\x43\x49", 217);
        				res = syz_usb_connect(0x50f, 0xe3, 0x20000140, 0x20000240);
        				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-executor602113847 -DGOOS_netbsd=1 -DGOARCH_amd64=1 -DHOSTGOOS_linux=1 -x c - -m64 --sysroot /syzkaller/netbsd/src/../dest/ -O2 -pthread -Wall -Werror -Wparentheses -Wframe-larger-than=16384]
        --- FAIL: TestGenerate/netbsd/amd64/5 (0.37s)
        	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:
        		utimes(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x10001, 0x5fd69e51}, {0xfffffffffffff201, 0x3969}})
        		lstat(0xffffffffffffffff, &(0x7f0000000080))
        		execve(&(0x7f0000000140)='./file0\x00', 0x0, &(0x7f0000000180))
        		r0 = accept$inet(0xffffffffffffff9c, &(0x7f00000001c0), &(0x7f0000000200)=0xc)
        		getsockopt$sock_timeval(r0, 0xffff, 0x100c, &(0x7f0000000240), &(0x7f0000000280)=0x10)
        		r1 = accept$inet(0xffffffffffffff9c, &(0x7f00000002c0), &(0x7f0000000300)=0xc)
        		getpeername(r1, &(0x7f0000000340)=@in, &(0x7f0000000380)=0xc)
        		r2 = socket$inet(0x2, 0x2, 0xfc)
        		setsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f00000003c0)="1ef56ab09639c2b6d1d9f4c2673c326203c1a42261e9f1a12cb03084036dea5115c70f967ec71facea566d169319f9b65fd8360562f479c2950f", 0x3a)
        		execve(&(0x7f0000000400)='./file0\x00', &(0x7f0000000580)=[&(0x7f0000000440)='[!\'{\x00', &(0x7f0000000480)='&\x00', &(0x7f00000004c0)='\x00', &(0x7f0000000500)='\'$^({!*-\x00', &(0x7f0000000540)='\x00'], &(0x7f0000000740)=[&(0x7f00000005c0)='^\xc4)\x00', &(0x7f0000000600)='\x00', &(0x7f0000000640)='\'-#$.^!)\x00', &(0x7f0000000680)='\x00', &(0x7f00000006c0)='(\x00', &(0x7f0000000700)='\x00'])
        		syz_emit_ethernet(0x53, &(0x7f0000000000)="d23918dbd2d1c37faabeb91a927235d4cc7f49d6ae3be5ce00da87bb93a9d5ea5424dcf23c4bb143ab0434109e924384d4f0b7c12acf3ef50ce96f95eb34d1c805b3a9b6a86ac40cf703d81bed0079b28b506a")
        		syz_execute_func(&(0x7f0000000080)="c4c2e9f7fe8f49f812c2c4a1515c1d00000000f3430faed2c4219dd5c58f6800ecda82410f0189070000213664440f381c53b28f29b899b200000021c4a3ed0a7a0009")
        		syz_extract_tcp_res(&(0x7f0000000100), 0x4, 0xffff)
        		r3 = syz_usb_connect(0x50f, 0xe3, &(0x7f0000000140)="ebdec13ce69b02c56926eab47c6808aa6b569153ee220563f41c82c9ce3147e6179d474c09990125163e4b2d6ad2b3b7700777092a938aeafc009738583cd2806f7c10db7015bd2ec78f6e39e6927b062e73bb583291dfe21260e09c8e5fada51107fdf72acebff7f0d3cc555bfbeba8550bf6e463228a2cf8b259b2c21e3a962f8bc033eff9862ca8430f7a675357cafc2d77095eb2fd11c1881f698cbe022db984c8fa243940adc5f1303d6b2e3282341e30ba61f4a2142ab29749df98f4e4a6c3bb351466d733528e4f3ec44e01bb354cdc0238cf8b4a5d21a78f9726ec59562fb5", &(0x7f0000000240)="938ef0bca6cbeab42ded663d2176d01a0719404b60e83d8453f01f69368690768f05504c40e60a72f4a542ef60a21d7660c4349984fb299fdf95c005bea67f46de572e2d8026fd51a191c8c8bcdf90c308f72440d7b832234ccc0979719cf58072f3129ab79eb5179176bd1f886479a1b75db28da14b5ac111437e5939ccca7f25ee5ef658e9d942260d73f95acf3042aa91c9b452761314167e1b8bdfc363adf93868dd80598d4ad9ce4005761557ccebc3775a86ba7f9c63f65d40b24bfa167327e0007e2c53fc54ed628b4ccdadcdf0e8188afd27404349")
        		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_execve
        		#define SYS_execve 59
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lstat
        		#define SYS_lstat 441
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_setsockopt
        		#define SYS_setsockopt 105
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		
        		uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        		*(uint64_t*)0x20000040 = 0x10001;
        		*(uint64_t*)0x20000048 = 0x5fd69e51;
        		*(uint64_t*)0x20000050 = 0xfffffffffffff201;
        		*(uint64_t*)0x20000058 = 0x3969;
        				syscall(SYS_utimes, 0x20000000ul, 0x20000040ul);
        				break;
        			case 1:
        				syscall(SYS_lstat, -1ul, 0x20000080ul);
        				break;
        			case 2:
        		memcpy((void*)0x20000140, "./file0\000", 8);
        				syscall(SYS_execve, 0x20000140ul, 0ul, 0x20000180ul);
        				break;
        			case 3:
        		*(uint32_t*)0x20000200 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200001c0ul, 0x20000200ul);
        				if (res != -1)
        						r[0] = res;
        				break;
        			case 4:
        		*(uint32_t*)0x20000280 = 0x10;
        				syscall(SYS_getsockopt, r[0], 0xffff, 0x100c, 0x20000240ul, 0x20000280ul);
        				break;
        			case 5:
        		*(uint32_t*)0x20000300 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200002c0ul, 0x20000300ul);
        				if (res != -1)
        						r[1] = res;
        				break;
        			case 6:
        		*(uint32_t*)0x20000380 = 0xc;
        				syscall(SYS_getpeername, r[1], 0x20000340ul, 0x20000380ul);
        				break;
        			case 7:
        				res = syscall(SYS_socket, 2ul, 2ul, 0xfc);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 8:
        		memcpy((void*)0x200003c0, "\x1e\xf5\x6a\xb0\x96\x39\xc2\xb6\xd1\xd9\xf4\xc2\x67\x3c\x32\x62\x03\xc1\xa4\x22\x61\xe9\xf1\xa1\x2c\xb0\x30\x84\x03\x6d\xea\x51\x15\xc7\x0f\x96\x7e\xc7\x1f\xac\xea\x56\x6d\x16\x93\x19\xf9\xb6\x5f\xd8\x36\x05\x62\xf4\x79\xc2\x95\x0f", 58);
        				syscall(SYS_setsockopt, r[2], 0, 1, 0x200003c0ul, 0x3aul);
        				break;
        			case 9:
        		memcpy((void*)0x20000400, "./file0\000", 8);
        		*(uint64_t*)0x20000580 = 0x20000440;
        		memcpy((void*)0x20000440, "[!\'{\000", 5);
        		*(uint64_t*)0x20000588 = 0x20000480;
        		memcpy((void*)0x20000480, "&\000", 2);
        		*(uint64_t*)0x20000590 = 0x200004c0;
        		memcpy((void*)0x200004c0, "\000", 1);
        		*(uint64_t*)0x20000598 = 0x20000500;
        		memcpy((void*)0x20000500, "\'$^({!*-\000", 9);
        		*(uint64_t*)0x200005a0 = 0x20000540;
        		memcpy((void*)0x20000540, "\000", 1);
        		*(uint64_t*)0x20000740 = 0x200005c0;
        		memcpy((void*)0x200005c0, "^\304)\000", 4);
        		*(uint64_t*)0x20000748 = 0x20000600;
        		memcpy((void*)0x20000600, "\000", 1);
        		*(uint64_t*)0x20000750 = 0x20000640;
        		memcpy((void*)0x20000640, "\'-#$.^!)\000", 9);
        		*(uint64_t*)0x20000758 = 0x20000680;
        		memcpy((void*)0x20000680, "\000", 1);
        		*(uint64_t*)0x20000760 = 0x200006c0;
        		memcpy((void*)0x200006c0, "(\000", 2);
        		*(uint64_t*)0x20000768 = 0x20000700;
        		memcpy((void*)0x20000700, "\000", 1);
        				syscall(SYS_execve, 0x20000400ul, 0x20000580ul, 0x20000740ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xd2\x39\x18\xdb\xd2\xd1\xc3\x7f\xaa\xbe\xb9\x1a\x92\x72\x35\xd4\xcc\x7f\x49\xd6\xae\x3b\xe5\xce\x00\xda\x87\xbb\x93\xa9\xd5\xea\x54\x24\xdc\xf2\x3c\x4b\xb1\x43\xab\x04\x34\x10\x9e\x92\x43\x84\xd4\xf0\xb7\xc1\x2a\xcf\x3e\xf5\x0c\xe9\x6f\x95\xeb\x34\xd1\xc8\x05\xb3\xa9\xb6\xa8\x6a\xc4\x0c\xf7\x03\xd8\x1b\xed\x00\x79\xb2\x8b\x50\x6a", 83);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\xc2\xe9\xf7\xfe\x8f\x49\xf8\x12\xc2\xc4\xa1\x51\x5c\x1d\x00\x00\x00\x00\xf3\x43\x0f\xae\xd2\xc4\x21\x9d\xd5\xc5\x8f\x68\x00\xec\xda\x82\x41\x0f\x01\x89\x07\x00\x00\x21\x36\x64\x44\x0f\x38\x1c\x53\xb2\x8f\x29\xb8\x99\xb2\x00\x00\x00\x21\xc4\xa3\xed\x0a\x7a\x00\x09", 67);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000140, "\xeb\xde\xc1\x3c\xe6\x9b\x02\xc5\x69\x26\xea\xb4\x7c\x68\x08\xaa\x6b\x56\x91\x53\xee\x22\x05\x63\xf4\x1c\x82\xc9\xce\x31\x47\xe6\x17\x9d\x47\x4c\x09\x99\x01\x25\x16\x3e\x4b\x2d\x6a\xd2\xb3\xb7\x70\x07\x77\x09\x2a\x93\x8a\xea\xfc\x00\x97\x38\x58\x3c\xd2\x80\x6f\x7c\x10\xdb\x70\x15\xbd\x2e\xc7\x8f\x6e\x39\xe6\x92\x7b\x06\x2e\x73\xbb\x58\x32\x91\xdf\xe2\x12\x60\xe0\x9c\x8e\x5f\xad\xa5\x11\x07\xfd\xf7\x2a\xce\xbf\xf7\xf0\xd3\xcc\x55\x5b\xfb\xeb\xa8\x55\x0b\xf6\xe4\x63\x22\x8a\x2c\xf8\xb2\x59\xb2\xc2\x1e\x3a\x96\x2f\x8b\xc0\x33\xef\xf9\x86\x2c\xa8\x43\x0f\x7a\x67\x53\x57\xca\xfc\x2d\x77\x09\x5e\xb2\xfd\x11\xc1\x88\x1f\x69\x8c\xbe\x02\x2d\xb9\x84\xc8\xfa\x24\x39\x40\xad\xc5\xf1\x30\x3d\x6b\x2e\x32\x82\x34\x1e\x30\xba\x61\xf4\xa2\x14\x2a\xb2\x97\x49\xdf\x98\xf4\xe4\xa6\xc3\xbb\x35\x14\x66\xd7\x33\x52\x8e\x4f\x3e\xc4\x4e\x01\xbb\x35\x4c\xdc\x02\x38\xcf\x8b\x4a\x5d\x21\xa7\x8f\x97\x26\xec\x59\x56\x2f\xb5", 227);
        		memcpy((void*)0x20000240, "\x93\x8e\xf0\xbc\xa6\xcb\xea\xb4\x2d\xed\x66\x3d\x21\x76\xd0\x1a\x07\x19\x40\x4b\x60\xe8\x3d\x84\x53\xf0\x1f\x69\x36\x86\x90\x76\x8f\x05\x50\x4c\x40\xe6\x0a\x72\xf4\xa5\x42\xef\x60\xa2\x1d\x76\x60\xc4\x34\x99\x84\xfb\x29\x9f\xdf\x95\xc0\x05\xbe\xa6\x7f\x46\xde\x57\x2e\x2d\x80\x26\xfd\x51\xa1\x91\xc8\xc8\xbc\xdf\x90\xc3\x08\xf7\x24\x40\xd7\xb8\x32\x23\x4c\xcc\x09\x79\x71\x9c\xf5\x80\x72\xf3\x12\x9a\xb7\x9e\xb5\x17\x91\x76\xbd\x1f\x88\x64\x79\xa1\xb7\x5d\xb2\x8d\xa1\x4b\x5a\xc1\x11\x43\x7e\x59\x39\xcc\xca\x7f\x25\xee\x5e\xf6\x58\xe9\xd9\x42\x26\x0d\x73\xf9\x5a\xcf\x30\x42\xaa\x91\xc9\xb4\x52\x76\x13\x14\x16\x7e\x1b\x8b\xdf\xc3\x63\xad\xf9\x38\x68\xdd\x80\x59\x8d\x4a\xd9\xce\x40\x05\x76\x15\x57\xcc\xeb\xc3\x77\x5a\x86\xba\x7f\x9c\x63\xf6\x5d\x40\xb2\x4b\xfa\x16\x73\x27\xe0\x00\x7e\x2c\x53\xfc\x54\xed\x62\x8b\x4c\xcd\xad\xcd\xf0\xe8\x18\x8a\xfd\x27\x40\x43\x49", 217);
        				res = syz_usb_connect(0x50f, 0xe3, 0x20000140, 0x20000240);
        				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-executor635079259 -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 (0.29s)
        	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:
        		utimes(&(0x7f0000000000)='./file0\x00', &(0x7f0000000040)={{0x10001, 0x5fd69e51}, {0xfffffffffffff201, 0x3969}})
        		lstat(0xffffffffffffffff, &(0x7f0000000080))
        		execve(&(0x7f0000000140)='./file0\x00', 0x0, &(0x7f0000000180))
        		r0 = accept$inet(0xffffffffffffff9c, &(0x7f00000001c0), &(0x7f0000000200)=0xc)
        		getsockopt$sock_timeval(r0, 0xffff, 0x100c, &(0x7f0000000240), &(0x7f0000000280)=0x10)
        		r1 = accept$inet(0xffffffffffffff9c, &(0x7f00000002c0), &(0x7f0000000300)=0xc)
        		getpeername(r1, &(0x7f0000000340)=@in, &(0x7f0000000380)=0xc)
        		r2 = socket$inet(0x2, 0x2, 0xfc)
        		setsockopt$inet_opts(r2, 0x0, 0x1, &(0x7f00000003c0)="1ef56ab09639c2b6d1d9f4c2673c326203c1a42261e9f1a12cb03084036dea5115c70f967ec71facea566d169319f9b65fd8360562f479c2950f", 0x3a)
        		execve(&(0x7f0000000400)='./file0\x00', &(0x7f0000000580)=[&(0x7f0000000440)='[!\'{\x00', &(0x7f0000000480)='&\x00', &(0x7f00000004c0)='\x00', &(0x7f0000000500)='\'$^({!*-\x00', &(0x7f0000000540)='\x00'], &(0x7f0000000740)=[&(0x7f00000005c0)='^\xc4)\x00', &(0x7f0000000600)='\x00', &(0x7f0000000640)='\'-#$.^!)\x00', &(0x7f0000000680)='\x00', &(0x7f00000006c0)='(\x00', &(0x7f0000000700)='\x00'])
        		syz_emit_ethernet(0x53, &(0x7f0000000000)="d23918dbd2d1c37faabeb91a927235d4cc7f49d6ae3be5ce00da87bb93a9d5ea5424dcf23c4bb143ab0434109e924384d4f0b7c12acf3ef50ce96f95eb34d1c805b3a9b6a86ac40cf703d81bed0079b28b506a")
        		syz_execute_func(&(0x7f0000000080)="c4c2e9f7fe8f49f812c2c4a1515c1d00000000f3430faed2c4219dd5c58f6800ecda82410f0189070000213664440f381c53b28f29b899b200000021c4a3ed0a7a0009")
        		syz_extract_tcp_res(&(0x7f0000000100), 0x4, 0xffff)
        		r3 = syz_usb_connect(0x50f, 0xe3, &(0x7f0000000140)="ebdec13ce69b02c56926eab47c6808aa6b569153ee220563f41c82c9ce3147e6179d474c09990125163e4b2d6ad2b3b7700777092a938aeafc009738583cd2806f7c10db7015bd2ec78f6e39e6927b062e73bb583291dfe21260e09c8e5fada51107fdf72acebff7f0d3cc555bfbeba8550bf6e463228a2cf8b259b2c21e3a962f8bc033eff9862ca8430f7a675357cafc2d77095eb2fd11c1881f698cbe022db984c8fa243940adc5f1303d6b2e3282341e30ba61f4a2142ab29749df98f4e4a6c3bb351466d733528e4f3ec44e01bb354cdc0238cf8b4a5d21a78f9726ec59562fb5", &(0x7f0000000240)="938ef0bca6cbeab42ded663d2176d01a0719404b60e83d8453f01f69368690768f05504c40e60a72f4a542ef60a21d7660c4349984fb299fdf95c005bea67f46de572e2d8026fd51a191c8c8bcdf90c308f72440d7b832234ccc0979719cf58072f3129ab79eb5179176bd1f886479a1b75db28da14b5ac111437e5939ccca7f25ee5ef658e9d942260d73f95acf3042aa91c9b452761314167e1b8bdfc363adf93868dd80598d4ad9ce4005761557ccebc3775a86ba7f9c63f65d40b24bfa167327e0007e2c53fc54ed628b4ccdadcdf0e8188afd27404349")
        		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_execve
        		#define SYS_execve 59
        		#endif
        		#ifndef SYS_getpeername
        		#define SYS_getpeername 31
        		#endif
        		#ifndef SYS_getsockopt
        		#define SYS_getsockopt 118
        		#endif
        		#ifndef SYS_lstat
        		#define SYS_lstat 441
        		#endif
        		#ifndef SYS_mmap
        		#define SYS_mmap 197
        		#endif
        		#ifndef SYS_setsockopt
        		#define SYS_setsockopt 105
        		#endif
        		#ifndef SYS_socket
        		#define SYS_socket 394
        		#endif
        		#ifndef SYS_utimes
        		#define SYS_utimes 420
        		#endif
        		
        		uint64_t r[4] = {0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff, 0xffffffffffffffff};
        		
        		void execute_call(int call)
        		{
        				intptr_t res = 0;
        			switch (call) {
        			case 0:
        		memcpy((void*)0x20000000, "./file0\000", 8);
        		*(uint64_t*)0x20000040 = 0x10001;
        		*(uint64_t*)0x20000048 = 0x5fd69e51;
        		*(uint64_t*)0x20000050 = 0xfffffffffffff201;
        		*(uint64_t*)0x20000058 = 0x3969;
        				syscall(SYS_utimes, 0x20000000ul, 0x20000040ul);
        				break;
        			case 1:
        				syscall(SYS_lstat, -1ul, 0x20000080ul);
        				break;
        			case 2:
        		memcpy((void*)0x20000140, "./file0\000", 8);
        				syscall(SYS_execve, 0x20000140ul, 0ul, 0x20000180ul);
        				break;
        			case 3:
        		*(uint32_t*)0x20000200 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200001c0ul, 0x20000200ul);
        				if (res != -1)
        						r[0] = res;
        				break;
        			case 4:
        		*(uint32_t*)0x20000280 = 0x10;
        				syscall(SYS_getsockopt, r[0], 0xffff, 0x100c, 0x20000240ul, 0x20000280ul);
        				break;
        			case 5:
        		*(uint32_t*)0x20000300 = 0xc;
        				res = syscall(SYS_accept, 0xffffff9c, 0x200002c0ul, 0x20000300ul);
        				if (res != -1)
        						r[1] = res;
        				break;
        			case 6:
        		*(uint32_t*)0x20000380 = 0xc;
        				syscall(SYS_getpeername, r[1], 0x20000340ul, 0x20000380ul);
        				break;
        			case 7:
        				res = syscall(SYS_socket, 2ul, 2ul, 0xfc);
        				if (res != -1)
        						r[2] = res;
        				break;
        			case 8:
        		memcpy((void*)0x200003c0, "\x1e\xf5\x6a\xb0\x96\x39\xc2\xb6\xd1\xd9\xf4\xc2\x67\x3c\x32\x62\x03\xc1\xa4\x22\x61\xe9\xf1\xa1\x2c\xb0\x30\x84\x03\x6d\xea\x51\x15\xc7\x0f\x96\x7e\xc7\x1f\xac\xea\x56\x6d\x16\x93\x19\xf9\xb6\x5f\xd8\x36\x05\x62\xf4\x79\xc2\x95\x0f", 58);
        				syscall(SYS_setsockopt, r[2], 0, 1, 0x200003c0ul, 0x3aul);
        				break;
        			case 9:
        		memcpy((void*)0x20000400, "./file0\000", 8);
        		*(uint64_t*)0x20000580 = 0x20000440;
        		memcpy((void*)0x20000440, "[!\'{\000", 5);
        		*(uint64_t*)0x20000588 = 0x20000480;
        		memcpy((void*)0x20000480, "&\000", 2);
        		*(uint64_t*)0x20000590 = 0x200004c0;
        		memcpy((void*)0x200004c0, "\000", 1);
        		*(uint64_t*)0x20000598 = 0x20000500;
        		memcpy((void*)0x20000500, "\'$^({!*-\000", 9);
        		*(uint64_t*)0x200005a0 = 0x20000540;
        		memcpy((void*)0x20000540, "\000", 1);
        		*(uint64_t*)0x20000740 = 0x200005c0;
        		memcpy((void*)0x200005c0, "^\304)\000", 4);
        		*(uint64_t*)0x20000748 = 0x20000600;
        		memcpy((void*)0x20000600, "\000", 1);
        		*(uint64_t*)0x20000750 = 0x20000640;
        		memcpy((void*)0x20000640, "\'-#$.^!)\000", 9);
        		*(uint64_t*)0x20000758 = 0x20000680;
        		memcpy((void*)0x20000680, "\000", 1);
        		*(uint64_t*)0x20000760 = 0x200006c0;
        		memcpy((void*)0x200006c0, "(\000", 2);
        		*(uint64_t*)0x20000768 = 0x20000700;
        		memcpy((void*)0x20000700, "\000", 1);
        				syscall(SYS_execve, 0x20000400ul, 0x20000580ul, 0x20000740ul);
        				break;
        			case 10:
        		memcpy((void*)0x20000000, "\xd2\x39\x18\xdb\xd2\xd1\xc3\x7f\xaa\xbe\xb9\x1a\x92\x72\x35\xd4\xcc\x7f\x49\xd6\xae\x3b\xe5\xce\x00\xda\x87\xbb\x93\xa9\xd5\xea\x54\x24\xdc\xf2\x3c\x4b\xb1\x43\xab\x04\x34\x10\x9e\x92\x43\x84\xd4\xf0\xb7\xc1\x2a\xcf\x3e\xf5\x0c\xe9\x6f\x95\xeb\x34\xd1\xc8\x05\xb3\xa9\xb6\xa8\x6a\xc4\x0c\xf7\x03\xd8\x1b\xed\x00\x79\xb2\x8b\x50\x6a", 83);
        				break;
        			case 11:
        		memcpy((void*)0x20000080, "\xc4\xc2\xe9\xf7\xfe\x8f\x49\xf8\x12\xc2\xc4\xa1\x51\x5c\x1d\x00\x00\x00\x00\xf3\x43\x0f\xae\xd2\xc4\x21\x9d\xd5\xc5\x8f\x68\x00\xec\xda\x82\x41\x0f\x01\x89\x07\x00\x00\x21\x36\x64\x44\x0f\x38\x1c\x53\xb2\x8f\x29\xb8\x99\xb2\x00\x00\x00\x21\xc4\xa3\xed\x0a\x7a\x00\x09", 67);
        				syz_execute_func(0x20000080);
        				break;
        			case 12:
        				break;
        			case 13:
        		memcpy((void*)0x20000140, "\xeb\xde\xc1\x3c\xe6\x9b\x02\xc5\x69\x26\xea\xb4\x7c\x68\x08\xaa\x6b\x56\x91\x53\xee\x22\x05\x63\xf4\x1c\x82\xc9\xce\x31\x47\xe6\x17\x9d\x47\x4c\x09\x99\x01\x25\x16\x3e\x4b\x2d\x6a\xd2\xb3\xb7\x70\x07\x77\x09\x2a\x93\x8a\xea\xfc\x00\x97\x38\x58\x3c\xd2\x80\x6f\x7c\x10\xdb\x70\x15\xbd\x2e\xc7\x8f\x6e\x39\xe6\x92\x7b\x06\x2e\x73\xbb\x58\x32\x91\xdf\xe2\x12\x60\xe0\x9c\x8e\x5f\xad\xa5\x11\x07\xfd\xf7\x2a\xce\xbf\xf7\xf0\xd3\xcc\x55\x5b\xfb\xeb\xa8\x55\x0b\xf6\xe4\x63\x22\x8a\x2c\xf8\xb2\x59\xb2\xc2\x1e\x3a\x96\x2f\x8b\xc0\x33\xef\xf9\x86\x2c\xa8\x43\x0f\x7a\x67\x53\x57\xca\xfc\x2d\x77\x09\x5e\xb2\xfd\x11\xc1\x88\x1f\x69\x8c\xbe\x02\x2d\xb9\x84\xc8\xfa\x24\x39\x40\xad\xc5\xf1\x30\x3d\x6b\x2e\x32\x82\x34\x1e\x30\xba\x61\xf4\xa2\x14\x2a\xb2\x97\x49\xdf\x98\xf4\xe4\xa6\xc3\xbb\x35\x14\x66\xd7\x33\x52\x8e\x4f\x3e\xc4\x4e\x01\xbb\x35\x4c\xdc\x02\x38\xcf\x8b\x4a\x5d\x21\xa7\x8f\x97\x26\xec\x59\x56\x2f\xb5", 227);
        		memcpy((void*)0x20000240, "\x93\x8e\xf0\xbc\xa6\xcb\xea\xb4\x2d\xed\x66\x3d\x21\x76\xd0\x1a\x07\x19\x40\x4b\x60\xe8\x3d\x84\x53\xf0\x1f\x69\x36\x86\x90\x76\x8f\x05\x50\x4c\x40\xe6\x0a\x72\xf4\xa5\x42\xef\x60\xa2\x1d\x76\x60\xc4\x34\x99\x84\xfb\x29\x9f\xdf\x95\xc0\x05\xbe\xa6\x7f\x46\xde\x57\x2e\x2d\x80\x26\xfd\x51\xa1\x91\xc8\xc8\xbc\xdf\x90\xc3\x08\xf7\x24\x40\xd7\xb8\x32\x23\x4c\xcc\x09\x79\x71\x9c\xf5\x80\x72\xf3\x12\x9a\xb7\x9e\xb5\x17\x91\x76\xbd\x1f\x88\x64\x79\xa1\xb7\x5d\xb2\x8d\xa1\x4b\x5a\xc1\x11\x43\x7e\x59\x39\xcc\xca\x7f\x25\xee\x5e\xf6\x58\xe9\xd9\x42\x26\x0d\x73\xf9\x5a\xcf\x30\x42\xaa\x91\xc9\xb4\x52\x76\x13\x14\x16\x7e\x1b\x8b\xdf\xc3\x63\xad\xf9\x38\x68\xdd\x80\x59\x8d\x4a\xd9\xce\x40\x05\x76\x15\x57\xcc\xeb\xc3\x77\x5a\x86\xba\x7f\x9c\x63\xf6\x5d\x40\xb2\x4b\xfa\x16\x73\x27\xe0\x00\x7e\x2c\x53\xfc\x54\xed\x62\x8b\x4c\xcd\xad\xcd\xf0\xe8\x18\x8a\xfd\x27\x40\x43\x49", 217);
        				res = syz_usb_connect(0x50f, 0xe3, 0x20000140, 0x20000240);
        				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-executor224489964 -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 (0.35s)
        	csource_test.go:121: 
        --- FAIL: TestGenerate/netbsd/amd64/9 (0.36s)
        	csource_test.go:121: 
        --- FAIL: TestGenerate/netbsd/amd64/1 (0.38s)
        	csource_test.go:121: 
FAIL
FAIL	github.com/google/syzkaller/pkg/csource	4.784s
ok  	github.com/google/syzkaller/pkg/db	(cached)
ok  	github.com/google/syzkaller/pkg/email	(cached)
?   	github.com/google/syzkaller/pkg/gce	[no test files]
?   	github.com/google/syzkaller/pkg/gcs	[no test files]
?   	github.com/google/syzkaller/pkg/hash	[no test files]
ok  	github.com/google/syzkaller/pkg/host	9.554s
?   	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	1.093s
ok  	github.com/google/syzkaller/pkg/ipc	6.530s
?   	github.com/google/syzkaller/pkg/ipc/ipcconfig	[no test files]
ok  	github.com/google/syzkaller/pkg/kd	(cached)
ok  	github.com/google/syzkaller/pkg/log	(cached)
ok  	github.com/google/syzkaller/pkg/mgrconfig	(cached)
ok  	github.com/google/syzkaller/pkg/osutil	(cached)
ok  	github.com/google/syzkaller/pkg/report	(cached)
ok  	github.com/google/syzkaller/pkg/repro	(cached)
?   	github.com/google/syzkaller/pkg/rpctype	[no test files]
ok  	github.com/google/syzkaller/pkg/runtest	11.318s
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	1.626s
ok  	github.com/google/syzkaller/prog	(cached)
ok  	github.com/google/syzkaller/prog/test	(cached)
?   	github.com/google/syzkaller/sys	[no test files]
?   	github.com/google/syzkaller/sys/akaros	[no test files]
?   	github.com/google/syzkaller/sys/akaros/gen	[no test files]
?   	github.com/google/syzkaller/sys/freebsd	[no test files]
?   	github.com/google/syzkaller/sys/freebsd/gen	[no test files]
?   	github.com/google/syzkaller/sys/fuchsia	[no test files]
?   	github.com/google/syzkaller/sys/fuchsia/fidlgen	[no test files]
?   	github.com/google/syzkaller/sys/fuchsia/gen	[no test files]
?   	github.com/google/syzkaller/sys/fuchsia/layout	[no test files]
ok  	github.com/google/syzkaller/sys/linux	(cached)
?   	github.com/google/syzkaller/sys/linux/gen	[no test files]
?   	github.com/google/syzkaller/sys/netbsd	[no test files]
?   	github.com/google/syzkaller/sys/netbsd/gen	[no test files]
ok  	github.com/google/syzkaller/sys/openbsd	(cached)
?   	github.com/google/syzkaller/sys/openbsd/gen	[no test files]
?   	github.com/google/syzkaller/sys/syz-extract	[no test files]
?   	github.com/google/syzkaller/sys/syz-sysgen	[no test files]
?   	github.com/google/syzkaller/sys/targets	[no test files]
?   	github.com/google/syzkaller/sys/test	[no test files]
?   	github.com/google/syzkaller/sys/test/gen	[no test files]
?   	github.com/google/syzkaller/sys/trusty	[no test files]
?   	github.com/google/syzkaller/sys/trusty/gen	[no test files]
?   	github.com/google/syzkaller/sys/windows	[no test files]
?   	github.com/google/syzkaller/sys/windows/gen	[no test files]
ok  	github.com/google/syzkaller/syz-ci	(cached)
ok  	github.com/google/syzkaller/syz-fuzzer	(cached)
ok  	github.com/google/syzkaller/syz-hub	(cached)
ok  	github.com/google/syzkaller/syz-hub/state	(cached)
?   	github.com/google/syzkaller/syz-manager	[no test files]
?   	github.com/google/syzkaller/tools/syz-benchcmp	[no test files]
?   	github.com/google/syzkaller/tools/syz-bisect	[no test files]
?   	github.com/google/syzkaller/tools/syz-check	[no test files]
?   	github.com/google/syzkaller/tools/syz-cover	[no test files]
?   	github.com/google/syzkaller/tools/syz-crush	[no test files]
?   	github.com/google/syzkaller/tools/syz-db	[no test files]
?   	github.com/google/syzkaller/tools/syz-execprog	[no test files]
?   	github.com/google/syzkaller/tools/syz-expand	[no test files]
?   	github.com/google/syzkaller/tools/syz-fmt	[no test files]
?   	github.com/google/syzkaller/tools/syz-imagegen	[no test files]
?   	github.com/google/syzkaller/tools/syz-make	[no test files]
?   	github.com/google/syzkaller/tools/syz-mutate	[no test files]
?   	github.com/google/syzkaller/tools/syz-prog2c	[no test files]
?   	github.com/google/syzkaller/tools/syz-repro	[no test files]
?   	github.com/google/syzkaller/tools/syz-reprolist	[no test files]
?   	github.com/google/syzkaller/tools/syz-runtest	[no test files]
?   	github.com/google/syzkaller/tools/syz-showprio	[no test files]
?   	github.com/google/syzkaller/tools/syz-stress	[no test files]
?   	github.com/google/syzkaller/tools/syz-symbolize	[no test files]
?   	github.com/google/syzkaller/tools/syz-testbuild	[no test files]
?   	github.com/google/syzkaller/tools/syz-trace2syz	[no test files]
ok  	github.com/google/syzkaller/tools/syz-trace2syz/parser	(cached)
ok  	github.com/google/syzkaller/tools/syz-trace2syz/proggen	(cached)
?   	github.com/google/syzkaller/tools/syz-tty	[no test files]
?   	github.com/google/syzkaller/tools/syz-upgrade	[no test files]
?   	github.com/google/syzkaller/tools/syz-usbgen	[no test files]
ok  	github.com/google/syzkaller/vm	(cached)
?   	github.com/google/syzkaller/vm/adb	[no test files]
?   	github.com/google/syzkaller/vm/bhyve	[no test files]
?   	github.com/google/syzkaller/vm/gce	[no test files]
?   	github.com/google/syzkaller/vm/gvisor	[no test files]
ok  	github.com/google/syzkaller/vm/isolated	(cached)
?   	github.com/google/syzkaller/vm/kvm	[no test files]
?   	github.com/google/syzkaller/vm/odroid	[no test files]
?   	github.com/google/syzkaller/vm/qemu	[no test files]
ok  	github.com/google/syzkaller/vm/vmimpl	(cached)
?   	github.com/google/syzkaller/vm/vmm	[no test files]