// https://syzkaller.appspot.com/bug?id=cf29cd2bb4bede62c515d01cf2d0f04ffda95001 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include 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 bool write_file(const char* file, const char* what, ...) { char buf[1024]; va_list args; va_start(args, what); vsnprintf(buf, sizeof(buf), what, args); va_end(args); buf[sizeof(buf) - 1] = 0; int len = strlen(buf); int fd = open(file, O_WRONLY | O_CLOEXEC); if (fd == -1) return false; if (write(fd, buf, len) != len) { int err = errno; close(fd); errno = err; return false; } close(fd); return true; } #define MAX_FDS 30 #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 struct usb_device_index* lookup_usb_index(int fd) { for (int 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; } 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; if (!parse_usb_descriptor(dev, dev_len, &usb_devices[i].index)) return NULL; __atomic_store_n(&usb_devices[i].fd, fd, __ATOMIC_RELEASE); return &usb_devices[i].index; } 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, struct usb_qualifier_descriptor* qual, 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) { 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_data = (char*)qual; *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; } #define UDC_NAME_LENGTH_MAX 128 struct usb_raw_init { __u8 driver_name[UDC_NAME_LENGTH_MAX]; __u8 device_name[UDC_NAME_LENGTH_MAX]; __u8 speed; }; enum usb_raw_event_type { USB_RAW_EVENT_INVALID = 0, USB_RAW_EVENT_CONNECT = 1, USB_RAW_EVENT_CONTROL = 2, }; struct usb_raw_event { __u32 type; __u32 length; __u8 data[0]; }; struct usb_raw_ep_io { __u16 ep; __u16 flags; __u32 length; __u8 data[0]; }; #define USB_RAW_EPS_NUM_MAX 30 #define USB_RAW_EP_NAME_MAX 16 #define USB_RAW_EP_ADDR_ANY 0xff struct usb_raw_ep_caps { __u32 type_control : 1; __u32 type_iso : 1; __u32 type_bulk : 1; __u32 type_int : 1; __u32 dir_in : 1; __u32 dir_out : 1; }; struct usb_raw_ep_limits { __u16 maxpacket_limit; __u16 max_streams; __u32 reserved; }; struct usb_raw_ep_info { __u8 name[USB_RAW_EP_NAME_MAX]; __u32 addr; struct usb_raw_ep_caps caps; struct usb_raw_ep_limits limits; }; struct usb_raw_eps_info { struct usb_raw_ep_info eps[USB_RAW_EPS_NUM_MAX]; }; #define USB_RAW_IOCTL_INIT _IOW('U', 0, struct usb_raw_init) #define USB_RAW_IOCTL_RUN _IO('U', 1) #define USB_RAW_IOCTL_EVENT_FETCH _IOR('U', 2, struct usb_raw_event) #define USB_RAW_IOCTL_EP0_WRITE _IOW('U', 3, struct usb_raw_ep_io) #define USB_RAW_IOCTL_EP0_READ _IOWR('U', 4, struct usb_raw_ep_io) #define USB_RAW_IOCTL_EP_ENABLE _IOW('U', 5, struct usb_endpoint_descriptor) #define USB_RAW_IOCTL_EP_DISABLE _IOW('U', 6, __u32) #define USB_RAW_IOCTL_EP_WRITE _IOW('U', 7, struct usb_raw_ep_io) #define USB_RAW_IOCTL_EP_READ _IOWR('U', 8, struct usb_raw_ep_io) #define USB_RAW_IOCTL_CONFIGURE _IO('U', 9) #define USB_RAW_IOCTL_VBUS_DRAW _IOW('U', 10, __u32) #define USB_RAW_IOCTL_EPS_INFO _IOR('U', 11, struct usb_raw_eps_info) #define USB_RAW_IOCTL_EP0_STALL _IO('U', 12) #define USB_RAW_IOCTL_EP_SET_HALT _IOW('U', 13, __u32) #define USB_RAW_IOCTL_EP_CLEAR_HALT _IOW('U', 14, __u32) #define USB_RAW_IOCTL_EP_SET_WEDGE _IOW('U', 15, __u32) static int usb_raw_open() { return open("/dev/raw-gadget", O_RDWR); } static int usb_raw_init(int fd, uint32_t speed, const char* driver, const char* device) { struct usb_raw_init arg; strncpy((char*)&arg.driver_name[0], driver, sizeof(arg.driver_name)); strncpy((char*)&arg.device_name[0], device, sizeof(arg.device_name)); arg.speed = speed; return ioctl(fd, USB_RAW_IOCTL_INIT, &arg); } static int usb_raw_run(int fd) { return ioctl(fd, USB_RAW_IOCTL_RUN, 0); } static int usb_raw_configure(int fd) { return ioctl(fd, USB_RAW_IOCTL_CONFIGURE, 0); } static int usb_raw_vbus_draw(int fd, uint32_t power) { return ioctl(fd, USB_RAW_IOCTL_VBUS_DRAW, power); } static int usb_raw_ep0_write(int fd, struct usb_raw_ep_io* io) { return ioctl(fd, USB_RAW_IOCTL_EP0_WRITE, io); } static int usb_raw_ep0_read(int fd, struct usb_raw_ep_io* io) { return ioctl(fd, USB_RAW_IOCTL_EP0_READ, io); } static int usb_raw_event_fetch(int fd, struct usb_raw_event* event) { return ioctl(fd, USB_RAW_IOCTL_EVENT_FETCH, event); } static int usb_raw_ep_enable(int fd, struct usb_endpoint_descriptor* desc) { return ioctl(fd, USB_RAW_IOCTL_EP_ENABLE, desc); } static int usb_raw_ep_disable(int fd, int ep) { return ioctl(fd, USB_RAW_IOCTL_EP_DISABLE, ep); } static int usb_raw_ep0_stall(int fd) { return ioctl(fd, USB_RAW_IOCTL_EP0_STALL, 0); } #define USB_MAX_PACKET_SIZE 4096 struct usb_raw_control_event { struct usb_raw_event inner; struct usb_ctrlrequest ctrl; char data[USB_MAX_PACKET_SIZE]; }; struct usb_raw_ep_io_data { struct usb_raw_ep_io inner; char data[USB_MAX_PACKET_SIZE]; }; static void set_interface(int fd, int n) { struct usb_device_index* index = lookup_usb_index(fd); if (!index) return; if (index->iface_cur >= 0 && index->iface_cur < index->ifaces_num) { for (int ep = 0; ep < index->ifaces[index->iface_cur].eps_num; ep++) { int rv = usb_raw_ep_disable( fd, index->ifaces[index->iface_cur].eps[ep].handle); if (rv < 0) { } else { } } } if (n >= 0 && n < index->ifaces_num) { for (int ep = 0; ep < index->ifaces[n].eps_num; ep++) { int rv = usb_raw_ep_enable(fd, &index->ifaces[n].eps[ep].desc); if (rv < 0) { } else { index->ifaces[n].eps[ep].handle = rv; } } index->iface_cur = n; } } static int configure_device(int fd) { struct usb_device_index* index = lookup_usb_index(fd); if (!index) return -1; int rv = usb_raw_vbus_draw(fd, index->bMaxPower); if (rv < 0) { return rv; } rv = usb_raw_configure(fd); if (rv < 0) { return rv; } set_interface(fd, 0); return 0; } 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) { if (!dev) { return -1; } int fd = usb_raw_open(); if (fd < 0) { return fd; } if (fd >= MAX_FDS) { close(fd); return -1; } struct usb_device_index* index = add_usb_index(fd, dev, dev_len); if (!index) { return -1; } char device[32]; sprintf(&device[0], "dummy_udc.%llu", procid); int rv = usb_raw_init(fd, speed, "dummy_udc", &device[0]); if (rv < 0) { return rv; } rv = usb_raw_run(fd); if (rv < 0) { return rv; } bool done = false; while (!done) { struct usb_raw_control_event event; event.inner.type = 0; event.inner.length = sizeof(event.ctrl); rv = usb_raw_event_fetch(fd, (struct usb_raw_event*)&event); if (rv < 0) { return rv; } if (event.inner.type != USB_RAW_EVENT_CONTROL) continue; char* response_data = NULL; uint32_t response_length = 0; struct usb_qualifier_descriptor qual; if (event.ctrl.bRequestType & USB_DIR_IN) { if (!lookup_connect_response_in(fd, descs, &event.ctrl, &qual, &response_data, &response_length)) { usb_raw_ep0_stall(fd); continue; } } else { if (!lookup_connect_response_out(fd, descs, &event.ctrl, &done)) { usb_raw_ep0_stall(fd); continue; } response_data = NULL; response_length = event.ctrl.wLength; } if ((event.ctrl.bRequestType & USB_TYPE_MASK) == USB_TYPE_STANDARD && event.ctrl.bRequest == USB_REQ_SET_CONFIGURATION) { rv = configure_device(fd); if (rv < 0) { return rv; } } struct usb_raw_ep_io_data response; response.inner.ep = 0; response.inner.flags = 0; if (response_length > sizeof(response.data)) response_length = 0; if (event.ctrl.wLength < response_length) response_length = event.ctrl.wLength; response.inner.length = response_length; if (response_data) memcpy(&response.data[0], response_data, response_length); else memset(&response.data[0], 0, response_length); if (event.ctrl.bRequestType & USB_DIR_IN) { rv = usb_raw_ep0_write(fd, (struct usb_raw_ep_io*)&response); } else { rv = usb_raw_ep0_read(fd, (struct usb_raw_ep_io*)&response); } if (rv < 0) { return rv; } } sleep_ms(200); return fd; } 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 long syz_open_dev(volatile long a0, volatile long a1, volatile long a2) { if (a0 == 0xc || a0 == 0xb) { char buf[128]; sprintf(buf, "/dev/%s/%d:%d", a0 == 0xc ? "char" : "block", (uint8_t)a1, (uint8_t)a2); return open(buf, O_RDWR, 0); } else { char buf[1024]; char* hash; strncpy(buf, (char*)a0, sizeof(buf) - 1); buf[sizeof(buf) - 1] = 0; while ((hash = strchr(buf, '#'))) { *hash = '0' + (char)(a1 % 10); a1 /= 10; } return open(buf, a2, 0); } } static void kill_and_wait(int pid, int* status) { kill(-pid, SIGKILL); kill(pid, SIGKILL); for (int i = 0; i < 100; i++) { if (waitpid(-1, status, WNOHANG | __WALL) == pid) return; usleep(1000); } DIR* dir = opendir("/sys/fs/fuse/connections"); if (dir) { for (;;) { struct dirent* ent = readdir(dir); if (!ent) break; if (strcmp(ent->d_name, ".") == 0 || strcmp(ent->d_name, "..") == 0) continue; char abort[300]; snprintf(abort, sizeof(abort), "/sys/fs/fuse/connections/%s/abort", ent->d_name); int fd = open(abort, O_WRONLY); if (fd == -1) { continue; } if (write(fd, abort, 1) < 0) { } close(fd); } closedir(dir); } else { } while (waitpid(-1, status, __WALL) != pid) { } } static void setup_test() { prctl(PR_SET_PDEATHSIG, SIGKILL, 0, 0, 0); setpgrp(); write_file("/proc/self/oom_score_adj", "1000"); } static void execute_one(void); #define WAIT_FLAGS __WALL static void loop(void) { int iter = 0; for (;; iter++) { int pid = fork(); if (pid < 0) exit(1); if (pid == 0) { setup_test(); execute_one(); exit(0); } int status = 0; uint64_t start = current_time_ms(); for (;;) { sleep_ms(10); if (waitpid(-1, &status, WNOHANG | WAIT_FLAGS) == pid) break; if (current_time_ms() - start < 5000) continue; kill_and_wait(pid, &status); break; } } } uint64_t r[1] = {0xffffffffffffffff}; void execute_one(void) { intptr_t res = 0; if (write(1, "executing program\n", sizeof("executing program\n") - 1)) { } memcpy((void*)0x20000040, "\x11\x01\x00\x00\x73\x33\x36\x08\x8d\xee\x1a\xdb\x23\x61\x00\x00\x00" "\x01\x09\x02\x2d\x00\x01\x10\x00\x00\x00\x09\x04\x00\x00\x03\xfe\x03" "\x01\x00\x09\xcd\x8d\x1f\x00\x02\x00\x00\x00\x09\x05\x05\x02\x00\x06" "\x7e\x00\x10\x09\x05\x8b\x1e\x20", 59); syz_usb_connect(/*speed=*/0, /*dev_len=*/0x3f, /*dev=*/0x20000040, /*conn_descs=*/0); res = -1; res = syz_open_dev(/*dev=*/0xc, /*major=*/0xb4, /*minor=*/0); if (res != -1) r[0] = res; memcpy( (void*)0x20000900, "\xf3\x15\x52\xc5\x1e\xf8\x1b\x5a\xbf\xa9\xf8\xff\x81\x0b\x31\x0c\xab\xf0" "\x1c\x94\xd4\xce\x91\xd4\x36\x42\x3c\xf9\x0c\x15\xd9\x7c\x12\x17\xcc\x21" "\xe8\x00\xe1\xa7\xc1\xff\xe6\xb7\x0e\xb4\xe8\x6a\xd3\xd2\x17\xad\x07\xe6" "\x56\xcd\xbd\xf7\x56\xca\x50\x78\xb2\x7a\x12\xac\xf5\x1c\x89\xb2\xf4\x33" "\x71\x4d\xa7\xb7\x73\x0e\xf4\x23\xc4\x1b\x60\x6e\x39\x50\xb8\x35\xb2\x57" "\x0c\xb9\x9b\xb7\x3b\xbd\xe8\x1d\x70\x7b\x6f\x54\xdb\x5f\xfc\x8c\x9d\x48" "\xb0\x2d\x71\x39\x87\x0a\x9e\x44\x8f\x6b\xc6\xe1\x27\xfb\x10\xe2\x1a\xa5" "\xb6\x12\x87\x7a\x37\xd6\x40\x83\x76\x71\xa1\xea\xe4\x32\xa8\xe0\xf2\x7b" "\x6b\x91\xcd\xda\xf3\x73\x93\xfb\x13\x7f\x5d\x7d\x27\x30\x21\xb6\x65\x43" "\x7d\x5c\x3b\x20\x45\xeb\x8e\x43\x31\xc7\x3e\xc2\x30\x74\xe7\xf8\xb7\x00" 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"\x96\x26\xfa\x5f\xed\xf2\x42\x84\x20\x91\xa8\x5c\x6e\xb6\x3d\xc5\xf8\xaa" "\xfc\x86\x39\x75\x1e\x87\xbe\x1b\x69\x1a\x45\xa9\x2b\x11\x1c\xb1\xd9\xb1" "\xc8\xf0\x29\x65\xab\x43\x19\x1a\xd3\x20\xda\x35\x20\x10\x14\xe2\x5c\xb2" "\x2f\x96\xeb\xc5\x32\xdb\x54\xc8\xc2\x8e\xb0\xda\x2b\xe0\x85\x98\x8b\x06" "\xec\xd7\x2c\x34\xd9\xd0\x07\x11\xc4\x9d\x32\x72\xc7\x52\x31\xa2\xbc\xbf" "\x29\xc0\x33\xba\x42\xb5\xf7\xa3\x59\x0a\x20\x42\xf5\x68\x2b\x15\xc8\xb4" "\xe8\xf1\x38\x9c\xbb\xdb\xdb\xb7\xa7\xd7\x43\x37\xd2\x7c\x5b\x2e\x8b\x03" "\xf0\x60\x3a\x69\xe6\xad\x8c\x3e\x0b\x95\xdd\x3e\xef\xa5\x70\x63\x65\xa6" "\x99\x7b\xb2\x52\x5a\x57\x1e\x7b\x79\x51\x15\xdc\xdd\xcb\x59\x06\x76\xe5" "\xb4\x10\x28\x71\xbf\xbe\x3d\xda\x15\xb7\x98\x60\xff\xe3\x77\x51\x3b\x10" "\x92\xa4\xf3\x85\xcf\xea\x60\x59\xc8\x72\xc4\xd8\xba\x97\x61\x27\x1a\x21" "\x7d\x02\x15\x79\xf5\x90\x6a\x45\x47\xee\xf1\xd6\x33\x13\xb9\x52\x41\xdb" "\xc3\x51\x1c\xaa\xed\xd6\xc7\xa8\x60\x8c\x22\x93\xf5\x96\x10\xbc\x36\xbd" "\x7d\x8a\xca\xe8\x1d\x2a\xf7\xaf\x84\x3f\xea\x21\xca\xc0\x41\x99\xc9\x1e" "\xc1\x70\x5a\x10\xa2\x22\xd6\xcc\x47\x0e\xed\x15\x9e\xb4\x83\x2a\x76\x48" "\x1b\x96\xe6\x0e\xd0\x8c\xcc\x96\xb5\x08\x65\x05\x5f\xe9\x64\x55\xd4\xa6" "\x1c\x5c\xab\xe2\x8a\xa9\xbd\x9b\xa3\xbb\x62\xc9\xee\x31\x92\x90\x26\x11" "\xaa\xf4\xca\x33\xd2\xe0\xba\x95\x21\xb2\x16\xa4\x36\xe1\xff\xfb\xee\xcb" "\xdf\x72\x81\x4e\x42\xd2\xa9\x22\xb5\xe7\xe3\x37\x59\x7d\x7f\x2b\x26\x5c" "\x29\x3d\x54\x25\xa2\x77\xc9\xc6\x0f\xb4\xff\xab\x10\x8c\x73\x96\x4e\x18" "\xf7\x6a\xbb\x46\x5a\x94\xaa\x8f\x3a\x3e\xa4\x1e\xa2\xc8\x48\xab\xa5\xdc" "\x83\x74\x19\xd0\xac\x33\x93\x55\xd1\xf9\xc5\x8e\x33\xf5\x00\x2c\x80\xbe" "\xbb\xb6\x8f\x6c\x45\x21\xf4\x01\xad\xc5\xd9\x3a\x32\x17\x54\xfd\xaa\x08" "\x99\xc9\x1c\x7d\x83\x3d\x4e\x0b\xbf\xa6\x15\x86\x04\x5a\xa7\x90\xc9\xd9" "\x90\x53\x3c\x71\x5e\xa9\x3c\x1b\x08\x57\xf1\x22\x3b\xa1\xf5\x6d\x1b\x9b" "\x0f\x36\x76\x74\xe1\x08\x92\xd7\x88\x25\x9b\x0a\x75\x95\x71\xb5\xf2\x36" "\xee\x32\x69\x27\xfc\x17\x79\xda\x60\x3b\x83\x10\x6d\x33\xb0\x0d\xfd\x98" "\x4b\x24\xd9\x06\x9c\xcd\x6c\x29\x69\xeb\x1f\x3a\x56\x4f\x87\xa0\x00\x6d" "\xa2\xd7\x6b\xbe\xdf\x7b\xd1\x5e\x13\x4b\x88\x3a\x12\x67\x92\xd5\xd4\x14" "\xa5\x2a\xe8\xa7\x6c\x87\xed\x22\xc5\x4f\x8b\x93\x4a\xf5\x2b\xcb\xb4\xb1" "\xeb\x6a\xf4\x29\x3c\x86\x74\x35\x52\xf4\x23\x42\x2d\xb3\x33\x02\x56\x58" "\x40\x7c\xa1\x4c\x2b\x59\x48\xe5\xba\x78\x96\x16\xb3\x52\x63\x6d\x56\xf2" "\xea\x6c\xf9\xd0\x06\xb0\x1b\xd6\x4b\x45\xd1\x08\xc6\x06\xfb\x79\x5e\x54" "\xdc\x6c\x1d\x69\xe0\x4a\xcf\xfd\x82\x10\x2d\x06\x8c\x07\x5f\xfc\x32\x49" "\x02\x91\x1d\x0d\x34\x60\x84\x00\xf0\x86\xa5\xc6\x40\x13\xf0\x6c\x0e\xcc" "\x2e\xf4\xef\xbe\xf7\x57\x94\xf3\x06\xcc\x43\xa7\x38\x2d\xab\xf4\x25\x1e" "\xba\x32\x07\xd4\x87\x7d\x44\x40\x46\x71\x02\x79\x9a\x38\xcb\xc5\x11\x5f" "\x4c\x2e\xce\xb1\x1a\x5e\x67\x4f\xa0\xa9\x90\x7f\xad\x7b\x66\x3f\x47\x37" "\x15\xe9\x46\xc0\x7c\xe9\x5e\x5c\xb4\x53\x12\x67\x30\xd0\x0c\xda\x14\x74" "\x3e\xb0\x48\xf7\x53\xb7\x0d\xba\xab\xb4\x84\xee\x06\x14\x29\x31\x60\x4d" "\x61\x46\x6d\xb2\x1f\xa6\x9f\x52\xd3\x60\x5b\x63\x9a\x54\xd9\x03\xa2\xaf" "\x6a\xd4\x32\x7e\xb6\xfc\x61\x82\x10\x8e\xd9\x57\x9f\xc1\x09\x8d\x17\xc4" "\x3f\x2c\xe8\xa7\xc5\x34\xf1\xef\xaf\x87\x84\x78\xbe\xdd\xe7\xfe\x62\xd2" "\x01\xa0\x49\x74\xa5\x50\xac\xd6\x40\x4c\x6c\x36\x3c\xc0\x4c\x65\xa9\x81" "\x00\xe3\xb3\x30\x94\xd3\x81\x3b\xcb\x5f\x01\xc2\xbb\x68\x3d\x91\x32\x36" "\x75\xa1\x87\xb3\x12\x55\xb6\x5f\x19\x69\xcc\x62\xb0\x59\x00\xab\x3d\xfe" "\xeb\x74\x82\x37\x2c\x26\x8b\x16\x7b\x12\xa6\xfb\x12\x88\x68\xee\x85\x62" "\x94\xd5\x2c\x43\x05\x6c\x85\xe0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" "\x00", 4087); syscall(__NR_write, /*fd=*/r[0], /*buf=*/0x20000900ul, /*count=*/0xff7ul); } int main(void) { syscall(__NR_mmap, /*addr=*/0x1ffff000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x20000000ul, /*len=*/0x1000000ul, /*prot=PROT_WRITE|PROT_READ|PROT_EXEC*/ 7ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); syscall(__NR_mmap, /*addr=*/0x21000000ul, /*len=*/0x1000ul, /*prot=*/0ul, /*flags=MAP_FIXED|MAP_ANONYMOUS|MAP_PRIVATE*/ 0x32ul, /*fd=*/-1, /*offset=*/0ul); const char* reason; (void)reason; for (procid = 0; procid < 5; procid++) { if (fork() == 0) { loop(); } } sleep(1000000); return 0; }