| // WARNING in wa_nep_create/usb_submit_urb |
| // https://syzkaller.appspot.com/bug?id=a07f49ea1871dcb4a34ff5aff5a46b0fcd8b3523 |
| // status:open |
| // autogenerated by syzkaller (https://github.com/google/syzkaller) |
| |
| #define _GNU_SOURCE |
| |
| #include <endian.h> |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <stdarg.h> |
| #include <stdbool.h> |
| #include <stddef.h> |
| #include <stdint.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/mount.h> |
| #include <sys/stat.h> |
| #include <sys/syscall.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include <linux/usb/ch9.h> |
| |
| unsigned long long procid; |
| |
| static void sleep_ms(uint64_t ms) |
| { |
| usleep(ms * 1000); |
| } |
| |
| #define USB_MAX_EP_NUM 32 |
| |
| struct usb_device_index { |
| struct usb_device_descriptor* dev; |
| struct usb_config_descriptor* config; |
| unsigned config_length; |
| struct usb_interface_descriptor* iface; |
| struct usb_endpoint_descriptor* eps[USB_MAX_EP_NUM]; |
| unsigned eps_num; |
| }; |
| |
| static bool parse_usb_descriptor(char* buffer, size_t length, |
| struct usb_device_index* index) |
| { |
| if (length < |
| sizeof(*index->dev) + sizeof(*index->config) + sizeof(*index->iface)) |
| return false; |
| index->dev = (struct usb_device_descriptor*)buffer; |
| index->config = (struct usb_config_descriptor*)(buffer + sizeof(*index->dev)); |
| index->config_length = length - sizeof(*index->dev); |
| index->iface = |
| (struct usb_interface_descriptor*)(buffer + sizeof(*index->dev) + |
| sizeof(*index->config)); |
| index->eps_num = 0; |
| 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_ENDPOINT) { |
| index->eps[index->eps_num] = |
| (struct usb_endpoint_descriptor*)(buffer + offset); |
| index->eps_num++; |
| } |
| if (index->eps_num == USB_MAX_EP_NUM) |
| break; |
| offset += desc_length; |
| } |
| return true; |
| } |
| |
| enum usb_fuzzer_event_type { |
| USB_FUZZER_EVENT_INVALID, |
| USB_FUZZER_EVENT_CONNECT, |
| USB_FUZZER_EVENT_DISCONNECT, |
| USB_FUZZER_EVENT_SUSPEND, |
| USB_FUZZER_EVENT_RESUME, |
| USB_FUZZER_EVENT_CONTROL, |
| }; |
| |
| struct usb_fuzzer_event { |
| uint32_t type; |
| uint32_t length; |
| char data[0]; |
| }; |
| |
| struct usb_fuzzer_init { |
| uint64_t speed; |
| const char* driver_name; |
| const char* device_name; |
| }; |
| |
| struct usb_fuzzer_ep_io { |
| uint16_t ep; |
| uint16_t flags; |
| uint32_t length; |
| char data[0]; |
| }; |
| |
| #define USB_FUZZER_IOCTL_INIT _IOW('U', 0, struct usb_fuzzer_init) |
| #define USB_FUZZER_IOCTL_RUN _IO('U', 1) |
| #define USB_FUZZER_IOCTL_EP0_READ _IOWR('U', 2, struct usb_fuzzer_event) |
| #define USB_FUZZER_IOCTL_EP0_WRITE _IOW('U', 3, struct usb_fuzzer_ep_io) |
| #define USB_FUZZER_IOCTL_EP_ENABLE _IOW('U', 4, struct usb_endpoint_descriptor) |
| #define USB_FUZZER_IOCTL_EP_WRITE _IOW('U', 6, struct usb_fuzzer_ep_io) |
| #define USB_FUZZER_IOCTL_EP_READ _IOWR('U', 7, struct usb_fuzzer_ep_io) |
| #define USB_FUZZER_IOCTL_CONFIGURE _IO('U', 8) |
| #define USB_FUZZER_IOCTL_VBUS_DRAW _IOW('U', 9, uint32_t) |
| |
| int usb_fuzzer_open() |
| { |
| return open("/sys/kernel/debug/usb-fuzzer", O_RDWR); |
| } |
| |
| int usb_fuzzer_init(int fd, uint32_t speed, const char* driver, |
| const char* device) |
| { |
| struct usb_fuzzer_init arg; |
| arg.speed = speed; |
| arg.driver_name = driver; |
| arg.device_name = device; |
| return ioctl(fd, USB_FUZZER_IOCTL_INIT, &arg); |
| } |
| |
| int usb_fuzzer_run(int fd) |
| { |
| return ioctl(fd, USB_FUZZER_IOCTL_RUN, 0); |
| } |
| |
| int usb_fuzzer_ep0_read(int fd, struct usb_fuzzer_event* event) |
| { |
| return ioctl(fd, USB_FUZZER_IOCTL_EP0_READ, event); |
| } |
| |
| int usb_fuzzer_ep0_write(int fd, struct usb_fuzzer_ep_io* io) |
| { |
| return ioctl(fd, USB_FUZZER_IOCTL_EP0_WRITE, io); |
| } |
| |
| int usb_fuzzer_ep_write(int fd, struct usb_fuzzer_ep_io* io) |
| { |
| return ioctl(fd, USB_FUZZER_IOCTL_EP_WRITE, io); |
| } |
| |
| int usb_fuzzer_ep_read(int fd, struct usb_fuzzer_ep_io* io) |
| { |
| return ioctl(fd, USB_FUZZER_IOCTL_EP_READ, io); |
| } |
| |
| int usb_fuzzer_ep_enable(int fd, struct usb_endpoint_descriptor* desc) |
| { |
| return ioctl(fd, USB_FUZZER_IOCTL_EP_ENABLE, desc); |
| } |
| |
| int usb_fuzzer_configure(int fd) |
| { |
| return ioctl(fd, USB_FUZZER_IOCTL_CONFIGURE, 0); |
| } |
| |
| int usb_fuzzer_vbus_draw(int fd, uint32_t power) |
| { |
| return ioctl(fd, USB_FUZZER_IOCTL_VBUS_DRAW, power); |
| } |
| |
| #define USB_MAX_PACKET_SIZE 1024 |
| |
| struct usb_fuzzer_control_event { |
| struct usb_fuzzer_event inner; |
| struct usb_ctrlrequest ctrl; |
| char data[USB_MAX_PACKET_SIZE]; |
| }; |
| |
| struct usb_fuzzer_ep_io_data { |
| struct usb_fuzzer_ep_io inner; |
| char data[USB_MAX_PACKET_SIZE]; |
| }; |
| |
| 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 bool lookup_connect_response(struct vusb_connect_descriptors* descs, |
| struct usb_device_index* index, |
| struct usb_ctrlrequest* ctrl, |
| char** response_data, |
| uint32_t* response_length, bool* done) |
| { |
| uint8_t str_idx; |
| 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 (str_idx >= descs->strs_len && descs->strs_len > 0) { |
| str_idx = descs->strs_len - 1; |
| } |
| *response_data = descs->strs[str_idx].str; |
| *response_length = descs->strs[str_idx].len; |
| return true; |
| case USB_DT_BOS: |
| *response_data = descs->bos; |
| *response_length = descs->bos_len; |
| return true; |
| case USB_DT_DEVICE_QUALIFIER: |
| *response_data = descs->qual; |
| *response_length = descs->qual_len; |
| return true; |
| default: |
| exit(1); |
| return false; |
| } |
| break; |
| case USB_REQ_SET_CONFIGURATION: |
| *response_length = 0; |
| *response_data = NULL; |
| *done = true; |
| return true; |
| default: |
| exit(1); |
| return false; |
| } |
| break; |
| default: |
| exit(1); |
| return false; |
| } |
| return false; |
| } |
| |
| static volatile long syz_usb_connect(volatile long a0, volatile long a1, |
| volatile long a2, volatile long a3) |
| { |
| int64_t speed = a0; |
| int64_t dev_len = a1; |
| char* dev = (char*)a2; |
| struct vusb_connect_descriptors* descs = (struct vusb_connect_descriptors*)a3; |
| if (!dev) { |
| return -1; |
| } |
| struct usb_device_index index; |
| memset(&index, 0, sizeof(index)); |
| int rv = 0; |
| rv = parse_usb_descriptor(dev, dev_len, &index); |
| if (!rv) { |
| return rv; |
| } |
| int fd = usb_fuzzer_open(); |
| if (fd < 0) { |
| return fd; |
| } |
| char device[32]; |
| sprintf(&device[0], "dummy_udc.%llu", procid); |
| rv = usb_fuzzer_init(fd, speed, "dummy_udc", &device[0]); |
| if (rv < 0) { |
| return rv; |
| } |
| rv = usb_fuzzer_run(fd); |
| if (rv < 0) { |
| return rv; |
| } |
| bool done = false; |
| while (!done) { |
| struct usb_fuzzer_control_event event; |
| event.inner.type = 0; |
| event.inner.length = sizeof(event.ctrl); |
| rv = usb_fuzzer_ep0_read(fd, (struct usb_fuzzer_event*)&event); |
| if (rv < 0) { |
| return rv; |
| } |
| if (event.inner.type != USB_FUZZER_EVENT_CONTROL) |
| continue; |
| bool response_found = false; |
| char* response_data = NULL; |
| uint32_t response_length = 0; |
| response_found = lookup_connect_response( |
| descs, &index, &event.ctrl, &response_data, &response_length, &done); |
| if (!response_found) { |
| return -1; |
| } |
| if (done) { |
| rv = usb_fuzzer_vbus_draw(fd, index.config->bMaxPower); |
| if (rv < 0) { |
| return rv; |
| } |
| rv = usb_fuzzer_configure(fd); |
| if (rv < 0) { |
| return rv; |
| } |
| unsigned ep; |
| for (ep = 0; ep < index.eps_num; ep++) { |
| rv = usb_fuzzer_ep_enable(fd, index.eps[ep]); |
| if (rv < 0) { |
| } else { |
| } |
| } |
| } |
| struct usb_fuzzer_ep_io_data response; |
| response.inner.ep = 0; |
| response.inner.flags = 0; |
| if (response_length > sizeof(response.data)) |
| response_length = 0; |
| response.inner.length = response_length; |
| if (response_data) |
| memcpy(&response.data[0], response_data, response_length); |
| if (event.ctrl.wLength < response.inner.length) |
| response.inner.length = event.ctrl.wLength; |
| rv = usb_fuzzer_ep0_write(fd, (struct usb_fuzzer_ep_io*)&response); |
| if (rv < 0) { |
| return rv; |
| } |
| } |
| sleep_ms(200); |
| return fd; |
| } |
| |
| int main(void) |
| { |
| syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); |
| |
| *(uint8_t*)0x20000040 = 0x12; |
| *(uint8_t*)0x20000041 = 1; |
| *(uint16_t*)0x20000042 = 0; |
| *(uint8_t*)0x20000044 = 0xf2; |
| *(uint8_t*)0x20000045 = 0xdb; |
| *(uint8_t*)0x20000046 = 0x9c; |
| *(uint8_t*)0x20000047 = 0x20; |
| *(uint16_t*)0x20000048 = 0x13dc; |
| *(uint16_t*)0x2000004a = 0x5611; |
| *(uint16_t*)0x2000004c = 0x605c; |
| *(uint8_t*)0x2000004e = 4; |
| *(uint8_t*)0x2000004f = 2; |
| *(uint8_t*)0x20000050 = 5; |
| *(uint8_t*)0x20000051 = 1; |
| *(uint8_t*)0x20000052 = 9; |
| *(uint8_t*)0x20000053 = 2; |
| *(uint16_t*)0x20000054 = 0x89; |
| *(uint8_t*)0x20000056 = 1; |
| *(uint8_t*)0x20000057 = 0x69; |
| *(uint8_t*)0x20000058 = 4; |
| *(uint8_t*)0x20000059 = 0; |
| *(uint8_t*)0x2000005a = 0xc1; |
| *(uint8_t*)0x2000005b = 9; |
| *(uint8_t*)0x2000005c = 4; |
| *(uint8_t*)0x2000005d = 0xc3; |
| *(uint8_t*)0x2000005e = 0; |
| *(uint8_t*)0x2000005f = 0xa; |
| *(uint8_t*)0x20000060 = 0xe0; |
| *(uint8_t*)0x20000061 = 2; |
| *(uint8_t*)0x20000062 = 1; |
| *(uint8_t*)0x20000063 = 1; |
| *(uint8_t*)0x20000064 = 0xf; |
| *(uint8_t*)0x20000065 = 0x21; |
| *(uint16_t*)0x20000066 = 9; |
| *(uint8_t*)0x20000068 = 2; |
| *(uint8_t*)0x20000069 = 3; |
| *(uint8_t*)0x2000006a = 0x23; |
| *(uint16_t*)0x2000006b = 0xbff0; |
| *(uint8_t*)0x2000006d = 0x23; |
| *(uint16_t*)0x2000006e = 0xf7; |
| *(uint8_t*)0x20000070 = 0x23; |
| *(uint16_t*)0x20000071 = 0x9a; |
| *(uint8_t*)0x20000073 = 9; |
| *(uint8_t*)0x20000074 = 5; |
| *(uint8_t*)0x20000075 = 0xf; |
| *(uint8_t*)0x20000076 = 2; |
| *(uint16_t*)0x20000077 = 1; |
| *(uint8_t*)0x20000079 = 0; |
| *(uint8_t*)0x2000007a = 7; |
| *(uint8_t*)0x2000007b = -1; |
| *(uint8_t*)0x2000007c = 9; |
| *(uint8_t*)0x2000007d = 5; |
| *(uint8_t*)0x2000007e = 8; |
| *(uint8_t*)0x2000007f = 0; |
| *(uint16_t*)0x20000080 = 0; |
| *(uint8_t*)0x20000082 = 0x20; |
| *(uint8_t*)0x20000083 = 0x7b; |
| *(uint8_t*)0x20000084 = 6; |
| *(uint8_t*)0x20000085 = 9; |
| *(uint8_t*)0x20000086 = 5; |
| *(uint8_t*)0x20000087 = 0xe; |
| *(uint8_t*)0x20000088 = 8; |
| *(uint16_t*)0x20000089 = 0; |
| *(uint8_t*)0x2000008b = 0x25; |
| *(uint8_t*)0x2000008c = 0; |
| *(uint8_t*)0x2000008d = 1; |
| *(uint8_t*)0x2000008e = 2; |
| *(uint8_t*)0x2000008f = 0x2f; |
| *(uint8_t*)0x20000090 = 2; |
| *(uint8_t*)0x20000091 = 2; |
| *(uint8_t*)0x20000092 = 9; |
| *(uint8_t*)0x20000093 = 5; |
| *(uint8_t*)0x20000094 = 9; |
| *(uint8_t*)0x20000095 = 0x11; |
| *(uint16_t*)0x20000096 = 0; |
| *(uint8_t*)0x20000098 = 0; |
| *(uint8_t*)0x20000099 = 0; |
| *(uint8_t*)0x2000009a = 5; |
| *(uint8_t*)0x2000009b = 2; |
| *(uint8_t*)0x2000009c = 0x21; |
| *(uint8_t*)0x2000009d = 9; |
| *(uint8_t*)0x2000009e = 5; |
| *(uint8_t*)0x2000009f = 0xb; |
| *(uint8_t*)0x200000a0 = 0x1c; |
| *(uint16_t*)0x200000a1 = 0; |
| *(uint8_t*)0x200000a3 = 0; |
| *(uint8_t*)0x200000a4 = 9; |
| *(uint8_t*)0x200000a5 = 3; |
| *(uint8_t*)0x200000a6 = 2; |
| *(uint8_t*)0x200000a7 = 8; |
| *(uint8_t*)0x200000a8 = 2; |
| *(uint8_t*)0x200000a9 = 8; |
| *(uint8_t*)0x200000aa = 9; |
| *(uint8_t*)0x200000ab = 5; |
| *(uint8_t*)0x200000ac = 3; |
| *(uint8_t*)0x200000ad = 0x12; |
| *(uint16_t*)0x200000ae = 9; |
| *(uint8_t*)0x200000b0 = 7; |
| *(uint8_t*)0x200000b1 = 8; |
| *(uint8_t*)0x200000b2 = 2; |
| *(uint8_t*)0x200000b3 = 9; |
| *(uint8_t*)0x200000b4 = 5; |
| *(uint8_t*)0x200000b5 = 0x80; |
| *(uint8_t*)0x200000b6 = 0x10; |
| *(uint16_t*)0x200000b7 = 9; |
| *(uint8_t*)0x200000b9 = 0x8b; |
| *(uint8_t*)0x200000ba = 0; |
| *(uint8_t*)0x200000bb = 0x13; |
| *(uint8_t*)0x200000bc = 9; |
| *(uint8_t*)0x200000bd = 5; |
| *(uint8_t*)0x200000be = 0x8f; |
| *(uint8_t*)0x200000bf = 0xe; |
| *(uint16_t*)0x200000c0 = 5; |
| *(uint8_t*)0x200000c2 = 8; |
| *(uint8_t*)0x200000c3 = 0x5f; |
| *(uint8_t*)0x200000c4 = 3; |
| *(uint8_t*)0x200000c5 = 9; |
| *(uint8_t*)0x200000c6 = 5; |
| *(uint8_t*)0x200000c7 = 0xf; |
| *(uint8_t*)0x200000c8 = 0; |
| *(uint16_t*)0x200000c9 = 0x101; |
| *(uint8_t*)0x200000cb = 3; |
| *(uint8_t*)0x200000cc = 5; |
| *(uint8_t*)0x200000cd = 0xcb; |
| *(uint8_t*)0x200000ce = 9; |
| *(uint8_t*)0x200000cf = 5; |
| *(uint8_t*)0x200000d0 = 1; |
| *(uint8_t*)0x200000d1 = 0x1c; |
| *(uint16_t*)0x200000d2 = 0x7fff; |
| *(uint8_t*)0x200000d4 = 0x42; |
| *(uint8_t*)0x200000d5 = 1; |
| *(uint8_t*)0x200000d6 = 0; |
| *(uint8_t*)0x200000d7 = 2; |
| *(uint8_t*)0x200000d8 = 0xe; |
| *(uint8_t*)0x200000d9 = 2; |
| *(uint8_t*)0x200000da = 0x24; |
| *(uint32_t*)0x20000880 = 0; |
| *(uint64_t*)0x20000884 = 0; |
| *(uint32_t*)0x2000088c = 0; |
| *(uint64_t*)0x20000890 = 0; |
| *(uint32_t*)0x20000898 = 6; |
| *(uint32_t*)0x2000089c = 0; |
| *(uint64_t*)0x200008a0 = 0; |
| *(uint32_t*)0x200008a8 = 0; |
| *(uint64_t*)0x200008ac = 0; |
| *(uint32_t*)0x200008b4 = 0; |
| *(uint64_t*)0x200008b8 = 0; |
| *(uint32_t*)0x200008c0 = 0; |
| *(uint64_t*)0x200008c4 = 0; |
| *(uint32_t*)0x200008cc = 0; |
| *(uint64_t*)0x200008d0 = 0; |
| *(uint32_t*)0x200008d8 = 0; |
| *(uint64_t*)0x200008dc = 0; |
| syz_usb_connect(5, 0x9b, 0x20000040, 0x20000880); |
| return 0; |
| } |