// https://syzkaller.appspot.com/bug?id=2b061d1fabd9760e98f92163543189b637c4af36 // autogenerated by syzkaller (https://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include #include static long syz_open_dev(long a0, long a1, 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); } } uint64_t r[2] = {0xffffffffffffffff, 0xffffffffffffffff}; int main(void) { syscall(__NR_mmap, 0x20000000, 0x1000000, 3, 0x32, -1, 0); long res = 0; memcpy((void*)0x20000000, "/dev/usbmon#", 13); res = syz_open_dev(0x20000000, 0, 0); if (res != -1) r[0] = res; memcpy((void*)0x20000380, "/dev/bus/usb/00#/00#", 21); syz_open_dev(0x20000380, 0x202, 0); syscall(__NR_pread64, r[0], 0x200003c0, 0x1000, 0); memcpy((void*)0x20000400, "/dev/usbmon#", 13); res = syz_open_dev(0x20000400, 0, 0); if (res != -1) r[1] = res; syscall(__NR_mmap, 0x20e00000, 0x200000, 0xff, 0x8012, r[1], 0); return 0; }