// https://syzkaller.appspot.com/bug?id=4522c4fb3896c243a66d4bda935f828e80899c2c // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include #include static uintptr_t syz_open_dev(uintptr_t a0, uintptr_t a1, uintptr_t 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)); buf[sizeof(buf) - 1] = 0; while ((hash = strchr(buf, '#'))) { *hash = '0' + (char)(a1 % 10); a1 /= 10; } return open(buf, a2, 0); } } long r[1]; void loop() { memset(r, -1, sizeof(r)); syscall(__NR_mmap, 0x20000000, 0xfff000, 0x3, 0x32, 0xffffffff, 0x0); memcpy((void*)0x20005000, "/dev/sg#", 9); r[0] = syz_open_dev(0x20005000, 0x0, 0x8002); memcpy((void*)0x208ac000, "\xc5\x3d\xb8\x5e\x1c\x8d\x22\x5d\xbb\xf3\xb2\x8b\x73\x93\x15" "\xd6\x1d\xcc\x43\x6a\xed\x4a\xd2\xbc\x70\x18\xce\xbc\x97\xb5" "\x21\x77\x87\x2c\x6f\xf7\x00\xcd\x3b\x16\x0e\x96\xaa\x1f\x5b", 45); syscall(__NR_write, r[0], 0x208ac000, 0x2d); *(uint64_t*)0x207efff0 = 0x20563000; *(uint64_t*)0x207efff8 = 0x1000; syscall(__NR_readv, r[0], 0x207efff0, 0x1); } int main() { loop(); return 0; }