// autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #include #include #include #include #include #include #include #include static uintptr_t syz_open_procfs(uintptr_t a0, uintptr_t a1) { char buf[128]; memset(buf, 0, sizeof(buf)); if (a0 == 0) { snprintf(buf, sizeof(buf), "/proc/self/%s", (char*)a1); } else if (a0 == (uintptr_t)-1) { snprintf(buf, sizeof(buf), "/proc/thread-self/%s", (char*)a1); } else { snprintf(buf, sizeof(buf), "/proc/self/task/%d/%s", (int)a0, (char*)a1); } int fd = open(buf, O_RDWR); if (fd == -1) fd = open(buf, O_RDONLY); return fd; } long r[17]; void loop() { memset(r, -1, sizeof(r)); r[0] = syscall(__NR_mmap, 0x20000000ul, 0xfff000ul, 0x3ul, 0x32ul, 0xfffffffffffffffful, 0x0ul); memcpy((void*)0x20006ffd, "\x69\x6f\x00", 3); r[2] = syz_open_procfs(0x0ul, 0x20006ffdul); r[3] = syscall(__NR_read, r[2], 0x20cb6000ul, 0x0ul); r[4] = syscall(__NR_pipe2, 0x2069f000ul, 0x80800ul); if (r[4] != -1) r[5] = *(uint32_t*)0x2069f004; memcpy((void*)0x205b5000, "\x73\x6d\x61\x70\x73\x00", 6); r[7] = syz_open_procfs(0x0ul, 0x205b5000ul); r[8] = syscall(__NR_splice, r[7], 0x0ul, r[5], 0x0ul, 0x10000ul, 0x1ul); memcpy((void*)0x20373ff8, "\x2e\x2f\x66\x69\x6c\x65\x30\x00", 8); r[10] = syscall(__NR_mknod, 0x20373ff8ul, 0x103ful, 0x0ul); memcpy((void*)0x20f8aff8, "\x2e\x2f\x66\x69\x6c\x65\x30\x00", 8); *(uint64_t*)0x20324ff0 = (uint64_t)0x20918ff4; *(uint64_t*)0x20324ff8 = (uint64_t)0x20257000; memcpy((void*)0x20918ff4, "\x2d\x70\x70\x70\x31\x76\x6d\x6e\x65\x74\x31\x00", 12); memcpy((void*)0x20257000, "\x70\x6b\x63\x73\x37\x5f\x74\x65\x73\x74\x00", 11); r[16] = syscall(__NR_execve, 0x20f8aff8ul, 0x20a7bfc8ul, 0x20324ff0ul); } int main() { loop(); return 0; }