// https://syzkaller.appspot.com/bug?id=0e8afad8624ff5aedfac63f5562f96baf934ea2b // autogenerated by syzkaller (http://github.com/google/syzkaller) #define _GNU_SOURCE #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[11]; void loop() { memset(r, -1, sizeof(r)); r[0] = syscall(__NR_mmap, 0x20000000ul, 0x2000ul, 0x3ul, 0x32ul, 0xfffffffffffffffful, 0x0ul); memcpy((void*)0x20000ff1, "\x2f\x64\x65\x76\x2f\x64\x72\x69\x2f\x63\x61\x72\x64\x23\x00", 15); r[2] = syz_open_dev(0x20000ff1ul, 0x0ul, 0x0ul); *(uint32_t*)0x20000ff4 = (uint32_t)0x0; *(uint32_t*)0x20000ff8 = (uint32_t)0x80000; *(uint32_t*)0x20000ffc = r[2]; r[6] = syscall(__NR_ioctl, r[2], 0xc00c642dul, 0x20000ff4ul); if (r[6] != -1) r[7] = *(uint32_t*)0x20000ff4; *(uint32_t*)0x20001000 = r[7]; *(uint32_t*)0x20001004 = (uint32_t)0x0; r[10] = syscall(__NR_ioctl, r[2], 0x40086409ul, 0x20001000ul); } int main() { loop(); return 0; }