FUNCTION::USER\_UINT8(3stap) String and data retrieving fun FUNCTION::USER\_UINT8(3stap)

# [NAME](#NAME)

function::user\_uint8\_error - Retrieves a unsigned 8-bit integer value stored in user space

# [SYNOPSIS](#SYNOPSIS)

```


    user_uint8_error:long(addr:long)
```

# [ARGUMENTS](#ARGUMENTS)

*addr*

the user space address to retrieve the unsigned 8-bit integer from

# [DESCRIPTION](#DESCRIPTION)

Returns the unsigned 8-bit integer value from a given user space address. If the user space data is not accessible, an error will occur.

# [SEE ALSO0](#SEE_ALSO0)

[*tapset::uconversions*(3stap)](/man/enterprise-packages/systemtap/tapset::uconversions.3stap)

September 2026 SystemTap Tapset Reference Ver

---

Document: function::user_uint8_error(3stap) from systemtap 5.6-r0 (Chainguard OS)
Source: https://sourceware.org/git/systemtap.git