FUNCTION::UADDR(3stap) Context Functions FUNCTION::UADDR(3stap)

# [NAME](#NAME)

function::uaddr - User space address of current running task

# [SYNOPSIS](#SYNOPSIS)

```


    uaddr:long()
```

# [ARGUMENTS](#ARGUMENTS)

None

# [DESCRIPTION](#DESCRIPTION)

Returns the address in userspace that the current task was at when the probe occurred. When the current running task isn't a user space thread, or the address cannot be found, zero is returned. Can be used to see where the current task is combined with **usymname** or **usymdata**. Often the task will be in the VDSO where it entered the kernel.

# [SEE ALSO0](#SEE_ALSO0)

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

September 2026 SystemTap Tapset Reference Ver

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Document: function::uaddr(3stap) from systemtap 5.6-r1 (Chainguard OS)
Source: https://sourceware.org/git/systemtap.git