ERROR::INODE-UPROBES(7stap) ERROR::INODE-UPROBES(7stap)

# [NAME](#NAME)

error::inode-uprobes - limitations of inode-uprobes

# [DESCRIPTION](#DESCRIPTION)

The uprobes kernel facility introduced in Linux 3.5 aims to supplant the earlier out-of-tree utrace patch to enable user-space probing. There have been some functional limitations in inode-uprobes that preclude some systemtap constructs. Over time, we hope these regressions will be corrected.

[function.return probes](#function.return)

*process.function().return* probes require "return-probes" or "uretprobes" functionality, which was not implemented in the builtin inode-uprobes until kernel 3.10. If you cannot upgrade your kernel, consider using *process.statement()* probes placed on source line numbers at the function's return statements.

[function.statement.absolute probes](#function.statement.absolute)

In utrace-equipped kernels, systemtap made it possible to address probes by literal addresses in the process virtual memory address space. The new inode-uprobes does not have this capability.

# [SEE ALSO](#SEE_ALSO)

```
stap(1),
http://kernelnewbies.org/Linux_3.5,
http://sourceware.org/systemtap/wiki/utrace,
error::reporting(7stap)
```

---

Document: error::inode-uprobes(7stap) from systemtap 5.6-r1 (Chainguard OS)
Source: https://sourceware.org/git/systemtap.git