Section: Misc. Reference Manual Pages (7stap)
error::inode-uprobes - limitations of inode-uprobes
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
- function.return probes
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
probes placed on source line numbers at the function's return statements.
- function.statement.absolute probes
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.