ERROR::INODE-UPROBES(7stap)

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

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
    process.function().return probes require "return-probes" or "uretprobes" functionality, that has not been implemented yet in the kernel. Until it is re-added, consider using process.statement() 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.

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