ERROR::INODE-UPROBES(7stap)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 pre‐
clude 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.state‐
ment() 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 mem‐
ory address space. The new inode-uprobes does not have this
capability.
SEE ALSOstap(1), http://kernelnewbies.org/Linux_3.5, http://sourceware.org/sys‐
temtap/wiki/utrace, error::reporting(7stap)ERROR::INODE-UPROBES(7stap)