ERROR::INODE-UPROBES
Section: Misc. Reference Manual Pages (7stap)
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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, 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
-
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)