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, 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  mem‐
              ory  address  space.   The  new inode-uprobes does not have this
              capability.



SEE ALSO
       stap(1),
       http://kernelnewbies.org/Linux3.5,
       http://sourceware.org/systemtap/wiki/utrace,
       error::reporting(7stap)



                                                   ERROR::INODE-UPROBES(7stap)