[Bug tapsets/15219] syscall.exp failures on RHEL5, RHEL6, and rawhide

[dsmith at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=15219

--- Comment #5 from David Smith <dsmith at redhat dot com> ---
Created attachment 7057
  --> http://sourceware.org/bugzilla/attachment.cgi?id=7057&action=edit
beta patch

Here's a beta patch, that adds a function to copy from the user or kernel
memory (it just uses the current memory segment) and makes a couple of the
functions in aux_syscalls.stp call the new function.

This patch doesn't fix all the issues in the tapset, I'm just looking to see if
the approach looks reasonable.

One thing to think about is which functions in aux_syscalls.stp do we modify?
Do we go ahead and modify them all (that use _stp_copy_from_user()) or do we
try to only do it where we know there are compat functions that switch to using
kernel memory?

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