Created attachment 126484 [details]
Code to reproduce the behavior

Created attachment 126485 [details]
Proposed patch from Mike O'Connor <mjo.org>

This is not my area of expertise and actually this is all the information I got.
From the bug reports for RHEL3 and RHEL4, I realized that this will maybe not be
fixed, because of the ABI breakage. It is fine with me if you close the bug, but
at least someone with the right knowledge looked at it. Thanks.

Ok, I found a testcase in bz 170261.  ptrace() attach fails on derry.  I think
it' safe to close this as notabug.

# ./exectracedloser
PTRACE_SETOPTIONS: Input/output error
ptrace on leader: Operation not permitted
waitpid: No child processes
main thread 31843 status 0
idler thread 31844 status 137f
PTRACE_SETOPTIONS: Input/output error
trying exec
hello