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+++ This bug was initially created as a clone of Bug #1129569 +++

Description of problem:
Getting a segmentation fault when trying to attach to a process on ppc64le. Only happens when attaching, running '$ strace cmd' works fine.

Version-Release number of selected component:
strace-4.8-5.fc21

Additional info:
reporter:       libreport-2.2.3
backtrace_rating: 4
cmdline:        strace -p 3250
crash_function: init
executable:     /usr/bin/strace
kernel:         3.14.0-1.fc21.ppc64le
runlevel:       N 5
type:           CCpp
uid:            1002

Truncated backtrace:
Thread no. 1 (3 frames)
 #0 newoutf at strace.c:644
 #1 startup_attach at strace.c:976
 #2 init at strace.c:1836

The same happens on RHEL7 with strace-4.8-8.bs3.ppc64le

Created attachment 926382 [details]
strace-ptrace-prototype.patch

Upstream commit 03ef0b2665363adf6100bc4af479a14b5f17bc27 fixes the problem. Attaching the patch applicable to RHEL7 dist git.

Tests passed for strace-4.8-10.ael7b.ppc64le

Tested with the latest .el7 build - strace-4.8-10.el7.ppc64le --> VERIFIED.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2145.html