RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Created attachment 957626 [details]
Patch based on fix proposed in upstream bug

Description of problem:

Customer is concern that during the port of one of their systems to RHEL6.4 they may see below issue..
http://lists.x.org/archives/xorg-devel/2013-October/038370.html (as referenced in http://stackoverflow.com/questions/23871516/xreply-terminates-app-with-xioerror)

Version-Release number of selected component (if applicable):
libX11-1.5.0-4.el6.i686
libX11-1.6.0-2.2.el6.i686

How reproducible:

Always

Steps to Reproduce:
1. Download reproducer code from upstream bug - https://bugs.freedesktop.org/show_bug.cgi?id=71338
2. Compile and keep it running on 32-bit rhel6 system


Actual results:

Below problem is observed after around 5 hours of run..

./xdraw 
ERROR Received a X IO error on display=8ffe008.
backtrace() returned 10 addresses
./xdraw() [0x8048853]
./xdraw() [0x80488f4]
/usr/lib/libX11.so.6(_XIOError+0x57) [0x61dc797]
/usr/lib/libX11.so.6(_XReply+0x3d5) [0x61db055]
/usr/lib/libX11.so.6() [0x61dd34f]
/usr/lib/libX11.so.6() [0x61dd465]
/usr/lib/libX11.so.6(XDrawLine+0x9b) [0x61b937b]
./xdraw() [0x8048b3b]
/lib/libc.so.6(__libc_start_main+0xe6) [0x192d26]
./xdraw() [0x80487a1]


Expected results:

Application should not crash and should continue running without any problem.


Additional info:

I have verified locally that the parch from below link helps to resolve issue.
http://patchwork.freedesktop.org/patch/16297/

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-2015-1358.html