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.
Bug 1263505 - Heavy program map usage can lead to a hang
Summary: Heavy program map usage can lead to a hang
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: autofs
Version: 6.7
Hardware: All
OS: Linux
high
medium
Target Milestone: rc
: ---
Assignee: Ian Kent
QA Contact: xiaoli feng
URL:
Whiteboard:
Depends On:
Blocks: 1263508 1268411
TreeView+ depends on / blocked
 
Reported: 2015-09-16 02:36 UTC by Ian Kent
Modified: 2016-05-11 00:51 UTC (History)
4 users (show)

Fixed In Version: autofs-5.0.5-120.el6
Doc Type: Bug Fix
Doc Text:
Cause: Changes made for bug 1160446 added a function call that was out of order and could introduce a deadlock in the process created to execute a program map. Consequence: This caused the program map to not be executed and the required mount to not be done as well as leaving stale process that can't complete. Fix: Move the out of order function call to the correct location in the program map execution module. Result: Program map executed, required mount attempted without leaving blocked stale processes.
Clone Of:
: 1263508 (view as bug list)
Environment:
Last Closed: 2016-05-11 00:51:30 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
Patch - fix out of order call in program map lookup (2.07 KB, patch)
2015-09-16 02:37 UTC, Ian Kent 		no flags Details | Diff
View All


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2016:0934 0 normal SHIPPED_LIVE autofs bug fix and enhancement update 2016-05-10 22:54:31 UTC

Description Ian Kent 2015-09-16 02:36:21 UTC 
Description of problem:

Due to a change to program map environment variable naming
that was included in RHEL-6.7 heavy program map usage can
lead to an automount(8) hang.

Version-Release number of selected component (if applicable):
autofs-5.0.5-113.

The problem was introduced in autofs revision 111.
Comment 1 Ian Kent 2015-09-16 02:37:15 UTC 
Created attachment 1073881 [details]
Patch - fix out of order call in program map lookup

Upstream fix, still needs to be back ported.
Comment 3 Ian Kent 2015-09-17 08:31:24 UTC 
As posted XuWang in the rhel-7 counterpart of this bug:

This topic include the detail info about this bug.

http://www.spinics.net/lists/autofs/msg01050.html
Comment 10 errata-xmlrpc 2016-05-11 00:51:30 UTC 
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-2016-0934.html
Note You need to log in before you can comment on or make changes to this bug.