Bug 1325870 – dbus-daemon fails to close correct file descriptors

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Bug 1325870 - dbus-daemon fails to close correct file descriptors

Summary:	dbus-daemon fails to close correct file descriptors

Status:	CLOSED ERRATA

Aliases:	None

Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	dbus (Show other bugs)
Sub Component:
Version:	7.2
Hardware:	x86_64 Linux

Priority	high Severity high
Target Milestone:	rc
Target Release:	---
Assigned To:	David King
QA Contact:	Desktop QE
Docs Contact:	Milan Navratil

URL:
Whiteboard:
Keywords:	Regression, ZStream

Depends On:
Blocks:	1203710 1348830 1364088
	Show dependency tree / graph

Reported:	2016-04-11 08:06 EDT by Siteshwar Vashisht
Modified:	2018-03-13 09:00 EDT (History)
CC List:	15 users (show)

See Also:
Fixed In Version:	dbus-1.6.12-14.el7
Doc Type:	Release Note
Doc Text:	The dbus-daemon service no longer becomes unresponsive due to leaking file descriptors Previously, the dbus-daemon service incorrectly handled multiple messages containing file descriptors if they were received in a short time period. As a consequence, dbus-daemon leaked file descriptors and became unresponsive. A patch has been applied to correctly handle multiple file descriptors from different messages inside dbus-daemon. As a result, dbus-daemon closes and passes file descriptors correctly and no longer becomes unresponsive in the described situation.
Story Points:	---
Clone Of:
Clones:	1348830 (view as bug list)
Environment:
Last Closed:	2016-11-04 02:41:05 EDT
Type:	Bug
Regression:	---
Mount Type:	---
Documentation:	---
CRM:
Verified Versions:
Category:	---
oVirt Team:	---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---

Attachments	(Terms of Use)
Add an attachment (proposed patch, testcase, etc.)

External Trackers
Tracker	ID	Priority	Status	Summary	Last Updated
Red Hat Knowledge Base (Solution)	2220531	None	None	None	2016-06-20 22:49 EDT
Red Hat Product Errata	RHBA-2016:2453	normal	SHIPPED_LIVE	dbus bug fix and enhancement update	2016-11-03 10:04:29 EDT

Groups: None (edit)

Description Siteshwar Vashisht 2016-04-11 08:06:28 EDT

Description of problem:
dbus-daemon fails to close correct file descriptors.

Version-Release number of selected component (if applicable):
dbus-1.6.12-11.el7.x86_64

How reproducible:
Always

Actual results:
'dbus-daemon: Failed to close file descriptor: Could not close fd' messages appear in journal logs


Expected results:
Correct file descriptors should be closed.

Additional info:

This is a known bug which was fixed through https://cgit.freedesktop.org/dbus/dbus/commit/?id=07f4c12efe3b9bd45d109bc5fbaf6d9dbf69d78e

Comment 3 neil 2016-05-03 15:58:49 EDT

We're hitting this bug often enough that dbus-daemon hits the open fd limit (2144 by default). Once this happens, dbus-daemon starts chewing through 100% CPU time of a core until dbus-daemon is restarted.

In a cluster of 8 machines with the same workload and same uptime we've observed a wide variance in the number of "leaked" fds per hour, ranging from ~0.42 fds/hour to 1.38 fds/hour. However, all machines are leaking fds over time, just at different rates.

Observed with dbus-1.6.12-13.el7.x86_64.

Comment 6 neil 2016-05-04 10:37:49 EDT

It would be ideal if this could be fixed in time for RHEL 7.3.

Comment 19 errata-xmlrpc 2016-11-04 02:41:05 EDT

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-2016-2453.html

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