Bug 680981 - 100% CPU usage due to unhandled POLLNVAL
Summary: 100% CPU usage due to unhandled POLLNVAL
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: dbus
Version: 6.0
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: David King
QA Contact: Desktop QE
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-02-28 17:17 UTC by Enrico Scholz
Modified: 2017-12-06 10:17 UTC (History)
0 users

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2017-12-06 10:17:35 UTC
Target Upstream Version:


Attachments (Terms of Use)
more verbose strace log (17.30 KB, text/plain)
2011-02-28 17:17 UTC, Enrico Scholz
no flags Details


Links
System ID Private Priority Status Summary Last Updated
FreeDesktop.org 32992 0 None None None Never

Description Enrico Scholz 2011-02-28 17:17:08 UTC
Created attachment 481417 [details]
more verbose strace log

Description of problem:

The system dbus daemon consumes 100% CPU after a user logs in. strace shows fast

| poll([{fd=3, events=POLLIN}, ... {fd=41, events=POLLIN}, ...|], 36, 24525) = 2 ([{fd=41, revents=POLLNVAL}, {fd=43, revents=POLLNVAL}])
| poll([{fd=3, events=POLLIN}, ... {fd=41, events=POLLIN}, ...|], 36, 24525) = 2 ([{fd=41, revents=POLLNVAL}, {fd=43, revents=POLLNVAL}])

sequences. Before the first of these polls, strace shows that dbus
client closed connection (POLLHUP) and the dbus daemon closed the
sockets.


Version-Release number of selected component (if applicable):

dbus-1.2.24-3.el6.x86_64

Comment 2 RHEL Program Management 2011-02-28 17:38:18 UTC
This request was evaluated by Red Hat Product Management for
inclusion in the current release of Red Hat Enterprise Linux.
Because the affected component is not scheduled to be updated
in the current release, Red Hat is unfortunately unable to
address this request at this time. Red Hat invites you to
ask your support representative to propose this request, if
appropriate and relevant, in the next release of Red Hat
Enterprise Linux. If you would like it considered as an
exception in the current release, please ask your support
representative.

Comment 3 Colin Walters 2011-03-02 20:40:55 UTC
See https://bugs.freedesktop.org/show_bug.cgi?id=32992

Comment 5 Jan Kurik 2017-12-06 10:17:35 UTC
Red Hat Enterprise Linux 6 is in the Production 3 Phase. During the Production 3 Phase, Critical impact Security Advisories (RHSAs) and selected Urgent Priority Bug Fix Advisories (RHBAs) may be released as they become available.

The official life cycle policy can be reviewed here:

http://redhat.com/rhel/lifecycle

This issue does not meet the inclusion criteria for the Production 3 Phase and will be marked as CLOSED/WONTFIX. If this remains a critical requirement, please contact Red Hat Customer Support to request a re-evaluation of the issue, citing a clear business justification. Note that a strong business justification will be required for re-evaluation. Red Hat Customer Support can be contacted via the Red Hat Customer Portal at the following URL:

https://access.redhat.com/


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