Bug 1757325

Summary:	perf top -p PID does not show anything
Product:	Red Hat Enterprise Linux 7	Reporter:	Michael Petlan <mpetlan>
Component:	kernel	Assignee:	Michael Petlan <mpetlan>
kernel sub component:	Perf	QA Contact:	Ziqian SUN (Zamir) <zsun>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	unspecified
Priority:	urgent	CC:	acme, amike, brclark, dhoward, gleventhal, jolsa, jwright, kernel-general-qe, lilu, mmilgram, mstowell, pdwyer, tborcin, zsun
Version:	7.8	Keywords:	Regression, ZStream
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	kernel-3.10.0-1101.el7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	1793581 (view as bug list)		Environment:
Last Closed:	2020-03-31 19:33:36 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	1710953, 1793581

Description Michael Petlan 2019-10-01 08:47:07 UTC

Description of problem:

Gregg Leventhal has found that `perf top -p $PID` does not work in RHEL-7.

Version-Release number of selected component (if applicable):
recent RHEL-7 perf, e.g. 3.10.0-1090.el7

How reproducible:
100%

Steps to Reproduce:
yes > /dev/null &
perf top -p $!

Actual results:

NOTHING

Expected results:

perf top works

Comment 6 Jan Stancek 2019-10-07 07:11:50 UTC

Patch(es) committed on kernel-3.10.0-1101.el7

Comment 9 Michael Petlan 2019-10-08 12:05:09 UTC

*** Bug 1757947 has been marked as a duplicate of this bug. ***

Comment 10 Gregg Leventhal 2019-10-08 12:12:43 UTC

RHEL 7.8 is likely months away based on the cycle of previous releases.  Is there any change for a back-ported fix being released sooner than 7.8?  I'd like to get an estimated date so that I can find out if my employees are willing to wait for the upstream fix, or if I'll need to patch this in my environment.

Comment 12 Gregg Leventhal 2019-10-14 16:25:59 UTC

I just wanted to follow up and see if I can possibly get an ETA for 7.8 or the possibility of a back-port resolving this issue before then please.

Comment 14 Gregg Leventhal 2019-10-25 14:04:09 UTC

I ended up resolving this on my own for 7.7, so feel free to close (as far as I am concerned WRT to backporting to 7.7).

Comment 23 errata-xmlrpc 2020-03-31 19:33:36 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://access.redhat.com/errata/RHSA-2020:1016