906457 – pmap doesn't produce any output

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Bug 906457 - pmap doesn't produce any output

Summary: pmap doesn't produce any output

Keywords:
Status:	CLOSED CURRENTRELEASE
Alias:	None
Product:	Red Hat Enterprise Linux 7
Classification:	Red Hat
Component:	procps-ng
Sub Component:
Version:	7.0
Hardware:	Unspecified
OS:	Unspecified
Priority:	medium
Severity:	medium
Target Milestone:	rc
Target Release:	---
Assignee:	Jaromír Cápík
QA Contact:	Branislav Náter
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+	depends on / blocked

Reported:	2013-01-31 16:41 UTC by Branislav Náter
Modified:	2016-02-01 01:57 UTC (History)
CC List:	1 user (show)
Fixed In Version:	procps-ng-3.3.6-4.el7
Doc Type:	Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed:	2014-06-13 11:39:47 UTC
Target Upstream Version:
Embargoed:

Attachments	(Terms of Use)

Description Branislav Náter 2013-01-31 16:41:49 UTC

Description of problem:
Issue occures only on ppc64 and s390x platfrom. pmap doesn't produce any output and exit with return code 42. pmap behaves as expected on x86_64.

Version-Release number of selected component (if applicable):
procps-ng-3.3.6-2.el7

How reproducible:
always

Steps to Reproduce:
1. run "pmap $$"
  
Actual results:
no output, echo $? = 42

Expected results:
24496:   -bash
0000000000400000    872K r-x--  /usr/bin/bash
00000000006d9000      4K r----  /usr/bin/bash
00000000006da000     36K rw---  /usr/bin/bash
00000000006e3000     24K rw---    [ anon ]
00000000008e2000     36K rw---  /usr/bin/bash
0000000000b22000    528K rw---    [ anon ]
<snip>

Additional info:
pmap works on all platforms in previous version procps-ng-3.3.3-2.20120807git

Comment 2 Jaromír Cápík 2013-02-04 13:03:03 UTC

Hi ... it's very probably caused by a kernel update. I remember we recently received a patch for a new kernel field breaking the pmap output. Let me check that.

Comment 3 Jaromír Cápík 2013-02-04 16:45:54 UTC

Unfortunatelly it's caused by changes in procps-ng. The issue was introduced with changing the type of the pidlist variable from unsigned* to unsigned long*.

Comment 4 Jaromír Cápík 2013-02-04 17:17:48 UTC

I found the reason ...

unsigned size = 4
unsigned long size = 8
pid_t size = 4

The pidlist is passed to openproc. 
Openproc uses pid_t type, but the pidlist in pmap is defined as unsigned long* now. 

The pidlist type needs to be changed to pid_t *.

Comment 5 Jaromír Cápík 2013-02-05 15:18:36 UTC

Please, test the new release ... procps-ng-3.3.6-4.el7

https://brewweb.devel.redhat.com/taskinfo?taskID=5358711

Comment 6 Jaromír Cápík 2013-02-21 20:06:34 UTC

Please, postpone the tests. The whole pmap is currently being redesigned and will be available soon.

Comment 7 Jaromír Cápík 2013-11-01 18:59:35 UTC

NOTE: The redesigned pmap is available since 3.3.7 and it's already a part of the RHEL7.

Comment 8 Branislav Náter 2013-11-04 14:24:51 UTC

pmap from procps-ng-3.3.8-15.el7 now works correctly on all supported architectures.

# rpm -q procps-ng
procps-ng-3.3.8-14.el7.ppc64
# pmap $$
24227:   -bash
0000000010000000   1152K r-x-- bash
0000000010120000     64K r---- bash
0000000010130000     64K rw--- bash
0000000010140000     64K rw---   [ anon ]
000001000b830000    192K rw---   [ anon ]
<snip>

# rpm -q procps-ng
procps-ng-3.3.8-15.el7.s390x
# pmap $$
2426:   -bash
0000000080000000   1008K r-x-- bash
00000000800fc000      4K r---- bash
00000000800fd000     36K rw--- bash
0000000080106000     20K rw---   [ anon ]
00000000b82ff000    396K rw---   [ anon ]
000003fff6aa8000     56K r-x-- libnss_files-2.17.so
<snip>

Comment 9 Ludek Smid 2014-06-13 11:39:47 UTC

This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.

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