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Bug 1677918

Summary:	Cannot disable "Detaching after fork from child process" message
Product:	Red Hat Enterprise Linux 7	Reporter:	Tavis Ormandy <taviso>
Component:	gdb	Assignee:	Keith Seitz <keiths>
Status:	CLOSED ERRATA	QA Contact:	Michal Kolar <mkolar>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	7.7-Alt	CC:	bgollahe, dsmith, gdb-bugs, mcermak, ohudlick, sergiodj, taviso
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	gdb-7.6.1-116.el7	Doc Type:	No Doc Update
Doc Text:	If this bug requires documentation, please select an appropriate Doc Type value.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-03-31 19:09:11 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:	1710255

Description Tavis Ormandy 2019-02-16 20:39:37 UTC

Description of problem:

The patch added in bug 235197 means that gdb will always print "Detaching after fork from child process", and there is no way to disable that message. That makes it basically impossible to debug programs that spawn a lot of processes  (e.g. build tools, testcase minimizers, etc), because the console is just spammed with messages and you can never read any text being displayed.

Comment 1 Tavis Ormandy 2019-02-16 20:43:47 UTC

Note that in mainline gdb, you can do `set print inferior-events off`

Comment 3 Keith Seitz 2019-02-20 19:45:27 UTC

The problem with gdb-7.6.1-XXX.el7 is that mainline gdb
has more places where the setting for "print inferior-events" is
checked.

Is using DTS an option? For example, devtoolset-8-gdb is based on
gdb 8.2.

Comment 9 Keith Seitz 2019-08-08 20:41:29 UTC

I've backported the "set print inferior-events" patch mentioned above to -116.el7.
This should not require any additional documentation; it's just a bug fix.

Comment 11 Michal Kolar 2019-11-22 12:44:36 UTC

Reproduced against gdb-7.6.1-115.el7 and verified against gdb-7.6.1-117.el7.

Comment 13 errata-xmlrpc 2020-03-31 19:09:11 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/RHBA-2020:0993