Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.

Bug 1328490

Summary:	sadc can fwd SIGINT to init process and cause reboot
Product:	Red Hat Enterprise Linux 7	Reporter:	Filip Krska <fkrska>
Component:	sysstat	Assignee:	Peter Schiffer <pschiffe>
Status:	CLOSED ERRATA	QA Contact:	Branislav Náter <bnater>
Severity:	high	Docs Contact:	Milan Navratil <mnavrati>
Priority:	high
Version:	7.2	CC:	bnater, isenfeld, mnavrati, pdwyer, pschiffe, sbandyop, yozone
Target Milestone:	rc	Keywords:	EasyFix, Patch, Reproducer, Upstream
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:	The system is no longer rebooted unexpectedly due to SIGINT passed by "sadc" Due to a race condition, the "sadc" command sometimes passed the SIGINT signal to the init process. As a consequence, the system could be unexpectedly rebooted. This update adds a verification that the SIGINT signal is not sent to the init process. As a result, the system is no longer rebooted unexpectedly.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2016-11-04 03:48:04 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:

Description Filip Krska 2016-04-19 13:50:01 UTC

Description of problem:

Due to race condition sadc can pass SIGINT to init process and cause unexpected reboot.

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

sysstat-10.1.5-7.el7.x86_64


How reproducible:

Easily


Steps to Reproduce:
1. create script

# cat /tmp/sadc_loop.sh 
while true;do
  sar 10 2 -u -P ALL -r -n DEV
done

2. execute

# /tmp/sadc_loop.sh

3. press ^C often


Actual results:

ctrl-alt-del.target is invoked soon

Expected results:

No signal is passed to init process, no reboot can be invoked.

Additional info:

Upstream issue, patch candidate:

https://github.com/sysstat/sysstat/issues/33

https://github.com/sysstat/sysstat/commit/c3de69658006af0e0e3b7746e8646b8b4cdd2860

Comment 5 Branislav Náter 2016-08-29 13:31:06 UTC

Reproduced on sysstat-10.1.5-7.el7, system was rebooted after pressing ctrl+c.
Verified on sysstat-10.1.5-11.el7. No reboot was invoked by pressing ctrl+c several times.

Comment 11 errata-xmlrpc 2016-11-04 03:48:04 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://rhn.redhat.com/errata/RHBA-2016-2327.html