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Bug 2156554

Summary:	[rngd-9.2] rngd fails during start with * stack smashing detected *
Product:	Red Hat Enterprise Linux 9	Reporter:	Vladis Dronov <vdronov>
Component:	rng-tools	Assignee:	Vladis Dronov <vdronov>
Status:	CLOSED ERRATA	QA Contact:	Vilém Maršík <vmarsik>
Severity:	high	Docs Contact:
Priority:	high
Version:	9.2	CC:	asosedki, core-kernel-mgr, myllynen, vmarsik, vpolasek
Target Milestone:	rc	Keywords:	Triaged
Target Release:	9.2	Flags:	pm-rhel: mirror+
Hardware:	s390x
OS:	Linux
Whiteboard:
Fixed In Version:	rng-tools-6.15-3.el9	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-05-09 08:15:43 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 Vladis Dronov 2022-12-27 14:05:21 UTC

update rng-tools to 6.15 @ cb8cc624. the previous bugzilla is bz2124605.

the related bugzilla (fixing a crash) is bz2140043.

Comment 11 Vilém Maršík 2023-01-09 22:40:23 UTC

Yes, but first will test it a little to check that rngd still works.

Comment 12 Alexander Sosedkin 2023-01-10 16:45:59 UTC

*** Bug 2154804 has been marked as a duplicate of this bug. ***

Comment 13 Vilém Maršík 2023-01-25 23:53:11 UTC

Reproduced with jitterentropy-3.4.1-1.el9.s390x and rng-tools-6.15-2.el9.s390x, verified with rng-tools-6.15-3.el9.s390x.rpm and jitterentropy-3.4.1-2.el9.s390x.rpm :

# uname -r
5.14.0-242.el9.s390x
# cat /etc/redhat-release 
Red Hat Enterprise Linux release 9.2 Beta (Plow)
# dnf install rng-tools
(...)
Installed:
  jitterentropy-3.4.1-1.el9.s390x
  rng-tools-6.15-2.el9.s390x
Complete!
# systemctl start rngd
# grep rngd /var/log/messages
Jan 25 12:23:23 ibm-z-536 dracut[1286]: dracut module 'rngd' will not be installed, because command 'rngd' could not be found!
Jan 25 12:23:24 ibm-z-536 dracut[1286]: dracut module 'rngd' will not be installed, because command 'rngd' could not be found!
Jan 25 18:42:41 ibm-z-536 rngd[79567]: Disabling 7: PKCS11 Entropy generator (pkcs11)
Jan 25 18:42:41 ibm-z-536 rngd[79567]: Disabling 5: NIST Network Entropy Beacon (nist)
Jan 25 18:42:41 ibm-z-536 rngd[79567]: Disabling 9: Qrypt quantum entropy beacon (qrypt)
Jan 25 18:42:41 ibm-z-536 rngd[79567]: Initializing available sources
Jan 25 18:42:41 ibm-z-536 rngd[79567]: [hwrng ]: Initialized
Jan 25 18:42:41 ibm-z-536 rngd[79567]: [jitter]: JITTER timeout set to 5 sec
Jan 25 18:42:41 ibm-z-536 rngd[79567]: *** stack smashing detected ***: terminated
Jan 25 18:42:41 ibm-z-536 systemd-coredump[79569]: Resource limits disable core dumping for process 79567 (rngd).
Jan 25 18:42:41 ibm-z-536 systemd-coredump[79569]: Process 79567 (rngd) of user 0 dumped core.
Jan 25 18:42:41 ibm-z-536 systemd[1]: rngd.service: Main process exited, code=dumped, status=6/ABRT
Jan 25 18:42:41 ibm-z-536 systemd[1]: rngd.service: Failed with result 'core-dump'.

# rpm -U rng-tools-6.15-3.el9.s390x.rpm jitterentropy-3.4.1-2.el9.s390x.rpm
# systemctl stop rngd
# systemctl start rngd
# systemctl status rngd
● rngd.service - Hardware RNG Entropy Gatherer Daemon
     Loaded: loaded (/usr/lib/systemd/system/rngd.service; enabled; preset: enabled)
     Active: active (running) since Wed 2023-01-25 18:46:39 EST; 5s ago
   Main PID: 79888 (rngd)
      Tasks: 3 (limit: 36540)
     Memory: 1.5M
        CPU: 10.715s
     CGroup: /system.slice/rngd.service
             └─79888 /usr/sbin/rngd -f --fill-watermark=0 -x pkcs11 -x nist -x qrypt -D daemon:daemon

Jan 25 18:46:39 ibm-z-536.lab.eng.rdu2.redhat.com rngd[79888]: Disabling 7: PKCS11 Entropy generator (pkcs11)
Jan 25 18:46:39 ibm-z-536.lab.eng.rdu2.redhat.com rngd[79888]: Disabling 5: NIST Network Entropy Beacon (nist)
Jan 25 18:46:39 ibm-z-536.lab.eng.rdu2.redhat.com rngd[79888]: Disabling 9: Qrypt quantum entropy beacon (qrypt)
Jan 25 18:46:39 ibm-z-536.lab.eng.rdu2.redhat.com rngd[79888]: Initializing available sources
Jan 25 18:46:39 ibm-z-536.lab.eng.rdu2.redhat.com rngd[79888]: [hwrng ]: Initialized
Jan 25 18:46:39 ibm-z-536.lab.eng.rdu2.redhat.com rngd[79888]: [jitter]: JITTER timeout set to 5 sec
Jan 25 18:46:39 ibm-z-536.lab.eng.rdu2.redhat.com rngd[79888]: [jitter]: Initializing AES buffer
Jan 25 18:46:42 ibm-z-536.lab.eng.rdu2.redhat.com rngd[79888]: [jitter]: Enabling JITTER rng support
Jan 25 18:46:42 ibm-z-536.lab.eng.rdu2.redhat.com rngd[79888]: [jitter]: Initialized
Jan 25 18:46:42 ibm-z-536.lab.eng.rdu2.redhat.com rngd[79888]: Process privileges have been dropped to 2:2

Comment 15 errata-xmlrpc 2023-05-09 08:15:43 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 (rng-tools bug fix and enhancement update), 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-2023:2473