Bug 1175394

Summary:	systemd-nspawn doesn't work on s390/s390x
Product:	[Fedora] Fedora	Reporter:	Ken Werner <ken>
Component:	systemd	Assignee:	Jan Synacek <jsynacek>
Status:	CLOSED ERRATA	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	20	CC:	johannbg, jsynacek, ken, lnykryn, msekleta, s, systemd-maint, vpavlin, zbyszek
Target Milestone:	---	Keywords:	Reopened
Target Release:	---
Hardware:	s390x
OS:	Linux
Whiteboard:
Fixed In Version:	systemd-208-29.fc20	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-01-14 23:57:16 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 Ken Werner 2014-12-17 16:04:23 UTC

Description of problem:
 It appears that systemd-nspawn doesn't work on s390/s390x. The clone() fails because the signature of the raw system call is slightly different on 390/s390x. Since the order of the first and second arguments is reversed it gets invoked with a bogus value of the child_stack pointer and segfaults. The corresponding patch has been accepted upstream:
 http://cgit.freedesktop.org/systemd/systemd/commit/?id=60e1651a31c9c0ed1caef1a63f5e3a87156b0b1e

Version-Release number of selected component (if applicable):
 systemd-216-12.fc21.s390x

How reproducible:
 always

Steps to Reproduce:
 systemd-nspawn -D mycontainer

Actual results:
 strace:
  clone(Process 1552 attached
  child_stack=0x2c020011, flags=)   = 1552
  [pid  1552] --- SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_errno=1224498, si_addr=0x2c020000} ---

Expected results:
 Spawning container mycontainer on /path/to/mycontainer.

Additional info:
  I think every s390x/s390 Fedora version that has systemd is affected. Fortunately it's easy to fix.

Comment 1 Ken Werner 2014-12-17 16:06:36 UTC

After rebuilding the systemd-216-12 package with the patch applied on s390x I'm able to successfully spawn a namespace container.

Comment 2 Fedora Update System 2014-12-19 09:38:38 UTC

systemd-216-13.fc21 has been submitted as an update for Fedora 21.
https://admin.fedoraproject.org/updates/systemd-216-13.fc21

Comment 3 Fedora Update System 2014-12-20 08:39:58 UTC

Package systemd-216-13.fc21:
* should fix your issue,
* was pushed to the Fedora 21 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing systemd-216-13.fc21'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2014-17330/systemd-216-13.fc21
then log in and leave karma (feedback).

Comment 4 Ken Werner 2014-12-20 15:59:46 UTC

Yep, systemd-nspawn of systemd-216-13.fc21 works for me on s390x. Thanks!
Are there any plans on adding the patch to the systemd provided for Fedora 20 as well?

Comment 5 Jan Synacek 2015-01-05 13:03:07 UTC

Yes, I plan to do a big update with backported fixes, including this one. It may take a while, though.

Comment 6 Fedora Update System 2015-01-06 06:13:39 UTC

systemd-216-13.fc21 has been pushed to the Fedora 21 stable repository.  If problems still persist, please make note of it in this bug report.

Comment 7 Jan Synacek 2015-01-06 12:51:25 UTC

F20 fix:
http://pkgs.fedoraproject.org/cgit/systemd.git/commit/?h=f20&id=e0c0dfb92028b2139f8bbf9da048e0e05089ea64

Comment 8 Fedora Update System 2015-01-06 13:51:49 UTC

systemd-208-29.fc20 has been submitted as an update for Fedora 20.
https://admin.fedoraproject.org/updates/systemd-208-29.fc20

Comment 9 Fedora Update System 2015-01-07 01:24:55 UTC

Package systemd-208-29.fc20:
* should fix your issue,
* was pushed to the Fedora 20 testing repository,
* should be available at your local mirror within two days.
Update it with:
# su -c 'yum update --enablerepo=updates-testing systemd-208-29.fc20'
as soon as you are able to.
Please go to the following url:
https://admin.fedoraproject.org/updates/FEDORA-2015-0254/systemd-208-29.fc20
then log in and leave karma (feedback).

Comment 10 Fedora Update System 2015-01-14 23:57:16 UTC

systemd-208-29.fc20 has been pushed to the Fedora 20 stable repository.  If problems still persist, please make note of it in this bug report.