Bug 1286471

Summary:	Freeze after putting up a GRE device with ip
Product:	[Fedora] Fedora	Reporter:	Jaroslav Henner <jhenner>
Component:	kernel	Assignee:	Kernel Maintainer List <kernel-maint>
Status:	CLOSED DUPLICATE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	22	CC:	gansalmon, itamar, jforbes, jonathan, kernel-maint, madhu.chinakonda, mchehab
Target Milestone:	---
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2015-11-30 12:45:28 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 Jaroslav Henner 2015-11-29 21:14:25 UTC

Description of problem:
When creating a tunnel, the system freezes.

Version-Release number of selected component (if applicable):
Linux jezevec 4.2.5-201.fc22.x86_64 #1 SMP Wed Oct 28 20:00:23 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
iproute-3.16.0-4.fc22.x86_64
kernel-4.1.8-200.fc22.x86_64
kernel-4.2.3-200.fc22.x86_64
kernel-4.2.5-201.fc22.x86_64

How reproducible:
always

Steps to Reproduce:
$ sudo ip tun add tun0 mode gre remote `resolveip -s x.y.z.redhat.com` local A.B.C.D  ttl 255
$ sudo ip a a 172.25.1.2/32 dev tun0
$ sudo ip l s dev tun0 up


Actual results:
Freeze, nothing in logs.


Expected results:
tunnel is doing it's tunneling stuff


Additional info:

Comment 1 Jaroslav Henner 2015-11-29 21:22:26 UTC

I was able to reproduce two or three times in row and now I cannot.

Comment 2 Justin M. Forbes 2015-11-30 12:45:28 UTC


*** This bug has been marked as a duplicate of bug 1272571 ***

Comment 3 Jaroslav Henner 2015-11-30 16:33:25 UTC

Reproduced on

Linux jezevec 4.2.6-200.fc22.x86_64 #1 SMP Tue Nov 10 16:45:19 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

again, but then It worked fine. I am still unsure what is different between the reproducing and not-reproducing steps I do.