Bug 698062

Summary:	Error inserting dccp module (No buffer space available)
Product:	Red Hat Enterprise Linux 6	Reporter:	Liang Zheng <lzheng>
Component:	kernel	Assignee:	Neil Horman <nhorman>
Status:	CLOSED DUPLICATE	QA Contact:	Network QE <network-qe>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	6.1	CC:	dtian, hjia, kzhang, nhorman, tgraf
Target Milestone:	rc	Keywords:	TestBlocker
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2011-05-06 12:36:04 UTC	Type:	---
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:	682958

Description Liang Zheng 2011-04-20 04:32:15 UTC

Description of problem:
Can not modprobe dccp.


Version-Release number of selected component (if applicable):
rhel 6.1 
rhel 5.7

How reproducible:
always

Steps to Reproduce:
1.modprobe -r dccp
2.modprobe dccp
  
Actual results:
[root@dhcp-65-10 dccp-cs-0.01]# modprobe  dccp
FATAL: Error inserting dccp (/lib/modules/2.6.32-128.el6.i686/kernel/net/dccp/dccp.ko): No buffer space available

Expected results:
modprobe dccp works


Additional info:
[root@dhcp-65-10 dccp-cs-0.01]# dmesg 
kmem_cache_create: duplicate cache cci
Pid: 19164, comm: modprobe Not tainted 2.6.32-128.el6.i686 #1
Call Trace:
 [<c051b77e>] ? kmem_cache_create+0x4ae/0x500
 [<f7f600d5>] ? dccp_init+0x0/0x30c [dccp]
 [<f7eaa10e>] ? ccid_kmem_cache_create+0x3e/0x50 [dccp]
 [<f7f60067>] ? ccid_initialize_builtins+0x67/0xd5 [dccp]
 [<f7f602f9>] ? dccp_init+0x224/0x30c [dccp]
 [<c040303f>] ? do_one_initcall+0x2f/0x1c0
 [<c048f7e4>] ? sys_init_module+0xb4/0x220
 [<c08264da>] ? do_page_fault+0x2a/0x90
 [<c0409adf>] ? sysenter_do_call+0x12/0x28

Comment 1 Liang Zheng 2011-04-20 04:35:23 UTC

Upstream patch:
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=8ed030dd0aa400d18c63861c2c6deb7c38f4edde

Comment 2 RHEL Program Management 2011-04-20 06:01:15 UTC

Since RHEL 6.1 External Beta has begun, and this bug remains
unresolved, it has been rejected as it is not proposed as
exception or blocker.

Red Hat invites you to ask your support representative to
propose this request, if appropriate and relevant, in the
next release of Red Hat Enterprise Linux.

Comment 3 Liang Zheng 2011-04-20 06:34:44 UTC

I believe this bug blocks https://bugzilla.redhat.com/show_bug.cgi?id=682958
so my suggestion is to set it rhel‑6.1.0+

Comment 4 Dayong Tian 2011-05-05 01:26:30 UTC

There is a regression with the upstream patch in comment 1,  kernel panic appears when remove dccp_probe module, please see bug 702183 for detail.

Comment 5 Neil Horman 2011-05-06 12:36:04 UTC

I'm going to roll this fix in with bz 702183.  I realize they're not really dups, but the fixes really go hand and hand

*** This bug has been marked as a duplicate of bug 702183 ***