Bug 831158

Summary: dm-crypt: Fix possible mempool deadlock
Product: Red Hat Enterprise Linux 6 Reporter: Milan Broz <mbroz>
Component: kernelAssignee: Mike Snitzer <msnitzer>
Status: CLOSED ERRATA QA Contact: XiaoNi <xni>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 6.3CC: agk, fge, lnovich, msnitzer, pvrabec, qcai, xiaoli
Target Milestone: rc   
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: kernel-2.6.32-391.el6 Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-11-21 13:10:59 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:
Bug Depends On:    
Bug Blocks: 843829    
Attachments:
Description Flags
Proposed patch none

Description Milan Broz 2012-06-12 10:46:34 UTC 
Description of problem:

There can be a deadlock situation when more processes allocates bio clone in dm-crypt

Fix is backporting  this patch
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=aeb2deae2660a1773c83d3c6e9e6575daa3855d6

Version-Release number of selected component (if applicable):
All 6.x kernels.

(There is no known reproduce for this issue.)
Comment 1 RHEL Program Management 2012-06-27 13:49:50 UTC 
This request was evaluated by Red Hat Product Management for
inclusion in a Red Hat Enterprise Linux release.  Product
Management has requested further review of this request by
Red Hat Engineering, for potential inclusion in a Red Hat
Enterprise Linux release for currently deployed products.
This request is not yet committed for inclusion in a release.
Comment 5 Milan Broz 2013-02-08 12:08:10 UTC 
Created attachment 695035 [details]
Proposed patch

Proposed patch.
Comment 8 RHEL Program Management 2013-04-12 02:21:32 UTC 
This request was evaluated by Red Hat Product Management for
inclusion in a Red Hat Enterprise Linux release.  Product
Management has requested further review of this request by
Red Hat Engineering, for potential inclusion in a Red Hat
Enterprise Linux release for currently deployed products.
This request is not yet committed for inclusion in a release.
Comment 12 Jarod Wilson 2013-06-20 17:55:29 UTC 
Patch(es) available on kernel-2.6.32-391.el6
Comment 16 XiaoNi 2013-10-28 05:57:19 UTC 
Hi All

   I have checked the patch in 2.6.32-425 and it's already in it. Because there is no reproducer, so set SanityOnly.

Thanks
Xiao
Comment 17 errata-xmlrpc 2013-11-21 13:10:59 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.

http://rhn.redhat.com/errata/RHSA-2013-1645.html