Bug 218266 - kernel dm crypt: possible data corruption if running over md-raid5
kernel dm crypt: possible data corruption if running over md-raid5
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
medium Severity high
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Assigned To: Milan Broz
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2006-12-04 04:44 EST by Milan Broz
Modified: 2013-02-28 23:04 EST (History)
4 users (show)

See Also:
Fixed In Version: RHBA-2007-0304
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2007-05-08 00:21:44 EDT
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
RHEL4U4 patch (929 bytes, patch)
2006-12-04 11:24 EST, Milan Broz
no flags Details | Diff

  None (edit)
Description Milan Broz 2006-12-04 04:44:18 EST
Description of problem:

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

How reproducible:

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Additional info:
Comment 1 Milan Broz 2006-12-04 04:49:44 EST
yes, Ctrl+s works even with no decription filled :-)

Bug description here:

Recently found bug in dm-crypt:

Fix corruption issue with dm-crypt on top of software raid5. Cancelled
readahead bio's that report no error, just have BIO_UPTODATE cleared
were reported as successful reads to the higher layers (and leaving
random content in the buffer cache). 

Patch is on way to stable kernel, already fixed upstream (by another code change).
Comment 2 RHEL Product and Program Management 2006-12-04 05:05:45 EST
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release.  Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products.  This request is not yet committed for inclusion in an Update
Comment 3 Milan Broz 2006-12-04 11:24:01 EST
Created attachment 142744 [details]
RHEL4U4 patch

Attached equivalent RHEL patch from dmcrypt mailinglist.
Comment 5 Jason Baron 2006-12-13 14:22:45 EST
committed in stream U5 build 42.31. A test kernel with this patch is available
from http://people.redhat.com/~jbaron/rhel4/
Comment 6 Jay Turner 2006-12-18 10:02:53 EST
QE ack for RHEL4.5.
Comment 8 Mike Gahagan 2007-04-05 14:58:37 EDT
Fix is in the -52 kernel.
Comment 10 Red Hat Bugzilla 2007-05-08 00:21:45 EDT
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.


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