Bug 219615 - device mapper: possible overwriting of extra slot in bi_io_vec
device mapper: possible overwriting of extra slot in bi_io_vec
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel (Show other bugs)
All Linux
medium Severity medium
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Assigned To: Milan Broz
Brian Brock
Depends On:
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Reported: 2006-12-14 09:29 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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Last Closed: 2007-05-08 00:30:19 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Milan Broz 2006-12-14 09:29:49 EST
The existing code allocates an extra slot in bi_io_vec[] and uses it to
store the region number.
DM need hide the extra slot from bio_add_page() so the region number
can't get overwritten.
Comment 1 RHEL Product and Program Management 2006-12-14 09:48:16 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 Jay Turner 2007-01-02 08:50:00 EST
QE ack for RHEL4.5.
Comment 4 Jason Baron 2007-01-02 13:48:19 EST
committed in stream U5 build 42.36. A test kernel with this patch is available
from http://people.redhat.com/~jbaron/rhel4/
Comment 7 Red Hat Bugzilla 2007-05-08 00:30:19 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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