Bug 219615 - device mapper: possible overwriting of extra slot in bi_io_vec
Summary: device mapper: possible overwriting of extra slot in bi_io_vec
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel
Version: 4.4
Hardware: All
OS: Linux
Target Milestone: ---
: ---
Assignee: Milan Broz
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2006-12-14 14:29 UTC by Milan Broz
Modified: 2013-03-01 04:04 UTC (History)
4 users (show)

Clone Of:
Last Closed: 2007-05-08 04:30:19 UTC

Attachments (Terms of Use)

External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2007:0304 normal SHIPPED_LIVE Updated kernel packages available for Red Hat Enterprise Linux 4 Update 5 2007-04-28 18:58:50 UTC

Description Milan Broz 2006-12-14 14:29:49 UTC
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 14:48:16 UTC
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 13:50:00 UTC
QE ack for RHEL4.5.

Comment 4 Jason Baron 2007-01-02 18:48:19 UTC
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 04:30:19 UTC
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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