Bug 240752 - kernel dm io: panic on large request
kernel dm io: panic on large request
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: kernel (Show other bugs)
4.5
All Linux
high Severity high
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Assigned To: Milan Broz
Martin Jenner
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Depends On:
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Reported: 2007-05-21 09:39 EDT by Milan Broz
Modified: 2013-02-28 23:05 EST (History)
5 users (show)

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Fixed In Version: RHBA-2007-0791
Doc Type: Bug Fix
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Last Closed: 2007-11-15 11:27:26 EST
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Description Milan Broz 2007-05-21 09:39:34 EDT
+++ This bug was initially created as a clone of Bug #240751 +++
RHEL 4.6. clone, reproducer script in bug 240751

Kernel will panic when creating ~6TB mirror because bio_alloc_bioset() will
return NULL if 'num_vecs' is too large.

Patch upstream
http://www.kernel.org/pub/linux/kernel/people/agk/patches/2.6/editing/dm-io-fix-panic-on-large-request.patch
Comment 1 RHEL Product and Program Management 2007-05-21 10:06:50 EDT
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
release.
Comment 4 Jason Baron 2007-07-03 18:50:52 EDT
committed in stream U6 build 55.16. A test kernel with this patch is available
from http://people.redhat.com/~jbaron/rhel4/
Comment 7 errata-xmlrpc 2007-11-15 11:27:26 EST
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.

http://rhn.redhat.com/errata/RHBA-2007-0791.html

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