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bio_clone() critical kernel data corruption bug

 

 

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Lars.Ellenberg at linbit

Aug 5, 2005, 5:52 AM

Post #1 of 1 (1987 views)
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bio_clone() critical kernel data corruption bug

cc to drbd-announce
because of the possible severity of the problem.


/ 2005-08-05 14:19:28 +0200
\ Bernd Schubert:
> Hello,
>
> I just saw on the raid-list a rather critical bug that might be interesting
> for drbd as well:
>
> https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=164696
>
> There's also a bug fix from Andrew Morton:
>
> http://bugzilla.kernel.org/attachment.cgi?id=5394&action=view
>

thank you for the heads up.

according to http://lkml.org/lkml/2005/7/28/230
the bug was introduced in 2.6.11-rc2,
http://bugzilla.kernel.org/show_bug.cgi?id=4946
says it affects
>=2.6.11-rc2, >=2.6.10-ac10, >2.6.10-hardened-r3, 2.6.12-gentoo-

so anyone running something in that range should apply the patch asap!

don't let the version number of you rdistribution kernel trick you into
believing you are not affected: e.g. I just verified that the SuSE SLES9
kernel (which pretends it was 2.6.5) has a fix for this problem since 24
May 2005 (so it _was_ affected!).

so better go double check!

--
: Lars Ellenberg Tel +43-1-8178292-0 :
: LINBIT Information Technologies GmbH Fax +43-1-8178292-82 :
: Schoenbrunner Str. 244, A-1120 Vienna/Europe http://www.linbit.com :
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