linux-kernel - Re: [PATCH 2.6.19] ehca: bug fix: use wqe offset instead wqe address to determine pending work requests

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <200611221029.10077.hnguyen@linux.vnet.ibm.com>
Date:	Wed, 22 Nov 2006 10:29:09 +0100
From:	Hoang-Nam Nguyen <hnguyen@...ux.vnet.ibm.com>
To:	Roland Dreier <rdreier@...co.com>
Cc:	rolandd@...co.com, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org, openib-general@...nib.org,
	raisch@...ibm.com
Subject: Re: [PATCH 2.6.19] ehca: bug fix: use wqe offset instead wqe address to determine pending work requests

(2nd try, since I forgot to post this on the mailing list)
On Tuesday 21 November 2006 17:47, Roland Dreier wrote:
> Umm, it's really late to merge things for 2.6.19.  How severe is this
> bug?  Why has it not been found until now if it causing crashes?
We found this bug actually through a code review by random. Since
(un)fortunately the queue pages were layouted in order, we've not
seen it earlier. It's certainly a bug and can cause kernel panic 
if above observation is not met, probably in stress situation
of system. That means the "former" code accesses next page that 
it has not allocated.
Thanks
Nam
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/