From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Manfred Spraul <manfred@colorfullife.com>
Cc: linux-kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: [BUG] slab debug vs. L1 alignement
Date: 16 Aug 2003 12:43:20 +0200 [thread overview]
Message-ID: <1061030600.582.121.camel@gaston> (raw)
In-Reply-To: <3F3E02EE.8080909@colorfullife.com>
> >
> Hmm. That means slab debugging did it's job: The driver contains the
> wrong assumption that all pointers are cache line aligned. Without slab
> debugging, this would result in rare data corruptions in O_DIRECT apps.
> With slab debugging on, it's exposed immediately.
As we discussed on IRC, I think SCSI host drivers (at least) can assume
beeing passed aligned buffers, if somebody don't agree, please speak
up ;) Christoph said that O_DIRECT has strict alignement rules too.
Ben.
next prev parent reply other threads:[~2003-08-16 10:44 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-08-15 21:50 [BUG] slab debug vs. L1 alignement Manfred Spraul
2003-08-15 23:41 ` Benjamin Herrenschmidt
2003-08-16 1:47 ` Manfred Spraul
2003-08-16 9:37 ` Benjamin Herrenschmidt
2003-08-16 10:09 ` Manfred Spraul
2003-08-16 10:43 ` Benjamin Herrenschmidt [this message]
2003-08-16 11:21 ` Kai Makisara
2003-08-16 11:36 ` Benjamin Herrenschmidt
2003-08-16 14:39 ` Kai Makisara
-- strict thread matches above, loose matches on Subject: below --
2003-08-17 17:27 James Bottomley
2003-08-18 20:29 ` Kai Makisara
2003-09-30 18:40 ` Manfred Spraul
[not found] <kUMe.2pd.9@gated-at.bofh.it>
[not found] ` <kWuz.41M.5@gated-at.bofh.it>
[not found] ` <kYwo.5Xr.1@gated-at.bofh.it>
[not found] ` <l5HD.4tl.21@gated-at.bofh.it>
[not found] ` <l6kd.53T.1@gated-at.bofh.it>
2003-08-16 12:00 ` Arnd Bergmann
2003-08-16 12:18 ` Manfred Spraul
2003-08-15 14:00 Benjamin Herrenschmidt
2003-08-15 18:51 ` Philippe Elie
2003-08-15 16:54 ` Benjamin Herrenschmidt
2003-08-15 21:16 ` Andrew Morton
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