From: LW@KARO-electronics.de (Lothar Waßmann)
To: linux-arm-kernel@lists.infradead.org
Subject: strange segfaults with CompactFlash in "true-ide" mode on PXA270
Date: Wed, 23 Jun 2010 17:24:15 +0200 [thread overview]
Message-ID: <19490.10015.10027.750374@ipc1.ka-ro> (raw)
In-Reply-To: <201006231706.33182.schindele@nentec.de>
Hi,
> we have a strange problem when booting from a Compact Flash card
> as root-device. In one of 10 cases while booting an application from
> root-filesystem dies with "Segmentation fault" without a visible error.
> After booting the same application runs hundred times without error.
> (we're talking about standard appl. like chat, pppd, hwclock and so on)
>
> For debugging purposes we put printk's in kernels IDE driver
> and the problem disappeared. But replacing the printk by a usleep
> or so (which is not a solution !) brings the problem back.
> It seems that the application received faulty data from CF.
> But how and why ?????????????????????????????
>
> We tested with a custom PXA270 board with a CompactFlash in
> "true ide" on processor bus driven by "generic ide / pata_platform"
> driver from linux-2.6.27.x.
> (by the way linux-2.6.20.x showed the same problem).
>
> Any ideas, hints, experiences, patches are very welcome :-)
> --------------------------------------------------------------
I guess that is the old cache problem that apparently was never really
fixed:
http://marc.info/?t=108537828400002&r=1&w=2
Lothar Wa?mann
--
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Ka-Ro electronics GmbH | Pascalstra?e 22 | D - 52076 Aachen
Phone: +49 2408 1402-0 | Fax: +49 2408 1402-10
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next prev parent reply other threads:[~2010-06-23 15:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-23 15:06 strange segfaults with CompactFlash in "true-ide" mode on PXA270 Juergen Schindele
2010-06-23 15:24 ` Lothar Waßmann [this message]
2010-06-25 2:09 ` Rabin Vincent
2010-06-25 7:11 ` Juergen Schindele
2010-06-25 9:45 ` Sergei Shtylyov
2010-06-25 13:39 ` Catalin Marinas
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