From: Catalin Marinas <catalin.marinas@arm.com>
To: Sudeep K N <sudeepholla.maillist@gmail.com>
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>,
linux-arm-kernel@lists.arm.linux.org.uk, drzeus-mmc@drzeus.cx,
linux-kernel@vger.kernel.org
Subject: Re: Rootfs in eMMC: Kernel panic ...Attempted to kill init!
Date: Mon, 22 Jun 2009 15:32:38 +0100 [thread overview]
Message-ID: <1245681158.15580.91.camel@pc1117.cambridge.arm.com> (raw)
In-Reply-To: <1245680789.15580.85.camel@pc1117.cambridge.arm.com>
On Mon, 2009-06-22 at 15:26 +0100, Catalin Marinas wrote:
> On Mon, 2009-06-22 at 19:43 +0530, Sudeep K N wrote:
> > Thanks for the suggestion.
> > With the logs it is clear that crash is in the userspace.
> > I am getting one of the 2 logs(below) randomly.
>
> This sounds familiar: SMP -> writealloc cache policy (could be forced by
> hardware) -> cache corruption in user space with ext2.
>
> Does you driver use the DMA API? If not, does your eMMC driver flush the
> cache (in case you hit one of the long-standing problems with PIO
> drivers).
>
> It's worth trying this hack:
>
> http://article.gmane.org/gmane.linux.ports.arm.kernel/51556
To be more precise:
If your system is ARM11MPCore based and your driver uses DMA, try this
patch (in-software DMA cache maintenance operations broadcasting):
http://www.linux-arm.org/git?p=linux-2.6-stable.git;a=commitdiff_plain;h=95298b1792121e7068258de451caec7f3dda0e78
If your driver is a PIO one, try this patch (flush_dcache_page called in
the VFS layer):
http://www.linux-arm.org/git?p=linux-2.6-stable.git;a=commitdiff_plain;h=d763f5815aa21095141c3ba87011906a61505dad
--
Catalin
next prev parent reply other threads:[~2009-06-22 14:33 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-06-18 9:18 Rootfs in eMMC: Kernel panic ...Attempted to kill init! Sudeep K N
2009-06-19 13:44 ` Russell King - ARM Linux
2009-06-22 14:13 ` Sudeep K N
2009-06-22 14:26 ` Catalin Marinas
2009-06-22 14:32 ` Catalin Marinas [this message]
2009-06-22 15:43 ` Russell King - ARM Linux
2009-06-22 15:50 ` Catalin Marinas
2009-06-22 15:56 ` Russell King - ARM Linux
2009-06-22 16:13 ` Catalin Marinas
2009-06-22 16:46 ` Russell King - ARM Linux
2009-06-22 21:37 ` Catalin Marinas
2009-06-23 9:23 ` Linus Walleij
2009-06-23 14:34 ` Catalin Marinas
2009-07-13 15:44 ` Dirk Behme
2009-07-13 15:48 ` Russell King - ARM Linux
2009-07-16 10:39 ` Catalin Marinas
2009-06-23 5:58 ` Sudeep K N
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1245681158.15580.91.camel@pc1117.cambridge.arm.com \
--to=catalin.marinas@arm.com \
--cc=drzeus-mmc@drzeus.cx \
--cc=linux-arm-kernel@lists.arm.linux.org.uk \
--cc=linux-kernel@vger.kernel.org \
--cc=linux@arm.linux.org.uk \
--cc=sudeepholla.maillist@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox