linux-ide.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Daniel Drake <dsd@gentoo.org>
To: Jeff Garzik <jeff@garzik.org>
Cc: linux-ide@vger.kernel.org, erikbenada@yahoo.ca, caver_sean@ou.edu
Subject: promise-sata-pata crash on boot
Date: Mon, 23 Oct 2006 09:38:44 -0400	[thread overview]
Message-ID: <453CC5E4.9020001@gentoo.org> (raw)

Hi Jeff,

I've been including the promise-sata-pata patch in the Gentoo kernel for 
quite a while, taken directly from the git branch. The most recent 
incarnations of this patch have stopped working, causing an oops on 
bootup. This has been reproduced with unmodified 2.6.19-rc2 plus the patch.

Unable to handle kernel NULL pointer dereference at 0
RIP: pdc_sata_scr_read+0x3e

Trace:
sata_scr_read
ata_device_add
process_timeout
pdc_ata_init_one
pci_device_probe
driver_probe_device

http://weather.ou.edu/~sarms/panic3.jpeg

We added the following printk to pdc_sata_scr_read:

         printk("pdc_sata_scr_read ap=%p scr_addr %ld sc_reg %d\n", ap,
		ap->ioaddr.scr_addr, sc_reg);

And the output is:

pdc_sata_src_read ap=ffff8100bfce0498 src_addr -68169720896256 sc_reg 2
pdc_sata_src_read ap=ffff8100bfce0498 src_addr -68169720896256 sc_reg 0
pdc_sata_src_read ap=ffff8100bfce0498 src_addr -68169720896256 sc_reg 0
pdc_sata_src_read ap=ffff8100bfce0498 src_addr -68169720896256 sc_reg 2
pdc_sata_src_read ap=ffff8100bfce0498 src_addr -68169720896256 sc_reg 0
ata2: SATA link down (SStatus 0 SControl 300)
pdc_sata_src_read ap=ffff8100bfce0498 src_addr -68169720896256 sc_reg 0
pdc_sata_src_read ap=ffff8100bfd08498 src_addr 0 sc_reg 2
Unable to handle kernel NULL pointer dereference

See http://weather.ou.edu/~sarms/panic4.jpeg


Bug report is at http://bugs.gentoo.org/148059
Any ideas? Should we file this on the kernel bugzilla?

Thanks!
Daniel

                 reply	other threads:[~2006-10-23 13:39 UTC|newest]

Thread overview: [no followups] expand[flat|nested]  mbox.gz  Atom feed

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=453CC5E4.9020001@gentoo.org \
    --to=dsd@gentoo.org \
    --cc=caver_sean@ou.edu \
    --cc=erikbenada@yahoo.ca \
    --cc=jeff@garzik.org \
    --cc=linux-ide@vger.kernel.org \
    /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;
as well as URLs for NNTP newsgroup(s).