On Thu, May 31, 2007 at 03:22:07PM -0700, Linus Torvalds wrote:
>
>
> On Thu, 31 May 2007, Mike Miller (OS Dev) wrote:
>
> > On Wed, May 30, 2007 at 07:22:14PM -0700, Linus Torvalds wrote:
> > >
> > >
> > > On Tue, 29 May 2007, Michal Piotrowski wrote:
> > > >
> > > > Subject : Oops on 2.6.22-rc2 when unloading the cciss driver
> > > > References : http://lkml.org/lkml/2007/5/24/172
> > > > Submitter : Mike Miller (OS Dev) <[email protected]>
> > > > Status : Unknown
> > >
> > > I thought this one should be fixed by commit e9ca75b53. Not so?
> >
> > I apologize for the slow response. I also apologize that I don't know enough
> > about git to figure out what commit e9ca75b53 does.
>
> Even without git, you can use the kernel.org gitweb install:
>
> http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commitdiff;h=e9ca75b53
>
> (where the "h=...." is the magic part - pick any commit SHA1 you want,
> including short-hand ones like the one I gave).
>
> With git, you just do
>
> git show e9ca75b53
>
> to see a particular named commit.
>
> > I submitted a fix that was blessed by Eric B. that fixed that Oops.
>
> Ok, I don't think I have anything like that. The one I pointed to is the
> one by Gerald Britton, acked by you ..
>
> But I now realize that that commit was already in -rc2. In fact, it's just
> before the -rc2 release. So while it claims to fix one oops on shutdown,
> it may be the _cause_ of the oops on mudule unload.
>
> Linus
Linus,
The fix from Gerald was a different Oops and is not related to this problem.
This is the patch I submitted for the rmmod Oops:
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index e01380b..6632150 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -558,12 +558,12 @@ static int msi_free_irqs(struct pci_dev* dev)
list_for_each_entry_safe(entry, tmp, &dev->msi_list, list) {
if (entry->msi_attrib.type == PCI_CAP_ID_MSIX) {
- if (list_is_last(&entry->list, &dev->msi_list))
- iounmap(entry->mask_base);
-
writel(1, entry->mask_base + entry->msi_attrib.entry_nr
* PCI_MSIX_ENTRY_SIZE
+ PCI_MSIX_ENTRY_VECTOR_CTRL_OFFSET);
+
+ if (list_is_last(&entry->list, &dev->msi_list))
+ iounmap(entry->mask_base);
}
list_del(&entry->list);
kfree(entry);
Reference:
http://groups.google.com/group/linux.kernel/browse_frm/thread/ed0949e9d42cfdef/5953daaa00ea5bf7?lnk=gst&q=cciss&rnum=3&hl=en#5953daaa00ea5bf7
I'm not sure what the status is right now.
Thanks,
mikem
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