linux-kernel - Re: sata_sil24 broken since 2.6.23-rc4-mm1

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Date:	Thu, 4 Oct 2007 07:32:52 +0200
From:	"Torsten Kaiser" <just.for.lkml@...glemail.com>
To:	"Matt Mackall" <mpm@...enic.com>
Cc:	"Tejun Heo" <htejun@...il.com>, "Jeff Garzik" <jeff@...zik.org>,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org
Subject: Re: sata_sil24 broken since 2.6.23-rc4-mm1

On 10/3/07, Matt Mackall <mpm@...enic.com> wrote:
> Well I can see no reason why the vma we just got to by the mm->mmap
> would have a vm_mm != mm, but I've certainly been wrong before.
>
> Try changing it to:
>
>         for (vma = mm->mmap; vma; vma = vma->vm_next)
>                 if (!is_vm_hugetlb_page(vma)) {
>                         if (vma->vm_mm != mm)
>                                 printk("WTF: vma->vm_mm %p mm %p\n",
>                                         vma->vm_mm, mm);
>                         walk_page_range(vma->vm_mm, vma->vm_start, vma->vm_end,
>                                         &clear_refs_walk, vma);
>         }

You were right.
I was able to trigger the error with above printk added, but nothing
was written to the syslog.

So now I'm rather out of ideas what to test... :(

Torsten
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