linux-kernel - Re: Slab panic on 2.6.19-rc3-git5 (-git4 was OK)

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Date:	Sun, 29 Oct 2006 00:05:13 -0700
From:	Andrew Morton <akpm@...l.org>
To:	"Martin J. Bligh" <mbligh@...gle.com>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-mm <linux-mm@...ck.org>, Andy Whitcroft <apw@...dowen.org>,
	Linus Torvalds <torvalds@...l.org>
Subject: Re: Slab panic on 2.6.19-rc3-git5 (-git4 was OK)

On Sat, 28 Oct 2006 22:57:48 -0700
"Martin J. Bligh" <mbligh@...gle.com> wrote:

> -git4 was fine. -git5 is broken (on PPC64 blade)
> 
> As -rc2-mm2 seemed fine on this box, I'm guessing it's something
> that didn't go via Andrew ;-( Looks like it might be something
> JFS or slab specific. Bigger PPC64 box with different config
> was OK though.
> 
> Full log is here: http://test.kernel.org/abat/59046/debug/console.log
> Good -git4 run: http://test.kernel.org/abat/58997/debug/console.log
> 
> kernel BUG in cache_grow at mm/slab.c:2705!

This?

--- a/mm/vmalloc.c~__vmalloc_area_node-fix
+++ a/mm/vmalloc.c
@@ -428,7 +428,8 @@ void *__vmalloc_area_node(struct vm_stru
 	area->nr_pages = nr_pages;
 	/* Please note that the recursion is strictly bounded. */
 	if (array_size > PAGE_SIZE) {
-		pages = __vmalloc_node(array_size, gfp_mask, PAGE_KERNEL, node);
+		pages = __vmalloc_node(array_size, gfp_mask & ~__GFP_HIGHMEM,
+					PAGE_KERNEL, node);
 		area->flags |= VM_VPAGES;
 	} else {
 		pages = kmalloc_node(array_size,
_

-
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