linux-kernel - Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmalloc.c

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Date:	Sat, 23 Aug 2008 13:17:48 -0700 (PDT)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kernel Testers List <kernel-testers@...r.kernel.org>,
	"Alan D. Brunelle" <Alan.Brunelle@...com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arjan van de Ven <arjan@...ux.intel.com>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [Bug #11342] Linux 2.6.27-rc3: kernel BUG at mm/vmalloc.c -
 bisected



On Sat, 23 Aug 2008, Linus Torvalds wrote:
> 
> This one makes no sense. It's triggering a BUG_ON(in_interrupt()), but 
> then the call chain shows that there is no interrupt going on.

Ahh, later in that thread there's another totally unrelated oops in 
debug_mutex_add_waiter().

I'd guess that it is really wild pointer corrupting memory, quite possibly 
due to a double free or something like that. Alan - it would be good to 
run with DEBUG_PAGE_ALLOC and SLUB debugging etc if you don't already do 
that?

		Linus
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