Re: kernel BUG at mm/slub.c:3689!
From: Håvard Skinnemoen
Date: Mon Jun 11 2007 - 11:58:32 EST
On 6/11/07, Paul Mundt <lethal@xxxxxxxxxxxx> wrote:
On Mon, Jun 11, 2007 at 04:19:26PM +0200, Haavard Skinnemoen wrote:
> I think the combination that triggered this bug was:
> * CONFIG_SLUB_DEBUG=y
> * ARCH_KMALLOC_MINALIGN=32
> * slub_debug not set at the command line
ARCH_KMALLOC_MINALIGN and ARCH_SLAB_MINALIGN are both in bytes
(ARCH_KMALLOC_MINALIGN used to be defined as BYTES_PER_WORD) if I recall
correctly, are you sure this is what you want?
Yeah, I actually defined it to L1_CACHE_BYTES. The idea is to avoid
cacheline sharing between different kmalloc() allocations, which may
mess up DMA transfers. So 32 bytes alignment is indeed what I want.
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