Re: BUG: NULL pointer dereference at 00000000 -- IP: [<f8e783d5>] :b43:b43_dma_mapping_error+0x16/0x155

From: Miles Lane
Date: Wed Jun 11 2008 - 01:57:42 EST


> The line that fails is
>
> if (unlikely(dma_mapping_error(ring->dev->dev->dma_dev, addr)))
>
> The value at 0x58(%eax) is zero, which corresponds to the "struct b43_wldev
> *dev" line in struct b43_dmaring. In other words, ring->dev is NULL, which
> causes the error. I'll leave it to FUJITA Tomonori to figure out why.

Thanks all,

I might have time in the morning to test one more patch, otherwise I
will be back in about three weeks.

Best wishes,

Miles
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