lkml.org 
[lkml]   [2008]   [Jun]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: BUG: NULL pointer dereference at 00000000 -- IP: [<f8e783d5>] :b43:b43_dma_mapping_error+0x16/0x155
Date
On Thursday 12 June 2008 07:18:32 FUJITA Tomonori wrote:
> > Yeah ok. That's an unlikely error path.
>
> Yeah, it doesn't always happen, but it possible that it happens?

Yes. I will create a new patch and send it to John Linville.
So it will also quickly end up in the -mm tree, too.
This will fix both bugs.

> No, seems that there are some confusion. This is just in -mm to find
> problems:
>
> http://userweb.kernel.org/~akpm/mmotm/broken-out/dma-mapping-add-the-device-argument-to-dma_mapping_error.patch
>
> This patch is a trivial but changes lots of places. So it's difficult
> to get an ACK on all the places.

Thanks a lot for explaining this. This makes things a lot easier.

> This patch need several fixes but all the patches are trivial except
> for b34. I guess that it is because b34 handles devices for

It's called b43 ;)

> dma-mapping in an uncommon way.

Yeah, the hardware is pretty stupid, so we have lots of special workarounds
and so on... So I hardly touch the DMA code and was very surprised about
this bugreport. :)

--
Greetings Michael.


\
 
 \ /
  Last update: 2008-06-12 11:17    [W:0.060 / U:0.180 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site