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Re: Bug#599345: linux-image-2.6.32-5-amd64: iwlagn allocation failure

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On Sun, Oct 10, 2010 at 20:03:13 +0100, Ben Hutchings wrote:

> On Thu, 2010-10-07 at 09:51 +0200, Johannes Berg wrote:
> > On Wed, 2010-10-06 at 22:54 +0100, Ben Hutchings wrote:
> > > On Wed, 2010-10-06 at 21:19 +0200, Julien Cristau wrote:
> > > > Package: linux-2.6
> > > > Version: 2.6.32-23
> > 
> > > > Oct  6 21:05:02 radis kernel: [378665.326381] NetworkManager: page allocation failure. order:4, mode:0x40d0
> > > > Oct  6 21:05:02 radis kernel: [378665.326393] Pid: 25555, comm: NetworkManager Not tainted 2.6.32-5-amd64 #1
> > > [...]
> > > > Oct  6 21:05:02 radis kernel: [378665.363630] iwlagn 0000:0c:00.0: kmalloc for auxiliary BD structures failed
> > > [...]
> > > 
> > > This particular allocation is for an array which is not used for DMA and
> > > therefore could be stored in non-contiguous pages allocated with
> > > vmalloc().  But there may be some good reason not to do this.
> > 
> > I have, however much more recently than that kernel, cleaned this up in
> > commit ff0d91c3eea6e25b47258349b455671f98f1b0cd -- this particular
> > allocation is now 2048 or 4096 bytes depending on the architecture (32
> > vs 64 bit pointers). If you want to backport this, there are two or
> > three more commits right before it that would probably be required.
> 
> It seems like we can get away with a much smaller change though.
> Julien, could you test this patch?
> 
Getting lots of those in dmesg:
iwlagn 0000:0c:00.0: Too many chunks: 2

Doesn't seem to prevent the network from working though.

Cheers,
Julien

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