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Re: memory clobber in rx path, maybe related to ath9k.

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On 10/05/2010 10:43 AM, Luis R. Rodriguez wrote:
On Tue, Oct 5, 2010 at 10:38 AM, Ben Greear<greearb@xxxxxxxxxxxxxxx>  wrote:
On 10/05/2010 10:36 AM, Luis R. Rodriguez wrote:

On Tue, Oct 5, 2010 at 10:24 AM, Ben Greear<greearb@xxxxxxxxxxxxxxx>
  wrote:

On 10/05/2010 10:16 AM, Luis R. Rodriguez wrote:

On Tue, Oct 5, 2010 at 10:00 AM, Ben Greear<greearb@xxxxxxxxxxxxxxx>
  wrote:

I started seeing this very soon after creating interfaces.

Can you be more specific how one can reproduce?

Enable SLUB debugging, DEBUG_PAGEALLOC (Debug page memory allocations),
lockdep, pre-empt.

OK I just enabled PAGE_ALLOC thingy, it wasn't enabled on my kernel.

Please try creating a bunch of stations on one ath9k phy,

How many?

130 is a nice round number :)

Let me get this straight. You are creating 130 STAs with ath9k using
iw, then running 150 instances of wpa_supplicant to connect to the
same AP?

Well, 130 instances, yes :)

I'll try with a smaller number and see if I can hit it.

Please do, you can use the log2n approach, should take you 7 tries,
each by a power of 2, start at the middle of course.

Sure...will be a few minutes.

If it's any sane bug, then hopefully I can hit it with a small
number.

Out of curiosity, is there any particular number of STAs > 1 you guys
test with?

Thanks,
Ben


   Luis


--
Ben Greear <greearb@xxxxxxxxxxxxxxx>
Candela Technologies Inc  http://www.candelatech.com

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