On Tue, May 03, 2011 at 01:10:05AM +0000, James Bottomley wrote:
> commit: b25026981aecde3685dd0e45ad980fff9f528daa
> From: Stanislaw Gruszka <[email protected]>
> Date: Wed, 20 Apr 2011 15:57:14 +0200
> Subject: [PATCH] iwlwifi: fix skb usage after free
> 
> Since
> 
> commit a120e912eb51e347f36c71b60a1d13af74d30e83
> Author: Stanislaw Gruszka <[email protected]>
> Date:   Fri Feb 19 15:47:33 2010 -0800
> 
>     iwlwifi: sanity check before counting number of tfds can be free
> 
> we use skb->data after calling ieee80211_tx_status_irqsafe(), which
> could free skb instantly.
> 
> On current kernels I do not observe practical problems related with
> bug, but on 2.6.35.y it cause random system hangs when stressing
> wireless link.
> 
> Cc: [email protected] # 2.6.32+

This doesn't apply to the .32 or .33-stable kernels.  If you wish to see
it there, can someone please provide a backport and send it to
[email protected] ?

thanks,

greg k-h


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