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List:       netfilter-devel
Subject:    Re: nftables: NULL pointer dereference
From:       "Christoph A." <casmls () gmail ! com>
Date:       2009-07-23 23:48:13
Message-ID: 4A68F6BD.8060709 () gmail ! com
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Patrick McHardy wrote:
>> Christoph A. wrote:
>>> when executing the testscript [1] (just to see if my nftables setup is
>>> working), I get the following stack trace.
>>>
>>> [1] http://article.gmane.org/gmane.linux.network/122512
>>>
>>> I'm using the latest version from:
>>> git://git.kernel.org/pub/scm/linux/kernel/git/kaber/nft-2.6.git
>>> kernel config is attached
>>>
>>> BUG: unable to handle kernel NULL pointer dereference at 00000014
>>>  IP: [<f8b471ff>] nft_validate_data_load+0x20/0x53 [nf_tables]
>> Thanks for the report. This is likely happening because the kernel
>> includes support for some changes for which I haven't pushed out the
>> corresponding userspace support yet, but it certainly shouldn't oops.
>> I'll look into it ...
> 
> I've added and pushed out this patch to fix it, thanks.

Thank you very much for providing a fix that fast!

Now I executed my first small nftables script successfully.

With some other scripts I got segmentation faults but I will report that
in a new thread.

thanks!
Christoph A.


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