netdev - Re: [PATCH 0/2] rhashtable: Arbitrary rehashing

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Date:	Thu, 12 Mar 2015 16:46:35 +0000
From:	Thomas Graf <tgraf@...g.ch>
To:	Herbert Xu <herbert@...dor.apana.org.au>
Cc:	David Miller <davem@...emloft.net>, netdev@...r.kernel.org,
	josh@...htriplett.org,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
Subject: Re: [PATCH 0/2] rhashtable: Arbitrary rehashing

On 03/10/15 at 09:26am, Herbert Xu wrote:
> I have tested it using netlink but obviously more testing especially
> using netfilter would be welcome.

I ran the attached bind_netlink test written by Ying Xue and it
currently crashes with:

[  108.693908] BUG: unable to handle kernel paging request at fffffffffffffe68

I'm running bind_netlink like this:

while true; do
    ./bind_netlink 9000 324234324&
    ./bind_netlink 9000 888448422&
    ./bind_netlink 9000 324
done

I tested with the synchronize_rcu() fix on top as well and that
didn't help so it must be something else.

View attachment "bind_netlink.c" of type "text/plain" (1044 bytes)