netdev - Re: [DANGER 8/7]: ipv4: Cache output routes in fib

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Message-Id: <20120712.180632.2257789590224563114.davem@davemloft.net>
Date:	Thu, 12 Jul 2012 18:06:32 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	subramanian.vijay@...il.com
Cc:	netdev@...r.kernel.org
Subject: Re: [DANGER 8/7]: ipv4: Cache output routes in fib_info nexthops.

From: Vijay Subramanian <subramanian.vijay@...il.com>
Date: Thu, 12 Jul 2012 17:52:54 -0700

> ip_rcv_finish() eventually calls ip_route_input_slow() wherein
> fib_lookup() initially returns a res.type of RTN_UNICAST (why not
> RTN_LOCAL?).

Strange, since only this specific patch causes the problem there must
be some issue with the size of struct fib_info or something like that
triggering the problem.  Something might be corrupted in the nexthops.

I wonder if there is some uninitialized data somewhere, or something
silly like that.
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