On Fri, Feb 06, 2009 at 01:05:59AM -0800, David Miller wrote:

From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Fri, 6 Feb 2009 19:54:06 +1100

quoted

This should eliminate the backtrace as reported, but it'll just
show up somewhere else.  In particular, the control message (see
sys_sendmsg) itself is copied to kernel memory via kmalloc and
it's limited to INT_MAX :)

Can you be more specific, do you mean this is happening
via datagram_send_ctl()?

Well the data that led to the back trace came from a cmsg, I was
merely pointing out that the cmsg itself is kmalloced and copied
by sys_sendmsg and it's only limited to INT_MAX.

So even if you throw away the message in IPv6, sys_sendmsg will
still do an even bigger allocation on that message which is just
as likely to fail.

Cheers,
-- 
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