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Date:      Sun, 10 Dec 2017 20:35:06 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-net@FreeBSD.org
Subject:   [Bug 224218] Kernel panic in SCTP/IpV6 server mode
Message-ID:  <bug-224218-2472-i4TacjPWmC@https.bugs.freebsd.org/bugzilla/>
In-Reply-To: <bug-224218-2472@https.bugs.freebsd.org/bugzilla/>
References:  <bug-224218-2472@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224218

--- Comment #14 from Shreesh Holla <hshreesh@yahoo.com> ---
(In reply to Conrad Meyer from comment #12)
@conrad - I see what you mean since i386 => 32 bit. And yes definitely fixing
the SCTP stack to not use that much stack is the right one. From what I saw it
was right away and likely it uses a lot of stack for each stream and maybe each
association. Dont know the implementation - but difficult to break that need.
But as @Eugene said there is no requirement to keep it less than 4. 

My opinion is that the default is changed to 3 or 4. And systems that are lower
end can configure for lower numbers knowing that things like IpV6+SCTP will not
work. Assuming they dont need to use SCTP. This way the OS is generally usable
in such a specific situation? I mean I think this is a security situation since
it seems real easy to bring down a machine with this issue currently. Seems
like a more critical issue than that ICMPV6 issue of a while back.

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