Issue with mbuf de-allocation when using NFS in RTEMS

Ben Dart Ben.Dart at
Thu Nov 2 02:48:55 UTC 2017

Hi Chris,

I did see this patch, it looks like it is to do with fixing the issue with the RPC cant decode. We will see if it fixes this, but why would the MBUF count go down due to this? Have you seen anything that would indicate a reason for the MBUF not being freed.


-----Original Message-----
From: Chris Johns [mailto:chrisj at] 
Sent: Thursday, November 02, 2017 11:57 AM
To: Ben Dart; users at
Subject: Re: Issue with mbuf de-allocation when using NFS in RTEMS

On 02/11/2017 12:28, Ben Dart wrote:
> But still, eventually, we run out of MBUFS and the system is 
> inoperable. We are running an old version of RTEMS (4.9.2) but even 
> compared to the newer version
> 4.11 we can see any significant changes in this or the NFS related 
> files that would suggest a fix for this behavior. Is this well-known 
> and is there a patch for it?

A google of "xact: xid -- got" returned ...

It seems you are not alone with the issue on the 4.9 series. Till references ticket #1775 in the second link which is in Trac, see There are patches attached which might be worth looking into.


More information about the users mailing list