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Date:	Sat, 18 Jun 2016 18:44:32 -0600
From:	David Ranch <>
To:	David Miller <>,
Subject: Re: PATCH 1/1] AX.25: Close socket connection on session completion

Hello David,

I don't have a specific commit # for you at the moment but there have been a few serious regressions since 4.1.x.  When new code gets commited, are there any systems to run regession tests on?  I'd be willing to build up a pair of VMs that can be run with scripts to verify say basic sanity for kissattach, ax.25, netrom, rose, etc.

Btw, once I get back, I hope to pursue some additional negative case fixes:  (pulling a usb-to-serial adapter when used with kiss-attach will panic the kernel, ifconfig rose0 down will take the kernel to 100%, and a data corruption issue for large transfers (2MB+).

Thanks for your help!


On June 17, 2016 12:33:19 PM CST, David Miller <> wrote:
>From: Basil Gunn <>
>Date: Thu, 16 Jun 2016 09:42:30 -0700
>> A socket connection made in ax.25 is not closed when session is
>> completed.  The heartbeat timer is stopped prematurely and this is
>> where the socket gets closed. Allow heatbeat timer to run to close
>> socket. Symptom occurs in kernels >= 4.2.0
>> Originally sent 6/15/2016. Resend with distribution list matching
>> scripts/ output.
>> Signed-off-by: Basil Gunn <>
>What changed in 4.2.x that broke this?
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