Hey Basil,
Thanks for digging into this. Few things to check:
GOOD - the 4.1.21 kernel was released on 4/6/16
BAD - 4.2.8 kernel was released on 12/16/15
Can you try a vanilla kernel with:
- 4.2.7, released on 12/9/16 to see if that's OK
- 4.1.25, released on 5/23/16 to see if that's ok? (a worse case
4.1.x test)
If 4.1.25 is bad:
- Try 4.1.14, released on 12/9/15 to see if that's ok?
If that's ok, try:
- 4.1.15 released on 12/15/15
- 4.1.16 released on 1/23/16
--David
On 06/03/2016 01:16 PM, Basil Gunn wrote:
Have you tried to disable smp (in grub, boot the kernel with the
cmdline option nosmp)? Did then the problem still occur?
I disabled SMP and the problem of socket remains open after disconnect
still occurs with kernels >= 4.2.
cat /boot/cmdline.txt
dwc_otg.lpm_enable=0 console=serial0,115200 console=tty1
root=/dev/mmcblk0p2 rootfstype=ext4 elevator=deadline fsck.repair=yes
maxcpus=0 rootwait
I built a 4.1.21 kernel from the raspbian repo
https://github.com/raspberrypi/linux/tree/rpi-4.1.y
and the problem does NOT exist with that kernel.
I built a 4.2.8 kernel from the raspbian repo
https://github.com/raspberrypi/linux/tree/rpi-4.2.y
and the problem DOES exist with that kernel.
Showing connection listening after final disconnect.
Active AX.25 sockets
Dest Source Device State Vr/Vs Send-Q Recv-Q
N7NIX-0 N7NIX-11 ax0 LISTENING 001/004 0 0
* N7NIX-11 ax0 LISTENING 000/000 0 0
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