Bug#908712: linux-image-4.17.0-0.bpo.3-marvell: stretch-backports kernel 4.17 breaks QNAP TS-209

[Martin Michlmayr <tbm@cyrius.com>]

Ralf, have you been able to find out more about this issue?

If not, it might be worth copying Andrew Lunn <andrew@lunn.ch> who is
the kernel upstream expert for Orion.

* Ralf Hemberger <ralf.hemberger@gmail.com> [2018-10-02 21:48]:
> Hello,
> 
> > I can try this weekend whether removing systemd makes a difference.
> >
> Installing sysvinit-core made no difference.
> I tried the older backports-kernels and the problem exists already with
> linux-image-4.12.0-0.bpo.2-marvell_4.12.13-1~bpo9+1_armel.deb.
> (linux-image-4.11.0-0.bpo.1-marvell_4.11.6-1~bpo9+1_armel.deb crashed even
> earlier:  [    0.000000] INITRD: 0x00800000+0x00400000 overlaps in-use
> memory region - disabling initrd)
> 
> I found this bug report:
> https://www.spinics.net/lists/arm-kernel/msg653367.html ([PROBLEM] orion5x:
> Kernel boot panic at of_clk_get()/orion_mdio_probe() on a non DT box on
> linux-4.16.7).
> 
> A working 4.9-kernel prints these messages:
> [   24.542764] libphy: Fixed MDIO Bus: probed
> [   24.586445] mv643xx_eth: MV-643xx 10/100/1000 ethernet driver version 1.4
> [   24.635774] libphy: PHY orion-mdio-mii:08 not found
> [   24.923918] libphy: orion_mdio_bus: probed
> [   24.982809] mv643xx_eth_port mv643xx_eth_port.0 eth0: port 0 with MAC
> address 00:08:9b:8c:3b:8f
> 
> With kernel > 4.12 you get e.g.:
> [   23.588924] libphy: Fixed MDIO Bus: probed
> [   41.006693] mv643xx_eth: MV-643xx 10/100/1000 ethernet driver version 1.4
> [   41.082447] libphy: PHY orion-mdio-mii:08 not found
> [   41.669309] libphy: PHY orion-mdio-mii:08 not found
> [   41.674709] Unable to handle kernel NULL pointer dereference at virtual
> address 0000000c
> [   41.682935] pgd = (ptrval)
> [   41.685714] [0000000c] *pgd=00000000
> [   41.689321] Internal error: Oops: 5 [#1] ARM
> .
> .
> Cheers

-- 
Martin Michlmayr
https://www.cyrius.com/