Re: [PATCH] tty/serial: atmel: use port->name as name in request_irq()

[Richard Genoud <richard.genoud@gmail.com>]

On 03/05/2018 15:34, Richard Genoud wrote:
> On 03/05/2018 14:44, Sebastian Andrzej Siewior wrote:
>> On 2018-05-03 14:36:03 [+0200], Richard Genoud wrote:
>>> Could resend your patch with Fixes: in the commit message ?
>>
>> will do shortly.
>>
>>> BTW, I didn't manage to reproduce the behavior you describe, could you
>>> give me your .config and describe a little more how you manage to
>>> trigger this bug ?
>> .config sent offlist.
>> Did you not reproduce this even with the second/debug patch I've sent?
> Nope. (I tried on a sam9g35 with buildroot/busybox)
> 
> I have a sama5d3 with a debian as a home server, I'll give it a try.

Ok, I reproduced the use-after-free on a SAMA5D2 and on a SAMA5D3, both
with debian (sid / stretch).
After the patch, no mode funny things in /proc/interrupts.

> 
>>
>>> (do you use the console on serial debug ? which board ? )
>> up to date debian sid booting with systemd. After boot completed I do
>> "cat /proc/interrupts" and check for the "gone" string.
>> This is
>> [    0.000000] OF: fdt:Machine model: SAMA5D3 Xplained
>> [    0.000000] Kernel command line: earlyprintk=ttyS0,115200 console=ttyS0,115200 root=/dev/mmcblk0p2 rootwait
>> [    0.520000] AT91: Detected SoC family: sama5d3
>> [    0.520000] AT91: Detected SoC: sama5d36, revision 2
>>
>> at91-sama5d3_xplained.dtb
>>
>> Is this enough?
> 
> Great,
> 
> Thanks !
>