On Mon, 2020-08-17 at 13:13 +0200, bigeasy@linutronix.de wrote:

On 2020-08-17 08:12:31 [+0000], Roosen Henri wrote:

quoted

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Is the 4.14 series the only one that is affected?

No, unfortunately not.

I ended up testing the v4.14.184-rt84 on two systems and the
v5.4.45-
rt27 on another system, all iMX6Q. Only one of the v4.14 systems is
still running, the other v4.14 system dumping backtraces until
eventually reset, the v5.4 system endlessly dumping backtraces:

v4.14: https://paste.ubuntu.com/p/ZdFYhs4pjx/
v5.4: https://paste.ubuntu.com/p/wZPCQv8KjX/

So the 5.4 has an uptime of 45 days until this start?

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If the backtraces don't point to a root-cause, are there any kernel
configuration options which are usefull to track this issue down?

The 5.4 is not complete, it started earlier and this might be a
follow-up problem (it seems to originate in die()).
You could send me the config, I have an imx6q somewhere so I might be
able to take a look. However I want sort another ppc issue first.

Sebastian, did you have a chance to bring up a duration test on your
imx6q board? Are there any results from testing?

Thanks,
Henri