On 01/07/2020 12:23, Andrzej Pietrasiewicz wrote: > Hi, > [ ... ] >>>> >>>> I did reproduce: >>>> >>>> v5.8-rc3 + series => imx6 hang at boot time >>>> v5.8-rc3 => imx6 boots correctly >>>> > > What did you reproduce? Timeout logging in to the test system or a > "real" failure of a test? Timeout logging. Boot hangs. >>> I kindly ask for a bisect. >> >> I will give a try but it is a very long process as the board is running >> on kernelci. >> >> I was not able to reproduce it on imx7 despite it is the same sensor :/ >> >> > > Could it be that the thermal sensors somehow contribute to entropy and > after > the series is applied on some machines it takes more time to gather enough > entropy? I assume you are talking about the entropy for random? It would be really surprising if it is the case. The message appears asynchronously, I believe the boot flow is stuck in a mutex. -- <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs Follow Linaro: <http://www.facebook.com/pages/Linaro> Facebook | <http://twitter.com/#!/linaroorg> Twitter | <http://www.linaro.org/linaro-blog/> Blog