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CPU core locked when RTC changed

Question asked by Emil Myhrman on Nov 13, 2015
Latest reply on Nov 17, 2015 by Emil Myhrman


This is a very strange bug.


We've upgraded from 3.0.35 to 3.14 (on Lollipop 5.1.1-ga) and are experiencing problems with the CPU getting locked up when clock/date is changed. But only one of the cores, and eventually watchdog triggers restart.


This only happens if the unix time set is above 268435456 (0x10000000), setting anything below that works fine.

In other words; the following command works fine.

date -s 19780704.212400

But if running.

date -s 19780704.212500

One of the CPU cores gets locked up.


Anyone has any idea what goes wrong?


We're running on iMX6DL, and kernel 3.0.35 works fine.


Best regards,