On Thu, Jan 05, 2017 at 08:49:44PM +0100, Robert Richter wrote:

On 05.01.17 13:22:00, Robert Richter wrote:

quoted

On 05.01.17 12:08:20, Will Deacon wrote:

quoted

I really can't see how the fix causes a crash, and I couldn't reproduce
it on any of my boards, nor could any of the Linaro folk afaik. Are you
definitely running mainline with just these two patches from Ard?

Yes, just both patches applied. Various other solutions were working.

I have retested the same kernel (v4.9 based) as before and now it
boots fine including rtc-efi device registration (it was crashing
there):

 rtc-efi rtc-efi: rtc core: registered rtc-efi as rtc0

There could be a difference in firmware and mem setup, though I also
downgraded the firmware to test it, but can't reproduce it anymore. I
could reliable trigger the crash the first time.

FTR the oops.

Hmm, I just can't help but think you were accidentally running with
additional patches when you saw this oops previously. For example,
your log looks very similar to this one:

  http://lists.infradead.org/pipermail/linux-arm-kernel/2016-December/473666.html

but then again, these crashes probably often look alike.

Will