undefined instruction d5380001 (arm64 mrs emulation)

On 10/06/2017 03:13 PM, Catalin Marinas wrote:

On Fri, Oct 06, 2017 at 02:05:09PM +0200, Matthias Brugger wrote:

quoted

On 10/05/2017 06:16 PM, Catalin Marinas wrote:

quoted

On Thu, Oct 05, 2017 at 04:54:09PM +0200, Matthias Brugger wrote:

quoted

We also hit this bug in openSUSE Tumbleweed:
https://bugzilla.suse.com/show_bug.cgi?id=1061188

As Mark replied, we are still debating why this happens and whether the
above fix is sufficient. As we were digging further, we realised there
is no clear init level after which user space can be invoked, which
means Suzuki's patch may not always be sufficient.

I proposed something as a way of spotting this issue early [1] but I
need to post it on the linux-arch to get some consensus.

Can you post the full kernel log somewhere? I'm trying to figure out
what trigged the modprobe during the kernel boot.

You can find the kernel log here:
https://bugzilla.suse.com/attachment.cgi?id=743311

Thanks, it seems that ipv6 module loading triggered this.

Talking to Suzuki, we came to the conclusion that such thing cannot
happen before rootfs_initcall, so his original core_initcall change
should suffice. I'll push a patch out, hopefully for -rc4 and cc stable.

Thanks for the info.
Matthias