Re: [PATCH v2 0/4] alpha: stack fixes

[Michael Cree <mcree@orcon.net.nz>]

On Sun, Feb 02, 2025 at 10:43:59AM +0100, Magnus Lindholm wrote:
> I've applied the patches to git 6.13.0-09954-g590a41bebc8c and the
> system has been running for more than 24 hours without any problems,
> I've generated some system load with building kernels and unpacking
> large tar.xz files. The patch series seems to have fixed the
> rcu-related issues with network interface renaming as well as the
> kernel module unload. I'm now also running tests with memory
> compaction enabled (CONFIG_COMPACTION). This used to cause seemingly
> random segmentation faults when enabled on alpha. So far, memory
> compaction seems to work with the patched kernel. With a little luck
> the issues seen with memory compaction on alpha were related to stack
> alignment problems as well.

After 24 hours of really good going with the patches and
CONFIG_COMPACTION turned off, I rebooted with CONFIG_COMPACTION on
and within a couple of hours saw the random segmentation faults
reappear.  I have now rebooted with the kernel with
CONFIG_COMPACTION off and its been plain sailing for the last 12
hours.

So I suspect CONFIG_COMPACTION problem is something else.

Cheers,
Michael.