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.