On Fri, Oct 20, 2023 at 1:23 PM <wes...@technicien.io> wrote: > I've recently installed OpenBSD 7.4 on this laptop. > > However, I'm experiencing random crashes. These occur at various times, > including during kernel loading (before running /etc/rc), > > or later while I'm using the system. > > > I've included the contents of /var/run/dmesg.boot below and attached the > screens with the ddb output command. > ...
> bios0: vendor TOSHIBA version "Version 4.30" date 04/26/2018 > The screenshots show that the fault happens during a wifi interrupt that catches the ACPI thread processing a very deeply nested AML code. I suspect it's actually running out of kernel stack space as a result. Everything below is based on that hypothesis. So, the first thing to try is to see if there's a BIOS update newer than the 2018 rev it currently has. They may have optimized the AML code, or at least made it less deeply nested. Another possibility is to see if there's a device you can disable that would result in that AML not being called. If there's anything that you aren't using then disable it in the BIOS and hope. The last possibility would be to build a kernel which allocates more pages per thread for its kernel stack by bumping the UPAGES #define in /usr/src/sys/arch/amd64/include/param.h and building a new kernel. It's really only the ACPI thread that needs this, but we don't currently have code to control that on a per-thread basis. Philip Guenther
