freezes and floating point KDL in VMware after hrev57381

[augiedoggie]

After hrev57381 I have begun experiencing freezing and KDLs while running x86_64 Haiku inside of VMware Workstation 17.0.2 on an Arch Linux host.

I have observed the problem with dd and possibly the cmake executable. Running the command dd bs=32 count=1 < input.txt > output.txt will either KDL about 10% of the time or the process will consume 100% CPU on one core until I kill it with ProcessController. At this point Haiku will immediately freeze up.

Running with hrev57381 reverted seems to fix the problem for me.

[augiedoggie]

VMware serial output with FPU KDL

[augiedoggie]

I can also boot this same installation of Haiku to bare metal and I did not have any problems.

[waddlesplash]

Seems very odd that the machine has no problem on bare metal but does in VMware. For whatever it's worth, I ran the same "dd" test also in VMware and got no KDLs, everything worked fine (but this is a different version of VMware and not on a Linux host.)

[korli]

could it be that the initial fpu state isn't correct in this case? Anyway we could handle this special case in kernel mode, clearing the fp exception, without panic.

[waddlesplash]

Maybe relevant: I boot in VMware via BIOS loader while it appears augiedoggie is using the EFI loader.

[Coldfirex]

Does this occur with VMware Workstation 17.5? FWIW I couldnt reproduce on VMware ESXi 7.

[augiedoggie]

Replying to Coldfirex:

Does this occur with VMware Workstation 17.5? FWIW I couldnt reproduce on VMware ESXi 7.

I'm unable to boot with 17.5 because of some type of EFI/kernel handoff problem. IIRC waddlesplash made a comment about having the same trouble on another ticket.