Loading zfs module results in hangup on i386

[Yasuhiro Kimura]

From: Yasuhiro Kimura <yasu at utahime.org>
Subject: Loading zfs module results in hangup on i386 (Re: Install of 13.0-RELEASE i386 with ZFS root hangs up)
Date: Sat, 08 May 2021 07:31:47 +0900 (JST)

> Now I think I know what is the source of problem. After all, on
> 13.0-RELEASE i386 system simply loading zfs module results in system
> hang up.
> 
> The steps to reproduce it are,
> 
> 1. Boot with install media of 13.0-RELEASE i386
> 2. At the first menu of FreeBSD installer, select 'Shell'.
> 3. At the shell prompt, type `kldload zfs` and return key.
> 
> I confirmed hangup happens with VirtualBox, VMware Player and my bare
> metal PC environement. So the problem doesn't depend on hardware.
> 
> And hangup also happens with 13-STABLE and 14-CURRENT.

This problem is already reported to Bugzilla.

Bug 254177 When ZFS is recognized, An i386 machine with a lot of memory hangs.
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254177

---
Yasuhiro Kimura