[Bug 267028] kernel panics when booting with ZFS and amdgpu.ko (both are required)

From: <bugzilla-noreply_at_freebsd.org>
Date: Sat, 28 Jan 2023 00:29:36 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=267028

--- Comment #48 from George Mitchell <george@m5p.com> ---
And the list of kernel modules loaded by a non-crashing boot is:

kernel
sem.ko
zfs.ko
if_re.ko
vboxdrv.ko
amdgpu.ko
drm.ko
linuxkpi_gplv2.ko
dmabuf.ko
ttm.ko
amdgpu_raven_sdma_bin.ko
amdgpu_raven_asd_bin.ko
amdgpu_raven_ta_bin.ko
amdgpu_raven_pfp_bin.ko
amdgpu_raven_me_bin.ko
amdgpu_raven_ce_bin.ko
amdgpu_raven_rlc_bin.ko
amdgpu_raven_mec_bin.ko
amdgpu_raven_mec2_bin.ko
amdgpu_raven_vcn_bin.ko
vboxnetflt.ko
(and a whole bunch more)

In other words, when the crash happens, it always involves a call to
modlist_lookup2 from whatever kernel module gets loaded following amdgpu.

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