[Bug 267028] kernel panics when booting with both (zfs,ko or vboxnetflt,ko or acpi_wmi.ko) and amdgpu.ko

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=267028

--- Comment #146 from Mark Millard <marklmi26-fbsd@yahoo.com> ---
(In reply to Mark Millard from comment #145)

For the:

fault virtual address   = 0x7

examples, it looks like the value stored in RAM has the 0x7
in it instead of being a later offset addition. The loop
in question in avl_destroy_nodes just uses "mov (%rdi),%rdi"
with no offset involved:

NOTE: Loop starts below
   0x0000000000000ba0 <+64>:    mov    %rdi,%rax
   0x0000000000000ba3 <+67>:    mov    %rdx,%rcx
   0x0000000000000ba6 <+70>:    mov    (%rdi),%rdi
   0x0000000000000ba9 <+73>:    mov    %rax,%rdx
   0x0000000000000bac <+76>:    test   %rdi,%rdi
   0x0000000000000baf <+79>:    jne    0xba0 <avl_destroy_nodes+64>
NOTE: The above is the loop end

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