https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291273
Bug ID: 291273
Summary: p9fs module missing symbol exports -- dependent
modules fail to load with module loader local symbol
resolution disabled
Product: Base System
Version: 16.0-CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Blocks: 207898
See
https://lists.freebsd.org/archives/freebsd-current/2025-November/009500.html
for background.
To reproduce, set
debug.link_elf_leak_locals=0
debug.link_elf_obj_leak_locals=0
then
# kldload virtio_p9fs.ko
link_elf_obj: symbol p9_init_zones undefined
linker_load_file: /boot/kernel/virtio_p9fs.ko - unsupported file type
kldload: an error occurred while loading module virtio_p9fs.ko. Please check
dmesg(8) for more details.
The module's Makefile should have an EXPORT_SYMS= line that lists all of the
symbols to be intentionally exported.
Another option is to just set EXPORT_SYMS=YES. An explicit export list is
preferred over EXPORT_SYMS=YES, unless we actually want all symbols exported.
Referenced Bugs:
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=207898
[Bug 207898] kernel linker behaves differently on amd64 vs. i386
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