Duplicate symbol error in Linux 6.13 with builtin module

[12101111]

System information

Type	Version/Name
Distribution Name	Gentoo Linux
Distribution Version	2.17
Kernel Version	6.13 rc6
Architecture	arm64
OpenZFS Version	2.3.0 rc5

Describe the problem you're observing

#16831 say no code change is needed for Linux 6.13, so I test it.

When build zfs with --enable-linux-builtin and enable CONFIG_ZFS=y, CONFIG_BPF_SYSCALL=y, I got 3 duplicate symbol error.

The code change in Linux: torvalds/linux@b795379

Describe how to reproduce the problem

Build bpf and zfs as builtin module in Linux 6.13

Include any warning/errors/backtraces from the system logs

  LD      vmlinux.o
ld.lld: error: duplicate symbol: range_tree_destroy
>>> defined at range_tree.c
>>>            kernel/bpf/range_tree.o:(range_tree_destroy) in archive vmlinux.a
>>> defined at range_tree.c
>>>            fs/zfs/zfs/range_tree.o:(.text.range_tree_destroy+0x8) in archive vmlinux.a

ld.lld: error: duplicate symbol: range_tree_find
>>> defined at range_tree.c
>>>            kernel/bpf/range_tree.o:(range_tree_find) in archive vmlinux.a
>>> defined at range_tree.c
>>>            fs/zfs/zfs/range_tree.o:(.text.range_tree_find+0x8) in archive vmlinux.a

ld.lld: error: duplicate symbol: range_tree_clear
>>> defined at range_tree.c
>>>            kernel/bpf/range_tree.o:(range_tree_clear) in archive vmlinux.a
>>> defined at range_tree.c
>>>            fs/zfs/zfs/range_tree.o:(.text.range_tree_clear+0x8) in archive vmlinux.a
make[2]: *** [scripts/Makefile.vmlinux_o:65: vmlinux.o] Error 1

[tonyhutter]

Thanks for reporting this. We'll need to rename our functions to zfs_range_tree or something.