FATAL: modpost: GPL-incompatible module zfs.ko uses GPL-only symbol 'perf_trace_buf_alloc'

[hooklab]

System information

ubuntu Linux 5.8.18 #2 SMP Wed Dec 15 20:56:17 CST 2021 x86_64 x86_64 x86_64 GNU/Linux

Describe the problem you're observing

FATAL: modpost: GPL-incompatible module zfs.ko uses GPL-only symbol 'perf_trace_buf_alloc'

kernel: module: x86/modules: Skipping invalid relocation target, existing value is nonzero for type 1, loc 0000000029b3b30c, val ffffffffc0fca847

Describe how to reproduce the problem

first: vim META
change : License: GPL
But it doesn't work
then:
vim module/os/linux/zfs/zfs_ioctl_os.c
remove: MODULE_LICENSE("Lua: MIT");
MODULE_LICENSE("zstd: Dual BSD/GPL");
MODULE_LICENSE("Dual BSD/GPL");
just Just keep
MODULE_LICENSE(ZFS_META_LICENSE);
recompile zfs
Compile successfully this time , but modprobe error:
"kernel: module: x86/modules: Skipping invalid relocation target, existing value is nonzero for type 1, loc 0000000029b3b30c, val ffffffffc0fca847"

Include any warning/errors/backtraces from the system logs

FATAL: modpost: GPL-incompatible module zfs.ko uses GPL-only symbol 'perf_trace_buf_alloc'

[hooklab]

I know why. I'm shutting it down, okay