[PATCH 6.12.y] bpf: Fix BPF_INTERNAL namespace import

[Xi Ruoyao]

The commit cdd30ebb1b9f ("module: Convert symbol namespace to string
literal") makes the grammar of MODULE_IMPORT_NS and EXPORT_SYMBOL_NS
different between the stable branches and the mainline.  But when
the commit 955f9ede52b8 ("bpf: Add namespace to BPF internal symbols")
was backported from mainline, only EXPORT_SYMBOL_NS instances are
adapted, leaving the MODULE_IMPORT_NS instance with the "new" grammar
and causing the module fails to build:

    ERROR: modpost: module bpf_preload uses symbol bpf_link_get_from_fd from namespace BPF_INTERNAL, but does not import it.
    ERROR: modpost: module bpf_preload uses symbol kern_sys_bpf from namespace BPF_INTERNAL, but does not import it.

Reported-by: Mingcong Bai <jeffbai@xxxxxxx>
Reported-by: Alex Davis <alex47794@xxxxxxxxx>
Closes: https://lore.kernel.org/all/CADiockBKBQTVqjA5G+RJ9LBwnEnZ8o0odYnL=LBZ_7QN=_SZ7A@xxxxxxxxxxxxxx/
Fixes: 955f9ede52b8 ("bpf: Add namespace to BPF internal symbols")
Signed-off-by: Xi Ruoyao <xry111@xxxxxxxxxxx>
---
 kernel/bpf/preload/bpf_preload_kern.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/preload/bpf_preload_kern.c b/kernel/bpf/preload/bpf_preload_kern.c
index 56a81df7a9d7..fdad0eb308fe 100644
--- a/kernel/bpf/preload/bpf_preload_kern.c
+++ b/kernel/bpf/preload/bpf_preload_kern.c
@@ -89,5 +89,5 @@ static void __exit fini(void)
 }
 late_initcall(load);
 module_exit(fini);
-MODULE_IMPORT_NS("BPF_INTERNAL");
+MODULE_IMPORT_NS(BPF_INTERNAL);
 MODULE_LICENSE("GPL");
-- 
2.49.0