From: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx>
commit 5b74c690e1c55953ec99fd9dab74f72dbee4fe95 upstream.
Kernel Test Robot complained about missing static storage class
annotation for bpf_kptr_xchg_proto variable.
sparse: symbol 'bpf_kptr_xchg_proto' was not declared. Should it be static?
This caused by missing extern definition in the header. Add it to
suppress the sparse warning.
Fixes: c0a5a21c25f3 ("bpf: Allow storing referenced kptr in map")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220511194654.765705-2-memxor@xxxxxxxxx
Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/bpf.h | 1 +
1 file changed, 1 insertion(+)
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -2228,6 +2228,7 @@ extern const struct bpf_func_proto bpf_f
extern const struct bpf_func_proto bpf_loop_proto;
extern const struct bpf_func_proto bpf_strncmp_proto;
extern const struct bpf_func_proto bpf_copy_from_user_task_proto;
+extern const struct bpf_func_proto bpf_kptr_xchg_proto;
const struct bpf_func_proto *tracing_prog_func_proto(
enum bpf_func_id func_id, const struct bpf_prog *prog);
