[PATCH 1/2] bpf: Fix warning of Using plain integer as NULL pointer

Jules Irenge
2022-09-03T18:56:22Z

This patch fixes a warning generated by Sparse

"Using plain integer as NULL pointer"

by replacing the offending 0 by NULL.

Signed-off-by: Jules Irenge <jbi.octave@gmail.com>
---
kernel/bpf/syscall.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 27760627370d..427b7e3829e0 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -598,7 +598,7 @@ void bpf_map_free_kptrs(struct bpf_map *map, void *map_value)
if (off_desc->type == BPF_KPTR_UNREF) {
u64 *p = (u64 *)btf_id_ptr;

- WRITE_ONCE(p, 0);
+ WRITE_ONCE(p, NULL);
continue;
}
old_ptr = xchg(btf_id_ptr, 0);
--
2.35.1