gcc-6.2.1 gives the following warning:
kernel/bpf/bpf_lru_list.c: In function ‘__bpf_lru_list_rotate_inactive.isra.3’:
kernel/bpf/bpf_lru_list.c:201:28: warning: ‘next’ may be used uninitialized in
this function [-Wmaybe-uninitialized]
The "next" is currently initialized in the while() loop which must have >=1
iterations.
This patch initializes next to get rid of the compiler warning.
Fixes: 3a08c2fd7634 ("bpf: LRU List")
Reported-by: David Miller <da...@davemloft.net>
Signed-off-by: Martin KaFai Lau <ka...@fb.com>
---
kernel/bpf/bpf_lru_list.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/bpf/bpf_lru_list.c b/kernel/bpf/bpf_lru_list.c
index bfebff0..89b7ef4 100644
--- a/kernel/bpf/bpf_lru_list.c
+++ b/kernel/bpf/bpf_lru_list.c
@@ -170,7 +170,7 @@ static void __bpf_lru_list_rotate_inactive(struct bpf_lru
*lru,
struct bpf_lru_list *l)
{
struct list_head *inactive = &l->lists[BPF_LRU_LIST_T_INACTIVE];
- struct list_head *cur, *next, *last;
+ struct list_head *cur, *last, *next = inactive;
struct bpf_lru_node *node;
unsigned int i = 0;
--
2.5.1
