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bpf: Fix compilation warning in __bpf_lru_list_rotate_inactive 

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: 3a08c2fd76 ("bpf: LRU List")
Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Martin KaFai Lau 2016-11-15 11:00:04 -08:00 committed by David S. Miller
parent 46738b1317
commit 2874aa2e46
1 changed files with 1 additions and 1 deletions
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2
kernel/bpf/bpf_lru_list.c
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@ -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;