From: Pengcheng Yang yangpc@wangsu.com
[ Upstream commit f4dea9689c5fea3d07170c2cb0703e216f1a0922 ]
Using sizeof(nv) or strlen(nv)+1 is correct.
Fixes: c890063e4404 ("bpf: sample BPF_SOCKET_OPS_BASE_RTT program") Signed-off-by: Pengcheng Yang yangpc@wangsu.com Link: https://lore.kernel.org/r/1683276658-2860-1-git-send-email-yangpc@wangsu.com Signed-off-by: Alexei Starovoitov ast@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- samples/bpf/tcp_basertt_kern.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/samples/bpf/tcp_basertt_kern.c b/samples/bpf/tcp_basertt_kern.c index 9dba48c2b9207..66dd58f78d528 100644 --- a/samples/bpf/tcp_basertt_kern.c +++ b/samples/bpf/tcp_basertt_kern.c @@ -47,7 +47,7 @@ int bpf_basertt(struct bpf_sock_ops *skops) case BPF_SOCK_OPS_BASE_RTT: n = bpf_getsockopt(skops, SOL_TCP, TCP_CONGESTION, cong, sizeof(cong)); - if (!n && !__builtin_memcmp(cong, nv, sizeof(nv)+1)) { + if (!n && !__builtin_memcmp(cong, nv, sizeof(nv))) { /* Set base_rtt to 80us */ rv = 80; } else if (n) {