From mboxrd@z Thu Jan 1 00:00:00 1970 From: YueHaibing Subject: [PATCH net-next] net/smc: cast sizeof to int for comparison Date: Sat, 15 Sep 2018 18:00:36 +0800 Message-ID: <20180915100036.20100-1-yuehaibing@huawei.com> Mime-Version: 1.0 Content-Type: text/plain Cc: , , , YueHaibing To: , Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Comparing an int to a size, which is unsigned, causes the int to become unsigned, giving the wrong result. kernel_sendmsg can return a negative error code. Signed-off-by: YueHaibing --- net/smc/smc_clc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/smc/smc_clc.c b/net/smc/smc_clc.c index 83aba9a..fd0f5ce 100644 --- a/net/smc/smc_clc.c +++ b/net/smc/smc_clc.c @@ -446,7 +446,7 @@ int smc_clc_send_proposal(struct smc_sock *smc, int smc_type, vec[i++].iov_len = sizeof(trl); /* due to the few bytes needed for clc-handshake this cannot block */ len = kernel_sendmsg(smc->clcsock, &msg, vec, i, plen); - if (len < sizeof(pclc)) { + if (len < (int)sizeof(pclc)) { if (len >= 0) { reason_code = -ENETUNREACH; smc->sk.sk_err = -reason_code; -- 1.8.3.1