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Date: Mon, 7 Jun 2021 06:59:44 -0600 From: David Ahern <dsahern@...il.com> To: Zheng Yongjun <zhengyongjun3@...wei.com>, davem@...emloft.net, yoshfuji@...ux-ipv6.org, dsahern@...nel.org, kuba@...nel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH net-next] net: ipv4: use BUG_ON instead of if condition followed by BUG On 6/7/21 3:11 AM, Zheng Yongjun wrote: > Use BUG_ON instead of if condition followed by BUG in inet_set_link_af. > > This issue was detected with the help of Coccinelle. > > Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com> > --- > net/ipv4/devinet.c | 3 +-- > 1 file changed, 1 insertion(+), 2 deletions(-) > > diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c > index 2e35f68da40a..e3e1e8a600ef 100644 > --- a/net/ipv4/devinet.c > +++ b/net/ipv4/devinet.c > @@ -1988,8 +1988,7 @@ static int inet_set_link_af(struct net_device *dev, const struct nlattr *nla, > if (!in_dev) > return -EAFNOSUPPORT; > > - if (nla_parse_nested_deprecated(tb, IFLA_INET_MAX, nla, NULL, NULL) < 0) > - BUG(); > + BUG_ON(nla_parse_nested_deprecated(tb, IFLA_INET_MAX, nla, NULL, NULL) < 0); > > if (tb[IFLA_INET_CONF]) { > nla_for_each_nested(a, tb[IFLA_INET_CONF], rem) > no reason to have a BUG here at all. Catch the error and return.
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