From: Wei Yongjun weiyongjun1@huawei.com
commit e0fe1123ab2b07d2cd5475660bd0b4e6993ffaa7 upstream.
Fix to return negative error code -EINVAL from some error handling case instead of 0, as done elsewhere in those functions.
Fixes: 9ab4807c84a4 ("mptcp: netlink: Add MPTCP_PM_CMD_ANNOUNCE") Fixes: 702c2f646d42 ("mptcp: netlink: allow userspace-driven subflow establishment") Cc: stable@vger.kernel.org Reviewed-by: Matthieu Baerts matthieu.baerts@tessares.net Signed-off-by: Wei Yongjun weiyongjun1@huawei.com Signed-off-by: Mat Martineau mathew.j.martineau@linux.intel.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/mptcp/pm_userspace.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 9e82250cbb70..0430415357ba 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -156,6 +156,7 @@ int mptcp_nl_cmd_announce(struct sk_buff *skb, struct genl_info *info)
if (addr_val.addr.id == 0 || !(addr_val.flags & MPTCP_PM_ADDR_FLAG_SIGNAL)) { GENL_SET_ERR_MSG(info, "invalid addr id or flags"); + err = -EINVAL; goto announce_err; }
@@ -282,6 +283,7 @@ int mptcp_nl_cmd_sf_create(struct sk_buff *skb, struct genl_info *info)
if (addr_l.id == 0) { NL_SET_ERR_MSG_ATTR(info->extack, laddr, "missing local addr id"); + err = -EINVAL; goto create_err; }
@@ -395,11 +397,13 @@ int mptcp_nl_cmd_sf_destroy(struct sk_buff *skb, struct genl_info *info)
if (addr_l.family != addr_r.family) { GENL_SET_ERR_MSG(info, "address families do not match"); + err = -EINVAL; goto destroy_err; }
if (!addr_l.port || !addr_r.port) { GENL_SET_ERR_MSG(info, "missing local or remote port"); + err = -EINVAL; goto destroy_err; }