From: Zhu Yanjun <zyjzyj2000@xxxxxxxxx>
When ipv6.disable=1 is set in cmdline, ipv6 is actually disabled
in the stack. As such, the operations of ipv6 will fail.
So ipv6 features in addr should also be disabled.
Fixes: caf1e3ae9fa6 ("RDMA/core Introduce and use rdma_find_ndev_for_src_ip_rcu")
Suggested-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Signed-off-by: Zhu Yanjun <zyjzyj2000@xxxxxxxxx>
---
drivers/infiniband/core/addr.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 0abce004a959..6fa57b83c4b1 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -257,6 +257,9 @@ rdma_find_ndev_for_src_ip_rcu(struct net *net, const struct sockaddr *src_in)
break;
#if IS_ENABLED(CONFIG_IPV6)
case AF_INET6:
+ if (!ipv6_mod_enabled())
+ return ERR_PTR(-EPFNOSUPPORT);
+
for_each_netdev_rcu(net, dev) {
if (ipv6_chk_addr(net,
&((const struct sockaddr_in6 *)src_in)->sin6_addr,
@@ -424,6 +427,9 @@ static int addr6_resolve(struct sockaddr *src_sock,
struct flowi6 fl6;
struct dst_entry *dst;
+ if (!ipv6_mod_enabled())
+ return -EADDRNOTAVAIL;
+
memset(&fl6, 0, sizeof fl6);
fl6.daddr = dst_in->sin6_addr;
fl6.saddr = src_in->sin6_addr;
--
2.27.0
