Merging upstream version 6.9.7.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 15 insertions, 7 deletions

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index 7a437f0d4..84b5d1ccf 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -1683,6 +1683,7 @@ static int inet_fill_ifaddr(struct sk_buff *skb, const struct in_ifaddr *ifa,
 	struct nlmsghdr  *nlh;
 	unsigned long tstamp;
 	u32 preferred, valid;
+	u32 flags;
 
 	nlh = nlmsg_put(skb, args->portid, args->seq, args->event, sizeof(*ifm),
 			args->flags);
@@ -1692,7 +1693,13 @@ static int inet_fill_ifaddr(struct sk_buff *skb, const struct in_ifaddr *ifa,
 	ifm = nlmsg_data(nlh);
 	ifm->ifa_family = AF_INET;
 	ifm->ifa_prefixlen = ifa->ifa_prefixlen;
-	ifm->ifa_flags = READ_ONCE(ifa->ifa_flags);
+
+	flags = READ_ONCE(ifa->ifa_flags);
+	/* Warning : ifm->ifa_flags is an __u8, it holds only 8 bits.
+	 * The 32bit value is given in IFA_FLAGS attribute.
+	 */
+	ifm->ifa_flags = (__u8)flags;
+
 	ifm->ifa_scope = ifa->ifa_scope;
 	ifm->ifa_index = ifa->ifa_dev->dev->ifindex;
 
@@ -1701,7 +1708,7 @@ static int inet_fill_ifaddr(struct sk_buff *skb, const struct in_ifaddr *ifa,
 		goto nla_put_failure;
 
 	tstamp = READ_ONCE(ifa->ifa_tstamp);
-	if (!(ifm->ifa_flags & IFA_F_PERMANENT)) {
+	if (!(flags & IFA_F_PERMANENT)) {
 		preferred = READ_ONCE(ifa->ifa_preferred_lft);
 		valid = READ_ONCE(ifa->ifa_valid_lft);
 		if (preferred != INFINITY_LIFE_TIME) {
@@ -1732,7 +1739,7 @@ static int inet_fill_ifaddr(struct sk_buff *skb, const struct in_ifaddr *ifa,
 	     nla_put_string(skb, IFA_LABEL, ifa->ifa_label)) ||
 	    (ifa->ifa_proto &&
 	     nla_put_u8(skb, IFA_PROTO, ifa->ifa_proto)) ||
-	    nla_put_u32(skb, IFA_FLAGS, ifm->ifa_flags) ||
+	    nla_put_u32(skb, IFA_FLAGS, flags) ||
 	    (ifa->ifa_rt_priority &&
 	     nla_put_u32(skb, IFA_RT_PRIORITY, ifa->ifa_rt_priority)) ||
 	    put_cacheinfo(skb, READ_ONCE(ifa->ifa_cstamp), tstamp,
@@ -1875,10 +1882,11 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
 			goto done;
 
 		if (fillargs.ifindex) {
-			err = -ENODEV;
 			dev = dev_get_by_index_rcu(tgt_net, fillargs.ifindex);
-			if (!dev)
+			if (!dev) {
+				err = -ENODEV;
 				goto done;
+			}
 			in_dev = __in_dev_get_rcu(dev);
 			if (!in_dev)
 				goto done;
@@ -1890,7 +1898,7 @@ static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
 
 	cb->seq = inet_base_seq(tgt_net);
 
-	for_each_netdev_dump(net, dev, ctx->ifindex) {
+	for_each_netdev_dump(tgt_net, dev, ctx->ifindex) {
 		in_dev = __in_dev_get_rcu(dev);
 		if (!in_dev)
 			continue;
@@ -2793,7 +2801,7 @@ void __init devinet_init(void)
 	rtnl_register(PF_INET, RTM_NEWADDR, inet_rtm_newaddr, NULL, 0);
 	rtnl_register(PF_INET, RTM_DELADDR, inet_rtm_deladdr, NULL, 0);
 	rtnl_register(PF_INET, RTM_GETADDR, NULL, inet_dump_ifaddr,
-		      RTNL_FLAG_DUMP_UNLOCKED);
+		      RTNL_FLAG_DUMP_UNLOCKED | RTNL_FLAG_DUMP_SPLIT_NLM_DONE);
 	rtnl_register(PF_INET, RTM_GETNETCONF, inet_netconf_get_devconf,
 		      inet_netconf_dump_devconf,
 		      RTNL_FLAG_DOIT_UNLOCKED | RTNL_FLAG_DUMP_UNLOCKED);