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ipv6: properly check return value in inet6_dump_all() 

Make sure we call fib6_dump_end() if it happens that skb->len
is zero. rtnl_dump_all() can reset cb->args on the next loop
iteration there.

Fixes: 08e814c9e8 ("net/ipv6: Bail early if user only wants cloned entries")
Fixes: ae677bbb44 ("net: Don't return invalid table id error when dumping all families")
Signed-off-by: Alexey Kodanev <alexey.kodanev@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alexey Kodanev 2018-11-02 19:11:05 +03:00 committed by David S. Miller
parent 5e1acb4afa
commit e22d0bfa09
1 changed files with 2 additions and 2 deletions
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4
net/ipv6/ip6_fib.c
View File

@ -591,7 +591,7 @@ static int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb)
/* fib entries are never clones */
if (arg.filter.flags & RTM_F_CLONED)
return skb->len;
goto out;
w = (void *)cb->args[2];
if (!w) {
@ -621,7 +621,7 @@ static int inet6_dump_fib(struct sk_buff *skb, struct netlink_callback *cb)
tb = fib6_get_table(net, arg.filter.table_id);
if (!tb) {
if (arg.filter.dump_all_families)
return skb->len;
goto out;
NL_SET_ERR_MSG_MOD(cb->extack, "FIB table does not exist");
return -ENOENT;