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netlink: fix lockdep splats 

With netlink_lookup() conversion to RCU, we need to use appropriate
rcu dereference in netlink_seq_socket_idx() & netlink_seq_next()

Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Fixes: e341694e3e ("netlink: Convert netlink_lookup() to use RCU protected hash table")
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2014-08-05 07:50:07 +02:00 committed by David S. Miller
parent 64a124edcc
commit 67a24ac18b
1 changed files with 2 additions and 2 deletions
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4
net/netlink/af_netlink.c
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@ -2899,7 +2899,7 @@ static struct sock *netlink_seq_socket_idx(struct seq_file *seq, loff_t pos)
for (i = 0; i < MAX_LINKS; i++) {
struct rhashtable *ht = &nl_table[i].hash;
const struct bucket_table *tbl = rht_dereference(ht->tbl, ht);
const struct bucket_table *tbl = rht_dereference_rcu(ht->tbl, ht);
for (j = 0; j < tbl->size; j++) {
rht_for_each_entry_rcu(nlk, tbl->buckets[j], node) {
@ -2950,7 +2950,7 @@ static void *netlink_seq_next(struct seq_file *seq, void *v, loff_t *pos)
do {
struct rhashtable *ht = &nl_table[i].hash;
const struct bucket_table *tbl = rht_dereference(ht->tbl, ht);
const struct bucket_table *tbl = rht_dereference_rcu(ht->tbl, ht);
for (; j < tbl->size; j++) {
rht_for_each_entry_rcu(nlk, tbl->buckets[j], node) {