rhashtable: Fix read-side crash during rehash
This patch fixes a typo rhashtable_lookup_compare where we fail
to recompute the hash when looking up the new table. This causes
elements to be missed and potentially a crash during a resize.
Reported-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/lib/rhashtable.c b/lib/rhashtable.c
index adea791..fc0d451 100644
--- a/lib/rhashtable.c
+++ b/lib/rhashtable.c
@@ -606,8 +606,8 @@
rcu_read_lock();
tbl = rht_dereference_rcu(ht->tbl, ht);
- hash = key_hashfn(ht, tbl, key);
restart:
+ hash = key_hashfn(ht, tbl, key);
rht_for_each_rcu(he, tbl, hash) {
if (!compare(rht_obj(ht, he), arg))
continue;