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ila: Fix rhashtable walker list corruption 

ila_xlat_nl_cmd_flush uses rhashtable walkers allocated from the
stack but it never frees them.  This corrupts the walker list of
the hash table.

This patch fixes it.

Reported-by: syzbot+dae72a112334aa65a159@syzkaller.appspotmail.com
Fixes: b6e71bdebb ("ila: Flush netlink command to clear xlat...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Herbert Xu 2019-03-26 13:50:14 +08:00 committed by David S. Miller
parent 79706ced7a
commit b5f9bd15b8
1 changed files with 1 additions and 0 deletions
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net/ipv6/ila/ila_xlat.c
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@ -417,6 +417,7 @@ int ila_xlat_nl_cmd_flush(struct sk_buff *skb, struct genl_info *info)
done:
rhashtable_walk_stop(&iter);
rhashtable_walk_exit(&iter);
return ret;
}