sunrpc: fix memory leak in unix_gid cache.

When we look up an entry in the uid->gidlist cache, we take
a reference to the content but don't drop the reference to the
cache entry.  So it never gets freed.

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>

diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index 5c865e2d299e86bd48eecd62aed16794faaf1566..799ff6ef28b8d7d5219c90b1a6b4337f5307c2d6 100644 (file)
--- a/net/sunrpc/svcauth_unix.c
+++ b/net/sunrpc/svcauth_unix.c
@@ -658,6 +658,7 @@ static int unix_gid_find(uid_t uid, struct group_info **gip,
        case 0:
                *gip = ug->gi;
                get_group_info(*gip);
+               cache_put(&ug->h, &unix_gid_cache);
                return 0;
        default:
                return -EAGAIN;