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>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c
index 5c865e2d299e..799ff6ef28b8 100644
--- 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;