If no enough buffer space available, but idmap_lookup have triggered
lookup_fn which calls cache_get and returns successfully. Then we
missed to call cache_put here which pairs with cache_get.
Signed-off-by: Guoqing Jiang <guoqing.jiang@xxxxxxxxx>
---
fs/nfsd/nfs4idmap.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/nfsd/nfs4idmap.c b/fs/nfsd/nfs4idmap.c
index 7a806ac13e31..7abddf7d8f6d 100644
--- a/fs/nfsd/nfs4idmap.c
+++ b/fs/nfsd/nfs4idmap.c
@@ -594,8 +594,10 @@ static __be32 idmap_id_to_name(struct xdr_stream *xdr,
ret = strlen(item->name);
WARN_ON_ONCE(ret > IDMAP_NAMESZ);
p = xdr_reserve_space(xdr, ret + 4);
- if (!p)
+ if (!p) {
+ cache_put(&item->h, nn->idtoname_cache);
return nfserr_resource;
+ }
p = xdr_encode_opaque(p, item->name, ret);
cache_put(&item->h, nn->idtoname_cache);
return 0;
--
2.35.3
