[PATCH 5.10 487/575] Fix user namespace leak

From: Greg Kroah-Hartman
Date: Mon Nov 15 2021 - 20:58:33 EST


From: Alexey Gladkov <legion@xxxxxxxxxx>

[ Upstream commit d5f458a979650e5ed37212f6134e4ee2b28cb6ed ]

Fixes: 61ca2c4afd9d ("NFS: Only reference user namespace from nfs4idmap struct instead of cred")
Signed-off-by: Alexey Gladkov <legion@xxxxxxxxxx>
Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/nfs/nfs4idmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfs/nfs4idmap.c b/fs/nfs/nfs4idmap.c
index 8d8aba305ecca..f331866dd4182 100644
--- a/fs/nfs/nfs4idmap.c
+++ b/fs/nfs/nfs4idmap.c
@@ -487,7 +487,7 @@ nfs_idmap_new(struct nfs_client *clp)
err_destroy_pipe:
rpc_destroy_pipe_data(idmap->idmap_pipe);
err:
- get_user_ns(idmap->user_ns);
+ put_user_ns(idmap->user_ns);
kfree(idmap);
return error;
}
--
2.33.0