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-rw-r--r--fs/namespace.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/fs/namespace.c b/fs/namespace.c
index 2b12b7a9455d..acc5583764dc 100644
--- a/fs/namespace.c
+++ b/fs/namespace.c
@@ -1669,8 +1669,11 @@ struct vfsmount *collect_mounts(struct path *path)
{
struct mount *tree;
namespace_lock();
- tree = copy_tree(real_mount(path->mnt), path->dentry,
- CL_COPY_ALL | CL_PRIVATE);
+ if (!check_mnt(real_mount(path->mnt)))
+ tree = ERR_PTR(-EINVAL);
+ else
+ tree = copy_tree(real_mount(path->mnt), path->dentry,
+ CL_COPY_ALL | CL_PRIVATE);
namespace_unlock();
if (IS_ERR(tree))
return ERR_CAST(tree);