Btrfs: incremental send, fix invalid memory access

[platform/kernel/linux-starfive.git] / fs / nsfs.c

diff --git a/fs/nsfs.c b/fs/nsfs.c
index 323f492..f3db56e 100644 (file)
--- a/fs/nsfs.c
+++ b/fs/nsfs.c
@@ -196,9 +196,11 @@ int ns_get_name(char *buf, size_t size, struct task_struct *task,
 {
        struct ns_common *ns;
        int res = -ENOENT;
+       const char *name;
        ns = ns_ops->get(task);
        if (ns) {
-               res = snprintf(buf, size, "%s:[%u]", ns_ops->name, ns->inum);
+               name = ns_ops->real_ns_name ? : ns_ops->name;
+               res = snprintf(buf, size, "%s:[%u]", name, ns->inum);
                ns_ops->put(ns);
        }
        return res;