From 97831e31e43bb023d208b2344546a4e51e580dc6 Mon Sep 17 00:00:00 2001 From: Ruben Devos Date: Sun, 1 Jun 2025 19:18:55 +0200 Subject: smb: client: add NULL check in automount_fullpath page is checked for null in __build_path_from_dentry_optional_prefix when tcon->origin_fullpath is not set. However, the check is missing when it is set. Add a check to prevent a potential NULL pointer dereference. Signed-off-by: Ruben Devos Cc: stable@vger.kernel.org Signed-off-by: Steve French --- fs/smb/client/namespace.c | 3 +++ 1 file changed, 3 insertions(+) --- a/fs/smb/client/namespace.c +++ b/fs/smb/client/namespace.c @@ -146,6 +146,9 @@ static char *automount_fullpath(struct d } spin_unlock(&tcon->tc_lock); + if (unlikely(!page)) + return ERR_PTR(-ENOMEM); + s = dentry_path_raw(dentry, page, PATH_MAX); if (IS_ERR(s)) return s;