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So we will miss umask strip, ie use ext4 with noacl or disblae CONFIG_EXT4_FS_POSIX_ACL. Reported-by: Christian Brauner (Microsoft) Signed-off-by: Yang Xu --- fs/namei.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/namei.c b/fs/namei.c index 3f1829b3ab5b..bbc7c950bbdc 100644 --- a/fs/namei.c +++ b/fs/namei.c @@ -3521,6 +3521,8 @@ struct dentry *vfs_tmpfile(struct user_namespace *mnt_userns, child = d_alloc(dentry, &slash_name); if (unlikely(!child)) goto out_err; + if (!IS_POSIXACL(dir)) + mode &= ~current_umask(); error = dir->i_op->tmpfile(mnt_userns, dir, child, mode); if (error) goto out_err;