From: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@gmail.com>
Date: Tue, 11 Oct 2022 20:23:14 +0000 (+1300)
Subject: dlm: replace one-element array with fixed size array
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=d96d0f9617793b6cd95b9b9a8fef66f69f8f6b1b;p=linux.git

dlm: replace one-element array with fixed size array

One-element arrays are deprecated. So, replace one-element array with
fixed size array member in struct dlm_ls, and refactor the rest of the
code, accordingly.

Link: https://github.com/KSPP/linux/issues/79
Link: https://github.com/KSPP/linux/issues/228
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101836
Link: https://lore.kernel.org/lkml/Y0W5jkiXUkpNl4ap@mail.google.com/

Signed-off-by: Paulo Miguel Almeida <paulo.miguel.almeida.rodenas@gmail.com>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Teigland <teigland@redhat.com>
---

diff --git a/fs/dlm/dlm_internal.h b/fs/dlm/dlm_internal.h
index e34c3d2639a5a..94fadb619ba09 100644
--- a/fs/dlm/dlm_internal.h
+++ b/fs/dlm/dlm_internal.h
@@ -670,7 +670,7 @@ struct dlm_ls {
 	void			*ls_ops_arg;
 
 	int			ls_namelen;
-	char			ls_name[1];
+	char			ls_name[DLM_LOCKSPACE_LEN + 1];
 };
 
 /*
diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index bae050df7abff..9479c81109796 100644
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -473,7 +473,7 @@ static int new_lockspace(const char *name, const char *cluster,
 
 	error = -ENOMEM;
 
-	ls = kzalloc(sizeof(struct dlm_ls) + namelen, GFP_NOFS);
+	ls = kzalloc(sizeof(*ls), GFP_NOFS);
 	if (!ls)
 		goto out;
 	memcpy(ls->ls_name, name, namelen);