From: Thorsten Blum <thorsten.blum@linux.dev>
Date: Mon, 30 Sep 2024 19:58:22 +0000 (+0200)
Subject: ipc/msg: replace one-element array with flexible array member
X-Git-Tag: v6.13-rc1~89^2~63
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=f9a4d8930f272fd76edc1f76062b5ca316bda25d;p=thirdparty%2Fkernel%2Flinux.git

ipc/msg: replace one-element array with flexible array member

Replace the deprecated one-element array with a modern flexible array
member in the struct compat_msgbuf.

There are no binary differences after this conversion.

Link: https://github.com/KSPP/linux/issues/79
Link: https://lkml.kernel.org/r/20240930195824.153648-2-thorsten.blum@linux.dev
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Cc: "Sun, Jiebin" <jiebin.sun@intel.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

diff --git a/ipc/msg.c b/ipc/msg.c
index fd08b3cb36d79..ee6af4fe52bff 100644
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -978,7 +978,7 @@ SYSCALL_DEFINE4(msgsnd, int, msqid, struct msgbuf __user *, msgp, size_t, msgsz,
 
 struct compat_msgbuf {
 	compat_long_t mtype;
-	char mtext[1];
+	char mtext[];
 };
 
 long compat_ksys_msgsnd(int msqid, compat_uptr_t msgp,