From 4824ea68a9eab99314e33c134e8f0b5e13899b18 Mon Sep 17 00:00:00 2001
From: "chao.an" <anchao@xiaomi.com>
Date: Thu, 17 Feb 2022 16:52:52 +0800
Subject: [PATCH] libs/libnx: handle the bad message correctly

Signed-off-by: chao.an <anchao@xiaomi.com>
---
 libs/libnx/nxmu/nx_eventhandler.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/libs/libnx/nxmu/nx_eventhandler.c b/libs/libnx/nxmu/nx_eventhandler.c
index 9dadde485f..d9be5d09f9 100644
--- a/libs/libnx/nxmu/nx_eventhandler.c
+++ b/libs/libnx/nxmu/nx_eventhandler.c
@@ -146,7 +146,11 @@ int nx_eventhandler(NXHANDLE handle)
     }
   while (nbytes < 0);
 
-  DEBUGASSERT(nbytes >= sizeof(struct nxclimsg_s));
+  if (nbytes < sizeof(struct nxclimsg_s))
+    {
+      _NX_SETERRNO(EBADMSG);
+      return ERROR;
+    }
 
   /* Dispatch the message appropriately */