From: John Hodge <tpg@mutabah.net>
Date: Sun, 11 Aug 2013 03:07:38 +0000 (+0800)
Subject: Kernel/PTY - Fixed NULL deref in kernel pty
X-Git-Tag: rel0.15~280
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=47bed1216dd93c96fe58ec0932a5821691d6f16c;p=tpg%2Facess2.git

Kernel/PTY - Fixed NULL deref in kernel pty
---

diff --git a/KernelLand/Kernel/drv/pty.c b/KernelLand/Kernel/drv/pty.c
index 1d1bdf35..f9f62629 100644
--- a/KernelLand/Kernel/drv/pty.c
+++ b/KernelLand/Kernel/drv/pty.c
@@ -319,7 +319,7 @@ size_t PTY_int_WriteInput(tPTY *PTY, const char *Input, size_t Length)
 	Mutex_Release(&PTY->InputMutex);
 
 	VFS_MarkAvaliable(&PTY->ClientNode, 1);
-	if(ret < Length)
+	if(ret < Length && PTY->ServerNode)
 		VFS_MarkFull(PTY->ServerNode, 1);	
 
 	return ret;