X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=KernelLand%2FModules%2FIPStack%2Fbuffer.c;h=ac27976163526fbea260314764aa2d09fe4617bb;hb=7cb0880c700b1acaf10d33e9b15dccaff1793a5c;hp=b3c8093ee24f9de51dc8df28f2021bf134d6513a;hpb=326d03e0dc49158f24ab14c92b7245d860ecf7ed;p=tpg%2Facess2.git

diff --git a/KernelLand/Modules/IPStack/buffer.c b/KernelLand/Modules/IPStack/buffer.c
index b3c8093e..ac279761 100644
--- a/KernelLand/Modules/IPStack/buffer.c
+++ b/KernelLand/Modules/IPStack/buffer.c
@@ -119,6 +119,13 @@ size_t IPStack_Buffer_GetData(tIPStackBuffer *Buffer, void *Dest, size_t MaxByte
 	for( int i = Buffer->nSubBuffers; i -- && rem_space != 0; )
 	{
 		len = MIN(Buffer->SubBuffers[i].PreLength, rem_space);
+		#if !DISABLE_ASSERTS
+		if( !CheckMem(Buffer->SubBuffers[i].Data, len) ) {
+			Log_Error("IPStack", "Buffer pre %i invalid (%p+0x%x)",
+				i, Buffer->SubBuffers[i].Data, len);
+			return 0;
+		}
+		#endif
 		memcpy(dest,
 			Buffer->SubBuffers[i].Data,
 			len
@@ -132,10 +139,9 @@ size_t IPStack_Buffer_GetData(tIPStackBuffer *Buffer, void *Dest, size_t MaxByte
 			continue ;
 		
 		len = MIN(Buffer->SubBuffers[i].PostLength, rem_space);
-		memcpy(dest,
-			(Uint8*)Buffer->SubBuffers[i].Data + Buffer->SubBuffers[i].PreLength,
-			len
-			);
+		void *ptr = (Uint8*)Buffer->SubBuffers[i].Data + Buffer->SubBuffers[i].PreLength;
+		ASSERT( CheckMem(ptr, len) );
+		memcpy(dest, ptr, len);
 		dest += len;
 		rem_space -= len;
 	}