MAINT-2124 Texture allocation issues

2 files changed, 39 insertions, 18 deletions

diff --git a/indra/newview/lltexturecache.cpp b/indra/newview/lltexturecache.cpp
index 435d833345..6da6aba4fb 100644
--- a/indra/newview/lltexturecache.cpp
+++ b/indra/newview/lltexturecache.cpp
@@ -452,27 +452,38 @@ bool LLTextureCacheRemoteWorker::doRead()
 		size = llmin(size, mDataSize);
 		// Allocate the read buffer
 		mReadData = (U8*)ALLOCATE_MEM(LLImageBase::getPrivatePool(), size);
-		S32 bytes_read = LLAPRFile::readEx(mCache->mHeaderDataFileName, 
-											 mReadData, offset, size, mCache->getLocalAPRFilePool());
-		if (bytes_read != size)
+		if (mReadData)
+		{
+			S32 bytes_read = LLAPRFile::readEx(mCache->mHeaderDataFileName, 
+												 mReadData, offset, size, mCache->getLocalAPRFilePool());
+			if (bytes_read != size)
+			{
+				LL_WARNS() << "LLTextureCacheWorker: "  << mID
+						<< " incorrect number of bytes read from header: " << bytes_read
+						<< " / " << size << LL_ENDL;
+				FREE_MEM(LLImageBase::getPrivatePool(), mReadData);
+				mReadData = NULL;
+				mDataSize = -1; // failed
+				done = true;
+			}
+			// If we already read all we expected, we're actually done
+			if (mDataSize <= bytes_read)
+			{
+				done = true;
+			}
+			else
+			{
+				mState = BODY;
+			}
+		}
+		else
 		{
 			LL_WARNS() << "LLTextureCacheWorker: "  << mID
-					<< " incorrect number of bytes read from header: " << bytes_read
-					<< " / " << size << LL_ENDL;
-			FREE_MEM(LLImageBase::getPrivatePool(), mReadData);
+				<< " failed to allocate memory for reading: " << mDataSize << LL_ENDL;
 			mReadData = NULL;
 			mDataSize = -1; // failed
 			done = true;
 		}
-		// If we already read all we expected, we're actually done
-		if (mDataSize <= bytes_read)
-		{
-			done = true;
-		}
-		else
-		{
-			mState = BODY;
-		}
 	}
 
 	// Fourth state / stage : read the rest of the data from the UUID based cached file
diff --git a/indra/newview/lltexturefetch.cpp b/indra/newview/lltexturefetch.cpp
index f917faadd4..1f7796e6d0 100644
--- a/indra/newview/lltexturefetch.cpp
+++ b/indra/newview/lltexturefetch.cpp
@@ -1760,7 +1760,17 @@ bool LLTextureFetchWorker::doWork(S32 param)
 				mRequestedSize -= src_offset;			// Make requested values reflect useful part
 				mRequestedOffset += src_offset;
 			}
-			
+
+			U8 * buffer = (U8 *)ALLOCATE_MEM(LLImageBase::getPrivatePool(), total_size);
+			if (!buffer)
+			{
+				// abort. If we have no space for packet, we have not enough space to decode image
+				setState(DONE);
+				LL_WARNS(LOG_TXT) << mID << " abort: out of memory" << LL_ENDL;
+				releaseHttpSemaphore();
+				return true;
+			}
+
 			if (mFormattedImage.isNull())
 			{
 				// For now, create formatted image based on extension
@@ -1780,10 +1790,10 @@ bool LLTextureFetchWorker::doWork(S32 param)
 			{
 				mFileSize = total_size + 1 ; //flag the file is not fully loaded.
 			}
-			
-			U8 * buffer = (U8 *) ALLOCATE_MEM(LLImageBase::getPrivatePool(), total_size);
+
 			if (cur_size > 0)
 			{
+				// Copy previously collected data into buffer
 				memcpy(buffer, mFormattedImage->getData(), cur_size);
 			}
 			mHttpBufferArray->read(src_offset, (char *) buffer + cur_size, append_size);