add overflow check for chunk and block size and file chunkPosition_ and bufferPosition_

Author: smorovic

EventFilter/Utilities/interface/FedRawDataInputSource.h

@@ -88,6 +88,8 @@ class FedRawDataInputSource : public edm::RawInputSource {
 
   std::string defPath_;
 
+  unsigned int paramChunkSize_;   // chunk size in MB
+  unsigned int paramBlockSize_;   // read/write block size in MB
   unsigned int eventChunkSize_;   // for buffered read-ahead
   unsigned int eventChunkBlock_;  // how much read(2) asks at the time
   unsigned int readBlocks_;

EventFilter/Utilities/src/FedRawDataInputSource.cc

@@ -53,8 +53,8 @@ using namespace edm::streamer;
 FedRawDataInputSource::FedRawDataInputSource(edm::ParameterSet const& pset, edm::InputSourceDescription const& desc)
     : edm::RawInputSource(pset, desc),
       defPath_(pset.getUntrackedParameter<std::string>("buDefPath", "")),
-      eventChunkSize_(pset.getUntrackedParameter<unsigned int>("eventChunkSize", 32) * 1048576),
-      eventChunkBlock_(pset.getUntrackedParameter<unsigned int>("eventChunkBlock", 32) * 1048576),
+      paramChunkSize_(pset.getUntrackedParameter<unsigned int>("eventChunkSize", 32)),
+      paramBlockSize_(pset.getUntrackedParameter<unsigned int>("eventChunkBlock", 32)),
       numConcurrentReads_(pset.getUntrackedParameter<int>("numConcurrentReads", -1)),
       numBuffers_(pset.getUntrackedParameter<unsigned int>("numBuffers", 2)),
       maxBufferedFiles_(pset.getUntrackedParameter<unsigned int>("maxBufferedFiles", 2)),
@@ -77,6 +77,17 @@ FedRawDataInputSource::FedRawDataInputSource(edm::ParameterSet const& pset, edm:
       eventsThisLumi_(0) {
   char thishost[256];
   gethostname(thishost, 255);
+
+  //ensure 32-bit buffer limits
+  if (paramChunkSize_ > 4095)
+    throw cms::Exception("FedRawDataInputSource::fillFEDRawDataCollection")
+        << "Invalid chunk size of " << paramChunkSize_ << " MB. Only less than 4GB is supported.";
+  if (paramBlockSize_ > 4095)
+    throw cms::Exception("FedRawDataInputSource::fillFEDRawDataCollection")
+        << "Invalid block size of " << paramBlockSize_ << " MB. Only less than 4GB is supported.";
+  eventChunkSize_ = paramChunkSize_ << 20;
+  eventChunkBlock_ = paramBlockSize_ << 20;
+
   edm::LogInfo("FedRawDataInputSource") << "Construction. read-ahead chunk size -: " << std::endl
                                         << (eventChunkSize_ / 1048576) << " MB on host " << thishost;
 
@@ -476,6 +487,13 @@ inline evf::EvFDaqDirector::FileStatus FedRawDataInputSource::getNextEvent() {
     //advance buffer position to skip file header (chunk will be acquired later)
     currentFile_->chunkPosition_ += currentFile_->rawHeaderSize_;
     currentFile_->bufferPosition_ += currentFile_->rawHeaderSize_;
+
+    if (currentFile_->chunkPosition_ > UINT32_MAX)
+      throw cms::Exception("FedRawDataInputSource::getNextEvent")
+          << "chunkPosition_ overflow " << currentFile_->chunkPosition_;
+    if (currentFile_->bufferPosition_ > UINT32_MAX)
+      throw cms::Exception("FedRawDataInputSource::getNextEvent")
+          << "bufferPosition_ overflow " << currentFile_->bufferPosition_;
   }
 
   //file is too short
@@ -532,6 +550,11 @@ inline evf::EvFDaqDirector::FileStatus FedRawDataInputSource::getNextEvent() {
       chunkIsFree_ = true;
     } else {
       //header was contiguous, but check if payload fits the chunk
+
+      if (currentFile_->chunkPosition_ > UINT32_MAX)
+        throw cms::Exception("FedRawDataInputSource::getNextEvent")
+            << "chunkPosition_ overflow " << currentFile_->chunkPosition_;
+
       if (eventChunkSize_ - (uint32_t)currentFile_->chunkPosition_ < msgSize) {
         //rewind to header start position
         currentFile_->rewindChunk(FRDHeaderVersionSize[detectedFRDversion_]);
@@ -1528,6 +1551,11 @@ void FedRawDataInputSource::readNextChunkIntoBuffer(InputFile* file) {
       }
     } else {
       //event didn't fit in last chunk, so leftover must be moved to the beginning and completed
+
+      if (file->chunkPosition_ > UINT32_MAX)
+        throw cms::Exception("FedRawDataInputSource::readNextChunkIntoBuffer")
+            << "chunkPosition_ overflow " << file->chunkPosition_;
+
       uint32_t existingSizeLeft = eventChunkSize_ - (uint32_t)file->chunkPosition_;
       memmove((void*)file->chunks_[0]->buf_, file->chunks_[0]->buf_ + file->chunkPosition_, existingSizeLeft);