From d66b04e529f70665ae40171849d590ecabea66f1 Mon Sep 17 00:00:00 2001
From: Alja Mrak-Tadel <amraktadel@ucsd.edu>
Date: Fri, 10 Jun 2016 14:34:13 -0700
Subject: [PATCH] protect against invalid reads: check IO has relinquished
 File.

---
 src/XrdFileCache/XrdFileCache.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/XrdFileCache/XrdFileCache.cc b/src/XrdFileCache/XrdFileCache.cc
index ced8ab84cab..897a53a952c 100644
--- a/src/XrdFileCache/XrdFileCache.cc
+++ b/src/XrdFileCache/XrdFileCache.cc
@@ -305,7 +305,7 @@ File* Cache::GetFileWithLocalPath(std::string path, IO* iIo)
    XrdSysMutexHelper lock(&m_active_mutex);
    for ( std::vector<DiskNetIO>::iterator it = m_active.begin(); it != m_active.end(); ++it)
    {
-      if (!strcmp(path.c_str(), it->file->lPath()))
+      if (it->file && (!strcmp(path.c_str(), it->file->lPath())))
       {
          File *ff = it->file;
          it->io->RelinquishFile(ff);