Set exception whitelist check as earlier check instead of last check.

src/processor/exploitability_linux.cc

Index: src/processor/exploitability_linux.cc
===================================================================
--- src/processor/exploitability_linux.cc	(revision 1468)
+++ src/processor/exploitability_linux.cc	(working copy)
@@ -82,10 +82,6 @@
     }
   }
 
-  // Check if the instruction pointer is in a valid instruction region
-  // by finding if it maps to an executable part of memory.
-  uint64_t instruction_ptr = 0;
-
   // Getting exception data. (It should exist for all minidumps.)
   MinidumpException *exception = dump_->GetException();
   if (exception == NULL) {
@@ -92,6 +88,21 @@
     BPLOG(INFO) << "No exception record.";
     return EXPLOITABILITY_ERR_PROCESSING;
   }
+  const MDRawExceptionStream *raw_exception_stream = exception->exception();
+  if (raw_exception_stream == NULL) {
+    BPLOG(INFO) << "No raw exception stream.";
+    return EXPLOITABILITY_ERR_PROCESSING;
+  }
+
+  // Checking for benign exceptions that caused the crash.
+  if (this->BenignCrashTrigger(raw_exception_stream)) {
+    return EXPLOITABILITY_NONE;
+  }
+
+  // Check if the instruction pointer is in a valid instruction region
+  // by finding if it maps to an executable part of memory.
+  uint64_t instruction_ptr = 0;
+
   const MinidumpContext *context = exception->GetContext();
   if (context == NULL) {
     BPLOG(INFO) << "No exception context.";
@@ -108,17 +119,6 @@
     return EXPLOITABILITY_HIGH;
   }
 
-  const MDRawExceptionStream *raw_exception_stream = exception->exception();
-  if (raw_exception_stream == NULL) {
-    BPLOG(INFO) << "No raw exception stream.";
-    return EXPLOITABILITY_ERR_PROCESSING;
-  }
-
-  // Checking for benign exceptions that caused the crash.
-  if (this->BenignCrashTrigger(raw_exception_stream)) {
-    return EXPLOITABILITY_NONE;
-  }
-
   return EXPLOITABILITY_INTERESTING;
 }