diff --git a/src/google_breakpad/common/minidump_exception_linux.h b/src/google_breakpad/common/minidump_exception_linux.h
--- a/src/google_breakpad/common/minidump_exception_linux.h
+++ b/src/google_breakpad/common/minidump_exception_linux.h
@@ -83,16 +83,20 @@ typedef enum {
   MD_EXCEPTION_CODE_LIN_DUMP_REQUESTED = 0xFFFFFFFF /* No exception,
                                                        dump requested. */
 } MDExceptionCodeLinux;
 
 /* For (MDException).exception_flags.  These values come from
  * asm-generic/siginfo.h.
  */
 typedef enum {
+  /* Generic */
+  MD_EXCEPTION_FLAG_LIN_SI_USER = 0,
+  MD_EXCEPTION_FLAG_LIN_SI_KERNEL = 0x80,
+
   /* SIGILL */
   MD_EXCEPTION_FLAG_LIN_ILL_ILLOPC = 1,
   MD_EXCEPTION_FLAG_LIN_ILL_ILLOPN = 2,
   MD_EXCEPTION_FLAG_LIN_ILL_ILLADR = 3,
   MD_EXCEPTION_FLAG_LIN_ILL_ILLTRP = 4,
   MD_EXCEPTION_FLAG_LIN_ILL_PRVOPC = 5,
   MD_EXCEPTION_FLAG_LIN_ILL_PRVREG = 6,
   MD_EXCEPTION_FLAG_LIN_ILL_COPROC = 7,
diff --git a/src/processor/minidump_processor.cc b/src/processor/minidump_processor.cc
--- a/src/processor/minidump_processor.cc
+++ b/src/processor/minidump_processor.cc
@@ -1401,16 +1401,22 @@ string MinidumpProcessor::GetCrashReason
           reason = "SIGTRAP";
           break;
         case MD_EXCEPTION_CODE_LIN_SIGABRT:
           reason = "SIGABRT";
           break;
         case MD_EXCEPTION_CODE_LIN_SIGBUS:
           reason = "SIGBUS / ";
           switch (exception_flags) {
+            case MD_EXCEPTION_FLAG_LIN_SI_USER:
+              reason.append("SI_USER");
+              break;
+            case MD_EXCEPTION_FLAG_LIN_SI_KERNEL:
+              reason.append("SI_KERNEL");
+              break;
             case MD_EXCEPTION_FLAG_LIN_BUS_ADRALN:
               reason.append("BUS_ADRALN");
               break;
             case MD_EXCEPTION_FLAG_LIN_BUS_ADRERR:
               reason.append("BUS_ADRERR");
               break;
             case MD_EXCEPTION_FLAG_LIN_BUS_OBJERR:
               reason.append("BUS_OBJERR");
@@ -1462,18 +1468,24 @@ string MinidumpProcessor::GetCrashReason
           break;
         case MD_EXCEPTION_CODE_LIN_SIGKILL:
           reason = "SIGKILL";
           break;
         case MD_EXCEPTION_CODE_LIN_SIGUSR1:
           reason = "SIGUSR1";
           break;
         case MD_EXCEPTION_CODE_LIN_SIGSEGV:
-          reason = "SIGSEGV /";
+          reason = "SIGSEGV / ";
           switch (exception_flags) {
+            case MD_EXCEPTION_FLAG_LIN_SI_USER:
+              reason.append("SI_USER");
+              break;
+            case MD_EXCEPTION_FLAG_LIN_SI_KERNEL:
+              reason.append("SI_KERNEL");
+              break;
             case MD_EXCEPTION_FLAG_LIN_SEGV_MAPERR:
               reason.append("SEGV_MAPERR");
               break;
             case MD_EXCEPTION_FLAG_LIN_SEGV_ACCERR:
               reason.append("SEGV_ACCERR");
               break;
             case MD_EXCEPTION_FLAG_LIN_SEGV_BNDERR:
               reason.append("SEGV_BNDERR");