nvmeprint.cpp: Add bit 5 of SMART/Health 'Critical Warning' byte (NVMe 1.4).

Patch by Zhenwei Pi.

git-svn-id: https://svn.code.sf.net/p/smartmontools/code/trunk@5165 4ea69e1a-61f1-4043-bf83-b5c94c648137

smartmontools/ChangeLog

 $Id$
 
+2021-01-15  Zhenwei Pi  <pizhenwei@bytedance.com>
+
+	nvmeprint.cpp: Add bit 5 of SMART/Health 'Critical Warning' byte
+	(NVMe 1.4).
+
 2021-01-10  Christian Franke  <franke@computer.org>
 
 	drivedb.h: Add VERSION information to trunk and all branches (#1424).

smartmontools/nvmeprint.cpp

@@ -347,9 +347,12 @@ static void print_critical_warning(unsigned char w)
    if (w & 0x10)
      jout("- volatile memory backup device has failed\n");
    jref["volatile_memory_backup_failed"] = !!(w & 0x10);
-   if (w & ~0x1f)
-     jout("- unknown critical warning(s) (0x%02x)\n", w & ~0x1f);
-   jref["other"] = w & ~0x1f;
+   if (w & 0x20)
+     jout("- persistent memory region has become read-only or unreliable\n");
+   jref["persistent_memory_region_unreliable"] = !!(w & 0x20);
+   if (w & ~0x3f)
+     jout("- unknown critical warning(s) (0x%02x)\n", w & ~0x3f);
+   jref["other"] = w & ~0x3f;
   }
 
   jout("\n");