diff --git a/lldb/source/Plugins/Process/POSIX/CrashReason.h b/lldb/source/Plugins/Process/POSIX/CrashReason.h
--- a/lldb/source/Plugins/Process/POSIX/CrashReason.h
+++ b/lldb/source/Plugins/Process/POSIX/CrashReason.h
@@ -22,6 +22,8 @@
   eInvalidAddress,
   ePrivilegedAddress,
   eBoundViolation,
+  eAsyncTagCheckFault,
+  eSyncTagCheckFault,
 
   // SIGILL crash reasons.
   eIllegalOpcode,
diff --git a/lldb/source/Plugins/Process/POSIX/CrashReason.cpp b/lldb/source/Plugins/Process/POSIX/CrashReason.cpp
--- a/lldb/source/Plugins/Process/POSIX/CrashReason.cpp
+++ b/lldb/source/Plugins/Process/POSIX/CrashReason.cpp
@@ -58,6 +58,18 @@
 #endif
   case SEGV_BNDERR:
     return CrashReason::eBoundViolation;
+#ifdef __linux__
+#ifndef SEGV_MTEAERR
+#define SEGV_MTEAERR 8
+#endif
+  case SEGV_MTEAERR:
+    return CrashReason::eAsyncTagCheckFault;
+#ifndef SEGV_MTESERR
+#define SEGV_MTESERR 9
+#endif
+  case SEGV_MTESERR:
+    return CrashReason::eSyncTagCheckFault;
+#endif // __linux__
   }
 
   return CrashReason::eInvalidCrashReason;
@@ -166,6 +178,13 @@
   case CrashReason::eBoundViolation:
     str = "signal SIGSEGV: bound violation";
     break;
+  case CrashReason::eAsyncTagCheckFault:
+    str = "signal SIGSEGV: async tag check fault";
+    break;
+  case CrashReason::eSyncTagCheckFault:
+    str = "signal SIGSEGV: sync tag check fault";
+    AppendFaultAddr(str, fault_addr);
+    break;
   case CrashReason::eIllegalOpcode:
     str = "signal SIGILL: illegal instruction";
     break;
@@ -246,6 +265,12 @@
   case CrashReason::eBoundViolation:
     str = "eBoundViolation";
     break;
+  case CrashReason::eAsyncTagCheckFault:
+    str = "eAsyncTagCheckFault";
+    break;
+  case CrashReason::eSyncTagCheckFault:
+    str = "eSyncTagCheckFault";
+    break;
 
   // SIGILL crash reasons.
   case CrashReason::eIllegalOpcode: