1 files changed, 3 insertions, 0 deletions
diff --git a/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86_64.cpp b/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86_64.cpp
index a7390f58713..2ce822043af 100644
--- a/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86_64.cpp
+++ b/lldb/source/Plugins/Process/Linux/NativeRegisterContextLinux_x86_64.cpp
@@ -1018,6 +1018,9 @@ NativeRegisterContextLinux_x86_64::SetHardwareWatchpointWithIndex(
     if (wp_index >= NumSupportedHardwareWatchpoints())
         return Error ("Watchpoint index out of range");
 
+    if (watch_flags == 0x2)
+        return Error ("Read watchpoints currently unsupported on x86_64 architecture");
+
     if (watch_flags != 0x1 && watch_flags != 0x3)
         return Error ("Invalid read/write bits for watchpoint");