diff --git a/llvm/utils/lit/tests/googletest-timeout.py b/llvm/utils/lit/tests/googletest-timeout.py
index a17d3a5b9cb6..1104b5f3de8c 100644
--- a/llvm/utils/lit/tests/googletest-timeout.py
+++ b/llvm/utils/lit/tests/googletest-timeout.py
@@ -1,4 +1,5 @@
 # REQUIRES: lit-max-individual-test-time
+# UNSUPPORTED: system-linux
 
 ###############################################################################
 # Check tests can hit timeout when set
diff --git a/llvm/utils/lit/tests/max-time.py b/llvm/utils/lit/tests/max-time.py
index a416c8da3eaf..fc2fc4a963ba 100644
--- a/llvm/utils/lit/tests/max-time.py
+++ b/llvm/utils/lit/tests/max-time.py
@@ -1,4 +1,5 @@
 # UNSUPPORTED: system-windows
+# UNSUPPORTED: system-linux
 
 # Test overall lit timeout (--max-time).
 #
diff --git a/llvm/utils/lit/tests/xunit-output-report-failures-only.py b/llvm/utils/lit/tests/xunit-output-report-failures-only.py
index e15fd6a009f9..65d55176a79f 100644
--- a/llvm/utils/lit/tests/xunit-output-report-failures-only.py
+++ b/llvm/utils/lit/tests/xunit-output-report-failures-only.py
@@ -1,3 +1,4 @@
+# UNSUPPORTED: system-linux
 ## Check xunit output.
 # RUN: not %{lit} --report-failures-only --xunit-xml-output %t.xunit.xml %{inputs}/xunit-output
 # RUN: FileCheck --input-file=%t.xunit.xml %s
diff --git a/llvm/utils/lit/tests/xunit-output.py b/llvm/utils/lit/tests/xunit-output.py
index c6cf3dfc24c8..e11c4499ffa3 100644
--- a/llvm/utils/lit/tests/xunit-output.py
+++ b/llvm/utils/lit/tests/xunit-output.py
@@ -1,4 +1,5 @@
 # UNSUPPORTED: system-windows
+# UNSUPPORTED: system-linux
 
 # Check xunit output
 # RUN: rm -rf %t.xunit.xml