diff --git a/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_192.cpp b/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_192.cpp
index c8f3929841..0cfd6aed8d 100644
--- a/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_192.cpp
+++ b/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_192.cpp
@@ -10,6 +10,9 @@
 // RUN: %clangxx -fsycl -I%S/.. %s -o %t.out
 // RUN: env IGC_FunctionControl=3 IGC_ForceInlineStackCallWithImplArg=1 %GPU_RUN_PLACEHOLDER %t.out
 
+// Regression in GPU RT 21.16.19610
+// XFAIL: linux
+
 #include <cstdint>
 
 constexpr unsigned VL = 16;
diff --git a/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_256.cpp b/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_256.cpp
index bc560aa1c4..872b952800 100644
--- a/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_256.cpp
+++ b/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_256.cpp
@@ -10,6 +10,9 @@
 // RUN: %clangxx -fsycl -I%S/.. %s -o %t.out
 // RUN: env IGC_FunctionControl=3 IGC_ForceInlineStackCallWithImplArg=1 %GPU_RUN_PLACEHOLDER %t.out
 
+// Regression in GPU RT 21.16.19610
+// XFAIL: linux
+
 #include <cstdint>
 
 constexpr unsigned VL = 16;
diff --git a/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_512.cpp b/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_512.cpp
index 19c36cc808..0a011f28ba 100644
--- a/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_512.cpp
+++ b/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_512.cpp
@@ -10,6 +10,9 @@
 // RUN: %clangxx -fsycl -I%S/.. %s -o %t.out
 // RUN: env IGC_FunctionControl=3 IGC_ForceInlineStackCallWithImplArg=1 %GPU_RUN_PLACEHOLDER %t.out
 
+// Regression in GPU RT 21.16.19610
+// XFAIL: linux
+
 #include <cstdint>
 
 constexpr unsigned VL = 16;
diff --git a/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_64.cpp b/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_64.cpp
index f6215de0e1..9315a5f326 100644
--- a/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_64.cpp
+++ b/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_64.cpp
@@ -10,6 +10,9 @@
 // RUN: %clangxx -fsycl -I%S/.. %s -o %t.out
 // RUN: env IGC_FunctionControl=3 IGC_ForceInlineStackCallWithImplArg=1 %GPU_RUN_PLACEHOLDER %t.out
 
+// Regression in GPU RT 21.16.19610
+// XFAIL: linux
+
 #include <cstdint>
 
 constexpr unsigned VL = 16;
diff --git a/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_96.cpp b/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_96.cpp
index 3e4ec432cd..0236102721 100644
--- a/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_96.cpp
+++ b/SYCL/ESIMD/noinline_args_size/noinline_args_char_int_size_96.cpp
@@ -10,6 +10,9 @@
 // RUN: %clangxx -fsycl -I%S/.. %s -o %t.out
 // RUN: env IGC_FunctionControl=3 IGC_ForceInlineStackCallWithImplArg=1 %GPU_RUN_PLACEHOLDER %t.out
 
+// Regression in GPU RT 21.16.19610
+// XFAIL: linux
+
 #include <cstdint>
 
 constexpr unsigned VL = 16;
diff --git a/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_192.cpp b/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_192.cpp
index ac3d394361..5561782b6a 100644
--- a/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_192.cpp
+++ b/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_192.cpp
@@ -10,6 +10,9 @@
 // RUN: %clangxx -fsycl -I%S/.. %s -o %t.out
 // RUN: env IGC_FunctionControl=3 IGC_ForceInlineStackCallWithImplArg=1 %GPU_RUN_PLACEHOLDER %t.out
 
+// Regression in GPU RT 21.16.19610
+// XFAIL: linux
+
 #include <cstdint>
 
 constexpr unsigned VL = 16;
diff --git a/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_256.cpp b/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_256.cpp
index ee110be875..1388148f8d 100644
--- a/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_256.cpp
+++ b/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_256.cpp
@@ -10,6 +10,9 @@
 // RUN: %clangxx -fsycl -I%S/.. %s -o %t.out
 // RUN: env IGC_FunctionControl=3 IGC_ForceInlineStackCallWithImplArg=1 %GPU_RUN_PLACEHOLDER %t.out
 
+// Regression in GPU RT 21.16.19610
+// XFAIL: linux
+
 #include <cstdint>
 
 constexpr unsigned VL = 16;
diff --git a/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_512.cpp b/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_512.cpp
index b6a774f03a..6f8edd4a70 100644
--- a/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_512.cpp
+++ b/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_512.cpp
@@ -10,6 +10,9 @@
 // RUN: %clangxx -fsycl -I%S/.. %s -o %t.out
 // RUN: env IGC_FunctionControl=3 IGC_ForceInlineStackCallWithImplArg=1 %GPU_RUN_PLACEHOLDER %t.out
 
+// Regression in GPU RT 21.16.19610
+// XFAIL: linux
+
 #include <cstdint>
 
 constexpr unsigned VL = 16;
diff --git a/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_64.cpp b/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_64.cpp
index 871063260b..b96ffc7cba 100644
--- a/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_64.cpp
+++ b/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_64.cpp
@@ -10,6 +10,9 @@
 // RUN: %clangxx -fsycl -I%S/.. %s -o %t.out
 // RUN: env IGC_FunctionControl=3 IGC_ForceInlineStackCallWithImplArg=1 %GPU_RUN_PLACEHOLDER %t.out
 
+// Regression in GPU RT 21.16.19610
+// XFAIL: linux
+
 #include <cstdint>
 
 constexpr unsigned VL = 16;
diff --git a/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_96.cpp b/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_96.cpp
index a9002a1d7e..f294466b6a 100644
--- a/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_96.cpp
+++ b/SYCL/ESIMD/noinline_args_size/noinline_args_int_size_96.cpp
@@ -10,6 +10,9 @@
 // RUN: %clangxx -fsycl -I%S/.. %s -o %t.out
 // RUN: env IGC_FunctionControl=3 IGC_ForceInlineStackCallWithImplArg=1 %GPU_RUN_PLACEHOLDER %t.out
 
+// Regression in GPU RT 21.16.19610
+// XFAIL: linux
+
 #include <cstdint>
 
 constexpr unsigned VL = 16;
diff --git a/SYCL/ESIMD/private_memory/pm_access_1.cpp b/SYCL/ESIMD/private_memory/pm_access_1.cpp
index caf07d825d..76a8d878de 100644
--- a/SYCL/ESIMD/private_memory/pm_access_1.cpp
+++ b/SYCL/ESIMD/private_memory/pm_access_1.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 // REQUIRES: gpu
-// UNSUPPORTED: cuda
+// Sporadic failure in GPU RT 21.16.19610
+// UNSUPPORTED: cuda || (level_zero && linux)
 // RUN: %clangxx -fsycl -I%S/.. %S/Inputs/pm_common.cpp -o %t.out
 // RUN: %GPU_RUN_PLACEHOLDER %t.out 1
diff --git a/SYCL/ESIMD/private_memory/pm_access_2.cpp b/SYCL/ESIMD/private_memory/pm_access_2.cpp
index 63c6359f3b..421f23a6e0 100644
--- a/SYCL/ESIMD/private_memory/pm_access_2.cpp
+++ b/SYCL/ESIMD/private_memory/pm_access_2.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 // REQUIRES: gpu
-// UNSUPPORTED: cuda
+// Sporadic failure in GPU RT 21.16.19610
+// UNSUPPORTED: cuda || (level_zero && linux)
 // RUN: %clangxx -fsycl -I%S/.. %S/Inputs/pm_common.cpp -o %t.out
 // RUN: %GPU_RUN_PLACEHOLDER %t.out 2
diff --git a/SYCL/ESIMD/private_memory/pm_access_3.cpp b/SYCL/ESIMD/private_memory/pm_access_3.cpp
index 628351bf14..0ac26cc3f9 100644
--- a/SYCL/ESIMD/private_memory/pm_access_3.cpp
+++ b/SYCL/ESIMD/private_memory/pm_access_3.cpp
@@ -7,6 +7,7 @@
 //===----------------------------------------------------------------------===//
 
 // REQUIRES: gpu
-// UNSUPPORTED: cuda
+// Sporadic failure in GPU RT 21.16.19610
+// UNSUPPORTED: cuda || (level_zero && linux)
 // RUN: %clangxx -fsycl -I%S/.. %S/Inputs/pm_common.cpp -o %t.out
 // RUN: %GPU_RUN_PLACEHOLDER %t.out 3
diff --git a/SYCL/USM/badmalloc.cpp b/SYCL/USM/badmalloc.cpp
index 95934477c1..a6d2892dcf 100644
--- a/SYCL/USM/badmalloc.cpp
+++ b/SYCL/USM/badmalloc.cpp
@@ -6,6 +6,9 @@
 // RUN: %GPU_RUN_PLACEHOLDER %t1.out
 // RUN: %ACC_RUN_PLACEHOLDER %t1.out
 
+// Regression in GPU RT 21.16.19610
+// XFAIL: level_zero && gpu
+
 //==----------------- badmalloc.cpp - Bad Mallocs test ---------------------==//
 //
 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.