[DeviceAddressSanitizer] Add warning for unaligned __asan_mem_to_shadow call (#18879)

And skip some test affected by OpenCL CPU subgroup buffer alignment
issue.

This PR addresses intel/llvm#18743.

Author: Wu Yingcong

libdevice/sanitizer/asan_rtl.cpp

@@ -707,12 +707,24 @@ ASAN_REPORT_ERROR_N(store, true)
 
 ///
 /// ASAN convert memory address to shadow memory address
+/// This function is used only for getting shadow address of private memory so
+/// that we can poison them later. And the current implmentation require the ptr
+/// to be aligned with ASAN_SHADOW_GRANULARITY. If not aligned, the subsequent
+/// poisoning will not work correctly.
 ///
+static __SYCL_CONSTANT__ const char __asan_mem_to_shadow_unaligned_msg[] =
+    "[kernel] __asan_mem_to_shadow() unaligned address: %p\n";
 
 DEVICE_EXTERN_C_NOINLINE uptr __asan_mem_to_shadow(uptr ptr, uint32_t as) {
   if (!__AsanLaunchInfo)
     return 0;
 
+  // If ptr is not aligned, then it should be considered as implementation
+  // error. Print a warning for it.
+  if (ptr & AlignMask(ASAN_SHADOW_GRANULARITY)) {
+    __spirv_ocl_printf(__asan_mem_to_shadow_unaligned_msg, (void *)ptr);
+  }
+
   return MemToShadow(ptr, as);
 }
 

sycl/test-e2e/AddressSanitizer/out-of-bounds/buffer/buffer_3d.cpp

@@ -1,8 +1,12 @@
 // REQUIRES: linux, cpu || (gpu && level_zero)
 // RUN: %{build} %device_asan_flags -O0 -g -o %t1.out
-// RUN: %{run} not %t1.out 2>&1 | FileCheck %s
+// OCL CPU has subgroup alignment issue with -O0, skip it for
+// now.(CMPLRLLVM-61493)
+// RUN: %{run} %if !cpu %{ not %t1.out 2>&1 | FileCheck %s %}
 // RUN: %{build} %device_asan_flags -O1 -g -o %t2.out
 // RUN: %{run} not %t2.out 2>&1 | FileCheck %s
+// RUN: %{build} %device_asan_flags -O2 -g -o %t3.out
+// RUN: %{run} not %t3.out 2>&1 | FileCheck %s
 
 #include <sycl/detail/core.hpp>
 

sycl/test-e2e/AddressSanitizer/out-of-bounds/local/group_local_memory.cpp

@@ -1,6 +1,8 @@
 // REQUIRES: linux, cpu || (gpu && level_zero)
 // RUN: %{build} %device_asan_flags -g -O0 -o %t1.out
-// RUN: %{run} not %t1.out 2>&1 | FileCheck %s
+// OCL CPU has subgroup alignment issue with -O0, skip it for
+// now.(CMPLRLLVM-61493)
+// RUN: %{run} %if !cpu %{ not %t1.out 2>&1 | FileCheck %s %}
 // RUN: %{build} %device_asan_flags -g -O1 -o %t2.out
 // RUN: %{run} not %t2.out 2>&1 | FileCheck %s
 // RUN: %{build} %device_asan_flags -g -O2 -o %t3.out

sycl/test-e2e/AddressSanitizer/out-of-bounds/local/group_local_memory_func.cpp

@@ -1,6 +1,8 @@
 // REQUIRES: linux, cpu || (gpu && level_zero)
+// OCL CPU has subgroup alignment issue with -O0, skip it for
+// now.(CMPLRLLVM-61493)
 // RUN: %{build} %device_asan_flags -g -O0 -o %t1.out
-// RUN: %{run} not %t1.out 2>&1 | FileCheck %s
+// RUN: %{run} %if !cpu %{ not %t1.out 2>&1 | FileCheck %s %}
 // RUN: %{build} %device_asan_flags -g -O1 -o %t2.out
 // RUN: %{run} not %t2.out 2>&1 | FileCheck %s
 // RUN: %{build} %device_asan_flags -g -O2 -o %t3.out