[compiler-rt] [compiler-rt][Fuchsia] Propogate raw_report to UnmapOrDieVmar (PR #82566)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-compiler-rt-sanitizer

Author: None (PiJoules)

<details>
<summary>Changes</summary>

As of #<!-- -->77488, UnmapOrDie now accepts raw_report which allows the program to crash without calling Report(). We should propogate this value through UnmapOrDieVmar and have that call ReportMunmapFailureAndDie which uses `raw_report`.

---
Full diff: https://github.com/llvm/llvm-project/pull/82566.diff


1 Files Affected:

- (modified) compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp (+8-9) 


``````````diff
diff --git a/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp b/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp
index 2f291f7ca9ea10..a67b2a8725eca8 100644
--- a/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp
+++ b/compiler-rt/lib/sanitizer_common/sanitizer_fuchsia.cpp
@@ -288,7 +288,8 @@ uptr ReservedAddressRange::MapOrDie(uptr fixed_addr, uptr map_size,
                           name ? name : name_, true);
 }
 
-void UnmapOrDieVmar(void *addr, uptr size, zx_handle_t target_vmar) {
+void UnmapOrDieVmar(void *addr, uptr size, zx_handle_t target_vmar,
+                    bool raw_report) {
   if (!addr || !size)
     return;
   size = RoundUpTo(size, GetPageSize());
@@ -301,11 +302,8 @@ void UnmapOrDieVmar(void *addr, uptr size, zx_handle_t target_vmar) {
     status = _zx_vmar_unmap(_zx_vmar_root_self(),
                             reinterpret_cast<uintptr_t>(addr), size);
   }
-  if (status != ZX_OK) {
-    Report("ERROR: %s failed to deallocate 0x%zx (%zd) bytes at address %p\n",
-           SanitizerToolName, size, size, addr);
-    CHECK("unable to unmap" && 0);
-  }
+  if (status != ZX_OK)
+    ReportMunmapFailureAndDie(addr, size, status, raw_report);
 
   DecreaseTotalMmap(size);
 }
@@ -327,7 +325,8 @@ void ReservedAddressRange::Unmap(uptr addr, uptr size) {
   }
   // Partial unmapping does not affect the fact that the initial range is still
   // reserved, and the resulting unmapped memory can't be reused.
-  UnmapOrDieVmar(reinterpret_cast<void *>(addr), size, vmar);
+  UnmapOrDieVmar(reinterpret_cast<void *>(addr), size, vmar,
+                 /*raw_report=*/false);
 }
 
 // This should never be called.
@@ -413,8 +412,8 @@ void *MmapAlignedOrDieOnFatalError(uptr size, uptr alignment,
   return reinterpret_cast<void *>(addr);
 }
 
-void UnmapOrDie(void *addr, uptr size, bool) {
-  UnmapOrDieVmar(addr, size, gSanitizerHeapVmar);
+void UnmapOrDie(void *addr, uptr size, bool raw_report) {
+  UnmapOrDieVmar(addr, size, gSanitizerHeapVmar, raw_report);
 }
 
 void ReleaseMemoryPagesToOS(uptr beg, uptr end) {

``````````

</details>


https://github.com/llvm/llvm-project/pull/82566