diff --git a/compiler-rt/lib/scudo/standalone/fuchsia.cpp b/compiler-rt/lib/scudo/standalone/fuchsia.cpp
--- a/compiler-rt/lib/scudo/standalone/fuchsia.cpp
+++ b/compiler-rt/lib/scudo/standalone/fuchsia.cpp
@@ -19,6 +19,7 @@
 #include <zircon/compiler.h>
 #include <zircon/process.h>
 #include <zircon/sanitizer.h>
+#include <zircon/status.h>
 #include <zircon/syscalls.h>
 
 namespace scudo {
@@ -31,6 +32,16 @@
 // with ZX_HANDLE_INVALID.
 static_assert(ZX_HANDLE_INVALID == 0, "");
 
+static void NORETURN dieOnError(zx_status_t Status, const char *FnName,
+                                uptr Size) {
+  char Error[128];
+  formatString(Error, sizeof(Error),
+               "SCUDO ERROR: %s failed with size %zuKB (%s)", FnName,
+               Size >> 10, zx_status_get_string(Status));
+  outputRaw(Error);
+  die();
+}
+
 static void *allocateVmar(uptr Size, MapPlatformData *Data, bool AllowNoMem) {
   // Only scenario so far.
   DCHECK(Data);
@@ -42,7 +53,7 @@
       Size, &Data->Vmar, &Data->VmarBase);
   if (UNLIKELY(Status != ZX_OK)) {
     if (Status != ZX_ERR_NO_MEMORY || !AllowNoMem)
-      dieOnMapUnmapError(Status == ZX_ERR_NO_MEMORY ? Size : 0);
+      dieOnError(Status, "zx_vmar_allocate", Size);
     return nullptr;
   }
   return reinterpret_cast<void *>(Data->VmarBase);
@@ -73,7 +84,7 @@
     Status = _zx_vmo_set_size(Vmo, VmoSize + Size);
     if (Status != ZX_OK) {
       if (Status != ZX_ERR_NO_MEMORY || !AllowNoMem)
-        dieOnMapUnmapError(Status == ZX_ERR_NO_MEMORY ? Size : 0);
+        dieOnError(Status, "zx_vmo_set_size", VmoSize + Size);
       return nullptr;
     }
   } else {
@@ -81,7 +92,7 @@
     Status = _zx_vmo_create(Size, ZX_VMO_RESIZABLE, &Vmo);
     if (UNLIKELY(Status != ZX_OK)) {
       if (Status != ZX_ERR_NO_MEMORY || !AllowNoMem)
-        dieOnMapUnmapError(Status == ZX_ERR_NO_MEMORY ? Size : 0);
+        dieOnError(Status, "zx_vmo_create", Size);
       return nullptr;
     }
     _zx_object_set_property(Vmo, ZX_PROP_NAME, Name, strlen(Name));
@@ -99,7 +110,7 @@
   Status = _zx_vmar_map(Vmar, MapFlags, Offset, Vmo, VmoSize, Size, &P);
   if (UNLIKELY(Status != ZX_OK)) {
     if (Status != ZX_ERR_NO_MEMORY || !AllowNoMem)
-      dieOnMapUnmapError(Status == ZX_ERR_NO_MEMORY ? Size : 0);
+      dieOnError(Status, "zx_vmar_map", Size);
     return nullptr;
   }
 
@@ -120,7 +131,7 @@
   }
   if (UNLIKELY(Status != ZX_OK)) {
     if (Status != ZX_ERR_NO_MEMORY || !AllowNoMem)
-      dieOnMapUnmapError(Status == ZX_ERR_NO_MEMORY ? Size : 0);
+      dieOnError(Status, "zx_vmar_op_range", Size);
     return nullptr;
   }
 
@@ -145,7 +156,7 @@
     const zx_status_t Status =
         _zx_vmar_unmap(Vmar, reinterpret_cast<uintptr_t>(Addr), Size);
     if (UNLIKELY(Status != ZX_OK))
-      dieOnMapUnmapError();
+      dieOnError(Status, "zx_vmar_unmap", Size);
   }
   if (Data) {
     if (Data->Vmo != ZX_HANDLE_INVALID)
@@ -160,8 +171,9 @@
       (Flags & MAP_NOACCESS) ? 0 : (ZX_VM_PERM_READ | ZX_VM_PERM_WRITE);
   DCHECK(Data);
   DCHECK_NE(Data->Vmar, ZX_HANDLE_INVALID);
-  if (_zx_vmar_protect(Data->Vmar, Prot, Addr, Size) != ZX_OK)
-    dieOnMapUnmapError();
+  const zx_status_t Status = _zx_vmar_protect(Data->Vmar, Prot, Addr, Size);
+  if (Status != ZX_OK)
+    dieOnError(Status, "zx_vmar_protect", Size);
 }
 
 void releasePagesToOS(UNUSED uptr BaseAddress, uptr Offset, uptr Size,