diff --git a/compiler-rt/lib/msan/msan_report.cpp b/compiler-rt/lib/msan/msan_report.cpp
--- a/compiler-rt/lib/msan/msan_report.cpp
+++ b/compiler-rt/lib/msan/msan_report.cpp
@@ -36,17 +36,11 @@
 
 static void DescribeStackOrigin(const char *so, uptr pc) {
   Decorator d;
-  char *s = internal_strdup(so);
-  char *sep = internal_strchr(s, '@');
-  CHECK(sep);
-  *sep = '\0';
   Printf("%s", d.Origin());
   Printf(
       "  %sUninitialized value was created by an allocation of '%s%s%s'"
-      " in the stack frame of function '%s%s%s'%s\n",
-      d.Origin(), d.Name(), s, d.Origin(), d.Name(), sep + 1, d.Origin(),
-      d.Default());
-  InternalFree(s);
+      " in the stack frame%s\n",
+      d.Origin(), d.Name(), so, d.Origin(), d.Default());
 
   if (pc) {
     // For some reason function address in LLVM IR is 1 less then the address
diff --git a/compiler-rt/test/msan/chained_origin.cpp b/compiler-rt/test/msan/chained_origin.cpp
--- a/compiler-rt/test/msan/chained_origin.cpp
+++ b/compiler-rt/test/msan/chained_origin.cpp
@@ -60,7 +60,7 @@
 // CHECK-FULL-STACK: {{#2 .* in main.*chained_origin.cpp:}}[[@LINE-16]]
 // CHECK-SHORT-STACK: {{#0 .* in fn_g.*chained_origin.cpp:}}[[@LINE-37]]
 
-// CHECK-STACK: Uninitialized value was created by an allocation of 'z' in the stack frame of function 'main'
+// CHECK-STACK: Uninitialized value was created by an allocation of 'z' in the stack frame
 // CHECK-STACK: {{#0 .* in main.*chained_origin.cpp:}}[[@LINE-22]]
 
 // CHECK-HEAP: Uninitialized value was created by a heap allocation
diff --git a/compiler-rt/test/msan/chained_origin_empty_stack.cpp b/compiler-rt/test/msan/chained_origin_empty_stack.cpp
--- a/compiler-rt/test/msan/chained_origin_empty_stack.cpp
+++ b/compiler-rt/test/msan/chained_origin_empty_stack.cpp
@@ -10,7 +10,7 @@
 // CHECK:   #0 {{.*}} in fn_g
 // CHECK-NOT: #1
 
-// CHECK: Uninitialized value was created by an allocation of 'z' in the stack frame of function 'main'
+// CHECK: Uninitialized value was created by an allocation of 'z' in the stack frame
 // CHECK:   #0 {{.*}} in main
 
 #include <stdio.h>
diff --git a/compiler-rt/test/msan/chained_origin_memcpy.cpp b/compiler-rt/test/msan/chained_origin_memcpy.cpp
--- a/compiler-rt/test/msan/chained_origin_memcpy.cpp
+++ b/compiler-rt/test/msan/chained_origin_memcpy.cpp
@@ -57,7 +57,7 @@
 // CHECK-FULL-STACK: {{#1 .* in fn_f.*chained_origin_memcpy.cpp:}}[[@LINE-25]]
 // CHECK-SHORT-STACK: {{#0 .* in fn_g.*chained_origin_memcpy.cpp:}}[[@LINE-31]]
 
-// CHECK-Z1: Uninitialized value was created by an allocation of 'z1' in the stack frame of function 'main'
-// CHECK-Z2: Uninitialized value was created by an allocation of 'z2' in the stack frame of function 'main'
+// CHECK-Z1: Uninitialized value was created by an allocation of 'z1' in the stack frame
+// CHECK-Z2: Uninitialized value was created by an allocation of 'z2' in the stack frame
 // CHECK-Z1: {{#0 .* in main.*chained_origin_memcpy.cpp:}}[[@LINE-21]]
 // CHECK-Z2: {{#0 .* in main.*chained_origin_memcpy.cpp:}}[[@LINE-21]]
diff --git a/compiler-rt/test/msan/chained_origin_memmove.cpp b/compiler-rt/test/msan/chained_origin_memmove.cpp
--- a/compiler-rt/test/msan/chained_origin_memmove.cpp
+++ b/compiler-rt/test/msan/chained_origin_memmove.cpp
@@ -52,7 +52,7 @@
 // CHECK-FULL-STACK: {{#1 .* in fn_f.*chained_origin_memmove.cpp:}}[[@LINE-24]]
 // CHECK-SHORT-STACK: {{#0 .* in fn_g.*chained_origin_memmove.cpp:}}[[@LINE-29]]
 
-// CHECK-Z1: Uninitialized value was created by an allocation of 'z1' in the stack frame of function 'main'
-// CHECK-Z2: Uninitialized value was created by an allocation of 'z2' in the stack frame of function 'main'
+// CHECK-Z1: Uninitialized value was created by an allocation of 'z1' in the stack frame
+// CHECK-Z2: Uninitialized value was created by an allocation of 'z2' in the stack frame
 // CHECK-Z1: {{#0 .* in main.*chained_origin_memmove.cpp:}}[[@LINE-21]]
 // CHECK-Z2: {{#0 .* in main.*chained_origin_memmove.cpp:}}[[@LINE-21]]
diff --git a/compiler-rt/test/msan/msan_print_shadow.cpp b/compiler-rt/test/msan/msan_print_shadow.cpp
--- a/compiler-rt/test/msan/msan_print_shadow.cpp
+++ b/compiler-rt/test/msan/msan_print_shadow.cpp
@@ -106,7 +106,7 @@
 // CHECK-ORIGINS: Origin C (origin_id {{.*}}):
 // CHECK-ORIGINS-2:  Uninitialized value was stored to memory at
 // CHECK-ORIGINS-2:    #0 {{.*}} in main{{.*}}msan_print_shadow.cpp:48
-// CHECK-ORIGINS:   Uninitialized value was created by an allocation of 'x' in the stack frame of function 'main'
+// CHECK-ORIGINS:   Uninitialized value was created by an allocation of 'x' in the stack frame
 // CHECK-ORIGINS:     #0 {{.*}} in main{{.*}}msan_print_shadow.cpp:13
 
 // CHECK-ORIGINS: Origin D (origin_id {{.*}}):
diff --git a/compiler-rt/test/msan/report-demangling.cpp b/compiler-rt/test/msan/report-demangling.cpp
--- a/compiler-rt/test/msan/report-demangling.cpp
+++ b/compiler-rt/test/msan/report-demangling.cpp
@@ -14,6 +14,6 @@
 int main(int argc, char **argv) {
   return f();
   // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
-  // CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame of function '_Z1fv'
+  // CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame
   // CHECK: #0 {{.*}} in f{{.*}} {{.*}}report-demangling.cpp:[[@LINE-9]]
 }
diff --git a/compiler-rt/test/msan/select_origin.cpp b/compiler-rt/test/msan/select_origin.cpp
--- a/compiler-rt/test/msan/select_origin.cpp
+++ b/compiler-rt/test/msan/select_origin.cpp
@@ -17,6 +17,6 @@
   int *volatile px = &x;
   int y = 43;
   int *p = max_by_ptr(px, &y);
-  // CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'main'
+  // CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame
   return *p;
 }
diff --git a/compiler-rt/test/msan/stack-origin.cpp b/compiler-rt/test/msan/stack-origin.cpp
--- a/compiler-rt/test/msan/stack-origin.cpp
+++ b/compiler-rt/test/msan/stack-origin.cpp
@@ -24,7 +24,7 @@
   // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
   // CHECK: {{#0 0x.* in main .*stack-origin.cpp:}}[[@LINE-2]]
 
-  // CHECK-ORIGINS: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'main'
+  // CHECK-ORIGINS: Uninitialized value was created by an allocation of 'x' in the stack frame
   // CHECK-ORIGINS: {{#0 0x.* in main .*stack-origin.cpp:}}[[@LINE-7]]
 
   // CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*stack-origin.cpp:.* main}}
diff --git a/compiler-rt/test/msan/stack-origin2.cpp b/compiler-rt/test/msan/stack-origin2.cpp
--- a/compiler-rt/test/msan/stack-origin2.cpp
+++ b/compiler-rt/test/msan/stack-origin2.cpp
@@ -34,7 +34,7 @@
   // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
   // CHECK: {{#0 0x.* in main .*stack-origin2.cpp:}}[[@LINE-2]]
 
-  // CHECK-ORIGINS: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'f'
+  // CHECK-ORIGINS: Uninitialized value was created by an allocation of 'x' in the stack frame
   // CHECK-ORIGINS: {{#0 0x.* in f .*stack-origin2.cpp:}}[[@LINE-11]]
 
   // CHECK: SUMMARY: MemorySanitizer: use-of-uninitialized-value {{.*stack-origin2.cpp:.* main}}
diff --git a/compiler-rt/test/msan/unaligned_read_origin.cpp b/compiler-rt/test/msan/unaligned_read_origin.cpp
--- a/compiler-rt/test/msan/unaligned_read_origin.cpp
+++ b/compiler-rt/test/msan/unaligned_read_origin.cpp
@@ -11,6 +11,6 @@
   return __sanitizer_unaligned_load32(p);
   // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
   // CHECK: {{#0 0x.* in main .*unaligned_read_origin.cpp:}}[[@LINE-2]]
-  // CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame of function 'main'
+  // CHECK: Uninitialized value was created by an allocation of 'x' in the stack frame
   // CHECK: {{#0 0x.* in main .*unaligned_read_origin.cpp:}}[[@LINE-6]]
 }
diff --git a/compiler-rt/test/msan/vararg.cpp b/compiler-rt/test/msan/vararg.cpp
--- a/compiler-rt/test/msan/vararg.cpp
+++ b/compiler-rt/test/msan/vararg.cpp
@@ -57,4 +57,4 @@
 }
 
 // CHECK: WARNING: MemorySanitizer: use-of-uninitialized-value
-// CHECK-ORIGIN: Uninitialized value was created by an allocation of 'uninit' in the stack frame of function 'main'
+// CHECK-ORIGIN: Uninitialized value was created by an allocation of 'uninit' in the stack frame
diff --git a/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp b/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
--- a/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
+++ b/llvm/lib/Transforms/Instrumentation/MemorySanitizer.cpp
@@ -3875,7 +3875,7 @@
     // It will be printed by the run-time if stack-originated UMR is found.
     // The first 4 bytes of the string are set to '----' and will be replaced
     // by __msan_va_arg_overflow_size_tls at the first call.
-    StackDescription << "----" << I.getName() << "@" << F.getName();
+    StackDescription << "----" << I.getName();
     return createPrivateNonConstGlobalForString(*F.getParent(),
                                                 StackDescription.str());
   }