Index: llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
===================================================================
--- llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
+++ llvm/lib/Transforms/Instrumentation/SanitizerCoverage.cpp
@@ -78,6 +78,9 @@
 
 static const char *const SanCovLowestStackName = "__sancov_lowest_stack";
 
+__attribute__((tls_model("initial-exec")))
+thread_local uintptr_t __sancov_lowest_stack;
+
 static cl::opt<int> ClCoverageLevel(
     "sanitizer-coverage-level",
     cl::desc("Sanitizer Coverage. 0: none, 1: entry block, 2: all blocks, "