Index: lld/ELF/InputFiles.cpp
===================================================================
--- lld/ELF/InputFiles.cpp
+++ lld/ELF/InputFiles.cpp
@@ -808,10 +808,17 @@
     // We do not usually care about alignments of data in shared object
     // files because the loader takes care of it. However, if we promote a
     // DSO symbol to point to .bss due to copy relocation, we need to keep
-    // the original alignment requirements. We infer it here.
+    // the original alignment requirements.
+    //
+    // Since a symbol in .dynsym don't have an alignment field, we need to
+    // infer it conservatively from its address. If a symbol happens to be
+    // aligned to a large alignment, we round it down to a reasonable number
+    // (which is currently 32 that satisfies the x86-64 AVX alignment
+    // requirment.)
     uint32_t Alignment = 1;
     if (Sym.st_value)
-      Alignment = 1ULL << countTrailingZeros((uint64_t)Sym.st_value);
+      Alignment = 1 << std::min(countTrailingZeros((uint64_t)Sym.st_value),
+                                countTrailingZeros((uint64_t)32));
     if (0 < Sym.st_shndx && Sym.st_shndx < Sections.size()) {
       uint32_t SecAlign = Sections[Sym.st_shndx].sh_addralign;
       Alignment = std::min(Alignment, SecAlign);