Index: bolt/lib/Rewrite/RewriteInstance.cpp
===================================================================
--- bolt/lib/Rewrite/RewriteInstance.cpp
+++ bolt/lib/Rewrite/RewriteInstance.cpp
@@ -422,6 +422,8 @@
   if (Error E = PHsOrErr.takeError())
     return E;
 
+  uint64_t MaxAlign =
+    1ULL << llvm::countr_zero(reinterpret_cast<uintptr_t>(Obj.base()));
   ELF64LE::PhdrRange PHs = PHsOrErr.get();
   for (const ELF64LE::Phdr &Phdr : PHs) {
     switch (Phdr.p_type) {
@@ -432,12 +434,9 @@
                                       Phdr.p_vaddr + Phdr.p_memsz);
       NextAvailableOffset = std::max(NextAvailableOffset,
                                      Phdr.p_offset + Phdr.p_filesz);
-
-      BC->SegmentMapInfo[Phdr.p_vaddr] = SegmentInfo{Phdr.p_vaddr,
-                                                     Phdr.p_memsz,
-                                                     Phdr.p_offset,
-                                                     Phdr.p_filesz,
-                                                     Phdr.p_align};
+      BC->SegmentMapInfo[Phdr.p_vaddr] =
+          SegmentInfo{Phdr.p_vaddr, Phdr.p_memsz, Phdr.p_offset, Phdr.p_filesz,
+                      std::min(static_cast<uint64_t>(Phdr.p_align), MaxAlign)};
       break;
     case ELF::PT_INTERP:
       BC->HasInterpHeader = true;