src/cpu/x86/vm/macroAssembler_x86.cpp

*** 5598,5607 ****
--- 5598,5610 ----
    movptr(Address(thread_reg, in_bytes(JavaThread::tlab_top_offset())), top);
    addptr(top, t1);
    subptr(top, (int32_t)ThreadLocalAllocBuffer::alignment_reserve_in_bytes());
    movptr(Address(thread_reg, in_bytes(JavaThread::tlab_end_offset())), top);
  
+   // Currently, if this happens, just set back the actual end to where it was.
+   movptr(Address(thread_reg, in_bytes(JavaThread::tlab_actual_end_offset())), top);
+ 
    if (ZeroTLAB) {
      // This is a fast TLAB refill, therefore the GC is not notified of it.
      // So compiled code must fill the new TLAB with zeroes.
      movptr(top, Address(thread_reg, in_bytes(JavaThread::tlab_start_offset())));
      zero_memory(top, t1, 0, t2);