8263242: serviceability/sa/ClhsdbFindPC.java cannot find MaxJNILocalCapacity with ASLR

Reviewed-by: kevinw, ysuenaga

Author: plummercj

src/jdk.hotspot.agent/linux/native/libsaproc/libproc_impl.c

@@ -187,8 +187,9 @@ static bool fill_addr_info(lib_info* lib) {
   lib->exec_end = (uintptr_t)-1L;
   for (ph = phbuf, cnt = 0; cnt < ehdr.e_phnum; cnt++, ph++) {
     if (ph->p_type == PT_LOAD) {
-      uintptr_t aligned_start = align_down(lib->base + ph->p_vaddr, ph->p_align);
-      uintptr_t aligned_end = align_up(aligned_start + ph->p_filesz, ph->p_align);
+      uintptr_t unaligned_start = lib->base + ph->p_vaddr;
+      uintptr_t aligned_start = align_down(unaligned_start, ph->p_align);
+      uintptr_t aligned_end = align_up(unaligned_start + ph->p_memsz, ph->p_align);
       if ((lib->end == (uintptr_t)-1L) || (lib->end < aligned_end)) {
         lib->end = aligned_end;
       }
@@ -540,4 +541,3 @@ ps_lgetregs(struct ps_prochandle *ph, lwpid_t lid, prgregset_t gregset) {
   print_debug("ps_lgetfpregs not implemented\n");
   return PS_OK;
 }
-