os0file.c:

  Check that writes to data files always happen in to addresses divisible by 16 kB, and the chunk size is also divisible by 16 kB; a user reported 2 corrupt pages from Linux-2.4.20 where an index page seemed displaced

innobase/os/os0file.c

@@ -2676,6 +2676,10 @@ consecutive_loop:
 	/* Do the i/o with ordinary, synchronous i/o functions: */
 	if (slot->type == OS_FILE_WRITE) {
 		if (array == os_aio_write_array) {
+			if ((total_len % UNIV_PAGE_SIZE != 0)
+			    || (slot->offset % UNIV_PAGE_SIZE != 0)) {
+				ut_a(0);
+			}
 			  
 			/* Do a 'last millisecond' check that the page end
 			is sensible; reported page checksum errors from