find_ram_offset() does not handle size=0 gracefully. It hands out the
same RAMBlock offset multiple times, leading to obscure failures later
on.
Add an assert to warn early if something is incorrectly allocating a
zero size RAMBlock.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
RAMBlock *block, *next_block;
ram_addr_t offset = RAM_ADDR_MAX, mingap = RAM_ADDR_MAX;
+ assert(size != 0); /* it would hand out same offset multiple times */
+
if (QTAILQ_EMPTY(&ram_list.blocks))
return 0;