tree e103c4b121c6b1d25c3b60cacb55ac3c2783697d
parent f82c5b17ea85d8f432069a4afd6cbdb65d9d8a66
author Max Reitz <mreitz@redhat.com> 1490979912 +0200
committer Max Reitz <mreitz@redhat.com> 1491232300 +0200

block/parallels: Avoid overflows

Change the types of variables in allocate_clusters() to int64_t so we do
not have to worry about potential overflows.

Add an assertion that our accesses to s->bat[] do not result in a buffer
overflow and that the implicit conversion performed when invoking
bat_entry_off() does not result in an integer overflow.

Coverity-id: 1307776
Signed-off-by: Max Reitz <mreitz@redhat.com>
Message-id: 20170331170512.10381-1-mreitz@redhat.com
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Max Reitz <mreitz@redhat.com>