Hi, Nullness of needs to be checked here: https://github.com/qemu/qemu/blob/c532b954d96f96d361ca31308f75f1b95bd4df76/block/commit.c#L221
pstrcpy(bs->exact_filename, sizeof(bs->exact_filename),... While it is done at 2 other locations: https://github.com/qemu/qemu/blob/c532b954d96f96d361ca31308f75f1b95bd4df76/block/backup-top.c#L113 https://github.com/qemu/qemu/blob/c532b954d96f96d361ca31308f75f1b95bd4df76/block/mirror.c#L1477 if (bs->backing == NULL) { return} Thanks, Mansour
