On 7/9/19 10:53 PM, Damien Le Moal wrote: > For large values of the number of zones reported and/or large zone > sizes, the sector increment calculated with > > blk_queue_zone_sectors(q) * n > > in blk_report_zones() loop can overflow the unsigned int type used for > the calculation as both "n" and blk_queue_zone_sectors() value are > unsigned int. E.g. for a device with 256 MB zones (524288 sectors), > overflow happens with 8192 or more zones reported. > > Changing the return type of blk_queue_zone_sectors() to sector_t, fixes > this problem and avoids overflow problem for all other callers of this > helper too. The same change is also applied to the bdev_zone_sectors() > helper. Applied, thanks. -- Jens Axboe
