Commit 07a3bb95 authored by Julia Lawall's avatar Julia Lawall Committed by David Sterba
Browse files

btrfs: zoned: use vcalloc instead of for vzalloc in btrfs_get_dev_zone_info 



Use vcalloc that checks potential multiplication overflows.  The changes
were done using Coccinelle semantic patch.

Reviewed-by: default avatarNaohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: default avatarJohannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: default avatarJulia Lawall <Julia.Lawall@inria.fr>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 706a7415

fs/btrfs/zoned.c

+2 −2
Original line number Diff line number Diff line
@@ -465,8 +465,8 @@ int btrfs_get_dev_zone_info(struct btrfs_device *device, bool populate_cache) 
	 * use the cache.

	 */

	if (populate_cache && bdev_is_zoned(device->bdev)) {

		zone_info->zone_cache = vzalloc(sizeof(struct blk_zone) *

						zone_info->nr_zones);

		zone_info->zone_cache = vcalloc(zone_info->nr_zones,

						sizeof(struct blk_zone));

		if (!zone_info->zone_cache) {

			btrfs_err_in_rcu(device->fs_info,

				"zoned: failed to allocate zone cache for %s",