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

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

Reviewed-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Julia Lawall 2023-06-23 23:14:43 +02:00 committed by David Sterba
parent 706a741595
commit 07a3bb95ea
1 changed files with 2 additions and 2 deletions
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4
fs/btrfs/zoned.c
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@ -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",