X-Git-Url: https://git.proxmox.com/?a=blobdiff_plain;f=block%2Fblk-zoned.c;h=77fce6f09f781fee9d92242dd2cbdfed74dec9e6;hb=HEAD;hp=ff57fb51b3380bb14d7c6e449f4dada1cf6ab904;hpb=242f66c84533af20a20ecff4ea1b2c8c6a0f65ed;p=mirror_ubuntu-bionic-kernel.git

diff --git a/block/blk-zoned.c b/block/blk-zoned.c
index ff57fb51b338..77fce6f09f78 100644
--- a/block/blk-zoned.c
+++ b/block/blk-zoned.c
@@ -286,7 +286,11 @@ int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode,
 	if (!rep.nr_zones)
 		return -EINVAL;
 
-	zones = kcalloc(rep.nr_zones, sizeof(struct blk_zone), GFP_KERNEL);
+	if (rep.nr_zones > INT_MAX / sizeof(struct blk_zone))
+		return -ERANGE;
+
+	zones = kvmalloc(rep.nr_zones * sizeof(struct blk_zone),
+			GFP_KERNEL | __GFP_ZERO);
 	if (!zones)
 		return -ENOMEM;
 
@@ -308,7 +312,7 @@ int blkdev_report_zones_ioctl(struct block_device *bdev, fmode_t mode,
 	}
 
  out:
-	kfree(zones);
+	kvfree(zones);
 
 	return ret;
 }