Commit 9c81c99b authored Jun 12, 2019 by Zhengyuan Liu Committed by Mike Snitzer Jul 09, 2019

dm crypt: use struct_size() when allocating encryption context



Use struct_size() to avoid open-coded equivalent that is prone to a type
mistake.

Signed-off-by: Zhengyuan Liu <liuzhengyuan@kylinos.cn>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

parent 5f1c56b3

drivers/md/dm-crypt.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -2699,7 +2699,7 @@ static int crypt_ctr(struct dm_target ti, unsigned int argc, char *argv)
		return -EINVAL;
		}

		cc = kzalloc(sizeof(cc) + key_size sizeof(u8), GFP_KERNEL);
		cc = kzalloc(struct_size(cc, key, key_size), GFP_KERNEL);
		if (!cc) {
		ti->error = "Cannot allocate encryption context";
		return -ENOMEM;