[CRYPTO] api: Require block size to be less than PAGE_SIZE/8
The cipher code path may allocate up to two blocks of data on the stack.
Therefore we need to place limits on the maximum block size.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
diff --git a/crypto/api.c b/crypto/api.c
index 2715afd..e26156f 100644
--- a/crypto/api.c
+++ b/crypto/api.c
@@ -251,7 +251,7 @@
if (alg->cra_alignmask & alg->cra_blocksize)
return -EINVAL;
- if (alg->cra_blocksize > PAGE_SIZE)
+ if (alg->cra_blocksize > PAGE_SIZE / 8)
return -EINVAL;
if (alg->cra_priority < 0)