commit 7302533aac2df321b76e8a113e5cfa529c825b09
author Herbert Xu <herbert@gondor.apana.org.au> Sat Jan 07 16:24:15 2006 +1100
committer David S. Miller <davem@sunset.davemloft.net> Mon Jan 09 14:15:58 2006 -0800
tree 9499633f4d5b6eeecc41ac50cca7fcf5310efd9e
parent bcb0ad2b34daade529ce1f38eede0ea8b7309535

[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>

crypto/api.c

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)