]> git.ipfire.org Git - thirdparty/kernel/stable.git/commit
crypto: hisilicon - Cap block size at 2^31
authorHerbert Xu <herbert@gondor.apana.org.au>
Thu, 4 Jun 2020 07:37:50 +0000 (17:37 +1000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 24 Jun 2020 15:49:13 +0000 (17:49 +0200)
commitea91187b906d2252bcb0c6de610768a4fb517045
tree90210f8649c18eb6a4bf697f6a04c53f41c06391
parent4813dd656732207ad9df7738652bbbbde4c7c928
crypto: hisilicon - Cap block size at 2^31

[ Upstream commit c61e5644c69775ae9d54b86018fca238aca64a9b ]

The function hisi_acc_create_sg_pool may allocate a block of
memory of size PAGE_SIZE * 2^(MAX_ORDER - 1).  This value may
exceed 2^31 on ia64, which would overflow the u32.

This patch caps it at 2^31.

Reported-by: kernel test robot <lkp@intel.com>
Fixes: d8ac7b85236b ("crypto: hisilicon - fix large sgl memory...")
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/crypto/hisilicon/sgl.c