From 272093471305261c4e07a2fc97c2d1e53cd56819 Mon Sep 17 00:00:00 2001 From: Ye Weihua Date: Thu, 28 Jul 2022 10:07:58 +0800 Subject: [PATCH] crypto: hisilicon/zip - fix mismatch in get/set sgl_sge_nr [ Upstream commit d74f9340097a881869c4c22ca376654cc2516ecc ] KASAN reported this Bug: [17619.659757] BUG: KASAN: global-out-of-bounds in param_get_int+0x34/0x60 [17619.673193] Read of size 4 at addr fffff01332d7ed00 by task read_all/1507958 ... [17619.698934] The buggy address belongs to the variable: [17619.708371] sgl_sge_nr+0x0/0xffffffffffffa300 [hisi_zip] There is a mismatch in hisi_zip when get/set the variable sgl_sge_nr. The type of sgl_sge_nr is u16, and get/set sgl_sge_nr by param_get/set_int. Replacing param_get/set_int to param_get/set_ushort can fix this bug. Fixes: f081fda293ffb ("crypto: hisilicon - add sgl_sge_nr module param for zip") Signed-off-by: Ye Weihua Signed-off-by: Herbert Xu Signed-off-by: Sasha Levin --- drivers/crypto/hisilicon/zip/zip_crypto.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/crypto/hisilicon/zip/zip_crypto.c b/drivers/crypto/hisilicon/zip/zip_crypto.c index 9520a41..a91e6e0 100644 --- a/drivers/crypto/hisilicon/zip/zip_crypto.c +++ b/drivers/crypto/hisilicon/zip/zip_crypto.c @@ -122,12 +122,12 @@ static int sgl_sge_nr_set(const char *val, const struct kernel_param *kp) if (ret || n == 0 || n > HISI_ACC_SGL_SGE_NR_MAX) return -EINVAL; - return param_set_int(val, kp); + return param_set_ushort(val, kp); } static const struct kernel_param_ops sgl_sge_nr_ops = { .set = sgl_sge_nr_set, - .get = param_get_int, + .get = param_get_ushort, }; static u16 sgl_sge_nr = HZIP_SGL_SGE_NR; -- 2.7.4