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 <yeweihua4@xxxxxxxxxx>
---
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 9520a4113c81..a91e6e0e9c69 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;
--
2.17.1
