Replace 'sprintf' with 'scnprintf' to avoid overrun.
Signed-off-by: Weili Qian <[email protected]>
Reviewed-by: Zhou Wang <[email protected]>
---
drivers/crypto/hisilicon/qm.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/crypto/hisilicon/qm.c b/drivers/crypto/hisilicon/qm.c
index 17f84db..25c5414 100644
--- a/drivers/crypto/hisilicon/qm.c
+++ b/drivers/crypto/hisilicon/qm.c
@@ -932,7 +932,8 @@ static ssize_t qm_debug_read(struct file *filp, char __user *buf,
return -EINVAL;
}
mutex_unlock(&file->lock);
- ret = sprintf(tbuf, "%u\n", val);
+
+ ret = scnprintf(tbuf, QM_DBG_TMP_BUF_LEN, "%u\n", val);
return simple_read_from_buffer(buf, count, pos, tbuf, ret);
}
--
2.8.1