Replace 'sprintf' with 'scnprintf' to avoid overrun. Signed-off-by: Weili Qian <qianweili@xxxxxxxxxx> Reviewed-by: Zhou Wang <wangzhou1@xxxxxxxxxxxxx> --- 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