Merge "msm: mdss: information leak during buffer copy from userspace" (917494d7) · Commits · e / devices / android_kernel_xiaomi_markw

drivers/video/msm/mdss/mdss_dsi.c

+7 −2

Original line number	Original line	Diff line number	Diff line
	@@ -894,10 +894,15 @@ static ssize_t mdss_dsi_cmd_write(struct file file, const char __user p,

	/* Writing in batches is possible */		/* Writing in batches is possible */
	ret = simple_write_to_buffer(string_buf, blen, ppos, p, count);		ret = simple_write_to_buffer(string_buf, blen, ppos, p, count);
			if (ret < 0) {
			pr_err("%s: Failed to copy data\n", __func__);
			mutex_unlock(&pcmds->dbg_mutex);
			return -EINVAL;
			}

	string_buf[blen] = '\0';		string_buf[ret] = '\0';
	pcmds->string_buf = string_buf;		pcmds->string_buf = string_buf;
	pcmds->sblen = blen;		pcmds->sblen = count;
	mutex_unlock(&pcmds->dbg_mutex);		mutex_unlock(&pcmds->dbg_mutex);
	return ret;		return ret;
	}		}