Merge "drm/msm : check buffer size before writing to user buffer" (d1523be5) · Commits · e / devices / android_kernel_sony_msm8998

drivers/gpu/drm/msm/sde_dbg.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -1643,6 +1643,11 @@ static ssize_t sde_evtlog_dump_read(struct file file, char __user buff,

		len = sde_evtlog_dump_to_buffer(sde_dbg_base.evtlog, evtlog_buf,
		SDE_EVTLOG_BUF_MAX, true);
		if (len < 0 \|\| len > count) {
		pr_err("len is more than user buffer size");
		return 0;
		}

		if (copy_to_user(buff, evtlog_buf, len))
		return -EFAULT;
		*ppos += len;