From: jsg <jsg@openbsd.org>
Date: Wed, 3 Nov 2021 02:37:48 +0000 (+0000)
Subject: drm/amdgpu: fix out of bounds write
X-Git-Url: http://artulab.com/gitweb/?a=commitdiff_plain;h=e3508b1cbed811a0eef3dbdaa5bbf7ef4f2f6820;p=openbsd

drm/amdgpu: fix out of bounds write

From Thelford Williams
eb3b6805e3e9d98b2507201fd061a231988ce623 in linux 5.10.y/5.10.77
5afa7898ab7a0ec9c28556a91df714bf3c2f725e in mainline linux
---

diff --git a/sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c b/sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
index fbb65c95464..e43f82bcb23 100644
--- a/sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
+++ b/sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c
@@ -264,7 +264,7 @@ static ssize_t dp_link_settings_write(struct file *f, const char __user *buf,
 	if (!wr_buf)
 		return -ENOSPC;
 
-	if (parse_write_buffer_into_params(wr_buf, size,
+	if (parse_write_buffer_into_params(wr_buf, wr_buf_size,
 					   (long *)param, buf,
 					   max_param_num,
 					   &param_nums)) {