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| author |   Harshvardhan Jha <harshvardhan.jha@oracle.com> | 2021-07-09 13:09:59 +0530 |
|---|---|---|
| committer |   Daniel Vetter <daniel.vetter@ffwll.ch> | 2021-07-09 10:06:11 +0200 |
| commit | ea9a897b8affa0f7b4c90182b785dded74e434aa (patch) | |
| tree | d18cbb71b87da26fdea6b6702b0e4b3eb590fcb1 /drivers | |
| parent | drm/vkms: Create a debugfs file to get vkms config data (diff) | |
| download | wireguard-linux-ea9a897b8affa0f7b4c90182b785dded74e434aa.tar.xz wireguard-linux-ea9a897b8affa0f7b4c90182b785dded74e434aa.zip | |
drm/gma500: Fix end of loop tests for list_for_each_entry
The list_for_each_entry() iterator, "connector" in this code, can never be
NULL. If we exit the loop without finding the correct connector then
"connector" points invalid memory that is an offset from the list head.
This will eventually lead to memory corruption and presumably a kernel
crash.
Fixes: 9bd81acdb648 ("gma500: Convert Oaktrail to work with new output handling")
Signed-off-by: Harshvardhan Jha <harshvardhan.jha@oracle.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210709073959.11443-1-harshvardhan.jha@oracle.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/gma500/oaktrail_lvds.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/gma500/oaktrail_lvds.c b/drivers/gpu/drm/gma500/oaktrail_lvds.c index 1f2f892961d6..f9b1f88c73bd 100644 --- a/drivers/gpu/drm/gma500/oaktrail_lvds.c +++ b/drivers/gpu/drm/gma500/oaktrail_lvds.c @@ -117,7 +117,7 @@ static void oaktrail_lvds_mode_set(struct drm_encoder *encoder, break; } - if (!connector) { + if (list_entry_is_head(connector, &mode_config->connector_list, head)) { DRM_ERROR("Couldn't find connector when setting mode"); gma_power_end(dev); return; |