7.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sajal Gupta [ Upstream commit cb732d027aa18e1fcf9d2797f47d20b179ebc59c ] The rotation argument to drm_plane_create_rotation_property() is set to DRM_MODE_ROTATE_0, and the device reported rotation bitmask is used as the supported_rotations argument. The driver never validates that GUD_ROTATION_0 is present, so a device that omits it from its GUD_PROPERTY_ROTATION triggers the WARN_ON(rotation & ~supported_rotations) in drm_plane_create_rotation_property() Fix this by skipping the creation of rotation property if the device doesn't have the GUD_ROTATION_0 bit Fixes: 40e1a70b4aed ("drm: Add GUD USB Display driver") Reported-by: syzbot+efe2810681f1b065d3a8@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=efe2810681f1b065d3a8 Tested-by: syzbot+efe2810681f1b065d3a8@syzkaller.appspotmail.com Signed-off-by: Sajal Gupta Acked-by: Ruben Wauters Signed-off-by: Ruben Wauters Link: https://patch.msgid.link/20260821071812.16500-1-sajal2005gupta@gmail.com Signed-off-by: Sasha Levin --- drivers/gpu/drm/gud/gud_drv.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/gpu/drm/gud/gud_drv.c b/drivers/gpu/drm/gud/gud_drv.c index 89bd6ca36003f..3a1b9e2a2eaa1 100644 --- a/drivers/gpu/drm/gud/gud_drv.c +++ b/drivers/gpu/drm/gud/gud_drv.c @@ -289,6 +289,8 @@ static int gud_plane_add_properties(struct gud_device *gdrm) * but mask out any additions on future devices. */ val &= GUD_ROTATION_MASK; + if (!(val & GUD_ROTATION_0)) + continue; ret = drm_plane_create_rotation_property(&gdrm->plane, DRM_MODE_ROTATE_0, val); break; -- 2.53.0