Hi Julio, kernel test robot noticed the following build warnings:
[auto build test WARNING on drm-misc/drm-misc-next] [also build test WARNING on drm/drm-next linus/master v7.3-rc6 next-20261008] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/Julio-Faracco/drm-qxl-Fix-out-of-bounds-read-in-client-monitors-head-access/20261008-125034 base: https://gitlab.freedesktop.org/drm/misc/kernel.git drm-misc-next patch link: https://lore.kernel.org/r/20261008155034.55688-1-jcfaracco%40gmail.com patch subject: [PATCH V2] drm/qxl: Fix out-of-bounds read in client monitors head access config: x86_64-randconfig-1017-20261009 (https://download.01.org/0day-ci/archive/20261009/[email protected]/config) compiler: gcc-14 (Debian 14.2.0-19) 14.2.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261009/[email protected]/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot <[email protected]> | Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/ All warnings (new ones prefixed by >>): drivers/gpu/drm/qxl/qxl_display.c: In function 'qxl_conn_get_modes': >> drivers/gpu/drm/qxl/qxl_display.c:1069:28: warning: unused variable 'qdev' >> [-Wunused-variable] 1069 | struct qxl_device *qdev = to_qxl(dev); | ^~~~ vim +/qdev +1069 drivers/gpu/drm/qxl/qxl_display.c f64122c1f6ade30 Dave Airlie 2013-02-25 1065 f64122c1f6ade30 Dave Airlie 2013-02-25 1066 static int qxl_conn_get_modes(struct drm_connector *connector) f64122c1f6ade30 Dave Airlie 2013-02-25 1067 { 1b043677d4be206 Gerd Hoffmann 2019-01-18 1068 struct drm_device *dev = connector->dev; e304f8a0513b830 Simona Vetter 2020-04-15 @1069 struct qxl_device *qdev = to_qxl(dev); 1b043677d4be206 Gerd Hoffmann 2019-01-18 1070 struct qxl_output *output = drm_connector_to_qxl_output(connector); 1b000494978d2f3 Shayenne da Luz Moura 2018-10-26 1071 unsigned int pwidth = 1024; 1b000494978d2f3 Shayenne da Luz Moura 2018-10-26 1072 unsigned int pheight = 768; bf72b40d47f83ac Julio Faracco 2026-10-08 1073 struct qxl_head *head; 2d856f94e6d2532 Gerd Hoffmann 2017-03-01 1074 int ret = 0; f64122c1f6ade30 Dave Airlie 2013-02-25 1075 bf72b40d47f83ac Julio Faracco 2026-10-08 1076 head = qxl_output_get_client_head(output); bf72b40d47f83ac Julio Faracco 2026-10-08 1077 if (head) { 1b043677d4be206 Gerd Hoffmann 2019-01-18 1078 if (head->width) 1b043677d4be206 Gerd Hoffmann 2019-01-18 1079 pwidth = head->width; 1b043677d4be206 Gerd Hoffmann 2019-01-18 1080 if (head->height) 1b043677d4be206 Gerd Hoffmann 2019-01-18 1081 pheight = head->height; 1b043677d4be206 Gerd Hoffmann 2019-01-18 1082 } 1b043677d4be206 Gerd Hoffmann 2019-01-18 1083 b5f030b7b4a5c8e Gerd Hoffmann 2019-01-18 1084 ret += drm_add_modes_noedid(connector, 8192, 8192); b5f030b7b4a5c8e Gerd Hoffmann 2019-01-18 1085 ret += qxl_add_extra_modes(connector); 1b043677d4be206 Gerd Hoffmann 2019-01-18 1086 ret += qxl_add_monitors_config_modes(connector); 1b043677d4be206 Gerd Hoffmann 2019-01-18 1087 drm_set_preferred_mode(connector, pwidth, pheight); f64122c1f6ade30 Dave Airlie 2013-02-25 1088 return ret; f64122c1f6ade30 Dave Airlie 2013-02-25 1089 } f64122c1f6ade30 Dave Airlie 2013-02-25 1090 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
