From d89b3f22cf7b6bba8081f6d16c9087019fdcf586 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Mon, 18 Nov 2019 16:51:32 +0100 Subject: [PATCH] drm/modes: parse_cmdline: Explicitly memset the passed in drm_cmdline_mode struct Commit d1fe276b5115f0d581c3cfe6154633b3547e8aab upstream. Instead of only setting mode->specified on false on an early exit and leaving e.g. mode->bpp_specified and mode->refresh_specified as is, lets be consistent and just zero out the entire passed in struct at the top of drm_mode_parse_command_line_for_connector() Changes in v3: -Drop "mode->specified = false;" line instead of the "return false;" (oops) This crasher was reported-by: kernel test robot Acked-by: Maxime Ripard Signed-off-by: Hans de Goede Link: https://patchwork.freedesktop.org/patch/msgid/20191118155134.30468-11-hdegoede@redhat.com --- drivers/gpu/drm/drm_modes.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -1752,12 +1752,11 @@ bool drm_mode_parse_command_line_for_con char *bpp_end_ptr = NULL, *refresh_end_ptr = NULL; int i, len, ret; + memset(mode, 0, sizeof(*mode)); mode->panel_orientation = DRM_MODE_PANEL_ORIENTATION_UNKNOWN; - if (!mode_option) { - mode->specified = false; + if (!mode_option) return false; - } name = mode_option;