Drivers are supposed to fix this up if needed if they don't outright
reject it. Uncovered by 6c11df58fd1a ("fbmem: Check virtual screen
sizes in fb_set_var()").Reported-by: syzbot+20dcf81733d43ddff...@syzkaller.appspotmail.com Link: https://syzkaller.appspot.com/bug?id=c5faf983bfa4a607de530cd3bb008888bf06cefc Cc: sta...@vger.kernel.org # v5.4+ Cc: Daniel Vetter <dan...@ffwll.ch> Cc: Javier Martinez Canillas <javi...@redhat.com> Cc: Thomas Zimmermann <tzimmerm...@suse.de> Signed-off-by: Daniel Vetter <daniel.vet...@intel.com> --- drivers/gpu/drm/drm_fb_helper.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c index 59409820f424..eb4ece3e0027 100644 --- a/drivers/gpu/drm/drm_fb_helper.c +++ b/drivers/gpu/drm/drm_fb_helper.c @@ -1595,6 +1595,9 @@ int drm_fb_helper_check_var(struct fb_var_screeninfo *var, return -EINVAL; } + var->xres_virtual = fb->width; + var->yres_virtual = fb->height; + /* * Workaround for SDL 1.2, which is known to be setting all pixel format * fields values to zero in some cases. We treat this situation as a -- 2.40.0
