Linus Torvalds 086ff84617 fbdev fixes and updates for kernel v5.19-rc6:
fbcon now prevents switching to screen resolutions which are smaller
 than the font size, and prevents enabling a font which is bigger than
 the current screen resolution. This fixes vmalloc-out-of-bounds accesses
 found by KASAN.
 
 Guiling Deng fixed a bug where the centered fbdev logo wasn't displayed
 correctly if the screen size matched the logo size.
 
 Hsin-Yi Wang provided a patch to include errno.h to fix build when
 CONFIG_OF isn't enabled.
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Merge tag 'for-5.19/fbdev-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev

Pull fbdev fixes from Helge Deller:

 - fbcon now prevents switching to screen resolutions which are smaller
   than the font size, and prevents enabling a font which is bigger than
   the current screen resolution. This fixes vmalloc-out-of-bounds
   accesses found by KASAN.

 - Guiling Deng fixed a bug where the centered fbdev logo wasn't
   displayed correctly if the screen size matched the logo size.

 - Hsin-Yi Wang provided a patch to include errno.h to fix build when
   CONFIG_OF isn't enabled.

* tag 'for-5.19/fbdev-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev:
  fbcon: Use fbcon_info_from_console() in fbcon_modechange_possible()
  fbmem: Check virtual screen sizes in fb_set_var()
  fbcon: Prevent that screen size is smaller than font size
  fbcon: Disallow setting font bigger than screen size
  video: of_display_timing.h: include errno.h
  fbdev: fbmem: Fix logo center image dx issue
2022-07-08 11:03:26 -07:00
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