[BUG][BISECTED] Freeze at loading init ramdisk

[Mirsad Todorovac <mirsad.todorovac@alu.unizg.hr>]

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Hi,

On the Ubuntu 22.04 LTS Jammy platform, on a mainline vanilla torvalds tree kernel, the boot
freezes upon first two lines and before any systemd messages.

(Please find the config attached.)

Bisecting the bug led to this result:

marvin@defiant:~/linux/kernel/linux_torvalds$ git bisect good
d97a78423c33f68ca6543de510a409167baed6f5 is the first bad commit
commit d97a78423c33f68ca6543de510a409167baed6f5
Merge: 61da593f4458 689237ab37c5
Author: Linus Torvalds <torvalds@linux-foundation.org>
Date:   Fri Jan 12 14:38:08 2024 -0800

     Merge tag 'fbdev-for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev
     
     Pull fbdev updates from Helge Deller:
      "Three fbdev drivers (~8500 lines of code) removed. The Carillo Ranch
       fbdev driver is for an Intel product which was never shipped, and for
       the intelfb and the amba-clcd drivers the drm drivers can be used
       instead.
     
       The other code changes are minor: some fb_deferred_io flushing fixes,
       imxfb margin fixes and stifb cleanups.
     
       Summary:
        - Remove intelfb fbdev driver (Thomas Zimmermann)
        - Remove amba-clcd fbdev driver (Linus Walleij)
        - Remove vmlfb Carillo Ranch fbdev driver (Matthew Wilcox)
        - fb_deferred_io flushing fixes (Nam Cao)
        - imxfb code fixes and cleanups (Dario Binacchi)
        - stifb primary screen detection cleanups (Thomas Zimmermann)"
     
     * tag 'fbdev-for-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/linux-fbdev: (28 commits)
       fbdev/intelfb: Remove driver
       fbdev/hyperv_fb: Do not clear global screen_info
       firmware/sysfb: Clear screen_info state after consuming it
       fbdev/hyperv_fb: Remove firmware framebuffers with aperture helpers
       drm/hyperv: Remove firmware framebuffers with aperture helper
       fbdev/sis: Remove dependency on screen_info
       video/logo: use %u format specifier for unsigned int values
       video/sticore: Remove info field from STI struct
       arch/parisc: Detect primary video device from device instance
       fbdev/stifb: Allocate fb_info instance with framebuffer_alloc()
       video/sticore: Store ROM device in STI struct
       fbdev: flush deferred IO before closing
       fbdev: flush deferred work in fb_deferred_io_fsync()
       fbdev: amba-clcd: Delete the old CLCD driver
       fbdev: Remove support for Carillo Ranch driver
       fbdev: hgafb: fix kernel-doc comments
       fbdev: mmp: Fix typo and wording in code comment
       fbdev: fsl-diu-fb: Fix sparse warning due to virt_to_phys() prototype change
       fbdev: imxfb: add '*/' on a separate line in block comment
       fbdev: imxfb: use __func__ for function name
       ...

  Documentation/fb/index.rst                         |    1 -
  Documentation/fb/intelfb.rst                       |  155 --
  Documentation/userspace-api/ioctl/ioctl-number.rst |    1 -
  MAINTAINERS                                        |   12 -
  arch/parisc/video/fbdev.c                          |    2 +-
  drivers/Makefile                                   |    3 +-
  drivers/firmware/sysfb.c                           |   14 +-
  drivers/gpu/drm/hyperv/hyperv_drm_drv.c            |    8 +-
  drivers/video/backlight/Kconfig                    |    7 -
  drivers/video/backlight/Makefile                   |    1 -
  drivers/video/backlight/cr_bllcd.c                 |  264 ---
  drivers/video/fbdev/Kconfig                        |   72 -
  drivers/video/fbdev/Makefile                       |    2 -
  drivers/video/fbdev/amba-clcd.c                    |  986 ---------
  drivers/video/fbdev/core/fb_defio.c                |    8 +-
  drivers/video/fbdev/fsl-diu-fb.c                   |    2 +-
  drivers/video/fbdev/hgafb.c                        |   13 +-
  drivers/video/fbdev/hyperv_fb.c                    |   20 +-
  drivers/video/fbdev/imxfb.c                        |  179 +-
  drivers/video/fbdev/intelfb/Makefile               |    8 -
  drivers/video/fbdev/intelfb/intelfb.h              |  382 ----
  drivers/video/fbdev/intelfb/intelfb_i2c.c          |  209 --
  drivers/video/fbdev/intelfb/intelfbdrv.c           | 1680 ----------------
  drivers/video/fbdev/intelfb/intelfbhw.c            | 2115 --------------------
  drivers/video/fbdev/intelfb/intelfbhw.h            |  609 ------
  drivers/video/fbdev/mmp/hw/mmp_spi.c               |    2 +-
  drivers/video/fbdev/sis/sis_main.c                 |   37 -
  drivers/video/fbdev/stifb.c                        |  109 +-
  drivers/video/fbdev/vermilion/Makefile             |    6 -
  drivers/video/fbdev/vermilion/cr_pll.c             |  195 --
  drivers/video/fbdev/vermilion/vermilion.c          | 1175 -----------
  drivers/video/fbdev/vermilion/vermilion.h          |  245 ---
  drivers/video/logo/pnmtologo.c                     |    6 +-
  drivers/video/sticore.c                            |    5 +
  include/linux/amba/clcd-regs.h                     |   87 -
  include/linux/amba/clcd.h                          |  290 ---
  include/video/sticore.h                            |    6 +-
  37 files changed, 208 insertions(+), 8708 deletions(-)
  delete mode 100644 Documentation/fb/intelfb.rst
  delete mode 100644 drivers/video/backlight/cr_bllcd.c
  delete mode 100644 drivers/video/fbdev/amba-clcd.c
  delete mode 100644 drivers/video/fbdev/intelfb/Makefile
  delete mode 100644 drivers/video/fbdev/intelfb/intelfb.h
  delete mode 100644 drivers/video/fbdev/intelfb/intelfb_i2c.c
  delete mode 100644 drivers/video/fbdev/intelfb/intelfbdrv.c
  delete mode 100644 drivers/video/fbdev/intelfb/intelfbhw.c
  delete mode 100644 drivers/video/fbdev/intelfb/intelfbhw.h
  delete mode 100644 drivers/video/fbdev/vermilion/Makefile
  delete mode 100644 drivers/video/fbdev/vermilion/cr_pll.c
  delete mode 100644 drivers/video/fbdev/vermilion/vermilion.c
  delete mode 100644 drivers/video/fbdev/vermilion/vermilion.h
  delete mode 100644 include/linux/amba/clcd-regs.h
  delete mode 100644 include/linux/amba/clcd.h
marvin@defiant:~/linux/kernel/linux_torvalds$

Hope this helps.

Best regards,
Mirsad Todorovac

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