[Bug 2120508] Re: [SRU] Kernel 6.17 support in broadcom-sta

[Mustafa Kabak]

I am using Lubuntu 24.04 LTS.
I have installed broadcom-sta-dkms 6.30.223.271-23ubuntu1.2 from noble-proposed and tried it with the two kernels I have (6.14.0-37-generic and 6.17.0-14-generic).
With both kernels I can connect to my wireless network. I don't see the UBSAN index out of bounds error.
While updating I didn't get the dkms compile error I was getting before.
Thanks for the fix.

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Title:
  [SRU] Kernel 6.17 support in broadcom-sta

Status in broadcom-sta package in Ubuntu:
  Fix Released
Status in broadcom-sta source package in Noble:
  Fix Committed
Status in broadcom-sta source package in Plucky:
  Invalid
Status in broadcom-sta source package in Questing:
  Fix Released

Bug description:
  [SRU Justification]

  [ Impact ]

  Failed to build against kernel v6.17-rc1.

  [ Test Plan ]

  1. Install kernels >= 6.17. For Noble, linux-oem-6.17 is available:
     $ sudo apt-get install --no-install-recommends --yes \
         linux-oem-6.17

  2. For Questing and Noble, install also stock kernel to ensure we don't break existing setup:
     $ sudo apt-get install --no-install-recommends --yes \
         linux-generic

  3. Install broadcom-sta-dkms from noble -proposed pocket. The dkms
  should rebuild itself against the running kernel automatically; if not
  rebuild them manually with:

     $ sudo dkms install --force broadcom-sta/6.30.223.271 -k $(uname -r)
     # With Questing
     $ dkms status
     broadcom-sta/6.30.223.271, 6.17.0-5-generic, x86_64: installed
     # With Noble
     $ dkms status
     broadcom-sta/6.30.223.271, 6.17.0-1002-oem, x86_64: installed
     broadcom-sta/6.30.223.271, 6.8.0-81-generic, x86_64: installed

  4. Reboot to load the kernel module
  5. The wl module should be loaded automatically and wireless lan should be usable as before.
  6. There should not be any UBSAN warning in dmesg, e.g.:
     ```
     [ 28.822952] UBSAN: array-index-out-of-bounds in /var/lib/dkms/broadcom-wl/6.30.223.271/build/src/wl/sys/wl_linux.c:1938:4
     ```

  [ Where problems could occur ]

  This doesn't affect the rest part of the system, and it doesn't
  introduce functional changes.

  [ Other Info ]

  This affects series with kernels >= 6.17. Nominate Questing and Noble
  for fixing.

  Kernel 6.17 will not be introduced in Plucky

  ========== original bug report ==========

  A patch to fix building for kernel 6.17-rc1 is at
  https://gist.github.com/joanbm/4e7f18febc2c25f5fdf8143a739dccd1?permalink_comment_id=5717588#gistcomment-5717588

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