On 05/03/2026 11:32, Marco Felsch wrote:

On 26-03-05, ming.qian@oss.nxp.com wrote:

quoted

From: Ming Qian <redacted>

Fix a kernel panic when probing the driver as a module:

  Unable to handle kernel paging request at virtual address
  ffffd9c18eb05000
  of_find_matching_node_and_match+0x5c/0x1a0
  hantro_probe+0x2f4/0x7d0 [hantro_vpu]

The imx8mq_vpu_shared_resources array is referenced by variant
structures through their shared_devices field. When built as a
module, __initconst causes this data to be freed after module
init, but it's later accessed during probe, causing a page fault.

The imx8mq_vpu_shared_resources is referenced from non-init code,
so keeping __initconst or __initconst_or_module here is wrong.

Drop the __initconst annotation and let it live in the normal .rodata
section.

Fixes: e0203ddf9af7 ("media: verisilicon: Avoid G2 bus error while decoding H.264 and HEVC")
Reported-by: Franz Schnyder <redacted>
Closes: https://lore.kernel.org/all/n3qmcb62tepxltoskpf7ws6yiirc2so62ia23b42rj3wlmpl67@rvkbuirx7kkp/ (local)
Suggested-by: Marco Felsch <redacted>

This fix was suggested by Krzysztof :)

Or at least a bug of __initconst called from regular non-init probe code
leading to bugs during probe deferrals or during unbind-bind cycles...

Closes:
https://lore.kernel.org/all/68ef934f-baa0-4bf6-93d8-834bbc441e66@kernel.org/ (local)
Reported-by: Krzysztof Kozlowski <redacted>

?

Best regards,
Krzysztof