Re: [next-20251022] Kernel Boot Warnings at arch/powerpc/kernel/trace/ftrace.c:234

[Hari Bathini <hbathini@linux.ibm.com>]

Hi Petr,

On 23/10/25 2:42 pm, Petr Mladek wrote:
> On Wed 2025-10-22 19:56:45, Venkat Rao Bagalkote wrote:
>>
>> On 22/10/25 6:36 pm, Petr Mladek wrote:
>>> On Wed 2025-10-22 17:36:18, Venkat Rao Bagalkote wrote:
>>>> On 22/10/25 1:52 pm, Venkat Rao Bagalkote wrote:
>>>>> Greetings!!!
>>>>>
>>>>>
>>>>> IBM CI has reported kernel boot warnings with next-20251022 kernel. I
>>>>> see there are couple of warnings hit and eventually system boots to
>>>>> emergency mode.
>>>>>
>>>>>
>>>> With the identified first bad commit, is casuing the kernel to boot to
>>>> emergency mode. I reverted the bad commit and built the kernel, then kernel
>>>> is booting fine, but with boot warnings.
>>> I guess that it is the same problem which should get fixed by the patch
>>> https://lore.kernel.org/r/e52ee3edf32874da645a9e037a7d77c69893a22a.1760982784.git.jpoimboe@kernel.org
>>
>>
>> Thank you Petr, for pointing to the fix patch. It fixes the kernel booting
>> to emergency mode.
> 
> Great.
> 
>> But boot warning still persists.
> 
> I looks like another problem. I would expect that it is in
> the ftrace code, either in the generic or arch-specific part.
Yeah. This is part of arch-specific code that does init of ftrace
out line stubs. The problem seems to be since commit 1ba9f8979426
("vmlinux.lds: Unify TEXT_MAIN, DATA_MAIN, and related macros").
Before this commit, .text.startup section was featured in INIT_TEXT
but now it seems to feature in TEXT. Is this change right/intentional?
If yes, I can post a fix patch in ftrace arch-specific code accordingly.

- Hari