linux-kernel - Re: [PATCH 1/1] arch:hexagon/powerpc: use KSYM_NAME

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Date:   Mon, 29 May 2023 12:45:02 +0200
From:   Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
To:     Maninder Singh <maninder1.s@...sung.com>
Cc:     bcain@...cinc.com, mpe@...erman.id.au, npiggin@...il.com,
        christophe.leroy@...roup.eu, keescook@...omium.org,
        nathanl@...ux.ibm.com, ustavoars@...nel.org, alex.gaynor@...il.com,
        gary@...yguo.net, ojeda@...nel.org, pmladek@...e.com,
        wedsonaf@...gle.com, linux-hexagon@...r.kernel.org,
        linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        Onkarnath <onkarnath.1@...sung.com>
Subject: Re: [PATCH 1/1] arch:hexagon/powerpc: use KSYM_NAME_LEN in array size

On Mon, May 29, 2023 at 7:44 AM Maninder Singh <maninder1.s@...sung.com> wrote:
>
> kallsyms_lookup which in turn calls for kallsyms_lookup_buildid()
> writes on index "KSYM_NAME_LEN - 1".
>
> Thus array size should be KSYM_NAME_LEN.
>
> for powerpc and hexagon it was defined as "128" directly.
> and commit '61968dbc2d5d' changed define value to 512,
> So both were missed to update with new size.
>
> Fixes: 61968dbc2d5d ("kallsyms: increase maximum kernel symbol length to 512")
> Signed-off-by: Onkarnath <onkarnath.1@...sung.com>
> Signed-off-by: Maninder Singh <maninder1.s@...sung.com>

Thanks for this!

There is no `From:` at the top. Since I cannot locate the patch in
Lore, did you mean to put both of you as authors perhaps? In that
case, please use a `Co-developed-by` as needed.

Perhaps it is a good idea to submit each arch independently, too.

The changes themselves look fine on a quick inspection, though the
`xmon.c` one is a global buffer (and there is another equally-sized
buffer in `xmon.c` with a hard-coded `128` constant that would be nice
to clarify).

Cheers,
Miguel