Re: [PATCH] riscv: Fix a NULL pointer reference in machine_kexec_prepare

Tao Liu <[email protected]> Tue, 30 Jun 2026 12:23:41 +1200

Newsgroups	org.kernel.vger.kernel-janitors,org.infradead.lists.linux-riscv,org.kernel.vger.linux-kernel
Message-ID	<CAO7dBbW9s6uu3gHHF5QR=_HdqN9shEfYBH6roR814ZEAw392Jw@mail.gmail.com>

Hi Markus,

On Tue, Jun 30, 2026 at 1:00 AM Markus Elfring <[email protected]> wrote:
>
> > A NULL pointer reference issue is noticed in riscv's machine_kexec_prepare,
> …
>                  dereference?
>
>
> …
> > Fix this by simply adding a check before copy.
>
> How do you think about to add any tags (like “Fixes” and “Cc”) accordingly?

Right, thanks for the suggestion. I will improve the commit message
wording in v3.

Thanks,
Tao Liu

>
> See also:
> * https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/submitting-patches.rst?h=v7.2-rc1#n145
> * https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/stable-kernel-rules.rst?h=v7.2-rc1#n34
>
>
> Regards,
> Markus
>