Re: [PATCH v3] riscv: Fix a NULL pointer dereference in machine_kexec_prepare

Markus Elfring <[email protected]> Wed, 1 Jul 2026 08:00:14 +0200

Newsgroups	org.kernel.vger.linux-integrity,org.infradead.lists.kexec,org.infradead.lists.linux-riscv,org.kernel.vger.kernel-janitors,org.kernel.vger.linux-kernel
Message-ID	<[email protected]>

…
> Fix this by simply adding a check before copy.

                                           a data copy attempt?



> Fixes: b7fb4d78a6ad ("RISC-V: use memcpy for kexec_file mode")

See also once more:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/process/stable-kernel-rules.rst?h=v7.2-rc1#n34


Would a summary phrase like “Prevent null pointer dereference in machine_kexec_prepare()”
be nicer?

Regards,
Markus