The patch titled
Subject: Documentation: sysctl: correct kexec_load_disabled
has been added to the -mm mm-nonmm-unstable branch. Its filename is
documentation-sysctl-correct-kexec_load_disabled.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/documentation-sysctl-correct-kexec_load_disabled.patch
This patch will later appear in the mm-nonmm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
Subject: Documentation: sysctl: correct kexec_load_disabled
Date: Wed, 04 Jan 2023 15:38:46 +0100
Patch series "kexec: Add new parameter to limit the access to kexec", v6.
Add two parameter to specify how many times a kexec kernel can be loaded.
These parameter allow hardening the system.
While we are at it, fix a documentation issue and refactor some code.
This patch (of 3):
kexec_load_disabled affects both ``kexec_load`` and ``kexec_file_load``
syscalls. Make it explicit.
Link: https://lkml.kernel.org/r/20221114-disable-kexec-reset-v6-0-6a8531a09b9a@xxxxxxxxxxxx
Link: https://lkml.kernel.org/r/20221114-disable-kexec-reset-v6-1-6a8531a09b9a@xxxxxxxxxxxx
Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx>
Reviewed-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
Acked-by: Baoquan He <bhe@xxxxxxxxxx>
Cc: Bagas Sanjaya <bagasdotme@xxxxxxxxx>
Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx>
Cc: Guilherme G. Piccoli <gpiccoli@xxxxxxxxxx>
Cc: Joel Fernandes (Google) <joel@xxxxxxxxxxxxxxxxx>
Cc: Jonathan Corbet <corbet@xxxxxxx>
Cc: Philipp Rudo <prudo@xxxxxxxxxx>
Cc: Ross Zwisler <zwisler@xxxxxxxxxx>
Cc: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
Documentation/admin-guide/sysctl/kernel.rst | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
--- a/Documentation/admin-guide/sysctl/kernel.rst~documentation-sysctl-correct-kexec_load_disabled
+++ a/Documentation/admin-guide/sysctl/kernel.rst
@@ -453,9 +453,10 @@ this allows system administrators to ove
kexec_load_disabled
===================
-A toggle indicating if the ``kexec_load`` syscall has been disabled.
-This value defaults to 0 (false: ``kexec_load`` enabled), but can be
-set to 1 (true: ``kexec_load`` disabled).
+A toggle indicating if the syscalls ``kexec_load`` and
+``kexec_file_load`` have been disabled.
+This value defaults to 0 (false: ``kexec_*load`` enabled), but can be
+set to 1 (true: ``kexec_*load`` disabled).
Once true, kexec can no longer be used, and the toggle cannot be set
back to false.
This allows a kexec image to be loaded before disabling the syscall,
_
Patches currently in -mm which might be from ribalda@xxxxxxxxxxxx are
scripts-spellingtxt-add-permitted.patch
kvm-x86-fix-trivial-typo.patch
documentation-sysctl-correct-kexec_load_disabled.patch
kexec-factor-out-kexec_load_permitted.patch
kexec-introduce-sysctl-parameters-kexec_load_limit_.patch
