From b53cc98db93b672fcaa0bfa1a0e232bbe3ce65d7 Mon Sep 17 00:00:00 2001
From: Qiyang Sun <qs2g22@soton.ac.uk>
Date: Thu, 15 Aug 2024 21:35:18 +0100
Subject: [PATCH] Fastinit trigger kernel panic if argument invalid
---
recipes-core/fastinit/files/fastinit.sh | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/recipes-core/fastinit/files/fastinit.sh b/recipes-core/fastinit/files/fastinit.sh
index 5d805bb..5c89cc2 100755
--- a/recipes-core/fastinit/files/fastinit.sh
+++ b/recipes-core/fastinit/files/fastinit.sh
@@ -77,9 +77,12 @@ level_six() {
runlevel=$1
if [ -z "$runlevel" ]; then
- warn_to_kernel "cannot read runlevel from argument"
+ crit_to_kernel "cannot read runlevel from argument"
warn_to_kernel "please edit cmdline.txt in bootfs"
warn_to_kernel "usage: init=/usr/sbin/fastinit RUNLEVEL"
+ crit_to_kernel "triggering kernel panic (c) using sysrq"
+ mount -t proc proc /proc
+ echo c > /proc/sysrq-trigger
else
case $runlevel in
0)
@@ -105,8 +108,11 @@ else
level_six
;;
*)
- warn_to_kernel "Runlevel $runlevel not implemented"
+ crit_to_kernel "Runlevel $runlevel not implemented"
warn_to_kernel "usage: /usr/sbin/fastinit RUNLEVEL"
+ crit_to_kernel "triggering kernel panic (c) using sysrq"
+ mount -t proc proc /proc
+ echo c > /proc/sysrq-trigger
;;
esac
fi
--
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