peter/spectre-meltdown-checker
peter/spectre-meltdown-checker
1
0
Fork 0
mirror of https://github.com/speed47/spectre-meltdown-checker.git synced 2025-01-10 03:10:26 +01:00
Code Issues Projects Releases Wiki Activity

cpuid and msr module check

Browse Source 
This adds a check before loading the cpuid and msr modules under linux, ensuring they are not unloaded in exit_cleanup() if they were initially present.
This commit is contained in:
rrobgill 2018-05-04 07:21:48 +10:00 committed by Stéphane Lesimple
parent 4acd0f647a
commit 1c0f6d9580
1 changed files with 12 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
spectre-meltdown-checker.sh
View File

@ -732,8 +732,12 @@ mount_debugfs()
load_msr()
{
if [ "$os" = Linux ]; then
if ! grep -e msr /proc/modules 2>/dev/null; then
modprobe msr 2>/dev/null && insmod_msr=1
_debug "attempted to load module msr, insmod_msr=$insmod_msr"
_debug "attempted to load module msr, insmod_msr=$insmod_cpuid"
else
_debug "msr module already loaded"
fi
else
if ! kldstat -q -m cpuctl; then
kldload cpuctl 2>/dev/null && kldload_cpuctl=1
@ -747,8 +751,12 @@ load_msr()
load_cpuid()
{
if [ "$os" = Linux ]; then
if ! grep -e cpuid /proc/modules 2>/dev/null; then
modprobe cpuid 2>/dev/null && insmod_cpuid=1
_debug "attempted to load module cpuid, insmod_cpuid=$insmod_cpuid"
else
_debug "cpuid module already loaded"
fi
else
if ! kldstat -q -m cpuctl; then
kldload cpuctl 2>/dev/null && kldload_cpuctl=1