peter/spectre-meltdown-checker
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fix MSR reading, need rdmsr for now

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Stéphane Lesimple 2018-01-07 18:13:25 +01:00
parent 761c2b80e4
commit 8c2fd0f0bb
1 changed files with 16 additions and 7 deletions
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17
spectre-meltdown-checker.sh
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@ -1,7 +1,7 @@
#! /bin/sh #! /bin/sh
# Spectre & Meltdown checker # Spectre & Meltdown checker
# Stephane Lesimple # Stephane Lesimple
VERSION=0.04 VERSION=0.05
pstatus() pstatus()
{ {
@ -116,14 +116,23 @@ fi
if [ ! -e /dev/cpu/0/msr ]; then if [ ! -e /dev/cpu/0/msr ]; then
pstatus yellow UNKNOWN "couldn't read /dev/cpu/0/msr, is msr support enabled in your kernel?" pstatus yellow UNKNOWN "couldn't read /dev/cpu/0/msr, is msr support enabled in your kernel?"
else else
dd if=/dev/cpu/0/msr of=/dev/null bs=1 count=8 skip=72 2>/dev/null if which rdmsr >/dev/null 2>&1; then
rdmsr 0x48 >/dev/null 2>&1
if [ $? -eq 0 ]; then if [ $? -eq 0 ]; then
pstatus green YES pstatus green YES
else else
pstatus red NO pstatus red NO
fi fi
#dd if=/dev/cpu/0/msr of=/dev/null bs=1 count=8 skip=73 2>/dev/null else
#/bin/echo $? pstatus yellow UNKNOWN "missing 'rdmsr' tool, please install it, usually it's in the msr-tools package"
# doesn't work:
#dd if=/dev/cpu/0/msr of=/dev/null bs=1 count=8 skip=72 2>/dev/null
#if [ $? -eq 0 ]; then
# pstatus green YES
#else
# pstatus red NO
#fi
fi
fi fi
if [ "$insmod_msr" = 1 ]; then if [ "$insmod_msr" = 1 ]; then