diff options
| -rwxr-xr-x | spectre-meltdown-checker.sh | 23 |
1 files changed, 16 insertions, 7 deletions
diff --git a/spectre-meltdown-checker.sh b/spectre-meltdown-checker.sh index d138bd2..249d986 100755 --- a/spectre-meltdown-checker.sh +++ b/spectre-meltdown-checker.sh @@ -1,7 +1,7 @@ #! /bin/sh # Spectre & Meltdown checker # Stephane Lesimple -VERSION=0.04 +VERSION=0.05 pstatus() { @@ -116,14 +116,23 @@ fi if [ ! -e /dev/cpu/0/msr ]; then pstatus yellow UNKNOWN "couldn't read /dev/cpu/0/msr, is msr support enabled in your kernel?" else - 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 + if which rdmsr >/dev/null 2>&1; then + rdmsr 0x48 >/dev/null 2>&1 + if [ $? -eq 0 ]; then + pstatus green YES + else + pstatus red NO + fi else - pstatus red NO + 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 - #dd if=/dev/cpu/0/msr of=/dev/null bs=1 count=8 skip=73 2>/dev/null - #/bin/echo $? fi if [ "$insmod_msr" = 1 ]; then |