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fix(variant2): correctly detect IBRS/IBPB in SLES kernels

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This commit is contained in:
Stéphane Lesimple 2018-05-22 12:06:46 +02:00
commit ca391cbfc9
1 changed files with 2 additions and 2 deletions
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spectre-meltdown-checker.sh
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@ -2102,7 +2102,7 @@ check_variant2_linux()
fi
if [ -e "/sys/devices/system/cpu/vulnerabilities/spectre_v2" ]; then
# when IBPB is enabled on 4.15+, we can see it in sysfs
if grep -q ', IBPB' "/sys/devices/system/cpu/vulnerabilities/spectre_v2"; then
if grep -q 'IBPB' "/sys/devices/system/cpu/vulnerabilities/spectre_v2"; then
_debug "ibpb: found enabled in sysfs"
[ -z "$ibpb_supported" ] && ibpb_supported='IBPB found enabled in sysfs'
[ -z "$ibpb_enabled" ] && ibpb_enabled=1
@ -2114,7 +2114,7 @@ check_variant2_linux()
ibrs_fw_enabled=1
fi
# when IBRS is enabled on 4.15+, we can see it in sysfs
if grep -q 'Indirect Branch Restricted Speculation' "/sys/devices/system/cpu/vulnerabilities/spectre_v2"; then
if grep -q -e 'IBRS' -e 'Indirect Branch Restricted Speculation' "/sys/devices/system/cpu/vulnerabilities/spectre_v2"; then
_debug "ibrs: found IBRS in sysfs"
[ -z "$ibrs_supported" ] && ibrs_supported='found IBRS in sysfs'
[ -z "$ibrs_enabled" ] && ibrs_enabled=3