dprevot/evocheck
1
0
Fork 0
forked from evolix/evocheck
Code Issues Pull requests Projects Releases Wiki Activity

Add IS_MELTDOWN

Browse source 
We check kaiser flags in /proc/cpuinfo and CONFIG_PAGE_TABLE_ISOLATION in
kernel config file.
This commit is contained in:
Benoît.S 2018-01-11 11:24:42 +01:00
parent c993244885
commit 2c6d075e2a
1 changed files with 13 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

13
evocheck.sh
View file

@ -97,6 +97,7 @@ IS_REDIS_BACKUP=1
IS_ELASTIC_BACKUP=1
IS_MONGO_BACKUP=1
IS_MOUNT_FSTAB=1
IS_MELTDOWN=1
#Proper to OpenBSD
IS_SOFTDEP=1
@ -704,6 +705,18 @@ if [ -e /etc/debian_version ]; then
&& test -f /etc/squid/evolinux-custom.conf) || echo 'IS_SQUIDEVOLINUXCONF FAILED!'
fi
fi
if [ "$IS_MELTDOWN" = 1 ]; then
if grep -q BOOT_IMAGE= /proc/cmdline; then
# We check if the current running kernel has CONFIG_PAGE_TABLE_ISOLATION enabled
kernelPath=$(grep -Eo 'BOOT_IMAGE=[^ ]+' /proc/cmdline | cut -d= -f2)
kernelVer=${kernelPath##*/vmlinuz-}
kernelConfig="config-${kernelVer}"
grep -Eq '^(CONFIG_PAGE_TABLE_ISOLATION|CONFIG_KAISER)=y' /boot/$kernelConfig || echo 'IS_MELTDOWN FAILED!'
fi
# We check if the running kernel has kaiser loaded
grep -Eq '^flags\s+:\s+.+(kaiser).+' /proc/cpuinfo || echo 'IS_MELTDOWN FAILED!'
fi
fi