slub debug

[root@f24m ~]# grep SLUB_DEBUG /boot/config-4.8.0-0.rc1.git0.1.fc25.x86_64 CONFIG_SLUB_DEBUG=y # CONFIG_SLUB_DEBUG_ON is not set When I boot with slub_debug=1, I get this at boot time: [ 0.000000] slub_debug option '1' unknown. skipped https://fedoraproject.org/wiki/KernelDebugStrategy says under Release section: In addition, SLUB_DEBUG is enabled, but by default is inactive. You need to boot with slub_debug=1 to make it perform its usual checks. https://www.kernel.org/doc/Documentation/vm/slub.txt suggests multiple possible options, but I'm not sure which one(s) make it boot functionally like a debug kernel. -- Chris Murphy