After 24 hours of use, still no slub.c error message in dmesg.
$ dmesg | grep -i slub [ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] Linux version 3.18.0-13-generic (root@gloin) (gcc version 4.9.2 (Ubuntu 4.9.2-10ubuntu5) ) #14 SMP Tue Feb 17 11:13:29 UTC 2015 (Ubuntu 3.18.0-13.14~lp1418286v1-generic 3.18.5)
After 24 hours of use, still no slub.c error message in dmesg.
$ dmesg | grep -i slub
[ 0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
[ 0.000000] Linux version 3.18.0-13-generic (root@gloin) (gcc version 4.9.2 (Ubuntu 4.9.2-10ubuntu5) ) #14 SMP Tue Feb 17 11:13:29 UTC 2015 (Ubuntu 3.18.0- 13.14~lp1418286 v1-generic 3.18.5)