Hi Christoph, This commit crashes the kernel w/o any dmesg output (the attached one is created by the script as a summary for that run). This is very reproducible in kvm for the attached config. commit 3b0efdfa1e719303536c04d9abca43abeb40f80a Author: Christoph Lameter Date: Wed Jun 13 10:24:57 2012 -0500 mm, sl[aou]b: Extract common fields from struct kmem_cache Thanks, Fengguang