On Wed, Feb 25, 2015 at 12:54:54AM +0200, Aaro Koskinen wrote: > Hi, > > Here's a kernel config to reproduce the issue (no special steps needed, > just boot to userspace), and bootlog after that: > > # > # Automatically generated file; DO NOT EDIT. > # Linux/parisc 4.0.0-rc1 Kernel Configuration ... > [ 18.940000] BUG: non-zero nr_pmds on freeing mm: -6 It happens due missing __PAGETABLE_PMD_FOLDED in custom page table folding. This has been fixed in CONFIG_PGTABLE_LEVELS patcheset. Andrew, are you going to submit that patchset to Linus in this cycle? If not, I can prepare a patchset which only adds missing __PAGETABLE_PUD_FOLDED and __PAGETABLE_PMD_FOLDED. -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>