Hi Kirill, On Mon, Mar 13, 2017 at 6:22 AM, Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> wrote: > gup_p4d_range() should call gup_pud_range(), not itself. > > Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx> > Reported-by: Chris Packham <chris.packham@xxxxxxxxxxxxxxxxxxx> > Fixes: c2febafc6773 ("mm: convert generic code to 5-level paging") FTR, this (now commit ce70df089143c493) fixes the strange crashes I saw with plain v4.11-rc2 and renesas-devel-20170313-v4.11-rc2 during shutdown on Renesas R-Car Gen2 (arm) and R-Car Gen3 (arm64) (but not on older SH/R-Mobile), and that I bisected to commit c2febafc6773. Tested-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds