* Ken'ichi Ohmichi <oomichi at mxs.nes.nec.co.jp> wrote: > > Hi, > > Since linux-2.6.27, kdump has failed on i386 sparsemem kernel. > 1st-kernel gets a panic just before switching to 2nd-kernel. > > The cause is that a kernel accesses invalid mem_section by > page_to_pfn(image->swap_page) at machine_kexec(). > image->swap_page is allocated if kexec for hibernation, but > it is not allocated if kdump. So if kdump, a kernel should > not access the mem_section corresponding to image->swap_page. > The attached patch fixes this invalid access. applied to tip/x86/urgent, thanks! Ingo
