Re: [uml-user] linux-v3.9-rc3: BUG: Bad page map in process trinity-child6 pte:002f9045 pmd:29e421e1

2013-03-26 Thread Hugh Dickins
On Tue, 26 Mar 2013, Toralf Foerster wrote: > On 03/25/2013 11:53 PM, Andrew Morton wrote: > > On Fri, 22 Mar 2013 18:28:36 +0100 Toralf Foerster > > wrote: > > > >> > Using trinity I often trigger under a user mode linux image with host > >> > kernel 3.8.4 > >> > and guest kernel linux-v3.9-rc

Re: [uml-user] [PATCH] arch: um: kernel: skas: mmu: remove pmd_free() and pud_free() for failure processing in init_stub_pte()

2013-11-13 Thread Hugh Dickins
On Wed, 13 Nov 2013, Chen Gang wrote: > Unfortunately, p?d_alloc() and p?d_free() are not pair!! If p?d_alloc() > succeed, they may be used, so in the next failure, we have to skip them > to let exit_mmap() or do_munmap() to process it. > > According to "Documentation/vm/locking", 'mm->page_table