On 21/04/14 15:26, Oleg Nesterov wrote:
get_user_pages(mm) is simply wrong if mm-mm_users == 0 and exit_mmap/etc
was already called (or is in progress), mm-mm_count can only pin mm-pgd
and mm_struct itself.
Change kvm_setup_async_pf/async_pf_execute to inc/dec mm-mm_users.
get_user_pages(mm) is simply wrong if mm-mm_users == 0 and exit_mmap/etc
was already called (or is in progress), mm-mm_count can only pin mm-pgd
and mm_struct itself.
Change kvm_setup_async_pf/async_pf_execute to inc/dec mm-mm_users.
kvm_create_vm/kvm_destroy_vm play with -mm_count too but this
