> On Wed, May 12, 2010 at 12:54:27PM -0700, Andrew Morton wrote: > > On Wed, 12 May 2010 09:23:44 +0900 (JST) > > KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx> wrote: > > > > > > diff --git a/fs/exec.c b/fs/exec.c > > > > index 725d7ef..13f8e7f 100644 > > > > --- a/fs/exec.c > > > > +++ b/fs/exec.c > > > > @@ -242,9 +242,10 @@ static int __bprm_mm_init(struct linux_binprm *bprm) > > > > * use STACK_TOP because that can depend on attributes which aren't > > > > * configured yet. > > > > */ > > > > + BUG_ON(VM_STACK_FLAGS & VM_STACK_INCOMPLETE_SETUP); > > > > > > Can we use BUILD_BUG_ON()? > > > > That's vastly preferable - I made that change. > > I will be surprised if it works. On x86, that is > > #define VM_STACK_FLAGS (VM_GROWSDOWN | VM_STACK_DEFAULT_FLAGS | VM_ACCOUNT) > #define VM_STACK_DEFAULT_FLAGS VM_DATA_DEFAULT_FLAGS > #define VM_DATA_DEFAULT_FLAGS \ > (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ > VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) > > so VM_STACK_FLAGS is depending on the value of current->personality > which we don't know at build time. Argh, yes right you are. sorry for the noise. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxxx For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>