On Tue, May 23, 2017 at 8:40 AM, Thomas Gleixner <[email protected]> wrote: > As of 4.12-rc1 one of my machines triggers the insecure W+X mapping. > > It's consistenly 9 entries close to the beginning of the module space, > before the first actual module starts. See below. > > Any ideas which avoid bisecting would be appreciated.
Is this the same as: https://lkml.org/lkml/2017/5/19/899 ? The location is very similar. -Kees > > Thanks, > > tglx > > ---[ Modules ]--- > 0xffffffffc0000000-0xffffffffc017d000 1524K > pte > 0xffffffffc017d000-0xffffffffc017e000 4K RW GLB > x pte > 0xffffffffc017e000-0xffffffffc017f000 4K > pte > 0xffffffffc017f000-0xffffffffc0180000 4K RW GLB > x pte > 0xffffffffc0180000-0xffffffffc0181000 4K > pte > 0xffffffffc0181000-0xffffffffc0182000 4K RW GLB > x pte > 0xffffffffc0182000-0xffffffffc0183000 4K > pte > 0xffffffffc0183000-0xffffffffc0184000 4K RW GLB > x pte > 0xffffffffc0184000-0xffffffffc0185000 4K > pte > 0xffffffffc0185000-0xffffffffc0186000 4K RW GLB > x pte > 0xffffffffc0186000-0xffffffffc0187000 4K > pte > 0xffffffffc0187000-0xffffffffc0188000 4K RW GLB > x pte > 0xffffffffc0188000-0xffffffffc0189000 4K > pte > 0xffffffffc0189000-0xffffffffc018a000 4K RW GLB > x pte > 0xffffffffc018a000-0xffffffffc018b000 4K > pte > 0xffffffffc018b000-0xffffffffc018c000 4K RW GLB > x pte > 0xffffffffc018c000-0xffffffffc018d000 4K > pte > 0xffffffffc018d000-0xffffffffc018e000 4K RW GLB > x pte > > First module starts here: > > 0xffffffffc018e000-0xffffffffc0191000 12K > pte > 0xffffffffc0191000-0xffffffffc0192000 4K ro GLB > x pte > > ---[ Modules ]--- > 0xffffffffc0000000-0xffffffffc0200000 2M > pmd > 0xffffffffc0200000-0xffffffffc02f8000 992K > pte > 0xffffffffc02f8000-0xffffffffc02f9000 4K RW GLB > x pte > 0xffffffffc02f9000-0xffffffffc02fa000 4K > pte > 0xffffffffc02fa000-0xffffffffc02fb000 4K RW GLB > x pte > 0xffffffffc02fb000-0xffffffffc02fc000 4K > pte > 0xffffffffc02fc000-0xffffffffc02fd000 4K RW GLB > x pte > 0xffffffffc02fd000-0xffffffffc02fe000 4K > pte > 0xffffffffc02fe000-0xffffffffc02ff000 4K RW GLB > x pte > 0xffffffffc02ff000-0xffffffffc0300000 4K > pte > 0xffffffffc0300000-0xffffffffc0301000 4K RW GLB > x pte > 0xffffffffc0301000-0xffffffffc0302000 4K > pte > 0xffffffffc0302000-0xffffffffc0303000 4K RW GLB > x pte > 0xffffffffc0303000-0xffffffffc0304000 4K > pte > 0xffffffffc0304000-0xffffffffc0305000 4K RW GLB > x pte > 0xffffffffc0305000-0xffffffffc0306000 4K > pte > 0xffffffffc0306000-0xffffffffc0307000 4K RW GLB > x pte > 0xffffffffc0307000-0xffffffffc0308000 4K > pte > 0xffffffffc0308000-0xffffffffc0309000 4K RW GLB > x pte > > First module starts here: > > 0xffffffffc0309000-0xffffffffc030c000 12K > pte > 0xffffffffc030c000-0xffffffffc030d000 4K ro GLB > x pte -- Kees Cook Pixel Security
