On Thu, Apr 14, 2022 at 3:28 AM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote: > > On Wed, 13 Apr 2022 20:29:25 +0800 Patrick Wang <patrick.wang.shcn@xxxxxxxxx> wrote: > > > The kmemleak_*_phys() apis do not check the address for lowmem's min > > boundary, while the caller may pass an address below lowmem, which > > will trigger an oops: > > Do you believe this fix should be backported into -stable kernels? Yes, I think so. The callers may not quite know the actual address they pass(e.g. from devicetree). So the kmemleak_*_phys() apis should guarantee the address they finally use is in lowmem range.
