On Wed, Sep 21, 2016 at 03:25:04PM -0700, Laura Abbott wrote: > > virt_addr_valid is supposed to return true if and only if virt_to_page > returns a valid page structure. The current macro does math on whatever > address is given and passes that to pfn_valid to verify. vmalloc and > module addresses can happen to generate a pfn that 'happens' to be > valid. Fix this by only performing the pfn_valid check on addresses that > have the potential to be valid. > > Acked-by: Mark Rutland <mark.rutl...@arm.com> > Signed-off-by: Laura Abbott <labb...@redhat.com> > --- > v2: Properly parenthesize macro arguments. Re-factor to common macro. > > Also in case it wasn't clear, there's no need to try and squeeze this > into 4.8. Hardened usercopy should have all the checks, this is just for > full correctness.
Thanks, I'll push this onto for-next/core later today. Will