On 2022/9/24 8:05, Andrew Morton wrote: > On Fri, 23 Sep 2022 12:21:13 +0800 Liu Shixin <liushixin2@xxxxxxxxxx> wrote: > >> The vma_lock and hugetlb_fault_mutex are dropped before handling >> userfault and reacquire them again after handle_userfault(), but >> reacquire the vma_lock could lead to UAF[1,2] due to the following >> race, ... > Patch is against mm-unstable, which isn't appropriate for a backport. > Could you please something against current -linus (which will be more > backportable), then I'll figure out the fallout on mm-unstable. > > Thanks. > . I resend v4 rebased on current -linus. Link: https://lore.kernel.org/all/20220924034905.2694686-1-liushixin2@xxxxxxxxxx/ Thanks,
