usercopy: remove page-spanning test for now
A custom allocator without __GFP_COMP that copies to userspace has been found in vmw_execbuf_process[1], so this disables the page-span checker by placing it behind a CONFIG for future work where such things can be tracked down later. [1] https://bugzilla.redhat.com/show_bug.cgi?id=1373326 Reported-by:Vinson Lee <vlee@freedesktop.org> Fixes: f5509cc1 ("mm: Hardened usercopy") Signed-off-by:
Kees Cook <keescook@chromium.org>
parent
a85d6b82
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