Messages in this thread | | | Date | Thu, 21 Dec 2006 22:04:53 +0100 (MET) | From | Jan Engelhardt <> | Subject | Re: fuse, get_user_pages, flush_anon_page, aliasing caches and all that again |
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On Dec 21 2006 18:51, Miklos Szeredi wrote: > >The root of the problem is that copy_to_user() may cause page faults >on the userspace buffer, and the page fault might (in case of a >maliciously crafted filesystem) recurse into the filesystem itself.
Would it be worthwhile to mlock the page? I know that needs root privs or some capability, but a static buffer could be put aside when fusermount is run.
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