On Wed, Oct 9, 2013 at 12:12 PM, Eric W. Biederman <ebiederm@xxxxxxxxxxxx> wrote: > ebiederm@xxxxxxxxxxxx (Eric W. Biederman) writes: > >> But I will go through and read the old fusermount code before I get too >> much farther just so I understand what I am potentially breaking. > > Grr. > > So I have just read the fusermount umount code and the hack that it uses > before there was UMOUNT_NOFOLLOW support in the vm. > > If I walk this path of lazy unmounts and detaching directories, anyone > with a new kernel and an old copy of fusermount and a nfs mounted home > directory will be able to exploit the fusermount umount symlink race. > > Unless we can declare that old fusermount binaries are buggy beyond > supporting this patchset as it exists is dead. What's the hack that it does? --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
