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Subject: [Bug 223348] Inode number for directories change to inode number of
 directory two levels up causing hierarchy loop
Date: Wed, 01 Nov 2017 07:59:16 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D223348

--- Comment #4 from Mateusz Guzik <mjg@FreeBSD.org> ---
wow, that's a fucking retarded bug if i ever seen one. sorry for the
inconvenience.

So to be clear, does this solve the problem for you?

diff --git a/sys/kern/vfs_cache.c b/sys/kern/vfs_cache.c
index 3da1c97..23c80a9 100644
--- a/sys/kern/vfs_cache.c
+++ b/sys/kern/vfs_cache.c
@@ -1126,7 +1126,8 @@ cache_lookup_nomakeentry(struct vnode *dvp, struct vn=
ode
**vpp,
        uint32_t hash;
        int error;

-       if (cnp->cn_namelen =3D=3D 2 && cnp->cn_nameptr[1] =3D=3D '.') {
+       if (cnp->cn_namelen =3D=3D 2 &&
+           cnp->cn_nameptr[0] =3D=3D '.' && cnp->cn_nameptr[1] =3D=3D '.')=
 {
                counter_u64_add(dotdothits, 1);
                dvlp =3D VP2VNODELOCK(dvp);
                dvlp2 =3D NULL;

--=20
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