The branch main has been updated by mjg:
URL:
https://cgit.FreeBSD.org/src/commit/?id=1239a722214c245e642733fdea2b1348101598af
commit 1239a722214c245e642733fdea2b1348101598af
Author: Mateusz Guzik <m...@freebsd.org>
AuthorDate: 2021-02-27 22:23:23 +0000
Commit: Mateusz Guzik <m...@freebsd.org>
CommitDate: 2021-02-27 22:29:50 +0000
cache: temporarily drop the assert that dvp != vp when adding an entry
Historically it was allowed for any names, but arguably should never be
even attempted. Allow it again since there is a release pending and
allowing it is bug-compatible with previous behavior.
Reported by: otis
---
sys/kern/vfs_cache.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/sys/kern/vfs_cache.c b/sys/kern/vfs_cache.c
index fef1e31d197b..8cae0260cbf0 100644
--- a/sys/kern/vfs_cache.c
+++ b/sys/kern/vfs_cache.c
@@ -2266,7 +2266,12 @@ cache_enter_time(struct vnode *dvp, struct vnode *vp,
struct componentname *cnp,
KASSERT(cnp->cn_namelen <= NAME_MAX,
("%s: passed len %ld exceeds NAME_MAX (%d)", __func__,
cnp->cn_namelen,
NAME_MAX));
+#ifdef notyet
+ /*
+ * Not everything doing this is weeded out yet.
+ */
VNPASS(dvp != vp, dvp);
+#endif
VNPASS(!VN_IS_DOOMED(dvp), dvp);
VNPASS(dvp->v_type != VNON, dvp);
if (vp != NULL) {
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