From 44d5759d3fdad660f000ef319f0ec33a6ac6ae28 Mon Sep 17 00:00:00 2001 From: "Denis V. Lunev" Date: Mon, 11 Aug 2008 12:02:34 +0400 Subject: [PATCH] nfs: BUG_ON in nfs_follow_mountpoint Unfortunately, BUG_ON(IS_ROOT(dentry)) can happen inside nfs_follow_mountpoint with NFS running Fedora 8 using a specific setup. https://bugzilla.redhat.com/show_bug.cgi?id=458622 So, the situation should be handled on NFS client gracefully. Signed-off-by: Denis V. Lunev CC: Trond Myklebust CC: J. Bruce Fields Signed-off-by: Trond Myklebust --- fs/nfs/namespace.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c index d398775a3af5..64a288ee046d 100644 --- a/fs/nfs/namespace.c +++ b/fs/nfs/namespace.c @@ -105,7 +105,10 @@ static void * nfs_follow_mountpoint(struct dentry *dentry, struct nameidata *nd) dprintk("--> nfs_follow_mountpoint()\n"); - BUG_ON(IS_ROOT(dentry)); + err = -ESTALE; + if (IS_ROOT(dentry)) + goto out_err; + dprintk("%s: enter\n", __func__); dput(nd->path.dentry); nd->path.dentry = dget(dentry); -- 2.20.1