Commit 44d5759d authored Aug 11, 2008 by Denis V. Lunev Committed by Trond Myklebust Oct 07, 2008

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 <den@openvz.org>
CC: Trond Myklebust <Trond.Myklebust@netapp.com>
CC: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

parent c9f6cde6

fs/nfs/namespace.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -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);

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