From 5c7f856f7163818a60f21c26683c1717ca48307a Mon Sep 17 00:00:00 2001
From: Jeff Layton <jlayton@redhat.com>
Date: Thu, 20 Dec 2012 17:08:32 -0500
Subject: [PATCH] --- yaml --- r: 347854 b: refs/heads/master c:
 2771261ec5b677a38f0cd5fcfc6cefd5393787ef h: refs/heads/master v: v3

---
 [refs]          | 2 +-
 trunk/fs/open.c | 9 +++++++--
 2 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index d2064e57e0cd..ed0ef469d074 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 0291c0a551d5b0856627f2cb294da05f122414a0
+refs/heads/master: 2771261ec5b677a38f0cd5fcfc6cefd5393787ef
diff --git a/trunk/fs/open.c b/trunk/fs/open.c
index 402dfcb6720b..a13a54d3e691 100644
--- a/trunk/fs/open.c
+++ b/trunk/fs/open.c
@@ -445,8 +445,9 @@ SYSCALL_DEFINE1(chroot, const char __user *, filename)
 {
 	struct path path;
 	int error;
-
-	error = user_path_dir(filename, &path);
+	unsigned int lookup_flags = LOOKUP_FOLLOW | LOOKUP_DIRECTORY;
+retry:
+	error = user_path_at(AT_FDCWD, filename, lookup_flags, &path);
 	if (error)
 		goto out;
 
@@ -465,6 +466,10 @@ SYSCALL_DEFINE1(chroot, const char __user *, filename)
 	error = 0;
 dput_and_out:
 	path_put(&path);
+	if (retry_estale(error, lookup_flags)) {
+		lookup_flags |= LOOKUP_REVAL;
+		goto retry;
+	}
 out:
 	return error;
 }