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-rw-r--r--fs/open.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/open.c b/fs/open.c
index 402dfcb6720b..a13a54d3e691 100644
--- a/fs/open.c
+++ b/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;
}