From: Derrick Brashear <shadow@dementia.org>
Date: Wed, 10 Jul 2002 21:02:49 +0000 (+0000)
Subject: STABLE12-linux-newvcache-make-sure-we-dont-try-to-iterate-null-pointer-20020615
X-Git-Tag: openafs-stable-1_2_6~47
X-Git-Url: https://git.michaelhowe.org/gitweb/?a=commitdiff_plain;h=cb841dd871d0d0937046c5b4bd75d0533da62201;p=packages%2Fo%2Fopenafs.git

STABLE12-linux-newvcache-make-sure-we-dont-try-to-iterate-null-pointer-20020615


based on report from wilder@us.ibm.com
not clear this is sufficient


(cherry picked from commit 307543629ddeb4b4f34ff5947038fd6a224547b5)
---

diff --git a/src/afs/afs_vcache.c b/src/afs/afs_vcache.c
index 0ff7f54cb..45c538ff9 100644
--- a/src/afs/afs_vcache.c
+++ b/src/afs/afs_vcache.c
@@ -495,7 +495,7 @@ restart:
 	repeat:
 	    next = this_parent->d_subdirs.next;
 	resume:
-	    while (next != &this_parent->d_subdirs) {
+	    while (next && next != &this_parent->d_subdirs) {
 		struct list_head *tmp = next;
 		struct dentry *dchld = list_entry(tmp, struct dentry, d_child);