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

diff --git a/src/afs/afs_vcache.c b/src/afs/afs_vcache.c
index ea2bc8b..c97e9a9 100644 (file)
--- a/src/afs/afs_vcache.c
+++ b/src/afs/afs_vcache.c
@@ -491,7 +491,7 @@ 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);