dlm: fix dlm_dir_lookup() handling of too long names
... those can happen and BUG() from DLM_ASSERT() in allocate_direntry() is
not a good way to handle them.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Teigland <teigland@redhat.com>
diff --git a/fs/dlm/dir.c b/fs/dlm/dir.c
index 831050e..85defeb 100644
--- a/fs/dlm/dir.c
+++ b/fs/dlm/dir.c
@@ -319,6 +319,9 @@
write_unlock(&ls->ls_dirtbl[bucket].lock);
+ if (namelen > DLM_RESNAME_MAXLEN)
+ return -EINVAL;
+
de = kzalloc(sizeof(struct dlm_direntry) + namelen, GFP_KERNEL);
if (!de)
return -ENOMEM;