dlm: fixed memory leaks after failed ls_remove_names allocation

If allocation fails on last elements of array need to free already
allocated elements.

v2: just move existing out_rsbtbl label to right place

Fixes 789924ba635f ("dlm: fix race between remove and lookup")
Cc: stable@kernel.org # 3.6
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David Teigland <teigland@redhat.com>

diff --git a/fs/dlm/lockspace.c b/fs/dlm/lockspace.c
index 7b9d47f..3f992ef 100644 (file)
--- a/fs/dlm/lockspace.c
+++ b/fs/dlm/lockspace.c
@@ -680,11 +680,11 @@ static int new_lockspace(const char *name, const char *cluster,
        kfree(ls->ls_recover_buf);
  out_lkbidr:
        idr_destroy(&ls->ls_lkbidr);
+ out_rsbtbl:
        for (i = 0; i < DLM_REMOVE_NAMES_MAX; i++) {
                if (ls->ls_remove_names[i])
                        kfree(ls->ls_remove_names[i]);
        }
- out_rsbtbl:
        vfree(ls->ls_rsbtbl);
  out_lsfree:
        if (do_unreg)