Initialize local before any call to STACK_WIND to prevent a crash

Signed-off-by: Anand V. Avati <avati@dev.gluster.com>

BUG: 304 (Write behind crashes when a chmod is issued)
URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=304

1 files changed, 10 insertions, 9 deletions

diff --git a/xlators/performance/write-behind/src/write-behind.c b/xlators/performance/write-behind/src/write-behind.c
index 0d449b4ac1e..47ed2ecf4aa 100644
--- a/xlators/performance/write-behind/src/write-behind.c
+++ b/xlators/performance/write-behind/src/write-behind.c
@@ -1124,6 +1124,16 @@ wb_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
         wb_request_t *request = NULL;
         int32_t       ret = -1, op_errno = EINVAL;
 
+        local = CALLOC (1, sizeof (*local));
+        if (local == NULL) {
+                op_errno = ENOMEM;
+                goto unwind;
+        }
+
+        local->file = file;
+
+        frame->local = local;
+
         if (!(valid & (GF_SET_ATTR_ATIME | GF_SET_ATTR_MTIME))) {
                 STACK_WIND (frame,
                             wb_setattr_cbk,
@@ -1149,15 +1159,6 @@ wb_setattr (call_frame_t *frame, xlator_t *this, loc_t *loc,
 
         }
 
-        local = CALLOC (1, sizeof (*local));
-        if (local == NULL) {
-                op_errno = ENOMEM;
-                goto unwind;
-        }
-
-        local->file = file;
-
-        frame->local = local;
 
         if (file) {
                 stub = fop_setattr_stub (frame, wb_setattr_helper, loc, stbuf, valid);