Showing error 786

User: Jiri Slaby
Error type: Memory Leak
Error type description: There the code omits to free some allocated memory
File location: drivers/uwb/neh.c
Line in file: 391
Project: Linux Kernel
Project version: 2.6.28
Tools: Stanse (1.2)
Entered: 2011-11-07 22:26:27 UTC

Source: 

361 * that calls back this function for every received notification; this
362 * function then will rearm itself).
363 *
364 * Notification data buffers are dynamically allocated by the NEH
365 * handling code in neh.c [uwb_rc_neh_lookup()]. What is actually
366 * allocated is space to contain the notification data.
367 *
368 * Buffers are prefixed with a Radio Control Event Block (RCEB) as
369 * defined by the WUSB Wired-Adapter Radio Control interface. We
370 * just use it for the notification code.
371 *
372 * On each case statement we just transcode endianess of the different
373 * fields. We declare a pointer to a RCI definition of an event, and
374 * then to a UWB definition of the same event (which are the same,
375 * remember). Event if we use different pointers
376 */
377static
378void uwb_rc_notif(struct uwb_rc *rc, struct uwb_rceb *rceb, ssize_t size)
379{
380        struct device *dev = &rc->uwb_dev.dev;
381        struct uwb_event *uwb_evt;
382
383        if (size == -ESHUTDOWN)
384                return;
385        if (size < 0) {
386                dev_err(dev, "ignoring event with error code %zu\n",
387                        size);
388                return;
389        }
390
391        uwb_evt = kzalloc(sizeof(*uwb_evt), GFP_ATOMIC);
392        if (unlikely(uwb_evt == NULL)) {
393                dev_err(dev, "no memory to queue event 0x%02x/%04x/%02x\n",
394                        rceb->bEventType, le16_to_cpu(rceb->wEvent),
395                        rceb->bEventContext);
396                return;
397        }
398        uwb_evt->rc = __uwb_rc_get(rc);        /* will be put by uwbd's uwbd_event_handle() */
399        uwb_evt->ts_jiffies = jiffies;
400        uwb_evt->type = UWB_EVT_TYPE_NOTIF;
401        uwb_evt->notif.size = size;
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