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Commit b0637ee0 authored by Meng Wang's avatar Meng Wang
Browse files

ALSA: timer: check if timer->card is null before using it 



NULL check timer->card before use to prevent dereferencing
a NULL pointer.

CRs-Fixed: 1046606
Change-Id: I8e359864508cc2307d9e9619f36c7c08cc3842f9
Signed-off-by: default avatarMeng Wang <mwang@codeaurora.org>
parent 7c8a2f0c

sound/core/timer.c

+5 −1
Original line number Diff line number Diff line
@@ -1125,7 +1125,11 @@ static void snd_timer_proc_read(struct snd_info_entry *entry, 


	mutex_lock(&register_mutex);

	list_for_each_entry(timer, &snd_timer_list, device_list) {

		if (timer->card && timer->card->shutdown)

		if (timer->card == NULL) {

			pr_debug("%s: timer->card is NULL\n", __func__);

			continue;

		}

		if (timer->card->shutdown)

			continue;

		switch (timer->tmr_class) {

		case SNDRV_TIMER_CLASS_GLOBAL: