From: Navid Emamdoost <navid.emamdoost@gmail.com>
To: unlisted-recipients:; (no To-header on input)
Cc: emamd001@umn.edu, smccaman@umn.edu, kjlu@umn.edu,
Navid Emamdoost <navid.emamdoost@gmail.com>,
Jaroslav Kysela <perex@perex.cz>, Takashi Iwai <tiwai@suse.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Richard Fontana <rfontana@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
alsa-devel@alsa-project.org, linux-kernel@vger.kernel.org
Subject: [PATCH] ALSA: pci: Fix memory leak in snd_korg1212_create
Date: Sun, 27 Oct 2019 14:12:04 -0500 [thread overview]
Message-ID: <20191027191206.30820-1-navid.emamdoost@gmail.com> (raw)
In the implementation of snd_korg1212_create() the allocated memory for
korg1212 is leaked in cases of error. Release korg1212 via
snd_korg1212_free() if either of these calls fail:
snd_korg1212_downloadDSPCode(), snd_pcm_new(), or snd_ctl_add().
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
---
sound/pci/korg1212/korg1212.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/sound/pci/korg1212/korg1212.c b/sound/pci/korg1212/korg1212.c
index 0d81eac0a478..e976e857d915 100644
--- a/sound/pci/korg1212/korg1212.c
+++ b/sound/pci/korg1212/korg1212.c
@@ -2367,8 +2367,10 @@ static int snd_korg1212_create(struct snd_card *card, struct pci_dev *pci,
mdelay(CARD_BOOT_DELAY_IN_MS);
- if (snd_korg1212_downloadDSPCode(korg1212))
+ if (snd_korg1212_downloadDSPCode(korg1212)) {
+ snd_korg1212_free(korg1212);
return -EBUSY;
+ }
K1212_DEBUG_PRINTK("korg1212: dspMemPhy = %08x U[%08x], "
"PlayDataPhy = %08x L[%08x]\n"
@@ -2383,8 +2385,11 @@ static int snd_korg1212_create(struct snd_card *card, struct pci_dev *pci,
korg1212->RoutingTablePhy, LowerWordSwap(korg1212->RoutingTablePhy),
korg1212->AdatTimeCodePhy, LowerWordSwap(korg1212->AdatTimeCodePhy));
- if ((err = snd_pcm_new(korg1212->card, "korg1212", 0, 1, 1, &korg1212->pcm)) < 0)
+ err = snd_pcm_new(korg1212->card, "korg1212", 0, 1, 1, &korg1212->pcm);
+ if (err < 0) {
+ snd_korg1212_free(korg1212);
return err;
+ }
korg1212->pcm->private_data = korg1212;
korg1212->pcm->private_free = snd_korg1212_free_pcm;
@@ -2398,8 +2403,10 @@ static int snd_korg1212_create(struct snd_card *card, struct pci_dev *pci,
for (i = 0; i < ARRAY_SIZE(snd_korg1212_controls); i++) {
err = snd_ctl_add(korg1212->card, snd_ctl_new1(&snd_korg1212_controls[i], korg1212));
- if (err < 0)
+ if (err < 0) {
+ snd_korg1212_free(korg1212);
return err;
+ }
}
snd_korg1212_proc_init(korg1212);
--
2.17.1
next reply other threads:[~2019-10-27 19:12 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-27 19:12 Navid Emamdoost [this message]
2019-10-27 20:40 ` [PATCH] ALSA: pci: Fix memory leak in snd_korg1212_create Markus Elfring
2019-10-28 8:19 ` Markus Elfring
2019-10-28 6:31 ` [PATCH] " Takashi Iwai
2019-10-28 9:00 ` [alsa-devel] ALSA: korg1212: Checking exception handling in snd_korg1212_create() Markus Elfring
2019-10-28 13:15 ` Takashi Iwai
2019-10-28 14:40 ` Markus Elfring
2019-10-28 14:44 ` Takashi Iwai
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