From: Yang Yingliang <yangyingliang@huawei.com>
To: <linux-kernel@vger.kernel.org>, <alsa-devel@alsa-project.org>
Cc: tiwai@suse.com
Subject: [PATCH -next] ALSA: n64: check return value after calling platform_get_resource()
Date: Thu, 10 Jun 2021 20:49:58 +0800 [thread overview]
Message-ID: <20210610124958.116142-1-yangyingliang@huawei.com> (raw)
It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
sound/mips/snd-n64.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/sound/mips/snd-n64.c b/sound/mips/snd-n64.c
index e35e93157755..463a6fe589eb 100644
--- a/sound/mips/snd-n64.c
+++ b/sound/mips/snd-n64.c
@@ -338,6 +338,10 @@ static int __init n64audio_probe(struct platform_device *pdev)
strcpy(card->longname, "N64 Audio");
res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
+ if (!res) {
+ err = -EINVAL;
+ goto fail_dma_alloc;
+ }
if (devm_request_irq(&pdev->dev, res->start, n64audio_isr,
IRQF_SHARED, "N64 Audio", priv)) {
err = -EBUSY;
--
2.25.1
next reply other threads:[~2021-06-10 12:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-10 12:49 Yang Yingliang [this message]
2021-06-12 7:31 ` [PATCH -next] ALSA: n64: check return value after calling platform_get_resource() Takashi Iwai
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