From: Sherry Sun <sherry.sun@nxp.com>
To: gregkh@linuxfoundation.org, jirislaby@kernel.org
Cc: linux-serial@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-imx@nxp.com
Subject: [PATCH 2/2] tty: serial: fsl_lpuart: fix the potential bug of dereference null return value
Date: Mon, 26 Apr 2021 15:49:35 +0800 [thread overview]
Message-ID: <20210426074935.11131-3-sherry.sun@nxp.com> (raw)
In-Reply-To: <20210426074935.11131-1-sherry.sun@nxp.com>
This issue is reported by Coverity Check.
In lpuart_probe, return value of function which returns null is
dereferenced without checking.
Signed-off-by: Sherry Sun <sherry.sun@nxp.com>
---
drivers/tty/serial/fsl_lpuart.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 777d54b593f8..c95e71fd2ca0 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -2589,6 +2589,9 @@ static int lpuart_probe(struct platform_device *pdev)
struct resource *res;
int ret;
+ if (!sdata)
+ return -ENODEV;
+
sport = devm_kzalloc(&pdev->dev, sizeof(*sport), GFP_KERNEL);
if (!sport)
return -ENOMEM;
--
2.17.1
next prev parent reply other threads:[~2021-04-26 7:57 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-26 7:49 [PATCH 0/2] Fix two coverity issues in fsl_lpuart.c Sherry Sun
2021-04-26 7:49 ` [PATCH 1/2] tty: serial: fsl_lpuart: fix the potential bug of division or modulo by zero Sherry Sun
2021-04-26 8:08 ` Greg KH
2021-04-26 11:30 ` Sherry Sun
2021-04-26 11:34 ` Greg KH
2021-04-26 11:51 ` Sherry Sun
2021-04-26 12:23 ` Greg KH
2021-04-26 12:50 ` Sherry Sun
2021-04-26 7:49 ` Sherry Sun [this message]
2021-04-26 8:09 ` [PATCH 2/2] tty: serial: fsl_lpuart: fix the potential bug of dereference null return value Greg KH
2021-04-26 11:39 ` Sherry Sun
2021-04-26 11:57 ` Fabio Estevam
2021-04-26 12:09 ` Sherry Sun
2021-04-26 12:15 ` Fabio Estevam
2021-04-26 12:48 ` Sherry Sun
2021-04-26 12:22 ` Greg KH
2021-04-26 12:46 ` Sherry Sun
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