From: "Gustavo A. R. Silva" <garsilva@embeddedor.com>
To: David Woodhouse <dwmw2@infradead.org>,
Brian Norris <computersforpeace@gmail.com>,
Boris Brezillon <boris.brezillon@free-electrons.com>,
Marek Vasut <marek.vasut@gmail.com>,
Richard Weinberger <richard@nod.at>,
Cyrille Pitchen <cyrille.pitchen@wedev4u.fr>
Cc: linux-mtd@lists.infradead.org, linux-kernel@vger.kernel.org,
"Gustavo A. R. Silva" <garsilva@embeddedor.com>
Subject: [PATCH] mtd: spear_smi: add NULL check on devm_kzalloc() return value
Date: Thu, 6 Jul 2017 17:25:50 -0500 [thread overview]
Message-ID: <20170706222550.GA30998@embeddedgus> (raw)
Check return value from call to devm_kzalloc()
in order to prevent a NULL pointer dereference.
This issue was detected using Coccinelle and the following semantic patch:
@@
expression x;
identifier fld;
@@
* x = devm_kzalloc(...);
... when != x == NULL
x->fld
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
---
drivers/mtd/devices/spear_smi.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mtd/devices/spear_smi.c b/drivers/mtd/devices/spear_smi.c
index dd50698..ddf4789 100644
--- a/drivers/mtd/devices/spear_smi.c
+++ b/drivers/mtd/devices/spear_smi.c
@@ -775,6 +775,8 @@ static int spear_smi_probe_config_dt(struct platform_device *pdev,
pdata->board_flash_info = devm_kzalloc(&pdev->dev,
sizeof(*pdata->board_flash_info),
GFP_KERNEL);
+ if (!pdata->board_flash_info)
+ return -ENOMEM;
/* Fill structs for each subnode (flash device) */
while ((pp = of_get_next_child(np, pp))) {
--
2.5.0
next reply other threads:[~2017-07-06 22:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-06 22:25 Gustavo A. R. Silva [this message]
2017-07-17 20:49 ` [PATCH] mtd: spear_smi: add NULL check on devm_kzalloc() return value Boris Brezillon
2017-08-17 12:57 ` Boris Brezillon
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