From: Aditya Pakki <pakki001@umn.edu>
To: pakki001@umn.edu
Cc: kjlu@umn.edu, Linus Walleij <linus.walleij@linaro.org>,
Chen-Yu Tsai <wens@csie.org>,
linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] pinctrl: axp209: Fix NULL pointer dereference after allocation
Date: Tue, 12 Mar 2019 10:19:10 -0500 [thread overview]
Message-ID: <20190312151911.2207-1-pakki001@umn.edu> (raw)
axp20x_build_funcs_groups allocates groups via devm_kcalloc and tries to
dereference without checking for NULL. This patch avoids such a
scenario.
Signed-off-by: Aditya Pakki <pakki001@umn.edu>
---
drivers/pinctrl/pinctrl-axp209.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/pinctrl/pinctrl-axp209.c b/drivers/pinctrl/pinctrl-axp209.c
index afd0b533c40a..4fcf7262bed9 100644
--- a/drivers/pinctrl/pinctrl-axp209.c
+++ b/drivers/pinctrl/pinctrl-axp209.c
@@ -366,6 +366,8 @@ static int axp20x_build_funcs_groups(struct platform_device *pdev)
pctl->funcs[i].groups = devm_kcalloc(&pdev->dev,
npins, sizeof(char *),
GFP_KERNEL);
+ if (!pctl->funcs[i].groups)
+ return -ENOMEM;
for (pin = 0; pin < npins; pin++)
pctl->funcs[i].groups[pin] = pctl->desc->pins[pin].name;
}
--
2.17.1
next reply other threads:[~2019-03-12 15:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-12 15:19 Aditya Pakki [this message]
2019-03-23 22:09 ` [PATCH] pinctrl: axp209: Fix NULL pointer dereference after allocation Aditya Pakki
2019-04-05 3:36 ` Linus Walleij
-- strict thread matches above, loose matches on Subject: below --
2018-08-06 16:06 Anton Vasilyev
2018-08-08 9:13 ` Chen-Yu Tsai
2018-08-10 21:13 ` Linus Walleij
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