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Date: Sun, 2 Sep 2018 13:03:07 +0000 From: Sasha Levin <Alexander.Levin@...rosoft.com> To: "stable@...r.kernel.org" <stable@...r.kernel.org>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org> CC: YueHaibing <yuehaibing@...wei.com>, Linus Walleij <linus.walleij@...aro.org>, Sasha Levin <Alexander.Levin@...rosoft.com> Subject: [PATCH AUTOSEL 4.18 008/131] pinctrl: berlin: fix 'pctrl->functions' allocation in berlin_pinctrl_build_state From: YueHaibing <yuehaibing@...wei.com> [ Upstream commit b5031b7db77dc47f474f0efc2b2552c32b7bb59d ] fixes following Smatch static check warning: drivers/pinctrl/berlin/berlin.c:237 berlin_pinctrl_build_state() warn: passing devm_ allocated variable to kfree. 'pctrl->functions' As we will be calling krealloc() on pointer 'pctrl->functions', which means kfree() will be called in there, devm_kzalloc() shouldn't be used with the allocation in the first place. Fix the warning by calling kcalloc() and managing the free procedure in error path on our own. Fixes: 3de68d331c24 ("pinctrl: berlin: add the core pinctrl driver for Marvell Berlin SoCs") Signed-off-by: YueHaibing <yuehaibing@...wei.com> Reviewed-by: Jisheng Zhang <Jisheng.Zhang@...aptics.com> Signed-off-by: Linus Walleij <linus.walleij@...aro.org> Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com> --- drivers/pinctrl/berlin/berlin.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/drivers/pinctrl/berlin/berlin.c b/drivers/pinctrl/berlin/berlin.c index d6d183e9db17..b5903fffb3d0 100644 --- a/drivers/pinctrl/berlin/berlin.c +++ b/drivers/pinctrl/berlin/berlin.c @@ -216,10 +216,8 @@ static int berlin_pinctrl_build_state(struct platform_device *pdev) } /* we will reallocate later */ - pctrl->functions = devm_kcalloc(&pdev->dev, - max_functions, - sizeof(*pctrl->functions), - GFP_KERNEL); + pctrl->functions = kcalloc(max_functions, + sizeof(*pctrl->functions), GFP_KERNEL); if (!pctrl->functions) return -ENOMEM; @@ -257,8 +255,10 @@ static int berlin_pinctrl_build_state(struct platform_device *pdev) function++; } - if (!found) + if (!found) { + kfree(pctrl->functions); return -EINVAL; + } if (!function->groups) { function->groups = @@ -267,8 +267,10 @@ static int berlin_pinctrl_build_state(struct platform_device *pdev) sizeof(char *), GFP_KERNEL); - if (!function->groups) + if (!function->groups) { + kfree(pctrl->functions); return -ENOMEM; + } } groups = function->groups; -- 2.17.1
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