From: Vladimir Zapolskiy <vz@mleia.com>
Date: Fri, 31 Jul 2015 00:09:49 +0000 (+0300)
Subject: ARM: EXYNOS: Fix potentian kfree() of ro memory
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=27bbd23fe8e66edfff4c0e92eb9eb39c37856831;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git

ARM: EXYNOS: Fix potentian kfree() of ro memory

The change fixes a bug introduced by 2be2a3ff42a5, memory allocated
by kstrdup_const() must be always deallocated with kfree_const(),
otherwise there is a risk of kfree'ing ro memory in power domain error
exit path.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Cc: <stable@vger.kernel.org>
Fixes: 2be2a3ff42a5 ("ARM: EXYNOS: register power domain driver from core_initcall")
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
---

diff --git a/arch/arm/mach-exynos/pm_domains.c b/arch/arm/mach-exynos/pm_domains.c
index 6001f1c9d136..5121baae0e6b 100644
--- a/arch/arm/mach-exynos/pm_domains.c
+++ b/arch/arm/mach-exynos/pm_domains.c
@@ -146,7 +146,7 @@ static __init int exynos4_pm_init_power_domain(void)
 		pd->base = of_iomap(np, 0);
 		if (!pd->base) {
 			pr_warn("%s: failed to map memory\n", __func__);
-			kfree(pd->pd.name);
+			kfree_const(pd->pd.name);
 			kfree(pd);
 			of_node_put(np);
 			continue;