linux-kernel - [PATCH] powerpc/sysdev/of_rtc: Fix possible memory leak in of_instantiate

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Date:   Tue, 2 Nov 2021 21:47:17 -0400
From:   He Ying <heying24@...wei.com>
To:     <mpe@...erman.id.au>, <benh@...nel.crashing.org>,
        <paulus@...ba.org>
CC:     <linuxppc-dev@...ts.ozlabs.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH] powerpc/sysdev/of_rtc: Fix possible memory leak in of_instantiate_rtc

If of_address_to_resource() in of_instantiate_rtc() fails, previously
allocated memory res is not freed. Add missing kfree() for it.

Signed-off-by: He Ying <heying24@...wei.com>
---
 arch/powerpc/sysdev/of_rtc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/sysdev/of_rtc.c b/arch/powerpc/sysdev/of_rtc.c
index 1f408d34a6a7..23b896996c2f 100644
--- a/arch/powerpc/sysdev/of_rtc.c
+++ b/arch/powerpc/sysdev/of_rtc.c
@@ -44,6 +44,7 @@ void __init of_instantiate_rtc(void)
 				printk(KERN_ERR "OF RTC: Error "
 				       "translating resources for %pOF\n",
 				       node);
+				kfree(res);
 				continue;
 			}
 
-- 
2.17.1