linux-kernel - [PATCH] clk: visconti: Fix memory leak in visconti_register

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Date:   Tue, 22 Nov 2022 23:23:53 +0800
From:   Xiu Jianfeng <xiujianfeng@...wei.com>
To:     <mturquette@...libre.com>, <sboyd@...nel.org>,
        <nobuhiro1.iwamatsu@...hiba.co.jp>
CC:     <linux-clk@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH] clk: visconti: Fix memory leak in visconti_register_pll()

@pll->rate_table has allocated memory by kmemdup(), if clk_hw_register()
fails, it should be freed, otherwise it will cause memory leak issue,
this patch fixes it.

Fixes: b4cbe606dc36 ("clk: visconti: Add support common clock driver and reset driver")
Signed-off-by: Xiu Jianfeng <xiujianfeng@...wei.com>
---
 drivers/clk/visconti/pll.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/visconti/pll.c b/drivers/clk/visconti/pll.c
index a484cb945d67..1f3234f22667 100644
--- a/drivers/clk/visconti/pll.c
+++ b/drivers/clk/visconti/pll.c
@@ -277,6 +277,7 @@ static struct clk_hw *visconti_register_pll(struct visconti_pll_provider *ctx,
 	ret = clk_hw_register(NULL, &pll->hw);
 	if (ret) {
 		pr_err("failed to register pll clock %s : %d\n", name, ret);
+		kfree(pll->rate_table);
 		kfree(pll);
 		pll_hw_clk = ERR_PTR(ret);
 	}
-- 
2.17.1