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Message-ID: <20220621151548.GE12206@alpha.franken.de>
Date: Tue, 21 Jun 2022 17:15:48 +0200
From: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
To: Liang He <windhl@....com>
Cc: john@...ozen.org, xkernel.wang@...mail.com,
linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mips: lantiq: xway: Fix refcount leak bug in sysctrl
On Fri, Jun 17, 2022 at 08:25:05PM +0800, Liang He wrote:
> In ltq_soc_init(), of_find_compatible_node() will return a node
> pointer with refcount incremented. We should use of_node_put() when
> it is not used anymore.
>
> Signed-off-by: Liang He <windhl@....com>
> ---
> arch/mips/lantiq/xway/sysctrl.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/mips/lantiq/xway/sysctrl.c b/arch/mips/lantiq/xway/sysctrl.c
> index 084f6caba5f2..d444a1b98a72 100644
> --- a/arch/mips/lantiq/xway/sysctrl.c
> +++ b/arch/mips/lantiq/xway/sysctrl.c
> @@ -441,6 +441,10 @@ void __init ltq_soc_init(void)
> of_address_to_resource(np_ebu, 0, &res_ebu))
> panic("Failed to get core resources");
>
> + of_node_put(np_pmu);
> + of_node_put(np_cgu);
> + of_node_put(np_ebu);
> +
> if (!request_mem_region(res_pmu.start, resource_size(&res_pmu),
> res_pmu.name) ||
> !request_mem_region(res_cgu.start, resource_size(&res_cgu),
> --
> 2.25.1
applied to mips-fixes.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
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