linux-kernel - Re: [PATCH] char: hw_random: Fix a reference count leak.

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Message-ID: <20200615065846.GA5791@kozik-lap>
Date:   Mon, 15 Jun 2020 08:58:46 +0200
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     wu000273@....edu
Cc:     kjlu@....edu,
        Łukasz Stelmach <l.stelmach@...sung.com>,
        Matt Mackall <mpm@...enic.com>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        Arnd Bergmann <arnd@...db.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Kukjin Kim <kgene@...nel.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        linux-samsung-soc@...r.kernel.org, linux-crypto@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] char: hw_random: Fix a reference count leak.

On Sat, Jun 13, 2020 at 04:41:28PM -0500, wu000273@....edu wrote:
> From: Qiushi Wu <wu000273@....edu>
> 
> Calling pm_runtime_get_sync increments the counter even in case of
> failure, causing incorrect ref count if pm_runtime_put_sync is not
> called in error handling paths. Thus replace the jump target
> "err_pm_get" by "err_clock".
> 
> Fixes: 6cd225cc5d8a ("hwrng: exynos - add Samsung Exynos True RNG driver")
> Signed-off-by: Qiushi Wu <wu000273@....edu>

1. Cc: <stable@...r.kernel.org>
2. Subject prefix:
	hwrng: exynos - 
3. Subject title: Fix PM runtime reference count leak
   (no need for end stop)

With these changes:
Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>

Best regards,
Krzysztof