linux-kernel - Re: [PATCH v2] cpufreq:fix memory leak in sun50i_cpufreq_nvmem

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Date:   Mon, 25 Apr 2022 10:36:04 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Samuel Holland <samuel@...lland.org>
Cc:     Xiaobing Luo <luoxiaobing0926@...il.com>, tiny.windzz@...il.com,
        rafael@...nel.org, wens@...e.org, jernej.skrabec@...il.com,
        mripard@...nel.org, linux-pm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-sunxi@...ts.linux.dev,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] cpufreq:fix memory leak in sun50i_cpufreq_nvmem_probe

On 23-04-22, 21:46, Samuel Holland wrote:
> On 4/23/22 10:12 AM, Xiaobing Luo wrote:
> > --------------------------------------------
> > unreferenced object 0xffff000010742a00 (size 128):
> >   comm "swapper/0", pid 1, jiffies 4294902015 (age 1187.652s)
> >   hex dump (first 32 bytes):
> >     00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
> >     00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
> >   backtrace:
> >     [<00000000b4dfebaa>] __kmalloc+0x338/0x474
> >     [<00000000d6e716db>] sun50i_cpufreq_nvmem_probe+0xc4/0x36c
> >     [<000000007d6082a0>] platform_probe+0x98/0x11c
> >     [<00000000c990f549>] really_probe+0x234/0x5a0
> >     [<000000002d9fecc6>] __driver_probe_device+0x194/0x224
> >     [<00000000cf0b94fa>] driver_probe_device+0x64/0x13c
> >     [<00000000f238e4cf>] __device_attach_driver+0xf8/0x180
> >     [<000000006720e418>] bus_for_each_drv+0xf8/0x160
> >     [<00000000df4f14f6>] __device_attach+0x174/0x29c
> >     [<00000000782002fb>] device_initial_probe+0x20/0x30
> >     [<00000000c2681b06>] bus_probe_device+0xfc/0x110
> >     [<00000000964cf3bd>] device_add+0x5f0/0xcd0
> >     [<000000004b9264e3>] platform_device_add+0x198/0x390
> >     [<00000000fa82a9d0>] platform_device_register_full+0x178/0x210
> >     [<000000009a5daf13>] sun50i_cpufreq_init+0xf8/0x168
> >     [<000000000377cc7c>] do_one_initcall+0xe4/0x570
> > --------------------------------------------
> > 
> > if sun50i_cpufreq_get_efuse failed, then opp_tables leak.
> > Fixes: f328584f7bff ("cpufreq: Add sun50i nvmem based CPU scaling driver")
> > 
> > Signed-off-by: Xiaobing Luo <luoxiaobing0926@...il.com>
> 
> Two minor style issues: there should be a space after "cpufreq:" in the commit
> subject. And the blank line should come before the "Fixes:" tag, not after.
> Otherwise:
> 
> Reviewed-by: Samuel Holland <samuel@...lland.org>

Applied, thanks.

-- 
viresh