linux-kernel - Re: [PATCH 1/6] UBI: Fastmap: Fix memory leaks while closing the WL sub-system

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Message-ID: <548423E3.8010106@nod.at>
Date:	Sun, 07 Dec 2014 10:54:43 +0100
From:	Richard Weinberger <richard@....at>
To:	Tanya Brokhman <tlinder@...eaurora.org>, dedekind1@...il.com
CC:	linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/6] UBI: Fastmap: Fix memory leaks while closing the
 WL sub-system

Am 07.12.2014 um 09:13 schrieb Tanya Brokhman:
> On 11/30/2014 1:35 PM, Richard Weinberger wrote:
>> Add a ubi_fastmap_close() to free all resources used by fastmap
>> at WL shutdown.
>>
>> Signed-off-by: Richard Weinberger <richard@....at>
>> ---
>>   drivers/mtd/ubi/wl.c | 21 ++++++++++++++++++---
>>   1 file changed, 18 insertions(+), 3 deletions(-)
>>
>> diff --git a/drivers/mtd/ubi/wl.c b/drivers/mtd/ubi/wl.c
>> index c2822f7..47b215f 100644
>> --- a/drivers/mtd/ubi/wl.c
>> +++ b/drivers/mtd/ubi/wl.c
>> @@ -2064,6 +2064,23 @@ static void protection_queue_destroy(struct ubi_device *ubi)
>>       }
>>   }
>>
>> +static void ubi_fastmap_close(struct ubi_device *ubi)
>> +{
>> +#ifdef CONFIG_MTD_UBI_FASTMAP
>> +    int i;
>> +
>> +    flush_work(&ubi->fm_work);
>> +    return_unused_pool_pebs(ubi, &ubi->fm_pool);
>> +    return_unused_pool_pebs(ubi, &ubi->fm_wl_pool);
>> +
>> +    if (ubi->fm) {
>> +        for (i = 0; i < ubi->fm->used_blocks; i++)
>> +            kfree(ubi->fm->e[i]);
>> +    }
>> +    kfree(ubi->fm);
> 
> kfree(ubi->fm_buf)?

No this is not a typo, I kfree() here ubi->fm by design.
What am I missing? :)

Thanks,
//richard
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