linux-kernel - Re: [v2] nbd:fix memory leak in nbd_get

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Date:   Tue, 19 Nov 2019 09:23:49 -0700
From:   Jens Axboe <axboe@...nel.dk>
To:     Mike Christie <mchristi@...hat.com>, Sun Ke <sunke32@...wei.com>,
        josef@...icpanda.com, linux-block@...r.kernel.org,
        nbd@...er.debian.org, linux-kernel@...r.kernel.org
Cc:     stable@...r.kernel.org
Subject: Re: [v2] nbd:fix memory leak in nbd_get_socket()

On 11/19/19 9:22 AM, Mike Christie wrote:
> On 11/19/2019 12:09 AM, Sun Ke wrote:
>> Before return NULL,put the sock first.
>>
>> Cc: stable@...r.kernel.org
>> Fixes: cf1b2326b734 ("nbd: verify socket is supported during setup")
>> Signed-off-by: Sun Ke <sunke32@...wei.com>
>> ---
>> v2: add cc:stable tag
>> ---
>>   drivers/block/nbd.c | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/block/nbd.c b/drivers/block/nbd.c
>> index a94ee45..19e7599 100644
>> --- a/drivers/block/nbd.c
>> +++ b/drivers/block/nbd.c
>> @@ -993,6 +993,7 @@ static struct socket *nbd_get_socket(struct nbd_device *nbd, unsigned long fd,
>>   	if (sock->ops->shutdown == sock_no_shutdown) {
>>   		dev_err(disk_to_dev(nbd->disk), "Unsupported socket: shutdown callout must be supported.\n");
>>   		*err = -EINVAL;
>> +		sockfd_put(sock);
>>   		return NULL;
>>   	}
>>   
>>
> 
> Reviewed-by: Mike Christie <mchristi@...hat.com>

Thanks (both of you), applied for 5.4.

-- 
Jens Axboe