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nbd:fix memory leak in nbd_get_socket()

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commit dff10bbea4 upstream.

Before returning NULL, put the sock first.

Cc: stable@vger.kernel.org
Fixes: cf1b2326b7 ("nbd: verify socket is supported during setup")
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Sun Ke <sunke32@huawei.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sun Ke 2019-11-19 14:09:11 +08:00 committed by Greg Kroah-Hartman
parent 036588ec68
commit 65d153c8ed
1 changed files with 1 additions and 0 deletions
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1
drivers/block/nbd.c
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@ -945,6 +945,7 @@ 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;
}