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nbd: put socket in error cases

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When adding a new socket we look it up and then try to add it to our
configuration.  If any of those steps fail we need to make sure we put
the socket so we don't leak them.

Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Josef Bacik 2017-04-06 17:01:56 -04:00 committed by Jens Axboe
parent 1c6286f263
commit 9b1355d5e3
1 changed files with 7 additions and 2 deletions
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9
drivers/block/nbd.c
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@ -628,16 +628,21 @@ static int nbd_add_socket(struct nbd_device *nbd, struct block_device *bdev,
if (nbd->task_setup != current) {
dev_err(disk_to_dev(nbd->disk),
"Device being setup by another task");
sockfd_put(sock);
return -EINVAL;
}
socks = krealloc(nbd->socks, (nbd->num_connections + 1) *
sizeof(struct nbd_sock *), GFP_KERNEL);
if (!socks)
if (!socks) {
sockfd_put(sock);
return -ENOMEM;
}
nsock = kzalloc(sizeof(struct nbd_sock), GFP_KERNEL);
if (!nsock)
if (!nsock) {
sockfd_put(sock);
return -ENOMEM;
}
nbd->socks = socks;