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| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2010-11-24 09:41:45 (GMT) |
|---|---|---|
| committer | Philipp Reisner <philipp.reisner@linbit.com> | 2011-03-10 10:35:14 (GMT) |
| commit | 3e3a7766c2e6995ac98e7855017abc3544d54e08 (patch) | |
| tree | 943c9d62c89764f1070a8a4067a3bd0d4e9de162 | |
| parent | 17a93f3007c13003c739a19d0814cb5c2d21daba (diff) | |
| download | linux-3e3a7766c2e6995ac98e7855017abc3544d54e08.tar.xz | |
drbd: use kzalloc and memset(,0,) to start with clean buffers in drbd_nl
Make sure we start with clean buffers to not accidentally send garbage
back to userspace. Note: has not been observed; but just in case.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
| -rw-r--r-- | drivers/block/drbd/drbd_nl.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index f969d87..80a389d 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -2211,7 +2211,7 @@ static void drbd_connector_callback(struct cn_msg *req, struct netlink_skb_parms reply_size += cm->reply_body_size; /* allocation not in the IO path, cqueue thread context */ - cn_reply = kmalloc(reply_size, GFP_KERNEL); + cn_reply = kzalloc(reply_size, GFP_KERNEL); if (!cn_reply) { retcode = ERR_NOMEM; goto fail; @@ -2382,7 +2382,7 @@ void drbd_bcast_ee(struct drbd_conf *mdev, /* receiver thread context, which is not in the writeout path (of this node), * but may be in the writeout path of the _other_ node. * GFP_NOIO to avoid potential "distributed deadlock". */ - cn_reply = kmalloc( + cn_reply = kzalloc( sizeof(struct cn_msg)+ sizeof(struct drbd_nl_cfg_reply)+ sizeof(struct dump_ee_tag_len_struct)+ @@ -2517,6 +2517,7 @@ void drbd_nl_send_reply(struct cn_msg *req, int ret_code) (struct drbd_nl_cfg_reply *)cn_reply->data; int rr; + memset(buffer, 0, sizeof(buffer)); cn_reply->id = req->id; cn_reply->seq = req->seq; |