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Drivers: hv: util: catch allocation errors 

Catch allocation errors in hvutil_transport_send.

Fixes: 14b50f80c3 ('Drivers: hv: util: introduce hv_utils_transport abstraction')

Signed-off-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Olaf Hering 2015-12-14 16:01:36 -08:00 committed by Greg Kroah-Hartman
parent 6dfb867cea
commit cdc0c0c94e
1 changed files with 6 additions and 3 deletions
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9
drivers/hv/hv_utils_transport.c
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@ -204,9 +204,12 @@ int hvutil_transport_send(struct hvutil_transport *hvt, void *msg, int len)
goto out_unlock;
}
hvt->outmsg = kzalloc(len, GFP_KERNEL);
memcpy(hvt->outmsg, msg, len);
hvt->outmsg_len = len;
wake_up_interruptible(&hvt->outmsg_q);
if (hvt->outmsg) {
memcpy(hvt->outmsg, msg, len);
hvt->outmsg_len = len;
wake_up_interruptible(&hvt->outmsg_q);
} else
ret = -ENOMEM;
out_unlock:
mutex_unlock(&hvt->outmsg_lock);
return ret;