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Drivers: hv: Cleanup error handling in vmbus_open() 

Fix a memory leak  in the error handling path in the function vmbus_open().

Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Reported-by: Jason Wang <jasowang@redhat.com>
Cc: Stable <stable@vger.kernel.org>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
K. Y. Srinivasan 2012-10-12 13:22:42 -07:00 committed by Greg Kroah-Hartman
parent 1b2077345c
commit 1392550240
1 changed files with 13 additions and 11 deletions
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24
drivers/hv/channel.c
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@ -146,14 +146,14 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size,
if (ret != 0) {
err = ret;
goto errorout;
goto error0;
}
ret = hv_ringbuffer_init(
&newchannel->inbound, in, recv_ringbuffer_size);
if (ret != 0) {
err = ret;
goto errorout;
goto error0;
}
@ -168,7 +168,7 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size,
if (ret != 0) {
err = ret;
goto errorout;
goto error0;
}
/* Create and init the channel open message */
@ -177,7 +177,7 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size,
GFP_KERNEL);
if (!open_info) {
err = -ENOMEM;
goto errorout;
goto error0;
}
init_completion(&open_info->waitevent);
@ -193,7 +193,7 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size,
if (userdatalen > MAX_USER_DEFINED_BYTES) {
err = -EINVAL;
goto errorout;
goto error0;
}
if (userdatalen)
@ -208,19 +208,18 @@ int vmbus_open(struct vmbus_channel *newchannel, u32 send_ringbuffer_size,
sizeof(struct vmbus_channel_open_channel));
if (ret != 0)
goto cleanup;
goto error1;
t = wait_for_completion_timeout(&open_info->waitevent, 5*HZ);
if (t == 0) {
err = -ETIMEDOUT;
goto errorout;
goto error1;
}
if (open_info->response.open_result.status)
err = open_info->response.open_result.status;
cleanup:
spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags);
list_del(&open_info->msglistentry);
spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock, flags);
@ -228,9 +227,12 @@ cleanup:
kfree(open_info);
return err;
errorout:
hv_ringbuffer_cleanup(&newchannel->outbound);
hv_ringbuffer_cleanup(&newchannel->inbound);
error1:
spin_lock_irqsave(&vmbus_connection.channelmsg_lock, flags);
list_del(&open_info->msglistentry);
spin_unlock_irqrestore(&vmbus_connection.channelmsg_lock, flags);
error0:
free_pages((unsigned long)out,
get_order(send_ringbuffer_size + recv_ringbuffer_size));
kfree(open_info);