Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756778Ab2J1X1r (ORCPT ); Sun, 28 Oct 2012 19:27:47 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:41986 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756618Ab2J1X1m (ORCPT ); Sun, 28 Oct 2012 19:27:42 -0400 Message-Id: <20121028231600.885634903@decadent.org.uk> User-Agent: quilt/0.60-1 Date: Sun, 28 Oct 2012 23:16:53 +0000 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, "K. Y. Srinivasan" , Haiyang Zhang , Jason Wang , Greg Kroah-Hartman Subject: [ 077/105] Drivers: hv: Cleanup error handling in vmbus_open() In-Reply-To: <20121028231536.970033833@decadent.org.uk> X-SA-Exim-Connect-IP: 2001:470:1f08:1539:21c:bfff:fe03:f805 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3180 Lines: 113 3.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: "K. Y. Srinivasan" commit 1392550240aaa72ce3a094a38bd23525cd67ce60 upstream. Fix a memory leak in the error handling path in the function vmbus_open(). Signed-off-by: K. Y. Srinivasan Reviewed-by: Haiyang Zhang Reported-by: Jason Wang Acked-by: Jason Wang Signed-off-by: Greg Kroah-Hartman Signed-off-by: Ben Hutchings --- drivers/hv/channel.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) diff --git a/drivers/hv/channel.c b/drivers/hv/channel.c index 4065374..f4c3d28 100644 --- a/drivers/hv/channel.c +++ b/drivers/hv/channel.c @@ -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); -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/