linux-kernel - [PATCH] Drivers: hv: vmbus: Release cpu lock in error case

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Message-Id: <1654794996-13244-1-git-send-email-ssengar@linux.microsoft.com>
Date:   Thu,  9 Jun 2022 10:16:36 -0700
From:   Saurabh Sengar <ssengar@...ux.microsoft.com>
To:     kys@...rosoft.com, haiyangz@...rosoft.com, sthemmin@...rosoft.com,
        wei.liu@...nel.org, decui@...rosoft.com,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org,
        ssengar@...rosoft.com, mikelley@...rosoft.com
Subject: [PATCH] Drivers: hv: vmbus: Release cpu lock in error case

In case of invalid sub channel, release cpu lock before returning.

Signed-off-by: Saurabh Sengar <ssengar@...ux.microsoft.com>
---
 drivers/hv/channel_mgmt.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hv/channel_mgmt.c b/drivers/hv/channel_mgmt.c
index 280b529..5b12040 100644
--- a/drivers/hv/channel_mgmt.c
+++ b/drivers/hv/channel_mgmt.c
@@ -639,6 +639,7 @@ static void vmbus_process_offer(struct vmbus_channel *newchannel)
 		 */
 		if (newchannel->offermsg.offer.sub_channel_index == 0) {
 			mutex_unlock(&vmbus_connection.channel_mutex);
+			cpus_read_unlock();
 			/*
 			 * Don't call free_channel(), because newchannel->kobj
 			 * is not initialized yet.
-- 
1.8.3.1