Patch "[PATCH 037/135] Drivers: hv: util: catch allocation errors" has been added to the 4.4-stable tree

Patch "[PATCH 037/135] Drivers: hv: util: catch allocation errors" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    [PATCH 037/135] Drivers: hv: util: catch allocation errors

to the 4.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     0037-Drivers-hv-util-catch-allocation-errors.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 9435330bd885600bb666af6bb111834a8e475ba5 Mon Sep 17 00:00:00 2001
From: Olaf Hering <olaf@aepfle.de>
Date: Mon, 14 Dec 2015 16:01:36 -0800
Subject: [PATCH 037/135] Drivers: hv: util: catch allocation errors

[ Upstream commit cdc0c0c94e4e6dfa371d497a3130f83349b6ead6 ]

Catch allocation errors in hvutil_transport_send.

Fixes: 14b50f80c32d ('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>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/hv/hv_utils_transport.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/drivers/hv/hv_utils_transport.c
+++ b/drivers/hv/hv_utils_transport.c
@@ -204,9 +204,12 @@ int hvutil_transport_send(struct hvutil_
 		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;


Patches currently in stable-queue which might be from olaf@aepfle.de are

queue-4.4/0036-tools-hv-report-ENOSPC-errors-in-hv_fcopy_daemon.patch
queue-4.4/0035-Drivers-hv-utils-run-polling-callback-always-in-inte.patch
queue-4.4/0037-Drivers-hv-util-catch-allocation-errors.patch
queue-4.4/0039-Drivers-hv-vss-run-only-on-supported-host-versions.patch