[PATCH 05/10] Drivers: hv: util: catch allocation errors

From	"K. Y. Srinivasan" <kys@microsoft.com>
Newsgroups	linux.kernel
Subject	[PATCH 05/10] Drivers: hv: util: catch allocation errors
Date	2015-10-08 02:40 +0200
Message-ID	<qh7pv-4eQ-19@gated-at.bofh.it> (permalink)
References	<qh7pv-4eQ-7@gated-at.bofh.it> <qh7pv-4eQ-9@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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From: Olaf Hering <olaf@aepfle.de>

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>
---
 drivers/hv/hv_utils_transport.c |    9 ++++++---
 1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/drivers/hv/hv_utils_transport.c b/drivers/hv/hv_utils_transport.c
index 6a9d80a..1505ee6 100644
--- a/drivers/hv/hv_utils_transport.c
+++ b/drivers/hv/hv_utils_transport.c
@@ -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;
-- 
1.7.4.1

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[PATCH 05/10] Drivers: hv: util: catch allocation errors "K. Y. Srinivasan" <kys@microsoft.com> - 2015-10-08 02:40 +0200

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