From: Olaf Hering <olaf@aepfle.de>
To: kys@microsoft.com, haiyangz@microsoft.com, gregkh@linuxfoundation.org
Cc: linux-kernel@vger.kernel.org, devel@linuxdriverproject.org,
Olaf Hering <olaf@aepfle.de>
Subject: [PATCH 4/5] Drivers: hv: util: catch allocation errors
Date: Mon, 5 Oct 2015 15:27:18 +0000 [thread overview]
Message-ID: <1444058839-19008-5-git-send-email-olaf@aepfle.de> (raw)
In-Reply-To: <1444058839-19008-1-git-send-email-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>
---
drivers/hv/hv_utils_transport.c | 9 ++++++---
1 file 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;
next prev parent reply other threads:[~2015-10-05 15:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-05 15:27 [PATCH 0/5] various hyperv fixes Olaf Hering
2015-10-05 15:27 ` [PATCH 1/5] Drivers: hv: utils: run polling callback always in interrupt context Olaf Hering
2015-10-05 15:27 ` [PATCH 2/5] tools: hv: report ENOSPC errors in hv_fcopy_daemon Olaf Hering
2015-10-05 15:27 ` [PATCH 3/5] tools: hv: remove repeated HV_FCOPY string Olaf Hering
2015-10-05 15:27 ` Olaf Hering [this message]
2015-10-05 15:27 ` [PATCH 5/5] Drivers: hv: utils: use memdup_user in hvt_op_write Olaf Hering
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