From: cgel.zte@gmail.com
To: kys@microsoft.com
Cc: haiyangz@microsoft.com, sthemmin@microsoft.com,
wei.liu@kernel.org, decui@microsoft.com,
linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org,
Lv Ruyi <lv.ruyi@zte.com.cn>, Zeal Robot <zealci@zte.com.cn>
Subject: [PATCH] Drivers: hv : vmbus: Adding NULL pointer check
Date: Thu, 28 Oct 2021 10:41:38 +0000 [thread overview]
Message-ID: <20211028104138.14576-1-lv.ruyi@zte.com.cn> (raw)
From: Lv Ruyi <lv.ruyi@zte.com.cn>
This patch fixes the following Coccinelle warning:
drivers/hv/ring_buffer.c:223: alloc with no test
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Lv Ruyi <lv.ruyi@zte.com.cn>
---
drivers/hv/ring_buffer.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c
index 931802ae985c..4ef5c3771079 100644
--- a/drivers/hv/ring_buffer.c
+++ b/drivers/hv/ring_buffer.c
@@ -223,6 +223,8 @@ int hv_ringbuffer_init(struct hv_ring_buffer_info *ring_info,
pages_wraparound = kcalloc(page_cnt * 2 - 1,
sizeof(struct page *),
GFP_KERNEL);
+ if (!pages_wraparound)
+ return -ENOMEM;
pages_wraparound[0] = pages;
for (i = 0; i < 2 * (page_cnt - 1); i++)
--
2.25.1
next reply other threads:[~2021-10-28 10:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-28 10:41 cgel.zte [this message]
2021-10-28 11:42 ` [PATCH] Drivers: hv : vmbus: Adding NULL pointer check Wei Liu
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