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| author | Lv Ruyi <lv.ruyi@zte.com.cn> | 2021-10-28 12:41:38 +0200 |
|---|---|---|
| committer | Wei Liu <wei.liu@kernel.org> | 2021-10-28 13:40:32 +0200 |
| commit | 01ccca3cb50dcff7eea01448af985a49859b8a1d (patch) | |
| tree | da3018a594e3fd0e4ac37c5f07ae2b4ab2f8f2d8 /drivers/hv/ring_buffer.c | |
| parent | x86/hyperv: Remove duplicate include (diff) | |
| download | linux-01ccca3cb50dcff7eea01448af985a49859b8a1d.tar.xz linux-01ccca3cb50dcff7eea01448af985a49859b8a1d.zip | |
Drivers: hv : vmbus: Adding NULL pointer check
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>
Link: https://lore.kernel.org/r/20211028104138.14576-1-lv.ruyi@zte.com.cn
Signed-off-by: Wei Liu <wei.liu@kernel.org>
Diffstat (limited to 'drivers/hv/ring_buffer.c')
| -rw-r--r-- | drivers/hv/ring_buffer.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/hv/ring_buffer.c b/drivers/hv/ring_buffer.c index 931802ae985c..71efacb90965 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++) |